/* Modern Admin Dashboard Styles */
:root {
    /* Theme Colors */
    --primary-color: #4a90e2;
    --primary-dark: #357abd;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --success-color: #2ecc71;
    --warning-color: #f1c40f;
    --danger-color: #e74c3c;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #2c3e50;
    
    /* Text Colors */
    --text-primary: #2c3e50;
    --text-secondary: #6c757d;
    --text-light: #ffffff;
    
    /* Border Colors */
    --border-color: #e1e1e1;
    --border-radius: 12px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    /* Transitions */
    --transition-speed: 0.3s;
}

/* Dark Theme */
.theme-dark {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --border-color: #404040;
}

/* Modern Theme */
.theme-modern {
    --primary-color: #6c5ce7;
    --primary-dark: #5641e5;
    --accent-color: #00cec9;
    --bg-primary: #ffffff;
    --bg-secondary: #f7f7ff;
}

/* Minimal Theme */
.theme-minimal {
    --primary-color: #34495e;
    --primary-dark: #2c3e50;
    --border-radius: 4px;
    --shadow-sm: none;
    --shadow-md: none;
    --shadow-lg: 0 2px 4px rgba(0,0,0,0.05);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Admin Container */
.admin-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-speed) ease;
}

.sidebar-header {
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.sidebar-header h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 600;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
}

.sidebar-nav-link:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    transform: translateX(4px);
}

.sidebar-nav-link.active {
    background-color: var(--primary-color);
    color: var(--text-light);
}

.sidebar-nav-link i {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.logout {
    margin-top: auto;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1rem;
    width: 100%;
    text-align: left;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    background-color: var(--bg-secondary);
}

/* Section Styles */
.section {
    display: none;
    animation: fadeIn var(--transition-speed) ease;
}

.section.active {
    display: block;
}

.section h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xl);
    font-size: 1.75rem;
    font-weight: 600;
}

/* Dashboard Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-speed) ease;
}

.stat-card:hover {
    transform: translateY(-4px);
}

.stat-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.stat-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 1rem;
}

.stat-card p {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-speed) ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.1);
}

/* Buttons */
.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn i {
    font-size: 1rem;
}

/* Tables */
.table-container {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 500;
}

tr:hover {
    background-color: var(--bg-secondary);
}

/* Theme Cards */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.theme-card {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-speed) ease;
}

.theme-card:hover {
    transform: translateY(-4px);
}

.theme-preview {
    height: 120px;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.theme-preview.default {
    background: linear-gradient(135deg, #4a90e2, #357abd);
}

.theme-preview.dark {
    background: linear-gradient(135deg, #2c3e50, #34495e);
}

.theme-preview.light {
    background: linear-gradient(135deg, #ecf0f1, #bdc3c7);
}

.theme-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.theme-select-btn {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.theme-select-btn:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
    border-color: var(--primary-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-speed) ease;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-speed) ease;
}

.modal-close:hover {
    color: var(--accent-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .admin-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .theme-grid {
        grid-template-columns: 1fr;
    }
}