/* Purple Theme - Elegant Color Palette */
:root {
    /* Primary Purple Palette */
    --purple-50: #faf7ff;
    --purple-100: #f3e8ff;
    --purple-200: #e9d5ff;
    --purple-300: #d8b4fe;
    --purple-400: #c084fc;
    --purple-500: #a855f7;
    --purple-600: #9333ea;
    --purple-700: #7c3aed;
    --purple-800: #6b21a8;
    --purple-900: #581c87;
    
    /* Secondary Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--purple-600) 0%, var(--purple-700) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--purple-500) 0%, var(--purple-600) 100%);
    --gradient-light: linear-gradient(135deg, var(--purple-50) 0%, var(--purple-100) 100%);
    --gradient-bg: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

/* Global Styles */
body {
    background: var(--gradient-bg);
    color: var(--gray-700);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--gray-800);
    font-weight: 600;
}

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

.text-purple {
    color: var(--purple-600);
}

.text-muted {
    color: var(--gray-500);
}

.text-secondary {
    color: var(--gray-600);
}

/* Cards & Containers */
.card, .chart-container, .metric-card {
    background: white;
    border: 1px solid var(--purple-100);
    border-radius: 16px;
    box-shadow: 0 4px 25px rgba(168, 85, 247, 0.08);
    transition: all 0.3s ease;
}

.card:hover, .chart-container:hover, .metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 35px rgba(168, 85, 247, 0.12);
}

/* Buttons */
.btn-primary {
    background: var(--gradient-primary);
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--gradient-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(168, 85, 247, 0.25);
    color: white;
}

.btn-outline-primary {
    border: 2px solid var(--purple-200);
    color: var(--purple-600);
    border-radius: 12px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background: var(--purple-50);
    border-color: var(--purple-300);
    color: var(--purple-700);
}

/* Forms */
.form-control {
    border: 2px solid var(--purple-100);
    border-radius: 12px;
    padding: 0.875rem 1rem;
    transition: all 0.3s ease;
    background: white;
    color: var(--gray-700);
}

.form-control:focus {
    border-color: var(--purple-300);
    box-shadow: 0 0 0 0.2rem rgba(168, 85, 247, 0.15);
    background: var(--purple-50);
}

.form-control::placeholder {
    color: var(--gray-400);
}

.form-label {
    color: var(--gray-600);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* Navigation */
.navbar {
    background: var(--gradient-primary) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(168, 85, 247, 0.15);
}

.navbar-brand, .nav-link {
    color: white !important;
    font-weight: 600;
}

.nav-link:hover {
    color: var(--purple-100) !important;
}

/* Metrics & Stats */
.metric-card {
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

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

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0.5rem 0;
}

.metric-label {
    color: var(--gray-600);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Badges */
.badge {
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.8rem;
}

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

.badge.bg-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%) !important;
}

.badge.bg-primary {
    background: var(--gradient-primary) !important;
}

/* Tables */
.table {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 25px rgba(168, 85, 247, 0.08);
}

.table thead th {
    background: var(--purple-50);
    color: var(--gray-700);
    border: none;
    font-weight: 600;
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    border-color: var(--purple-100);
    color: var(--gray-600);
}

.table tbody tr:hover {
    background: var(--purple-50);
}

/* Progress */
.progress {
    height: 8px;
    border-radius: 4px;
    background: var(--purple-100);
}

.progress-bar {
    background: var(--gradient-primary);
    border-radius: 4px;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 12px;
    padding: 1rem 1.5rem;
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.1) 100%);
    color: #059669;
    border-left: 4px solid #10b981;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(220, 38, 38, 0.1) 100%);
    color: #dc2626;
    border-left: 4px solid #ef4444;
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(217, 119, 6, 0.1) 100%);
    color: #d97706;
    border-left: 4px solid #f59e0b;
}

/* Dropdowns */
.dropdown-menu {
    border: 1px solid var(--purple-100);
    border-radius: 12px;
    box-shadow: 0 8px 35px rgba(168, 85, 247, 0.15);
    padding: 0.5rem;
}

/* Logout Button Small */
.logout-btn-small {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    color: var(--gray-600);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.logout-btn-small:hover {
    background: var(--purple-50);
    color: var(--purple-600);
    text-decoration: none;
}

