/* PyTalk - Premium Glassmorphism Design System */
/* ============================================= */

:root {
    --bg-primary: #07070f;
    --bg-secondary: #0c0c18;
    --bg-card: #0f0f1a;
    --bg-hover: #161625;
    --bg-elevated: #1a1a2e;
    --accent-primary: #818cf8;
    --accent-secondary: #a78bfa;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #818cf8 50%, #a78bfa 100%);
    --accent-glow: rgba(129, 140, 248, 0.25);
    --accent-glow-strong: rgba(129, 140, 248, 0.4);
    --cta-color: #e11d48;
    --cta-hover: #be123c;
    --cta-glow: rgba(225, 29, 72, 0.3);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.1);
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px var(--accent-glow);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(16px);
    --navbar-bg: rgba(7, 7, 15, 0.6);
    --toggler-filter: invert(1);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-hover: #e2e8f0;
    --bg-elevated: #f8fafc;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #818cf8 50%, #a78bfa 100%);
    --accent-glow: rgba(99, 102, 241, 0.2);
    --accent-glow-strong: rgba(99, 102, 241, 0.3);
    --cta-color: #e11d48;
    --cta-hover: #be123c;
    --cta-glow: rgba(225, 29, 72, 0.2);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-light: rgba(0, 0, 0, 0.12);
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px var(--accent-glow);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-bg-hover: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-blur: blur(16px);
    --navbar-bg: rgba(255, 255, 255, 0.7);
    --toggler-filter: invert(0);
}

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

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Push footer to bottom on short pages */
.site-footer {
    margin-top: auto !important;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', 'DM Sans', sans-serif;
    font-weight: 600;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Bootstrap Text Utility Overrides */
.text-muted { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-primary { color: var(--text-primary) !important; }
.text-white { color: #ffffff !important; }
.text-dark { color: var(--text-primary) !important; }
p { color: var(--text-primary); }
small { color: var(--text-secondary); }
label { color: var(--text-primary); }
strong, b, .fw-bold { color: var(--text-primary); }
.text-center { color: var(--text-primary); }

/* Card text elements */
.card-header h3, .card-header h4, .card-header h5, .card-header h6,
.card-body h3, .card-body h4, .card-body h5, .card-body h6,
.card-body p, .card-body strong, .card-body ul li { color: var(--text-primary); }
.row strong { color: var(--text-primary); }
.row .col-md-4, .row .col-md-6, .row .col-md-8 { color: var(--text-primary); }

/* ===== FLOATING NAVBAR ===== */
.navbar {
    background: var(--navbar-bg) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1rem;
    z-index: 1030;
    position: fixed;
    top: 12px;
    left: 16px;
    right: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-brand:hover { opacity: 0.9; }

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 0.875rem !important;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    background: transparent !important;
}

.nav-link:hover {
    color: var(--text-primary) !important;
    background: var(--glass-bg-hover) !important;
}

.nav-link.active {
    color: var(--accent-primary) !important;
    background: transparent !important;
}

/* Spacer for fixed navbar */
body { padding-top: 80px; }

/* Tab styling */
.nav-tabs { border-bottom-color: var(--border-color) !important; }
.nav-tabs .nav-link {
    color: var(--text-secondary) !important;
    background: transparent !important;
    border: none !important;
    border-bottom: 2px solid transparent !important;
    border-radius: 0 !important;
}
.nav-tabs .nav-link:hover {
    color: var(--text-primary) !important;
    background: transparent !important;
    border-color: transparent !important;
    border-bottom-color: var(--border-color) !important;
}
.nav-tabs .nav-link.active {
    color: var(--accent-primary) !important;
    background: transparent !important;
    border-color: transparent !important;
    border-bottom-color: var(--accent-primary) !important;
}
.nav-pills .nav-link {
    color: var(--text-secondary) !important;
    background: transparent !important;
}
.nav-pills .nav-link:hover {
    color: var(--text-primary) !important;
    background: var(--bg-hover) !important;
}
.nav-pills .nav-link.active {
    color: #fff !important;
    background: var(--accent-primary) !important;
}
.tab-content, .tab-pane { color: var(--text-primary); }

