:root {
    --primary: #2C5F96;
    --primary-light: #5D8DC9;
    --primary-dark: #1A3A5F;
    --secondary: #F5F7FA;
    --text: #333333;
    --text-light: #777777;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    color: var(--text);
}

.admin-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: 250px;
    background-color: var(--primary);
    color: white;
    padding: 20px 0;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--primary-light);
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-menu li a:hover, .sidebar-menu li a.active {
    background-color: var(--primary-dark);
}

/* Main Content Styles */
.main-content {
    flex: 1;
    padding: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #ddd;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.card {
    background: white;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 20px;
    margin-bottom: 20px;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

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

.table th {
    background-color: var(--secondary);
    padding: 12px 15px;
    text-align: left;
}

.table td {
    padding: 12px 15px;
    border-bottom: 1px solid #ddd;
}

.alert {
    padding: 10px 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
}

.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: white;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 20px;
    text-align: center;
}

.stat-card h3 {
    margin-top: 0;
    color: var(--primary);
}

.stat-card p {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .admin-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}