/* ==========================================================================
   LecturerHub - Ultra Premium Glassmorphism Design System
   ========================================================================== */

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

:root {
    /* Color Palette */
    --bg-base: #0a0f1d;
    --bg-surface: #111827;
    --bg-surface-elevated: #1e293b;
    --bg-gradient: radial-gradient(circle at 15% 15%, #1e1b4b 0%, #0a0f1d 70%);

    --glass-bg: rgba(17, 24, 39, 0.65);
    --glass-bg-hover: rgba(30, 41, 59, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-focus: rgba(99, 102, 241, 0.5);
    --glass-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);

    /* Accents */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.15);
    --primary-glow: 0 0 25px rgba(99, 102, 241, 0.4);

    --secondary: #06b6d4;
    --accent: #8b5cf6;

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.12);
    --success-border: rgba(16, 185, 129, 0.3);

    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.12);
    --warning-border: rgba(245, 158, 11, 0.3);

    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-border: rgba(239, 68, 68, 0.3);

    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.12);

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

    /* Typography */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Geometry & Transitions */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Light Mode Theme Adaptation (High-Contrast, Crisp, Clean & Elegant)
   ========================================================================== */
[data-theme="light"] {
    --bg-base: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #f1f5f9;
    --bg-gradient: radial-gradient(circle at 15% 15%, #e2e8f0 0%, #f8fafc 70%);

    --glass-bg: rgba(255, 255, 255, 0.92);
    --glass-bg-hover: #f1f5f9;
    --glass-border: rgba(15, 23, 42, 0.09);
    --glass-border-focus: rgba(99, 102, 241, 0.6);
    --glass-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 0 1px 1px rgba(0, 0, 0, 0.03);

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

    --success: #16a34a;
    --success-bg: #dcfce7;
    --success-border: #bbf7d0;

    --warning: #d97706;
    --warning-bg: #fef3c7;
    --warning-border: #fde68a;

    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --danger-border: #fecaca;

    --info: #2563eb;
    --info-bg: #dbeafe;
    --info-border: #bfdbfe;
}

[data-theme="light"] body {
    background-color: var(--bg-base);
    color: var(--text-main);
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(139, 92, 246, 0.04) 0px, transparent 50%),
        radial-gradient(at 50% 100%, rgba(6, 182, 212, 0.03) 0px, transparent 50%);
}

[data-theme="light"] ::-webkit-scrollbar-track {
    background: #f1f5f9;
}
[data-theme="light"] ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
}
[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

[data-theme="light"] .sidebar {
    background: #ffffff;
    border-right-color: #e2e8f0;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .card,
[data-theme="light"] .glass-panel {
    background: #ffffff !important;
    border-color: #e2e8f0 !important;
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05), 0 2px 6px -1px rgba(0, 0, 0, 0.02) !important;
}

[data-theme="light"] .glass-card {
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04) !important;
}

[data-theme="light"] .glass-card:hover {
    background: #f8fafc !important;
    border-color: #cbd5e1 !important;
    box-shadow: 0 8px 20px -4px rgba(0, 0, 0, 0.08) !important;
}

[data-theme="light"] .stat-card {
    background: #ffffff !important;
    border-color: #e2e8f0 !important;
    box-shadow: 0 4px 15px -1px rgba(0, 0, 0, 0.05) !important;
}

[data-theme="light"] .stat-card .stat-value {
    color: #0f172a !important;
}

[data-theme="light"] .stat-card .stat-label {
    color: #64748b !important;
}

[data-theme="light"] .btn-secondary {
    background: #f1f5f9 !important;
    color: #334155 !important;
    border: 1px solid #cbd5e1 !important;
}

[data-theme="light"] .btn-secondary:hover {
    background: #e2e8f0 !important;
    border-color: #94a3b8 !important;
    color: #0f172a !important;
}

[data-theme="light"] .form-control,
[data-theme="light"] .form-select,
[data-theme="light"] textarea.form-control,
[data-theme="light"] input.form-control {
    background: #ffffff !important;
    border-color: #cbd5e1 !important;
    color: #0f172a !important;
}

