/* ============================================
   NEON GLASS ACADEMY — Shared Site Styles
   styles.css — Single source of truth for all
   site-level pages (not lesson slideshows).
   ============================================ */

/* ── CSS VARIABLES ── */
:root {
    --bg-primary: #0a0a12;
    --bg-secondary: #12121c;
    --bg-card: rgba(26, 26, 40, 0.85);
    --bg-card-solid: #1a1a28;
    --bg-elevated: #22222f;

    --bg-gradient: radial-gradient(ellipse at top, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at bottom right, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                   linear-gradient(180deg, #0a0a12 0%, #0f0f1a 100%);

    --text-primary: #ffffff;
    --text-secondary: #c4c4d4;
    --text-muted: #8888a0;

    /* Default accent is purple (homepage). Pages override via body class. */
    --accent-primary: #8b5cf6;
    --accent-secondary: #a78bfa;
    --accent-tertiary: #c4b5fd;
    --accent-dim: #6d28d9;
    --accent-glow: rgba(139, 92, 246, 0.4);

    --glow-primary: 0 0 20px rgba(139, 92, 246, 0.4), 0 0 40px rgba(139, 92, 246, 0.2);
    --glow-intense: 0 0 30px rgba(139, 92, 246, 0.6), 0 0 60px rgba(139, 92, 246, 0.3);
    --glow-subtle: 0 0 15px rgba(139, 92, 246, 0.25);

    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.15);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.15);
    --danger: #ef4444;
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.15);

    --border-subtle: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(139, 92, 246, 0.4);
    --glass-border: rgba(255, 255, 255, 0.15);

    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-blur: blur(12px);

    /* Subject colors — used on homepage cards & nav */
    --math-color: #8b5cf6;
    --ela-color: #3b82f6;
    --writing-color: #22c55e;
    --grammar-color: #f59e0b;
    --spelling-color: #ec4899;
    --misc-color: #f59e0b;
    --calendar-color: #ec4899;
    --journal-color: #8b5cf6;
    --sub-color: #06b6d4;

    --border-radius: 16px;
    --border-radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


/* ── PAGE THEME OVERRIDES ──
   Add class to <body>: <body class="theme-math">
   The accent color + glow change. Everything else stays.
   ============================================ */

/* Math — purple (same as default, explicit for clarity) */
body.theme-math {
    --accent-primary: #8b5cf6;
    --accent-secondary: #a78bfa;
    --accent-tertiary: #c4b5fd;
    --accent-dim: #6d28d9;
    --accent-glow: rgba(139, 92, 246, 0.4);
    --glow-primary: 0 0 20px rgba(139, 92, 246, 0.4), 0 0 40px rgba(139, 92, 246, 0.2);
    --glow-subtle: 0 0 15px rgba(139, 92, 246, 0.25);
    --border-accent: rgba(139, 92, 246, 0.4);
}

/* Reading — blue */
body.theme-reading {
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-tertiary: #93bbfd;
    --accent-dim: #1d4ed8;
    --accent-glow: rgba(59, 130, 246, 0.4);
    --glow-primary: 0 0 20px rgba(59, 130, 246, 0.4), 0 0 40px rgba(59, 130, 246, 0.2);
    --glow-subtle: 0 0 15px rgba(59, 130, 246, 0.25);
    --border-accent: rgba(59, 130, 246, 0.4);
    --bg-gradient: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                   linear-gradient(180deg, #0a0a12 0%, #0f0f1a 100%);
}

/* Writing — emerald */
body.theme-writing {
    --accent-primary: #10b981;
    --accent-secondary: #34d399;
    --accent-tertiary: #6ee7b7;
    --accent-dim: #047857;
    --accent-glow: rgba(16, 185, 129, 0.4);
    --glow-primary: 0 0 20px rgba(16, 185, 129, 0.4), 0 0 40px rgba(16, 185, 129, 0.2);
    --glow-subtle: 0 0 15px rgba(16, 185, 129, 0.25);
    --border-accent: rgba(16, 185, 129, 0.4);
    --bg-gradient: radial-gradient(ellipse at top, rgba(16, 185, 129, 0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at bottom right, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                   linear-gradient(180deg, #0a0a12 0%, #0f0f1a 100%);
}

