/* ═══════════════════════════════════════════════════════════════
   ISABEAU GED TUTOR — Design System
   ═══════════════════════════════════════════════════════════════ */

:root {
    --bg: #0f0f1a;
    --bg-card: #1a1a2e;
    --bg-surface: #16213e;
    --bg-elevated: #1f2b47;
    --text: #e8e8f0;
    --text-secondary: #9a9ab0;
    --text-muted: #6b6b80;
    --accent: #a855f7;
    --accent-light: #c084fc;
    --accent-dark: #7c3aed;
    --science: #27ae60;
    --math: #2980b9;
    --social: #8e44ad;
    --success: #27ae60;
    --warning: #f39c12;
    --error: #e74c3c;
    --correct: #2ecc71;
    --wrong: #e74c3c;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --transition: all 0.25s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

a { color: var(--accent-light); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Buttons ── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(168,85,247,0.3);
}
.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168,85,247,0.4);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text);
    border: 1px solid rgba(255,255,255,0.1);
}
.btn-secondary:hover { background: var(--bg-surface); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover { color: var(--text); }

.btn-large {
    padding: 14px 32px;
    font-size: 16px;
    border-radius: 14px;
}

/* ═══ SETUP SCREEN ═══ */

.setup-container {
    max-width: 640px;
    margin: 0 auto;
    padding: 60px 24px;
    text-align: center;
}

.setup-hero { margin-bottom: 40px; }

.setup-icon {
    font-size: 64px;
    margin-bottom: 16px;
    display: block;
}

.setup-hero h1 {
    font-size: 42px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--accent-light), #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.setup-subtitle {
    font-size: 18px;
    color: var(--text);
    margin-bottom: 12px;
}

.setup-detail {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.upload-zone {
    border: 2px dashed rgba(168,85,247,0.3);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    margin-bottom: 20px;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(168,85,247,0.03);
}
.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(168,85,247,0.08);
}

.upload-icon { font-size: 40px; margin-bottom: 12px; }
.upload-text { font-size: 16px; font-weight: 600; }
.upload-hint { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

.uploaded-files {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.uploaded-file {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid rgba(39,174,96,0.3);
}
.file-icon { font-size: 20px; }
.file-name { flex: 1; text-align: left; font-size: 14px; }
.file-check { color: var(--success); font-weight: 700; }

.setup-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.setup-success {
    font-size: 18px;
    font-weight: 700;
    color: var(--success);
}

.setup-error {
    font-size: 14px;
    color: var(--error);
}

.setup-footer {
    margin-top: 40px;
    color: var(--text-muted);
    font-size: 14px;
}

/* Spinners */
.status-spinner, .loading-spinner {
    width: 24px; height: 24px;
    border: 3px solid rgba(168,85,247,0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
.loading-spinner { width: 40px; height: 40px; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ═══ DASHBOARD ═══ */

.dash-header {
    display: flex;
    align-items: center;
    padding: 20px 32px;
    background: var(--bg-card);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.dash-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-right: auto;
}
.brand-icon { font-size: 24px; }
.brand-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-light), #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.dash-greeting {
    font-size: 15px;
    color: var(--text-secondary);
    margin-right: 20px;
}

.dash-streak {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--warning);
}
.streak-fire { font-size: 18px; }

.dash-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 24px;
}

.progress-overview h2 {
    font-size: 24px;
    margin-bottom: 20px;
}

.topic-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 40px;
}

.topic-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.05);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}
.topic-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.topic-card.current { border-color: var(--accent); }
.topic-card.complete { border-color: var(--success); }
.topic-card.locked { opacity: 0.5; cursor: default; }
.topic-card.locked:hover { transform: none; }

.topic-icon { font-size: 36px; }

.topic-info { flex: 1; }
.topic-info h3 { font-size: 18px; margin-bottom: 8px; }

.topic-progress-bar {
    height: 8px;
    background: rgba(255,255,255,0.08);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 6px;
}
.topic-progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
}
.topic-progress-text {
    font-size: 13px;
    color: var(--text-secondary);
}

.topic-badge {
    background: var(--accent);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.topic-lock {
    font-size: 20px;
    position: absolute;
    right: 20px;
}

/* Today Card */
.today-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.05);
}

