/* Import Modern Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Color Palette — Light Glass (violet + teal) */
    --primary: #6d28d9;
    --primary-hover: #5b21b6;
    --primary-light: #ede9fe;
    --accent: #0891b2;
    --heading-grad: linear-gradient(90deg, #6d28d9, #0891b2);
    --success: #10b981;
    --success-light: #ecfdf5;
    --success-text: #047857; /* 5.3:1 contrast against white/light-green */
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --warning-text: #b45309; /* 4.5:1 contrast against white */
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --danger-text: #b91c1c;  /* 5.5:1 contrast against white */
    --dark: #1e293b;
    --dark-muted: #64748b;
    --light: #eef2ff;
    --border: #e6e1f7;
    --surface: #ffffff;
    --text-secondary: #475569;
    --card-shadow: 0 10px 30px -8px rgba(109, 40, 217, 0.12), 0 8px 10px -6px rgba(109, 40, 217, 0.06);
    --glow-shadow: 0 0 22px rgba(124, 58, 237, 0.25);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --max-width: 1280px;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
}

/* Global High-Contrast Focus Ring */
:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Reset Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background:
        radial-gradient(620px 460px at 12% 6%, rgba(124, 58, 237, 0.13), transparent 70%),
        radial-gradient(560px 420px at 90% 12%, rgba(6, 182, 212, 0.11), transparent 70%),
        radial-gradient(760px 520px at 50% 105%, rgba(217, 70, 239, 0.07), transparent 70%),
        #eef2ff;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Dashboard Header */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
    animation: fadeInDown 0.6s ease-out;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    box-shadow: var(--glow-shadow);
}

.logo-icon img,
.auth-header-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: inherit;
    padding: 5px;
}

/* Full logo (mark + institute name) — white chip keeps it legible on light & dark */
.logo-full-img {
    height: 60px;
    width: auto;
    background: #ffffff;
    border-radius: 12px;
    padding: 6px 10px;
    box-shadow: var(--card-shadow);
    flex-shrink: 0;
}
@media (max-width: 480px) {
    .logo-full-img { height: 48px; }
}

.auth-header-icon.logo-full {
    width: 104px;
    height: 104px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    padding: 10px;
    margin: 0 auto 1.25rem auto;
}
.auth-header-icon.logo-full img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 0;
    border-radius: 0;
}

.logo-text h1 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text p {
    font-size: 0.875rem;
    color: var(--dark-muted);
    font-weight: 500;
}

.user-badge {
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.badge-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-muted);
}

/* Sections Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2.5rem;
    animation: fadeInUp 0.8s ease-out;
}

@media (max-width: 968px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .user-badge {
        align-self: flex-start;
    }
}

/* Category Sections */
.tests-section {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.module-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark);
}

.module-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 24px;
    background: var(--heading-grad);
    border-radius: 2px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* Test Card */
.test-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
    cursor: pointer;
    min-height: 200px;
}

.test-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--border);
    transition: var(--transition);
}

.test-card.reading::before {
    background: linear-gradient(to right, #3b82f6, #60a5fa);
}

.test-card.listening::before {
    background: linear-gradient(to right, #8b5cf6, #a78bfa);
}

.test-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.test-card.reading:hover {
    border-color: #93c5fd;
}

.test-card.listening:hover {
    border-color: #c4b5fd;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.test-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.reading .test-badge {
    background-color: #eff6ff;
    color: #1d4ed8;
}

.listening .test-badge {
    background-color: #f5f3ff;
    color: #6d28d9;
}

.difficulty-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--dark-muted);
}

.card-body h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.card-body p {
    font-size: 0.875rem;
    color: var(--dark-muted);
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
    margin-top: auto;
}

.test-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--dark-muted);
    font-weight: 500;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.start-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--light);
    color: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.test-card:hover .start-btn {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: scale(1.1);
}

/* Sidebar Info Cards */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--card-shadow);
}

.info-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Band Score Table */
.score-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    text-align: left;
}