/* Grammar — amber */
body.theme-grammar {
    --accent-primary: #f59e0b;
    --accent-secondary: #fbbf24;
    --accent-tertiary: #fcd34d;
    --accent-dim: #b45309;
    --accent-glow: rgba(245, 158, 11, 0.4);
    --glow-primary: 0 0 20px rgba(245, 158, 11, 0.4), 0 0 40px rgba(245, 158, 11, 0.2);
    --glow-subtle: 0 0 15px rgba(245, 158, 11, 0.25);
    --border-accent: rgba(245, 158, 11, 0.4);
    --bg-gradient: radial-gradient(ellipse at top, rgba(245, 158, 11, 0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                   linear-gradient(180deg, #0a0a12 0%, #0f0f1a 100%);
}

/* Spelling — rose */
body.theme-spelling {
    --accent-primary: #f43f5e;
    --accent-secondary: #fb7185;
    --accent-tertiary: #fda4af;
    --accent-dim: #be123c;
    --accent-glow: rgba(244, 63, 94, 0.4);
    --glow-primary: 0 0 20px rgba(244, 63, 94, 0.4), 0 0 40px rgba(244, 63, 94, 0.2);
    --glow-subtle: 0 0 15px rgba(244, 63, 94, 0.25);
    --border-accent: rgba(244, 63, 94, 0.4);
    --bg-gradient: radial-gradient(ellipse at top, rgba(244, 63, 94, 0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                   linear-gradient(180deg, #0a0a12 0%, #0f0f1a 100%);
}

/* Misc/Activities — amber (same as grammar) */
body.theme-misc {
    --accent-primary: #f59e0b;
    --accent-secondary: #fbbf24;
    --accent-tertiary: #fcd34d;
    --accent-dim: #b45309;
    --accent-glow: rgba(245, 158, 11, 0.4);
    --glow-primary: 0 0 20px rgba(245, 158, 11, 0.4), 0 0 40px rgba(245, 158, 11, 0.2);
    --glow-subtle: 0 0 15px rgba(245, 158, 11, 0.25);
    --border-accent: rgba(245, 158, 11, 0.4);
    --bg-gradient: radial-gradient(ellipse at top, rgba(245, 158, 11, 0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                   linear-gradient(180deg, #0a0a12 0%, #0f0f1a 100%);
}

/* Calendar — pink */
body.theme-calendar {
    --accent-primary: #ec4899;
    --accent-secondary: #f472b6;
    --accent-tertiary: #f9a8d4;
    --accent-dim: #be185d;
    --accent-glow: rgba(236, 72, 153, 0.4);
    --glow-primary: 0 0 20px rgba(236, 72, 153, 0.4), 0 0 40px rgba(236, 72, 153, 0.2);
    --glow-subtle: 0 0 15px rgba(236, 72, 153, 0.25);
    --border-accent: rgba(236, 72, 153, 0.4);
    --bg-gradient: radial-gradient(ellipse at top, rgba(236, 72, 153, 0.15) 0%, transparent 50%),
                   radial-gradient(ellipse at bottom right, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                   linear-gradient(180deg, #0a0a12 0%, #0f0f1a 100%);
}


/* ── RESET & BASE ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html { height: 100%; }

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100%;
    line-height: 1.6;
    position: relative;
}

/* Subtle scan lines */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    pointer-events: none;
    z-index: 9999;
}


/* ── FLOATING PARTICLES ── */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 0.3; }
    90% { opacity: 0.3; }
    100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
}


/* ── NAVIGATION BANNER ── */
.nav-banner {
    background: rgba(10, 10, 18, 0.95);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.nav-brand-icon {
    width: 72px;
    height: 72px;
    border-radius: 8px;
    object-fit: contain;
}

.nav-brand-text {
    font-weight: 700;
    font-size: 1.4rem;
}

.nav-brand-school {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all var(--transition);
}