[data-theme="light"] .form-control:focus,
[data-theme="light"] .form-select:focus,
[data-theme="light"] textarea.form-control:focus,
[data-theme="light"] input.form-control:focus {
    background: #ffffff !important;
    border-color: #6366f1 !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15) !important;
    color: #0f172a !important;
}

[data-theme="light"] .form-control::placeholder,
[data-theme="light"] textarea::placeholder,
[data-theme="light"] input::placeholder {
    color: #94a3b8 !important;
}

[data-theme="light"] .form-group label,
[data-theme="light"] label {
    color: #334155 !important;
}

[data-theme="light"] .form-select option {
    background: #ffffff !important;
    color: #0f172a !important;
}

[data-theme="light"] .modal-overlay {
    background: rgba(15, 23, 42, 0.45) !important;
}

[data-theme="light"] .modal-content {
    background: #ffffff !important;
    border-color: #e2e8f0 !important;
    color: #0f172a !important;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.18) !important;
}

[data-theme="light"] .modal-header {
    background: #ffffff !important;
    border-bottom-color: #f1f5f9 !important;
}

[data-theme="light"] .modal-footer {
    background: #f8fafc !important;
    border-top-color: #e2e8f0 !important;
}

[data-theme="light"] .notice-box,
[data-theme="light"] #reminderPreviewText {
    background: #eff6ff !important;
    border: 1px solid #bfdbfe !important;
    color: #1d4ed8 !important;
}

[data-theme="light"] .notice-box span,
[data-theme="light"] #reminderPreviewText span {
    color: #1e40af !important;
}

[data-theme="light"] .custom-table th {
    background: #f8fafc !important;
    color: #475569 !important;
    border-bottom: 2px solid #e2e8f0 !important;
}

[data-theme="light"] .custom-table td {
    border-bottom: 1px solid #f1f5f9 !important;
    color: #1e293b !important;
}

[data-theme="light"] .custom-table tr:hover td {
    background: #f8fafc !important;
}

[data-theme="light"] .nav-link {
    color: #475569;
}

[data-theme="light"] .nav-link:hover {
    color: #0f172a;
    background: #f1f5f9;
}

[data-theme="light"] .nav-link.active {
    background: #eef2ff;
    border-color: #c7d2fe;
    color: #4338ca;
}

[data-theme="light"] .badge-success {
    background: #dcfce7 !important;
    color: #15803d !important;
    border-color: #bbf7d0 !important;
}
[data-theme="light"] .badge-warning {
    background: #fef3c7 !important;
    color: #b45309 !important;
    border-color: #fde68a !important;
}
[data-theme="light"] .badge-danger {
    background: #fee2e2 !important;
    color: #b91c1c !important;
    border-color: #fecaca !important;
}
[data-theme="light"] .badge-info {
    background: #dbeafe !important;
    color: #1d4ed8 !important;
    border-color: #bfdbfe !important;
}
[data-theme="light"] .badge-purple {
    background: #f3e8ff !important;
    color: #7e22ce !important;
    border-color: #e9d5ff !important;
}

[data-theme="light"] .fc {
    --fc-border-color: #e2e8f0 !important;
    --fc-page-bg-color: #ffffff !important;
    --fc-neutral-bg-color: #f8fafc !important;
}

[data-theme="light"] .fc-theme-standard td,
[data-theme="light"] .fc-theme-standard th {
    border-color: #e2e8f0 !important;
}

[data-theme="light"] .fc .fc-col-header-cell-cushion {
    color: #475569 !important;
}

[data-theme="light"] .fc .fc-daygrid-day-number {
    color: #334155 !important;
}

[data-theme="light"] .fc .fc-toolbar-title {
    color: #0f172a !important;
}

[data-theme="light"] .fc .fc-button {
    background: #ffffff !important;
    color: #334155 !important;
    border: 1px solid #cbd5e1 !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04) !important;
}

[data-theme="light"] .fc .fc-button:hover {
    background: #f1f5f9 !important;
    border-color: #94a3b8 !important;
    color: #0f172a !important;
}

[data-theme="light"] .fc .fc-button-active,
[data-theme="light"] .fc .fc-button-primary:not(:disabled):active {
    background: #4f46e5 !important;
    color: #ffffff !important;
    border-color: #4f46e5 !important;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.35) !important;
}