.score-table th, .score-table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
}

.score-table th {
    font-weight: 700;
    color: var(--dark);
    background-color: var(--light);
}

.score-table tr:hover {
    background-color: var(--primary-light);
}

.band-pill {
    background-color: var(--primary);
    color: white;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-weight: 700;
}

/* Tips List */
.tips-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tips-list li {
    font-size: 0.875rem;
    color: var(--dark-muted);
    padding-left: 1.5rem;
    position: relative;
}

.tips-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: .5;
    }
}

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

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

/* Card Solution Button */
.sol-card-btn {
    background: none;
    border: 1px solid var(--primary);
    color: var(--primary);
    font-size: 0.7rem;
    border-radius: 4px;
    padding: 0.15rem 0.4rem;
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    margin-left: 0.5rem;
}

.sol-card-btn:hover {
    background-color: var(--primary-light);
    transform: scale(1.05);
}

.test-card.listening .sol-card-btn {
    border-color: #8b5cf6;
    color: #8b5cf6;
}

.test-card.listening .sol-card-btn:hover {
    background-color: #f5f3ff;
}

.test-card.custom-imported-card .sol-card-btn {
    border-color: var(--success);
    color: var(--success);
}

.test-card.custom-imported-card .sol-card-btn:hover {
    background-color: var(--success-light);
}

/* ==========================================
   AUTH TABS (Login / Register)
   ========================================== */
.auth-tabs {
    display: flex;
    border-bottom: 2px solid rgba(255,255,255,0.1);
    margin-bottom: 1.5rem;
    gap: 0;
}
.auth-tab-btn {
    flex: 1;
    background: none;
    border: none;
    color: rgba(255,255,255,0.5);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
}
.auth-tab-btn.active {
    color: #fff;
    border-bottom-color: var(--primary);
}
.auth-tab-btn:hover:not(.active) {
    color: rgba(255,255,255,0.8);
}
.auth-tab-pane { display: none; }
.auth-tab-pane.active { display: block; }

/* Register form specific */
.auth-fields-form .register-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}
.auth-success-msg {
    display: none;
    background: rgba(16,185,129,0.15);
    border: 1px solid rgba(16,185,129,0.3);
    border-radius: 10px;
    padding: 1rem 1.25rem;
    color: #6ee7b7;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: 1rem;
}

/* ==========================================
   MY RESULTS DASHBOARD PANEL
   ========================================== */
#my-results-panel {
    display: none;
    position: fixed;
    top: 0; right: 0;
    width: min(520px, 100vw);
    height: 100vh;
    background: #fff;
    box-shadow: -8px 0 40px rgba(0,0,0,0.15);
    z-index: 9000;
    flex-direction: column;
    animation: slideInRight 0.3s cubic-bezier(0.4,0,0.2,1);
}
#my-results-panel.open { display: flex; }
@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to   { transform: translateX(0);    opacity: 1; }
}
.my-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, #6d28d9, #0891b2);
    color: #fff;
}
.my-results-header h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
}
.my-results-close {
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    width: 32px; height: 32px;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.my-results-close:hover { background: rgba(255,255,255,0.3); }
.my-results-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
}
.my-results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}
.my-results-table th {
    background: var(--light);
    color: var(--dark-muted);
    font-weight: 700;
    padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 2px solid var(--border);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.my-results-table td {
    padding: 0.7rem 0.75rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.my-results-table tr:last-child td { border-bottom: none; }
.my-results-table tr:hover td { background: var(--light); }
.band-chip {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-weight: 800;
    font-size: 0.8rem;
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    min-width: 36px;
    text-align: center;
}
.my-results-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--dark-muted);
}
.my-results-empty .empty-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
#results-overlay-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.35);
    z-index: 8999;
}
#results-overlay-backdrop.open { display: block; }

/* My Results button in header */
.my-results-trigger-btn {
    background: rgba(124,58,237,0.10);
    border: 1px solid rgba(124,58,237,0.28);
    color: var(--primary);
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 0.85rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: none;
}
.my-results-trigger-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}