.nav-contact:hover {
    background: var(--glass-bg);
    color: var(--accent-primary);
}

.nav-teacher-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all var(--transition);
    background: transparent;
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
}

.nav-teacher-btn:hover {
    background: var(--glass-bg);
    color: var(--accent-secondary);
    border-color: var(--accent-primary);
}

.nav-teacher-btn.logged-in {
    background: rgba(34, 197, 94, 0.2);
    border-color: var(--success);
    color: var(--success);
}


/* ── GLOBAL SEARCH ── */
.nav-search {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-search-input {
    background: var(--glass-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 8px 14px;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    width: 200px;
    transition: all var(--transition);
}

.nav-search-input::placeholder {
    color: var(--text-muted);
}

.nav-search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: color-mix(in srgb, var(--accent-primary) 10%, transparent);
    width: 260px;
}

.nav-search-btn {
    background: var(--glass-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 8px 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

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


/* ── SEARCH RESULTS OVERLAY ── */
.search-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 18, 0.95);
    z-index: 200;
    overflow-y: auto;
    padding: 100px 20px 40px;
}

.search-overlay.active { display: block; }

.search-results-container {
    max-width: 800px;
    margin: 0 auto;
}

.search-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.search-results-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.search-close-btn {
    background: var(--glass-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 10px 20px;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    transition: all var(--transition);
}

.search-close-btn:hover {
    background: var(--accent-primary);
    color: white;
}

.search-result-item {
    background: var(--glass-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    text-decoration: none;
    display: block;
    transition: all var(--transition);
}

.search-result-item:hover {
    border-color: var(--accent-primary);
    transform: translateX(5px);
}

.search-result-title {
    color: var(--accent-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.search-result-category {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

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

.no-results {
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
}


/* ── TEACHER LOGIN MODAL ── */
.teacher-login-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
}

.teacher-login-modal.active { display: flex; }

.teacher-login-box {
    background: var(--bg-card-solid);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    padding: 40px;
    width: 90%;
    max-width: 400px;
    text-align: center;
}

.teacher-login-box h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--accent-secondary);
}

.teacher-login-box p {
    color: var(--text-muted);
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.teacher-login-box input {
    width: 100%;
    padding: 14px 18px;
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Outfit', sans-serif;
    margin-bottom: 15px;
}

.teacher-login-box input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.teacher-login-box .btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    transition: all var(--transition);
}

.teacher-login-box .btn-login:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-primary);
}

.teacher-login-box .btn-cancel {
    background: transparent;
    color: var(--text-muted);
    border: none;
    margin-top: 15px;
    cursor: pointer;
    font-size: 0.9rem;
}

.teacher-login-box .error-msg {
    color: #ef4444;
    font-size: 0.9rem;
    margin-top: 10px;
    display: none;
}


/* ── NAV TABS (bottom row of nav) ── */
.nav-tabs {
    display: flex;
    gap: 5px;
    padding: 10px 0;
    overflow: visible;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.nav-tab:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
    border-color: var(--border-subtle);
}

.nav-tab.active {
    color: var(--accent-primary);
    background: color-mix(in srgb, var(--accent-primary) 15%, transparent);
    border-color: var(--border-accent);
}

.nav-tab-icon { font-size: 1.3rem; }


/* ── ELA DROPDOWN ── */
.nav-dropdown { position: relative; }

.nav-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    white-space: nowrap;
    transition: all var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
    background: none;
    font-family: 'Outfit', sans-serif;
}

.nav-dropdown-toggle:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
    border-color: var(--border-subtle);
}

.nav-dropdown-toggle.active {
    color: var(--accent-primary);
    background: color-mix(in srgb, var(--accent-primary) 15%, transparent);
    border-color: var(--border-accent);
}

.nav-dropdown-arrow {
    font-size: 0.7rem;
    transition: transform 0.2s ease;
}

.nav-dropdown:hover .nav-dropdown-arrow {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(20, 20, 32, 0.98);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 8px;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 10001;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(5px);
}

