/* ================================
   iPadOS 26 Liquid Glass Theme
   ================================
   Modern design system inspired by iPadOS 26
   Features: Liquid Glass effects, vibrant colors, smooth animations
   ================================ */

/* ================================
   Root Variables & Color System
   ================================ */
:root {
    /* Primary Colors - Vibrant yet soft */
    --ipados-primary: #007AFF;
    --ipados-primary-light: rgba(0, 122, 255, 0.15);
    --ipados-primary-glass: rgba(0, 122, 255, 0.08);

    /* Secondary Colors */
    --ipados-purple: #AF52DE;
    --ipados-pink: #FF2D55;
    --ipados-orange: #FF9500;
    --ipados-yellow: #FFCC00;
    --ipados-green: #34C759;
    --ipados-teal: #5AC8FA;
    --ipados-blue: #5856D6;
    --ipados-indigo: #5856D6;

    /* Glass Effects */
    --glass-white: rgba(255, 255, 255, 0.72);
    --glass-white-heavy: rgba(255, 255, 255, 0.92);
    --glass-dark: rgba(0, 0, 0, 0.35);
    --glass-blur: 20px;
    --glass-blur-heavy: 40px;

    /* Liquid Glass Gradients */
    --liquid-gradient-1: linear-gradient(135deg,
        rgba(120, 119, 198, 0.3) 0%,
        rgba(255, 119, 168, 0.3) 50%,
        rgba(255, 189, 89, 0.3) 100%);
    --liquid-gradient-2: linear-gradient(135deg,
        rgba(94, 252, 232, 0.3) 0%,
        rgba(115, 110, 254, 0.3) 50%,
        rgba(255, 119, 168, 0.3) 100%);
    --liquid-gradient-3: linear-gradient(135deg,
        rgba(255, 154, 158, 0.3) 0%,
        rgba(250, 208, 196, 0.3) 50%,
        rgba(250, 208, 196, 0.3) 100%);

    /* Shadows & Depth */
    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.08), 0 10px 10px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 30px rgba(0, 122, 255, 0.3);

    /* Spacing System */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Animations */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ================================
   Base Body & Typography
   ================================ */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Kanit', 'Sarabun', system-ui, sans-serif;
    background: #f0f2f5;
    color: #1c1c1e;
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    min-height: 100vh;
}

/* Clean background - no gradient orbs */

/* ================================
   Glass Morphism Components
   ================================ */

/* Glass Card Component - Frosted glass effect (กระจกขุ่น) */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px) saturate(120%) brightness(1.1);
    -webkit-backdrop-filter: blur(20px) saturate(120%) brightness(1.1);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 20px 40px 0 rgba(0, 0, 0, 0.15),
                0 0 0 1px rgba(255, 255, 255, 0.3) inset,
                0 0 30px 0 rgba(255, 255, 255, 0.5) inset;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.4) 50%,
        transparent 100%);
}

.glass-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 25px 50px 0 rgba(0, 0, 0, 0.2),
                0 0 0 1px rgba(255, 255, 255, 0.5) inset,
                0 0 40px 0 rgba(255, 255, 255, 0.6) inset;
}

/* Liquid Glass Effect */
.liquid-glass {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0.05) 100%);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.liquid-glass::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: var(--liquid-gradient-1);
    animation: liquidFlow 8s ease-in-out infinite;
    opacity: 0.5;
}

@keyframes liquidFlow {
    0%, 100% { transform: rotate(0deg) translateY(0); }
    25% { transform: rotate(90deg) translateY(10px); }
    50% { transform: rotate(180deg) translateY(0); }
    75% { transform: rotate(270deg) translateY(-10px); }
}

/* ================================
   Navigation Bar
   ================================ */
.navbar {
    background: var(--glass-white) !important;
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: var(--glass-white-heavy) !important;
    box-shadow: var(--shadow-lg);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all var(--transition-base);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.navbar-brand i {
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navigation Links */
.navbar-nav .nav-link {
    color: #1c1c1e !important;
    font-weight: 500;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--ipados-primary-light);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
    transition: all var(--transition-slow);
}

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

.navbar-nav .nav-link:hover::before {
    width: 100%;
    height: 100%;
}

/* Dropdown Menu */
.dropdown-menu {
    background: var(--glass-white-heavy);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 0.5rem;
    animation: dropdownSlide var(--transition-spring);
    margin-top: 0.5rem;
}

@keyframes dropdownSlide {
    0% {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.dropdown-item {
    border-radius: var(--radius-md);
    padding: 0.625rem 1rem;
    color: #1c1c1e;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.dropdown-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--ipados-primary-light), transparent);
    transition: width var(--transition-base);
}

.dropdown-item:hover {
    background: var(--ipados-primary-glass);
    color: var(--ipados-primary);
    padding-left: 1.5rem;
}

