@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@300;400;500;600;700&display=swap');

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== LIGHT MODE (default) ===== */
:root {
    /* Toned down global purples */
    --theme-primary: #5c6ac4;
    --theme-dark: #3730a3;
    
    --bg-gradient: linear-gradient(135deg, var(--theme-primary) 0%, var(--theme-dark) 100%);
    --container-bg: white;
    --container-shadow: 0 20px 60px rgba(0, 0, 0, 0.15); /* Softened shadow */
    --text-primary: #333;
    --text-secondary: #666;
    --text-muted: #999;
    --text-heading: var(--theme-primary);
    --card-bg: #f8f9fa;
    --card-hover-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --border-color: #e5e7eb;
    --input-border: #ddd;
    --input-bg: white;
    --input-text: #333;
    --nav-link-color: #374151;
    --nav-link-hover-bg: rgba(92,106,196,0.08);
    --session-bg: #f8f9fa;
    --stat-card-bg: #f8f9fa;
    --plant-container-bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --timer-ring-bg: #f0f0f0;
    --duration-btn-bg: white;
    --duration-btn-border: #e0e0e0;
    --popup-bg: white;
    --toast-bg: white;
    --success-color: #10b981; /* Softer green */
    --danger-bg: #fff5f5;
    --danger-border: #ef4444;
    --danger-text: #ef4444;
    --select-bg: white;
    --select-text: #333;
    
    /* Adjusted feature cards to be slightly less saturated */
    --feature-timer-bg: #5c6ac4;
    --feature-planner-bg: #6366f1;
    --feature-quiz-bg: #8b5cf6;
    --feature-city-bg: #4f46e5;
    --feature-flash-bg: #a855f7;
    --feature-mind-bg: #7c3aed;
}

/* ===== DARK MODE ===== */
body.dark-mode {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    --container-bg: #1e293b;
    --container-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-heading: #a78bfa;
    --card-bg: #334155;
    --card-hover-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    --border-color: #475569;
    --input-border: #475569;
    --input-bg: #334155;
    --input-text: #f8fafc;
    --nav-link-color: #cbd5e1;
    --nav-link-hover-bg: rgba(167,139,250,0.12);
    --session-bg: #334155;
    --stat-card-bg: #334155;
    --plant-container-bg: linear-gradient(135deg, #334155 0%, #1e293b 100%);
    --danger-bg: #2a1f24;
    --danger-border: #7f1d1d;
    --danger-text: #fca5a5;
    --danger-body: #e2e8f0;
    
    /* Dark mode feature card backgrounds */
    --feature-timer-bg: #4338ca;
    --feature-planner-bg: #4f46e5;
    --feature-quiz-bg: #6d28d9;
    --feature-city-bg: #3730a3;
    --feature-flash-bg: #7e22ce;
    --feature-mind-bg: #5b21b6;
}

/* ===== DARK MODE — QUIZ PAGE ===== */
body.dark-mode .quiz-card {
    background: linear-gradient(135deg, #2a2f45 0%, #232840 100%);
    border-color: #374151;
}
body.dark-mode .quiz-card h2 {
    color: #e2e8f0;
}

body.dark-mode .quiz-option {
    background: #2a2f45;
    border-color: #4b5563;
    color: #e2e8f0;
}
body.dark-mode .quiz-option:hover {
    border-color: #a78bfa;
    background: #2f3555;
}
body.dark-mode .quiz-option.selected {
    border-color: #a78bfa;
    background: #312e4a;
}
body.dark-mode .quiz-option.correct {
    border-color: #34d399;
    background: #1a3a2e;
    color: #d1fae5;
}
body.dark-mode .quiz-option.wrong {
    border-color: #f87171;
    background: #3b1f1f;
    color: #fecaca;
}

body.dark-mode .explanation-box {
    background: #1e2a3a;
    border-left-color: #a78bfa;
    color: #e2e8f0;
}
body.dark-mode .explanation-box h4 {
    color: #c4b5fd;
}