.today-ready h2 {
    font-size: 24px;
    margin-bottom: 8px;
}
.today-topic {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 16px;
}

.today-complete h2 {
    font-size: 32px;
    margin-bottom: 12px;
}

/* Achievements */
.achievements-section {
    margin-top: 40px;
}
.achievements-section h3 {
    font-size: 18px;
    margin-bottom: 16px;
}
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 12px;
}
.achievement {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.05);
}
.achievement-icon { font-size: 28px; }
.achievement strong { display: block; font-size: 14px; }
.achievement p { font-size: 12px; color: var(--text-secondary); margin: 2px 0 0; }

.new-achievement {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: rgba(168,85,247,0.1);
    border-radius: var(--radius);
    border: 1px solid var(--accent);
    margin-bottom: 8px;
    animation: achievePop 0.5s ease;
}

@keyframes achievePop {
    0% { transform: scale(0.8); opacity: 0; }
    60% { transform: scale(1.05); }
    100% { transform: scale(1); opacity: 1; }
}

/* ═══ LESSON SCREEN ═══ */

.lesson-layout {
    display: flex;
    min-height: 100vh;
    position: relative;
}

.lesson-main {
    flex: 1;
    padding: 0;
}

/* Hero Header */
.hero-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg) 100%);
    padding: 12px 24px 16px;
    border-bottom: 2px solid var(--topic-color, var(--accent));
}

.hero-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.hero-identity {
    display: flex;
    align-items: center;
    gap: 10px;
}

.hero-avatar-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    background: linear-gradient(135deg, var(--accent-dark), var(--accent));
    border: 2px solid var(--topic-color, var(--accent));
}

.hero-name-block {
    display: flex;
    flex-direction: column;
}

.hero-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-light), #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
}

.hero-streak {
    font-size: 16px;
    font-weight: 700;
    color: var(--warning);
}

.hero-lesson-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.hero-topic-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-lesson-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hero-bars {
    display: flex;
    gap: 12px;
    margin-bottom: 8px;
}

.hero-bar {
    flex: 1;
}

.hero-bar-label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 3px;
    display: block;
}

.hero-powerups {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.hero-pu {
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 2px;
}
.hero-pu small {
    font-size: 11px;
    font-weight: 700;
    color: var(--accent-light);
}
.hero-pu.empty {
    opacity: 0.25;
}

/* Legacy lesson-header (still used by quiz/exam screens) */
.lesson-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg);
    padding: 16px 32px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.lesson-title {
    flex: 1;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 16px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lesson-progress-bar {
    width: 200px;
    height: 6px;
    background: rgba(255,255,255,0.08);
    border-radius: 3px;
    overflow: hidden;
}
.lesson-progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.5s ease;
}

.lesson-view {
    padding: 32px;
    max-width: 800px;
    margin: 0 auto;
}

/* Reading */
.section-counter {
    font-size: 13px;
    color: var(--accent-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.section-heading {
    font-size: 28px;
    margin-bottom: 24px;
    color: var(--text);
}

/* Lesson Intro */
.lesson-intro {
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.intro-quote {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 24px;
    background: linear-gradient(135deg, rgba(168,85,247,0.08), rgba(244,114,182,0.05));
    border-radius: var(--radius);
    border-left: 3px solid var(--accent);
}
.quote-icon { font-size: 28px; flex-shrink: 0; }
.intro-quote blockquote {
    font-size: 17px;
    font-style: italic;
    line-height: 1.6;
    color: var(--text);
}
.intro-quote cite {
    display: block;
    margin-top: 8px;
    font-size: 13px;
    font-style: normal;
    color: var(--accent-light);
}

.intro-funny {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 18px 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.05);
}
.funny-icon { font-size: 24px; flex-shrink: 0; }
.intro-funny p { font-size: 15px; line-height: 1.6; }
.dad-joke-label {
    display: inline-block;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--warning);
    margin-bottom: 4px;
}

.intro-summary {
    padding: 20px;
    background: var(--bg-surface);
    border-radius: var(--radius);
}
.intro-summary h3 {
    font-size: 14px;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}
.intro-summary p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Easter Eggs */
.easter-egg-word {
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}
.easter-egg-word:hover {
    color: var(--accent-light);
    text-shadow: 0 0 12px rgba(168,85,247,0.4);
}