.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition);
}

.nav-dropdown-item:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.nav-dropdown-item.active {
    background: color-mix(in srgb, var(--accent-primary) 15%, transparent);
    color: var(--accent-primary);
}


/* ── CONTAINER ── */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 40px;
    position: relative;
    z-index: 1;
}


/* ── SECTION TITLES ── */
.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-primary);
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-accent), transparent);
}


/* ── GLASS CARDS (homepage style) ── */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
    margin-bottom: 60px;
}

@media (min-width: 1100px) {
    .card-grid.quick-access,
    .card-grid.subjects {
        grid-template-columns: repeat(4, 1fr);
    }
}

.card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--border-radius);
    padding: 36px;
    border: 1px solid var(--border-subtle);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition);
    display: block;
    position: relative;
    overflow: hidden;
    border-left: 4px solid var(--accent-primary);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--border-accent);
    box-shadow: var(--glow-primary);
}

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

.card-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px var(--accent-glow));
}

.card-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Subject-specific card accents (homepage) */
.card.calendar { border-left-color: var(--calendar-color); }
.card.calendar:hover { box-shadow: 0 0 25px rgba(236, 72, 153, 0.4); }
.card.journal { border-left-color: var(--journal-color); }
.card.journal:hover { box-shadow: 0 0 25px rgba(139, 92, 246, 0.4); }
.card.math { border-left-color: var(--math-color); }
.card.math:hover { box-shadow: 0 0 25px rgba(139, 92, 246, 0.4); }
.card.ela { border-left-color: var(--ela-color); }
.card.ela:hover { box-shadow: 0 0 25px rgba(59, 130, 246, 0.4); }
.card.writing { border-left-color: var(--writing-color); }
.card.writing:hover { box-shadow: 0 0 25px rgba(34, 197, 94, 0.4); }
.card.misc { border-left-color: var(--misc-color); }
.card.misc:hover { box-shadow: 0 0 25px rgba(245, 158, 11, 0.4); }
.card.sub { border-left-color: var(--sub-color); }
.card.sub:hover { box-shadow: 0 0 25px rgba(6, 182, 212, 0.4); }

.coming-soon {
    opacity: 0.5;
    pointer-events: none;
}

.coming-soon .card-title::after {
    content: " (Coming Soon)";
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}


/* ── LESSON LISTING (subject pages) ── */
.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 18px;
}

.lesson-link {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-left: 4px solid var(--accent-primary);
    border-radius: 12px;
    padding: 22px 26px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    display: block;
    min-height: 150px;
    font-weight: 500;
    font-size: 1.1rem;
}

.lesson-link:hover {
    border-color: var(--accent-primary);
    background: color-mix(in srgb, var(--accent-primary) 15%, transparent);
    transform: translateX(6px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.lesson-link .emoji {
    margin-right: 14px;
    font-size: 1.4rem;
}

.lesson-link.hidden { display: none; }
.section-title.hidden { display: none; }
.lessons-grid.hidden { display: none; }


/* ── TAG SYSTEM ── */
.lesson-header { display: inline; }
.lesson-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
}
.tag:hover { transform: scale(1.08); filter: brightness(1.2); }
.tag-subject { background: rgba(139, 92, 246, 0.2); color: #a78bfa; border: 1px solid rgba(255, 255, 255, 0.5); }
.tag-topic { background: rgba(6, 182, 212, 0.2); color: #22d3ee; border: 1px solid rgba(6, 182, 212, 0.3); }
.tag-standard { background: rgba(167, 139, 250, 0.15); color: #c4b5fd; border: 1px solid rgba(245, 158, 11, 0.6); }
.tag-format { background: rgba(16, 185, 129, 0.2); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.5); }
.tag.active { transform: scale(1.05); box-shadow: 0 0 10px currentColor; }
.tag-subject.active { background: rgba(139, 92, 246, 0.45); }
.tag-topic.active { background: rgba(6, 182, 212, 0.45); }
.tag-standard.active { background: rgba(167, 139, 250, 0.4); }
.tag-format.active { background: rgba(16, 185, 129, 0.45); }


