/* CSS Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light mode */
    --bg-primary: #f0f4f8;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --accent: #4f46e5;
    --accent-rgb: 79, 70, 229;
    --accent-hover: #4338ca;
    --accent-secondary: #8b5cf6;
    --accent-glow: rgba(99, 102, 241, 0.25);
    --success: #10b981;
    --success-rgb: 16, 185, 129;
    --success-glow: rgba(16, 185, 129, 0.25);
    --warning: #f59e0b;
    --warning-rgb: 245, 158, 11;
    --warning-glow: rgba(245, 158, 11, 0.25);
    --danger: #ef4444;
    --danger-rgb: 239, 68, 68;
    --danger-glow: rgba(239, 68, 68, 0.25);
    --text-tertiary: #718096;
    --border: rgba(0, 0, 0, 0.1);

    /* Subject colors (G36 cross-curricular) */
    --color-science: #2e7d32;
    --color-science-rgb: 46, 125, 50;
    --color-social-studies: #1565c0;
    --color-social-studies-rgb: 21, 101, 192;

    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* Legacy aliases — --card-bg and --surface were used in many JS-rendered
       and inline styles but never declared globally, so they fell through to
       transparent or hardcoded #fff fallbacks that looked wrong in dark mode.
       Alias them to --bg-primary so the cascade works correctly in every theme. */
    --card-bg: var(--bg-primary);
    --surface: var(--bg-primary);
}

body.dark-mode {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #6366f1;
    --accent-rgb: 99, 102, 241;
    --accent-hover: #818cf8;
    --accent-secondary: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.4);
    --success-glow: rgba(16, 185, 129, 0.4);
    --warning-glow: rgba(245, 158, 11, 0.4);
    --danger-glow: rgba(239, 68, 68, 0.4);
    --text-tertiary: #64748b;
    --border: rgba(255, 255, 255, 0.1);

    /* Subject colors (brighter in dark mode for readability) */
    --color-science: #4caf50;
    --color-science-rgb: 76, 175, 80;
    --color-social-studies: #42a5f5;
    --color-social-studies-rgb: 66, 165, 245;

    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* ═══════════════════════════════════════════════════════════════════════════
   COLOR MODES - Fun student themes
   Philosophy: "Stimulating Frame, Calm Core"
   Colorful headers/sidebars/progress bars, neutral writing areas
   ═══════════════════════════════════════════════════════════════════════════ */

/* Arcade Scholar: Charcoal bg, neon cyan→blue panels, purple secondary, lime success */
body.dark-mode.color-arcade {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #e8e8e8;
    --text-secondary: #a0aec0;
    --accent: #00d4ff;
    --accent-rgb: 0, 212, 255;
    --accent-hover: #00b8e6;
    --accent-secondary: #a855f7;
    --accent-glow: rgba(0, 212, 255, 0.35);
    --success: #39ff14;
    --success-rgb: 57, 255, 20;
    --success-glow: rgba(57, 255, 20, 0.3);
    --warning: #ffd700;
    --warning-rgb: 255, 215, 0;
    --warning-glow: rgba(255, 215, 0, 0.3);
    --danger: #ff3860;
    --danger-rgb: 255, 56, 96;
    --danger-glow: rgba(255, 56, 96, 0.3);
    --border: rgba(0, 212, 255, 0.15);

    --glass-bg: rgba(22, 33, 62, 0.8);
    --glass-border: rgba(0, 212, 255, 0.12);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);

    /* Color mode extras */
    --cm-secondary: #a855f7;
    --cm-header-gradient: linear-gradient(135deg, #0f3460, #1a1a2e);
    --cm-glow-color: rgba(0, 212, 255, 0.15);
    --cm-progress-gradient: linear-gradient(90deg, #00d4ff, #6366f1);
    --cm-success-burst: #39ff14;
}

/* Slime Lab: Deep green-black bg, lime→teal panels, hot pink accents, neon green success */
body.dark-mode.color-slime {
    --bg-primary: #0a1a0a;
    --bg-secondary: #0d2818;
    --bg-tertiary: #1a3a2a;
    --text-primary: #e0f0e0;
    --text-secondary: #8fbc8f;
    --accent: #39ff14;
    --accent-rgb: 57, 255, 20;
    --accent-hover: #32e012;
    --accent-secondary: #ff1493;
    --accent-glow: rgba(57, 255, 20, 0.3);
    --success: #00ff88;
    --success-rgb: 0, 255, 136;
    --success-glow: rgba(0, 255, 136, 0.3);
    --warning: #ffb700;
    --warning-rgb: 255, 183, 0;
    --warning-glow: rgba(255, 183, 0, 0.3);
    --danger: #ff1493;
    --danger-rgb: 255, 20, 147;
    --danger-glow: rgba(255, 20, 147, 0.3);
    --border: rgba(57, 255, 20, 0.12);

    --glass-bg: rgba(13, 40, 24, 0.8);
    --glass-border: rgba(57, 255, 20, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);

    --cm-secondary: #ff1493;
    --cm-header-gradient: linear-gradient(135deg, #1a3a2a, #0a1a0a);
    --cm-glow-color: rgba(57, 255, 20, 0.12);
    --cm-progress-gradient: linear-gradient(90deg, #39ff14, #00d4aa);
    --cm-success-burst: #00ff88;
}

/* Cyber Notebook: Near-black bg, magenta→violet panels, electric blue accents, cyan success */
body.dark-mode.color-cyber {
    --bg-primary: #0d0d1a;
    --bg-secondary: #1a0d2e;
    --bg-tertiary: #2d1b4e;
    --text-primary: #e8e0f0;
    --text-secondary: #a78bba;
    --accent: #ff00ff;
    --accent-rgb: 255, 0, 255;
    --accent-hover: #e600e6;
    --accent-secondary: #1e90ff;
    --accent-glow: rgba(255, 0, 255, 0.3);
    --success: #00ffff;
    --success-rgb: 0, 255, 255;
    --success-glow: rgba(0, 255, 255, 0.3);
    --warning: #ff8c00;
    --warning-rgb: 255, 140, 0;
    --warning-glow: rgba(255, 140, 0, 0.3);
    --danger: #ff2060;
    --danger-rgb: 255, 32, 96;
    --danger-glow: rgba(255, 32, 96, 0.3);
    --border: rgba(255, 0, 255, 0.12);

    --glass-bg: rgba(26, 13, 46, 0.8);
    --glass-border: rgba(255, 0, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);

    --cm-secondary: #1e90ff;
    --cm-header-gradient: linear-gradient(135deg, #2d1b4e, #0d0d1a);
    --cm-glow-color: rgba(255, 0, 255, 0.12);
    --cm-progress-gradient: linear-gradient(90deg, #ff00ff, #8b5cf6);
    --cm-success-burst: #00ffff;
}

/* California: Deep purple-black bg, magenta→pink structure, cyan atmosphere, neon lime highlights
   Inspired by Super Bowl LX / Golden Gate "Neon Bay" palette */
body.dark-mode.color-california {
    --bg-primary: #190524;
    --bg-secondary: #2A0A38;
    --bg-tertiary: #3d1252;
    --text-primary: #f0e8f5;
    --text-secondary: #b8a0c8;
    --accent: #E60050;
    --accent-rgb: 230, 0, 80;
    --accent-hover: #ff1a6a;
    --accent-secondary: #00B5E2;
    --accent-glow: rgba(230, 0, 80, 0.35);
    --success: #D0DE21;
    --success-rgb: 208, 222, 33;
    --success-glow: rgba(208, 222, 33, 0.3);
    --warning: #F9E300;
    --warning-rgb: 249, 227, 0;
    --warning-glow: rgba(249, 227, 0, 0.3);
    --danger: #ff3860;
    --danger-rgb: 255, 56, 96;
    --danger-glow: rgba(255, 56, 96, 0.3);
    --border: rgba(230, 0, 80, 0.15);

    --glass-bg: rgba(42, 10, 56, 0.85);
    --glass-border: rgba(230, 0, 80, 0.12);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);

    --cm-secondary: #00B5E2;
    --cm-header-gradient: linear-gradient(135deg, #2A0A38, #190524);
    --cm-glow-color: rgba(201, 0, 118, 0.2);
    --cm-progress-gradient: linear-gradient(90deg, #C90076, #E60050);
    --cm-success-burst: #D0DE21;
}

/* Color mode shared styles - only apply when a color mode is active
   Uses body.dark-mode.color-* selectors for specificity */
body.dark-mode.color-arcade .glass-header,
body.dark-mode.color-arcade .workspace-header,
body.dark-mode.color-slime .glass-header,
body.dark-mode.color-slime .workspace-header,
body.dark-mode.color-cyber .glass-header,
body.dark-mode.color-cyber .workspace-header,
body.dark-mode.color-california .glass-header,
body.dark-mode.color-california .workspace-header {
    background: var(--cm-header-gradient, var(--glass-bg)) !important;
    box-shadow: 0 2px 12px var(--cm-glow-color, transparent) !important;
    border-color: var(--border);
}

body.dark-mode.color-arcade .progress-fill,
body.dark-mode.color-arcade .progress-bar-fill,
body.dark-mode.color-slime .progress-fill,
body.dark-mode.color-slime .progress-bar-fill,
body.dark-mode.color-cyber .progress-fill,
body.dark-mode.color-cyber .progress-bar-fill,
body.dark-mode.color-california .progress-fill,
body.dark-mode.color-california .progress-bar-fill {
    background: var(--cm-progress-gradient, var(--accent)) !important;
}

/* Subtle border glow on cards in color modes (max 6px) */
body[class*="color-"] .glass-card {
    box-shadow: var(--glass-shadow), 0 0 6px var(--cm-glow-color, transparent);
}