.easter-egg-popup {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.egg-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    max-width: 400px;
    border: 2px solid var(--accent);
    box-shadow: 0 0 40px rgba(168,85,247,0.3);
    animation: popIn 0.4s ease;
}
@keyframes popIn {
    0% { transform: scale(0.5); opacity: 0; }
    70% { transform: scale(1.05); }
    100% { transform: scale(1); opacity: 1; }
}
.egg-icon { font-size: 56px; margin-bottom: 12px; }
.egg-content h3 { font-size: 22px; margin-bottom: 8px; color: var(--accent-light); }
.egg-content p { color: var(--text-secondary); font-size: 15px; line-height: 1.6; margin-bottom: 8px; }
.egg-content .btn { margin-top: 16px; }

.konami-content {
    border-color: var(--warning);
    box-shadow: 0 0 60px rgba(243,156,18,0.3);
}
.konami-content h3 { color: var(--warning); }

/* Anime Reward */
.anime-reward {
    margin: 32px 0;
    padding: 28px;
    background: linear-gradient(135deg, rgba(168,85,247,0.1), rgba(244,114,182,0.08));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(168,85,247,0.2);
    text-align: center;
}
.anime-reward h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--accent-light);
}
.anime-image-container {
    margin: 16px 0;
}
.anime-image {
    max-width: 100%;
    max-height: 350px;
    border-radius: var(--radius);
    object-fit: contain;
}
.anime-reward h4 {
    font-size: 18px;
    margin: 12px 0 8px;
    color: var(--text);
}
.anime-reward p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}
.anime-fact {
    margin-top: 8px;
    font-style: italic;
}

.section-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
}
.section-content p { margin-bottom: 16px; }
.section-content strong { color: var(--accent-light); }
.section-content ul, .section-content ol {
    margin: 12px 0 16px 24px;
}
.section-content li { margin-bottom: 8px; }

.key-terms {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    margin: 24px 0;
    border-left: 3px solid var(--accent);
}
.key-terms h4 {
    font-size: 14px;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}
.key-term {
    font-size: 14px;
    margin-bottom: 8px;
    padding-left: 8px;
}
.key-term strong { color: var(--text); }

.visual-container {
    margin: 24px 0;
    text-align: center;
}
.visual-image {
    max-width: 100%;
    max-height: 500px;
    border-radius: var(--radius);
    background: #fff;
    padding: 12px;
    object-fit: contain;
}
.visual-caption {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
    font-style: italic;
}

.visual-placeholder {
    background: var(--bg-surface);
    border-radius: var(--radius);
    padding: 32px;
    margin: 24px 0;
    text-align: center;
    border: 1px dashed rgba(255,255,255,0.1);
}
.visual-icon { font-size: 36px; margin-bottom: 12px; }
.visual-desc { font-size: 14px; color: var(--text-secondary); }
.visual-alt { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.did-you-know {
    display: flex;
    gap: 14px;
    background: linear-gradient(135deg, rgba(168,85,247,0.08), rgba(244,114,182,0.08));
    border-radius: var(--radius);
    padding: 20px;
    margin: 24px 0;
    border: 1px solid rgba(168,85,247,0.15);
}
.dyk-icon { font-size: 24px; flex-shrink: 0; }
.did-you-know strong {
    display: block;
    font-size: 13px;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}
.did-you-know p {
    font-size: 14px;
    color: var(--text);
    line-height: 1.6;
}

.reading-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Quiz */
.quiz-header, .exam-header {
    text-align: center;
    margin-bottom: 32px;
}
.quiz-header h2, .exam-header h2 {
    font-size: 24px;
    margin-bottom: 8px;
}
.quiz-header p, .exam-header p {
    color: var(--text-secondary);
    font-size: 15px;
}
.quiz-header.final h2 { color: var(--accent-light); }

.exam-progress {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.quiz-question {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 16px;
    border: 1px solid rgba(255,255,255,0.05);
}

.question-number {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.question-passage {
    background: var(--bg-surface);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
    color: var(--text-secondary);
    border-left: 3px solid var(--accent);
    line-height: 1.7;
}

.question-text {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 16px;
    line-height: 1.5;
}