/* ── FILTER BAR ── */
.filter-bar {
    display: none;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding: 12px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
}
.filter-bar.visible { display: flex; }
.filter-label { color: var(--text-secondary); font-size: 0.9rem; font-weight: 500; }
.filter-value { color: var(--accent-primary); font-weight: 600; }
.filter-clear {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 4px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s ease;
}
.filter-clear:hover { background: rgba(239, 68, 68, 0.4); }


/* ── LOCAL PAGE SEARCH ── */
.local-search { display: flex; justify-content: center; margin-bottom: 30px; }
.local-search-container {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 8px 16px;
    width: 100%;
    max-width: 500px;
}
.local-search-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    padding: 8px;
    outline: none;
}
.local-search-input::placeholder { color: var(--text-muted); }
.local-search-icon { font-size: 1.2rem; color: var(--text-muted); }
.local-search-clear {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all var(--transition);
    display: none;
}
.local-search-clear.visible { display: block; }
.local-search-clear:hover { background: var(--glass-bg); color: var(--text-primary); }
.no-local-results {
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
    display: none;
}
.no-local-results.visible { display: block; }


/* ── VIEW TOGGLE ── */
.view-toggle { display: flex; justify-content: center; margin-bottom: 20px; }
.view-toggle-group {
    display: inline-flex;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    overflow: hidden;
}
.view-toggle-btn {
    padding: 8px 20px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}
.view-toggle-btn:hover { color: var(--text-primary); background: rgba(255, 255, 255, 0.05); }
.view-toggle-btn.active {
    color: var(--accent-primary);
    background: color-mix(in srgb, var(--accent-primary) 15%, transparent);
    font-weight: 600;
}
.standards-view { display: none; }
.standards-view.active { display: block; }
.topic-view.hidden { display: none; }


/* ── TOPIC JUMP NAV ── */
.topic-nav {
    position: sticky;
    z-index: 90;
    background: rgba(10, 10, 18, 0.92);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-subtle);
    padding: 10px 0;
}

.topic-nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-glow) transparent;
}

.topic-nav-inner::-webkit-scrollbar { height: 6px; }
.topic-nav-inner::-webkit-scrollbar-track { background: transparent; }
.topic-nav-inner::-webkit-scrollbar-thumb { background: var(--accent-glow); border-radius: 3px; }

.topic-chip {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    padding: 7px 14px;
    border-radius: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: 'Outfit', sans-serif;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.topic-chip:hover {
    background: color-mix(in srgb, var(--accent-primary) 15%, transparent);
    color: var(--text-primary);
    border-color: var(--border-accent);
}

.topic-chip.active {
    background: color-mix(in srgb, var(--accent-primary) 25%, transparent);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 16px var(--accent-glow);
}


/* ── LESSON PREVIEW MODAL ── */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.modal-overlay.open { display: flex; }

.modal-content {
    background: rgba(18, 18, 30, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
    position: relative;
    animation: modalIn 0.25s ease-out;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
    position: absolute;
    top: 16px; right: 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-secondary);
    width: 72px; height: 72px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10;
    font-family: 'Outfit', sans-serif;
}
.modal-close:hover { background: rgba(239, 68, 68, 0.3); color: #f87171; border-color: rgba(239, 68, 68, 0.4); }

.modal-preview {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #0a0a12;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    position: relative;
}
.modal-preview iframe { width: 100%; height: 100%; pointer-events: none; }
.modal-preview-loading { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: rgba(241, 245, 249, 0.4); font-size: 0.9rem; }

.modal-info { padding: 24px 28px; }
.modal-title { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); margin-bottom: 10px; }
.modal-synopsis { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; margin-bottom: 16px; }
.modal-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.modal-open-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-primary);
    color: white;
    padding: 12px 28px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    font-family: 'Outfit', sans-serif;
    transition: all 0.2s ease;
}
.modal-open-btn:hover {
    filter: brightness(1.15);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--accent-glow);
}