body.dark-mode .generate-section {
    background: #2d2514;
    border-color: #8b6914;
}
body.dark-mode .generate-section.premium {
    background: #1a2e1f;
    border-color: #34d399;
}
body.dark-mode .generate-section h3 {
    color: #e2e8f0;
}
body.dark-mode .generate-section input {
    background: #2a2f45;
    border-color: #4b5563;
    color: #e2e8f0;
}
body.dark-mode .generate-section input::placeholder {
    color: #64748b;
}

body.dark-mode .upgrade-cta {
    color: #fde68a;
}
body.dark-mode .generate-section p,
body.dark-mode .generate-section #generate-status,
body.dark-mode .quiz-locked-panel p,
body.dark-mode .pricing-card p,
body.dark-mode .pricing-card li,
body.dark-mode .compare td,
body.dark-mode .compare th,
body.dark-mode .promo-msg {
    color: #e2e8f0 !important;
}
body.dark-mode .pricing-card h2,
body.dark-mode .pricing-card .price,
body.dark-mode .quiz-locked-panel h2 {
    color: #f8fafc !important;
}
body.dark-mode .pricing-card .btn-secondary {
    color: #f8fafc !important;
    border-color: #64748b !important;
}
body.dark-mode .btn-upgrade-premium {
    color: #111827 !important;
}

body.dark-mode .score-bar {
    color: #94a3b8;
}

body.dark-mode .empty-quiz {
    color: #94a3b8;
}
body.dark-mode .empty-quiz a {
    color: #a78bfa;
}

body {
    font-family: 'Lexend', sans-serif;
    /* Do not use var(--bg-gradient) here if it forces purple */
    background: var(--app-bg, #f4f7f9);
    min-height: 100vh;
    color: var(--text-primary, #1e1e2f);
    transition: background 0.3s ease;
}

body .dark-mode {
    background: var(--bg-gradient);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--container-bg);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--container-shadow);
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

/* Global top navigation */
.nav-menu {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.nav-menu .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    background: transparent;
    color: var(--nav-link-color);
    text-decoration: none;
    font-weight: 700;
    border: 1px solid transparent;
    white-space: nowrap;
    transition: all 0.2s;
}

.nav-menu .nav-link:hover {
    background: var(--nav-link-hover-bg);
    color: var(--text-primary);
}

.nav-menu .nav-link.active {
    background: linear-gradient(135deg,#667eea 0%,#764ba2 100%);
    color: #fff;
    box-shadow: 0 8px 30px rgba(102,126,234,0.18);
}

.nav-menu .logout-link { font-weight: 600; }

/* Dashboard specific */
.dashboard-root {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--container-bg);
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--container-shadow);
    transition: background 0.3s, box-shadow 0.3s;
}

.dashboard-root header h1 {
    font-size: 2.4em;
}

.action-note {
    background: var(--card-bg);
    padding: 18px;
    border-radius: 12px;
    color: var(--text-primary);
    font-weight: 600;
    box-shadow: 0 8px 30px rgba(99,102,241,0.06);
}

/* Header */
header {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.logout-link:hover {
    color: #667eea;
    text-decoration: underline;
}

h1 {
    font-size: 2.5em;
    color: var(--text-heading);
    margin-bottom: 10px;
}

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

.back-link {
    display: inline-block;
    color: #667eea;
    text-decoration: none;
    margin-bottom: 20px;
    font-weight: 600;
}

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

/* ===== HERO SECTION ===== */
.hero-section {
    display: flex;
    gap: 30px;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.plant-showcase {
    flex: 0 0 auto;
    text-align: center;
    min-width: 140px;
}

.plant { margin-bottom: 15px; }

.plant-icon {
    font-size: 5em;
    display: inline-block;
    animation: plantGrow 0.5s ease-out;
    transition: font-size 0.3s ease;
}