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

.option-label {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-surface);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}
.option-label:hover { background: var(--bg-elevated); }
.option-label.selected {
    border-color: var(--accent);
    background: rgba(168,85,247,0.08);
}
.option-label input[type="radio"] { display: none; }
.option-text { font-size: 14px; line-height: 1.5; }

/* Review */
.review-header {
    text-align: center;
    margin-bottom: 32px;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    border: 4px solid;
}
.score-circle.great { border-color: var(--success); background: rgba(39,174,96,0.1); }
.score-circle.passing { border-color: var(--accent); background: rgba(168,85,247,0.1); }
.score-circle.needs-work { border-color: var(--warning); background: rgba(243,156,18,0.1); }

.score-number {
    font-size: 36px;
    font-weight: 800;
    font-family: 'Space Grotesk', sans-serif;
}

.review-section-title {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 24px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.review-question {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 12px;
}
.review-question.missed { border-left: 3px solid var(--wrong); }
.review-question.correct { border-left: 3px solid var(--correct); opacity: 0.7; }

.review-question .question-text {
    font-size: 14px;
    margin-bottom: 12px;
}

.review-answer {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    margin-bottom: 4px;
    font-size: 14px;
}
.review-answer.wrong { background: rgba(231,76,60,0.1); color: var(--wrong); }
.review-answer.correct { background: rgba(39,174,96,0.1); color: var(--correct); }
.review-icon { font-weight: 700; }

.review-explanation {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-surface);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.review-actions {
    text-align: center;
    margin-top: 32px;
}

/* Celebration */
.celebration-container {
    text-align: center;
    padding: 40px 20px;
}

.celebration-content {
    max-width: 500px;
    margin: 0 auto;
}

.celebration-emoji {
    font-size: 72px;
    margin-bottom: 16px;
    animation: celebBounce 0.6s ease;
}

@keyframes celebBounce {
    0% { transform: scale(0); }
    60% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.celebration-content h1 {
    font-size: 36px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--accent-light), #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.celebration-score {
    font-size: 64px;
    font-weight: 900;
    font-family: 'Space Grotesk', sans-serif;
    color: var(--accent-light);
    margin: 16px 0;
}

.celebration-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.celebration-streak {
    font-size: 20px;
    font-weight: 700;
    color: var(--warning);
    margin: 16px 0;
}

.celebration-next {
    font-size: 14px;
    color: var(--text-muted);
    margin: 24px 0 16px !important;
}

.new-achievements {
    margin: 24px 0;
}

/* Loading */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 400px;
    gap: 16px;
}
.loading-container p {
    color: var(--text-secondary);
    font-size: 15px;
}

/* ═══ CHAT SIDEBAR ═══ */

.chat-sidebar {
    position: fixed;
    right: 0;
    top: 0;
    height: 100vh;
    z-index: 100;
}

.chat-toggle {
    position: fixed;
    right: 20px;
    bottom: 20px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 28px;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(168,85,247,0.4);
    transition: var(--transition);
    z-index: 101;
    font-size: 14px;
    font-weight: 600;
}
.chat-toggle:hover { transform: scale(1.05); }
.chat-toggle.hidden { display: none; }
.chat-toggle-icon { font-size: 18px; }

.chat-panel {
    width: 380px;
    height: 100vh;
    background: var(--bg-card);
    border-left: 1px solid rgba(255,255,255,0.08);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    position: relative;
}
.chat-panel.open {
    transform: translateX(0);
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.chat-header h3 {
    font-size: 16px;
}
.chat-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 18px;
    padding: 4px;
}
.chat-close:hover { color: var(--text); }

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-message {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    line-height: 1.6;
    max-width: 90%;
}
.chat-message.tutor {
    background: var(--bg-surface);
    align-self: flex-start;
}
.chat-message.user {
    background: rgba(168,85,247,0.15);
    align-self: flex-end;
    border: 1px solid rgba(168,85,247,0.2);
}
.chat-message p { margin: 0; }

.chat-input-area {
    padding: 12px 16px;
    border-top: 1px solid rgba(255,255,255,0.05);
    display: flex;
    gap: 8px;
}

#chat-input {
    flex: 1;
    background: var(--bg-surface);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    resize: none;
    outline: none;
}
#chat-input:focus { border-color: var(--accent); }