[data-theme="light"] .fc-day-today {
    background: #eff6ff !important;
}

[data-theme="light"] .auth-card {
    background: #ffffff;
    border-color: #e2e8f0;
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .auth-wrapper {
    background: radial-gradient(circle at 50% 10%, #e2e8f0 0%, #f1f5f9 55%, #f8fafc 100%);
}

[data-theme="light"] .auth-card h2 {
    background: linear-gradient(135deg, #0f172a 0%, #334155 60%, #475569 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .role-switcher-container {
    background: #f1f5f9;
    border-color: #e2e8f0;
}

[data-theme="light"] .role-tab-btn {
    color: #64748b;
}

[data-theme="light"] .role-tab-btn.active {
    background: #ffffff;
    color: #4f46e5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .brand-title {
    background: linear-gradient(to right, #0f172a, #475569);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

[data-theme="light"] .tg-status-pill.connected {
    background: #e0f2fe;
    border-color: #7dd3fc;
    color: #0284c7;
}

[data-theme="light"] .tg-status-pill.disconnected {
    background: #fef3c7;
    border-color: #fde68a;
    color: #b45309;
}

[data-theme="light"] .swal2-popup {
    background: #ffffff !important;
    color: #0f172a !important;
    border: 1px solid #e2e8f0 !important;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25) !important;
}

[data-theme="light"] .swal2-title,
[data-theme="light"] .swal2-html-container {
    color: #0f172a !important;
}

/* ==========================================================================
   Reset & Global Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: var(--bg-base);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(139, 92, 246, 0.12) 0px, transparent 50%),
        radial-gradient(at 50% 100%, rgba(6, 182, 212, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.6);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

/* ==========================================================================
   Glassmorphic Components & Panels
   ========================================================================== */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    padding: 24px;
    transition: var(--transition);
}

.glass-panel:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

.glass-card {
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-3px);
    background: rgba(30, 41, 59, 0.6);
    border-color: var(--glass-border-focus);
    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   Buttons & Inputs
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: 0.925rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    text-decoration: none;
    outline: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #ffffff;
    box-shadow: var(--primary-glow);
}
.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
    border-color: var(--glass-border);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #ffffff;
}
.btn-success:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #ffffff;
}
.btn-danger:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.4);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.825rem;
    border-radius: var(--radius-sm);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.form-control, .form-select {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 0.875rem;
    line-height: 1.5;
    transition: var(--transition);
    outline: none;
    box-sizing: border-box;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.form-control::placeholder {
    color: var(--text-dim);
}

.form-select {
    cursor: pointer;
    padding-right: 28px;
}

.form-select option {
    background: var(--bg-surface);
    color: var(--text-main);
    padding: 8px 12px;
}

/* ==========================================================================
   Badges & Indicators
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.badge-success {
    background: var(--success-bg);
    color: #34d399;
    border: 1px solid var(--success-border);
}

.badge-warning {
    background: var(--warning-bg);
    color: #fbbf24;
    border: 1px solid var(--warning-border);
}

.badge-danger {
    background: var(--danger-bg);
    color: #f87171;
    border: 1px solid var(--danger-border);
}

.badge-info {
    background: var(--info-bg);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-purple {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

/* ==========================================================================
   Authentication View (Ultra-Modern Premium Glassmorphism)
   ========================================================================== */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 50% 10%, #171d33 0%, #0a0d18 55%, #05070e 100%);
}

.auth-wrapper::before {
    content: '';
    position: absolute;
    width: 480px;
    height: 480px;
    top: -120px;
    left: calc(50% - 240px);
    background: radial-gradient(circle, rgba(99, 102, 241, 0.28) 0%, rgba(139, 92, 246, 0.12) 45%, transparent 70%);
    border-radius: 50%;
    filter: blur(50px);
    pointer-events: none;
    z-index: 1;
    animation: auraFloat 8s ease-in-out infinite alternate;
}

.auth-wrapper::after {
    content: '';
    position: absolute;
    width: 380px;
    height: 380px;
    bottom: -100px;
    right: 15%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.18) 0%, rgba(59, 130, 246, 0.08) 50%, transparent 75%);
    border-radius: 50%;
    filter: blur(60px);
    pointer-events: none;
    z-index: 1;
}

