/* Cogyn - Adaptive Learning Platform */

/* CSS Reset und Basis-Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

:root {
    /* Wissenschaftliches Farbschema - Hell mit blauen Akzenten */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #475569;
    --accent-color: #0ea5e9;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #556376;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --header-height: 72px;
    
    /* Sidebar - Deep Blue Theme */
    --sidebar-bg: #1E3A8A;
    --sidebar-text: #FFFFFF;
    --sidebar-hover: rgba(255, 255, 255, 0.1);
    --sidebar-active: rgba(255, 255, 255, 0.2);
    --sidebar-width: 280px;
    
    /* Main Area */
    --main-bg: #FFFFFF;
    --card-bg: #F8FAFC;
    
    /* Error Colors (for tracking) */
    --error-logic: #DC2626;
    --error-calc: #8B5CF6;
    --error-followup: #F59E0B;
    --error-formal: #3B82F6;
    --error-none: #6EE7B7;
    
    /* Button Colors */
    --btn-primary: #6366F1;
    --btn-success: #10B981;
    --btn-secondary: #6B7280;
    --btn-hint: #F59E0B;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

@font-face {
    font-family: 'Inter';
    font-display: swap;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-color);
    min-height: 100vh;
}

/* ==================== APP LAYOUT ==================== */
.app-layout {
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    grid-row: 1 / -1;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header .logo {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--sidebar-text);
}

/* Logo Image Styles */
.sidebar-header .logo-img {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    object-fit: contain;
    background: rgba(255, 255, 255, 0.1);
    padding: 4px;
}

.sidebar-header h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--sidebar-text);
    letter-spacing: -0.5px;
}

.sidebar-nav {
    padding: var(--spacing-4) 0;
    flex: 0 0 auto;
}

.sidebar-nav .nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-6);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.sidebar-nav .nav-item:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text);
}

.sidebar-nav .nav-item.active {
    background: rgba(255, 255, 255, 0.25);
    color: var(--sidebar-text);
    border-left-color: var(--sidebar-text);
    font-weight: 600;
}

.sidebar-nav .nav-item i {
    font-size: var(--font-size-base);
    width: 20px;
    text-align: center;
}

/* Sidebar Stats Section */
.sidebar-stats {
    padding: var(--spacing-4) var(--spacing-6);
    flex: 1;
    overflow-y: auto;
}

.sidebar-stats h4 {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-3);
}

/* Sidebar Stats Collapsible */
.sidebar-stats-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-6);
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    transition: color 0.2s ease;
}

.sidebar-stats-toggle:hover {
    color: rgba(255, 255, 255, 0.9);
}

.sidebar-stats-toggle i {
    transition: transform 0.3s ease;
    font-size: var(--font-size-xs);
}

.sidebar-stats-toggle.collapsed i {
    transform: rotate(-90deg);
}

.sidebar-stats .stats-content {
    transition: max-height 0.3s ease, opacity 0.3s ease;
    max-height: 500px;
    opacity: 1;
    overflow: hidden;
}

.sidebar-stats .stats-content.collapsed {
    max-height: 0;
    opacity: 0;
}

/* Current Task Widget */
.current-task {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.current-task .task-label {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-2);
}

.current-task .task-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--sidebar-text);
    transition: color 0.2s ease;
}

.current-task.has-task {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.current-task.has-task .task-title {
    color: #6EE7B7;
}

/* Progress Widget */
.progress-widget {
    margin-bottom: var(--spacing-4);
}

.progress-widget .progress-label {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-2);
}

.progress-widget .progress-count {
    font-weight: 600;
    color: var(--sidebar-text);
}

.progress-widget .progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.progress-widget .progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #10B981, #6EE7B7);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-widget .progress-fill.completed {
    background: linear-gradient(90deg, #FFD700, #FFA500);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 5px rgba(255, 215, 0, 0.3); }
    50% { box-shadow: 0 0 15px rgba(255, 215, 0, 0.6); }
}

/* Error Stats Widget */
.error-stats {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.error-stats .stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2);
}

.error-stats .stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
}

.error-stats .stat-count {
    font-size: var(--font-size-lg);
    font-weight: 700;
    min-width: 24px;
}

.error-stats .stat-label {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.7);
}

.error-stats .stat-item.stat-logic .stat-count { color: var(--error-logic); }
.error-stats .stat-item.stat-calc .stat-count { color: var(--error-calc); }
.error-stats .stat-item.stat-followup .stat-count { color: var(--error-followup); }
.error-stats .stat-item.stat-formal .stat-count { color: var(--error-formal); }

.error-stats .stat-count.has-errors {
    animation: error-bump 0.3s ease-out;
}

@keyframes error-bump {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

/* Recommendations Widget */
.recommendations {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
}

.recommendations .recommendation-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    padding: var(--spacing-2) 0;
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.recommendations .recommendation-item:last-child {
    border-bottom: none;
}

.recommendations .recommendation-item i {
    color: var(--btn-hint);
    margin-top: 2px;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--spacing-4) 0 var(--spacing-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: auto;
}

.sidebar-footer .nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-6);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all 0.2s ease;
}

.sidebar-footer .nav-item:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text);
}

.sidebar-footer .nav-item i {
    font-size: var(--font-size-base);
    width: 20px;
    text-align: center;
}

/* Sidebar Animation */
.sidebar {
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sidebar Hover Effects */
.sidebar-nav .nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: linear-gradient(90deg, rgba(255,255,255,0.15), transparent);
    transition: width 0.3s ease;
}

.sidebar-nav .nav-item:hover::before {
    width: 100%;
}

.sidebar-nav .nav-item {
    position: relative;
    overflow: hidden;
}

/* Stat Items Hover */
.error-stats .stat-item {
    transition: transform 0.2s ease, background 0.2s ease;
}

.error-stats .stat-item:hover {
    transform: translateX(4px);
    background: rgba(255, 255, 255, 0.1);
}

/* Recommendation Items Hover */
.recommendations .recommendation-item {
    transition: background 0.2s ease;
    padding: var(--spacing-3);
    border-radius: var(--radius-sm);
    margin: 0 calc(-1 * var(--spacing-3));
}

.recommendations .recommendation-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Progress Bar Animation */
.progress-widget .progress-fill {
    transition: width 0.5s ease-out;
}

/* Mobile Header (hidden on desktop) */
.mobile-header {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    z-index: 110;
}

.mobile-header .menu-toggle,
.mobile-header .profile-toggle {
    background: transparent;
    border: none;
    color: var(--sidebar-text);
    font-size: var(--font-size-xl);
    padding: var(--spacing-2);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background 0.2s ease;
}

.mobile-header .menu-toggle:hover,
.mobile-header .profile-toggle:hover {
    background: var(--sidebar-hover);
}

.mobile-header .logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.mobile-header .logo-mobile {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.mobile-header .logo-img-mobile {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    object-fit: contain;
}

/* Mobile Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 95;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Main Content Area */
.main-content {
    background: var(--main-bg);
    padding: var(--spacing-6) var(--spacing-8);
    overflow-y: auto;
    min-height: 100vh;
    margin-left: var(--sidebar-width);
    box-sizing: border-box;
}

/* Hide content-tabs - navigation is in sidebar */
.main-content .content-tabs,
.content-tabs {
    display: none !important;
}

/* Content area takes full width - no centering */
.main-content .content-area {
    width: 100%;
    max-width: none;
    box-sizing: border-box;
    margin: 0;
}

/* Bottom Bar - DEAKTIVIERT (Buttons sind in den Tabs) */
.bottom-bar {
    display: none !important;
}

.bottom-bar.visible {
    display: none !important;
}

/* Task Card Design */
.task-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow);
    text-align: center;
    margin-bottom: var(--spacing-6);
}

.task-card h2 {
    color: var(--sidebar-bg);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-xl);
}

.task-card .latex-display {
    font-size: 1.5em;
    margin: var(--spacing-6) 0;
    padding: var(--spacing-4);
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

.task-card .btn-start {
    background: var(--btn-primary);
    color: white;
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-lg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.task-card .btn-start:hover {
    background: var(--btn-primary);
    filter: brightness(0.9);
    transform: translateY(-1px);
}

/* Solution Steps with Error Markings */
.solution-step {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-3);
    border-left: 4px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}

.solution-step:hover {
    filter: brightness(0.96);
    box-shadow: var(--shadow);
    transform: translateX(2px);
}

.solution-step.error-logic {
    border-left-color: var(--error-logic);
    background: rgba(220, 38, 38, 0.05);
}

.solution-step.error-calc {
    border-left-color: var(--error-calc);
    background: rgba(16, 185, 129, 0.05);
}

.solution-step.error-followup {
    border-left-color: var(--error-followup);
    background: rgba(245, 158, 11, 0.05);
}

.solution-step.error-formal {
    border-left-color: var(--error-formal);
    background: rgba(59, 130, 246, 0.05);
}

.solution-step.error-none {
    border-left-color: var(--error-none);
}

/* Tab Content Display */
.content-area .tab-content {
    display: none;
}

.content-area .tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hide old header in new layout */
.app-layout .header {
    display: none;
}

/* Hide old footer in new layout */
.app-layout ~ .footer {
    display: none;
}

/* Override all container constraints in app-layout */
.app-layout .container,
.app-layout .main .container {
    max-width: none;
    width: 100%;
    padding: 0;
    margin: 0;
}

/* Tab content sections take full width */
.content-area .tab-content {
    width: 100%;
    max-width: 100%;
}

.content-area section {
    width: 100%;
    max-width: 100%;
}

/* Full width for all form containers in new layout */
.main-content .task-generation-form,
.main-content .profile-form,
.main-content .abi-sections,
.main-content .text-input-area,
.main-content .image-upload-area {
    width: 100%;
    max-width: 100%;
}

/* Ensure input-header takes full width */
.main-content .input-header {
    width: 100%;
    max-width: 100%;
    text-align: left;
}

/* Override legacy tab-content padding in new layout */
.app-layout .tab-content,
.main-content .tab-content {
    padding: 0;
    background: transparent;
    width: 100%;
    max-width: 100%;
}

.app-layout .tab-content.active,
.main-content .tab-content.active {
    display: block;
}

/* Welcome Section in Dashboard */
.content-area .welcome-section {
    margin-top: 0;
    margin-bottom: var(--spacing-6);
}

/* Adjust for bottom bar space */
.main-content {
    padding-bottom: calc(70px + var(--spacing-6));
}


/* Sidebar toggle hidden by default in top-nav layout */
.sidebar-toggle {
    display: none;
}

/* Main Content */
.main {
    padding: var(--spacing-8) var(--spacing-5) var(--spacing-12);
    min-height: calc(100vh - var(--header-height));
    margin-left: 0;
}

.main .container {
    max-width: 1100px;
}

/* Welcome Section */
.welcome-section {
    margin-bottom: var(--spacing-8);
    margin-top: var(--spacing-6);
}

.welcome-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-5);
    align-items: stretch;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: var(--spacing-6);
    align-items: stretch;
}

.hero-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.hero-card::after {
    display: none;
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-5);
    align-items: center;
}

.hero-logo {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(14, 165, 233, 0.1));
    border: 1px solid rgba(37, 99, 235, 0.2);
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.75rem;
}

.hero-logo-img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    object-fit: contain;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(14, 165, 233, 0.05));
    padding: 8px;
    border: 1px solid rgba(37, 99, 235, 0.15);
}

.welcome-content h2 {
    font-size: clamp(1.75rem, 2.5vw, 2.25rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
    letter-spacing: -0.5px;
}

.welcome-content p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0;
    line-height: 1.7;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: var(--font-size-xs);
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-1);
}

/* Compact hero for returning users */
.hero-card.compact-hero {
    padding: var(--spacing-5) var(--spacing-6);
}

.compact-hero .hero-content {
    gap: var(--spacing-4);
}

.compact-hero .hero-logo-img {
    width: 56px;
    height: 56px;
}

.compact-hero h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-1);
}

.compact-hero p {
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
    margin-top: var(--spacing-5);
}

.btn-ghost {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    box-shadow: none;
}

.btn-ghost:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.hero-highlights {
    display: grid;
    gap: var(--spacing-4);
}

.pill-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4) var(--spacing-5);
    display: flex;
    gap: var(--spacing-4);
    align-items: flex-start;
    box-shadow: var(--shadow);
    transition: all 0.2s ease;
}

.pill-card:hover {
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: var(--shadow-lg);
}

.pill-card i {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    background: rgba(37, 99, 235, 0.1);
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.pill-card strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
    font-weight: 600;
}

.pill-card span {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

/* Dashboard Action Buttons */
.dashboard-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-6);
    margin-top: var(--spacing-8);
    margin-bottom: var(--spacing-6);
    width: 100%;
    padding: var(--spacing-4) 0;
    grid-column: 1 / -1;
}

.action-card {
    background: linear-gradient(145deg, var(--surface-color), var(--bg-secondary));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8) var(--spacing-6);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    min-width: 220px;
    max-width: 280px;
    flex: 1;
}

.action-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.action-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary-color);
    box-shadow: 0 12px 40px rgba(37, 99, 235, 0.2);
}

.action-card:hover::before {
    opacity: 1;
}

.action-icon {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(37, 99, 235, 0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-5);
    transition: all 0.3s ease;
}

.action-card:hover .action-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transform: scale(1.1);
}

.action-icon i {
    font-size: 36px;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

.action-card:hover .action-icon i {
    color: white;
}

.action-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-3) 0;
}

.action-card p {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* Responsive Dashboard Actions */
@media (max-width: 900px) {
    .dashboard-actions {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-4);
    }
    
    .action-card {
        flex-direction: row;
        text-align: left;
        padding: var(--spacing-5) var(--spacing-6);
        gap: var(--spacing-5);
        min-width: 280px;
        max-width: 400px;
        width: 100%;
    }
    
    .action-icon {
        width: 64px;
        height: 64px;
        min-width: 64px;
        margin-bottom: 0;
    }
    
    .action-icon i {
        font-size: 26px;
    }
}

/* Input Section */
.input-section {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: var(--spacing-8);
    border: 1px solid var(--border-color);
}

/* Tabs */
.input-tabs {
    display: flex;
    background: var(--background-color);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-2);
    gap: var(--spacing-1);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
}

.tab-btn:hover {
    background: var(--surface-color);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--surface-color);
    color: var(--primary-color);
    font-weight: 600;
    box-shadow: var(--shadow);
}

.tab-content {
    display: none;
    padding: 0;
    background: transparent;
    width: 100%;
}

.tab-content.active {
    display: block;
}

/* Input Container - Full width in new layout */
.input-container {
    max-width: 100%;
    width: 100%;
    margin: 0;
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow);
}

.input-header {
    text-align: left;
    margin-bottom: var(--spacing-6);
}

.input-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.input-header p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

/* Text Input */
.text-input-area {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

/* MathLive math-field inputs */
.math-field-input,
#math-input,
#correction-task-input,
#correction-solution-input {
    width: 100%;
    padding: var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-lg);
    font-family: var(--font-family);
    min-height: 80px;
    transition: all 0.2s ease;
    background: var(--surface-color);
    color: var(--text-primary);
    display: block;
    --caret-color: var(--primary-color);
}

.math-field-input:focus-within,
#math-input:focus-within,
#correction-task-input:focus-within,
#correction-solution-input:focus-within {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Multi-line math-field: extra lines look seamless with the original field */
/* Original field that has extra lines: flatten bottom */
math-field[data-has-lines] {
    border-bottom-left-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
    border-bottom: 1px solid rgba(0,0,0,0.06) !important;
}
/* Extra line fields: no individual box styling */
math-field.ml-line[data-line-field] {
    border: 1px solid var(--border-color) !important;
    border-top: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    min-height: 36px;
    padding: var(--spacing-2) var(--spacing-4);
}
math-field.ml-line[data-line-field]:last-of-type {
    border-bottom-left-radius: var(--radius-lg) !important;
    border-bottom-right-radius: var(--radius-lg) !important;
}
math-field.ml-line[data-line-field]:focus-within {
    border-color: var(--primary-color) !important;
    box-shadow: none !important;
}

