/* ============================================================
   Montizera — Design System CSS
   Custom properties, base styles, component classes
   Works alongside TailwindCSS CDN
   ============================================================ */

/* ---- CSS Variables (Design Tokens) ---- */
:root {
    /* Brand Colors */
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-primary-light: #3B82F6;
    --color-primary-50: #EFF6FF;
    --color-primary-100: #DBEAFE;
    --color-primary-200: #BFDBFE;
    --color-primary-600: #2563EB;
    --color-primary-700: #1D4ED8;
    --color-primary-800: #1E40AF;

    /* Neutral / Navy */
    --color-dark-navy: #0F172A;
    --color-navy-800: #1E293B;
    --color-navy-700: #334155;
    --color-navy-600: #475569;
    --color-navy-500: #64748B;
    --color-navy-400: #94A3B8;
    --color-navy-300: #CBD5E1;
    --color-navy-200: #E2E8F0;
    --color-navy-100: #F1F5F9;

    /* Backgrounds */
    --color-bg: #F8FAFC;
    --color-card: #FFFFFF;
    --color-border: #E2E8F0;

    /* Status */
    --color-success: #16A34A;
    --color-success-light: #DCFCE7;
    --color-warning: #F59E0B;
    --color-warning-light: #FEF3C7;
    --color-danger: #EF4444;
    --color-danger-light: #FEE2E2;
    --color-info: #0EA5E9;
    --color-info-light: #E0F2FE;

    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-card-hover: 0 10px 25px rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;
    --bottom-nav-height: 64px;
    --container-max: 1280px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-dark-navy);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--color-navy-300);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-navy-400);
}

/* ---- Container ---- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---- Card ---- */
.card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-card-hover);
}

.card-interactive:hover {
    transform: translateY(-2px);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1.25;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    user-select: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.btn-secondary {
    background: var(--color-primary-50);
    color: var(--color-primary);
    border: 1px solid var(--color-primary-200);
}
.btn-secondary:hover {
    background: var(--color-primary-100);
    color: var(--color-primary-dark);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}
.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn-white {
    background: #fff;
    color: var(--color-dark-navy);
    border: 1px solid var(--color-border);
}
.btn-white:hover {
    background: var(--color-bg);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}
.btn-danger:hover {
    background: #DC2626;
}

.btn-success {
    background: var(--color-success);
    color: #fff;
}
.btn-success:hover {
    background: #15803D;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
    border-radius: var(--radius-xl);
}

.btn-sm {
    padding: 0.375rem 1rem;
    font-size: var(--font-size-xs);
}

.btn-icon {
    padding: 0.5rem;
    border-radius: var(--radius-md);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ---- Form Inputs ---- */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-navy-700);
    margin-bottom: 0.375rem;
}

.form-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-dark-navy);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-input::placeholder {
    color: var(--color-navy-400);
}

.form-input-error {
    border-color: var(--color-danger);
}

.form-help {
    font-size: var(--font-size-xs);
    color: var(--color-navy-500);
    margin-top: 0.25rem;
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    margin-top: 0.25rem;
}

textarea.form-input {
    min-height: 100px;
    resize: vertical;
}

/* ---- Badges ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.625rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background: var(--color-primary-100);
    color: var(--color-primary-700);
}

.badge-success {
    background: var(--color-success-light);
    color: var(--color-success);
}

.badge-warning {
    background: var(--color-warning-light);
    color: #B45309;
}

.badge-danger {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

.badge-info {
    background: var(--color-info-light);
    color: var(--color-info);
}

/* ---- Stat Card ---- */
.stat-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    padding: 1.25rem;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-card-value {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-dark-navy);
    line-height: 1.2;
}

.stat-card-label {
    font-size: var(--font-size-sm);
    color: var(--color-navy-500);
    font-weight: 500;
}

.stat-change {
    font-size: var(--font-size-xs);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 2px;
}
.stat-change.positive { color: var(--color-success); }
.stat-change.negative { color: var(--color-danger); }

/* ---- Course Card ---- */
.course-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

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

.course-card-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary-800), var(--color-primary));
}

