:root {
    --primary: #d4a373;
    --primary-dark: #b8834f;
    --sidebar-width: 250px;
    --header-height: 70px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: #2d2d2d;
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid #444;
}

.sidebar-header h2 {
    font-size: 24px;
    color: var(--primary);
}

.sidebar-nav {
    padding: 20px 0;
}

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

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: #3d3d3d;
    color: white;
    border-left: 3px solid var(--primary);
}

.sidebar-nav a i {
    width: 20px;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 20px;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.admin-header h1 {
    font-size: 24px;
    font-weight: 300;
}

.admin-user {
    color: #666;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.stat-info h3 {
    font-size: 24px;
    font-weight: 700;
}

.stat-info p {
    color: #666;
    font-size: 14px;
}

/* Tables */
.admin-table {
    width: 100%;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.admin-table thead {
    background: #f8f9fa;
}

.admin-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: #555;
}

.admin-table td {
    padding: 12px 15px;
    border-top: 1px solid #eee;
}

.admin-table tr:hover {
    background: #f8f9fa;
}

/* Estados */
.estado {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.estado-pendiente {
    background: #fff3cd;
    color: #856404;
}

.estado-confirmada {
    background: #cce5ff;
    color: #004085;
}

.estado-completada {
    background: #d4edda;
    color: #155724;
}

.estado-cancelada {
    background: #f8d7da;
    color: #721c24;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }
    
    .sidebar-header h2 {
        font-size: 16px;
    }
    
    .sidebar-nav a span {
        display: none;
    }
    
    .main-content {
        margin-left: 60px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}