/* Writing area stays calm/neutral in all color modes - "Calm Core" */
body[class*="color-"] textarea,
body[class*="color-"] .writing-area,
body[class*="color-"] .editor-textarea,
body[class*="color-"] [contenteditable] {
    background: var(--bg-secondary) !important;
    box-shadow: none !important;
    border-color: var(--border) !important;
}

/* Pulse animation for progress bars in color modes (< 1Hz) */
@keyframes cm-progress-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

body[class*="color-"] .progress-fill,
body[class*="color-"] .progress-bar-fill {
    animation: cm-progress-pulse 2s ease-in-out infinite;
}

/* Success burst glow on completion */
@keyframes cm-success-glow {
    0% { box-shadow: 0 0 0 0 var(--success-glow); }
    50% { box-shadow: 0 0 6px 3px var(--success-glow); }
    100% { box-shadow: 0 0 0 0 var(--success-glow); }
}

/* Color mode accent buttons get glow on hover */
body[class*="color-"] button[class*="submit"],
body[class*="color-"] .btn-primary,
body[class*="color-"] button.primary-btn {
    box-shadow: 0 0 4px var(--accent-glow);
}

body[class*="color-"] button[class*="submit"]:hover,
body[class*="color-"] .btn-primary:hover,
body[class*="color-"] button.primary-btn:hover {
    box-shadow: 0 0 6px var(--accent-glow);
}

/* Streak display gets theme color */
body[class*="color-"] .streak-display,
body[class*="color-"] .streak-badge {
    color: var(--cm-success-burst, var(--success));
    text-shadow: 0 0 4px var(--success-glow);
}

/* Auto-throttle: disable animations when user is typing */
body[class*="color-"].user-typing .progress-fill,
body[class*="color-"].user-typing .progress-bar-fill {
    animation: none;
}

body[class*="color-"].user-typing .glass-header,
body[class*="color-"].user-typing .workspace-header {
    box-shadow: none !important;
}

body[class*="color-"].user-typing button[class*="submit"],
body[class*="color-"].user-typing .btn-primary {
    box-shadow: none;
}

/* ═══════════════════════════════════════════════════════════════════════════
   ASSIGNMENT CATEGORY THEMING - Visual identity per assignment type
   Writing = Indigo/Blue, Reading = Teal/Emerald, Literature = Amber/Warm
   Applied via body.category-* classes set by workspace JavaScript
   ═══════════════════════════════════════════════════════════════════════════ */

/* Category color variables - override --cat-* to theme workspace elements */
:root {
    --cat-color: var(--accent);
    --cat-rgb: var(--accent-rgb);
    --cat-light: rgba(var(--accent-rgb), 0.08);
    --cat-border: rgba(var(--accent-rgb), 0.2);
    --cat-glow: rgba(var(--accent-rgb), 0.12);
    --cat-icon: "📝";
    --cat-gradient: linear-gradient(135deg, var(--accent), var(--accent-secondary));
}

/* Writing: Indigo/Blue - creative expression */
body.category-writing {
    --cat-color: #4f46e5;
    --cat-rgb: 79, 70, 229;
    --cat-light: rgba(79, 70, 229, 0.07);
    --cat-border: rgba(79, 70, 229, 0.2);
    --cat-glow: rgba(79, 70, 229, 0.12);
    --cat-icon: "✍️";
    --cat-gradient: linear-gradient(135deg, #4f46e5, #7c3aed);
}

/* Reading: Teal/Emerald - analytical, informational */
body.category-reading {
    --cat-color: #0d9488;
    --cat-rgb: 13, 148, 136;
    --cat-light: rgba(13, 148, 136, 0.07);
    --cat-border: rgba(13, 148, 136, 0.2);
    --cat-glow: rgba(13, 148, 136, 0.12);
    --cat-icon: "📖";
    --cat-gradient: linear-gradient(135deg, #0d9488, #0891b2);
}

/* Literature: Amber/Warm - stories, characters, themes */
body.category-literature {
    --cat-color: #d97706;
    --cat-rgb: 217, 119, 6;
    --cat-light: rgba(217, 119, 6, 0.07);
    --cat-border: rgba(217, 119, 6, 0.2);
    --cat-glow: rgba(217, 119, 6, 0.12);
    --cat-icon: "📚";
    --cat-gradient: linear-gradient(135deg, #d97706, #ea580c);
}

/* Dark mode adjustments - lighten category colors for better contrast */
body.dark-mode.category-writing {
    --cat-color: #818cf8;
    --cat-rgb: 129, 140, 248;
    --cat-light: rgba(129, 140, 248, 0.1);
    --cat-border: rgba(129, 140, 248, 0.25);
    --cat-glow: rgba(129, 140, 248, 0.15);
}

body.dark-mode.category-reading {
    --cat-color: #2dd4bf;
    --cat-rgb: 45, 212, 191;
    --cat-light: rgba(45, 212, 191, 0.1);
    --cat-border: rgba(45, 212, 191, 0.25);
    --cat-glow: rgba(45, 212, 191, 0.15);
}

body.dark-mode.category-literature {
    --cat-color: #fbbf24;
    --cat-rgb: 251, 191, 36;
    --cat-light: rgba(251, 191, 36, 0.1);
    --cat-border: rgba(251, 191, 36, 0.25);
    --cat-glow: rgba(251, 191, 36, 0.15);
}

/* Color modes override category colors - keep neon theme consistent */
body[class*="color-"].category-writing,
body[class*="color-"].category-reading,
body[class*="color-"].category-literature {
    --cat-color: var(--accent);
    --cat-rgb: var(--accent-rgb);
    --cat-light: rgba(var(--accent-rgb), 0.08);
    --cat-border: rgba(var(--accent-rgb), 0.2);
    --cat-glow: rgba(var(--accent-rgb), 0.12);
}

/* ── Category-aware workspace elements ── */

/* Passage panel header accent */
body[class*="category-"] .passage-panel {
    border-top: 3px solid var(--cat-color);
}

body[class*="category-"] .passage-panel h3 {
    color: var(--cat-color);
}

/* Step card category accent */
body[class*="category-"] .task-section {
    border-color: var(--cat-color);
    background: linear-gradient(135deg, var(--cat-light), rgba(var(--cat-rgb), 0.03));
    box-shadow: 0 4px 20px var(--cat-glow);
}

body[class*="category-"] .task-header {
    color: var(--cat-color);
    border-bottom-color: var(--cat-border);
}

body[class*="category-"] .task-item {
    border-left-color: var(--cat-color);
}

body[class*="category-"] .task-item::before {
    color: var(--cat-color);
}

/* Instruction context accent */
body[class*="category-"] .instruction-context {
    border-left-color: var(--cat-color);
    background: var(--cat-light);
}

/* Progress bar category gradient */
body[class*="category-"] .step-progress-fill {
    background: var(--cat-gradient);
}

/* Progress panel accents */
body[class*="category-"] .progress-panel h3 {
    color: var(--cat-color);
}

body[class*="category-"] .step-item.current {
    background: var(--cat-light);
    border-left-color: var(--cat-color);
}

body[class*="category-"] .step-item.current .step-icon {
    color: var(--cat-color);
}

body[class*="category-"] .step-item.clickable:hover {
    background: rgba(var(--cat-rgb), 0.12);
}

/* Step badge */
body[class*="category-"] .step-badge {
    background: var(--cat-gradient);
}

/* Intro badge */
body[class*="category-"] .intro-type-badge {
    background: var(--cat-light);
    color: var(--cat-color);
    border: 1px solid var(--cat-border);
}

body[class*="category-"] .intro-step-chip .step-num {
    background: var(--cat-color);
}

/* Assignment intro accent */
body[class*="category-"] .assignment-intro {
    border-left-color: var(--cat-color);
}

/* Feedback panel accent */
body[class*="category-"] .feedback-panel {
    border-left-color: var(--cat-color);
}

body[class*="category-"] .feedback-panel h3 {
    color: var(--cat-color);
}

/* Feedback score accent */
body[class*="category-"] .feedback-item.score-reason {
    border-left-color: var(--cat-color);
}

/* Writing area focus glow uses category color */
body[class*="category-"] .writing-area textarea:focus {
    border-color: var(--cat-color);
    box-shadow: 0 0 0 3px var(--cat-glow);
}

/* View essay button */
body[class*="category-"] .view-essay-btn:hover {
    box-shadow: 0 4px 12px var(--cat-glow);
}

/* Passage panel header background tint */
body[class*="category-"] .passage-header {
    padding-bottom: 12px;
    border-bottom: 1px solid var(--cat-border);
}

/* ═══════════════════════════════════════════════════════════════════════════
   THEME PICKER - Unified theme system
   ═══════════════════════════════════════════════════════════════════════════ */

.theme-picker-container {
    position: relative;
    display: inline-block;
    z-index: 1002;
}

#themeBtn {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

#themeBtn:hover {
    background: var(--accent);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 4px 12px var(--accent-glow);
}

#themePicker {
    display: none;
    position: absolute;
    top: 56px;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 12px;
    z-index: 1001;
    min-width: 280px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

#themePicker.open {
    display: block;
    animation: themePickerFadeIn 0.15s ease;
}

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

.theme-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.theme-card {
    display: flex;
    flex-direction: column;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--bg-tertiary);
    cursor: pointer;
    overflow: hidden;
    transition: all 0.2s ease;
    padding: 0;
    text-align: left;
    color: var(--text-primary);
    font-family: inherit;
    position: relative;
}

.theme-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.theme-card.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.theme-preview {
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.theme-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    z-index: 1;
}