.course-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.course-card:hover .course-card-thumb img {
    transform: scale(1.05);
}

.course-card-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
}

.course-card-body {
    padding: 1.25rem;
}

.course-card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-dark-navy);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.course-card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: var(--font-size-xs);
    color: var(--color-navy-500);
    margin-bottom: 0.75rem;
}

.course-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.course-card-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.price-current {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-primary);
}

.price-original {
    font-size: var(--font-size-sm);
    color: var(--color-navy-400);
    text-decoration: line-through;
}

/* ---- Progress Bar ---- */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--color-navy-100);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* ---- Toast / Alert ---- */
.toast {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 10000;
    min-width: 320px;
    max-width: 480px;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    animation: slideInRight 0.3s ease-out, fadeOut 0.3s ease-in 4.7s forwards;
    pointer-events: auto;
}

.toast-success {
    background: var(--color-success-light);
    border: 1px solid var(--color-success);
    color: #166534;
}

.toast-error {
    background: var(--color-danger-light);
    border: 1px solid var(--color-danger);
    color: #991B1B;
}

.toast-warning {
    background: var(--color-warning-light);
    border: 1px solid var(--color-warning);
    color: #92400E;
}

.toast-info {
    background: var(--color-info-light);
    border: 1px solid var(--color-info);
    color: #0C4A6E;
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0.6;
    padding: 0;
    margin-left: auto;
    flex-shrink: 0;
}
.toast-close:hover { opacity: 1; }

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

@keyframes fadeOut {
    to { opacity: 0; transform: translateY(-10px); }
}

/* ---- Accordion ---- */
.accordion-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: 0.75rem;
    overflow: hidden;
    background: var(--color-card);
}

.accordion-trigger {
    width: 100%;
    padding: 1rem 1.25rem;
    background: none;
    border: none;
    text-align: left;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-dark-navy);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    transition: background var(--transition-fast);
}

.accordion-trigger:hover {
    background: var(--color-navy-100);
}

.accordion-trigger[aria-expanded="true"] {
    background: var(--color-primary-50);
    color: var(--color-primary);
}

.accordion-icon {
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.accordion-content-inner {
    padding: 0 1.25rem 1rem;
    font-size: var(--font-size-sm);
    color: var(--color-navy-600);
    line-height: 1.7;
}

/* ---- Tabs ---- */
.tabs {
    display: flex;
    gap: 0.25rem;
    border-bottom: 2px solid var(--color-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tab-btn {
    padding: 0.75rem 1.25rem;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-navy-500);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    color: var(--color-primary);
}

.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    font-weight: 600;
}

/* ---- Sidebar (Professional) ---- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    height: 100dvh;
    background: linear-gradient(180deg, #0B1120 0%, #0F172A 40%, #131C2E 100%);
    color: #fff;
    z-index: 50;
    overflow-y: auto;
    overflow-x: hidden;
    transition: transform var(--transition-base);
    display: flex;
    flex-direction: column;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }
.sidebar::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

.sidebar-logo {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    position: sticky;
    top: 0;
    background: inherit;
    z-index: 1;
    display: flex;
    align-items: center;
}

.sidebar-logo a {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
    color: inherit;
}

.sidebar-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #3B82F6, #2563EB);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    flex-shrink: 0;
}

.sidebar-logo-icon span {
    font-size: 1.125rem;
    font-weight: 900;
    color: #fff;
    line-height: 1;
}

.sidebar-nav {
    padding: 0.75rem 0;
    flex: 1;
}

.sidebar-section-title {
    padding: 1.25rem 1.5rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255,255,255,0.3);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5625rem 1.5rem;
    font-size: var(--font-size-sm);
    color: rgba(255,255,255,0.6);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    position: relative;
    text-decoration: none;
}

.sidebar-link:hover {
    color: rgba(255,255,255,0.95);
    background: rgba(255,255,255,0.04);
    border-left-color: rgba(255,255,255,0.15);
}

.sidebar-link.active {
    color: #fff;
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.2), rgba(37, 99, 235, 0.05));
    border-left-color: var(--color-primary);
    font-weight: 500;
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--color-primary);
    border-radius: 0 3px 3px 0;
    box-shadow: 0 0 8px rgba(37, 99, 235, 0.5);
}