.dropdown-item:hover::before {
    width: 100%;
}

.dropdown-item i {
    width: 24px;
    text-align: center;
    margin-right: 0.5rem;
    color: var(--ipados-primary);
}

/* ================================
   Buttons
   ================================ */
.btn {
    border-radius: var(--radius-full);
    padding: 0.625rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-transform: none;
    letter-spacing: 0.01em;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Primary Button - Gradient with subtle glass */
.btn-primary {
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-blue));
    color: white;
    box-shadow: 0 4px 14px rgba(0, 122, 255, 0.3),
                inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4),
                inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
    background: linear-gradient(135deg, var(--ipados-blue), var(--ipados-primary));
}

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

/* Glass Button - Frosted glass effect (กระจกขุ่น) */
.btn-glass {
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(20px) saturate(120%) brightness(1.1);
    -webkit-backdrop-filter: blur(20px) saturate(120%) brightness(1.1);
    color: var(--ipados-primary);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 24px 0 rgba(0, 0, 0, 0.12),
                0 0 0 1px rgba(255, 255, 255, 0.3) inset;
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.85);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px 0 rgba(0, 0, 0, 0.15),
                0 0 0 1px rgba(255, 255, 255, 0.4) inset;
}

/* Icon Button */
.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--glass-white);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    transform: scale(1.1);
    background: var(--ipados-primary-glass);
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-purple));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 122, 255, 0.4);
    transition: all var(--transition-spring);
    z-index: 1000;
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(0, 122, 255, 0.6);
}

/* ================================
   Cards & Containers
   ================================ */
.card {
    border: none;
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card-glass {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.2),
                inset 0 1px 0 0 rgba(255, 255, 255, 0.25);
}

.card-glass:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.3),
                inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
}

.card-header {
    background: linear-gradient(135deg, var(--ipados-primary-glass), transparent);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1.25rem;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--ipados-primary);
}

.card-body {
    padding: 1.5rem;
}

/* Feature Card with Gradient Border */
.feature-card {
    background: var(--glass-white);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-xl);
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-xl);
    padding: 2px;
    background: linear-gradient(135deg,
        var(--ipados-primary),
        var(--ipados-purple),
        var(--ipados-pink));
    -webkit-mask: linear-gradient(#fff 0 0) content-box,
                  linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

/* ================================
   Forms & Inputs
   ================================ */
.form-control,
.form-select {
    background: var(--glass-white);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all var(--transition-base);
    color: #1c1c1e;
}

.form-control:focus,
.form-select:focus {
    background: var(--glass-white-heavy);
    border-color: var(--ipados-primary);
    box-shadow: 0 0 0 3px var(--ipados-primary-light);
    outline: none;
}

.form-control::placeholder {
    color: rgba(28, 28, 30, 0.5);
}

/* Custom Checkbox & Radio */
.form-check-input {
    width: 22px;
    height: 22px;
    background: var(--glass-white);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.form-check-input:checked {
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-blue));
    border-color: var(--ipados-primary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px var(--ipados-primary-light);
}

/* Switch Toggle */
.form-switch .form-check-input {
    width: 44px;
    height: 24px;
    border-radius: var(--radius-full);
    background: rgba(120, 120, 128, 0.16);
    border: none;
}

.form-switch .form-check-input:checked {
    background: linear-gradient(90deg, var(--ipados-green), var(--ipados-teal));
}

/* ================================
   Tables
   ================================ */
.table {
    background: var(--glass-white);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table thead th {
    background: linear-gradient(135deg, var(--ipados-primary-glass), transparent);
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    font-weight: 600;
    color: var(--ipados-primary);
    padding: 1rem;
}

.table tbody tr {
    transition: all var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--ipados-primary-glass);
}

.table tbody td {
    padding: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* ================================
   Badges & Pills
   ================================ */
.badge {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.02em;
}

.badge-glass {
    background: var(--glass-white);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    color: var(--ipados-primary);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge-gradient {
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-purple));
    color: white;
}

/* Status Pills */
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
}

.status-pill::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: currentColor;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.status-pill.success {
    background: rgba(52, 199, 89, 0.1);
    color: var(--ipados-green);
}

.status-pill.warning {
    background: rgba(255, 204, 0, 0.1);
    color: var(--ipados-yellow);
}

.status-pill.danger {
    background: rgba(255, 45, 85, 0.1);
    color: var(--ipados-pink);
}

/* ================================
   Alerts & Notifications
   ================================ */
.alert {
    background: var(--glass-white-heavy);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--ipados-primary), var(--ipados-purple));
}

.alert-success::before {
    background: linear-gradient(180deg, var(--ipados-green), var(--ipados-teal));
}

.alert-warning::before {
    background: linear-gradient(180deg, var(--ipados-yellow), var(--ipados-orange));
}