/* Suppress MathLive's built-in virtual keyboard and override fonts/colors */
math-field {
    --keyboard-zindex: -1;
    --text-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --smart-fence-color: transparent;
    --text-highlight: transparent;
    --contains-highlight-background-color: transparent;
    --smart-fence-opacity: 0;
    --selection-background-color: rgba(37, 99, 235, 0.15);
    --primary: var(--text-primary);
    --highlight-inactive: transparent;
    --highlight: transparent;
    --text-highlight-background-color: transparent;
    --latex-color: var(--text-primary);
    color: var(--text-primary);
    font-family: var(--font-family);
    letter-spacing: normal;
}

/* Remove blue highlight from text-mode atoms inside math-field */
math-field .ML__text,
math-field .ML__textit,
math-field .ML__textbf {
    color: var(--text-primary) !important;
    background: transparent !important;
}

math-field::part(virtual-keyboard-toggle) {
    display: none;
}

math-field::part(content) {
    color: var(--text-primary);
    background: transparent;
}

math-field::part(container) {
    background: transparent;
}

/* Remove any blue/colored backgrounds on text atoms */
math-field .ML__smart-fence,
math-field .ML__text-highlight {
    background: transparent !important;
    color: inherit !important;
}

/* Ensure sqrt rendering uses correct colors */
math-field .ML__sqrt-line {
    border-top-color: var(--text-primary) !important;
}

math-field .ML__sqrt-sign {
    color: var(--text-primary) !important;
}

.input-actions {
    display: flex;
    gap: var(--spacing-3);
    justify-content: center;
}

/* Buttons */
.btn {
    padding: var(--spacing-3) var(--spacing-5);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    text-decoration: none;
    box-shadow: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--surface-color);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--background-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.btn-accent {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.btn-accent:hover {
    background: #0284c7;
    border-color: #0284c7;
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--error-color);
    color: white;
    border-color: var(--error-color);
}

.btn-danger:hover {
    background: #dc2626;
    border-color: #dc2626;
    transform: translateY(-1px);
}

/* Image Upload */
.image-upload-area {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-8);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--background-color);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.03);
}

.upload-zone i {
    font-size: var(--font-size-3xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-3);
}

.upload-zone p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

.upload-hint {
    font-weight: 500;
    color: var(--text-primary) !important;
}

.image-preview {
    text-align: center;
    position: relative;
    display: inline-block;
}

.image-preview img {
    max-width: 100%;
    max-height: 400px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.image-preview .btn {
    margin-top: var(--spacing-3);
}

.preview-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    justify-content: center;
}

.preview-item {
    position: relative;
    max-width: 240px;
}

.preview-item img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.preview-name {
    margin-top: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
}

.preview-remove-btn {
    position: absolute;
    top: var(--spacing-2);
    right: var(--spacing-2);
    background: rgba(239, 68, 68, 0.9);
    border: none;
    color: white;
    border-radius: 999px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease;
}

.preview-remove-btn:hover {
    background: rgba(220, 38, 38, 0.95);
}

/* Preview Header */
.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--border-color);
}

.preview-count {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.preview-actions {
    display: flex;
    gap: var(--spacing-2);
}

/* Upload Subhint */
.upload-subhint {
    font-size: var(--font-size-xs) !important;
    color: var(--text-secondary) !important;
    opacity: 0.7;
    margin-top: var(--spacing-1);
}

/* Image Description Area */
/* Correction Fields (Aufgabe + Lösung) */
.correction-fields {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: var(--spacing-4);
}

.correction-fields .form-group {
    margin-bottom: 0;
}

.correction-fields label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.correction-fields label i {
    margin-right: 6px;
    color: var(--primary-color);
}

#correction-task-input,
#correction-solution-input {
    width: 100%;
    padding: var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    resize: vertical;
    transition: border-color 0.2s ease;
    min-height: 80px;
}

#correction-solution-input {
    min-height: 120px;
}

#correction-task-input:focus,
#correction-solution-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Upload Divider */
.upload-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-4) 0;
    gap: var(--spacing-3);
}

.upload-divider::before,
.upload-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.upload-divider span {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.image-description-area {
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--border-color);
}

.image-description-area .form-group {
    margin-bottom: var(--spacing-4);
}

.image-description-area label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.image-description-area textarea {
    width: 100%;
    padding: var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    resize: vertical;
    transition: border-color 0.2s ease;
}

.image-description-area textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.image-description-area .input-actions {
    display: flex;
    gap: var(--spacing-3);
}

/* Task Generation Form */
.task-generation-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.abi-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.abi-generator-section,
.abi-admin-section {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.abi-generator-section h4,
.abi-admin-section h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--primary-color);
}

.abi-generator-status {
    min-height: 24px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.abi-upload-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.form-status {
    min-height: 24px;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.task-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    max-height: 200px;
    overflow-y: auto;
    padding-right: var(--spacing-2);
}

.task-list li {
    padding: var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface-color);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.task-link {
    margin-top: var(--spacing-2);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.task-link:hover {
    text-decoration: underline;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.form-group label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.form-group select,
.form-group input {
    padding: var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all 0.2s ease;
    background: var(--surface-color);
    color: var(--text-primary);
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
}

/* Profile Form Styles */
.profile-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.profile-section {
    background: var(--background-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    border: 1px solid var(--border-color);
}

.profile-section h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-2);
    border-bottom: 1px solid var(--border-color);
}

.profile-section h4 i {
    font-size: var(--font-size-sm);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-4);
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-3);
    margin-top: var(--spacing-2);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: var(--font-size-sm);
}

.checkbox-item:hover {
    background: var(--background-color);
    border-color: var(--primary-color);
}

.checkbox-item input[type="checkbox"] {
    margin: 0;
    width: auto;
    accent-color: var(--primary-color);
}

.checkbox-item:has(input:checked) {
    background: rgba(37, 99, 235, 0.08);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.profile-actions {
    display: flex;
    gap: var(--spacing-3);
    justify-content: center;
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

/* Results Section */
.results-section {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-8);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.results-container {
    padding: var(--spacing-6);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
}

.results-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.ai-response {
    background: var(--background-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    border: 1px solid var(--border-color);
}

.response-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    font-weight: 600;
    color: var(--primary-color);
}

.response-header i {
    font-size: var(--font-size-base);
}

.response-content {
    color: var(--text-primary);
    line-height: 1.7;
}

.response-content p {
    margin-bottom: var(--spacing-3);
}

/* MathJax Styling */
.response-content .MathJax {
    font-size: 1.1em;
}

.response-content .MathJax_Display {
    margin: var(--spacing-4) 0;
    text-align: center;
}

.response-content .MathJax_Display .MathJax {
    font-size: 1.2em;
}

/* Solution Interaction Section */
.solution-interaction {
    background: var(--background-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    margin-top: var(--spacing-6);
}

.interaction-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--border-color);
}

.interaction-header i {
    color: var(--primary-color);
    font-size: var(--font-size-base);
}

.interaction-header h4 {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
}

#solution-input {
    width: 100%;
    padding: var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    resize: vertical;
    min-height: 120px;
    margin-bottom: var(--spacing-4);
    transition: all 0.2s ease;
    background: var(--surface-color);
    color: var(--text-primary);
}

#solution-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

#solution-input::placeholder {
    color: var(--text-secondary);
}

.interaction-actions {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
    background: var(--surface-color);
    padding: var(--spacing-3);
    margin: calc(-1 * var(--spacing-3));
    margin-bottom: var(--spacing-3);
    border-radius: var(--radius-md);
    z-index: 100;
    transition: box-shadow 0.2s ease;
}

/* Fixierte Kopie der Button-Bar (erscheint beim Scrollen) */
.interaction-actions-fixed {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    border-bottom: 2px solid var(--border-color);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    margin: 0;
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--surface-color);
    backdrop-filter: blur(8px);
}

/* Dark mode Anpassung für fixierte Bar */
[data-theme="dark"] .interaction-actions-fixed,
.dark-mode .interaction-actions-fixed {
    background: var(--surface-color);
}

.interaction-actions .btn {
    flex: 1;
    min-width: 150px;
    justify-content: center;
}

.interaction-actions .btn[disabled] {
    opacity: 0.65;
    cursor: not-allowed;
}

.interaction-note {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-3);
}

.error-grob,
.error-folge,
.error-grobfolge,
.error-notation,
.correction-highlight,
.optimal-highlight {
    display: inline-block;
    padding: 0.35rem 0.55rem;
    border-radius: var(--radius-md);
    margin: var(--spacing-1) 0;
    line-height: 1.5;
}

.error-grob {
    background: rgba(239, 68, 68, 0.15);
    border-left: 4px solid #ef4444;
}

.error-folge {
    background: rgba(250, 204, 21, 0.2);
    border-left: 4px solid #facc15;
}

.error-grobfolge {
    background: rgba(249, 115, 22, 0.18);
    border-left: 4px solid #f97316;
}

.error-notation {
    background: rgba(59, 130, 246, 0.18);
    border-left: 4px solid #3b82f6;
}

.correction-highlight {
    background: rgba(14, 165, 233, 0.18);
    border-left: 4px solid #0ea5e9;
}

.optimal-highlight {
    background: rgba(16, 185, 129, 0.18);
    border-left: 4px solid #10b981;
}

/* Error type label icons for accessibility */
.error-grob::before,
.error-folge::before,
.error-grobfolge::before,
.error-notation::before {
    margin-right: var(--spacing-2);
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: var(--font-size-xs);
}

.error-grob::before {
    content: '\f06a'; /* exclamation-circle */
    color: #ef4444;
}

.error-folge::before {
    content: '\f0c1'; /* link */
    color: #facc15;
}

.error-grobfolge::before {
    content: '\f071'; /* exclamation-triangle */
    color: #f97316;
}

.error-notation::before {
    content: '\f303'; /* pencil-alt */
    color: #3b82f6;
}

#feedback-area {
    margin-top: var(--spacing-6);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feedback-response {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(37, 99, 235, 0.02) 100%);
    border-left: 4px solid var(--primary-color);
}

/* Drawing Section */
.solution-section {
    margin-bottom: var(--spacing-6);
}

.solution-section label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

/* Solution math-field for formula input */
.solution-math-field {
    min-height: 80px;
}

/* Sketch Toggle Button */
.sketch-toggle-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    margin-bottom: var(--spacing-4);
    border: 2px dashed var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.sketch-toggle-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(230, 57, 70, 0.05);
}

.sketch-toggle-btn.active {
    border-color: var(--primary-color);
    border-style: solid;
    color: var(--primary-color);
    background: rgba(230, 57, 70, 0.1);
}

.sketch-toggle-btn .toggle-icon {
    transition: transform 0.3s ease;
}

/* GeoGebra Inline-Rechner Toggle */
.ggb-inline-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    margin-bottom: var(--spacing-4);
    border: 2px dashed var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    cursor: pointer;
}

.ggb-inline-toggle:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.ggb-inline-toggle.active {
    border-color: var(--primary-color);
    border-style: solid;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.ggb-inline-toggle .toggle-icon {
    transition: transform 0.3s ease;
}

.ggb-inline-section {
    margin-bottom: var(--spacing-6);
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, margin 0.3s ease;
    max-height: 2000px;
}

.ggb-inline-section.collapsed {
    max-height: 0;
    opacity: 0;
    margin-bottom: 0;
    pointer-events: none;
}

.ggb-inline-container {
    width: 100%;
    min-height: 400px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

/* Hinweis: Kein Taschenrechner erlaubt */
.calculator-notice {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    margin-bottom: var(--spacing-4);
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: var(--radius-md);
    color: #92400e;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.calculator-notice i {
    color: #f59e0b;
}

.drawing-section {
    margin-bottom: var(--spacing-6);
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, margin 0.3s ease;
    max-height: 2000px;
}

.drawing-section.collapsed {
    max-height: 0;
    opacity: 0;
    margin-bottom: 0;
    pointer-events: none;
}

.drawing-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.drawing-header label {
    font-weight: 500;
    color: var(--text-primary);
}

.drawing-tabs {
    display: flex;
    gap: var(--spacing-2);
}

.drawing-tab-btn {
    padding: var(--spacing-2) var(--spacing-4);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--background-color);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.drawing-tab-btn:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.drawing-tab-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.canvas-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.drawing-canvas {
    display: none;
    width: 100%;
    height: auto;
    cursor: crosshair;
}

.drawing-canvas.active {
    display: block;
}

/* Canvas Page Navigation */
.canvas-page-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
}

.page-indicator {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    padding: 0 var(--spacing-3);
    min-width: 80px;
    text-align: center;
}

/* Fullscreen Button */
.fullscreen-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.fullscreen-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Fullscreen Mode */
.drawing-section.fullscreen-mode {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    background: var(--background-color);
    padding: var(--spacing-4);
    display: flex;
    flex-direction: column;
    margin: 0 !important;
}

.drawing-section.fullscreen-mode .drawing-header {
    flex-shrink: 0;
}

.drawing-section.fullscreen-mode .canvas-container {
    flex: 1;
    max-width: none;
    max-height: calc(100vh - 200px);
    display: flex;
    flex-direction: column;
}

.drawing-section.fullscreen-mode .drawing-canvas {
    max-height: calc(100vh - 280px);
    object-fit: contain;
}

.drawing-section.fullscreen-mode .drawing-tools {
    flex-shrink: 0;
}

.drawing-tools {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background: var(--background-color);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-4);
}

.tool-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.tool-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.tool-btn {
    width: 40px;
    height: 40px;
    padding: 0;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tool-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

#pen-color {
    width: 50px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.color-preset {
    width: 30px;
    height: 30px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
}

.color-preset:hover {
    transform: scale(1.1);
    border-color: var(--text-primary);
}

#pen-width {
    width: 100px;
}

#pen-width-display {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 500;
    min-width: 40px;
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
}

/* Submitted Drawings Display */
.submitted-drawings {
    margin-bottom: var(--spacing-6);
    padding: var(--spacing-4);
    background: var(--background-color);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.submitted-drawings h5 {
    margin: 0 0 var(--spacing-3) 0;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.drawing-previews {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-4);
}

.drawing-preview {
    text-align: center;
}

.drawing-preview img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
}

.drawing-preview p {
    margin-top: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

/* Mathematische Formeln hervorheben */
.response-content mjx-container {
    display: inline-block;
    margin: 0 2px;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
}

.response-content mjx-container[display="true"] {
    display: block;
    text-align: center;
    margin: var(--spacing-3) 0;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

.response-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.response-content em {
    color: var(--text-secondary);
    font-style: italic;
}

/* Loading Indicator */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-8);
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-indicator p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

/* Generic loading overlay for async actions */
.loading-overlay {
    position: relative;
}

.loading-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.7);
    border-radius: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.loading-overlay.is-loading::after {
    opacity: 1;
    pointer-events: auto;
}

.btn.is-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn.is-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-secondary.is-loading::after {
    border-color: rgba(0, 0, 0, 0.15);
    border-top-color: var(--primary-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-5);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.close-modal {
    background: none;
    border: none;
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.close-modal:hover {
    background: var(--background-color);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-5);
}

.modal-footer {
    display: flex;
    gap: var(--spacing-3);
    justify-content: flex-end;
    padding: var(--spacing-5);
    border-top: 1px solid var(--border-color);
}

/* Notifications */
.notification {
    position: fixed;
    top: var(--spacing-4);
    right: var(--spacing-4);
    padding: var(--spacing-3) var(--spacing-5);
    padding-right: var(--spacing-10);
    border-radius: var(--radius-md);
    color: white;
    font-weight: 500;
    z-index: 1001;
    animation: slideIn 0.3s ease;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.notification-dismiss {
    position: absolute;
    top: 50%;
    right: var(--spacing-2);
    transform: translateY(-50%);
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    padding: var(--spacing-1);
    font-size: var(--font-size-sm);
    line-height: 1;
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
}

.notification-dismiss:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.notification-success {
    background: var(--success-color);
}

.notification-warning {
    background: var(--warning-color);
}

.notification-error {
    background: var(--error-color);
}

.notification-info {
    background: var(--primary-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Footer */
.footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-6) 0;
    text-align: center;
    color: var(--text-secondary);
    margin-left: 0;
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }
    
    .header .container {
        gap: var(--spacing-4);
    }
    
    .nav {
        display: none;
    }
    
    .sidebar-toggle {
        display: inline-flex;
        align-items: center;
        gap: var(--spacing-2);
        background: var(--surface-color);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: var(--spacing-2);
        color: var(--text-primary);
        cursor: pointer;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-3);
    }
    