.theme-check {
    display: none;
    position: absolute;
    top: 4px;
    right: 4px;
    font-size: 0.9rem;
    font-weight: 700;
    color: white;
    background: var(--accent);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    z-index: 2;
}

.theme-card.active .theme-check {
    display: flex;
}

.theme-label {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 8px 10px 2px;
    line-height: 1.2;
}

.theme-desc {
    font-size: 0.7rem;
    color: var(--text-secondary);
    padding: 0 10px 10px;
    line-height: 1.3;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Glass Morphism Effect */
.glass-card, .glass-header, .glass-button {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.glass-button {
    padding: 12px 16px;
    background: var(--glass-bg);
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    transition: transform 0.2s ease;
}

.glass-button:hover {
    transform: scale(1.1);
}

/* Container - Responsive to screen size */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Adaptive container that scales with viewport */
.container-adaptive {
    width: 92%;
    max-width: 2400px;
    margin: 0 auto;
    padding: clamp(20px, 3vw, 60px) clamp(16px, 3vw, 48px);
}

.workspace-container {
    max-width: 1800px;
}

/* Large screen optimizations (1440p+) */
@media (min-width: 1920px) {
    .container {
        max-width: 1600px;
    }
    .container-adaptive {
        width: 90%;
    }
}

/* 4K / Ultra-wide screens (2560px+) */
@media (min-width: 2560px) {
    .container {
        max-width: 2000px;
    }
    .container-adaptive {
        width: 88%;
        max-width: 3200px;
    }
}

/* 4K screens (3840px+) */
@media (min-width: 3840px) {
    .container {
        max-width: 2800px;
    }
    .container-adaptive {
        width: 85%;
        max-width: 3600px;
    }
}

/* Header */
.glass-header {
    padding: 32px;
    margin-bottom: 32px;
    text-align: center;
}

.glass-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Dashboard */
.dashboard {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.glass-card {
    padding: 24px;
}

.glass-card h2 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.grade-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent), #6366f1);
    color: white;
    padding: 6px 14px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

/* Dashboard Layout */
.welcome-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    margin-bottom: 24px;
}

.welcome-content h2 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.quick-stats {
    display: flex;
    gap: 32px;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Achievements Bar */
.achievements-bar {
    padding: 16px 24px;
    margin-bottom: 24px;
}

.achievements-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.badges-section {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
}

.badges-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badges-list {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, filter 0.2s ease;
    position: relative;
    min-width: 52px;
}

.badge-item:hover {
    transform: scale(1.12);
    filter: brightness(1.1);
}

.badge-item:active {
    transform: scale(0.95);
}

.badge-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    border-radius: 50%;
    background: linear-gradient(145deg, rgba(var(--accent-rgb), 0.15), rgba(var(--accent-rgb), 0.05));
    border: 2px solid rgba(var(--accent-rgb), 0.4);
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.15), inset 0 1px 2px rgba(255,255,255,0.3);
    position: relative;
}

.badge-item:not(.badge-locked) .badge-icon {
    background: linear-gradient(145deg, rgba(var(--accent-rgb), 0.2), rgba(245,158,11,0.12));
    border-color: rgba(var(--accent-rgb), 0.5);
    box-shadow: 0 2px 10px rgba(var(--accent-rgb), 0.25), inset 0 1px 3px rgba(255,255,255,0.4);
}

.badge-name {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.2;
    max-width: 64px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.no-badges {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Streak Section */
.streak-section {
    display: flex;
    align-items: center;
}

.streak-section.no-streak {
    opacity: 0.4;
}

.streak-display {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(239, 68, 68, 0.1));
    border-radius: 20px;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.streak-flame {
    font-size: 1.3rem;
    animation: flicker 1.5s ease-in-out infinite;
}

@keyframes flicker {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.streak-count {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--warning);
}

.streak-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .welcome-header {
        flex-direction: column;
        gap: 16px;
        padding: 16px 20px;
        text-align: center;
    }

    .header-right {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .quick-stats {
        gap: 16px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .stat-value {
        font-size: 1.4rem;
    }

    .achievements-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .badges-section {
        flex-direction: column;
        align-items: flex-start;
    }

    .button-group {
        flex-direction: column;
        gap: 8px;
    }

    .button-group button {
        width: 100%;
    }
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Skeleton loading animation */
.skeleton-card {
    padding: 20px;
    border-radius: 12px;
    background: var(--glass-bg);
    margin-bottom: 12px;
}

.skeleton-line {
    height: 14px;
    border-radius: 6px;
    background: linear-gradient(90deg, var(--glass-bg) 25%, rgba(var(--accent-rgb, 99, 102, 241), 0.08) 50%, var(--glass-bg) 75%);
    background-size: 200% 100%;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    margin-bottom: 10px;
}

.skeleton-line.short { width: 40%; }
.skeleton-line.medium { width: 65%; }
.skeleton-line.long { width: 90%; }

@keyframes skeleton-pulse {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.retry-btn {
    background: var(--accent, #6366f1);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 10px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.retry-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--accent-rgb, 99, 102, 241), 0.35);
}

.retry-btn:active {
    transform: translateY(0);
}

.dashboard-section {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 24px;
}

.section-header {
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 1.4rem;
    margin-bottom: 4px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.section-header .tabs {
    margin-top: 12px;
}

/* Available Assignments */
.available-section {
    border: 2px solid var(--accent);
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(99, 102, 241, 0.05));
}

.available-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.available-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.available-card:hover {
    transform: translateX(4px);
    box-shadow: 0 8px 32px rgba(79, 70, 229, 0.2);
}

.available-card-content h3 {
    font-size: 1.1rem;
    margin-bottom: 6px;
}

.assignment-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.start-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.start-button:hover {
    background: var(--accent-hover);
    transform: scale(1.02);
}

.start-icon {
    font-size: 1.1rem;
}

/* Your Work Section */
.your-work-section {
    max-height: 600px;
    overflow-y: auto;
}

.your-work-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Assignments Grid (legacy support) */
.assignments-section h2 {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.tab-button {
    padding: 10px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-button:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.tab-button.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.tab-count {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.85rem;
}

.tab-button.active .tab-count {
    background: rgba(255, 255, 255, 0.3);
}

.tab-content {
    display: none !important;
}

.tab-content.active {
    display: flex !important;
    flex-direction: column;
    gap: 12px;
}

/* Grid layout for tab content when needed */
.tab-content.active.assignments-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.assignments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.assignment-card {
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    padding: 20px;
}

.assignment-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.assignment-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

/* Compact cards in your-work section */
.your-work-cards .assignment-card {
    position: relative;
    padding: 16px 20px;
}

.your-work-cards .assignment-card h3 {
    margin-bottom: 8px;
    padding-right: 100px; /* Space for status badge */
}

.your-work-cards .assignment-card .progress-section {
    margin: 8px 0;
}

.your-work-cards .assignment-card .button-group {
    margin-top: 12px;
}

.your-work-cards .assignment-card .grade-display {
    font-size: 0.95rem;
    margin-top: 8px;
}

.your-work-cards .assignment-card .date-info {
    font-size: 0.85rem;
}

.your-work-cards .assignment-card .status-badge {
    position: absolute;
    top: 16px;
    right: 16px;
}

/* Progress Bar */
.progress-section {
    margin: 16px 0;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--border);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #8b5cf6);
    border-radius: 6px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.grade-display {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--success);
    margin-top: 12px;
}

.date-info {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.status-badge.complete {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid var(--success);
}

.status-badge.in-progress {
    background: rgba(79, 70, 229, 0.15);
    color: var(--accent);
    border: 1px solid var(--accent);
}

.status-badge.archived {
    background: rgba(107, 114, 128, 0.15);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

/* Archived assignment card */
.assignment-card.archived-card {
    opacity: 0.75;
    border-color: var(--border);
}

.assignment-card.archived-card:hover {
    opacity: 1;
}

/* Growth Path (SLP) origin card */
.assignment-card.slp-origin-card {
    border-left: 3px solid #8b5cf6;
}

.slp-origin-banner {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    margin: -16px -20px 12px -20px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.10), rgba(109, 40, 217, 0.06));
    border-bottom: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 12px 12px 0 0;
    color: #7c3aed;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.slp-origin-icon {
    font-size: 1rem;
}

.button-group {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.button-group button {
    flex: 1;
}

/* Buttons */
.primary-button, .secondary-button {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.primary-button {
    background: var(--accent);
    color: white;
}

.primary-button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.primary-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.secondary-button {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.secondary-button:hover {
    background: var(--accent);
    color: white;
}

/* Demo Card */
.demo-card {
    border: 2px solid var(--accent);
}

.assignment-preview h4 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.assignment-meta {
    display: flex;
    gap: 8px;
    margin: 16px 0;
    flex-wrap: wrap;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
    font-style: italic;
}

/* Assignment Type Groups */
.assignment-type-group {
    margin-bottom: 16px;
}

.assignment-type-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.assignment-type-header:hover {
    background: rgba(79, 70, 229, 0.1);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.15);
}

/* Expand hint that shows on hover */
.expand-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0;
    transition: opacity 0.2s ease;
    margin-left: 8px;
}

.assignment-type-header:hover .expand-hint {
    opacity: 1;
}

.assignment-type-header.expanded .expand-hint {
    display: none;
}

.in-progress-hint {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--warning, #d97706);
    background: rgba(var(--warning-rgb, 217, 119, 6), 0.1);
    padding: 2px 8px;
    border-radius: 6px;
    margin-left: 8px;
}

/* Pulse animation for first-time users */
@keyframes subtlePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
    50% { box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1); }
}