/* ==========================================
   LAST-ATTEMPT BADGE ON TEST CARDS
   ========================================== */
.last-attempt-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--success-text);
    background: var(--success-light);
    border: 1px solid rgba(16,185,129,0.2);
    border-radius: 6px;
    padding: 0.18rem 0.55rem;
    margin-left: 0.4rem;
    vertical-align: middle;
    white-space: nowrap;
}

/* ===== Collection-based Test Library ===== */
.filter-pill {
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}
.filter-pill:hover { border-color: var(--primary); color: var(--primary); }
.filter-pill.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.collection-group {
    margin-bottom: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    background: var(--surface);
}
.collection-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    cursor: pointer;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    user-select: none;
    transition: background 0.15s;
}
.collection-header:hover { background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%); }
.collection-header h3 {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.collection-header .coll-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.collection-header .coll-count {
    background: var(--primary-light, #e0e7ff);
    color: var(--primary);
    padding: 0.15rem 0.5rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.72rem;
}
.collection-header .coll-arrow {
    transition: transform 0.2s;
    font-size: 0.8rem;
}
.collection-group.open .coll-arrow { transform: rotate(180deg); }
.collection-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.collection-group.open .collection-body { max-height: 2000px; }

.practice-set {
    display: flex;
    align-items: stretch;
    border-top: 1px solid var(--border);
}
.practice-set:first-child { border-top: none; }
.practice-set-label {
    width: 130px;
    min-width: 130px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-secondary);
    background: #fafbfc;
    border-right: 1px solid var(--border);
}
.practice-set-tests {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 0;
}
.pst-cell {
    flex: 1;
    min-width: 160px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.55rem 0.75rem;
    gap: 0.5rem;
    border-right: 1px solid var(--border);
    transition: background 0.1s;
}
.pst-cell:last-child { border-right: none; }
.pst-cell:hover { background: #f0f4ff; }
.pst-cell.locked { opacity: 0.5; }
.pst-skill-icon {
    font-size: 0.85rem;
    font-weight: 700;
    min-width: 18px;
}
.pst-skill-icon.reading { color: #2563eb; }
.pst-skill-icon.listening { color: #7c3aed; }
.pst-title {
    flex: 1;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.pst-actions {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.pst-btn {
    padding: 0.25rem 0.55rem;
    border-radius: 5px;
    border: 1px solid var(--border);
    background: var(--surface);
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.pst-btn.start { background: var(--primary); color: #fff; border-color: var(--primary); }
.pst-btn.start:hover { background: var(--primary-hover); }
.pst-btn.sol { color: var(--primary); }
.pst-btn.sol:hover { background: var(--primary-light, #e0e7ff); }
.pst-btn:disabled { opacity: 0.4; cursor: not-allowed; }

@media (max-width: 640px) {
    .practice-set { flex-direction: column; }
    .practice-set-label { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
    .pst-cell { min-width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
    .pst-cell:last-child { border-bottom: none; }
}

/* ==========================================
   LIGHT GLASS POLISH (portal surfaces)
   ========================================== */
/* Frosted glass on the student dashboard header bar */
.dashboard-header {
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(230, 225, 247, 0.9);
}

/* Card hover — soft violet lift (cards stay opaque for speed) */
.info-card, .test-card {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s, border-color 0.3s;
}
.info-card:hover, .test-card:hover {
    border-color: rgba(139, 92, 246, 0.45);
    box-shadow: 0 18px 40px -12px rgba(109, 40, 217, 0.18);
}

/* Primary action glow */
.pst-btn.start, .start-btn:hover {
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.28);
}

/* Scrollbar tint to match */
::-webkit-scrollbar-thumb { background: #c4b5fd; }
::-webkit-scrollbar-thumb:hover { background: #a78bfa; }