@keyframes plantGrow {
    0% { transform: scale(0.5); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.plant-level {
    font-size: 1.3em;
    color: var(--text-heading);
    font-weight: 700;
    margin-bottom: 5px;
}

.plant-subtitle {
    font-size: 0.85em;
    color: var(--text-muted);
}

.quick-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    flex: 1;
    min-width: 280px;
}

.quick-stat {
    background: var(--card-bg);
    padding: 18px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

.quick-stat:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-hover-shadow);
}

.quick-stat-icon {
    font-size: 1.8em;
    margin-bottom: 8px;
}

.quick-stat-label {
    font-size: 0.85em;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.quick-stat-value {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--text-heading);
}

.quick-stat-unit {
    font-size: 0.75em;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== DASHBOARD FEATURES GRID ===== */
.dashboard-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.feature-card {
    border-radius: 16px;
    padding: 24px;
    color: white;
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 200px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    opacity: 0.1;
    transform: translate(30%, -30%);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.25);
}

.timer-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.planner-card {
    background: linear-gradient(135deg, #7b6fd4 0%, #6a4fc4 100%);
}

.quiz-card {
    background: linear-gradient(135deg, #8e6fd8 0%, #764ba2 100%);
}

.city-card {
    background: linear-gradient(135deg, #6c63d4 0%, #5a45b0 100%);
}

.flashcards-card {
    background: linear-gradient(135deg, #9b72cf 0%, #7e4bb2 100%);
}

.mindmap-card {
    background: linear-gradient(135deg, #7360cc 0%, #5f4baa 100%);
}

.feature-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.feature-header h3 {
    font-size: 1.3em;
    font-weight: 700;
    margin: 0;
}

.feature-icon {
    font-size: 1.5em;
    opacity: 0.8;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: translateX(4px);
}

.feature-desc {
    font-size: 0.95em;
    opacity: 0.95;
    margin-bottom: 16px;
    line-height: 1.4;
    flex-grow: 1;
    position: relative;
    z-index: 1;
}

.feature-btn {
    align-self: flex-start;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.25);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 0.9em;
    position: relative;
    z-index: 1;
}

.feature-btn:hover {
    background: rgba(255, 255, 255, 0.4);
    border-color: white;
    transform: translateX(2px);
}

/* ===== RECENT ACTIVITY ===== */
.recent-activity {
    margin-top: 40px;
}

.recent-activity h2 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 1.4em;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 16px;
    background: var(--session-bg);
    border-radius: 12px;
    transition: all 0.2s;
}

.activity-item:hover {
    background: var(--card-bg);
    transform: translateX(4px);
}

.activity-icon {
    font-size: 1.2em;
    min-width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.activity-info {
    flex: 1;
}

.activity-title {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.activity-time {
    color: var(--text-muted);
    font-size: 0.85em;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state p {
    font-size: 1.05em;
    font-weight: 500;
}

/* ===== PLANT DISPLAY (Legacy) ===== */
.plant-container {
    text-align: center;
    margin: 40px 0;
    padding: 30px;
    background: var(--plant-container-bg);
    border-radius: 15px;
}

.plant-level {
    font-size: 1.2em;
    color: var(--text-heading);
    font-weight: 600;
}

/* Stats Container */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.stat-card {
    background: var(--stat-card-bg);
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s, background 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-hover-shadow);
}

.stat-card h3 {
    font-size: 1em;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.stat-number {
    font-size: 2.5em;
    font-weight: bold;
    color: #667eea;
}

/* Recent Sessions */
.recent-sessions { margin: 40px 0; }

.recent-sessions h2 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 1.5em;
}

.recent-sessions ul { list-style: none; }

.recent-sessions li {
    background: var(--session-bg);
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.session-duration {
    font-weight: 600;
    color: #667eea;
    font-size: 1.1em;
}

.session-time {
    color: var(--text-muted);
    font-size: 0.9em;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 15px 40px;
    font-size: 1.05em;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    text-decoration: none;
    font-family: 'Lexend', sans-serif;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff !important;
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.action-container {
    text-align: center;
    margin-top: 40px;
}