.assignment-type-header:not(.expanded) {
    animation: subtlePulse 3s ease-in-out infinite;
}

.assignment-type-header:hover,
.assignment-type-header.expanded {
    animation: none;
}

.assignment-type-header.expanded {
    border-radius: 12px 12px 0 0;
    border-bottom-color: transparent;
    background: rgba(79, 70, 229, 0.08);
}

.type-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.type-icon {
    font-size: 1.4rem;
}

.type-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.type-count {
    background: var(--accent);
    color: white;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

.type-expand-icon {
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.assignment-type-header.expanded .type-expand-icon {
    transform: rotate(180deg);
}

.assignment-type-content {
    display: none;
    padding: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-top: none;
    border-radius: 0 0 12px 12px;
    flex-direction: column;
    gap: 12px;
}

.assignment-type-content.expanded {
    display: flex;
}

.assignment-type-content .available-card {
    margin: 0;
}

/* Workspace Layout */
.workspace-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 32px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--accent);
}

.workspace-header h1 {
    font-size: 1.8rem;
    background: none;
    -webkit-text-fill-color: var(--text-primary);
}

.progress-indicator {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.workspace-layout {
    display: grid;
    grid-template-columns: 300px 1fr 280px;
    gap: 24px;
    margin-top: 24px;
}

/* Two-column layout for assignments without passage (e.g., narrative writing) */
.workspace-layout.no-passage {
    grid-template-columns: 1fr 280px;
}

/* Passage Panel - enhanced reading experience */
.passage-panel {
    height: fit-content;
    position: sticky;
    top: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    transition: width 0.3s ease, min-width 0.3s ease, padding 0.3s ease;
    animation: fadeIn 0.3s ease;
    border-radius: 16px;
}

.passage-panel h3 {
    margin-bottom: 0;
    color: var(--accent);
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.passage-content {
    line-height: 1.85;
    color: var(--text-primary);
    font-size: 0.95rem;
    white-space: pre-line;
    counter-reset: passage-paragraph;
}

/* Passage paragraphs - numbered with better readability */
.passage-content p {
    margin-bottom: 1.2em;
    line-height: 1.85;
    position: relative;
    padding-left: 28px;
    counter-increment: passage-paragraph;
}

.passage-content p::before {
    content: counter(passage-paragraph);
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-secondary);
    opacity: 0.5;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-tertiary);
}

.passage-content p:last-child {
    margin-bottom: 0;
}

/* Key terms in passage - bolded anchors, clickable */
.passage-content .key-term {
    font-weight: 600;
    color: var(--accent);
    cursor: pointer;
    border-bottom: 1px dotted var(--accent);
    transition: background 0.2s;
}

.passage-content .key-term:hover {
    background: rgba(79, 70, 229, 0.15);
    border-radius: 2px;
}

.passage-content .key-term:active {
    background: rgba(79, 70, 229, 0.25);
}

/* Definition tooltip - centered on screen */
/* z-index must be higher than fullscreen passage (9999) and modals (10001) */
.definition-tooltip {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    display: none;
    width: 90%;
    max-width: 360px;
    background: var(--bg-primary);
    border: 2px solid var(--accent);
    border-radius: 16px;
    padding: 24px 28px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
    z-index: 10003;
    opacity: 0;
    pointer-events: none;
}

.definition-tooltip.visible {
    display: block;
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    animation: tooltipPopIn 0.2s ease;
}

.definition-tooltip-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 10002;
    display: none;
    opacity: 0;
}

.definition-tooltip-overlay.visible {
    display: block;
    opacity: 1;
    animation: overlayFadeIn 0.2s ease;
}

@keyframes tooltipPopIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

@keyframes overlayFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.tooltip-term {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--accent);
    margin-bottom: 12px;
    text-transform: capitalize;
    border-bottom: 1px solid var(--border);
    padding-bottom: 10px;
}

.tooltip-definition {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
}

/* User highlights */
.passage-content .user-highlight {
    background: rgba(250, 204, 21, 0.4);
    border-radius: 2px;
    padding: 0 2px;
}

/* Highlight toolbar */
.highlight-toolbar {
    position: absolute;
    display: none;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 100;
    gap: 4px;
}

.highlight-toolbar.visible {
    display: flex;
}

.highlight-toolbar button {
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}

.highlight-toolbar button:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.highlight-toolbar .remove-highlight {
    color: var(--text-secondary);
}

.highlight-toolbar .remove-highlight:hover {
    background: #ef4444;
    border-color: #ef4444;
}

/* Step Card - reduced visual noise */
.step-card {
    padding: 28px 32px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.step-header {
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

.step-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.3;
}

/* Step badge showing current step number */
.step-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.step-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

/* ===== Structured Step Content ===== */

/* Context section - secondary, lighter text */
.instruction-context {
    padding: 16px 20px;
    margin-bottom: 16px;
    background: rgba(79, 70, 229, 0.05);
    border-radius: 10px;
    border-left: 3px solid var(--accent);
}

.instruction-context.hidden {
    display: none;
}

.context-text {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* Note banner - dismissible info */
.step-note-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    margin-bottom: 16px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.step-note-banner.hidden {
    display: none;
}

.note-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.note-text {
    flex: 1;
}

.dismiss-note-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0 4px;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.dismiss-note-btn:hover {
    opacity: 1;
}

/* Task section - primary, prominent */
.task-section {
    padding: 24px 28px;
    margin-bottom: 24px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(139, 92, 246, 0.05));
    border-radius: 16px;
    border: 2px solid var(--accent);
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.1);
}

.task-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--accent);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(79, 70, 229, 0.2);
}

.task-header::before {
    content: "📝";
    font-size: 1.2rem;
}

body.category-reading .task-header::before {
    content: "📖";
}

body.category-literature .task-header::before {
    content: "📚";
}

body.category-writing .task-header::before {
    content: "✍️";
}

.task-checklist {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.task-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-secondary);
    border-radius: 10px;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    border-left: 3px solid var(--accent);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.task-item:hover {
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.1);
}

.task-item::before {
    content: "→";
    color: var(--accent);
    font-weight: 700;
    font-weight: bold;
    flex-shrink: 0;
}

/* ===== Panel Controls ===== */

.passage-header, .progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.passage-header h3, .progress-header h3 {
    margin-bottom: 0;
    color: var(--accent);
}

.passage-controls {
    display: flex;
    gap: 8px;
}

.panel-collapse-btn {
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

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

/* Collapsed panel states */
.passage-panel.collapsed,
.progress-panel.collapsed {
    width: 48px;
    min-width: 48px;
    padding: 16px 8px;
    overflow: hidden;
}

.passage-panel.collapsed .passage-content,
.passage-panel.collapsed .passage-confirmation,
.passage-panel.collapsed h3,
.progress-panel.collapsed .steps-list,
.progress-panel.collapsed .grade-section,
.progress-panel.collapsed h3 {
    display: none;
}

.passage-panel.collapsed .passage-header,
.progress-panel.collapsed .progress-header {
    justify-content: center;
}

/* Hide fullscreen toggle when collapsed, but keep collapse button visible */
.passage-panel.collapsed .toggle-passage-button {
    display: none;
}

/* Keep the collapse button visible and centered when panel is collapsed */
.passage-panel.collapsed .passage-controls {
    justify-content: center;
}

.passage-panel.collapsed .panel-collapse-btn {
    display: flex;
}

/* Adjust grid when panels collapse */
.workspace-layout:has(.passage-panel.collapsed) {
    grid-template-columns: 48px 1fr 280px;
}

.workspace-layout:has(.progress-panel.collapsed) {
    grid-template-columns: 300px 1fr 48px;
}

.workspace-layout:has(.passage-panel.collapsed):has(.progress-panel.collapsed) {
    grid-template-columns: 48px 1fr 48px;
}

.step-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success), #34d399);
    transition: width 0.3s ease;
}

/* Legacy prompt section - hidden when using structured layout */
.prompt-section {
    display: none;
}

.step-prompt {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Writing Area */
.writing-area textarea {
    width: 100%;
    padding: 20px;
    border: 2px solid var(--border);
    border-radius: 14px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1.05rem;
    font-family: inherit;
    line-height: 1.8;
    resize: vertical;
    min-height: 200px;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.writing-area textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.1);
}

.writing-area textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.input-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

/* Submit Section with Word Count Status */
.submit-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.word-count-status {
    min-height: 24px;
}

.word-count-indicator {
    font-size: 0.85rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s ease;
}

.word-count-indicator.needs-more {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.word-count-indicator.ready {
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.word-count-indicator .ready-icon {
    font-weight: 700;
}

/* Disabled submit button styling */
#submitButton:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

#submitButton:disabled:hover {
    background: var(--accent);
    transform: none;
    box-shadow: none;
}

.count-indicators {
    display: flex;
    align-items: center;
    gap: 8px;
}

.char-count, .word-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.word-count {
    font-weight: 500;
}

.count-separator {
    color: var(--border);
    font-size: 0.8rem;
}

/* Length Guidance */
.length-guidance {
    margin-top: 12px;
    padding: 10px 16px;
    background: var(--bg-tertiary);
    border-radius: 10px;
}

.length-bar {
    width: 100%;
    height: 5px;
    background: rgba(0, 0, 0, 0.08);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 6px;
}

.length-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s ease, background-color 0.3s ease;
}

.length-hint {
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

/* Save Indicator */
.controls-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.save-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    opacity: 0;
}

.save-indicator.saving {
    opacity: 1;
    color: var(--text-secondary);
}

.save-indicator.saving .save-icon {
    animation: pulse 1s ease-in-out infinite;
}