    .header {
        padding: 0 var(--spacing-3);
    }
    
    .welcome-content h2 {
        font-size: var(--font-size-xl);
    }
    
    .input-tabs {
        flex-direction: column;
        padding: var(--spacing-2);
    }
    
    .tab-btn {
        justify-content: flex-start;
        padding: var(--spacing-3);
    }
    
    .task-generation-form {
        grid-template-columns: 1fr;
    }
    
    .input-actions {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-4);
    }
    
    .notification {
        right: var(--spacing-2);
        left: var(--spacing-2);
    }
    
    .interaction-actions {
        flex-direction: column;
    }
    
    .interaction-actions .btn {
        width: 100%;
    }
    
    .drawing-tabs {
        flex-direction: column;
        width: 100%;
    }
    
    .drawing-tab-btn {
        width: 100%;
        justify-content: center;
    }
    
    .drawing-tools {
        flex-direction: column;
        align-items: stretch;
    }
    
    .tool-group {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .canvas-container {
        max-width: 100%;
    }
    
    .drawing-canvas {
        touch-action: none;
    }
}

@media (max-width: 480px) {
    .welcome-content h2 {
        font-size: var(--font-size-lg);
    }
    
    .tab-content {
        padding: var(--spacing-4);
    }
    
    .input-header h3 {
        font-size: var(--font-size-lg);
    }
    
    .btn {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-sm);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-logo {
        margin: 0 auto;
    }

    .action-card {
        min-width: auto;
        max-width: 100%;
    }

    .dashboard-actions {
        padding: 0;
    }
}

/* ==================== LOGIN PAGE STYLES ==================== */

/* Login Page Layout */
.login-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.login-page .header {
    background: transparent;
    border-bottom: none;
    box-shadow: none;
}

.login-page .logo h1 {
    color: white;
}

.login-page .logo i,
.login-page .logo .logo-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.login-page .logo .logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    object-fit: contain;
    background: rgba(255, 255, 255, 0.15);
    padding: 4px;
}

.login-page .footer {
    background: transparent;
    border-top: none;
    color: rgba(255, 255, 255, 0.8);
}

.login-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8) var(--spacing-4);
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-6);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-6);
}

.login-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.login-header p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Auth Forms */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-5);
}

.auth-form .form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.auth-form label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.auth-form label i {
    color: var(--primary-color);
}

.auth-form input[type="text"],
.auth-form input[type="email"],
.auth-form input[type="password"] {
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all 0.2s;
    width: 100%;
}

.auth-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.auth-form small {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Password Input with Toggle */
.password-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-wrapper input {
    flex: 1;
    padding-right: var(--spacing-12);
}

.toggle-password {
    position: absolute;
    right: var(--spacing-3);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.toggle-password:hover {
    color: var(--primary-color);
}

/* Password Strength Indicator */
.password-strength {
    margin-top: var(--spacing-3);
    padding: var(--spacing-3);
    background: var(--background-color);
    border-radius: var(--radius-md);
}

.strength-bar {
    height: 6px;
    background: var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-2);
}

.strength-bar-fill {
    height: 100%;
    transition: width 0.3s, background-color 0.3s;
    border-radius: var(--radius-sm);
}

.strength-bar-fill.strength-weak {
    background: var(--error-color);
}

.strength-bar-fill.strength-medium {
    background: var(--warning-color);
}

.strength-bar-fill.strength-strong {
    background: var(--success-color);
}

.strength-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-2);
}

.strength-text span:last-child {
    font-weight: 600;
}

.strength-text .strength-weak {
    color: var(--error-color);
}

.strength-text .strength-medium {
    color: var(--warning-color);
}

.strength-text .strength-strong {
    color: var(--success-color);
}

.strength-requirements {
    list-style: none;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Form Options */
.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
}

.link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color 0.2s;
}

.link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Form Divider */
.form-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--spacing-2) 0;
}

.form-divider::before,
.form-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.form-divider span {
    padding: 0 var(--spacing-3);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Auth Loading */
.auth-loading {
    text-align: center;
    padding: var(--spacing-6);
}

.auth-loading .spinner {
    margin: 0 auto var(--spacing-4);
}

.auth-loading p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* Auth Messages */
.auth-message {
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-4);
    font-size: var(--font-size-sm);
    text-align: center;
}

.auth-message-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.auth-message-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.auth-message-info {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

/* ==================== USER INFO HEADER ==================== */

.header .user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.user-details {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.user-email {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.user-actions {
    display: flex;
    gap: var(--spacing-2);
    margin-left: auto;
}

.settings-btn,
.logout-btn {
    padding: var(--spacing-2);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
}

.settings-btn:hover {
    background: var(--background-color);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--error-color);
    color: var(--error-color);
}

/* ==================== INTERVENTION WARNINGS ==================== */

.intervention-warning {
    padding: var(--spacing-4);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(251, 191, 36, 0.1) 100%);
    border-left: 4px solid var(--warning-color);
    border-radius: var(--radius-md);
    margin: var(--spacing-4) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    animation: slideInRight 0.3s ease-out;
}

.intervention-warning.type-error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(252, 165, 165, 0.1) 100%);
    border-left-color: var(--error-color);
}

.intervention-warning.type-info {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(96, 165, 250, 0.1) 100%);
    border-left-color: var(--primary-color);
}

.intervention-warning.type-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(110, 231, 183, 0.1) 100%);
    border-left-color: var(--success-color);
}

.intervention-icon {
    font-size: var(--font-size-xl);
    color: var(--warning-color);
    flex-shrink: 0;
}

.intervention-warning.type-error .intervention-icon {
    color: var(--error-color);
}

.intervention-warning.type-info .intervention-icon {
    color: var(--primary-color);
}

.intervention-warning.type-success .intervention-icon {
    color: var(--success-color);
}

.intervention-content {
    flex: 1;
}

.intervention-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.intervention-message {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.intervention-actions {
    margin-top: var(--spacing-3);
    display: flex;
    gap: var(--spacing-2);
}

.intervention-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-1);
    transition: color 0.2s;
    flex-shrink: 0;
}

.intervention-close:hover {
    color: var(--text-primary);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==================== MOBILE RESPONSIVE ==================== */

@media (max-width: 768px) {
    .login-card {
        padding: var(--spacing-6);
    }
    
    .login-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .user-details {
        display: none;
    }
    
    .intervention-warning {
        flex-direction: column;
        text-align: center;
    }
    
    .intervention-icon {
        align-self: center;
    }
}

/* Follow-up Chat Styles */
.followup-chat-section {
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    box-shadow: var(--shadow);
    margin-top: var(--spacing-6);
    border: 1px solid var(--primary-color);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.followup-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-5);
    padding-bottom: var(--spacing-4);
    border-bottom: 2px solid var(--border-color);
}

.followup-header i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
}

.followup-header h4 {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    font-weight: 600;
}

.followup-messages {
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: var(--spacing-5);
    padding: var(--spacing-4);
    background-color: var(--background-color);
    border-radius: var(--radius-md);
}

.followup-messages:empty {
    display: none;
}

.followup-message {
    margin-bottom: var(--spacing-4);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.followup-message-user {
    background-color: var(--primary-color);
    color: white;
    margin-left: 20%;
}

.followup-message-ai {
    background-color: white;
    border: 1px solid var(--border-color);
    margin-right: 20%;
}

.followup-message .message-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.followup-message-user .message-header {
    color: rgba(255, 255, 255, 0.9);
}

.followup-message-ai .message-header {
    color: var(--text-secondary);
}

.followup-message .message-content {
    line-height: 1.6;
    font-size: var(--font-size-base);
}

.followup-message-user .message-content {
    color: white;
}

.followup-message-ai .message-content {
    color: var(--text-primary);
}

.followup-input-area {
    display: flex;
    gap: var(--spacing-4);
    align-items: flex-end;
}

.followup-input-area textarea {
    flex: 1;
    padding: var(--spacing-4);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    resize: vertical;
    min-height: 80px;
    transition: all 0.2s ease;
}

.followup-input-area textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.followup-input-area button {
    padding: var(--spacing-4) var(--spacing-6);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    height: fit-content;
}

.followup-input-area button i {
    font-size: var(--font-size-base);
}

/* Scrollbar Styling für Follow-up Messages */
.followup-messages::-webkit-scrollbar {
    width: 8px;
}

.followup-messages::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}

.followup-messages::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: var(--radius-sm);
}

.followup-messages::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Responsive Design für Follow-up Chat */
@media (max-width: 768px) {
    .followup-message-user,
    .followup-message-ai {
        margin-left: 0;
        margin-right: 0;
    }
    
    .followup-input-area {
        flex-direction: column;
        gap: var(--spacing-3);
    }
    
    .followup-input-area button {
        width: 100%;
        justify-content: center;
    }
}

/* ==================== EXPLAIN CHAT ==================== */

.explain-chat {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.explain-msg {
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.explain-msg-user {
    background: rgba(37, 99, 235, 0.06);
    border: 1px solid rgba(37, 99, 235, 0.15);
    margin-left: 2rem;
}

.explain-msg-assistant {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    margin-right: 1rem;
}

.explain-msg-header {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.explain-msg-user .explain-msg-header {
    color: var(--primary-color);
}

.explain-msg-body {
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-primary);
}

.explain-msg-body p {
    margin-bottom: var(--spacing-2);
}

/* Follow-up-Bereich */
.explain-followup {
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-4);
    border-top: 2px solid var(--border-color);
}

.explain-followup-input {
    display: flex;
    gap: var(--spacing-3);
    align-items: flex-end;
    margin-bottom: var(--spacing-3);
    flex-wrap: wrap;
}

/* Extra math-field lines in followup input go to new row */
.explain-followup-input math-field.ml-line[data-line-field] {
    flex-basis: 100%;
    order: 1;
}

.explain-followup-input .math-field-input {
    flex: 1;
    min-height: 50px;
}

.explain-followup-input .btn {
    padding: var(--spacing-3) var(--spacing-4);
    height: fit-content;
}

.explain-followup-actions {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

.explain-followup-actions .btn {
    font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
    .explain-msg-user { margin-left: 0.5rem; }
    .explain-msg-assistant { margin-right: 0; }
    .explain-followup-input { flex-direction: column; }
    .explain-followup-input .btn { width: 100%; justify-content: center; }
    .explain-followup-actions { flex-direction: column; }
    .explain-followup-actions .btn { width: 100%; justify-content: center; }
}

/* ==================== TUTOR VIEW STYLES ==================== */

/* Step List Container */
.tutor-response-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.tutor-steps-wrapper,
.tutor-feedback-wrapper {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    border: 1px solid var(--border-color);
}

.tutor-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--border-color);
}

.tutor-section-header i {
    color: var(--accent-color);
}

/* Step List */
.tutor-step-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

/* Individual Step */
.tutor-step {
    display: flex;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: var(--background-color);
    border-radius: var(--radius-md);
    border-left: 4px solid transparent;
    transition: all 0.2s ease;
}

.tutor-step:hover {
    background: var(--border-color);
}

/* Step Number */
.tutor-step-num {
    font-weight: 700;
    color: var(--text-secondary);
    min-width: 28px;
    font-size: var(--font-size-base);
}

/* Step Content */
.tutor-step-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.tutor-step-latex {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.tutor-step-raw {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
}

.tutor-step-comment {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    padding: var(--spacing-2) var(--spacing-3);
    background: rgba(14, 165, 233, 0.08);
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--accent-color);
}

/* Step Error Type Colors - Wissenschaftlicher Stil */
.tutor-step.step-error-logic {
    border-left-color: #f87171;
    background: rgba(248, 113, 113, 0.08);
}

.tutor-step.step-error-calc {
    border-left-color: #f87171;
    background: rgba(248, 113, 113, 0.08);
}

.tutor-step.step-error-followup {
    border-left-color: #fbbf24;
    background: rgba(251, 191, 36, 0.08);
}

.tutor-step.step-error-formal {
    border-left-color: #60a5fa;
    background: rgba(96, 165, 250, 0.08);
}

/* Step Elements Container */
.tutor-step-elements {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    margin-top: var(--spacing-2);
}

/* ==================== INFO BOX ==================== */

.tutor-info-box {
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-md);
    border-left: 4px solid;
    background: var(--background-color);
}

.tutor-info-box-title {
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-1);
}

.tutor-info-box-text {
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.tutor-info-box-links {
    margin-top: var(--spacing-2);
    color: var(--text-secondary);
}

/* Info Box Colors - Wissenschaftlicher Stil (besserer Kontrast) */
.info-box-red {
    border-left-color: #f87171;
    background: rgba(248, 113, 113, 0.08);
}

.info-box-red .tutor-info-box-title {
    color: #fca5a5;
}

.info-box-red .tutor-info-box-text {
    color: var(--text-primary);
}

.info-box-green {
    border-left-color: #4ade80;
    background: rgba(74, 222, 128, 0.08);
}

.info-box-green .tutor-info-box-title {
    color: #86efac;
}

.info-box-green .tutor-info-box-text {
    color: var(--text-primary);
}

.info-box-orange {
    border-left-color: #fbbf24;
    background: rgba(251, 191, 36, 0.08);
}

.info-box-orange .tutor-info-box-title {
    color: #fcd34d;
}

.info-box-orange .tutor-info-box-text {
    color: var(--text-primary);
}

.info-box-blue {
    border-left-color: #60a5fa;
    background: rgba(96, 165, 250, 0.08);
}

.info-box-blue .tutor-info-box-title {
    color: #93c5fd;
}

.info-box-blue .tutor-info-box-text {
    color: var(--text-primary);
}

/* ==================== HINT CHIP ==================== */

.tutor-hint-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    cursor: default;
    transition: transform 0.15s ease;
}

.tutor-hint-chip:hover {
    transform: scale(1.02);
}

.tutor-hint-chip i {
    font-size: 0.7rem;
}

/* Hint Chip Colors - Wissenschaftlicher Stil (hoher Kontrast für helles Popup) */
.hint-chip-red {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.hint-chip-green {
    background: #f0fdf4;
    color: #15803d;
    border: 1px solid #bbf7d0;
}

.hint-chip-orange {
    background: #fffbeb;
    color: #b45309;
    border: 1px solid #fde68a;
}

.hint-chip-blue {
    background: #eff6ff;
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
}

.hint-chip-yellow {
    background: #fefce8;
    color: #a16207;
    border: 1px solid #fef08a;
}

.hint-level1-panel {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin: var(--spacing-4) 0;
}

.hint-level1-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    color: var(--text-secondary);
    font-weight: 600;
}

.hint-level1-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--text-primary);
}

.hint-level1-panel.closed .hint-chip-list {
    display: none;
}

.hint-chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

/* Chips im Modal - als Karten statt Pillen für längeren Text */
.hint-modal .hint-chip-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.hint-modal .tutor-hint-chip {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    white-space: normal;
    text-align: left;
}

.hint-modal .tutor-hint-chip i {
    flex-shrink: 0;
    margin-top: 2px;
}

.hint-level1-closed {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.hint-reopen-btn {
    margin-top: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
}

/* Hint-Modal: Helles wissenschaftliches Design */
.hint-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.hint-modal {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    max-width: 520px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.25), 
                0 8px 16px -8px rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.hint-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-3);
    border-bottom: 1px solid var(--border-color);
}

.hint-modal-header .hint-level1-title {
    color: var(--primary-color);
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.hint-modal-header .hint-level1-title i {
    color: var(--warning-color);
}

.hint-modal-close {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    line-height: 1;
    padding: var(--spacing-2);
    transition: all 0.2s ease;
}

.hint-modal-close:hover {
    background: var(--error-color);
    border-color: var(--error-color);
    color: white;
}

.hint-level2-popup {
    margin-top: var(--spacing-4);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.hint-level2-title {
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
}

.hint-level2-title i {
    color: var(--accent-color);
}

.hint-level2-row {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-2) var(--spacing-3);
    background: white;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.hint-level2-step {
    font-weight: 700;
    color: var(--primary-color);
    background: #eff6ff;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
}

.hint-level2-text {
    color: var(--text-primary);
    font-weight: 500;
    flex: 1;
    min-width: 200px;
    line-height: 1.5;
}

