.sidebar {
    width: 250px;
    background: linear-gradient(to bottom, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.05);
    padding: 20px;
    position: sticky;
    top: 0;
}

.nav-header .logo {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.logo-circle {
    width: 35px;
    height: 35px;
    background: var(--white);
    border-radius: 50%;
    margin-right: 10px;
}

.logo-text {
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--white);
}

.nav-menu .nav-link {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    color: var(--white);
    border-radius: 8px;
    text-decoration: none;
    margin-bottom: 10px;
    transition: var(--transition);
    font-size: 0.95rem;
}

    .nav-menu .nav-link i {
        margin-right: 8px;
    }

    .nav-menu .nav-link:hover,
    .nav-menu .nav-link.active {
        background: rgba(255, 255, 255, 0.15);
    }

.section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin: 20px 0 8px 5px;
}

.nav-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    font-weight: 600;
    padding: 10px 12px;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
}

    .nav-section-header:hover {
        background: rgba(255, 255, 255, 0.1);
    }

.arrow-icon {
    font-size: 0.85rem;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.3);
    z-index: 999;
}