/* Timer Page */
.timer-page { max-width: 600px; }

.timer-container {
    text-align: center;
    padding: 40px 0;
}

.timer-circle {
    position: relative;
    width: 280px;
    height: 280px;
    margin: 0 auto 40px;
}

.progress-ring { transform: rotate(-90deg); }

.progress-ring-bg {
    fill: none;
    stroke: var(--timer-ring-bg);
    stroke-width: 12;
}

.progress-ring-fill {
    fill: none;
    stroke: #667eea;
    stroke-width: 12;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.3s linear;
}

.timer-display {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

#timer-text {
    font-size: 3.5em;
    font-weight: bold;
    color: var(--text-primary);
    display: block;
}

.timer-label {
    color: var(--text-muted);
    margin-top: 10px;
    font-size: 1.1em;
}

/* Duration Selector */
.duration-selector {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
}

.duration-btn {
    padding: 12px 25px;
    border: 2px solid var(--duration-btn-border);
    background: var(--duration-btn-bg);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-family: 'Lexend', sans-serif;
    transition: all 0.3s;
}

.duration-btn:hover {
    border-color: #667eea;
    color: #667eea;
}

.duration-btn.active {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

/* Timer Controls */
.timer-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* Plant Preview */
.plant-preview {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: 10px;
    transition: background 0.3s;
}

.mini-plant { margin-top: 10px; }
.mini-plant .plant-icon { font-size: 2em; }

/* Success Toast */
.success-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--toast-bg);
    padding: 20px 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
    z-index: 1000;
    border-left: 4px solid #667eea;
}

.success-toast.show {
    opacity: 1;
    transform: translateX(0);
}

.success-toast h3 {
    margin-bottom: 5px;
    color: var(--text-primary);
}

.success-toast p { color: var(--text-secondary); }

/* Form inputs global dark mode */
body.dark-mode input,
body.dark-mode select,
body.dark-mode textarea {
    background: var(--input-bg) !important;
    color: var(--input-text) !important;
    border-color: var(--input-border) !important;
}

body.dark-mode input::placeholder { color: var(--text-muted); }

/* Responsive Design */
@media (max-width: 800px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .quick-stats-grid {
        width: 100%;
    }

    .dashboard-features {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .container { padding: 20px; }
    h1 { font-size: 2em; }
    .stats-container { grid-template-columns: 1fr; }
    .timer-circle { width: 220px; height: 220px; }
    #timer-text { font-size: 2.5em; }
}

/* Custom Duration Popup */
.custom-duration-popup {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.popup-content {
    background: var(--popup-bg);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    min-width: 300px;
    text-align: center;
    transition: background 0.3s;
}

.popup-content h3 {
    color: #667eea;
    margin-bottom: 20px;
}

.custom-input-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.custom-input-group input {
    width: 100px;
    padding: 10px;
    font-size: 1.2em;
    border: 2px solid #667eea;
    border-radius: 8px;
    text-align: center;
    background: var(--input-bg);
    color: var(--input-text);
}

.custom-input-group span {
    color: var(--text-secondary);
    font-size: 1.1em;
}

.popup-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.popup-buttons button { padding: 10px 20px; }

/* ===== MOBILE NAV ===== */
.nav-hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.6em;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 8px;
    color: var(--nav-link-color);
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    width: 100%;
}

@media (max-width: 640px) {
    .nav-hamburger { display: block; }

    .nav-links {
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        margin-top: 10px;
    }

    .nav-links.open { display: flex; }

    .nav-menu .nav-link {
        padding: 12px 16px;
        font-size: 1em;
    }

    .nav-menu .logout-link { margin-left: 0 !important; }

    .hero-section {
        flex-direction: column !important;
        align-items: center !important;
    }