.hint-level2-row:last-child {
    border-bottom: none;
}
.step-hint-annotations {
    margin-top: var(--spacing-3);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.hint-annotation {
    border-radius: var(--radius-sm);
    padding: var(--spacing-2) var(--spacing-3);
    border-left: 3px solid #60a5fa;
    background: rgba(96, 165, 250, 0.08);
}

.hint-annotation-title {
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
}

/* Connector-Pfeil für visuelle Verbindung zum Step */
.hint-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(96, 165, 250, 0.15);
    color: #60a5fa;
    font-size: 0.75rem;
    margin-bottom: var(--spacing-2);
}

.hint-annotation-green .hint-connector {
    background: rgba(74, 222, 128, 0.15);
    color: #4ade80;
}

/* Step-Content Markierung wenn Hint verbunden ist */
.step-content.has-hint-connection {
    border-left: 3px solid #60a5fa;
    padding-left: var(--spacing-3);
    margin-left: var(--spacing-1);
    background: rgba(96, 165, 250, 0.03);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.hint-annotation-blue {
    border-left-color: #60a5fa;
    background: rgba(96, 165, 250, 0.08);
}

.hint-annotation-green {
    border-left-color: #4ade80;
    background: rgba(74, 222, 128, 0.08);
}

.tutor-step.has-level2-hint {
    border-color: rgba(41, 182, 246, 0.4);
    box-shadow: 0 0 0 1px rgba(41, 182, 246, 0.2);
}

/* ==================== COMPARISON VIEW (Side-by-Side) ==================== */

.comparison-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    margin: var(--spacing-3) 0;
    background: var(--background-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-2);
    border: 1px solid var(--border-color);
}

.comparison-header {
    display: grid;
    grid-template-columns: 1fr 2px 1fr;
    gap: 0;
    padding-bottom: var(--spacing-2);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-1);
}

.comparison-col {
    padding: var(--spacing-1) var(--spacing-2);
}

.comparison-divider {
    background: var(--border-color);
    width: 2px;
    min-height: 100%;
}

.comparison-wrong-header {
    color: #fca5a5;
    font-weight: 600;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.comparison-correct-header {
    color: #86efac;
    font-weight: 600;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 2px 1fr;
    gap: 0;
    align-items: stretch;
}

.comparison-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    background: transparent;
    font-size: var(--font-size-sm);
}

.comparison-step.has-error {
    background: rgba(239, 83, 80, 0.08);
}

.comparison-step.correct {
    background: rgba(102, 187, 106, 0.08);
}

.comparison-step.comparison-empty {
    color: var(--text-secondary);
    opacity: 0.5;
    justify-content: center;
}

.comparison-step-num {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    min-width: 20px;
}

.comparison-error-badge {
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 999px;
    background: rgba(248, 113, 113, 0.2);
    color: #fca5a5;
    font-weight: 600;
    margin-left: auto;
}

.comparison-correct-badge {
    color: #86efac;
    font-size: var(--font-size-xs);
    margin-left: auto;
}

.comparison-step-latex {
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    flex: 1;
}

.comparison-explanation {
    grid-column: 1 / -1;
    padding: var(--spacing-1) var(--spacing-2);
    margin: var(--spacing-1) 0;
    background: rgba(255, 193, 7, 0.06);
    border-left: 2px solid #ffc107;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
}

.comparison-explanation i {
    color: #ffc107;
    margin-top: 2px;
}

/* ==================== DETAILED FEEDBACK (Inline Box) ==================== */

.detailed-feedback-box {
    margin: var(--spacing-4) 0;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.detailed-feedback-header {
    padding: var(--spacing-2) var(--spacing-3);
    background: rgba(255, 255, 255, 0.04);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.detailed-feedback-header i {
    color: var(--accent-color);
}

.detailed-feedback-content {
    padding: var(--spacing-3);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

/* ==================== DETAILED FEEDBACK (Level 3 Popup) ==================== */

.hint-modal-large {
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.detailed-feedback-popup {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
}

.feedback-section {
    padding: var(--spacing-3);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
}

.feedback-section h5 {
    margin: 0 0 var(--spacing-2) 0;
    font-size: var(--font-size-sm);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.feedback-section ul {
    margin: 0;
    padding-left: var(--spacing-5);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.feedback-section li {
    margin-bottom: var(--spacing-1);
}

.feedback-strengths {
    border-left: 3px solid #4ade80;
}

.feedback-strengths h5 {
    color: #86efac;
}

.feedback-weaknesses {
    border-left: 3px solid #f87171;
}

.feedback-weaknesses h5 {
    color: #fca5a5;
}

.feedback-tips {
    border-left: 3px solid #60a5fa;
}

.feedback-tips h5 {
    color: #93c5fd;
}

.feedback-encouragement {
    background: rgba(251, 191, 36, 0.08);
    border-left: 3px solid #fbbf24;
    text-align: center;
}

.feedback-encouragement p {
    margin: 0;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.feedback-encouragement i {
    color: #fcd34d;
    margin-right: var(--spacing-1);
}

/* Responsive Comparison */
@media (max-width: 768px) {
    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-2);
    }
    
    .comparison-col {
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        padding-bottom: var(--spacing-3);
    }
    
    .comparison-col:last-child {
        border-bottom: none;
    }
}

/* ==================== LINK MARKER ==================== */

.tutor-link-marker {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    background: rgba(251, 140, 0, 0.08);
    border: 1px dashed rgba(251, 140, 0, 0.3);
}

.tutor-link-marker i {
    color: #fcd34d;
}

.tutor-link-marker-text {
    color: var(--text-secondary);
}

.tutor-link-marker-refs {
    color: var(--text-secondary);
    opacity: 0.7;
}

.link-marker-red {
    background: rgba(248, 113, 113, 0.08);
    border-color: rgba(248, 113, 113, 0.3);
}

.link-marker-red i {
    color: #fca5a5;
}

.link-marker-green {
    background: rgba(74, 222, 128, 0.08);
    border-color: rgba(74, 222, 128, 0.3);
}

.link-marker-green i {
    color: #86efac;
}

.link-marker-orange {
    background: rgba(251, 191, 36, 0.08);
    border-color: rgba(251, 191, 36, 0.3);
}

.link-marker-orange i {
    color: #fcd34d;
}

.link-marker-blue {
    background: rgba(96, 165, 250, 0.08);
    border-color: rgba(96, 165, 250, 0.3);
}

.link-marker-blue i {
    color: #93c5fd;
}

/* ==================== FEEDBACK PANEL ==================== */

.tutor-feedback-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.tutor-feedback-summary {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    padding: var(--spacing-3);
    background: rgba(61, 214, 140, 0.06);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-color);
}

.tutor-feedback-section {
    padding: var(--spacing-3);
    border-radius: var(--radius-md);
}

.tutor-feedback-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.tutor-feedback-list {
    list-style: none;
    padding-left: var(--spacing-4);
    margin: 0;
}

.tutor-feedback-list li {
    position: relative;
    padding: var(--spacing-1) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.tutor-feedback-list li::before {
    content: "•";
    position: absolute;
    left: calc(-1 * var(--spacing-3));
    color: inherit;
}

/* Feedback Section Types - Wissenschaftlicher Stil */
.tutor-feedback-success {
    background: rgba(74, 222, 128, 0.08);
}

.tutor-feedback-success .tutor-feedback-section-header {
    color: #86efac;
}

.tutor-feedback-success .tutor-feedback-list li::before {
    color: #86efac;
}

.tutor-feedback-success .tutor-feedback-list li {
    color: var(--text-primary);
}

.tutor-feedback-error {
    background: rgba(248, 113, 113, 0.08);
}

.tutor-feedback-error .tutor-feedback-section-header {
    color: #fca5a5;
}

.tutor-feedback-error .tutor-feedback-list li::before {
    color: #fca5a5;
}

.tutor-feedback-error .tutor-feedback-list li {
    color: var(--text-primary);
}

.tutor-feedback-info {
    background: rgba(96, 165, 250, 0.08);
}

.tutor-feedback-info .tutor-feedback-section-header {
    color: #93c5fd;
}

.tutor-feedback-info .tutor-feedback-list li::before {
    color: #93c5fd;
}

.tutor-feedback-info .tutor-feedback-list li {
    color: var(--text-primary);
}

/* ==================== DEMO VIEW ==================== */

.tutor-view-demo-section {
    margin-top: var(--spacing-8);
    padding: var(--spacing-6);
    background: var(--surface-color);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
}

.tutor-view-demo-section h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.tutor-view-demo-section h3 i {
    color: var(--accent-color);
}

/* Responsive */
@media (max-width: 768px) {
    .tutor-step {
        flex-direction: column;
        gap: var(--spacing-2);
    }
    
    .tutor-step-num {
        min-width: auto;
    }
    
    .tutor-hint-chip {
        font-size: var(--font-size-xs);
        padding: var(--spacing-1) var(--spacing-2);
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .input-tabs,
    .input-actions,
    .modal,
    .intervention-warning,
    .logout-btn,
    .followup-chat-section {
        display: none !important;
    }
    
    .main {
        padding: 0;
    }
    
    .results-section {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
    
    .tutor-step,
    .tutor-info-box,
    .tutor-feedback-section {
        break-inside: avoid;
    }
}

/* ==================== Error Analysis Feedback Styles ==================== */

/* Feedback Header */
.feedback-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-5);
    font-size: var(--font-size-lg);
}

.feedback-header i {
    font-size: var(--font-size-xl);
}

.feedback-header.feedback-success {
    background: rgba(61, 214, 140, 0.15);
    border: 1px solid rgba(61, 214, 140, 0.3);
    color: var(--success-color);
}

.feedback-header.feedback-error {
    background: rgba(229, 57, 53, 0.12);
    border: 1px solid rgba(229, 57, 53, 0.25);
    color: #ff6b6b;
}

/* Feedback Images */
.feedback-images {
    margin-bottom: var(--spacing-5);
}

.feedback-images h5 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.feedback-images-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.feedback-image-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
}

.feedback-image-wrapper img {
    max-width: 200px;
    max-height: 150px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.feedback-image-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Tutor Response Wrapper */
.tutor-response-wrapper {
    margin-bottom: var(--spacing-5);
}

/* Error Type Legend */
.error-type-legend {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4) var(--spacing-5);
    margin-top: var(--spacing-5);
}

.error-type-legend h5 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.error-type-legend ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.error-type-legend li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.legend-color.legend-logic {
    background: #f87171;
}

.legend-color.legend-calc {
    background: #4ade80;
}

.legend-color.legend-followup {
    background: #fbbf24;
}

.legend-color.legend-formal {
    background: #60a5fa;
}

/* Feedback Fallback (JSON display) */
.feedback-fallback {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    overflow-x: auto;
}

.feedback-fallback pre {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .error-type-legend ul {
        flex-direction: column;
        gap: var(--spacing-2);
    }
    
    .feedback-header {
        flex-direction: column;
        text-align: center;
    }
}

/* ==================== Strukturierte Fehleranalyse Styles ==================== */

/* Feedback Status Banner */
.feedback-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-base);
}

.feedback-status.success {
    background: rgba(61, 214, 140, 0.15);
    border: 1px solid rgba(61, 214, 140, 0.4);
    color: var(--success-color);
}

.feedback-status.error {
    background: rgba(230, 57, 70, 0.15);
    border: 1px solid rgba(230, 57, 70, 0.4);
    color: var(--error-color);
}

.feedback-status i {
    font-size: 1.5rem;
}

/* Tutor Steps Wrapper */
.tutor-steps-wrapper {
    margin-bottom: var(--spacing-6);
}

.tutor-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-4);
    padding-bottom: var(--spacing-2);
    border-bottom: 1px solid var(--border-color);
}

.tutor-section-header i {
    color: var(--primary-color);
}

/* Step List */
.tutor-step-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

/* Single Step */
.tutor-step {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
    background: var(--surface-color);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--border-color);
    transition: all 0.2s ease;
}

.tutor-step:hover {
    background: rgba(255, 255, 255, 0.03);
}

/* Error Type Colors for Steps - Wissenschaftlicher Stil */
.tutor-step.step-error-logic {
    border-left-color: #f87171;
    background: rgba(248, 113, 113, 0.08);
}

.tutor-step.step-error-calc {
    border-left-color: #f87171;
    background: rgba(248, 113, 113, 0.08);
}

.tutor-step.step-error-followup {
    border-left-color: #fbbf24;
    background: rgba(251, 191, 36, 0.08);
}

.tutor-step.step-error-formal {
    border-left-color: #60a5fa;
    background: rgba(96, 165, 250, 0.08);
}

/* Step Content Wrapper */
.tutor-step-content-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

/* Step Number */
.tutor-step-num {
    font-weight: 700;
    color: var(--text-secondary);
    min-width: 2rem;
    font-size: var(--font-size-lg);
}

/* Step Content */
.tutor-step-content {
    flex: 1;
    min-width: 0;
}

.tutor-step-latex {
    font-size: 1.1rem;
    color: var(--text-primary);
    word-break: break-word;
}

.tutor-step-raw {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-style: italic;
    margin-top: var(--spacing-1);
}

/* Step Operation (Pipe Format) */
.tutor-step-operation {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-family: 'Fira Code', 'Monaco', monospace;
    white-space: nowrap;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Error Badge */
.tutor-error-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tutor-error-badge.error-logic {
    background: rgba(248, 113, 113, 0.2);
    color: #fca5a5;
}

.tutor-error-badge.error-calc {
    background: rgba(74, 222, 128, 0.2);
    color: #86efac;
}

.tutor-error-badge.error-followup {
    background: rgba(251, 191, 36, 0.2);
    color: #fcd34d;
}

.tutor-error-badge.error-formal {
    background: rgba(96, 165, 250, 0.2);
    color: #93c5fd;
}

/* UI Elements */
.tutor-ui-elements {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
}

.tutor-ui-element {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
}

.tutor-ui-element.ui-color-red {
    background: rgba(248, 113, 113, 0.15);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: #fca5a5;
}

.tutor-ui-element.ui-color-green {
    background: rgba(74, 222, 128, 0.15);
    border: 1px solid rgba(74, 222, 128, 0.3);
    color: #86efac;
}

.tutor-ui-element.ui-color-orange {
    background: rgba(251, 191, 36, 0.15);
    border: 1px solid rgba(251, 191, 36, 0.3);
    color: #fcd34d;
}

.tutor-ui-element.ui-color-blue {
    background: rgba(96, 165, 250, 0.15);
    border: 1px solid rgba(96, 165, 250, 0.3);
    color: #93c5fd;
}

/* Error Summary */
.error-summary {
    margin-top: var(--spacing-6);
    padding: var(--spacing-4);
    background: rgba(230, 57, 70, 0.1);
    border: 1px solid rgba(230, 57, 70, 0.3);
    border-radius: var(--radius-md);
}

.error-summary h5 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--error-color);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-base);
}

.error-summary p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-2);
}

.error-summary .hint {
    color: var(--text-secondary);
    font-style: italic;
    opacity: 0.8;
}

/* Graph Modal */
.graph-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.graph-modal.active {
    opacity: 1;
    visibility: visible;
}

.graph-modal-content {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    max-width: 90%;
    max-height: 90%;
    overflow: auto;
    position: relative;
}

.graph-modal-close {
    position: absolute;
    top: var(--spacing-3);
    right: var(--spacing-3);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s ease;
}

.graph-modal-close:hover {
    color: var(--error-color);
}

.graph-container {
    min-width: 400px;
    min-height: 300px;
    background: white;
    border-radius: var(--radius-md);
}

/* Clickable Formula */
.clickable-formula {
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 1px dashed var(--primary-color);
}

.clickable-formula:hover {
    background: rgba(230, 57, 70, 0.1);
    border-bottom-style: solid;
}

/* ==================== GeoGebra Integration ==================== */

/* App Switcher Buttons */
.ggb-app-switcher {
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    background: var(--background-color);
    padding: 4px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.ggb-app-btn {
    flex: 1;
    padding: 10px 16px;
    border: none !important;
    background: transparent !important;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: calc(var(--radius-lg) - 2px);
    transition: all 0.2s ease;
    font-family: var(--font-family);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: none !important;
    outline: none;
    line-height: 1.4;
}

.ggb-app-btn i {
    font-size: 1rem;
}

.ggb-app-btn:hover {
    background: rgba(0, 0, 0, 0.05) !important;
    color: var(--text-primary);
}

