.sidebar {
    width: 200px;
    background-color: var(--color-sidebar);
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 1000;
    border-right: 1px solid var(--color-border);
}

.logo-section {
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background-color: var(--color-primary);
    border-radius: 8px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon::before {
    content: '';
    width: 16px;
    height: 16px;
    background-color: white;
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}

.sidebar-nav ul {
    list-style: none;
    padding: 8px 0;
}

.nav-item {
    position: relative;
}

.nav-item a {
    display: flex;
    align-items: center;
    padding: 11px 20px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-item a:hover {
    background-color: var(--color-sidebar-hover);
    color: var(--color-text);
}

.nav-item.active > a {
    background-color: var(--color-sidebar-active-bg);
    color: var(--color-primary);
    border-left: 3px solid var(--color-primary);
}

.nav-item a svg {
    width: 16px;
    height: 16px;
    margin-right: 10px;
    flex-shrink: 0;
}

.expand-icon {
    margin-left: auto;
    transition: transform 0.2s ease;
}

.nav-item.active .expand-icon {
    transform: rotate(90deg);
}

.sub-menu {
    background-color: #f8fafc;
    display: none;
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
}

.nav-item.active .sub-menu {
    display: block;
}

.sub-menu li a {
    padding: 9px 20px 9px 50px;
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 400;
}

.sub-menu li a:hover {
    background-color: var(--color-sidebar-hover);
    color: var(--color-text);
}

.sub-menu li.active-sub a {
    color: var(--color-primary);
    background-color: var(--color-sidebar-active-bg);
    font-weight: 500;
}