    .hero-section > div:first-child { flex: unset !important; }

    .container, .dashboard-root {
        padding: 20px !important;
        border-radius: 12px !important;
    }

    body { padding: 10px !important; }
    h1 { font-size: 1.8em !important; }
    .stat-number { font-size: 1.8em !important; }
    .timer-circle { width: 220px !important; height: 220px !important; }
    .progress-ring { width: 220px !important; height: 220px !important; }
    #timer-text { font-size: 2.5em !important; }
    .duration-selector { flex-wrap: wrap; gap: 8px; }
    .duration-btn { padding: 10px 16px; font-size: 0.95em; }
    .dashboard-features { grid-template-columns: 1fr; }
}

/* ===== DARK MODE NAV FIX ===== */
body.dark-mode .nav-menu .nav-link {
    color: var(--nav-link-color);
}

body.dark-mode .nav-menu .nav-link:hover {
    background: var(--nav-link-hover-bg);
    color: #e2e8f0;
}

body.dark-mode .nav-menu .nav-hamburger {
    color: var(--nav-link-color);
}

body.dark-mode .dashboard-root {
    background: var(--container-bg);
    box-shadow: var(--container-shadow);
}

body.dark-mode .dashboard-root header h1 {
    color: var(--text-heading);
}

body.dark-mode .feature-card {
    color: white;
}

body.dark-mode .feature-desc {
    color: rgba(255, 255, 255, 0.95);
}
/* ===== Shared contrast and accessibility fixes (#68) ===== */
:root {
    --panel-bg: var(--container-bg);
    --surface-bg: var(--card-bg);
    --surface-elevated: #ffffff;
    --link-color: var(--theme-primary);
    --locked-bg: #f3f4f6;
    --locked-text: #6b7280;
    --focus-ring: rgba(92,106,196,0.32);
    --danger-body: #7f1d1d;
}
body.dark-mode {
    --panel-bg: #1e293b;
    --surface-bg: #273449;
    --surface-elevated: #334155;
    --link-color: #c4b5fd;
    --locked-bg: #1f2937;
    --locked-text: #cbd5e1;
    --focus-ring: rgba(167,139,250,0.42);
    --danger-body: #fecaca;
    --select-bg: #334155;
    --select-text: #f8fafc;
    --toast-bg: #1e293b;
    --popup-bg: #1e293b;
}
body.dark-mode .container,
body.dark-mode .app-page,
body.dark-mode .settings-section,
body.dark-mode .settings-block,
body.dark-mode .flyout-panel,
body.dark-mode .modal-content,
body.dark-mode .delete-modal-box,
body.dark-mode .pricing-card,
body.dark-mode .docs-card,
body.dark-mode .admin-card,
body.dark-mode .analytics-card,
body.dark-mode .fc-set-card,
body.dark-mode .fc-card-face,
body.dark-mode .card-row,
body.dark-mode .resource-panel,
body.dark-mode .resource-item,
body.dark-mode .building-menu,
body.dark-mode .menu-content,
body.dark-mode .info-panel,
body.dark-mode .quiz-locked-panel {
    background: var(--panel-bg) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}
body.dark-mode .fc-card-text,
body.dark-mode .fc-set-name,
body.dark-mode .fc-set-desc,
body.dark-mode .form-row-label,
body.dark-mode .resource-value,
body.dark-mode .building-name,
body.dark-mode .building-effect,
body.dark-mode .info-panel p,
body.dark-mode .info-panel strong,
body.dark-mode .docs-card h2,
body.dark-mode .admin-card h2,
body.dark-mode table,
body.dark-mode td,
body.dark-mode th { color: var(--text-primary) !important; }
body.dark-mode .form-row-sub,
body.dark-mode .resource-label,
body.dark-mode .fc-set-meta,
body.dark-mode .study-progress-text,
body.dark-mode .score-bar,
body.dark-mode .empty-quiz,
body.dark-mode .banner-sub { color: var(--text-secondary) !important; }
/* Answer buttons are disabled after selection but must retain feedback colours. */
body.dark-mode button:disabled:not(.quiz-option):not(.answer-btn),
body.dark-mode .locked,
body.dark-mode .disabled,
body.dark-mode [aria-disabled="true"] {
    background: var(--locked-bg) !important;
    color: var(--locked-text) !important;
    border-color: var(--border-color) !important;
    opacity: 0.85;
}
body.dark-mode a { color: var(--link-color); }
input:focus, select:focus, textarea:focus, button:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}
.premium-lock-note, .tier-note {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 8px;
}