.ggb-app-btn.active {
    background: var(--surface-color) !important;
    color: var(--primary-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.08) !important;
}

/* GeoGebra Container */
.ggb-container {
    width: 100%;
    min-height: 550px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: #fff;
}

/* GeoGebra Modal Container */
.graph-modal .ggb-modal-container {
    min-width: 700px;
    min-height: 500px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .ggb-app-switcher {
        gap: 2px;
        padding: 3px;
    }

    .ggb-app-btn {
        padding: 8px 10px;
        font-size: var(--font-size-xs);
        gap: 4px;
    }

    .ggb-container {
        min-height: 400px;
    }

    .graph-modal .ggb-modal-container {
        min-width: unset;
        width: 100vw;
        min-height: 70vh;
    }

    .graph-modal-content {
        max-width: 100% !important;
        max-height: 100% !important;
        border-radius: 0 !important;
        padding: var(--spacing-3) !important;
    }
}

/* ==================== Feedback Summary Box ==================== */

.feedback-summary-box {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    border-left: 3px solid var(--primary-color);
}

.feedback-summary-box i {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-top: 2px;
}

.feedback-summary-box span {
    color: var(--text-primary);
    line-height: 1.5;
}

/* ==================== Klickbare Steps mit Eingabefeld ==================== */

/* Step wird klickbar wenn Fehler vorhanden */
.tutor-step.has-error {
    cursor: pointer;
    transition: all 0.2s ease;
}

.tutor-step.has-error:hover {
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.tutor-step.has-error::after {
    content: 'Klicken zum Bearbeiten';
    position: absolute;
    right: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.tutor-step.has-error:hover::after {
    opacity: 1;
}

/* Step ist expanded (Eingabefeld sichtbar) */
.tutor-step.expanded {
    background: rgba(255, 255, 255, 0.08);
}

.tutor-step.expanded::after {
    display: none;
}

/* Eingabefeld Container */
.step-correction-container {
    display: none;
    margin-top: var(--spacing-3);
    padding-top: var(--spacing-3);
    border-top: 1px solid var(--border-color);
    animation: slideDown 0.2s ease;
}

.tutor-step.expanded .step-correction-container {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-correction-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
}

.step-correction-label i {
    color: var(--accent-color);
}

.step-correction-input {
    width: 100%;
    padding: var(--spacing-3);
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Fira Code', 'Monaco', monospace;
    font-size: var(--font-size-sm);
    resize: vertical;
    min-height: 60px;
    transition: border-color 0.2s ease;
}

.step-correction-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.step-correction-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Correction Badge */
.step-has-correction {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: 2px var(--spacing-2);
    background: rgba(61, 214, 140, 0.2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--success-color);
    margin-left: var(--spacing-2);
}

.step-has-correction i {
    font-size: 0.7rem;
}

/* Hinweis für erneutes Prüfen */
.correction-hint {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: rgba(61, 214, 140, 0.1);
    border: 1px solid rgba(61, 214, 140, 0.3);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--success-color);
}

.correction-hint i {
    font-size: 1.2rem;
}

/* ==================== Test Section Styles ==================== */

.test-section {
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-6);
    border-top: 1px dashed var(--border-color);
}

.test-section h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.test-section h4 i {
    color: var(--warning-color);
}

.test-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
}

.test-buttons {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.test-buttons .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
}

.test-options-row {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
}

.test-option-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.test-option-group label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-secondary);
}

.test-option-group .select-input {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background: var(--surface-color);
    color: var(--text-primary);
}

/* Batch Progress */
#batch-progress {
    margin-top: var(--spacing-4);
}

.batch-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--surface-color);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-2);
}

.batch-progress-bar .progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.batch-progress-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Test Result Header */
.test-result-header {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    align-items: center;
    padding: var(--spacing-4);
    background: var(--surface-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    border-left: 4px solid var(--warning-color);
}

.test-result-header.test-passed {
    border-left-color: var(--success-color);
}

.test-result-header.test-failed {
    border-left-color: var(--error-color);
}

.test-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: rgba(249, 115, 22, 0.2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--warning-color);
}

.test-info {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.test-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 600;
}

.test-passed .test-status {
    color: var(--success-color);
}

.test-failed .test-status {
    color: var(--error-color);
}

/* Test Hooks Results */
.test-hooks-results {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.hook-result {
    padding: var(--spacing-3);
    background: var(--surface-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    border-left: 3px solid var(--border-color);
}

.hook-result.hook-passed {
    border-left-color: var(--success-color);
}

.hook-result.hook-failed {
    border-left-color: var(--error-color);
}

.hook-result .error {
    color: var(--error-color);
    margin-left: var(--spacing-2);
}

/* Batch Summary */
.batch-summary {
    padding: var(--spacing-4);
}

.batch-summary h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-4);
    color: var(--warning-color);
}

.batch-stats {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.batch-stats .stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-4);
    background: var(--surface-color);
    border-radius: var(--radius-md);
    min-width: 100px;
}

.batch-stats .stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

.batch-stats .stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.batch-stats .stat-total .stat-value {
    color: var(--text-primary);
}

.batch-stats .stat-passed .stat-value {
    color: var(--success-color);
}

.batch-stats .stat-failed .stat-value {
    color: var(--error-color);
}

/* Batch Results List */
.batch-results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.batch-result-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background: var(--surface-color);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--border-color);
}

.batch-result-item.passed {
    border-left-color: var(--success-color);
}

.batch-result-item.failed {
    border-left-color: var(--error-color);
}

.batch-result-item .result-icon {
    font-size: var(--font-size-lg);
}

.batch-result-item.passed .result-icon {
    color: var(--success-color);
}

.batch-result-item.failed .result-icon {
    color: var(--error-color);
}

.batch-result-item .result-task {
    font-weight: 600;
    color: var(--text-primary);
}

.batch-result-item .result-details {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.batch-result-item .view-details {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
}

/* Raw Response */
.test-raw-response {
    padding: var(--spacing-4);
    background: var(--surface-color);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-4);
}

.test-raw-response pre {
    background: var(--background-color);
    padding: var(--spacing-4);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-2);
}

/* ==================== Test Analysis Display Styles ==================== */

.test-options {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.test-options label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.test-options .select-input {
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.test-options .select-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Analysis Header */
.test-analysis-header {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    align-items: flex-start;
    padding: var(--spacing-4);
    background: linear-gradient(135deg, var(--surface-color), rgba(230, 57, 70, 0.1));
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    border-left: 4px solid var(--primary-color);
}

.test-task-info {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.test-task-info div {
    display: flex;
    gap: var(--spacing-2);
}

.solution-correct {
    color: var(--success-color);
    font-weight: 600;
}

.solution-incorrect {
    color: var(--error-color);
    font-weight: 600;
}

/* Section Boxes */
.test-section-box {
    background: var(--surface-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.test-section-box h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
    padding-bottom: var(--spacing-2);
    border-bottom: 1px solid var(--border-color);
}

.test-section-box h4 i {
    color: var(--primary-color);
}

.test-task-text {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    line-height: 1.6;
}

.test-solution-text {
    background: var(--background-color);
    padding: var(--spacing-4);
    border-radius: var(--radius-sm);
    font-family: 'Fira Code', monospace;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    white-space: pre-wrap;
    line-height: 1.8;
}

/* Expected Errors Box */
.test-expected-errors {
    border-left: 3px solid var(--warning-color);
}

.test-expected-errors h4 i {
    color: var(--warning-color);
}

.test-expected-errors ul {
    list-style: none;
    padding: 0;
}

.test-expected-errors li {
    padding: var(--spacing-2) 0;
    border-bottom: 1px dashed var(--border-color);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.test-expected-errors li:last-child {
    border-bottom: none;
}

/* Error Type Labels */
.error-type {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.error-type-calc {
    background: rgba(61, 214, 140, 0.2);
    color: var(--success-color);
}

.error-type-logic {
    background: rgba(230, 57, 70, 0.2);
    color: var(--error-color);
}

.error-type-followup {
    background: rgba(249, 115, 22, 0.2);
    color: var(--warning-color);
}

.error-type-formal {
    background: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
}

/* AI Analysis Section */
.test-ai-analysis {
    border-left: 3px solid var(--accent-color);
}

.test-ai-analysis h4 i {
    color: var(--accent-color);
}

/* Analysis Steps */
.test-analysis-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.test-step {
    background: var(--background-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-3);
    border-left: 3px solid var(--accent-color);
}

.test-step.step-error {
    border-left-color: var(--error-color);
}

.test-step.step-error-calc {
    border-left-color: var(--error-color);
}

.test-step.step-error-logic {
    border-left-color: var(--error-color);
}

.test-step.step-error-followup {
    border-left-color: var(--warning-color);
}

.test-step.step-error-formal {
    border-left-color: #3b82f6;
}

.step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2);
}

.step-number {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.step-error-type {
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    background: rgba(61, 214, 140, 0.1);
    color: var(--accent-color);
}

.step-error-type.has-error {
    background: rgba(230, 57, 70, 0.2);
    color: var(--error-color);
}

.step-content {
    color: var(--text-primary);
}

.step-raw {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-1);
}

.step-latex {
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.step-operation {
    margin-top: var(--spacing-2);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-style: italic;
}

/* Step Correct (kein Fehler) */
.tutor-step.step-correct {
    border-left-color: var(--accent-color);
}

/* Anpassung für neues tutor-step Format mit Header */
.tutor-step .step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2);
}

.tutor-step .step-number {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.tutor-step .step-error-type {
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    background: rgba(61, 214, 140, 0.1);
    color: var(--accent-color);
}

.tutor-step .step-error-type.has-error {
    background: rgba(230, 57, 70, 0.2);
    color: var(--error-color);
}

.tutor-step .step-content {
    color: var(--text-primary);
}

.tutor-step .step-raw {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
    padding: var(--spacing-2);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    font-family: 'Fira Code', monospace;
}

.tutor-step .step-latex {
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

/* Inline-Math innerhalb von gemischtem Text/Math-Inhalt */
.tutor-step .step-latex .inline-math {
    display: inline;
}

.tutor-step .step-operation {
    margin-top: var(--spacing-2);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    font-style: italic;
}

/* Test Feedback */
.test-feedback {
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

.test-feedback h5 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
}

.feedback-summary {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    line-height: 1.6;
    padding: var(--spacing-3);
    background: rgba(61, 214, 140, 0.1);
    border-radius: var(--radius-sm);
}

/* Summary Section */
.test-summary {
    border-left: 3px solid var(--primary-color);
}

.summary-stats {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-4);
}

.summary-stats .stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--background-color);
    border-radius: var(--radius-sm);
    min-width: 100px;
}

.summary-stats .stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

.summary-stats .stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-align: center;
}

.found-errors-list ul {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-2);
}

.found-errors-list li {
    padding: var(--spacing-1) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ==================== Test Info Banner (Normal Workflow) ==================== */

.test-info-banner {
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.15), rgba(249, 115, 22, 0.05));
    border: 1px solid rgba(249, 115, 22, 0.3);
    border-left: 4px solid var(--warning-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.test-info-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 700;
    font-size: var(--font-size-sm);
    color: var(--warning-color);
    margin-bottom: var(--spacing-3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.test-info-header i {
    font-size: var(--font-size-base);
}

.test-info-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3);
}

.test-info-details span {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
}

.test-info-details .test-correct {
    color: var(--success-color);
    font-weight: 600;
}

.test-info-details .test-incorrect {
    color: var(--error-color);
    font-weight: 600;
}

.test-expected-errors {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    padding-top: var(--spacing-2);
    border-top: 1px dashed rgba(249, 115, 22, 0.3);
}

.test-expected-errors .expected-error {
    display: block;
    padding: var(--spacing-1) 0;
    padding-left: var(--spacing-3);
    border-left: 2px solid var(--warning-color);
    margin-top: var(--spacing-1);
}

/* Auto-filled solution input visual feedback */
#solution-input.test-auto-filled {
    animation: test-auto-fill-pulse 1s ease-out;
    border-color: var(--warning-color);
}

@keyframes test-auto-fill-pulse {
    0% {
        background-color: rgba(249, 115, 22, 0.2);
        box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.3);
    }
    100% {
        background-color: transparent;
        box-shadow: none;
    }
}

/* Test Options - Difficulty Filter */
.test-options-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.test-option-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.test-option-group label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.test-option-group .select-input {
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    min-width: 140px;
}

.test-option-group .select-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Difficulty badges */
.difficulty-badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.difficulty-badge.easy {
    background: rgba(61, 214, 140, 0.2);
    color: var(--success-color);
}

.difficulty-badge.medium {
    background: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
}

.difficulty-badge.hard {
    background: rgba(249, 115, 22, 0.2);
    color: var(--warning-color);
}

.difficulty-badge.expert {
    background: rgba(230, 57, 70, 0.2);
    color: var(--error-color);
}

.difficulty-badge.olympiad {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.3), rgba(236, 72, 153, 0.3));
    color: #a855f7;
    border: 1px solid rgba(168, 85, 247, 0.4);
}

/* ==================== TASK GENERATION UI ==================== */

/* Topic Selection */
.topic-selection {
    margin-bottom: var(--spacing-4);
}

.topic-select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.topic-select-wrapper .dropdown-icon {
    position: absolute;
    right: var(--spacing-4);
    color: var(--text-secondary);
    pointer-events: none;
    transition: transform 0.2s ease, color 0.2s ease;
    font-size: var(--font-size-xs);
}

.topic-select-wrapper:hover .dropdown-icon {
    color: var(--primary-color);
}

/* ==================== TOPIC SEARCH (Fuzzy Search Combobox) ==================== */

.topic-search-wrapper {
    position: relative;
    width: 100%;
}

.topic-search-input {
    width: 100%;
    padding: var(--spacing-3) calc(var(--spacing-4) + 24px) var(--spacing-3) var(--spacing-4);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    transition: all 0.2s ease;
    cursor: pointer;
    min-height: 44px;
    line-height: 1.4;
}

.topic-search-input:hover {
    border-color: var(--primary-color);
    background: var(--background-color);
}

.topic-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    background: var(--background-color);
    cursor: text;
}

.topic-search-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}


.topic-search-wrapper .dropdown-icon {
    position: absolute;
    right: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
    font-size: var(--font-size-xs);
    transition: transform 0.2s ease, color 0.2s ease;
}

.topic-search-wrapper:hover .dropdown-icon {
    color: var(--primary-color);
}

.topic-search-wrapper.open .dropdown-icon,
.topic-search-wrapper.dropdown-open .dropdown-icon {
    transform: translateY(-50%) rotate(180deg);
    color: var(--primary-color);
}

.topic-clear-btn {
    position: absolute;
    right: calc(var(--spacing-4) + 20px);
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-1);
    border-radius: var(--radius-sm);
    transition: color 0.2s, background 0.2s, opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    opacity: 0;
    pointer-events: none;
}

.topic-search-wrapper.has-selection .topic-clear-btn {
    opacity: 1;
    pointer-events: auto;
}

.topic-clear-btn:hover {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

/* Extra padding für Clear-Button */
.topic-search-wrapper.has-selection .topic-search-input {
    padding-right: calc(var(--spacing-4) + 48px);
}

.topic-dropdown-list {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: 280px;
    overflow-y: auto;
    z-index: 9999;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 4px 12px rgba(0, 0, 0, 0.2);
    display: none;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
    transform: translateY(-4px);
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.topic-dropdown-list::-webkit-scrollbar {
    width: 6px;
}

.topic-dropdown-list::-webkit-scrollbar-track {
    background: transparent;
}

.topic-dropdown-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.topic-dropdown-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.topic-dropdown-list.visible {
    display: block;
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

.topic-dropdown-item {
    padding: var(--spacing-3) var(--spacing-4);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
    margin: 2px 4px;
    border-radius: var(--radius-sm);
}

.topic-dropdown-item:first-child {
    margin-top: 4px;
}

.topic-dropdown-item:last-child {
    margin-bottom: 4px;
}

.topic-dropdown-item:hover,
.topic-dropdown-item.highlighted {
    background: var(--background-color);
    border-left-color: var(--primary-color);
}

.topic-dropdown-item.selected {
    background: rgba(37, 99, 235, 0.1);
    border-left-color: var(--primary-color);
}

