:root {
    --sidebar-width: 260px;
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --bg-sidebar: #1e1b4b;
    --bg-body: #f8fafc;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-body);
}

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

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.7);
    padding: 12px 20px;
    border-radius: 0;
    transition: all 0.2s;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    color: white;
    background: rgba(255,255,255,0.1);
}

.sidebar .nav-link i {
    width: 24px;
    margin-right: 8px;
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    position: absolute;
    bottom: 0;
    width: 100%;
}

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
}

.topbar {
    background: white;
    padding: 15px 25px;
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.content-area {
    padding: 25px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    height: 100%;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 22px;
    margin-right: 15px;
}

.stat-info h4 {
    margin: 0;
    font-weight: 700;
    color: #1e293b;
}

.stat-info span {
    color: #64748b;
    font-size: 13px;
}

.card {
    border: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    border-radius: 12px;
}

.card-header {
    background: white;
    border-bottom: 1px solid #f1f5f9;
    font-weight: 600;
    padding: 15px 20px;
    border-radius: 12px 12px 0 0 !important;
}

.table th {
    font-weight: 600;
    color: #475569;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Login */
.login-page {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .main-content {
        margin-left: 0;
    }
}