/* ==========================================
   DARK MODE — Light Glass dark variant
   Toggle: header 🌙/☀️ button · persists in localStorage ('sa_theme')
   Default light. Exam pages intentionally stay light (reading focus).
   ========================================== */
[data-theme="dark"] {
    --primary-light: #2e1065;
    --success-light: #0b3b2e;
    --success-text: #34d399;
    --warning-light: #45290a;
    --warning-text: #fbbf24;
    --danger-light: #4c1212;
    --danger-text: #fca5a5;
    --dark: #e2e8f0;
    --dark-muted: #94a3b8;
    --light: #141d33;
    --border: #2c3856;
    --surface: #131b31;
    --text-secondary: #94a3b8;
    --card-shadow: 0 10px 30px -8px rgba(0, 0, 0, 0.45);
    --glow-shadow: 0 0 22px rgba(124, 58, 237, 0.35);
}
[data-theme="dark"] body {
    background:
        radial-gradient(620px 460px at 12% 6%, rgba(124, 58, 237, 0.16), transparent 70%),
        radial-gradient(560px 420px at 90% 12%, rgba(6, 182, 212, 0.12), transparent 70%),
        radial-gradient(760px 520px at 50% 105%, rgba(217, 70, 239, 0.08), transparent 70%),
        #0b1020;
    color: var(--dark);
}
[data-theme="dark"] ::-webkit-scrollbar-track { background: #0d1428; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: #334155; }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: #475569; }

/* Frosted header becomes dark glass */
[data-theme="dark"] .dashboard-header {
    background: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom-color: rgba(44, 56, 86, 0.9);
}

/* ---- Student portal surfaces ---- */
[data-theme="dark"] .user-badge,
[data-theme="dark"] .test-card,
[data-theme="dark"] .info-card,
[data-theme="dark"] .collection-group,
[data-theme="dark"] .collection-header,
[data-theme="dark"] #my-results-panel,
[data-theme="dark"] .student-stat-card,
[data-theme="dark"] .leaderboard-card,
[data-theme="dark"] .hd-card,
[data-theme="dark"] .hd-loading,
[data-theme="dark"] .hd-empty,
[data-theme="dark"] .speaking-lib,
[data-theme="dark"] .speaking-session .session-card,
[data-theme="dark"] .speaking-empty,
[data-theme="dark"] .speaking-completed,
[data-theme="dark"] .speaking-error,
[data-theme="dark"] .speaking-loading,
[data-theme="dark"] .speaking-lib-login,
[data-theme="dark"] .writing-lib,
[data-theme="dark"] .writing-lib-login,
[data-theme="dark"] .writing-session .session-card,
[data-theme="dark"] .writing-chart-figure {
    background: #131b31;
    border-color: #2c3856;
}
[data-theme="dark"] .my-results-table th,
[data-theme="dark"] .admin-data-table th {
    background: #141d33;
    color: #cbd5e1;
}
[data-theme="dark"] .my-results-table tr:hover td { background: #182240; }
[data-theme="dark"] .student-stat-card:hover { background: #182240; border-color: #6d28d9; }
[data-theme="dark"] .writing-lib-head h3 { color: #e2e8f0; }

/* ---- Teacher panel surfaces ---- */
[data-theme="dark"] .teacher-card-panel,
[data-theme="dark"] .teacher-stat,
[data-theme="dark"] .row-actions-menu .row-actions-box,
[data-theme="dark"] .onboarding-card,
[data-theme="dark"] .tp-chip {
    background: #131b31;
    border-color: #2c3856;
}
[data-theme="dark"] .onboarding-card h2 { color: #e2e8f0; }
[data-theme="dark"] .onboarding-steps li { color: #cbd5e1; }
[data-theme="dark"] .admin-data-table td { color: #cbd5e1; }
[data-theme="dark"] .tp-search,
[data-theme="dark"] .tp-chip { color: #94a3b8; background-color: #131b31; border-color: #2c3856; }

/* ---- Shared bits ---- */
[data-theme="dark"] .modal-content { background: #131b31 !important; }
[data-theme="dark"] .back-dash-btn { color: #a78bfa; }