.topic-dropdown-item.selected .topic-dropdown-item-name {
    color: var(--primary-color);
    font-weight: 500;
}

.topic-dropdown-item i {
    color: var(--accent-color);
    width: 20px;
    text-align: center;
    font-size: var(--font-size-sm);
    opacity: 0.8;
    transition: opacity 0.15s ease;
}

.topic-dropdown-item:hover i,
.topic-dropdown-item.highlighted i {
    opacity: 1;
}

.topic-dropdown-item-name {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: 1.4;
}

.topic-dropdown-item-match {
    font-size: 10px;
    color: var(--text-secondary);
    background: var(--background-color);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    opacity: 0.7;
}

.topic-dropdown-empty {
    padding: var(--spacing-6) var(--spacing-4);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.topic-dropdown-empty i {
    display: block;
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-xl);
    opacity: 0.4;
}

/* Highlight matched text */
.topic-match-highlight {
    background: rgba(37, 99, 235, 0.15);
    color: var(--primary-color);
    padding: 1px 3px;
    border-radius: 3px;
    font-weight: 500;
}

/* ==================== CUSTOM DROPDOWN (für Aufgabentyp, Schwierigkeit, etc.) ==================== */

.custom-dropdown {
    position: relative;
    width: 100%;
}

.custom-dropdown-trigger {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    padding-right: calc(var(--spacing-4) + 24px);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 44px;
    line-height: 1.4;
    display: flex;
    align-items: center;
    text-align: left;
}

.custom-dropdown-trigger:hover {
    border-color: var(--primary-color);
    background: var(--background-color);
}

.custom-dropdown-trigger:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    background: var(--background-color);
}

.custom-dropdown-trigger .dropdown-trigger-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.custom-dropdown-trigger .dropdown-trigger-text.placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.custom-dropdown-trigger .dropdown-icon {
    position: absolute;
    right: var(--spacing-4);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    transition: transform 0.2s ease, color 0.2s ease;
}

.custom-dropdown:hover .dropdown-icon {
    color: var(--primary-color);
}

.custom-dropdown.open .dropdown-icon {
    transform: rotate(180deg);
    color: var(--primary-color);
}

.custom-dropdown-list {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: 280px;
    overflow-y: auto;
    z-index: 9999;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 4px 12px rgba(0, 0, 0, 0.2);
    display: none;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
    transform: translateY(-4px);
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.custom-dropdown-list::-webkit-scrollbar {
    width: 6px;
}

.custom-dropdown-list::-webkit-scrollbar-track {
    background: transparent;
}

.custom-dropdown-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.custom-dropdown-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

.custom-dropdown-list.visible {
    display: block;
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

.custom-dropdown-item {
    padding: var(--spacing-3) var(--spacing-4);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
    margin: 2px 4px;
    border-radius: var(--radius-sm);
}

.custom-dropdown-item:first-child {
    margin-top: 4px;
}

.custom-dropdown-item:last-child {
    margin-bottom: 4px;
}

.custom-dropdown-item:hover,
.custom-dropdown-item.highlighted {
    background: var(--background-color);
    border-left-color: var(--primary-color);
}

.custom-dropdown-item.selected {
    background: rgba(37, 99, 235, 0.1);
    border-left-color: var(--primary-color);
}

.custom-dropdown-item.selected .dropdown-item-text {
    color: var(--primary-color);
    font-weight: 500;
}

.custom-dropdown-item i {
    color: var(--accent-color);
    width: 20px;
    text-align: center;
    font-size: var(--font-size-sm);
    opacity: 0.8;
    transition: opacity 0.15s ease;
}

.custom-dropdown-item:hover i,
.custom-dropdown-item.highlighted i {
    opacity: 1;
}

.dropdown-item-text {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    font-weight: 500;
}

.dropdown-item-desc {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-left: auto;
    opacity: 0.8;
}

/* Responsive: Bei kleinen Bildschirmen Beschreibung ausblenden */
@media (max-width: 600px) {
    .dropdown-item-desc {
        display: none;
    }
}

/* Legacy native select styles (for backward compatibility) */
.topic-dropdown,
.subtopic-dropdown {
    width: 100%;
    padding: var(--spacing-3) calc(var(--spacing-4) + 24px) var(--spacing-3) var(--spacing-4);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    transition: all 0.2s ease;
    min-height: 44px;
    line-height: 1.4;
}

/* Subtopic Animation */
.subtopic-wrapper {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease-out, opacity 0.2s ease-out, margin 0.3s ease-out;
    margin-top: 0;
}

.subtopic-wrapper.visible {
    max-height: 500px;
    overflow: visible;
    opacity: 1;
    margin-top: var(--spacing-3);
}

/* Special Wishes Input */
.special-wishes {
    margin-bottom: var(--spacing-4);
}

.wishes-input {
    width: 100%;
    padding: var(--spacing-3);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.wishes-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(61, 214, 140, 0.15);
}

.wishes-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Task Type Buttons */
.task-type-selection,
.difficulty-selection {
    margin-bottom: var(--spacing-4);
}

/* Selection Preview */
.selection-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
}

.preview-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.selection-chips {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.chip i {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.chip.placeholder {
    color: var(--text-secondary);
    font-style: italic;
    border-style: dashed;
}

.chip-topic {
    border-color: var(--primary-color);
}

.chip-subtopic {
    border-color: var(--accent-color);
}

.chip-type {
    border-color: var(--warning-color);
}

.chip-difficulty {
    border-color: var(--accent-color);
}

/* Generation Buttons */
.generation-buttons {
    display: flex;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-color), #2eb67d);
    color: var(--background-color);
    font-weight: 600;
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(61, 214, 140, 0.3);
}

/* ==================== SOLUTION IMAGE UPLOAD ==================== */

.solution-image-section {
    margin: var(--spacing-4) 0;
    padding: var(--spacing-4);
    background: rgba(31, 39, 51, 0.3);
    border-radius: var(--radius-md);
    border: 1px dashed var(--border-color);
}

.solution-image-section label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.solution-upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-6);
    background: var(--surface-color);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.solution-upload-zone:hover {
    border-color: var(--primary-color);
    background: rgba(230, 57, 70, 0.05);
}

.solution-upload-zone.drag-over {
    border-color: var(--accent-color);
    background: rgba(61, 214, 140, 0.1);
}

.solution-upload-zone i {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
}

.solution-upload-zone p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.solution-upload-zone .upload-hint {
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-1);
    opacity: 0.7;
}

.solution-image-preview {
    display: none;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-top: var(--spacing-3);
}

.solution-image-item {
    position: relative;
    width: 100px;
    height: 100px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.solution-image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.solution-image-item .remove-solution-image {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
}

.solution-image-item:hover .remove-solution-image {
    opacity: 1;
}

.remove-solution-image:hover {
    background: var(--error-color);
}

/* ==================== FORM GROUP ICONS ==================== */

.form-group label i {
    margin-right: var(--spacing-1);
    color: var(--text-secondary);
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 768px) {
    .generation-buttons {
        flex-direction: column;
    }
}

/* ==================== 2-COLUMN LAYOUT MOBILE RESPONSIVE ==================== */

@media (max-width: 1024px) {
    .app-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: fixed;
        left: -100%;
        width: var(--sidebar-width);
        z-index: 200;
        transition: left 0.3s ease;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .mobile-header {
        display: flex;
    }
    
    .main-content {
        grid-column: 1;
        margin-left: 0;
        width: 100%;
        padding: var(--spacing-4);
        padding-top: calc(56px + var(--spacing-4));
        padding-bottom: calc(70px + var(--spacing-4));
    }
    
    .bottom-bar {
        left: 0;
        padding: var(--spacing-4);
    }
    
    .bottom-bar .btn {
        min-height: 44px;
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .sidebar-overlay {
        display: none;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
}

@media (max-width: 640px) {
    .bottom-bar {
        flex-wrap: wrap;
        gap: var(--spacing-2);
    }
    
    .bottom-bar .btn {
        flex: 1;
        min-width: calc(50% - var(--spacing-2));
        justify-content: center;
    }
    
    .bottom-bar .btn-group {
        flex: 1;
        width: 100%;
    }
    
    .bottom-bar .btn-group .btn {
        flex: 1;
    }
    
    .main-content {
        padding: var(--spacing-3);
        padding-top: calc(56px + var(--spacing-3));
        padding-bottom: calc(90px + var(--spacing-3));
    }
    
    .content-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    
    .content-tabs::-webkit-scrollbar {
        display: none;
    }
}

/* ==================== STRENGTH/WEAKNESS DASHBOARD ==================== */

/* Color Variables for Errors */
:root {
    --error-logic-color: #DC2626;
    --error-calc-color: #10B981;
    --error-followup-color: #F59E0B;
    --error-formal-color: #3B82F6;
}

/* Dashboard Container */
.strength-weakness-dashboard {
    margin-top: var(--spacing-6);
}

/* Loading State */
.sw-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    padding: var(--spacing-8);
    color: var(--text-secondary);
}

.sw-loading i {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
}

/* No Data State */
.sw-no-data {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    padding: var(--spacing-8);
    color: var(--text-secondary);
    background: var(--background-color);
    border-radius: var(--radius-md);
    text-align: center;
}

.sw-no-data i {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
}

/* Summary Stats */
.sw-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.sw-stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: var(--background-color);
    border-radius: var(--radius-lg);
    transition: transform 0.2s, box-shadow 0.2s;
}

.sw-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.sw-stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: white;
    font-size: var(--font-size-lg);
}

.sw-stat-info {
    display: flex;
    flex-direction: column;
}

.sw-stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.sw-stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Sections */
.sw-section {
    margin-bottom: var(--spacing-6);
}

.sw-section h5 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
    padding-bottom: var(--spacing-2);
    border-bottom: 1px solid var(--border-color);
}

.sw-section h5 i {
    color: var(--primary-color);
}

/* Competency List */
.sw-competency-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.sw-competency-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background: var(--background-color);
    border-radius: var(--radius-md);
    transition: background-color 0.2s;
}

.sw-competency-item:hover {
    background: var(--card-bg);
}

.sw-competency-name {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sw-rating-bar {
    flex: 0 0 100px;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.sw-rating-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.sw-strength .sw-rating-fill {
    background: linear-gradient(90deg, var(--success-color), #4ade80);
}

.sw-weakness .sw-rating-fill {
    background: linear-gradient(90deg, var(--error-color), #f87171);
}

.sw-rating-value {
    flex: 0 0 30px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-align: right;
}

.sw-trend-up {
    color: var(--success-color);
    font-size: var(--font-size-xs);
}

.sw-trend-down {
    color: var(--error-color);
    font-size: var(--font-size-xs);
}

.sw-empty {
    padding: var(--spacing-4);
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-style: italic;
}

/* Error Grid */
.sw-error-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-3);
}

.sw-error-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: var(--background-color);
    border-radius: var(--radius-md);
}

.sw-error-type {
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: white;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.sw-error-count {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

/* Suggestions */
.sw-suggestions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.sw-suggestion-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background: var(--background-color);
    border-radius: var(--radius-md);
}

.sw-suggestion-item i {
    flex-shrink: 0;
    margin-top: 2px;
}

.sw-suggestion-item span {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: 1.5;
}

/* Actions */
.sw-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
    .sw-summary {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sw-error-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sw-rating-bar {
        flex: 0 0 60px;
    }
}

@media (max-width: 480px) {
    .sw-summary {
        grid-template-columns: 1fr;
    }

    .sw-competency-item {
        flex-wrap: wrap;
    }

    .sw-competency-name {
        flex: 1 0 100%;
        margin-bottom: var(--spacing-2);
    }

    .sw-rating-bar {
        flex: 1;
    }
}

/* ==================== DETAILLIERTES FEHLERPROFIL ==================== */

.error-profile-section {
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

.error-timeline-container {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    height: 200px;
}

.error-categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.error-category-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-3);
    border: 1px solid var(--border-color);
    transition: border-color 0.2s ease;
}

.error-category-card:hover {
    border-color: var(--primary-color);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.category-icon {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
}

.category-icon.logic {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.category-icon.calc {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.category-icon.formal {
    background: rgba(59, 130, 246, 0.2);
    color: #3b82f6;
}

.category-icon.followup {
    background: rgba(249, 115, 22, 0.2);
    color: #f97316;
}

.category-name {
    flex: 1;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.category-count {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 24px;
    text-align: right;
}

.subcategories-list {
    margin-top: var(--spacing-2);
    padding-top: var(--spacing-2);
    border-top: 1px solid var(--border-color);
}

.subcategory-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) 0;
    font-size: 0.8rem;
}

.subcategory-name {
    flex: 1;
    color: var(--text-secondary);
}

.subcategory-count {
    font-weight: 500;
    color: var(--text-primary);
    min-width: 20px;
    text-align: right;
}

.subcategory-trend {
    font-size: 0.7rem;
    width: 16px;
    text-align: center;
}

.subcategory-trend.trend-good {
    color: #22c55e;
}

.subcategory-trend.trend-bad {
    color: #ef4444;
}

.subcategory-trend.trend-stable {
    color: var(--text-muted);
}

.no-errors {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Error Recommendations */
.error-recommendations {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-3);
}

.error-recommendations h6 {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.error-recommendations h6 i {
    color: var(--warning-color);
}

.recommendation-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    padding: var(--spacing-2);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-2);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.recommendation-item:last-child {
    margin-bottom: 0;
}

.recommendation-item i {
    margin-top: 2px;
    flex-shrink: 0;
}

.recommendation-item.high {
    border-left: 3px solid #ef4444;
}

.recommendation-item.high i {
    color: #ef4444;
}

.recommendation-item.medium {
    border-left: 3px solid #f97316;
}

.recommendation-item.medium i {
    color: #f97316;
}

.recommendation-item.success {
    border-left: 3px solid #22c55e;
}

.recommendation-item.success i {
    color: #22c55e;
}

.recommendation-item.info {
    border-left: 3px solid #3b82f6;
}

.recommendation-item.info i {
    color: #3b82f6;
}

.no-recommendations {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-2);
}

/* Error Profile V2 - 4 Charts Grid */
.error-profile-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.error-profile-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

.view-toggle {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 2px;
}

.toggle-btn {
    padding: var(--spacing-2) var(--spacing-3);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.toggle-btn:hover {
    color: var(--text-primary);
}

.toggle-btn.active {
    background: var(--primary-color);
    color: white;
}

.fluctuation-hint {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.fluctuation-hint i {
    color: #3b82f6;
    margin-top: 2px;
    flex-shrink: 0;
}

/* 4 Charts Grid */
.error-charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.error-chart-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-3);
    border: 1px solid var(--border-color);
}

.error-chart-card.total {
    border-left: 3px solid #8b5cf6;
}

.error-chart-card.logic {
    border-left: 3px solid #ef4444;
}

.error-chart-card.calc {
    border-left: 3px solid #22c55e;
}

.error-chart-card.formal {
    border-left: 3px solid #3b82f6;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-2);
}

.chart-title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.chart-title i {
    font-size: 0.8rem;
}

.error-chart-card.total .chart-title i { color: #8b5cf6; }
.error-chart-card.logic .chart-title i { color: #ef4444; }
.error-chart-card.calc .chart-title i { color: #22c55e; }
.error-chart-card.formal .chart-title i { color: #3b82f6; }

.chart-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-container {
    height: 130px;
    position: relative;
}

.no-data-message {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Summary Box */
.error-summary-box {
    display: flex;
    justify-content: space-around;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    border: 1px solid var(--border-color);
}

.summary-stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-1);
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Error Categories Detail */
.error-categories-detail {
    margin-bottom: var(--spacing-4);
}

.error-categories-detail h5 {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.error-categories-detail h5 i {
    color: var(--text-muted);
}

.error-categories-detail .error-categories-grid {
    grid-template-columns: repeat(3, 1fr);
}

/* Responsive Error Profile */
@media (max-width: 992px) {
    .error-charts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .error-categories-detail .error-categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .error-charts-grid {
        grid-template-columns: 1fr;
    }

    .error-categories-grid {
        grid-template-columns: 1fr;
    }

    .error-categories-detail .error-categories-grid {
        grid-template-columns: 1fr;
    }

    .error-profile-controls {
        flex-direction: column;
        align-items: flex-start;
    }

