/* 菜单栏样式 - 现代化苹果系统风格 */
.logo {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
    position: relative;
}

.logo h1 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition);
}

.menu {
    padding: 0 10px;
}

.menu ul {
    list-style: none;
}

.menu-item {
    margin-bottom: 4px;
}

.menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    text-decoration: none;
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    position: relative;
    font-weight: 500;
}

.menu-link:hover {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    transform: translateX(3px);
}

.menu-icon {
    font-size: 14px;
    width: 18px;
    text-align: center;
}

.menu-text {
    flex: 1;
    font-size: 13px;
    font-weight: 500;
}

.menu-arrow {
    font-size: 11px;
    transition: var(--transition);
    color: var(--text-secondary);
}

.menu-item.has-submenu .menu-link:hover .menu-arrow {
    transform: rotate(180deg) scale(1.1);
    color: var(--primary-color);
}

.submenu {
    display: none;
    margin-top: 4px;
    padding-left: 20px;
    animation: submenuSlideIn 0.3s ease;
}

@keyframes submenuSlideIn {
    from {
        opacity: 0;
        transform: translateX(-8px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.submenu li {
    margin-bottom: 3px;
}

.submenu a {
    display: block;
    padding: 8px 14px;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    font-size: 12px;
    transition: var(--transition);
    position: relative;
}

.submenu a:hover {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    transform: translateX(3px);
}

/* 展开状态 */
.menu-item.has-submenu.open .submenu {
    display: block;
}

.menu-item.has-submenu.open .menu-arrow {
    transform: rotate(180deg);
    color: var(--primary-color);
}

/* 激活状态 */
.menu-link.active {
    background-color: rgba(0, 113, 227, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.menu-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 18px;
    background-color: var(--primary-color);
    border-radius: 0 3px 3px 0;
}

.submenu a.active {
    background-color: rgba(0, 113, 227, 0.1);
    color: var(--primary-color);
    font-weight: 500;
}

.submenu a.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 14px;
    background-color: var(--primary-color);
    border-radius: 0 3px 3px 0;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .logo {
        padding: 0 18px 18px;
        margin-bottom: 18px;
    }
    
    .logo h1 {
        font-size: 15px;
    }
    
    .menu {
        padding: 0 8px;
    }
    
    .menu-link {
        padding: 9px 12px;
        gap: 10px;
    }
    
    .menu-text {
        font-size: 12px;
    }
    
    .submenu {
        padding-left: 16px;
    }
    
    .submenu a {
        padding: 7px 12px;
        font-size: 11px;
    }
}

@media (max-width: 768px) {
    .logo {
        padding: 0 16px 16px;
        margin-bottom: 16px;
    }
    
    .logo h1 {
        font-size: 14px;
    }
    
    .menu-link {
        padding: 8px 10px;
        gap: 8px;
    }
    
    .menu-text {
        font-size: 12px;
    }
    
    .submenu {
        padding-left: 14px;
    }
    
    .submenu a {
        padding: 6px 10px;
        font-size: 11px;
    }
}

/* 滚动条样式 */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: var(--secondary-color);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}