/* ===== Shared semantic surfaces and form controls (polish pass) ===== */
:root {
    --gradient-premium: linear-gradient(135deg, #312e81 0%, #6d5dfc 52%, #9333ea 100%);
    --gradient-danger: linear-gradient(135deg, #991b1b 0%, #dc2626 58%, #ef4444 100%);
    --gradient-admin: linear-gradient(135deg, #1e1b4b 0%, #4338ca 55%, #6d5dfc 100%);
    --surface-premium: #f5f3ff;
    --surface-danger: #fff1f2;
    --border-premium: #7c3aed;
    --border-danger: #dc2626;
    --range-track: #d9deea;
    --range-fill: #6d5dfc;
    --range-thumb: #ffffff;
}
body.dark-mode {
    --surface-premium: #211b42;
    --surface-danger: #3a1820;
    --border-premium: #a78bfa;
    --border-danger: #fb7185;
    --range-track: #475569;
    --range-fill: #a78bfa;
    --range-thumb: #f8fafc;
}

input[type="range"] {
    --range-progress: 50%;
    width: 100%;
    min-height: 32px;
    margin: 4px 0;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: transparent;
    cursor: pointer;
    accent-color: var(--range-fill);
    appearance: none;
    -webkit-appearance: none;
}
input[type="range"]::-webkit-slider-runnable-track {
    height: 8px;
    border: 1px solid color-mix(in srgb, var(--range-fill) 20%, var(--range-track));
    border-radius: 999px;
    background: linear-gradient(90deg, var(--range-fill) 0 var(--range-progress), var(--range-track) var(--range-progress) 100%);
}
input[type="range"]::-webkit-slider-thumb {
    width: 22px;
    height: 22px;
    margin-top: -8px;
    border: 3px solid var(--range-fill);
    border-radius: 50%;
    background: var(--range-thumb);
    box-shadow: 0 3px 10px rgba(15, 23, 42, .24);
    appearance: none;
    -webkit-appearance: none;
}
input[type="range"]::-moz-range-track {
    height: 8px;
    border: 1px solid color-mix(in srgb, var(--range-fill) 20%, var(--range-track));
    border-radius: 999px;
    background: var(--range-track);
}
input[type="range"]::-moz-range-progress { height: 8px; border-radius: 999px; background: var(--range-fill); }
input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border: 3px solid var(--range-fill);
    border-radius: 50%;
    background: var(--range-thumb);
    box-shadow: 0 3px 10px rgba(15, 23, 42, .24);
}
input[type="range"]:hover { --range-fill: #7c3aed; }
input[type="range"]:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 3px; }
input[type="range"]:disabled { cursor: not-allowed; filter: grayscale(.6); opacity: .55; }

.btn-upgrade-premium,
.upgrade-cta,
.premium-cta {
    border-color: var(--border-premium) !important;
    background: var(--gradient-premium) !important;
    color: #fff !important;
    box-shadow: 0 12px 30px rgba(76, 29, 149, .3) !important;
}
body.dark-mode .btn-upgrade-premium,
body.dark-mode .upgrade-cta,
body.dark-mode .premium-cta { color: #fff !important; }

.delete-modal-box {
    border: 2px solid var(--border-danger) !important;
    background: var(--surface-danger) !important;
    box-shadow: 0 28px 80px rgba(69, 10, 10, .42) !important;
}
.btn-modal-confirm,
.btn-danger,
button.danger { background: var(--gradient-danger) !important; color: #fff !important; border-color: var(--border-danger) !important; }