    .error-summary-box {
        flex-wrap: wrap;
        gap: var(--spacing-3);
    }

    .summary-stat {
        flex: 1 1 30%;
        min-width: 80px;
    }
}

/* ==================== THEORIE-AUFGABEN FEEDBACK (Optimiert) ==================== */

/* Header-Section mit Progress */
.theory-header-section {
    margin-bottom: var(--spacing-4);
}

.theory-progress-bar {
    margin-top: var(--spacing-3);
}

.progress-track {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    position: relative;
    overflow: hidden;
}

.progress-track .progress-fill {
    position: absolute;
    top: 0;
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.progress-track .progress-fill.correct {
    background: var(--success-color);
    left: 0;
}

.progress-track .progress-fill.partial {
    background: var(--warning-color);
}

.progress-labels {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-2);
    font-size: var(--font-size-xs);
}

.progress-labels span {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.label-correct { color: var(--success-color); }
.label-partial { color: var(--warning-color); }
.label-incorrect { color: var(--error-color); }

/* Accordion-Style Subtasks */
.theory-subtasks-accordion {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.theory-subtask-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.theory-subtask-item:hover {
    border-color: var(--primary-color);
}

.theory-subtask-item.subtask-correct {
    border-left: 4px solid var(--success-color);
}

.theory-subtask-item.subtask-partial {
    border-left: 4px solid var(--warning-color);
}

.theory-subtask-item.subtask-incorrect {
    border-left: 4px solid var(--error-color);
}

.theory-subtask-item.subtask-missing {
    border-left: 4px solid var(--text-muted);
}

/* Summary (klickbar) */
.subtask-details summary {
    cursor: pointer;
    list-style: none;
}

.subtask-details summary::-webkit-details-marker {
    display: none;
}

.subtask-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--bg-secondary);
    transition: background 0.2s ease;
}

.subtask-details[open] .subtask-summary {
    border-bottom: 1px solid var(--border-color);
}

.subtask-summary:hover {
    background: var(--bg-tertiary);
}

.summary-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.subtask-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
}

.subtask-icon.subtask-correct {
    background: rgba(61, 214, 140, 0.2);
    color: var(--success-color);
}

.subtask-icon.subtask-partial {
    background: rgba(255, 183, 77, 0.2);
    color: var(--warning-color);
}

.subtask-icon.subtask-incorrect {
    background: rgba(230, 57, 70, 0.2);
    color: var(--error-color);
}

.subtask-icon.subtask-missing {
    background: rgba(128, 128, 128, 0.2);
    color: var(--text-muted);
}

.subtask-label {
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.subtask-type-badge {
    font-size: var(--font-size-xs);
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.summary-right {
    color: var(--text-muted);
}

.expand-icon {
    transition: transform 0.2s ease;
}

.subtask-details[open] .expand-icon {
    transform: rotate(180deg);
}

/* Content (aufklappbar) */
.subtask-content {
    padding: var(--spacing-4);
    background: var(--bg-primary);
}

.subtask-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.subtask-main,
.subtask-feedback {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

/* Frage */
.subtask-question {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-3);
}

.question-label,
.answer-label,
.explanation-label,
.keypoints-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.question-text,
.answer-text,
.explanation-text {
    color: var(--text-primary);
    line-height: 1.6;
}

/* Antwort */
.subtask-answer {
    padding: var(--spacing-3);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.subtask-answer.subtask-correct {
    background: rgba(61, 214, 140, 0.05);
    border-color: rgba(61, 214, 140, 0.3);
}

.subtask-answer.subtask-partial {
    background: rgba(255, 183, 77, 0.05);
    border-color: rgba(255, 183, 77, 0.3);
}

.subtask-answer.subtask-incorrect {
    background: rgba(230, 57, 70, 0.05);
    border-color: rgba(230, 57, 70, 0.3);
}

.subtask-answer.subtask-missing {
    background: var(--bg-tertiary);
}

.answer-text.empty {
    color: var(--text-muted);
}

/* Erklärung/Feedback */
.subtask-explanation {
    padding: var(--spacing-3);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    border-left: 3px solid var(--primary-color);
}

.subtask-explanation.correct {
    border-left-color: var(--success-color);
    background: rgba(61, 214, 140, 0.05);
}

.subtask-explanation.correct .explanation-text {
    color: var(--success-color);
    font-weight: 500;
}

/* Schlüsselaspekte */
.subtask-keypoints {
    padding: var(--spacing-3);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.keypoints-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.keypoints-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.keypoints-list li i {
    margin-top: 2px;
}

.keypoints-list li.present {
    color: var(--success-color);
}

.keypoints-list li.missing {
    color: var(--error-color);
}

/* Musterlösung aufklappbar */
.correct-answer-reveal {
    margin-top: var(--spacing-3);
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-3);
}

.correct-answer-reveal summary {
    cursor: pointer;
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2);
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
}

.correct-answer-reveal summary:hover {
    background: var(--bg-tertiary);
}

.correct-answer-box {
    margin-top: var(--spacing-3);
    padding: var(--spacing-4);
    background: rgba(61, 214, 140, 0.1);
    border: 1px solid rgba(61, 214, 140, 0.3);
    border-radius: var(--radius-sm);
    line-height: 1.6;
}

/* Fehlende Antworten Box */
.theory-missing-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background: rgba(255, 183, 77, 0.1);
    border: 1px solid rgba(255, 183, 77, 0.3);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    color: var(--warning-color);
    font-size: var(--font-size-sm);
}

/* Feedback-Zusammenfassung */
.theory-feedback-summary {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin-top: var(--spacing-4);
}

.feedback-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.feedback-item {
    display: flex;
    gap: var(--spacing-3);
    align-items: flex-start;
}

.feedback-item i {
    color: var(--primary-color);
    margin-top: 2px;
}

.feedback-item.suggestion i {
    color: var(--warning-color);
}

.feedback-item span {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ==================== ANTWORTSATZ FEEDBACK ==================== */

.answer-sentence-feedback {
    margin: var(--spacing-4) 0;
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
}

.answer-sentence-feedback.success-box {
    background: rgba(61, 214, 140, 0.1);
    border: 1px solid rgba(61, 214, 140, 0.3);
}

.answer-sentence-feedback.warning-box {
    background: rgba(255, 183, 77, 0.1);
    border: 1px solid rgba(255, 183, 77, 0.3);
}

.answer-sentence-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-base);
}

.answer-sentence-feedback.success-box .answer-sentence-header {
    color: var(--success-color);
}

.answer-sentence-feedback.warning-box .answer-sentence-header {
    color: var(--warning-color);
}

.answer-sentence-feedback p {
    margin: 0 0 var(--spacing-3) 0;
    color: var(--text-primary);
}

.student-sentence,
.suggested-sentence {
    margin: var(--spacing-2) 0;
    padding: var(--spacing-3);
    background: var(--bg-tertiary);
    border-left: 3px solid var(--border-color);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.suggested-sentence {
    border-left-color: var(--success-color);
    background: rgba(61, 214, 140, 0.05);
}

.suggestion-details {
    margin-top: var(--spacing-3);
}

.suggestion-details summary {
    cursor: pointer;
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    padding: var(--spacing-2);
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
}

.suggestion-details summary:hover {
    background: var(--bg-tertiary);
}

.suggestion-details summary i {
    margin-right: var(--spacing-2);
}

/* Warning Status für Feedback */
.feedback-status.warning {
    background: rgba(255, 183, 77, 0.15);
    border: 1px solid rgba(255, 183, 77, 0.4);
    color: var(--warning-color);
}

/* ==================== RESPONSIVE FÜR THEORIE/ANTWORTSATZ ==================== */

@media (max-width: 768px) {
    .subtask-grid {
        grid-template-columns: 1fr;
    }
    
    .progress-labels {
        flex-wrap: wrap;
        gap: var(--spacing-2);
    }
    
    .subtask-summary {
        padding: var(--spacing-2) var(--spacing-3);
    }
    
    .summary-left {
        gap: var(--spacing-2);
    }
    
    .subtask-label {
        font-size: var(--font-size-sm);
    }
    
    .subtask-type-badge {
        display: none;
    }
    
    .subtask-content {
        padding: var(--spacing-3);
    }
    
    .answer-sentence-feedback {
        padding: var(--spacing-3);
    }
}

/* ==================== ZUSÄTZLICHE MOBILE FIXES ==================== */

/* Globale Overflow-Fixes für alle Bildschirmgrößen */
.main-content,
.content-area,
.task-display,
.response-area,
.feedback-container {
    max-width: 100%;
    overflow-x: hidden;
}

/* MathJax Global Fixes */
mjx-container {
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
}

/* Lange Textblöcke umbrechen */
.task-description,
.response-content p,
.feedback-text,
.hint-content,
.explanation-text {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

/* Mobile-spezifische Verbesserungen */
@media (max-width: 768px) {
    /* Alle MathJax-Container scrollbar machen */
    mjx-container,
    .MathJax,
    .MathJax_Display,
    .latex-display {
        max-width: 100%;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        display: block;
    }

    /* Formeln in Karten */
    .task-card mjx-container,
    .solution-step mjx-container,
    .tutor-step mjx-container {
        font-size: 0.9em;
    }

    /* Text-Container */
    .response-content,
    .task-text,
    .feedback-content {
        word-break: break-word;
        overflow-wrap: break-word;
    }

    /* Buttons und Badges nicht umbrechen */
    .btn,
    .badge,
    .tag {
        white-space: nowrap;
        flex-shrink: 0;
    }

    /* Flexbox-Kinder mit min-width: 0 für korrekten Overflow */
    .tutor-step-content,
    .solution-step-content,
    .feedback-item-content {
        min-width: 0;
    }

    /* Code-Blöcke scrollbar */
    pre,
    code {
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Tabellen responsive */
    table {
        display: block;
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Modal auf Mobilgeräten */
    .modal-content {
        width: 95vw;
        max-width: 95vw;
        max-height: 90vh;
        overflow-y: auto;
    }

    /* Header kompakter */
    .header .logo h1 {
        font-size: var(--font-size-lg);
    }

    /* Cards mit weniger Padding */
    .card,
    .task-card,
    .feedback-card {
        padding: var(--spacing-3);
    }

    /* Lange Labels/Titel umbrechen */
    .section-title,
    .card-title,
    .task-title {
        word-break: break-word;
        hyphens: auto;
    }
}

/* Extra kleine Bildschirme (< 480px) */
@media (max-width: 480px) {
    /* Noch kompaktere Spacing */
    .main-content {
        padding: var(--spacing-2);
        padding-top: calc(56px + var(--spacing-2));
        padding-bottom: calc(90px + var(--spacing-2));
    }

    /* Formeln noch kleiner */
    mjx-container,
    .MathJax {
        font-size: 0.85em;
    }

    .task-card .latex-display {
        font-size: 1.2em;
        padding: var(--spacing-3);
    }

    /* Tutor-Steps vertikal stapeln */
    .tutor-step {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }

    .tutor-step-number {
        margin-bottom: var(--spacing-1);
    }

    /* Input-Bereiche volle Breite */
    .input-area,
    .followup-input-area {
        padding: var(--spacing-2);
    }

    .followup-input-area textarea {
        min-height: 80px;
    }

    /* Buttons in voller Breite */
    .btn-primary,
    .btn-submit {
        width: 100%;
        justify-content: center;
    }

    /* Stats-Karten */
    .sw-stat-card {
        padding: var(--spacing-3);
    }

    .sw-stat-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }

    /* Abitur Mode Toggle Mobile */
    .abitur-mode-toggle {
        padding: var(--spacing-3);
    }

    .toggle-switch {
        width: 48px;
        height: 24px;
    }

    .toggle-slider::before {
        width: 18px;
        height: 18px;
    }

    input:checked + .toggle-slider::before {
        transform: translateX(24px);
    }

    .toggle-label {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }

    .toggle-description {
        font-size: var(--font-size-sm);
        padding-left: 0;
    }
}

/* ==================== ABITUR MODE STYLING ==================== */

/* Abitur Mode Toggle Container */
.abitur-mode-toggle {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.05) 0%, rgba(30, 58, 138, 0.02) 100%);
    border: 1px solid rgba(30, 58, 138, 0.15);
    border-radius: var(--radius-2);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    transition: all 0.3s ease;
}

.abitur-mode-toggle.active {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.12) 0%, rgba(30, 58, 138, 0.06) 100%);
    border-color: #1E3A8A;
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.toggle-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    cursor: pointer;
    user-select: none;
}

.toggle-text {
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.toggle-text i {
    color: #1E3A8A;
}

.toggle-switch {
    position: relative;
    width: 56px;
    height: 28px;
    background-color: var(--surface-secondary);
    border-radius: 14px;
    transition: background-color 0.3s ease;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #CBD5E1;
    border-radius: 14px;
    transition: 0.3s;
}

.toggle-slider::before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: 0.3s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

input:checked + .toggle-slider {
    background-color: #1E3A8A;
}

input:checked + .toggle-slider::before {
    transform: translateX(28px);
}

.toggle-description {
    margin-top: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    padding-left: var(--spacing-2);
}

/* Abitur Topic Selection */
.abitur-topic-selection {
    display: none;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.03) 0%, rgba(30, 58, 138, 0.01) 100%);
    border: 1px solid rgba(30, 58, 138, 0.1);
    border-radius: var(--radius-2);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

/* Abitur Active State */
.task-generation-form.abitur-active {
    position: relative;
}

.task-generation-form.abitur-active::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1E3A8A 0%, #3B82F6 100%);
    border-radius: var(--radius-2) var(--radius-2) 0 0;
}

.task-generation-form.abitur-active .topic-selection {
    display: none !important;
}

.task-generation-form.abitur-active .abitur-topic-selection {
    display: block !important;
}

/* Hide task type and difficulty in Abitur mode */
.task-generation-form.abitur-active .task-type-selection,
.task-generation-form.abitur-active .difficulty-selection {
    display: none !important;
}

/* Abitur Chip Styling */
.chip-abitur-topic {
    background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 100%);
    color: white;
    border: none;
}

.chip-abitur-part {
    background: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    color: white;
    border: none;
}

.chip-abitur-topic i,
.chip-abitur-part i {
    color: rgba(255, 255, 255, 0.9);
}

/* ==================== MATH KEYBOARD PANEL ==================== */

.math-keyboard {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.12);
    padding: var(--spacing-2) var(--spacing-3);
    transform: translateY(100%);
    transition: transform 0.25s ease;
    max-width: 680px;
    margin: 0 auto;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.math-keyboard.visible {
    transform: translateY(0);
}

/* Tabs */
.mk-tabs {
    display: flex;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-2);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-2);
}

.mk-tab {
    flex: 1;
    padding: var(--spacing-2) var(--spacing-3);
    border: none;
    background: transparent;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.15s ease;
    font-family: var(--font-family);
}

.mk-tab:hover {
    background: var(--background-color);
    color: var(--text-primary);
}

.mk-tab.active {
    background: var(--primary-color);
    color: white;
}

/* Button rows */
.mk-row {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-1);
}

.mk-btn {
    padding: var(--spacing-2) var(--spacing-1);
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    cursor: pointer;
    transition: all 0.1s ease;
    color: var(--text-primary);
    min-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
}

.mk-btn:hover {
    background: var(--background-color);
    border-color: var(--primary-light);
}

.mk-btn:active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(0.95);
}

/* Action row */
.mk-action-row {
    display: flex;
    gap: var(--spacing-1);
    margin-top: var(--spacing-2);
    padding-top: var(--spacing-2);
    border-top: 1px solid var(--border-color);
}

.mk-action-btn {
    flex: 1;
}

.mk-enter {
    flex: 2;
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

.mk-enter:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.mk-enter:active {
    transform: scale(0.97);
}

/* Add bottom padding to main content when keyboard is visible */
.math-keyboard.visible ~ .app-layout .main-content,
body:has(.math-keyboard.visible) .main-content {
    padding-bottom: 320px;
}

/* ==================== MATH KEYBOARD MOBILE ==================== */

@media (max-width: 768px) {
    .math-keyboard {
        max-width: 100%;
        border-radius: 0;
        padding: var(--spacing-1) var(--spacing-2);
    }

    .mk-row {
        gap: 2px;
        margin-bottom: 2px;
    }

    .mk-btn {
        padding: var(--spacing-1) 2px;
        font-size: var(--font-size-xs);
        min-height: 36px;
    }