.sidebar-link i,
.sidebar-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.85;
}

.sidebar-link.active i,
.sidebar-link.active svg {
    opacity: 1;
}

.sidebar-link .sidebar-badge {
    margin-left: auto;
    padding: 0.125rem 0.5rem;
    font-size: 0.625rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    line-height: 1.4;
}

/* Sidebar user section at bottom */
.sidebar-user {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.06);
    margin-top: auto;
}

/* ---- Header (Glassmorphism) ---- */
.top-header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 40;
}

@supports not (backdrop-filter: blur(12px)) {
    .top-header {
        background: var(--color-card);
    }
}

/* ---- Bottom Navigation (Mobile) — Using component class ---- */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    display: none;
    align-items: stretch;
    justify-content: space-around;
    z-index: 45;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px));
}

.mobile-bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.1875rem;
    font-size: 0.625rem;
    font-weight: 500;
    color: var(--color-navy-400);
    text-decoration: none;
    padding: 0.5rem 0.15rem;
    flex: 1;
    min-width: 0;
    transition: color var(--transition-fast);
    position: relative;
    -webkit-tap-highlight-color: transparent;
}

.mobile-bottom-nav-item > span:last-child {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    line-height: 1.1;
    letter-spacing: -0.01em;
}

.mobile-bottom-nav-item:active {
    transform: scale(0.95);
}

.mobile-bottom-nav-item.active {
    color: var(--color-primary);
}

.mobile-bottom-nav-item.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 0 0 3px 3px;
}

.mobile-bottom-nav-item i,
.mobile-bottom-nav-item svg {
    width: 22px;
    height: 22px;
}

/* Blinking Red Notification Dot on Bottom Nav Icons */
.blinking-red-dot {
    position: absolute;
    top: -2px;
    right: -4px;
    width: 8px;
    height: 8px;
    background-color: #ef4444;
    border-radius: 9999px;
    box-shadow: 0 0 0 2px #ffffff;
    z-index: 2;
    animation: blink-dot-fade 1.2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.blinking-red-dot::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 9999px;
    background-color: rgba(239, 68, 68, 0.55);
    animation: blink-dot-ping 1.4s cubic-bezier(0, 0, 0.2, 1) infinite;
    z-index: -1;
}

[data-theme="dark"] .blinking-red-dot,
html.dark .blinking-red-dot {
    box-shadow: 0 0 0 2px #0f172a;
}

@keyframes blink-dot-fade {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.35;
        transform: scale(0.85);
    }
}

@keyframes blink-dot-ping {
    0% {
        transform: scale(1);
        opacity: 0.9;
    }
    75%, 100% {
        transform: scale(2.4);
        opacity: 0;
    }
}

/* Legacy .bottom-nav class (keep for backward compat) */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px));
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    display: none;
    align-items: center;
    justify-content: space-around;
    z-index: 45;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1875rem;
    font-size: 0.625rem;
    font-weight: 500;
    color: var(--color-navy-400);
    text-decoration: none;
    padding: 0.5rem;
    transition: color var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.bottom-nav-item.active {
    color: var(--color-primary);
}

.bottom-nav-item i,
.bottom-nav-item svg {
    width: 22px;
    height: 22px;
}

/* ---- Dashboard Layout ---- */
.dashboard-wrapper {
    display: flex;
    min-height: 100vh;
    min-height: 100dvh;
}

.dashboard-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 1.5rem;
    padding-bottom: 2rem;
    min-width: 0; /* prevent flex overflow */
}

/* ---- Sidebar Overlay ---- */
#sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    z-index: 45;
    opacity: 0;
    transition: opacity var(--transition-base);
    cursor: pointer;
}

#sidebar-overlay.active {
    opacity: 1;
    display: block !important;
}

/* ---- Table ---- */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    padding: 0.75rem 1rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-navy-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: left;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.data-table td {
    padding: 0.75rem 1rem;
    font-size: var(--font-size-sm);
    color: var(--color-dark-navy);
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.data-table tr:hover td {
    background: var(--color-navy-100);
}

