:root {
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
}

body {
    font-family: 'Poppins', sans-serif;
}

.sidebar-nav {
    width: var(--sidebar-width);
    background: var(--primary-color);
    color: white;
    height: 100vh;
    overflow-y: auto;
    padding: 0;
    border-right: 1px solid rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.sidebar-nav::-webkit-scrollbar {
    width: 6px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.sidebar-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-bottom: 2px solid var(--accent-color);
    color: white;
}

.sidebar-header h5 {
    font-weight: 600;
    font-size: 1rem;
}

.sidebar-content {
    padding: 1rem 0;
}

.sidebar-content .nav {
    gap: 0;
}

.sidebar-content .nav-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-content .nav-item:last-child {
    border-bottom: none;
}

.sidebar-content .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.2s ease;
    text-decoration: none;
}

.sidebar-content .nav-link:hover {
    background: rgba(52, 152, 219, 0.2);
    color: white;
    padding-left: 1.2rem;
}

.sidebar-content .nav-link.active {
    background: var(--accent-color);
    color: white;
    border-left: 4px solid #fff;
    padding-left: 0.96rem;
}

.sidebar-content .nav-link i {
    min-width: 20px;
    text-align: center;
}

.sidebar-content .nav-label {
    display: block;
    padding: 0.75rem 1.25rem;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-top: 0.5rem;
}

.sidebar-content .collapse .nav-link {
    padding-left: 2.5rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.sidebar-content .collapse .nav-link:hover {
    background: rgba(52, 152, 219, 0.15);
}

.sidebar-content .collapse .nav-link.active {
    color: white;
    background: rgba(52, 152, 219, 0.3);
}

.sidebar-text {
    transition: opacity 0.3s ease;
}

/* Main content styles */
.main-content {
    overflow-y: auto;
    padding: 0;
    background: #f5f6fa;
}

.content-wrapper {
    padding: 2rem;
}

/* Toggle button for sidebar */
.sidebar-toggle {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.sidebar-toggle:hover {
    background: var(--secondary-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .sidebar-nav {
        position: fixed;
        left: -280px;
        top: 0;
        height: 100vh;
        z-index: 1000;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.2);
    }

    .sidebar-nav.show {
        left: 0;
    }
}

/* Collapsed Sidebar State */
.sidebar-nav.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-nav.collapsed .sidebar-text {
    display: none;
}

.sidebar-nav.collapsed .sidebar-header {
    justify-content: center;
    padding: 1rem !important;
}

.sidebar-nav.collapsed .sidebar-header h5 {
    font-size: 0.9rem;
}

.sidebar-nav.collapsed .nav-link {
    justify-content: center;
    padding: 0.75rem !important;
}

.sidebar-nav.collapsed .nav-link i {
    margin-right: 0 !important;
    min-width: auto;
}

.sidebar-nav.collapsed .nav-label,
.sidebar-nav.collapsed .collapse {
    display: none;
}

/* Expanded Main Content */
.main-content.expanded {
    flex: 1;
}