/* ── BACK LINK ── */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-secondary);
    text-decoration: none;
    margin-bottom: 20px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.back-link:hover {
    color: var(--accent-primary);
    text-shadow: 0 0 20px var(--accent-glow);
}


/* ── QUICK LINKS (homepage) ── */
.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 50px;
    padding-top: 40px;
    border-top: 1px solid var(--border-subtle);
}

.quick-link {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    color: var(--text-secondary);
    padding: 14px 28px;
    border-radius: 25px;
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 500;
    transition: all var(--transition);
    border: 1px solid var(--border-subtle);
}

.quick-link:hover {
    color: var(--text-primary);
    border-color: var(--accent-primary);
    box-shadow: var(--glow-subtle);
    transform: translateY(-2px);
}

.quick-link.coming-soon {
    opacity: 0.4;
    pointer-events: none;
}


/* ── FOOTER ── */
footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-subtle);
    background: var(--glass-bg);
}

footer a {
    color: var(--accent-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

footer a:hover { color: var(--accent-primary); }

.footer-heart {
    color: var(--accent-primary);
    animation: pulse 2s infinite;
}

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


/* ── LESSON PAGE OVERRIDES ──
   Applied when <body> has a theme-* class on subject listing pages.
   Overrides homepage defaults for h1, section titles, header, etc.
   ============================================ */

/* Subject page header */
body[class*="theme-"] header {
    text-align: center;
    padding: 40px 20px;
    margin-bottom: 30px;
}

/* Subject page h1 — accent gradient instead of white gradient */
body[class*="theme-"] h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-tertiary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px var(--accent-glow));
}

body[class*="theme-"] .subtitle {
    color: var(--text-secondary);
    font-size: 1.3rem;
}

/* Subject page section titles — border-bottom style instead of ::after */
body[class*="theme-"] .section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-secondary);
    margin: 40px 0 20px 0;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--glass-border);
}

body[class*="theme-"] .section-title::after {
    display: none;
}

body[class*="theme-"] .section-title:first-of-type {
    margin-top: 0;
}

/* Spelling overrides — narrower layout, smaller h1 */
body.theme-spelling .container {
    max-width: 900px;
    padding: 40px 20px;
}

body.theme-spelling header {
    margin-bottom: 40px;
}

body.theme-spelling h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: none;
}

body.theme-spelling .subtitle {
    font-size: 1.1rem;
    font-weight: 400;
}

body.theme-spelling .section-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 35px 0 15px;
    border-bottom-color: var(--border-subtle);
}


/* ── RESPONSIVE ── */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .card { padding: 22px; }
    .nav-brand-text { display: none; }
    .nav-contact span:last-child { display: none; }
    .nav-search-input { width: 120px; font-size: 0.8rem; padding: 6px 10px; }
    .nav-search-input:focus { width: 150px; }
    .nav-search-btn { padding: 6px 10px; }
    .nav-tabs { gap: 3px; }
    .nav-tab { padding: 8px 12px; font-size: 0.8rem; }
    .nav-tab span:not(.nav-tab-icon) { display: none; }
    .nav-dropdown-toggle { padding: 8px 12px; font-size: 0.8rem; }
    .nav-dropdown-toggle span:not(.nav-tab-icon):not(.nav-dropdown-arrow) { display: none; }
    .nav-dropdown-arrow { display: none; }
    .topic-nav { padding: 8px 0; }
    .topic-nav-inner { padding: 0 12px; }
    .topic-chip { font-size: 0.78rem; padding: 6px 12px; }
}

@media (max-width: 600px) {
    h1 { font-size: 1.8rem; }
    .lessons-grid { grid-template-columns: 1fr; }
    .modal-content { max-height: 95vh; border-radius: 14px; }
    .modal-info { padding: 18px 20px; }
    .modal-title { font-size: 1.2rem; }
    .modal-preview { aspect-ratio: 4 / 3; }
}

@media (max-width: 480px) {
    .section-title { font-size: 1.2rem; }
    .card-grid { gap: 15px; }
}