/* ---- Pagination ---- */
.pagination {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    justify-content: center;
    padding: 1.5rem 0;
    flex-wrap: wrap;
}

.pagination a, .pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.5rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    color: var(--color-navy-600);
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--color-primary-50);
    color: var(--color-primary);
}

.pagination .active {
    background: var(--color-primary);
    color: #fff;
}

/* ---- Avatar ---- */
.avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    font-weight: 700;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}
.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-sm { width: 32px; height: 32px; font-size: var(--font-size-xs); }
.avatar-md { width: 40px; height: 40px; }
.avatar-lg { width: 56px; height: 56px; font-size: var(--font-size-lg); }
.avatar-xl { width: 80px; height: 80px; font-size: var(--font-size-2xl); }

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--color-navy-400);
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    color: var(--color-navy-300);
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-navy-600);
    margin-bottom: 0.5rem;
}

.empty-state-text {
    font-size: var(--font-size-sm);
    max-width: 400px;
    margin: 0 auto;
}

/* ---- Loading Spinner ---- */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-navy-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ---- Skeleton Loading ---- */
.skeleton {
    background: linear-gradient(90deg, var(--color-navy-100) 25%, var(--color-navy-200) 50%, var(--color-navy-100) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-card);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 520px;
    max-height: 85vh;
    overflow-y: auto;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

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

.modal-body {
    padding: 1.5rem;
}

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

/* ---- Hero Gradient ---- */
.hero-gradient {
    background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 40%, #2563EB 100%);
}

/* ---- PWA Install Banner ---- */
.pwa-install-banner {
    position: fixed;
    bottom: -120px;
    left: 1rem;
    right: 1rem;
    max-width: 480px;
    margin: 0 auto;
    background: var(--color-card);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.15);
    padding: 1rem 1.25rem;
    z-index: 200;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    transition: bottom var(--transition-slow);
    border: 1px solid var(--color-border);
}

.pwa-install-banner.visible {
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
}

.pwa-install-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 200px;
}

.pwa-install-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.pwa-install-icon svg {
    width: 100%;
    height: 100%;
}

.pwa-install-text strong {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-dark-navy);
}

.pwa-install-text span {
    font-size: var(--font-size-xs);
    color: var(--color-navy-500);
}

.pwa-install-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

/* ---- PWA Notification Prompt Banner ---- */
.pwa-notif-banner {
    position: fixed;
    bottom: -160px;
    left: 1rem;
    right: 1rem;
    max-width: 520px;
    margin: 0 auto;
    background: var(--color-card, #ffffff);
    border-radius: var(--radius-xl, 1rem);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
    padding: 1rem 1.25rem;
    z-index: 999;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    transition: bottom 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid var(--color-border, #e2e8f0);
}

.pwa-notif-banner.visible {
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
}

@media (max-width: 1023px) {
    .pwa-notif-banner.visible {
        bottom: calc(var(--bottom-nav-height, 60px) + 0.75rem + env(safe-area-inset-bottom, 0px));
    }
}

.pwa-notif-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 200px;
}

.pwa-notif-icon {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
}

.pwa-notif-text strong {
    display: block;
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 700;
    color: var(--color-dark-navy, #0f172a);
}

.pwa-notif-text span {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-navy-500, #64748b);
    line-height: 1.3;
    display: block;
}

.pwa-notif-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

/* ---- Ripple Effect ---- */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple 0.6s ease-out;
    pointer-events: none;
    width: 100px;
    height: 100px;
    margin-left: -50px;
    margin-top: -50px;
}

@keyframes ripple {
    to { transform: scale(4); opacity: 0; }
}

/* ---- Responsive ---- */

/* Desktop (1024px+) — sidebar visible, no bottom nav */
@media (min-width: 1024px) {
    .sidebar {
        transform: translateX(0);
    }
    .mobile-bottom-nav {
        display: none !important;
    }
}

/* Tablet & below (< 1024px) — sidebar hidden by default */
@media (max-width: 1023px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
        box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
    }
    .dashboard-content {
        margin-left: 0;
    }
}

