/* Variables CSS */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    --dark-color: #0f0f23;
    --darker-color: #050510;
    --light-color: #f9fafb;
    --gray-color: #6b7280;
    --neon-purple: #b794f4;
    --neon-blue: #63b3ed;
    --neon-pink: #f687b3;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #0f0f23 100%);
    --gradient-neon: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-holographic: linear-gradient(45deg, #ff0080, #ff8c00, #40e0d0, #ff0080);
    --gradient-cyber: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
}

/* General Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: #f3f4f6;
    color: var(--dark-color);
}

/* Navbar Styles */
.navbar {
    background: var(--gradient-primary) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
}

.navbar-dark .navbar-nav .nav-link {
    color: rgba(255,255,255,.9);
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
}

.navbar-dark .navbar-nav .nav-link:hover {
    color: #fff;
    background-color: rgba(255,255,255,.1);
}

/* Cards */
.card {
    border: none;
    border-radius: 1rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,.075);
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: 0 0.5rem 1.5rem rgba(0,0,0,.1);
    transform: translateY(-2px);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid rgba(0,0,0,.05);
    font-weight: 600;
    padding: 1rem 1.5rem;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: rgba(255,255,255,.05);
    transform: rotate(45deg);
}

.stat-card .card-title {
    color: rgba(255,255,255,.9);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-number {
    font-size: 2.5rem !important;
    font-weight: 700;
    color: white !important;
    margin: 0.5rem 0;
}

/* Buttons */
.btn {
    border-radius: 0.5rem;
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.btn-success:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

/* Forms */
.form-control, .form-select {
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

/* Tables */
.table {
    border-radius: 0.5rem;
    overflow: hidden;
}

.table thead th {
    background-color: #f9fafb;
    border-bottom: 2px solid #e5e7eb;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    color: var(--gray-color);
    padding: 1rem;
}

.table tbody tr {
    transition: all 0.3s ease;
}

.table tbody tr:hover {
    background-color: #f9fafb;
}

/* Badges */
.badge {
    padding: 0.375rem 0.75rem;
    font-weight: 500;
    border-radius: 0.375rem;
}

/* Hero Section */
.hero-section {
    background: var(--gradient-primary);
    color: white;
    padding: 5rem 0;
    margin-bottom: 3rem;
}

.display-4 {
    font-weight: 700;
    letter-spacing: -1px;
}

/* Dashboard Charts */
#redirectsChart, #deviceChart {
    max-height: 300px;
}

/* QR Scanner */
#qr-reader {
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,.1);
}

#qr-reader-results {
    background-color: #f9fafb;
}

/* Features Grid */
.feature-card {
    text-align: center;
    padding: 2rem;
    height: 100%;
    transition: all 0.3s ease;
}

.feature-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

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

/* Footer */
footer {
    background-color: var(--dark-color);
    color: white;
    margin-top: 5rem;
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        padding: 3rem 0;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 2rem !important;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Alert improvements */
.alert {
    border: none;
    border-radius: 0.5rem;
    padding: 1rem 1.5rem;
    font-weight: 500;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
}