.alert-danger::before {
    background: linear-gradient(180deg, var(--ipados-pink), var(--ipados-orange));
}

/* Toast Notifications */
.toast {
    background: var(--glass-white-heavy);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    animation: slideInRight var(--transition-spring);
}

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

/* ================================
   Modals
   ================================ */
.modal-content {
    background: var(--glass-white-heavy);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.modal-backdrop {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.modal-header {
    background: linear-gradient(135deg, var(--ipados-primary-glass), transparent);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    background: rgba(255, 255, 255, 0.05);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1.25rem;
}

/* ================================
   Loading & Progress
   ================================ */
.spinner-border {
    width: 2rem;
    height: 2rem;
    border-width: 3px;
    border-color: var(--ipados-primary);
    border-right-color: transparent;
}

/* Progress Bar */
.progress {
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    background: linear-gradient(90deg, var(--ipados-primary), var(--ipados-purple));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ================================
   Lists & Navigation
   ================================ */
.list-group-item {
    background: var(--glass-white);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 1.25rem;
    transition: all var(--transition-fast);
}

.list-group-item:hover {
    background: var(--ipados-primary-glass);
    padding-left: 1.75rem;
}

.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);
    border-bottom: none;
}

/* ================================
   Pagination
   ================================ */
.pagination {
    gap: 0.5rem;
}

.page-link {
    background: var(--glass-white);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    color: var(--ipados-primary);
    padding: 0.5rem 0.875rem;
    transition: all var(--transition-fast);
}

.page-link:hover {
    background: var(--ipados-primary-glass);
    transform: translateY(-2px);
}

.page-item.active .page-link {
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-blue));
    border-color: transparent;
    color: white;
}

/* ================================
   Tooltips & Popovers
   ================================ */
.tooltip-inner {
    background: var(--glass-dark);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-md);
    padding: 0.5rem 0.875rem;
    font-size: 0.875rem;
}

.popover {
    background: var(--glass-white-heavy);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.popover-header {
    background: linear-gradient(135deg, var(--ipados-primary-glass), transparent);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    font-weight: 600;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* ================================
   Utility Classes
   ================================ */

/* Text Gradients */
.text-gradient-primary {
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-success {
    background: linear-gradient(135deg, var(--ipados-green), var(--ipados-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-danger {
    background: linear-gradient(135deg, var(--ipados-pink), var(--ipados-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Glass Backgrounds */
.bg-glass-light {
    background: var(--glass-white);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}

.bg-glass-heavy {
    background: var(--glass-white-heavy);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
}

.bg-glass-dark {
    background: var(--glass-dark);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}

/* Hover Effects */
.hover-scale:hover {
    transform: scale(1.05);
}

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

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(0, 122, 255, 0.4);
}

/* Animation Classes */
.animate-float {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.animate-pulse-slow {
    animation: pulseSlow 4s ease-in-out infinite;
}

@keyframes pulseSlow {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.9; }
}

/* ================================
   Scrollbar Styling
   ================================ */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--ipados-primary), var(--ipados-purple));
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--ipados-purple), var(--ipados-primary));
    background-clip: padding-box;
}

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--glass-dark);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
    padding: 2rem 0;
    margin-top: auto;
}

.footer a {
    color: var(--ipados-teal);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.footer a:hover {
    color: var(--ipados-primary);
    text-decoration: underline;
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 768px) {
    :root {
        --glass-blur: 15px;
        --glass-blur-heavy: 25px;
    }

    .navbar-brand {
        font-size: 1.25rem;
    }

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

    .fab {
        width: 50px;
        height: 50px;
        bottom: 1rem;
        right: 1rem;
    }
}

@media (max-width: 576px) {
    body {
        font-size: 15px;
    }

    .btn {
        padding: 0.5rem 1.25rem;
        font-size: 0.9rem;
    }

    .card-body {
        padding: 1.25rem;
    }

    .modal-body {
        padding: 1.5rem;
    }
}

/* ================================
   Dark Mode Support
   ================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --glass-white: rgba(255, 255, 255, 0.1);
        --glass-white-heavy: rgba(255, 255, 255, 0.15);
        --glass-dark: rgba(0, 0, 0, 0.5);
    }

    body {
        color: rgba(255, 255, 255, 0.9);
    }

    .navbar-nav .nav-link {
        color: rgba(255, 255, 255, 0.9) !important;
    }

    .form-control,
    .form-select {
        background: rgba(255, 255, 255, 0.05);
        color: rgba(255, 255, 255, 0.9);
    }
}

/* ================================
   Print Styles
   ================================ */
@media print {
    body {
        background: white;
    }

    .glass-card,
    .liquid-glass,
    .navbar,
    .card {
        background: white !important;
        box-shadow: none !important;
        border: 1px solid #dee2e6 !important;
    }

    .navbar,
    .footer,
    .fab {
        display: none !important;
    }
}