.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    z-index: 1000;
    overflow-y: auto;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    text-align: center;
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.sidebar-logo i {
    font-size: 2rem;
}

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

.sidebar-menu-item {
    display: block;
    padding: 0.875rem 1.5rem;
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.sidebar-menu-item:hover {
    background: var(--gray-100);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    text-decoration: none;
}

.sidebar-menu-item.active {
    background: var(--secondary-color);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.sidebar-menu-item i {
    width: 20px;
    margin-right: 0.75rem;
    font-size: 1.125rem;
}

.sidebar-menu-group {
    margin-bottom: 1.5rem;
}

.sidebar-menu-group-title {
    padding: 0.5rem 1.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-200);
    background: var(--white);
}

.sidebar-user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: 0.5rem;
    background: var(--gray-50);
}

.sidebar-user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
}

.sidebar-user-details h6 {
    margin: 0;
    font-size: 0.875rem;
    color: var(--gray-800);
}

.sidebar-user-details p {
    margin: 0;
    font-size: 0.75rem;
    color: var(--gray-600);
}

/* Mobile Sidebar */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: var(--shadow-xl);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .sidebar-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .sidebar-backdrop.show {
        opacity: 1;
        visibility: visible;
    }
}