    .mk-tab {
        padding: var(--spacing-1) var(--spacing-2);
        font-size: var(--font-size-xs);
    }

    .mk-action-row {
        gap: 2px;
    }
}

/* ==================== GLOSSARY STYLES ==================== */

.glossary-search {
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}

.glossary-search input {
    flex: 1;
}

.glossary-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.glossary-chip {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.glossary-chip:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.glossary-result {
    margin-top: var(--spacing-3);
}

.glossary-answer {
    background: var(--background-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    border-left: 4px solid var(--primary-color);
}

.glossary-answer h4 {
    margin-bottom: var(--spacing-3);
    color: var(--primary-color);
}

.glossary-answer h4 i {
    margin-right: var(--spacing-2);
}

.glossary-content {
    line-height: 1.6;
    color: var(--text-primary);
}

.glossary-content p {
    margin-bottom: var(--spacing-2);
}

.glossary-loading, .glossary-error {
    text-align: center;
    padding: var(--spacing-4);
    color: var(--text-secondary);
}

.glossary-error {
    color: var(--error-color);
}

/* ==================== PORTFOLIO STYLES ==================== */

.portfolio-summary {
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--background-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.portfolio-summary strong {
    color: var(--text-primary);
}

.portfolio-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    max-height: 400px;
    overflow-y: auto;
}

.portfolio-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--background-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
}

.portfolio-date {
    color: var(--text-secondary);
    min-width: 45px;
    font-size: var(--font-size-xs);
}

.portfolio-badge {
    background: var(--primary-color);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    white-space: nowrap;
}

.portfolio-diff {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    flex: 1;
}

.portfolio-hints {
    color: var(--warning-color);
    font-size: var(--font-size-xs);
    margin-left: var(--spacing-1);
}

.portfolio-hints i {
    margin-right: 2px;
}

.portfolio-empty {
    text-align: center;
    padding: var(--spacing-6);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.portfolio-empty i {
    margin-right: var(--spacing-2);
}

/* ==================== GRUPPEN/KLASSEN ==================== */

/* Toolbar */
.groups-toolbar {
    display: flex;
    gap: var(--spacing-3);
    align-items: center;
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
}

.join-group-form {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
}

.join-group-form input {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    width: 200px;
}

/* Gruppen-Grid */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-4);
}

.groups-loading, .groups-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-8);
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
}

.groups-loading i, .groups-empty i {
    font-size: 2rem;
    opacity: 0.5;
}

/* Gruppen-Karten */
.group-card {
    background: var(--card-bg, white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.group-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.group-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.group-card-header h4 {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
}

.group-type-badge {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full, 9999px);
    font-weight: 500;
}

.group-type-badge.klasse {
    background: #E0E7FF;
    color: #3730A3;
}

.group-type-badge.lerngruppe {
    background: #D1FAE5;
    color: #065F46;
}

.group-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.group-card-stats {
    display: flex;
    gap: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.group-card-stats i {
    margin-right: 4px;
}

.group-card-footer {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-2);
}

.role-badge {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full, 9999px);
    font-weight: 500;
}

.role-badge.teacher {
    background: #FEF3C7;
    color: #92400E;
}

.role-badge.student {
    background: #E0E7FF;
    color: #3730A3;
}

.creator-badge {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full, 9999px);
    background: #F3E8FF;
    color: #6B21A8;
    font-weight: 500;
    margin-left: var(--spacing-1);
}

/* Gruppen-Detail */
.group-detail-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
}

.group-detail-title {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.group-detail-title h3 {
    margin: 0;
}

.group-detail-actions {
    display: flex;
    gap: var(--spacing-2);
}

.group-invite-box {
    background: var(--bg-secondary, #F8FAFC);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-3);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.invite-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
}

.group-invite-box code {
    background: white;
    padding: 4px 12px;
    border-radius: var(--radius-md);
    font-family: monospace;
    font-size: var(--font-size-sm);
    letter-spacing: 1px;
    border: 1px solid var(--border-color);
    user-select: all;
}

/* Gruppen Sub-Tabs */
.group-detail-tabs {
    display: flex;
    gap: var(--spacing-1);
    margin-bottom: var(--spacing-4);
    border-bottom: 2px solid var(--border-color);
}

.group-tab-btn {
    padding: var(--spacing-2) var(--spacing-4);
    border: none;
    background: none;
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s ease;
}

.group-tab-btn:hover {
    color: var(--primary-color);
}

.group-tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.group-tab-btn i {
    margin-right: 4px;
}

/* Mitglieder-Liste */
.member-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    border-bottom: 1px solid var(--border-color);
}

.member-item:last-child {
    border-bottom: none;
}

.member-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.member-name {
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.member-email {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.member-role {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.member-actions {
    display: flex;
    gap: var(--spacing-1);
}

.member-actions .btn-sm {
    padding: 4px 8px;
    font-size: var(--font-size-xs);
}

/* Aufgaben-Liste */
.task-item {
    background: var(--card-bg, white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.task-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-2);
}

.task-item-header h5 {
    margin: 0;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.task-due {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    white-space: nowrap;
}

.task-item-meta {
    display: flex;
    gap: var(--spacing-3);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
}

.task-item-meta i {
    margin-right: 2px;
}

.task-stats {
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.task-stat {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full, 9999px);
}

.task-stat.completed {
    background: #D1FAE5;
    color: #065F46;
}

.task-stat.in-progress {
    background: #FEF3C7;
    color: #92400E;
}

.task-item-actions {
    display: flex;
    gap: var(--spacing-2);
    justify-content: flex-end;
}

/* Lehrer-Dashboard */
.group-task-dashboard {
    margin-top: var(--spacing-4);
}

.dashboard-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.dashboard-header h4 {
    margin: 0;
}

.dashboard-stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.dashboard-stat {
    text-align: center;
    padding: var(--spacing-3);
    background: var(--bg-secondary, #F8FAFC);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.dashboard-stat .stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
}

.dashboard-stat .stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: 2px;
}

.dashboard-stat.completed { border-color: var(--success-color); }
.dashboard-stat.in-progress { border-color: #F59E0B; }
.dashboard-stat.not-started { border-color: var(--border-color); }

.dashboard-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.dashboard-table th,
.dashboard-table td {
    padding: var(--spacing-2) var(--spacing-3);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.dashboard-table th {
    background: var(--bg-secondary, #F8FAFC);
    font-weight: 600;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.dashboard-table tr:hover {
    background: var(--bg-secondary, #F8FAFC);
}

.text-success { color: var(--success-color); }
.text-warning { color: #F59E0B; }
.text-muted { color: var(--text-secondary); opacity: 0.6; }

/* Schüler-Statistik */
.student-stats-view {
    margin-top: var(--spacing-4);
}

.stats-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.stats-header h4 {
    margin: 0;
}

.student-stats-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.stats-card {
    text-align: center;
    padding: var(--spacing-4);
    background: var(--bg-secondary, #F8FAFC);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.stats-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stats-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: 4px;
}

.student-error-breakdown {
    margin-bottom: var(--spacing-4);
}

.student-error-breakdown h5,
.student-group-tasks h5 {
    margin: 0 0 var(--spacing-3);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.error-bars {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.error-bar-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.error-bar-label {
    width: 70px;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.error-bar {
    flex: 1;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.error-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.error-bar-fill.logic { background: var(--error-logic, #DC2626); }
.error-bar-fill.calc { background: var(--error-calc, #10B981); }
.error-bar-fill.formal { background: var(--error-formal, #3B82F6); }

.error-bar-count {
    width: 30px;
    text-align: right;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-4);
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.modal-content.modal-lg {
    max-width: 650px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    font-size: var(--font-size-base);
}

.modal-close {
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-secondary);
    padding: 4px;
}

.modal-close:hover {
    color: var(--error-color);
}

.modal-body {
    padding: var(--spacing-4);
}

.modal-body .form-group {
    margin-bottom: var(--spacing-3);
}

.modal-body label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: 4px;
}

.modal-body input,
.modal-body select,
.modal-body textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: inherit;
}

.modal-body textarea {
    resize: vertical;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

/* Task Config Form */
.task-config-form {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-3);
    margin-top: var(--spacing-3);
}

.task-config-form h4 {
    font-size: var(--font-size-sm);
    margin: 0 0 var(--spacing-3);
}

/* Btn Small & Danger */
.btn-sm {
    padding: 4px 10px;
    font-size: var(--font-size-xs);
}

.btn-danger {
    background: var(--error-color, #EF4444);
    color: white;
    border: none;
}

.btn-danger:hover {
    background: #DC2626;
}

/* Teacher Toggle */
.teacher-toggle-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    .groups-grid {
        grid-template-columns: 1fr;
    }

    .groups-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .join-group-form {
        width: 100%;
    }

    .join-group-form input {
        flex: 1;
        width: auto;
    }

    .group-detail-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .dashboard-stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .student-stats-summary {
        grid-template-columns: 1fr;
    }

    .dashboard-table {
        font-size: var(--font-size-xs);
    }

    .dashboard-table th,
    .dashboard-table td {
        padding: var(--spacing-1) var(--spacing-2);
    }
}

/* ==================== FEEDBACK SECTION ==================== */

/* Dashboard Feedback Hint */
.feedback-hint-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 1px solid #bae6fd;
    border-radius: var(--radius-lg);
    padding: var(--spacing-4) var(--spacing-5);
    margin-top: var(--spacing-4);
    position: relative;
}

.feedback-hint-dismiss {
    position: absolute;
    top: var(--spacing-2);
    right: var(--spacing-2);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
    line-height: 1;
}

.feedback-hint-dismiss:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.feedback-hint-card > i {
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.feedback-hint-card > div {
    flex: 1;
    min-width: 0;
}

.feedback-hint-card strong {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    margin-bottom: 2px;
}

.feedback-hint-card span {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.feedback-hint-link {
    flex-shrink: 0;
    font-size: var(--font-size-sm);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    white-space: nowrap;
}

.feedback-hint-link:hover {
    text-decoration: underline;
}

/* Continue Section - Dashboard */
.continue-section {
    grid-column: 1 / -1;
    padding: var(--spacing-5);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.continue-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.continue-header i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.continue-header h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.continue-cards {
    display: flex;
    gap: var(--spacing-3);
    overflow-x: auto;
    padding-bottom: var(--spacing-2);
}

.continue-card {
    flex: 0 0 auto;
    min-width: 200px;
    max-width: 280px;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.2s ease;
}

.continue-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.continue-card .continue-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-1);
}

.continue-card .continue-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
}

/* Feedback Form */
.feedback-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.feedback-textarea-wrap {
    position: relative;
}

.feedback-textarea-wrap textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    resize: vertical;
    min-height: 120px;
    transition: border-color 0.2s;
}

.feedback-textarea-wrap textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.feedback-char-count {
    position: absolute;
    bottom: var(--spacing-2);
    right: var(--spacing-3);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Feedback Upload Zone */
.feedback-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    overflow: hidden;
}

.feedback-upload-zone:hover,
.feedback-upload-zone.dragover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.03);
}

.feedback-upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-6);
    color: var(--text-secondary);
}

.feedback-upload-placeholder i {
    font-size: 2rem;
    color: var(--primary-light);
}

.feedback-upload-placeholder small {
    font-size: var(--font-size-xs);
}

.feedback-upload-preview {
    position: relative;
    padding: var(--spacing-3);
}

.feedback-upload-preview img {
    max-width: 100%;
    max-height: 200px;
    border-radius: var(--radius-sm);
    display: block;
    margin: 0 auto;
}

.feedback-remove-image {
    position: absolute;
    top: var(--spacing-2);
    right: var(--spacing-2);
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: var(--font-size-sm);
}

.feedback-remove-image:hover {
    background: var(--error-color);
}

/* Feedback Success */
.feedback-success {
    text-align: center;
    padding: var(--spacing-8) var(--spacing-4);
}

.feedback-success i {
    font-size: 3rem;
    color: var(--success-color);
    margin-bottom: var(--spacing-4);
}

.feedback-success p {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    margin-bottom: var(--spacing-6);
}

/* Feedback Admin Area */
.feedback-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-8) 0 var(--spacing-6);
}

.feedback-admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.feedback-admin-header h4 {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.feedback-filter-group {
    display: flex;
    gap: var(--spacing-1);
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 2px;
}

.feedback-filter {
    padding: var(--spacing-1) var(--spacing-3);
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: all 0.2s;
}

.feedback-filter:hover {
    color: var(--text-primary);
}

.feedback-filter.active {
    background: var(--surface-color);
    color: var(--primary-color);
    font-weight: 500;
    box-shadow: var(--shadow);
}

/* Feedback List */
.feedback-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.feedback-loading {
    text-align: center;
    padding: var(--spacing-6);
    color: var(--text-secondary);
}

.feedback-loading i {
    margin-right: var(--spacing-2);
}

.feedback-empty {
    text-align: center;
    padding: var(--spacing-8);
    color: var(--text-secondary);
}

.feedback-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    transition: box-shadow 0.2s;
}

.feedback-card:hover {
    box-shadow: var(--shadow);
}

.feedback-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-3);
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.feedback-card-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.feedback-card-user strong {
    font-size: var(--font-size-sm);
}

.feedback-card-user small {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
}

.feedback-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.feedback-card-date {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Status Badges */
.feedback-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px var(--spacing-2);
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s;
}

.feedback-status:hover {
    opacity: 0.8;
}

.feedback-status[data-status="new"] {
    background: #dbeafe;
    color: #1d4ed8;
}

.feedback-status[data-status="read"] {
    background: #fef3c7;
    color: #92400e;
}

.feedback-status[data-status="resolved"] {
    background: #d1fae5;
    color: #065f46;
}

/* Delete button */
.feedback-delete-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    transition: all 0.2s;
}

.feedback-delete-btn:hover {
    color: #dc2626;
    background: #fef2f2;
}

/* Priority badge */
.feedback-priority {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px var(--spacing-2);
    border-radius: 999px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s;
}

.feedback-priority:hover {
    opacity: 0.8;
}

.feedback-priority[data-priority="normal"] {
    background: #f3f4f6;
    color: #6b7280;
}

.feedback-priority[data-priority="important"] {
    background: #fef3c7;
    color: #92400e;
}

.feedback-priority[data-priority="critical"] {
    background: #fee2e2;
    color: #dc2626;
}

/* Admin note */
.feedback-admin-note {
    margin-top: var(--spacing-3);
    padding-top: var(--spacing-3);
    border-top: 1px dashed var(--border-color);
}

.feedback-admin-note-input {
    width: 100%;
    min-height: 40px;
    padding: var(--spacing-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-family: inherit;
    background: var(--bg-secondary);
    color: var(--text-primary);
    resize: vertical;
    transition: border-color 0.2s;
}

.feedback-admin-note-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.feedback-admin-note-input::placeholder {
    color: var(--text-secondary);
}

.feedback-card-body {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.feedback-card-image {
    margin-top: var(--spacing-3);
}

.feedback-card-image img {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.feedback-card-image img:hover {
    opacity: 0.9;
}

/* Status Dropdown */
.feedback-status-select {
    padding: 2px var(--spacing-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    background: var(--surface-color);
    cursor: pointer;
}

@media (max-width: 768px) {
    .feedback-hint-card {
        flex-direction: column;
        text-align: center;
    }

    .feedback-admin-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .feedback-card-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ==================== Worksheet UI ==================== */

#worksheet-btn {
    background: var(--btn-secondary);
    color: white;
    gap: var(--spacing-1);
}

#worksheet-btn:hover {
    filter: brightness(1.1);
}

.worksheet-modal {
    max-width: 600px;
}

.worksheet-modal .modal-footer {
    justify-content: space-between;
}

.worksheet-type-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2) var(--spacing-4);
    margin-top: var(--spacing-1);
}

.ws-cb-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-sm);
    cursor: pointer;
    white-space: nowrap;
    user-select: none;
}

.ws-cb-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    flex-shrink: 0;
    cursor: pointer;
}

.worksheet-preview-modal-content {
    max-width: 900px;
    width: 95vw;
    max-height: 95vh;
}

.worksheet-preview-actions {
    display: flex;
    gap: var(--spacing-2);
    margin-left: auto;
    margin-right: var(--spacing-2);
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
}
}