.logout-btn-small i {
    margin-right: 0.5rem;
    font-size: 0.8rem;
}

.dropdown-item {
    border-radius: 8px;
    color: var(--gray-600);
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background: var(--purple-50);
    color: var(--purple-700);
}

/* Pagination */
.page-link {
    color: var(--purple-600);
    border-color: var(--purple-200);
    border-radius: 8px;
    margin: 0 2px;
}

.page-link:hover {
    background: var(--purple-50);
    color: var(--purple-700);
    border-color: var(--purple-300);
}

.page-item.active .page-link {
    background: var(--gradient-primary);
    border-color: var(--purple-600);
}

/* Custom Components */
.welcome-card {
    background: var(--gradient-primary);
    color: white;
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.welcome-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.status-completed {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.875rem;
}

.status-pending {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.875rem;
}

/* Dark Theme Chart Container */
.chart-dark {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    border: 1px solid #334155;
}

.chart-dark .text-muted {
    color: #94a3b8 !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .metric-card {
        margin-bottom: 1rem;
    }
    
    .metric-value {
        font-size: 1.5rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}

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

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

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

.slide-up {
    animation: slideUp 0.8s ease-out;
}

/* Utility Classes */
.bg-gradient-primary {
    background: var(--gradient-primary) !important;
}

.bg-gradient-secondary {
    background: var(--gradient-secondary) !important;
}

.bg-gradient-light {
    background: var(--gradient-light) !important;
}

.border-purple {
    border-color: var(--purple-200) !important;
}

.shadow-purple {
    box-shadow: 0 4px 25px rgba(168, 85, 247, 0.15) !important;
}

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

/* Sidebar Improvements */
.sidebar-divider {
    border: 0;
    height: 1px;
    background: var(--purple-200);
    margin: 1rem 0;
    opacity: 0.5;
}

.sidebar a.text-purple {
    color: var(--purple-600) !important;
    font-weight: 500;
}

.sidebar a.text-purple:hover {
    color: var(--purple-700) !important;
    background: var(--purple-50);
}

/* Enhanced Chart Styles */
.chart-container .chart-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.chart-container .chart-subtitle {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

/* Payment Method Improvements */
.payment-method-item {
    transition: all 0.3s ease;
    cursor: pointer;
}

.payment-method-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(168, 85, 247, 0.15);
}

/* Enhanced Welcome Card */
.welcome-card .welcome-content h3 {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

.welcome-card .welcome-actions .btn {
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
}

.welcome-card .welcome-actions .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

/* Customer Area Specific Styles */
.customer-nav {
    background: var(--gradient-primary);
    padding: 1rem 0;
    box-shadow: 0 4px 20px rgba(168, 85, 247, 0.15);
}

.customer-nav .navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.customer-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 25px rgba(168, 85, 247, 0.08);
    border: 1px solid var(--purple-100);
    transition: all 0.3s ease;
}

.customer-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(168, 85, 247, 0.15);
}

.course-card {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 4px 20px rgba(168, 85, 247, 0.08);
    border: 1px solid var(--purple-100);
    transition: all 0.3s ease;
}

.course-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(168, 85, 247, 0.12);
}

.course-title {
    color: var(--gray-800);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.course-description {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* Status Badges Enhanced */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge i {
    margin-right: 0.5rem;
}

.status-badge.completed {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.status-badge.pending {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.status-badge.active {
    background: rgba(168, 85, 247, 0.1);
    color: var(--purple-700);
}

/* Enhanced Form Styles */
.form-floating .form-control {
    padding-top: 1.625rem;
    padding-bottom: 0.625rem;
}

.form-floating label {
    color: var(--gray-500);
    font-weight: 500;
}

.form-floating .form-control:focus ~ label,
.form-floating .form-control:not(:placeholder-shown) ~ label {
    color: var(--purple-600);
}

/* 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;
    }
}

/* Responsive Enhancements */
@media (max-width: 992px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .welcome-card {
        padding: 1.5rem;
    }
    
    .welcome-card .welcome-content h3 {
        font-size: 1.5rem;
    }
    
    .customer-card {
        padding: 1.5rem;
    }
}

@media (max-width: 576px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .metric-value {
        font-size: 1.75rem;
    }
    
    .welcome-card {
        padding: 1rem;
        text-align: center;
    }
    
    .welcome-card .welcome-actions {
        margin-top: 1rem;
    }
    
    .chart-container {
        padding: 1rem;
    }
}