/* ==========================================================================
   Japel-Bel: Sistem Jadwal Pelajaran Terintegrasi Bel Otomatis Sekolah
   Design System & Styling: Modern Glassmorphic Dark & Light Modes
   ========================================================================== */

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

:root {
    /* Color Palette - Dark Theme (Default) */
    --bg-main: #0b0f19;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.75);
    --bg-card-hover: rgba(30, 41, 59, 0.85);
    --bg-glass: rgba(255, 255, 255, 0.04);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.16);

    --primary: #3b82f6;
    --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    --accent: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --cyan: #06b6d4;

    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 20px 35px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.35);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-main: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-glass: rgba(0, 0, 0, 0.03);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.14);

    --text-main: #0f172a;
    --text-muted: #475569;
    --text-dim: #94a3b8;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 35px -5px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.2);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(59, 130, 246, 0.07) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(139, 92, 246, 0.07) 0%, transparent 40%);
    background-attachment: fixed;
}

/* Header & Navbar */
.app-header {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.75rem 1.5rem;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.brand-icon-wrapper {
    width: 44px;
    height: 44px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.35);
    animation: gentle-pulse 3s infinite;
}

@keyframes gentle-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.04); }
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #60a5fa 0%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-glass);
    padding: 0.3rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

.nav-tab-btn {
    background: transparent;
    border: none;
    padding: 0.55rem 1rem;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-family: inherit;
}

.nav-tab-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.nav-tab-btn.active {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.35);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Top Banner Notice */
.audio-unlock-banner {
    background: linear-gradient(90deg, #1e3a8a 0%, #312e81 100%);
    color: #e0e7ff;
    padding: 0.65rem 1.5rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.active-bell-alert {
    display: none;
    background: linear-gradient(90deg, #dc2626 0%, #ea580c 100%);
    color: #fff;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    animation: flash-pulse 1.2s infinite;
    position: sticky;
    top: 65px;
    z-index: 99;
}

@keyframes flash-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

/* Layout Container */
.main-wrapper {
    max-width: 1400px;
    width: 100%;
    margin: 1.5rem auto;
    padding: 0 1.5rem 3rem 1.5rem;
    flex: 1;
}

.tab-page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Dashboard Clock & Next Bell Hero */
.hero-monitor-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 900px) {
    .hero-monitor-grid {
        grid-template-columns: 1fr;
    }
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glass-card:hover {
    border-color: var(--border-hover);
}

.clock-card {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.7) 0%, rgba(15, 23, 42, 0.8) 100%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.clock-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.date-indicator {
    font-size: 1rem;
    color: var(--cyan);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.status-pill {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.status-pill.online {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.digital-clock-display {
    font-family: var(--font-mono);
    font-size: 4.2rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #ffffff;
    text-shadow: 0 0 30px rgba(59, 130, 246, 0.35);
    margin: 0.5rem 0;
    line-height: 1.1;
}

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

.preset-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.badge-preset {
    background: rgba(139, 92, 246, 0.2);
    color: #c084fc;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

/* Next Bell Target Card */
.target-bell-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: linear-gradient(135deg, rgba(30, 27, 75, 0.6) 0%, rgba(15, 23, 42, 0.8) 100%);
    border-color: rgba(139, 92, 246, 0.25);
}

.target-bell-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.target-subtitle {
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.countdown-badge {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.countdown-badge.active {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
    animation: pulse-countdown 1.5s infinite;
}

@keyframes pulse-countdown {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.countdown-badge.completed {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.target-body {
    margin: 1rem 0;
}

.target-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.3rem;
}

.target-time {
    font-size: 1.1rem;
    color: #a5b4fc;
    font-weight: 600;
}

/* Audio Visualizer Canvas */
.visualizer-wrapper {
    height: 48px;
    width: 100%;
    margin-top: 0.5rem;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: rgba(0, 0, 0, 0.2);
}

#audioVisualizer {
    width: 100%;
    height: 100%;
    display: block;
}

/* Manual Quick Triggers Bar */
.quick-triggers-section {
    margin-bottom: 1.5rem;
}

.section-title-sm {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 700;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quick-bell-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
}

.btn-quick-bell {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.85rem 0.75rem;
    color: var(--text-main);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.825rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    text-align: center;
}

.btn-quick-bell i {
    font-size: 1.3rem;
    color: var(--primary);
    transition: transform 0.2s;
}

.btn-quick-bell:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.btn-quick-bell:hover i {
    transform: scale(1.2);
}

.btn-quick-bell.btn-emergency {
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-quick-bell.btn-emergency i {
    color: var(--danger);
}

.btn-quick-bell.btn-emergency:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: var(--danger);
}

/* Dashboard Bottom Grid: Today's Timeline + Logs */
.dashboard-content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 992px) {
    .dashboard-content-grid {
        grid-template-columns: 1fr;
    }
}

.dashboard-bell-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 520px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.dashboard-bell-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.dashboard-bell-row:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}

.dashboard-bell-row.current-active {
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.25);
}

.dashboard-bell-row.disabled {
    opacity: 0.5;
}

.bell-time-badge {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    display: inline-block;
}

.bell-info-col {
    flex: 1;
    margin: 0 1.25rem;
}

.bell-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.bell-tag {
    font-size: 0.65rem;
    padding: 0.15rem 0.45rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    text-transform: uppercase;
}

.badge-lesson { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.badge-break { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.badge-end { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.badge-flag { background: rgba(239, 68, 68, 0.15); color: #f87171; }