.chat-send {
    padding: 10px 16px;
}

/* ═══ CONFETTI ═══ */

#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999;
    display: none;
}

/* ═══ CHARACTER MOSAIC REVEAL ═══ */

.mosaic-section {
    margin-top: 40px;
}
.mosaic-section h3 {
    font-size: 18px;
    margin-bottom: 6px;
}
.mosaic-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.mosaic-container {
    position: relative;
    width: 100%;
    max-width: 360px;
    margin: 0 auto;
    aspect-ratio: 5/6;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 2px solid rgba(255,255,255,0.08);
}

.mosaic-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(10, 1fr);
    width: 100%;
    height: 100%;
    position: relative;
}

.mosaic-tile {
    position: relative;
    overflow: hidden;
    border: 0.5px solid rgba(15,15,26,0.6);
}

.mosaic-tile-inner {
    width: 100%;
    height: 100%;
    background-size: 600% 1000%;
    transition: all 0.6s ease;
}

.mosaic-tile.locked .mosaic-tile-inner {
    filter: brightness(0.15) blur(4px);
}

.mosaic-tile.revealed .mosaic-tile-inner {
    filter: none;
}

.mosaic-tile.just-revealed .mosaic-tile-inner {
    animation: tileReveal 1s ease forwards;
}

@keyframes tileReveal {
    0% { filter: brightness(0.15) blur(4px); transform: scale(1.1); }
    50% { filter: brightness(1.5) blur(0); transform: scale(1.05); }
    100% { filter: none; transform: scale(1); }
}

.mosaic-tile.locked::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(168,85,247,0.05);
}

.mosaic-counter {
    text-align: center;
    margin-top: 12px;
    font-size: 14px;
    color: var(--text-secondary);
}
.mosaic-counter strong {
    color: var(--accent-light);
    font-size: 18px;
}

/* Celebration mosaic */
.celebration-mosaic {
    max-width: 240px;
    margin: 20px auto;
}
.celebration-mosaic .mosaic-container {
    max-width: 240px;
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(168,85,247,0.2);
}

/* Final character reveal animation */
.final-reveal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10001;
}

.final-reveal-content {
    text-align: center;
    max-width: 500px;
}

.final-reveal-image {
    width: 360px;
    max-width: 90vw;
    aspect-ratio: 5/6;
    border-radius: var(--radius-lg);
    object-fit: cover;
    animation: finalReveal 3s ease forwards;
    box-shadow: 0 0 0 rgba(168,85,247,0);
}

@keyframes finalReveal {
    0% {
        filter: blur(20px) brightness(0.3);
        transform: scale(0.8);
        box-shadow: 0 0 0 rgba(168,85,247,0);
    }
    30% {
        filter: blur(10px) brightness(0.6);
        transform: scale(0.9);
    }
    60% {
        filter: blur(3px) brightness(1.2);
        transform: scale(1.02);
        box-shadow: 0 0 40px rgba(168,85,247,0.5);
    }
    80% {
        filter: blur(0) brightness(1.3);
        transform: scale(1.05);
        box-shadow: 0 0 80px rgba(168,85,247,0.6);
    }
    100% {
        filter: none;
        transform: scale(1);
        box-shadow: 0 0 60px rgba(168,85,247,0.4), 0 0 120px rgba(244,114,182,0.2);
    }
}

.final-reveal-title {
    margin-top: 24px;
    font-size: 36px;
    font-family: 'Space Grotesk', sans-serif;
    background: linear-gradient(135deg, var(--accent-light), #f472b6, var(--warning));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: titleGlow 2s ease 2s forwards;
    opacity: 0;
}

@keyframes titleGlow {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.final-reveal-sub {
    color: var(--text-secondary);
    font-size: 16px;
    margin-top: 12px;
    opacity: 0;
    animation: titleGlow 1.5s ease 3s forwards;
}

.final-reveal-close {
    margin-top: 24px;
    opacity: 0;
    animation: titleGlow 1s ease 4s forwards;
}

/* ═══ MINI-GAMES ═══ */

.minigame-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

.minigame-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 600px;
    width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    border: 2px solid var(--accent);
    box-shadow: 0 0 40px rgba(168,85,247,0.3);
    text-align: center;
}