.navbar-toggler { border-color: var(--glass-border); }
.navbar-toggler-icon { filter: var(--toggler-filter); }

/* ===== DROPDOWNS ===== */
.dropdown-menu {
    background: var(--bg-card) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border) !important;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    z-index: 1050 !important;
}

.dropdown-menu-dark {
    background: var(--bg-card) !important;
    border-color: var(--glass-border) !important;
}
.dropdown-menu-dark .dropdown-item { color: var(--text-primary) !important; }

.dropdown-item {
    color: var(--text-primary) !important;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    background: transparent;
}
.dropdown-item:hover, .dropdown-item:focus {
    background: var(--glass-bg-hover) !important;
    color: var(--text-primary) !important;
}
.dropdown-item:active {
    background: var(--accent-primary) !important;
    color: white !important;
}
.dropdown-item svg { color: var(--text-secondary); }
.dropdown-item:hover svg { color: var(--text-primary); }
.dropdown-divider { border-color: var(--border-color); margin: 0.5rem 0; opacity: 1; }

/* ===== GLASSMORPHIC CARDS ===== */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: visible;
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
}
.card-header h3 { margin: 0; font-size: 1.2rem; }
.card-body { padding: 1.5rem; }

[data-theme="light"] .card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

/* ===== BUTTONS ===== */
.btn {
    font-family: 'DM Sans', sans-serif;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-gradient) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow-strong);
    background: var(--accent-gradient) !important;
    color: #ffffff !important;
}
[data-theme="light"] .btn-primary,
[data-theme="light"] .btn-primary:hover,
[data-theme="light"] .btn-primary:focus,
[data-theme="light"] .btn-primary:active { color: #ffffff !important; }

.btn-outline-primary {
    background: transparent;
    border: 1.5px solid var(--accent-primary);
    color: var(--accent-primary);
}
.btn-outline-primary:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-outline-secondary {
    background: var(--glass-bg);
    border: 1.5px solid var(--glass-border);
    color: var(--text-secondary);
    backdrop-filter: var(--glass-blur);
}
.btn-outline-secondary:hover {
    background: var(--glass-bg-hover);
    border-color: var(--border-light);
    color: var(--text-primary);
}

.btn-cta {
    background: var(--cta-color);
    color: #ffffff;
    box-shadow: 0 4px 20px var(--cta-glow);
}
.btn-cta:hover {
    background: var(--cta-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--cta-glow);
    color: #ffffff;
}

.btn-success { background: var(--success); }
.btn-success:hover { background: #16a34a; transform: translateY(-2px); }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* ===== FORMS ===== */
.form-control {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 0.875rem 1rem;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}
.form-control:focus {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow), 0 0 20px var(--accent-glow);
    color: var(--text-primary);
    outline: none;
}
.form-control::placeholder { color: var(--text-muted); }
.form-control:disabled, .form-control[disabled], .form-control[readonly] {
    background: var(--bg-hover);
    border-color: var(--border-color);
    color: var(--text-secondary);
    opacity: 1;
    cursor: not-allowed;
}

[data-theme="light"] .form-control {
    background: rgba(0, 0, 0, 0.03);
}
[data-theme="light"] .form-control:focus {
    background: rgba(0, 0, 0, 0.02);
}

.form-select {
    background-color: rgba(255, 255, 255, 0.04) !important;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 0.875rem 1rem;
    padding-right: 2.5rem !important;
    font-size: 0.95rem;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e") !important;
    background-repeat: no-repeat !important;
    background-position: right 0.75rem center !important;
    background-size: 16px 12px !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
}
[data-theme="light"] .form-select {
    background-color: rgba(0, 0, 0, 0.03) !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2364748b' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e") !important;
}
.form-select:focus {
    background-color: rgba(255, 255, 255, 0.06) !important;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
    color: var(--text-primary);
}
.form-label {
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

