* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Cairo', sans-serif;
}

body {
    background-color: #f4f7f6;
    color: #333;
}

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

.sidebar {
    width: 260px;
    background-color: #2c3e50;
    color: #fff;
    display: flex;
    flex-direction: column;
}

.sidebar .logo {
    padding: 20px;
    text-align: center;
    background-color: #1a252f;
}

.nav-menu ul {
    list-style: none;
    padding: 20px 0;
}

.nav-menu li {
    padding: 12px 20px;
    transition: background 0.3s;
}

.nav-menu li.active, .nav-menu li:hover {
    background-color: #34495e;
}

.nav-menu a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    display: block;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.top-bar {
    background: #fff;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    padding: 30px;
}

.stat-card {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    border-right: 4px solid #3498db;
}

.stat-card h3 {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 10px;
}

.stat-card .number {
    font-size: 24px;
    font-weight: 700;
    color: #2c3e50;
}

.data-section {
    background: #fff;
    margin: 0 30px 30px 30px;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.data-section h2 {
    margin-bottom: 15px;
    font-size: 18px;
    color: #2c3e50;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: right;
}

.data-table th, .data-table td {
    padding: 12px 15px;
    border-bottom: 1px solid #e2e8f0;
}

.data-table th {
    background-color: #f8fafc;
    color: #4a5568;
    font-weight: 600;
}

.badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.badge.active {
    background-color: #d1fae5;
    color: #065f46;
}

.badge.inactive {
    background-color: #fee2e2;
    color: #991b1b;
}