:root {
    --primary: #4e73df;
    --primary-dark: #2e59d9;
    --secondary: #858796;
    --success: #1cc88a;
    --info: #36b9cc;
    --warning: #f6c23e;
    --danger: #e74a3b;
    --sidebar-bg: #1e2a3a;
    --sidebar-text: #b7c0cd;
    --sidebar-active: #4e73df;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f9;
}

/* Sidebar */
.sidebar {
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    background: var(--sidebar-bg);
    width: 250px;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    transition: all 0.3s;
    /* Slim scrollbar that blends with the dark sidebar */
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.2) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.35);
}

.sidebar .brand {
    padding: 1.2rem 1rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    display: block;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar .nav-link {
    color: var(--sidebar-text);
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.sidebar .nav-link.active {
    border-left: 3px solid var(--sidebar-active);
}

.sidebar .nav-section {
    color: rgba(255,255,255,0.4);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 1rem 1rem 0.5rem;
    font-weight: 600;
}

/* Main content */
.main-content {
    margin-left: 250px;
    min-height: 100vh;
}

.topbar {
    background: #fff;
    border-bottom: 1px solid #e3e6f0;
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar .user-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.content-wrapper {
    padding: 1.5rem;
}

/* Dashboard cards */
.stat-card {
    border-left: 4px solid var(--primary);
    border-radius: 0.35rem;
}

.stat-card.success { border-left-color: var(--success); }
.stat-card.info { border-left-color: var(--info); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.danger { border-left-color: var(--danger); }

.stat-card .stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--secondary);
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2d3748;
}

/* Auth pages */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e2a3a 0%, #4e73df 100%);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: #fff;
    border-radius: 0.5rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    padding: 2rem;
}

.auth-card h2 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* Tables */
.table th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--secondary);
    border-top: none;
}

/* Badges */
.badge-status {
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
}

/* Shop */
.product-card {
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid #e3e6f0;
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.product-card .card-header {
    background: var(--primary);
    color: #fff;
    font-weight: 600;
}

.price-tag {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.price-tag small {
    font-size: 0.8rem;
    color: var(--secondary);
    font-weight: 400;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
}