:root {
    --primary-color: #4A90E2;
    --success-color: #2ecc71;
    --warning-color: #f1c40f;
    --danger-color: #e74c3c;
    --text-color: #333;
    --bg-color: #f4f7f6;
    --card-bg: #fff;
    --sidebar-bg: #2C3E50;
    --sidebar-text: #ecf0f1;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
}

.sidebar-logo {
    padding: 2rem;
    font-size: 1.5rem;
    font-weight: 900;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-nav {
    list-style: none;
    padding: 1rem 0;
}

.sidebar-nav li a {
    display: block;
    padding: 1rem 2rem;
    color: var(--sidebar-text);
    text-decoration: none;
    transition: background 0.3s;
}

.sidebar-nav li a:hover,
.sidebar-nav li a.active {
    background-color: rgba(255,255,255,0.1);
    border-right: 4px solid var(--primary-color);
}

/* Content */
.dashboard-content {
    flex: 1;
    padding: 2rem;
}

/* Grid System */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-4 { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* Cards & Stats */
.card, .stat-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.stat-card {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.card-header {
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

/* Buttons & Badges */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-family: inherit;
    transition: opacity 0.3s;
    font-size: 0.9rem;
}

.btn:hover { opacity: 0.9; }

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

.badge {
    padding: 0.3rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: white;
}
.badge-warning { background-color: var(--warning-color); color: #333; }
.badge-primary { background-color: var(--primary-color); }
.badge-success { background-color: var(--success-color); }
.badge-danger { background-color: var(--danger-color); }
.badge-secondary { background-color: #95a5a6; }

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

.table th, .table td {
    padding: 1rem;
    text-align: right;
    border-bottom: 1px solid #eee;
}

.table th {
    background-color: #fafafa;
    color: #7f8c8d;
    font-weight: 500;
}

/* Loading & Empty state */
.loading {
    display: flex;
    justify-content: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: #7f8c8d;
}

.empty-state p {
    margin-bottom: 1rem;
}