/* Advanced Custom Styles for PHP Auth System v2.1.8 */

/* CSS Custom Properties for Advanced Theming */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --danger-gradient: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);

    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.2);

    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* Advanced Typography System */
.typography-system {
    font-family: var(--font-family-primary);
}

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-shadow-light {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.text-shadow-heavy {
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Advanced Hero Section with Glassmorphism */
.hero-section {
    background: var(--primary-gradient);
    color: white;
    padding: 100px 0;
    margin-top: -20px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.05"/><circle cx="90" cy="40" r="0.5" fill="white" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero-section h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-section p {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    opacity: 0.95;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

/* Advanced Card System with Glassmorphism */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-heavy);
}

.card:hover::before {
    opacity: 1;
}

.card-glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
}

/* Advanced Button System */
.btn {
    border-radius: var(--border-radius-md);
    font-weight: 600;
    letter-spacing: 0.025em;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width var(--transition-normal), height var(--transition-normal);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--primary-gradient);
    border: none;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: var(--secondary-gradient);
    border: none;
}

.btn-success {
    background: var(--success-gradient);
    border: none;
}

.btn-warning {
    background: var(--warning-gradient);
    border: none;
}

.btn-danger {
    background: var(--danger-gradient);
    border: none;
}

/* Advanced Form System */
.form-container {
    max-width: 450px;
    margin: 0 auto;
}

.form-floating > .form-control {
    border-radius: var(--border-radius-md);
    border: 2px solid #e9ecef;
    transition: all var(--transition-fast);
}

.form-floating > .form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    transform: translateY(-1px);
}

.form-floating > label {
    padding: 1rem 0.75rem;
    font-weight: 500;
}

/* Advanced Alert System */
.alert {
    border-radius: var(--border-radius-md);
    border: none;
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: currentColor;
}

.alert-primary {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: #495057;
}

.alert-success {
    background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(34, 197, 94, 0.1) 100%);
    color: #155724;
}

.alert-warning {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1) 0%, rgba(255, 193, 7, 0.1) 100%);
    color: #856404;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1) 0%, rgba(220, 53, 69, 0.1) 100%);
    color: #721c24;
}

/* Advanced Dashboard Components */
.dashboard-card {
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--border-radius-xl);
    position: relative;
    overflow: hidden;
}

.dashboard-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translate(-50%, -50%) rotate(0deg); }
    50% { transform: translate(-50%, -50%) rotate(180deg); }
}

.dashboard-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Advanced Navigation */
.navbar {
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.95) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: var(--shadow-light);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Advanced Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

.scale-in {
    animation: scaleIn 0.4s ease-out;
}

/* Staggered animations */
.fade-in-up:nth-child(1) { animation-delay: 0.1s; }
.fade-in-up:nth-child(2) { animation-delay: 0.2s; }
.fade-in-up:nth-child(3) { animation-delay: 0.3s; }
.fade-in-up:nth-child(4) { animation-delay: 0.4s; }
.fade-in-up:nth-child(5) { animation-delay: 0.5s; }

/* Advanced Loading States */
.loading-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

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

/* Advanced Progress Bars */
.progress {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    background: rgba(0, 0, 0, 0.1);
}

.progress-bar {
    background: var(--primary-gradient);
    transition: width 0.6s ease;
}

/* Advanced Modals */
.modal-content {
    border-radius: var(--border-radius-xl);
    border: none;
    box-shadow: var(--shadow-heavy);
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.95);
}

.modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: 1.5rem 2rem;
}

.modal-body {
    padding: 2rem;
}

.modal-footer {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding: 1.5rem 2rem;
}

/* Advanced Tooltips */
.tooltip-inner {
    background: var(--primary-gradient);
    border-radius: var(--border-radius-md);
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
}

/* Advanced Badges */
.badge {
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    padding: 0.375rem 0.75rem;
}

/* Advanced Tables */
.table {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.table thead th {
    background: var(--primary-gradient);
    color: white;
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
}

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

.table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
    transform: scale(1.01);
}

/* Advanced Pagination */
.pagination {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-light);
}

.page-link {
    border: none;
    color: #667eea;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.page-link:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-1px);
}

.page-item.active .page-link {
    background: var(--primary-gradient);
    border-color: #667eea;
}

/* Advanced Dropdowns */
.dropdown-menu {
    border-radius: var(--border-radius-lg);
    border: none;
    box-shadow: var(--shadow-medium);
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.95);
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    transform: translateX(5px);
}

/* Advanced Tabs */
.nav-tabs {
    border: none;
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 0.5rem;
}

.nav-tabs .nav-link {
    border: none;
    border-radius: var(--border-radius-md);
    color: #6c757d;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-tabs .nav-link.active {
    background: white;
    color: #667eea;
    box-shadow: var(--shadow-light);
}

.nav-tabs .nav-link:hover {
    background: rgba(255, 255, 255, 0.5);
    color: #667eea;
}

/* Advanced Breadcrumbs */
.breadcrumb {
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
}

.breadcrumb-item a {
    color: #667eea;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
    color: #764ba2;
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: var(--border-radius-md);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: var(--border-radius-md);
    border: 2px solid #f1f1f1;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
}

/* Advanced Focus States */
.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
}

/* Advanced Print Styles */
@media print {
    .no-print {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }

    .btn {
        display: none;
    }
}

/* Advanced Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --glass-bg: rgba(0, 0, 0, 0.2);
        --glass-border: rgba(255, 255, 255, 0.1);
    }

    .card {
        background: rgba(0, 0, 0, 0.05);
        color: #fff;
    }

    .navbar {
        background: rgba(0, 0, 0, 0.9) !important;
    }
}

/* Advanced Mobile Responsiveness */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
    }

    .hero-section h1 {
        font-size: 2.5rem;
    }

    .dashboard-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-item {
        padding: 1rem;
        background: rgba(255, 255, 255, 0.1);
        border-radius: var(--border-radius-md);
    }

    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .card {
        margin-bottom: 1rem;
    }

    .modal-dialog {
        margin: 0.5rem;
    }

    .table-responsive {
        border-radius: var(--border-radius-lg);
        overflow: hidden;
    }
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 2rem;
    }

    .hero-section p {
        font-size: 1rem;
    }

    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid #000;
    }

    .btn {
        border: 2px solid currentColor;
    }
}

/* Advanced Utility Classes */
.glass-effect {
    backdrop-filter: blur(20px);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-glow {
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
}

.border-gradient {
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box,
                var(--primary-gradient) border-box;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

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

.hover-lift {
    transition: transform var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.text-balance {
    text-wrap: balance;
}

/* Advanced Performance Optimizations */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

.contain-layout {
    contain: layout style paint;
}

.content-visibility-auto {
    content-visibility: auto;
}

/* Advanced Print Optimizations */
@media print {
    .hero-section {
        background: white !important;
        color: black !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .card {
        break-inside: avoid;
        page-break-inside: avoid;
    }

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