.minigame-header h2 {
    font-size: 24px;
    margin-bottom: 6px;
    color: var(--accent-light);
}
.minigame-header p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.minigame-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}
.minigame-stats strong {
    color: var(--accent-light);
}

/* Memory Match */
.memory-grid {
    display: grid;
    gap: 8px;
    max-width: 500px;
    margin: 0 auto;
}

.memory-card {
    aspect-ratio: 1;
    perspective: 600px;
    cursor: pointer;
}

.card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.memory-card.flipped .card-inner,
.memory-card.matched .card-inner {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    padding: 8px;
    text-align: center;
    line-height: 1.3;
}

.card-front {
    background: var(--bg-elevated);
    color: var(--accent);
    font-size: 24px;
    border: 2px solid rgba(168,85,247,0.2);
}

.card-back {
    background: var(--bg-surface);
    color: var(--text);
    transform: rotateY(180deg);
    border: 2px solid rgba(168,85,247,0.3);
}
.card-back.front {
    background: linear-gradient(135deg, rgba(168,85,247,0.15), rgba(124,58,237,0.15));
    color: var(--accent-light);
}
.card-back.back {
    background: linear-gradient(135deg, rgba(39,174,96,0.15), rgba(46,204,113,0.15));
    color: var(--success);
    font-size: 12px;
}

.memory-card.matched .card-inner {
    opacity: 0.6;
}
.memory-card.matched {
    pointer-events: none;
}

/* Word Scramble */
.scramble-area {
    padding: 20px 0;
}

.scramble-hint {
    color: var(--text-secondary);
    font-size: 14px;
    font-style: italic;
    margin-bottom: 16px;
}

.scramble-letters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    margin-bottom: 20px;
}

.scramble-letter {
    width: 36px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border-radius: 6px;
    font-size: 20px;
    font-weight: 800;
    font-family: 'Space Grotesk', monospace;
    color: var(--accent-light);
    border: 1px solid rgba(168,85,247,0.2);
}

.scramble-input {
    width: 100%;
    max-width: 300px;
    padding: 12px 16px;
    background: var(--bg-surface);
    border: 2px solid rgba(168,85,247,0.3);
    border-radius: 8px;
    color: var(--text);
    font-family: 'Space Grotesk', monospace;
    font-size: 20px;
    font-weight: 700;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
    outline: none;
}
.scramble-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(168,85,247,0.2);
}

.scramble-feedback {
    margin-top: 12px;
    font-size: 16px;
    font-weight: 600;
    min-height: 24px;
}

/* Lightning Trivia */
.lightning-area {
    padding: 20px 0;
}

.lightning-question {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 20px;
    color: var(--text);
}

.lightning-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
    margin: 0 auto;
}

.lightning-btn {
    padding: 14px 20px;
    font-size: 15px;
    text-align: left;
    transition: all 0.15s ease;
}
.lightning-btn:hover {
    transform: translateX(4px);
    border-color: var(--accent);
}

.lightning-true { border-left: 3px solid var(--success); }
.lightning-false { border-left: 3px solid var(--error); }

.lightning-feedback {
    margin-top: 16px;
    font-size: 18px;
    font-weight: 700;
    min-height: 28px;
}

.timer-urgent {
    color: var(--error) !important;
    animation: timerPulse 0.5s ease infinite alternate;
}
@keyframes timerPulse {
    from { opacity: 1; }
    to { opacity: 0.4; }
}

/* ═══ RESPONSIVE ═══ */

@media (max-width: 768px) {
    .setup-hero h1 { font-size: 32px; }
    .dash-content { padding: 24px 16px; }
    .lesson-header { padding: 12px 16px; }
    .lesson-view { padding: 20px 16px; }
    .section-heading { font-size: 22px; }
    .quiz-question { padding: 16px; }
    .chat-panel { width: 100vw; }
    .lesson-progress-bar { width: 100px; }
    .celebration-score { font-size: 48px; }
}

@media (max-width: 480px) {
    .setup-container { padding: 32px 16px; }
    .setup-hero h1 { font-size: 28px; }
    .dash-header { padding: 12px 16px; flex-wrap: wrap; }
    .topic-card { padding: 14px 16px; }
    .topic-icon { font-size: 28px; }
}