/* ===== TABLES ===== */
.table {
    color: var(--text-primary);
    border-color: var(--border-color);
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    --bs-table-hover-bg: var(--bg-hover);
    --bs-table-hover-color: var(--text-primary);
    --bs-table-striped-bg: var(--bg-card);
    --bs-table-striped-color: var(--text-primary);
}
.table > :not(caption) > * > * {
    background: transparent;
    border-color: var(--border-color);
    padding: 1rem;
    color: var(--text-primary);
}
.table tbody tr, .table tbody td, .table tbody td strong { color: var(--text-primary); }
.table-dark, .table-striped > tbody > tr:nth-of-type(odd) > * {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
}
.table-hover > tbody > tr:hover > * {
    background: var(--glass-bg-hover) !important;
    color: var(--text-primary) !important;
}
.table-hover > tbody > tr:hover td,
.table-hover > tbody > tr:hover td strong,
.table-hover > tbody > tr:hover td div { color: var(--text-primary) !important; }
thead.table-dark th, .table thead th {
    background: rgba(255, 255, 255, 0.02) !important;
    color: var(--text-secondary) !important;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}
.table code { background: var(--bg-secondary); color: var(--accent-secondary); }

/* ===== LIST GROUPS ===== */
.list-group { border-radius: var(--radius-lg); overflow: hidden; }
.list-group-item {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 1rem 1.25rem;
    transition: all 0.2s ease;
}
.list-group-item:first-child { border-top-left-radius: var(--radius-lg); border-top-right-radius: var(--radius-lg); }
.list-group-item:last-child { border-bottom-left-radius: var(--radius-lg); border-bottom-right-radius: var(--radius-lg); }
.list-group-item + .list-group-item { border-top: none; }
.list-group-item:hover { background: var(--glass-bg-hover); }
.list-group-item h5, .list-group-item h6 { margin-bottom: 0.25rem; color: var(--text-primary); }
.list-group-item:hover h5, .list-group-item:hover h6, .list-group-item:hover strong { color: var(--text-primary); }
.list-group-item small { color: var(--text-muted); }
.list-group-item:hover small { color: var(--text-secondary); }

/* ===== ALERTS ===== */
.alert {
    border: none;
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    backdrop-filter: blur(8px);
}
.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    border-left: 4px solid var(--success);
}
.alert-danger, .alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border-left: 4px solid var(--danger);
}
.alert-info {
    background: rgba(129, 140, 248, 0.1);
    color: var(--accent-primary);
    border-left: 4px solid var(--accent-primary);
}
.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border-left: 4px solid var(--warning);
}

/* Bootstrap close button */
.btn-close { filter: var(--toggler-filter); opacity: 0.7; }
.btn-close:hover { opacity: 1; }

/* ===== TOASTS ===== */
.toast {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}
.toast-header {
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}
.toast-header strong { color: var(--text-primary); }
.toast-header .btn-close { filter: var(--toggler-filter); }
.toast-body { background: transparent; color: var(--text-primary); }

/* Avatar Circle */
.avatar-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 14px;
}

/* Input Group */
.input-group .form-control:disabled, .input-group .form-control[readonly] {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
}
.input-group .btn-outline-secondary { border-color: var(--glass-border); color: var(--text-secondary); }
.input-group .btn-outline-secondary:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
    border-color: var(--glass-border);
}

/* ===== HERO SECTION ===== */
.hero-section {
    padding: 5rem 0 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Animated gradient mesh background */
.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(167, 139, 250, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 0%, rgba(225, 29, 72, 0.08) 0%, transparent 50%);
    animation: meshFloat 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes meshFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, -2%) rotate(1deg); }
    66% { transform: translate(-1%, 1%) rotate(-0.5deg); }
}

.hero-section > * { position: relative; z-index: 1; }

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #f1f5f9 0%, #818cf8 40%, #a78bfa 60%, #f1f5f9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