@keyframes auraFloat {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(25px) scale(1.08); }
}

.auth-card {
    width: 100%;
    max-width: 430px;
    background: rgba(15, 23, 42, 0.72);
    backdrop-filter: blur(28px) saturate(190%);
    -webkit-backdrop-filter: blur(28px) saturate(190%);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 24px;
    padding: 44px 38px 40px;
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(99, 102, 241, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    text-align: center;
    position: relative;
    z-index: 10;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.auth-logo-badge {
    width: 68px;
    height: 68px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 20px;
    box-shadow: 0 10px 25px -4px rgba(99, 102, 241, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.35);
    position: relative;
}

.auth-logo-badge::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 23px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.4), rgba(217, 70, 239, 0.2));
    z-index: -1;
    filter: blur(4px);
}

.auth-card h2 {
    font-size: 1.85rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 6px;
    background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 60%, #cbd5e1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-card p.auth-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.45;
    margin-bottom: 28px;
}

.role-switcher-container {
    display: flex;
    background: rgba(11, 17, 33, 0.85);
    border-radius: 14px;
    padding: 5px;
    margin-bottom: 26px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
}

.role-tab-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 10px;
    border: none;
    background: transparent;
    color: #94a3b8;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.role-tab-btn:hover {
    color: #f8fafc;
}

.role-tab-btn.active {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.45);
}

.auth-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.auth-input-wrapper .form-control {
    padding-right: 42px;
}

.auth-input-icon-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.auth-input-icon-btn:hover {
    color: #f8fafc;
}

.btn-auth-submit {
    width: 100%;
    margin-top: 14px;
    padding: 13px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    border-radius: 12px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    color: #ffffff;
    border: none;
    box-shadow: 0 6px 20px -2px rgba(99, 102, 241, 0.45);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.25s ease;
}

.btn-auth-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -2px rgba(99, 102, 241, 0.6);
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #9333ea 100%);
}

.btn-auth-submit:active {
    transform: translateY(0);
}

/* ==========================================================================
   Layout: Sidebar & Main Content
   ========================================================================== */
.app-layout {
    display: flex;
    min-height: 100vh;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    position: relative;
}

.sidebar {
    width: 280px;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    position: fixed;
    height: 100vh;
    z-index: 50;
    transition: var(--transition);
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
    padding: 6px 4px 16px;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 20px;
    gap: 12px;
}

.brand-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 8px;
}

.brand-title {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #ffffff, #cbd5e1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    user-select: none;
}

.brand-actions-group {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.sidebar-nav {
    list-style: none;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}

.nav-link i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

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

.nav-link.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
    border-color: rgba(99, 102, 241, 0.4);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.15);
}

.sidebar-pending-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #ef4444;
    color: #ffffff;
    border-radius: 9999px;
    padding: 2px 7px;
    font-size: 0.72rem;
    font-weight: 700;
    min-width: 19px;
    height: 19px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.45);
    line-height: 1;
    flex-shrink: 0;
    margin-left: auto;
    transition: var(--transition);
}

.sidebar.collapsed .sidebar-pending-badge {
    position: absolute;
    top: 6px;
    right: 10px;
    padding: 2px 5px;
    font-size: 0.65rem;
    min-width: 16px;
    height: 16px;
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.6);
}

.sidebar-user {
    padding-top: 16px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    overflow: hidden;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    flex: 1;
    user-select: none;
}

.user-info:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
}

[data-theme="light"] .user-info:hover {
    background: #f1f5f9;
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: capitalize;
}

.main-wrapper {
    flex: 1;
    margin-left: 280px;
    padding: 32px 40px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    min-width: 0;
    max-width: 100%;
    overflow-x: hidden;
    box-sizing: border-box;
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    gap: 16px;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-only-btn {
    display: none;
}

.top-bar-title h1 {
    font-size: 1.75rem;
    margin-bottom: 4px;
}

.top-bar-title p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==========================================================================
   Dashboard Metrics Widgets
   ========================================================================== */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.metric-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