/* Tablet & Mobile (< 1024px) — bottom nav visible, content cleared */
@media (max-width: 1023px) {
    .mobile-bottom-nav,
    .bottom-nav {
        display: flex;
    }
    .dashboard-content {
        padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px) + 1rem);
    }
}

/* Mobile (< 768px) — tighter spacing & compact components */
@media (max-width: 767px) {
    .dashboard-content {
        padding: 0.75rem;
        padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px) + 0.75rem);
    }

    .container {
        padding: 0 0.75rem;
    }

    .toast {
        left: 0.75rem;
        right: 0.75rem;
        min-width: auto;
        max-width: none;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-card-value {
        font-size: var(--font-size-xl);
    }

    .data-table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .top-header {
        padding: 0 0.75rem;
    }

    .modal {
        max-height: 90vh;
        border-radius: var(--radius-xl);
    }

    .pwa-install-banner {
        left: 0.5rem;
        right: 0.5rem;
    }

    .card {
        border-radius: var(--radius-lg);
    }

    .course-card-body {
        padding: 1rem;
    }
}

/* Small mobile (< 400px) — extreme tightening */
@media (max-width: 399px) {
    :root {
        --font-size-base: 0.9375rem;
        --font-size-sm: 0.8125rem;
        --font-size-xs: 0.6875rem;
    }

    .dashboard-content {
        padding: 0.5rem;
        padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px) + 0.5rem);
    }

    .top-header h1 {
        font-size: var(--font-size-base) !important;
    }

    .stat-card-value {
        font-size: var(--font-size-lg);
    }

    .pwa-install-banner {
        flex-direction: column;
        text-align: center;
    }

    .pwa-install-content {
        justify-content: center;
    }
}

/* ---- Safe Area Insets for notched devices ---- */
@supports (padding: env(safe-area-inset-bottom)) {
    .dashboard-content {
        padding-left: max(env(safe-area-inset-left, 0px), 0.75rem);
        padding-right: max(env(safe-area-inset-right, 0px), 0.75rem);
    }
}

/* ---- Print Styles ---- */
@media print {
    .sidebar, .top-header, .mobile-bottom-nav, .bottom-nav, .pwa-install-banner, .toast {
        display: none !important;
    }
    .dashboard-content {
        margin-left: 0 !important;
        padding: 0 !important;
    }
}

/* ---- Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ---- Utility Classes ---- */
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-muted { color: var(--color-navy-500) !important; }
.bg-primary-50 { background: var(--color-primary-50) !important; }
.bg-success-light { background: var(--color-success-light) !important; }
.bg-warning-light { background: var(--color-warning-light) !important; }
.bg-danger-light { background: var(--color-danger-light) !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ============================================================
   DARK MODE SYSTEM
   Works via [data-theme="dark"] and .dark class on <html>
   ============================================================ */
:root[data-theme="dark"],
html.dark {
    --color-bg: #090D16;
    --color-card: #111827;
    --color-border: #1F293D;
    --color-dark-navy: #F8FAFC;
    --color-navy-900: #F8FAFC;
    --color-navy-800: #F1F5F9;
    --color-navy-700: #E2E8F0;
    --color-navy-600: #CBD5E1;
    --color-navy-500: #94A3B8;
    --color-navy-400: #64748B;
    --color-navy-300: #475569;
    --color-navy-200: #334155;
    --color-navy-100: #1E293B;
    --color-navy-50: #0F172A;
}

[data-theme="dark"] body,
html.dark body {
    background-color: #090D16 !important;
    color: #F8FAFC;
}

[data-theme="dark"] .bg-white,
html.dark .bg-white {
    background-color: #111827 !important;
    color: #F8FAFC;
}

[data-theme="dark"] .bg-navy-50,
html.dark .bg-navy-50 {
    background-color: #090D16 !important;
}

[data-theme="dark"] .bg-navy-50\/50,
html.dark .bg-navy-50\/50 {
    background-color: rgba(17, 24, 39, 0.6) !important;
}

