:root { --sidebar-width: 260px; --accent: #0dcaf0; }
body { background: #f8f9fa; }
.sidebar { width: var(--sidebar-width); min-height: 100vh; position: fixed; left: 0; top: 0; z-index: 1000; }
.main-content { margin-left: var(--sidebar-width); padding: 2rem; min-height: 100vh; }
.nav-link { color: #495057; border-radius: 8px; padding: 0.75rem 1rem; }
.nav-link:hover { background: #e9ecef; }
.nav-link.active { background: var(--accent); color: #000; }
@media (max-width: 992px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.show { transform: translateX(0); }
    .main-content { margin-left: 0; }
}