.metric-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.15);
}

.metric-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.metric-icon.indigo {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
}
.metric-icon.emerald {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}
.metric-icon.amber {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
}
.metric-icon.rose {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
}

.metric-content h3 {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
}

.metric-content span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================================================
   FullCalendar Custom Dark Glass Overrides
   ========================================================================== */
.fc {
    font-family: var(--font-body);
}

.fc-theme-standard .fc-scrollgrid {
    border: 1px solid var(--glass-border) !important;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.fc-theme-standard th, .fc-theme-standard td {
    border-color: var(--glass-border) !important;
}

.fc .fc-toolbar-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-main);
}

.fc .fc-button {
    background: rgba(30, 41, 59, 0.6) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--text-main) !important;
    border-radius: var(--radius-sm) !important;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 6px 12px !important;
    transition: var(--transition);
}

.fc .fc-button:hover {
    background: rgba(255, 255, 255, 0.12) !important;
}

.fc .fc-button-active, .fc .fc-button-primary:not(:disabled):active {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.5) !important;
}

.fc-daygrid-day-number {
    color: var(--text-muted) !important;
    font-weight: 600;
    padding: 8px !important;
}

.fc-day-today {
    background: rgba(99, 102, 241, 0.08) !important;
}

.fc-event {
    border-radius: 6px !important;
    padding: 2px 6px !important;
    font-size: 0.825rem !important;
    font-weight: 600 !important;
    cursor: pointer;
    border: none !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.fc-event:hover {
    filter: brightness(1.2);
    transform: scale(1.02);
}

/* ==========================================================================
   Tables & Data Grid
   ========================================================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.custom-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    text-align: left;
}

.custom-table th {
    background: rgba(15, 23, 42, 0.6);
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 14px 18px;
    border-bottom: 1px solid var(--glass-border);
}

.custom-table th:first-child {
    border-top-left-radius: var(--radius-md);
}
.custom-table th:last-child {
    border-top-right-radius: var(--radius-md);
}

.custom-table td {
    padding: 16px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.925rem;
    vertical-align: middle;
    transition: var(--transition);
}

.custom-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.custom-table tr:last-child td {
    border-bottom: none;
}

/* Checkbox Style */
.custom-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

/* ==========================================================================
   Progress Bar & Analytics
   ========================================================================== */
.progress-track {
    width: 100%;
    height: 12px;
    background: rgba(15, 23, 42, 0.8);
    border-radius: 9999px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    position: relative;
}

.progress-fill {
    height: 100%;
    border-radius: 9999px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.5);
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Modals & Overlays
   ========================================================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 15, 29, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

/* Ensure SweetAlert2 confirmation & alert popups always display in front of open modals */
.swal2-container {
    z-index: 100000 !important;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: #111827;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.75);
    transform: scale(0.95);
    transition: transform 0.25s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 28px;
    border-bottom: 1px solid var(--glass-border);
}

.modal-body {
    padding: 28px;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 28px;
    border-top: 1px solid var(--glass-border);
    background: rgba(15, 23, 42, 0.5);
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-close:hover {
    color: var(--text-main);
    transform: rotate(90deg);
}



/* ==========================================================================
   Responsive Adaptations & Modern Hamburger Sidebar Navigation
   ========================================================================== */
.btn-theme-toggle,
.btn-hamburger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.btn-theme-toggle:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: #f59e0b;
    color: #fbbf24;
    box-shadow: 0 0 15px rgba(251, 191, 36, 0.35);
    transform: scale(1.05);
}

.btn-hamburger:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.35);
    transform: scale(1.05);
}

[data-theme="light"] .btn-theme-toggle,
[data-theme="light"] .btn-hamburger {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #334155;
}

[data-theme="light"] .btn-theme-toggle:hover {
    background: #fef3c7;
    border-color: #f59e0b;
    color: #b45309;
}

[data-theme="light"] .btn-hamburger:hover {
    background: #e0e7ff;
    border-color: #6366f1;
    color: #4338ca;
}

/* ==========================================================================
   Desktop: Mini Sidebar (Icon-Only Collapsed Mode)
   ========================================================================== */
@media (min-width: 1025px) {
    .mobile-only-btn {
        display: none !important;
    }