[data-theme="light"] .hero-title {
    background: linear-gradient(135deg, #0f172a 0%, #6366f1 40%, #8b5cf6 60%, #0f172a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

/* ===== FEATURE CARDS ===== */
.feature-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.25rem;
    margin-top: 3rem;
}

.feature-grid .feature-card {
    flex: 0 1 calc(50% - 1.25rem);
    min-width: 280px;
    max-width: 400px;
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: default;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(129, 140, 248, 0.3);
    box-shadow: 0 8px 40px rgba(129, 140, 248, 0.12), 0 0 0 1px rgba(129, 140, 248, 0.1);
    background: var(--glass-bg-hover);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    font-size: 1.5rem;
    box-shadow: 0 4px 16px var(--accent-glow);
}

.feature-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ===== MEETING JOIN FORM ===== */
.meeting-join-form {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 0.5rem;
    display: flex;
    gap: 0.5rem;
    max-width: 500px;
    margin: 0 auto;
}
.meeting-join-form .form-control { border: none; background: transparent; flex: 1; }
.meeting-join-form .form-control:focus { box-shadow: none; }
.meeting-join-form .btn { border-radius: var(--radius-lg); }

/* Spinner */
.spinner-border { color: var(--accent-primary); }

/* Badge */
.badge {
    font-weight: 500;
    padding: 0.5em 0.75em;
    border-radius: var(--radius-sm);
}

/* Code */
code {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--accent-secondary);
}

/* Divider */
hr { border-color: var(--border-color); opacity: 1; }

/* Recording Indicator */
#recording-indicator {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.95), rgba(220, 38, 38, 0.95));
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.4);
    backdrop-filter: blur(10px);
}

.recording-dot {
    width: 10px;
    height: 10px;
    background-color: white;
    border-radius: 50%;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

/* ===== GLASS CARD UTILITY ===== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}
.theme-toggle:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; }
[data-theme="light"] .theme-toggle .sun-icon { display: block; }
[data-theme="light"] .theme-toggle .moon-icon { display: none; }

/* ===== MODALS ===== */
.modal-backdrop { background-color: rgba(0, 0, 0, 0.7); }
.modal-content {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}
.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
}
.modal-header .modal-title { color: var(--text-primary); font-weight: 600; }
.modal-header .btn-close { filter: var(--toggler-filter); opacity: 0.7; }
.modal-header .btn-close:hover { opacity: 1; }
.modal-body { padding: 1.5rem; color: var(--text-primary); }
.modal-footer { border-top: 1px solid var(--border-color); padding: 1rem 1.5rem; }

/* ===== FORM CHECK / SWITCH ===== */
.form-check-input {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--glass-border);
}
.form-check-input:checked {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}
.form-check-input:focus {
    box-shadow: 0 0 0 3px var(--accent-glow);
    border-color: var(--accent-primary);
}
.form-switch .form-check-input {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%2394a3b8'/%3e%3c/svg%3e");
}
.form-switch .form-check-input:checked {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e");
}

/* ===== ANIMATION UTILITIES ===== */
.fade-in {
    animation: fadeIn 0.5s ease;
}

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

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

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
    .navbar {
        top: 8px;
        left: 8px;
        right: 8px;
    }
    body { padding-top: 72px; }
}

@media (max-width: 768px) {
    .hero-title { font-size: 2.75rem; }
    .hero-subtitle { font-size: 1rem; }
    .btn-lg { padding: 0.875rem 1.5rem; font-size: 1rem; }
    .navbar {
        top: 6px;
        left: 6px;
        right: 6px;
        border-radius: var(--radius-md);
    }
    body { padding-top: 68px; }
    .feature-grid .feature-card { flex: 0 1 100%; max-width: none; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2.25rem; }
    .navbar { top: 4px; left: 4px; right: 4px; padding: 0.5rem 0.75rem; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.08); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.15); }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.1); }
[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: rgba(0, 0, 0, 0.2); }