.save-indicator.saved {
    opacity: 1;
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.save-indicator.hidden {
    opacity: 0;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.save-icon {
    font-size: 0.9rem;
}

.save-text {
    font-weight: 500;
}

/* Feedback Panel */
.feedback-panel {
    margin-top: 24px;
    border-left: 4px solid var(--accent);
    border-radius: 16px;
    animation: feedbackSlideIn 0.35s ease;
}

@keyframes feedbackSlideIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.feedback-panel.hidden {
    display: none;
}

.feedback-panel h3 {
    margin-bottom: 16px;
    color: var(--accent);
    font-size: 1.1rem;
    font-weight: 700;
}

.feedback-item {
    display: flex;
    gap: 12px;
    padding: 16px 18px;
    margin-bottom: 12px;
    border-radius: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    animation: feedbackSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.feedback-item:nth-child(1) { animation-delay: 0.1s; }
.feedback-item:nth-child(2) { animation-delay: 0.2s; }
.feedback-item:nth-child(3) { animation-delay: 0.3s; }
.feedback-item:nth-child(4) { animation-delay: 0.4s; }
.feedback-item:nth-child(5) { animation-delay: 0.5s; }

.feedback-item:hover {
    transform: translateX(2px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.feedback-item.required {
    border-left: 4px solid var(--danger);
    background: linear-gradient(135deg, rgba(var(--danger-rgb), 0.06), transparent);
}

.feedback-item.suggested {
    border-left: 4px solid var(--warning);
    background: linear-gradient(135deg, rgba(var(--warning-rgb), 0.06), transparent);
}

.feedback-item.praise {
    border-left: 4px solid var(--success);
    background: linear-gradient(135deg, rgba(var(--success-rgb), 0.06), transparent);
}

.feedback-item.plagiarism-warning {
    border-left: 4px solid var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.feedback-item.ai-suggestion-warning {
    border-left: 4px solid var(--warning);
    background: rgba(245, 158, 11, 0.1);
}

.feedback-item.score-reason {
    border-left: 4px solid var(--accent);
    background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.06), transparent);
}

.feedback-item.improvement {
    border-left: 4px solid var(--warning);
    background: linear-gradient(135deg, rgba(var(--warning-rgb), 0.06), transparent);
}

.feedback-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
}

/* Scoring Display */
.feedback-score {
    padding: 24px;
    margin-bottom: 16px;
    background: var(--bg-secondary);
    border-radius: 14px;
    border: 1px solid var(--border);
    text-align: center;
    animation: feedbackSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.score-display {
    text-align: center;
}

.score-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1;
    animation: scoreReveal 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scoreReveal {
    0% { transform: scale(0); opacity: 0; }
    60% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

.score-bar {
    width: 100%;
    height: 10px;
    background: var(--bg-tertiary);
    border-radius: 5px;
    overflow: hidden;
}

.score-bar-fill {
    height: 100%;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.3s ease;
    border-radius: 5px;
}

.feedback-label {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.feedback-actions {
    margin-top: 16px;
}

/* Draft Check (Pre-Submission Score Preview) */
.submit-buttons-row {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.draft-check-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border: 2px dashed var(--accent);
    border-radius: 12px;
    background: rgba(var(--accent-rgb), 0.06);
    color: var(--accent);
    font-weight: 600;
    font-size: 0.92rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.draft-check-btn:hover:not(:disabled) {
    background: rgba(var(--accent-rgb), 0.14);
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(var(--accent-rgb), 0.15);
}

.draft-check-btn:active:not(:disabled) {
    transform: translateY(0);
}

.draft-check-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    border-style: dashed;
}

.draft-check-icon {
    font-size: 1rem;
}

.draft-check-counter {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    background: rgba(var(--accent-rgb), 0.15);
    color: var(--accent);
}

/* Draft Check Preview Panel */
.draft-check-panel {
    margin-top: 20px;
    border-left: 4px solid var(--accent);
    border-radius: 16px;
    animation: feedbackSlideIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 2px dashed rgba(var(--accent-rgb), 0.3);
    border-left: 4px solid var(--accent);
    background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.03), transparent);
}

.draft-check-panel.hidden {
    display: none;
}

.draft-check-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.draft-check-header h3 {
    margin: 0;
    color: var(--accent);
    font-size: 1.05rem;
    font-weight: 700;
    flex: 1;
}

.draft-check-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    background: rgba(var(--accent-rgb), 0.12);
    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.draft-check-dismiss {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 8px;
    transition: all 0.15s ease;
    line-height: 1;
}

.draft-check-dismiss:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.draft-check-score {
    text-align: center;
    padding: 20px;
    margin-bottom: 14px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.draft-check-score .score-number {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 10px;
    animation: scoreReveal 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.draft-check-item {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    margin-bottom: 10px;
    border-radius: 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    animation: feedbackSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.draft-check-item:nth-child(2) { animation-delay: 0.1s; }
.draft-check-item:nth-child(3) { animation-delay: 0.2s; }
.draft-check-item:nth-child(4) { animation-delay: 0.3s; }

.draft-check-revision {
    margin-top: 8px;
    padding: 10px 12px;
    background: rgba(255,255,255,0.03);
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 0.92rem;
    line-height: 1.5;
}

.draft-check-revision div {
    margin-bottom: 4px;
}

.draft-check-revision div:last-child {
    margin-bottom: 0;
}

.draft-check-footer {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.draft-check-footer p {
    font-size: 0.83rem;
    color: var(--text-secondary);
    font-style: italic;
    text-align: center;
    margin: 0;
}

.draft-check-limit {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px;
    background: rgba(var(--success-rgb), 0.06);
    border-radius: 10px;
    border: 1px solid rgba(var(--success-rgb), 0.2);
}

.draft-check-limit p {
    margin: 0;
    font-weight: 500;
    color: var(--text-primary);
}

/* Revision Coaching Panel */
.revision-coaching-panel {
    margin-top: 16px;
    border-left: 4px solid rgba(var(--accent-rgb), 1);
}

.revision-coaching-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.revision-coaching-header h3 {
    flex: 1;
    margin: 0;
    font-size: 1rem;
}

.revision-coaching-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    background: rgba(var(--accent-rgb), 0.15);
    color: rgba(var(--accent-rgb), 1);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.revision-coaching-intro {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.revision-target-card {
    background: var(--bg-secondary);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 10px;
    border: 1px solid var(--border);
    transition: border-color 0.2s;
}

.revision-target-card.addressed {
    border-color: rgba(var(--success-rgb), 0.4);
    opacity: 0.7;
}

.revision-target-card.addressed .revision-target-area::after {
    content: ' ✓';
    color: var(--success);
}

.revision-target-area {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    color: rgba(var(--accent-rgb), 1);
    margin-bottom: 6px;
}

.revision-target-area .target-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(var(--accent-rgb), 0.15);
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.revision-target-issue {
    font-size: 0.88rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.revision-target-quote {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
    padding: 8px 12px;
    background: rgba(var(--warning-rgb, 255, 193, 7), 0.08);
    border-left: 3px solid rgba(var(--warning-rgb, 255, 193, 7), 0.4);
    border-radius: 4px;
    margin-bottom: 8px;
}

.revision-target-guidance {
    font-size: 0.88rem;
    color: var(--text-primary);
    padding: 8px 12px;
    background: rgba(var(--success-rgb), 0.06);
    border-left: 3px solid rgba(var(--success-rgb), 0.4);
    border-radius: 4px;
    margin-bottom: 8px;
}

.revision-target-check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.revision-target-check input[type="checkbox"] {
    accent-color: rgba(var(--accent-rgb), 1);
    width: 16px;
    height: 16px;
}

.revision-coaching-footer {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.revision-coaching-footer p {
    font-size: 0.83rem;
    color: var(--text-secondary);
    text-align: center;
    margin: 0;
}

/* Responsive: stack buttons on narrow screens */
@media (max-width: 480px) {
    .submit-buttons-row {
        flex-direction: column;
        gap: 8px;
    }
    .draft-check-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .draft-check-panel {
        animation: none;
    }
    .draft-check-score .score-number {
        animation: none;
    }
    .draft-check-item {
        animation: none;
    }
}

.success-message {
    padding: 16px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 8px;
    border-left: 4px solid var(--success);
}

.success-message p {
    color: var(--success);
    font-weight: 600;
}

.revision-prompt {
    color: var(--text-secondary);
    font-style: italic;
}

/* Feedback Examples */
.feedback-example {
    margin-top: 12px;
    padding: 14px 18px;
    background: rgba(var(--accent-rgb), 0.05);
    border-left: 3px solid var(--accent);
    border-radius: 10px;
    border: 1px solid rgba(var(--accent-rgb), 0.1);
    border-left: 3px solid var(--accent);
}

.example-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    display: block;
    margin-bottom: 8px;
}

.example-text {
    font-size: 1rem;
    color: var(--text-primary);
    font-style: italic;
    display: block;
    line-height: 1.7;
}

.unselectable {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: default;
}

/* Progress Panel */
.progress-panel {
    height: fit-content;
    position: sticky;
    top: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: width 0.3s ease, min-width 0.3s ease, padding 0.3s ease;
}

.progress-panel h3 {
    margin-bottom: 16px;
    color: var(--accent);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.steps-list {
    margin-bottom: 24px;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin-bottom: 6px;
    border-radius: 10px;
    transition: background 0.2s ease, transform 0.15s ease;
    justify-content: space-between;
    border: 1px solid transparent;
}

.step-score {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-left: auto;
}

.step-item.completed {
    background: rgba(16, 185, 129, 0.1);
}

.step-item.completed .step-icon {
    color: var(--success);
}

/* Step completion animation - triggered when step changes from current to completed */
.step-item.just-completed {
    animation: stepComplete 0.6s ease;
}