.bell-tone-meta {
    font-size: 0.775rem;
    color: var(--text-muted);
    display: flex;
    gap: 1rem;
    margin-top: 0.2rem;
}

/* History Logs */
.log-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 520px;
    overflow-y: auto;
}

.log-item {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.log-time {
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.log-tag {
    font-size: 0.65rem;
    background: rgba(255, 255, 255, 0.08);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    margin-left: 0.4rem;
}

/* ==========================================================================
   Timetable Matrix Styles (Jadwal Pelajaran)
   ========================================================================== */

.filter-bar-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem 1.5rem;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.timetable-header-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.highlight-text {
    color: var(--primary);
}

.timetable-card-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.timetable-period-row {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    transition: var(--transition);
}

.timetable-period-row:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateX(3px);
}

.timetable-period-row.empty-slot {
    border-left-color: var(--text-dim);
    opacity: 0.75;
}

.period-number {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 65px;
    border-right: 1px solid var(--border-color);
    padding-right: 1rem;
}

.period-number .num {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1;
}

.period-number .label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
}

.subject-info {
    flex: 1;
}

.subject-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.3rem;
}

.badge-subject {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
}

.subject-meta {
    font-size: 0.825rem;
    color: var(--text-muted);
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.subject-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.period-actions {
    display: flex;
    gap: 0.5rem;
}

.break-divider {
    background: linear-gradient(90deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.02) 100%);
    border: 1px dashed rgba(245, 158, 11, 0.3);
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-md);
    color: #fbbf24;
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 0.05em;
}

/* ==========================================================================
   Bilingual Bell Manager & Announcements
   ========================================================================== */

.bell-manager-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 1.5rem;
}

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

.announcements-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 750px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.announcement-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    transition: var(--transition);
}

.announcement-card:hover {
    border-color: var(--border-hover);
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.85rem;
    padding-bottom: 0.65rem;
    border-bottom: 1px solid var(--border-color);
}

.badge-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: #60a5fa;
}

.card-tools {
    display: flex;
    gap: 0.4rem;
}

.lang-row {
    margin-bottom: 0.6rem;
}

.lang-tag {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    margin-bottom: 0.25rem;
}

.lang-tag.id {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
}

.lang-tag.en {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}

.lang-text {
    font-size: 0.875rem;
    color: var(--text-main);
    line-height: 1.4;
    padding-left: 0.2rem;
}

/* ==========================================================================
   Table & General Form Elements
   ========================================================================== */

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.custom-table th {
    background: var(--bg-glass);
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.custom-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.custom-table tr:hover td {
    background: var(--bg-card-hover);
}

.row-disabled {
    opacity: 0.45;
}

.tone-badge {
    font-size: 0.775rem;
    background: var(--bg-glass);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

/* Form Controls */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.form-control, .form-select {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.65rem 0.85rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.875rem;
    outline: none;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Range Slider */
.range-slider-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.range-slider {
    flex: 1;
    accent-color: var(--primary);
    cursor: pointer;
}

.slider-val {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary);
    min-width: 45px;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255, 255, 255, 0.15);
    transition: .3s;
    border-radius: 34px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background: var(--primary-gradient);
}

input:checked + .toggle-slider:before {
    transform: translateX(22px);
}

.toggle-switch-sm {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
}

.toggle-switch-sm input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch-sm .toggle-slider:before {
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
}

.toggle-switch-sm input:checked + .toggle-slider:before {
    transform: translateX(16px);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.65rem 1.15rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--bg-glass);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-primary-outline {
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #60a5fa;
}

.btn-primary-outline:hover {
    background: rgba(59, 130, 246, 0.18);
    border-color: var(--primary);
}

.btn-danger-outline {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.btn-danger-outline:hover {
    background: rgba(239, 68, 68, 0.18);
    border-color: var(--danger);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.btn-sm {
    padding: 0.45rem 0.85rem;
    font-size: 0.8rem;
}

.btn-xs {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
}

.btn-icon {
    padding: 0.65rem;
    border-radius: var(--radius-sm);
}

/* Modals */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.modal.show {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 540px;
    z-index: 1001;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: modalPop 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 700;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.3rem;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-main);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    min-width: 280px;
    max-width: 420px;
    animation: toastIn 0.3s ease;
}

.toast.fade-out {
    animation: toastOut 0.4s ease forwards;
}

@keyframes toastIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes toastOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

.toast-bell {
    border-left: 4px solid var(--primary);
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.9) 0%, rgba(17, 24, 39, 0.95) 100%);
}

.toast-success { border-left: 4px solid var(--success); }
.toast-info { border-left: 4px solid var(--cyan); }
.toast-warning { border-left: 4px solid var(--warning); }

/* Settings Chips */
.subjects-chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 0.75rem;
}

.subject-chip {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.825rem;
}

.chip-code {
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-main);
}

.chip-name {
    color: var(--text-muted);
}

.btn-chip-del {
    background: transparent;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-chip-del:hover {
    color: var(--danger);
}

/* Print Styles */
@media print {
    body {
        background: #ffffff !important;
        color: #000000 !important;
    }
    .app-header, .header-nav, .filter-bar-card, .period-actions, .audio-unlock-banner, .toast-container, .btn {
        display: none !important;
    }
    .main-wrapper {
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
    }
    .glass-card, .timetable-period-row {
        background: #ffffff !important;
        border: 1px solid #ccc !important;
        box-shadow: none !important;
        color: #000 !important;
        break-inside: avoid;
    }
    .subject-title h4, .period-number .num {
        color: #000000 !important;
    }
}