[data-theme="dark"] .border-navy-100,
[data-theme="dark"] .border-navy-200,
html.dark .border-navy-100,
html.dark .border-navy-200 {
    border-color: #1F293D !important;
}

[data-theme="dark"] .text-navy-900,
html.dark .text-navy-900 {
    color: #F8FAFC !important;
}

[data-theme="dark"] .text-navy-800,
html.dark .text-navy-800 {
    color: #F1F5F9 !important;
}

[data-theme="dark"] .text-navy-700,
html.dark .text-navy-700 {
    color: #E2E8F0 !important;
}

[data-theme="dark"] .text-navy-600,
html.dark .text-navy-600 {
    color: #CBD5E1 !important;
}

[data-theme="dark"] .text-navy-500,
html.dark .text-navy-500 {
    color: #94A3B8 !important;
}

[data-theme="dark"] .top-header,
html.dark .top-header {
    background: rgba(17, 24, 39, 0.85) !important;
    border-color: #1F293D !important;
}

[data-theme="dark"] nav.bg-white,
html.dark nav.bg-white {
    background-color: rgba(17, 24, 39, 0.95) !important;
    border-color: #1F293D !important;
}

[data-theme="dark"] .mobile-bottom-nav,
html.dark .mobile-bottom-nav {
    background: rgba(17, 24, 39, 0.95) !important;
    border-color: #1F293D !important;
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] textarea.form-input,
html.dark .form-input,
html.dark .form-select,
html.dark textarea.form-input {
    background-color: #0B0F19 !important;
    border-color: #26354D !important;
    color: #FFFFFF !important;
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
html.dark .form-input:focus,
html.dark .form-select:focus {
    border-color: var(--color-primary) !important;
}

[data-theme="dark"] .table-container,
[data-theme="dark"] .table,
html.dark .table-container,
html.dark .table {
    background-color: #111827 !important;
    border-color: #1F293D !important;
}

[data-theme="dark"] .table th,
html.dark .table th {
    background-color: #0B0F19 !important;
    color: #CBD5E1 !important;
    border-color: #1F293D !important;
}

[data-theme="dark"] .table td,
html.dark .table td {
    border-color: #1F293D !important;
}

[data-theme="dark"] .table tr:hover td,
html.dark .table tr:hover td {
    background-color: rgba(31, 41, 61, 0.4) !important;
}

[data-theme="dark"] .modal-content,
[data-theme="dark"] .modal-box,
html.dark .modal-content,
html.dark .modal-box {
    background-color: #111827 !important;
    border-color: #1F293D !important;
    color: #F8FAFC !important;
}

[data-theme="dark"] .btn-white,
html.dark .btn-white {
    background: #1F293D !important;
    color: #F8FAFC !important;
    border-color: #334155 !important;
}

[data-theme="dark"] .btn-white:hover,
html.dark .btn-white:hover {
    background: #27354E !important;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 0.625rem;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-navy-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    background: var(--color-navy-100);
    color: var(--color-primary);
}

[data-theme="dark"] .theme-toggle-btn,
html.dark .theme-toggle-btn {
    border-color: #26354D;
    color: #F59E0B;
}

[data-theme="dark"] .theme-toggle-btn:hover,
html.dark .theme-toggle-btn:hover {
    background: #1F293D;
    color: #FCD34D;
}

/* ---- Golden Token & Credit Badge Styling ---- */
.golden-token-icon {
    display: inline-block;
    vertical-align: -0.125em;
    filter: drop-shadow(0 1px 2px rgba(217, 119, 6, 0.45));
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.25s ease;
}

.golden-token-icon:hover,
a:hover .golden-token-icon,
button:hover .golden-token-icon {
    transform: scale(1.15) rotate(6deg);
    filter: drop-shadow(0 2px 5px rgba(245, 158, 11, 0.75));
}

/* ============================================================
   PWA ENHANCEMENTS: INSTALL BANNER, IOS GUIDE & WAKE LOCK PILL
   ============================================================ */