.step-item.just-completed .step-icon {
    animation: iconPop 0.4s ease 0.1s;
}

@keyframes stepComplete {
    0% {
        background: rgba(79, 70, 229, 0.1);
        transform: scale(1);
    }
    30% {
        background: rgba(16, 185, 129, 0.3);
        transform: scale(1.02);
    }
    60% {
        background: rgba(16, 185, 129, 0.2);
    }
    100% {
        background: rgba(16, 185, 129, 0.1);
        transform: scale(1);
    }
}

@keyframes iconPop {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.4);
    }
    100% {
        transform: scale(1);
    }
}

.step-item.current {
    background: rgba(79, 70, 229, 0.1);
    border-left: 3px solid var(--accent);
    font-weight: 600;
}

.step-item.current .step-icon {
    color: var(--accent);
}

.step-item.pending {
    opacity: 0.5;
}

.step-item.clickable {
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.step-item.clickable:hover {
    transform: translateX(4px);
    background: rgba(79, 70, 229, 0.15);
}

.step-icon {
    font-size: 1.2rem;
}

.step-name {
    font-size: 0.95rem;
    color: var(--text-primary);
}

/* View Essay Section in Progress Panel */
.view-essay-section {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.view-essay-btn {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.view-essay-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.view-essay-section.hidden {
    display: none;
}

/* Assignment Introduction Section */
.assignment-intro {
    margin-bottom: 24px;
    padding: 40px 44px;
    border-left: 4px solid var(--accent);
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

/* Subtle background pattern for intro card */
.assignment-intro::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle at top right, rgba(var(--accent-rgb), 0.06), transparent 70%);
    pointer-events: none;
}

.intro-header {
    margin-bottom: 16px;
    position: relative;
}

.intro-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--accent-glow, rgba(99, 102, 241, 0.12));
    color: var(--accent);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
}

.intro-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
    line-height: 1.3;
}

.assignment-intro .assignment-description {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.intro-steps-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.intro-step-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: transform 0.15s ease, border-color 0.15s ease;
}

.intro-step-chip:hover {
    transform: translateY(-1px);
    border-color: var(--accent);
}

.intro-step-chip .step-num {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 700;
    flex-shrink: 0;
}

.intro-actions {
    display: flex;
    justify-content: center;
}

.assignment-intro-collapsed {
    margin-bottom: 16px;
}

.expand-button {
    padding: 10px 16px;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.expand-button:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.expand-button span {
    font-size: 1.2rem;
    font-weight: bold;
}

/* Passage Panel Header */
.passage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.passage-header h3 {
    margin-bottom: 0;
}

.toggle-passage-button {
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.toggle-passage-button:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: scale(1.1);
}

/* Passage Panel Expanded State */
.passage-panel.expanded {
    min-height: 400px;
}

.passage-panel.expanded .passage-content {
    font-size: 1.05rem;
    line-height: 2;
    margin-bottom: 20px;
}

/* Passage Panel Fullscreen State */
.passage-panel.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    width: 100%;
    height: 100%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px;
    border-radius: 0;
    overflow-y: auto;
    animation: fadeIn 0.3s ease;
}

.passage-panel.fullscreen .passage-content {
    font-size: 1.2rem;
    line-height: 2.2;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.passage-panel.fullscreen .toggle-passage-button {
    position: sticky;
    top: 20px;
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}

.passage-panel.fullscreen .toggle-passage-button:hover {
    background: #dc2626;
    transform: scale(1.15);
}

.workspace-layout.passage-fullscreen > :not(.passage-panel) {
    display: none;
}

/* Assignment Complete State - hide workspace content behind success modal */
.workspace-layout.assignment-complete {
    filter: blur(8px);
    pointer-events: none;
    opacity: 0.3;
    transition: all 0.3s ease;
}

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

.passage-confirmation {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: center;
}

.hidden {
    display: none !important;
}

/* Essay Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 280px; /* Leave space for progress panel on right */
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    overflow-y: auto;
    padding: 40px;
    z-index: 10001;
    animation: slideUp 0.3s ease;
}

/* Step indicator badge in modal headers */
.modal-step-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: var(--accent);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-left: 12px;
}

/* Progress panel stays visible above modal overlay */
.progress-panel {
    z-index: 10002;
    position: sticky;
    top: 24px;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--accent);
}

.modal-header h2 {
    font-size: 1.8rem;
    color: var(--accent);
    margin: 0;
}

.modal-close-button {
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 2rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    line-height: 1;
}

.modal-close-button:hover {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
    transform: rotate(90deg);
}

.modal-body {
    line-height: 2;
}

.essay-section {
    margin-bottom: 20px;
}

/* v2.0 Paragraph-based Modal Display */
.modal-body .essay-paragraph-section {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.modal-body .essay-paragraph-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.modal-body .paragraph-label {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 12px;
}

.modal-body .essay-paragraph {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-primary);
    text-indent: 2em;
    text-align: justify;
    margin-bottom: 0;
}

.essay-paragraph {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-primary);
    margin-bottom: 24px;
    text-indent: 2em;
    text-align: justify;
}

.essay-text {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-primary);
    margin: 0 0 16px 0;
    text-indent: 2em;
}

.essay-full {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--text-primary);
    white-space: pre-wrap;
}

/* Pulsing Glow Animation */
@keyframes pulseGlow {
    0% {
        box-shadow: 0 0 10px rgba(79, 70, 229, 0.4),
                    0 0 20px rgba(79, 70, 229, 0.3),
                    0 0 30px rgba(79, 70, 229, 0.2);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 20px rgba(79, 70, 229, 0.6),
                    0 0 40px rgba(79, 70, 229, 0.5),
                    0 0 60px rgba(79, 70, 229, 0.4);
        transform: scale(1.05);
    }
    100% {
        box-shadow: 0 0 10px rgba(79, 70, 229, 0.4),
                    0 0 20px rgba(79, 70, 229, 0.3),
                    0 0 30px rgba(79, 70, 229, 0.2);
        transform: scale(1);
    }
}

.primary-button.pulse-glow {
    animation: pulseGlow 2s ease-in-out infinite;
    position: relative;
    z-index: 1;
}

.primary-button.pulse-glow:hover {
    animation: none;
}

/* Score Celebration Animation */
@keyframes celebrationPop {
    0% {
        opacity: 0;
        transform: translateY(-50%) scale(0.5);
    }
    50% {
        opacity: 1;
        transform: translateY(-50%) scale(1.2);
    }
    100% {
        opacity: 0;
        transform: translateY(-50%) scale(1.5) translateX(20px);
    }
}

/* Score update highlight */
@keyframes scoreHighlight {
    0% { background: transparent; }
    30% { background: rgba(16, 185, 129, 0.2); }
    100% { background: transparent; }
}

.step-item.score-updated {
    animation: scoreHighlight 1s ease;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .workspace-layout {
        grid-template-columns: 1fr;
    }

    .passage-panel, .progress-panel {
        position: relative;
        top: 0;
    }

    /* On smaller screens, modal takes full width since progress panel isn't in sidebar */
    .modal {
        right: 0;
    }

    .modal-content {
        max-width: 90%;
    }

    .step-card {
        padding: 24px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 20px 12px;
    }

    .glass-header h1 {
        font-size: 2rem;
    }

    .assignments-grid {
        grid-template-columns: 1fr;
    }

    .workspace-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .input-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .submit-section {
        order: -1;
        width: 100%;
    }

    .submit-section #submitButton {
        width: 100%;
    }

    .word-count-indicator {
        text-align: center;
        justify-content: center;
    }

    .controls-right {
        justify-content: space-between;
    }

    .step-card {
        padding: 20px 16px;
    }

    .step-header h2 {
        font-size: 1.3rem;
    }

    .task-section {
        padding: 18px 16px;
    }

    .assignment-intro {
        padding: 28px 20px;
    }

    .intro-title {
        font-size: 1.4rem;
    }

    .passage-content p {
        padding-left: 0;
    }

    .passage-content p::before {
        display: none;
    }
}

/* ===== Success/Completion Modal ===== */
#successModal {
    right: 0; /* Full viewport — override .modal { right: 280px } */
}

.success-modal-content {
    max-width: 1100px;
    width: 95%;
    max-height: 95vh;
    padding: 32px;
    position: relative;
    overflow-y: auto; /* Natural scroll — was overflow: hidden */
}

/* Completion Banner */
.completion-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 24px;
    margin: -32px -32px 24px -32px;
    background: linear-gradient(135deg, var(--success), #34d399);
    border-radius: 16px 16px 0 0;
}

.completion-icon {
    font-size: 2rem;
    animation: bounce 1s ease infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.completion-text {
    font-size: 1.4rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Compact banner — collapses after user scrolls down */
.completion-banner.banner-compact {
    padding: 6px 24px;
    margin-bottom: 12px;
    transition: padding 0.3s ease, margin 0.3s ease;
}

.completion-banner.banner-compact .completion-icon {
    font-size: 1.2rem;
    animation: none;
}

.completion-banner.banner-compact .completion-text {
    font-size: 0.9rem;
}

.success-header {
    border-bottom-color: var(--success);
}

.success-header h2 {
    color: var(--success);
}

.success-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
    margin-top: 24px;
}

/* Essay Panel (Left Side) — flows naturally, parent modal scrolls */
.success-essay-panel {
    padding-right: 16px;
}

/* Scrollbar styling for the modal container */
.success-modal-content::-webkit-scrollbar {
    width: 8px;
}

.success-modal-content::-webkit-scrollbar-track {
    background: var(--border);
    border-radius: 4px;
}