    .sidebar {
        width: 280px;
        transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
        overflow-x: hidden;
    }

    .sidebar.collapsed {
        width: 78px !important;
        padding: 20px 8px !important;
    }

    .sidebar.collapsed .brand-header-row {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 10px;
    }

    .sidebar.collapsed .brand-title {
        display: none !important;
    }

    .sidebar.collapsed .brand-actions-group {
        flex-direction: column;
        gap: 8px;
        width: 100%;
        align-items: center;
        justify-content: center;
    }

    .sidebar.collapsed .brand-telegram-status {
        display: none !important;
    }

    .sidebar.collapsed .sidebar-nav .nav-link {
        justify-content: center;
        padding: 12px 0;
        gap: 0;
    }

    .sidebar.collapsed .sidebar-nav .nav-link span {
        display: none !important;
    }

    .sidebar.collapsed .sidebar-user {
        justify-content: center;
        padding: 12px 0 0;
    }

    .sidebar.collapsed .sidebar-user .user-details,
    .sidebar.collapsed .sidebar-user .btn-close {
        display: none !important;
    }

    .main-wrapper {
        margin-left: 280px;
        width: calc(100% - 280px);
        transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1), width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .main-wrapper.expanded {
        margin-left: 78px !important;
        width: calc(100% - 78px) !important;
    }
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 45;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.sidebar-backdrop.active {
    display: block;
    opacity: 1;
    pointer-events: auto;
}

/* ==========================================================================
   Responsive Grid & Action Helpers
   ========================================================================== */
.top-action-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.assignment-cards-grid,
.student-tasks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}

.course-layout-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .mobile-only-btn {
        display: inline-flex !important;
    }
    .sidebar {
        width: 280px;
        transform: translateX(-100%);
        z-index: 100;
        box-shadow: 0 0 50px rgba(0, 0, 0, 0.7);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .sidebar.mobile-open {
        transform: translateX(0);
        opacity: 1;
        pointer-events: auto;
    }
    .main-wrapper {
        margin-left: 0 !important;
        padding: 16px 12px !important;
        width: 100% !important;
        max-width: 100vw !important;
        box-sizing: border-box;
        overflow-x: hidden;
    }
    .top-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        margin-bottom: 20px;
    }
    .top-bar-left {
        display: flex;
        align-items: center;
        gap: 12px;
        width: 100%;
    }
    .top-bar-title h1 {
        font-size: 1.3rem;
        word-break: break-word;
    }
    .top-bar-title p {
        font-size: 0.8rem;
    }
    .top-bar-right {
        display: flex;
        flex-wrap: wrap;
        width: 100%;
        gap: 8px;
        justify-content: flex-start;
    }
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-bottom: 20px;
    }
}

@media (max-width: 900px) {
    .course-layout-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .stat-card {
        padding: 12px 14px;
    }
    .stat-card .stat-value {
        font-size: 1.35rem;
    }
    .stat-card .stat-label {
        font-size: 0.75rem;
    }
    .fc .fc-toolbar {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }
    .fc .fc-toolbar-chunk {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 6px;
    }
    .fc .fc-toolbar-title {
        font-size: 1.1rem !important;
        text-align: center;
    }
    .fc-button {
        padding: 5px 8px !important;
        font-size: 0.75rem !important;
    }
    .filter-bar,
    .controls-row {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 10px !important;
    }
    .filter-bar .form-control,
    .filter-bar .form-select,
    .filter-bar .btn {
        width: 100% !important;
    }
    .modal-content {
        width: 95% !important;
        max-height: 94vh;
        margin: 10px auto;
        border-radius: 18px;
    }
    .modal-header {
        padding: 16px;
    }
    .modal-body {
        padding: 16px;
    }
    .modal-footer {
        padding: 12px 16px;
        flex-direction: column-reverse;
        gap: 8px;
    }
    .modal-footer .btn {
        width: 100%;
    }
    .auth-card {
        padding: 30px 18px 24px;
        border-radius: 20px;
    }
    .auth-card h2 {
        font-size: 1.45rem;
    }
    .role-switcher-container {
        padding: 4px;
    }
    .role-tab-btn {
        padding: 8px 10px;
        font-size: 0.8rem;
    }
}