/* Floating Install Banner */
.pwa-install-banner {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(120%);
    width: calc(100% - 32px);
    max-width: 480px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(226, 232, 240, 0.9);
    border-radius: 1.25rem;
    box-shadow: 0 20px 35px -5px rgba(15, 23, 42, 0.15), 0 8px 16px -6px rgba(15, 23, 42, 0.1);
    padding: 16px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    opacity: 0;
    pointer-events: none;
}

[data-theme="dark"] .pwa-install-banner,
html.dark .pwa-install-banner {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(51, 65, 85, 0.9);
    box-shadow: 0 20px 35px -5px rgba(0, 0, 0, 0.5);
    color: #F8FAFC;
}

.pwa-install-banner.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.pwa-install-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pwa-install-icon-wrapper {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, #2563EB, #4F46E5);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
    overflow: hidden;
}

.pwa-install-icon-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pwa-install-info {
    flex: 1;
    min-width: 0;
}

.pwa-install-title {
    font-size: 0.9375rem;
    font-weight: 800;
    color: var(--color-navy-900, #0F172A);
    line-height: 1.25;
}

[data-theme="dark"] .pwa-install-title,
html.dark .pwa-install-title {
    color: #FFFFFF;
}

.pwa-install-subtitle {
    font-size: 0.75rem;
    color: var(--color-navy-500, #64748B);
    margin-top: 2px;
}

[data-theme="dark"] .pwa-install-subtitle,
html.dark .pwa-install-subtitle {
    color: #94A3B8;
}

.pwa-install-badges {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 4px;
}

.pwa-install-badge {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 9999px;
    background: #EFF6FF;
    color: #1D4ED8;
}

[data-theme="dark"] .pwa-install-badge,
html.dark .pwa-install-badge {
    background: rgba(37, 99, 235, 0.2);
    color: #93C5FD;
}

.pwa-install-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pwa-install-btn-main {
    flex: 1;
    background: linear-gradient(135deg, #2563EB, #1D4ED8);
    color: #FFFFFF;
    font-size: 0.8125rem;
    font-weight: 700;
    padding: 10px 16px;
    border-radius: 0.75rem;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transition: all 0.2s ease;
}

.pwa-install-btn-main:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}

.pwa-install-btn-dismiss {
    background: transparent;
    color: var(--color-navy-500, #64748B);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 10px 14px;
    border-radius: 0.75rem;
    border: 1px solid var(--color-navy-200, #E2E8F0);
    cursor: pointer;
    transition: all 0.2s ease;
}

[data-theme="dark"] .pwa-install-btn-dismiss,
html.dark .pwa-install-btn-dismiss {
    border-color: #334155;
    color: #94A3B8;
}

.pwa-install-btn-dismiss:hover {
    background: var(--color-navy-100, #F1F5F9);
}

/* iOS Safari Install Guide Modal */
.pwa-ios-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    z-index: 10000;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 16px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.pwa-ios-modal-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.pwa-ios-modal-sheet {
    background: #FFFFFF;
    border-radius: 1.5rem 1.5rem 1.25rem 1.25rem;
    padding: 24px;
    max-width: 440px;
    width: 100%;
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

[data-theme="dark"] .pwa-ios-modal-sheet,
html.dark .pwa-ios-modal-sheet {
    background: #1E293B;
    color: #F8FAFC;
}

.pwa-ios-modal-overlay.visible .pwa-ios-modal-sheet {
    transform: translateY(0);
}

/* Screen Wake Lock Floating Pill */
.screen-wake-lock-pill {
    position: absolute;
    top: 14px;
    right: 14px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    color: #F8FAFC;
    font-size: 0.6875rem;
    font-weight: 700;
    padding: 5px 10px;
    border-radius: 9999px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    z-index: 30;
    border: 1px solid rgba(255, 255, 255, 0.15);
    pointer-events: none;
    opacity: 0;
    transform: translateY(-8px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.screen-wake-lock-pill.active {
    opacity: 1;
    transform: translateY(0);
}

.screen-wake-lock-pill .wake-dot {
    width: 6px;
    height: 6px;
    background: #10B981;
    border-radius: 50%;
    box-shadow: 0 0 8px #10B981;
    animation: pulse 2s infinite;
}