.success-modal-content::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 4px;
}

/* Essay Section Styling */
.essay-section {
    padding: 16px 20px;
    margin-bottom: 12px;
    border-radius: 12px;
    background: var(--bg-secondary);
    border-left: 4px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.essay-section:hover {
    background: rgba(79, 70, 229, 0.08);
}

.essay-section.highlighted {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.2);
    border-left-color: var(--accent);
    background: rgba(79, 70, 229, 0.1);
}

.essay-section-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-primary);
    white-space: pre-wrap;  /* Preserve paragraph breaks from \n\n */
}

/* Revision step paragraph formatting */
.revision-paragraph {
    margin-bottom: 16px;
    padding-left: 0;
    text-indent: 2em;
}

.revision-paragraph:last-child {
    margin-bottom: 0;
}

.revision-para-label {
    font-weight: 600;
    color: var(--accent);
    text-indent: 0;
    display: block;
    margin-bottom: 4px;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* v2.0 Paragraph-based Essay Display */
.essay-paragraph-section {
    padding: 20px 24px;
    margin-bottom: 20px;
    border-radius: 12px;
    background: var(--bg-secondary);
    border-left: 4px solid var(--accent);
    transition: all 0.3s ease;
}

.essay-paragraph-section:last-child {
    margin-bottom: 0;
}

.essay-paragraph-section:hover {
    background: rgba(79, 70, 229, 0.08);
    transform: translateX(4px);
}

.paragraph-label {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.essay-paragraph {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-primary);
    text-indent: 2em;
}

/* Scores Panel (Right Side) */
.success-scores-panel {
    position: sticky;
    top: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Final Grade Display */
.final-grade-display {
    background: var(--cat-gradient, linear-gradient(135deg, var(--accent), #8b5cf6));
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    color: white;
    box-shadow: 0 8px 32px rgba(var(--cat-rgb, var(--accent-rgb)), 0.3);
}

.grade-label {
    display: block;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
    margin-bottom: 8px;
}

.grade-value {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

/* Step Scores List — flows naturally, parent modal scrolls */
.step-scores-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-right: 8px;
}

.step-score-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 10px;
    border-left: 4px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.step-score-item:hover {
    background: rgba(79, 70, 229, 0.08);
}

.step-score-item.highlighted {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.2);
    border-left-color: var(--accent);
    background: rgba(79, 70, 229, 0.1);
}

.step-score-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.step-score-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.step-score-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.step-score-value {
    font-size: 1.2rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 8px;
    min-width: 50px;
    text-align: center;
}

/* Score Color Coding */
.step-score-value.score-5 {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.step-score-value.score-4 {
    background: rgba(52, 211, 153, 0.15);
    color: #34d399;
}

.step-score-value.score-3 {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.step-score-value.score-2 {
    background: rgba(249, 115, 22, 0.15);
    color: #f97316;
}

.step-score-value.score-1 {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

/* Score Section Headers */
.score-section-header {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    padding: 8px 0 4px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 8px;
}

.score-section-header .weight-label {
    font-weight: 400;
    opacity: 0.7;
}

/* Conventions Score Display */
.conventions-score-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 10px;
    border-left: 4px solid var(--accent);
}

.conventions-score-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.conventions-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.conventions-sublabel {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.conventions-score-value {
    font-size: 1.1rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 8px;
    min-width: 60px;
    text-align: center;
}

.conventions-score-value.score-good {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.conventions-score-value.score-ok {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.conventions-score-value.score-low {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

/* Conventions Deductions */
.conventions-deductions {
    margin-top: 8px;
    padding: 8px 12px;
    background: rgba(239, 68, 68, 0.05);
    border-radius: 8px;
    border-left: 3px solid rgba(239, 68, 68, 0.3);
}

.deduction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    font-size: 0.85rem;
}

.deduction-category {
    color: var(--text-secondary);
}

.deduction-points {
    color: #ef4444;
    font-weight: 600;
}

/* Conventions Summary */
.conventions-summary {
    margin-top: 8px;
    padding: 8px 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-radius: 8px;
    font-style: italic;
}

/* Return to Dashboard Button */
.return-dashboard-btn {
    margin-top: 16px;
    width: 100%;
}

/* Responsive Design for Success Modal */
@media (max-width: 900px) {
    .success-modal-content {
        padding: 16px;
        max-height: 100vh;
        border-radius: 0;
        width: 100%;
    }

    .completion-banner {
        margin: -16px -16px 16px -16px;
        border-radius: 0;
    }

    .success-layout {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .success-scores-panel {
        position: relative;
        order: -1;
    }

    .final-grade-display {
        padding: 16px;
    }

    .grade-value {
        font-size: 2rem;
    }

    .step-scores-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px;
    }

    .step-score-item {
        flex: 0 0 auto;
        padding: 6px 12px;
        font-size: 0.8rem;
    }
}

/* ===== Growth Tracking & Comparison View ===== */

/* Growth Summary Banner */
.growth-banner {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(79, 70, 229, 0.1));
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 12px;
    padding: 16px 24px;
    margin-top: 16px;
}

.growth-summary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.growth-item {
    text-align: center;
    min-width: 80px;
}

.growth-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.growth-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.growth-arrow {
    font-size: 1.5rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

.growth-positive {
    color: var(--success) !important;
}

.growth-negative {
    color: var(--danger) !important;
}

.growth-points-item .growth-value {
    background: rgba(16, 185, 129, 0.15);
    padding: 4px 12px;
    border-radius: 8px;
}

.growth-points-item .growth-value.growth-negative {
    background: rgba(239, 68, 68, 0.15);
}

/* View Toggle */
.view-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.comparison-toggle-btns {
    display: flex;
    gap: 8px;
    padding: 4px;
    background: var(--bg-secondary);
    border-radius: 10px;
}

.comparison-toggle-btns.hidden {
    display: none;
}

.view-toggle-btn {
    padding: 8px 20px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.view-toggle-btn:hover {
    background: rgba(79, 70, 229, 0.1);
    color: var(--text-primary);
}

.view-toggle-btn.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

/* Comparison Layout */
.comparison-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 24px;
}

.comparison-column {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.comparison-column.original-column {
    border: 2px solid rgba(148, 163, 184, 0.3);
}

.comparison-column.final-column {
    border: 2px solid rgba(16, 185, 129, 0.3);
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.comparison-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.comparison-grade {
    display: flex;
    align-items: center;
    gap: 8px;
}

.comparison-grade .grade-label {
    display: inline;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.comparison-grade .grade-value {
    display: inline;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent);
}

.final-column .comparison-grade .grade-value {
    color: var(--success);
}

/* Comparison Essay Panel — constrained height for sync scrolling side-by-side */
.comparison-essay-panel {
    max-height: 50vh;
    overflow-y: auto;
    padding-right: 8px;
    margin-bottom: 16px;
    flex: 1;
}

/* Comparison scrollbar — kept for potential future per-panel scroll on very long essays */
.comparison-essay-panel::-webkit-scrollbar {
    width: 6px;
}

.comparison-essay-panel::-webkit-scrollbar-track {
    background: var(--border);
    border-radius: 3px;
}

.comparison-essay-panel::-webkit-scrollbar-thumb {
    background: var(--text-secondary);
    border-radius: 3px;
    opacity: 0.5;
}

.comparison-section {
    margin-bottom: 12px;
    padding: 12px;
    background: var(--glass-bg);
    border-radius: 8px;
}

.comparison-step-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.comparison-section .essay-section-content {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Comparison Scores List */
.comparison-scores-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.comparison-score-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--glass-bg);
    border-radius: 6px;
    font-size: 0.85rem;
}

.comparison-score-title {
    color: var(--text-secondary);
}

.comparison-score-value {
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    min-width: 36px;
    text-align: center;
}

/* Score color coding for comparison */
.comparison-score-value.score-5 {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.comparison-score-value.score-4 {
    background: rgba(52, 211, 153, 0.15);
    color: #34d399;
}

.comparison-score-value.score-3 {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.comparison-score-value.score-2 {
    background: rgba(249, 115, 22, 0.15);
    color: #f97316;
}

.comparison-score-value.score-1 {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

/* Score Improved Indicator */
.score-improved {
    background: rgba(16, 185, 129, 0.08) !important;
}

.improvement-indicator {
    font-size: 0.7rem;
    color: var(--success);
    margin-left: 4px;
    font-weight: 500;
}

/* Comparison Actions */
.comparison-actions {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.comparison-actions .return-dashboard-btn {
    width: auto;
    min-width: 200px;
}

/* Responsive Design for Comparison View */
@media (max-width: 900px) {
    .comparison-layout {
        grid-template-columns: 1fr;
    }

    .growth-summary {
        gap: 16px;
    }

    .growth-item {
        min-width: 60px;
    }

    .growth-value {
        font-size: 1.2rem;
    }

    .growth-arrow {
        display: none;
    }

    .view-toggle {
        flex-direction: column;
        width: 100%;
        gap: 8px;
    }

    .comparison-toggle-btns {
        width: 100%;
        flex-direction: column;
    }

    .view-toggle-btn {
        width: 100%;
    }

    .view-whole-essay-btn {
        width: 100%;
        justify-content: center;
    }

    .comparison-essay-panel {
        max-height: none;
        overflow-y: visible;
    }
}

/* ===== Self-Assessment Modal ===== */

.self-assessment-modal-content {
    max-width: 700px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 0;
}

.self-assessment-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    border-radius: 16px 16px 0 0;
}

.assessment-icon {
    font-size: 2rem;
}

.assessment-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.assessment-instructions {
    padding: 20px 28px 12px;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: center;
}