@media (max-width: 640px) {
    .assignment-cards-grid,
    .student-tasks-grid {
        grid-template-columns: 1fr !important;
        gap: 14px;
    }
    .top-action-group {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }
    .top-action-group .btn {
        flex: 1 1 auto;
        font-size: 0.78rem !important;
        padding: 8px 10px !important;
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    .brand-title {
        font-size: 1.2rem;
    }
    .top-bar-title h1 {
        font-size: 1.15rem;
    }
    .custom-table th,
    .custom-table td {
        padding: 10px 12px;
        font-size: 0.8rem;
    }
}

/* ==========================================================================
   Telegram Live Status & Verified Badge in Sidebar
   ========================================================================== */
.brand-telegram-status {
    margin-top: 10px;
    width: 100%;
}

.tg-status-pill {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 0.775rem;
    font-weight: 500;
    transition: var(--transition);
    gap: 6px;
}

.tg-status-pill.connected {
    background: rgba(0, 136, 204, 0.12);
    border: 1px solid rgba(0, 136, 204, 0.35);
    color: #38bdf8;
}

.tg-status-pill.connected .tg-status-content {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tg-status-pill.connected .verified-badge-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #38bdf8;
    filter: drop-shadow(0 0 4px rgba(56, 189, 248, 0.5));
}

.tg-status-pill.disconnected {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    color: #fbbf24;
}

.tg-status-pill.disconnected .tg-status-content {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tg-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #f59e0b;
    display: inline-block;
    box-shadow: 0 0 8px rgba(245, 158, 11, 0.6);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

.btn-tg-connect-mini {
    background: linear-gradient(135deg, #0088cc, #00aced);
    color: #ffffff;
    border: none;
    padding: 3px 8px;
    border-radius: 5px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(0, 136, 204, 0.3);
}

.btn-tg-connect-mini:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 136, 204, 0.5);
    color: #fff;
}

.btn-tg-unlink-mini {
    background: transparent;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    font-size: 0.7rem;
    transition: var(--transition);
}

.btn-tg-unlink-mini:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

/* Telegram Connect Modal Box */
.tg-connect-card {
    background: rgba(0, 136, 204, 0.08);
    border: 1px solid rgba(0, 136, 204, 0.25);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
}

.tg-connect-card h4 {
    color: #38bdf8;
    margin-bottom: 8px;
    font-size: 1.15rem;
}

.btn-tg-large {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, #0088cc, #0077b5);
    color: white;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 6px 20px rgba(0, 136, 204, 0.35);
    cursor: pointer;
    border: none;
}

.btn-tg-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 136, 204, 0.5);
    color: white;
}

/* ==========================================================================
   Modern Wave / Soundwave Equalizer Loading Overlay (Requested Design)
   ========================================================================== */
#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.78);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    z-index: 99999;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 22px;
}

.wave-loader {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    height: 64px;
}

.wave-loader .bar {
    width: 9px;
    height: 54px;
    background-color: #ffffff;
    border-radius: 999px;
    transform-origin: center;
    animation: waveBars 1.1s ease-in-out infinite;
    box-shadow: 0 0 14px rgba(255, 255, 255, 0.35);
}

.wave-loader .bar:nth-child(1) {
    animation-delay: -1.0s;
}

.wave-loader .bar:nth-child(2) {
    animation-delay: -0.8s;
}

.wave-loader .bar:nth-child(3) {
    animation-delay: -0.6s;
}

.wave-loader .bar:nth-child(4) {
    animation-delay: -0.8s;
}

.wave-loader .bar:nth-child(5) {
    animation-delay: -1.0s;
}

@keyframes waveBars {
    0%, 100% {
        transform: scaleY(0.35);
        opacity: 0.6;
    }
    50% {
        transform: scaleY(1);
        opacity: 1;
    }
}

#loadingText {
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 500;
    color: #ffffff;
    letter-spacing: 0.03em;
    margin: 0;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    animation: loadingPulseText 2s ease-in-out infinite;
}

@keyframes loadingPulseText {
    0%, 100% {
        opacity: 0.85;
    }
    50% {
        opacity: 1;
    }
}