#selfAssessmentForm {
    padding: 8px 28px 28px;
}

.assessment-category {
    margin-bottom: 16px;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

.assessment-category.answered {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.05);
}

.assessment-category.unanswered {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.05);
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

.category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.category-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--accent);
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: 50%;
}

.category-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.assessment-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.assessment-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.assessment-option:hover {
    background: rgba(79, 70, 229, 0.1);
    border-color: var(--accent);
    transform: translateX(4px);
}

.assessment-option input[type="radio"] {
    display: none;
}

.option-indicator {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-radius: 50%;
    transition: all 0.2s ease;
    flex-shrink: 0;
    position: relative;
}

.assessment-option input[type="radio"]:checked + .option-indicator {
    border-color: var(--success);
    background: var(--success);
}

.assessment-option input[type="radio"]:checked + .option-indicator::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.assessment-option input[type="radio"]:checked ~ .option-text {
    color: var(--text-primary);
    font-weight: 500;
}

.option-text {
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.validation-message {
    padding: 12px 16px;
    margin: 16px 0;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    border-radius: 8px;
    color: var(--danger);
    font-weight: 500;
    text-align: center;
}

.assessment-actions {
    margin-top: 24px;
    display: flex;
    justify-content: center;
}

.assessment-submit-btn {
    padding: 14px 32px;
    font-size: 1.1rem;
    min-width: 280px;
}

/* Responsive adjustments for self-assessment modal */
@media (max-width: 600px) {
    .self-assessment-modal-content {
        max-width: 100%;
        width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }

    .self-assessment-banner {
        border-radius: 0;
        padding: 16px 20px;
    }

    .assessment-title {
        font-size: 1.2rem;
    }

    .assessment-instructions {
        padding: 16px 20px 8px;
        font-size: 0.9rem;
    }

    #selfAssessmentForm {
        padding: 8px 16px 20px;
    }

    .assessment-category {
        padding: 14px 16px;
    }

    .category-title {
        font-size: 1rem;
    }

    .assessment-option {
        padding: 10px 14px;
    }

    .option-text {
        font-size: 0.9rem;
    }

    .assessment-submit-btn {
        width: 100%;
        min-width: unset;
    }
}

/* ===== Polished Essay Modal ===== */

/* View Whole Essay Button */
.view-whole-essay-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    margin-left: auto;
}

.view-whole-essay-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.view-whole-essay-btn .btn-icon {
    font-size: 1.1rem;
}

/* Polished Essay Container */
#polishedEssayModal .modal-overlay {
    background: rgba(0, 0, 0, 0.7);
}

.polished-essay-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1001;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 40px 20px;
    overflow-y: auto;
}

/* Paper Effect */
.polished-essay-paper {
    position: relative;
    width: 100%;
    max-width: 850px;
    background: #fffef8;
    border-radius: 4px;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.05),
        0 4px 24px rgba(0, 0, 0, 0.15),
        0 12px 48px rgba(0, 0, 0, 0.1);
    padding: 60px 80px;
    font-family: 'Georgia', 'Times New Roman', serif;
    color: #2c2c2c;
    margin: auto 0;
    flex-shrink: 0;
}

/* Subtle paper texture */
.polished-essay-paper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 31px,
            rgba(0, 0, 0, 0.03) 31px,
            rgba(0, 0, 0, 0.03) 32px
        );
    pointer-events: none;
    border-radius: 4px;
}

/* Close Button */
.polished-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    color: #666;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10;
}

.polished-close-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #333;
}

/* MLA Header Block (left-aligned, double-spaced) */
.mla-header {
    margin-bottom: 0;
}

.mla-header-line {
    font-family: 'Times New Roman', Times, serif;
    font-size: 12pt;
    line-height: 2;
    color: #2c2c2c;
    margin: 0;
}

/* MLA Title (centered, same font/size as body, not bold) */
.mla-title-block {
    text-align: center;
    margin-bottom: 0;
}

.mla-title {
    font-family: 'Times New Roman', Times, serif;
    font-size: 12pt;
    font-weight: 400;
    color: #2c2c2c;
    line-height: 2;
    margin: 0;
}

/* MLA Paper overrides */
.mla-paper {
    font-family: 'Times New Roman', Times, serif;
    font-size: 12pt;
    padding: 1in;
    max-width: 8.5in;
    line-height: 2;
}

/* Essay Body */
.polished-body {
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.mla-body {
    margin-bottom: 24px;
}

.polished-paragraph {
    text-indent: 0.5in;
    font-family: 'Times New Roman', Times, serif;
    font-size: 12pt;
    line-height: 2;
    margin: 0;
    text-align: left;
    color: #2c2c2c;
}

.polished-paragraph + .polished-paragraph {
    margin-top: 0;
}

/* Essay Footer */
.polished-footer {
    display: flex;
    justify-content: flex-end;
    padding-top: 24px;
    border-top: 1px solid #e8e6df;
    margin-bottom: 24px;
}

/* Polished essay modal grade badge - more specific selector to avoid conflicts */
.polished-footer .grade-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 24px;
    background: linear-gradient(135deg, #f7f6f3 0%, #efe9dc 100%);
    border: 1px solid #d4d0c8;
    border-radius: 8px;
}

.polished-footer .grade-badge-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #555;
    margin-bottom: 4px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.polished-footer .grade-badge-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #4f46e5;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Action Buttons */
.polished-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding-top: 16px;
}

.download-essay-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: #4f46e5;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
    position: relative;
}

.download-essay-btn:hover:not(:disabled) {
    background: #4338ca;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.download-essay-btn:disabled {
    background: #9ca3af;
    cursor: wait;
    box-shadow: none;
    transform: none;
}

.download-essay-btn .btn-icon {
    font-size: 1.2rem;
}

/* Print Essay Button */
.print-essay-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: transparent;
    color: #4f46e5;
    border: 2px solid #4f46e5;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.print-essay-btn:hover {
    background: rgba(79, 70, 229, 0.08);
}

/* No-print utility */
.no-print {
    /* visible on screen */
}

/* MLA Print Stylesheet */
@media print {
    /* Hide everything except the MLA paper */
    body * {
        visibility: hidden;
    }

    .polished-essay-container,
    .polished-essay-container * {
        visibility: visible;
    }

    .polished-essay-container {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        padding: 0;
        overflow: visible;
    }

    .polished-essay-paper.mla-paper {
        box-shadow: none;
        border-radius: 0;
        max-width: none;
        width: 100%;
        padding: 1in;
        margin: 0;
        background: white;
    }

    .polished-essay-paper.mla-paper::before {
        display: none;
    }

    .no-print {
        display: none !important;
    }

    .mla-header-line,
    .mla-title,
    .polished-paragraph {
        font-family: 'Times New Roman', Times, serif;
        font-size: 12pt;
        line-height: 2;
        color: black;
    }

    .polished-paragraph {
        text-indent: 0.5in;
        orphans: 2;
        widows: 2;
    }

    /* MLA essay modal on teacher page */
    #mlaEssayModal .polished-essay-container,
    #mlaEssayModal .polished-essay-container * {
        visibility: visible;
    }
}

/* Dark mode adjustments */
body.dark-mode .polished-essay-paper {
    background: #faf9f5;
}

body.dark-mode .polished-close-btn {
    color: #555;
}

/* Responsive */
@media (max-width: 768px) {
    .polished-essay-container {
        padding: 20px 10px;
    }

    .polished-essay-paper {
        padding: 40px 24px;
        max-width: 100%;
    }

    .polished-essay-paper.mla-paper {
        padding: 24px 20px;
    }

    .mla-title {
        font-size: 11pt;
    }

    .mla-header-line {
        font-size: 11pt;
    }

    .polished-paragraph {
        font-size: 11pt;
        line-height: 1.8;
    }

    .polished-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .view-whole-essay-btn {
        width: 100%;
        justify-content: center;
        margin-left: 0;
        margin-top: 8px;
    }

    .view-toggle {
        flex-wrap: wrap;
    }
}

/* ===== TEXT-TO-SPEECH ===== */
.tts-btn {
    padding: 6px 10px;
    background: rgba(var(--accent-rgb), 0.08);
    border: 1px solid rgba(var(--accent-rgb), 0.2);
    border-radius: 6px;
    color: var(--accent, #667eea);
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tts-btn:hover {
    background: rgba(var(--accent-rgb), 0.15);
}

.tts-btn.tts-active {
    background: var(--accent, #667eea);
    color: white;
    border-color: var(--accent);
}

.tts-btn-small {
    padding: 4px 8px;
    font-size: 0.72rem;
}

.tts-word-active {
    background: rgba(var(--accent-rgb), 0.25);
    border-radius: 2px;
    transition: background 0.1s;
}

.tts-control-bar {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    z-index: 10005;
    opacity: 0;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.tts-control-bar.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.tts-ctrl-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent, #667eea);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

.tts-ctrl-btn:hover {
    background: rgba(var(--accent-rgb), 0.2);
}

.tts-stop-btn {
    background: rgba(var(--danger-rgb), 0.1);
    color: var(--danger, #ef4444);
}

.tts-stop-btn:hover {
    background: rgba(var(--danger-rgb), 0.2);
}

.tts-speed-group {
    display: flex;
    gap: 2px;
    background: rgba(var(--accent-rgb), 0.06);
    border-radius: 6px;
    padding: 2px;
}

.tts-speed-btn {
    padding: 4px 8px;
    border: none;
    background: none;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.tts-speed-btn.active {
    background: var(--accent, #667eea);
    color: white;
}

.tts-speed-btn:hover:not(.active) {
    color: var(--text-primary);
}

.tts-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}