/**
 * 移动端菜单紧凑优化
 * 减少空白，提升空间利用率
 */

/* ========== Offcanvas 紧凑布局 ========== */
.offcanvas-header {
    padding: 1rem 1.25rem !important;
    min-height: auto !important;
}

.offcanvas-title {
    font-size: 1.1rem !important;
    margin: 0 !important;
}

.offcanvas-body {
    padding: 0 !important;
    overflow-y: auto;
}

/* ========== 导航列表紧凑样式 ========== */
.mobile-nav {
    display: flex !important;
    flex-direction: column;
    gap: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
}

.mobile-nav .nav-link {
    display: block !important;
    padding: 0.875rem 1.25rem !important;
    margin: 0 !important;
    color: #333 !important;
    text-decoration: none !important;
    font-weight: 500 !important;
    font-size: 0.95rem !important;
    border-bottom: 1px solid #e8e8e8 !important;
    transition: all 0.3s ease !important;
    position: relative;
    background: white;
}

.mobile-nav .nav-link:first-child {
    border-top: 1px solid #e8e8e8;
}

.mobile-nav .nav-link:hover,
.mobile-nav .nav-link:active {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.08) 0%, transparent 100%) !important;
    color: #667eea !important;
    padding-left: 1.5rem !important;
}

.mobile-nav .nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.mobile-nav .nav-link:hover::before {
    width: 4px;
}

/* ========== 分隔线优化 ========== */
.mobile-nav hr {
    margin: 0.75rem 0 !important;
    border: 0 !important;
    border-top: 2px solid #e8e8e8 !important;
    opacity: 1 !important;
}

/* ========== 按钮区域紧凑 ========== */
.mobile-nav .btn {
    margin: 0.5rem 1.25rem !important;
    padding: 0.75rem 1.5rem !important;
    font-weight: 600 !important;
    border-radius: 8px !important;
    text-align: center !important;
    text-decoration: none !important;
    display: block !important;
    font-size: 0.95rem !important;
}

.mobile-nav .btn:first-of-type {
    margin-top: 0.75rem !important;
}

.mobile-nav .btn:last-of-type {
    margin-bottom: 1rem !important;
}

.mobile-nav .btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    border: none !important;
    color: white !important;
}

.mobile-nav .btn-warning {
    background: linear-gradient(135deg, #f7971e 0%, #ffd200 100%) !important;
    border: none !important;
    color: #1a1a2e !important;
}

.mobile-nav .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.mobile-nav .mb-2 {
    margin-bottom: 0.5rem !important;
}

.mobile-nav .w-100 {
    width: calc(100% - 2.5rem) !important;
}

/* ========== 移除多余间距 ========== */
.offcanvas * {
    margin-block-start: 0 !important;
    margin-block-end: 0 !important;
}

.mobile-nav > * {
    flex-shrink: 0;
}

/* ========== 图标优化（如果有） ========== */
.mobile-nav .nav-link i,
.mobile-nav .nav-link svg {
    margin-right: 0.5rem;
    width: 1.25rem;
    height: 1.25rem;
    vertical-align: middle;
}

/* ========== 滚动条优化 ========== */
.offcanvas-body::-webkit-scrollbar {
    width: 4px;
}

.offcanvas-body::-webkit-scrollbar-track {
    background: transparent;
}

.offcanvas-body::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 2px;
}

.offcanvas-body::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

/* ========== 小屏优化 ========== */
@media (max-width: 480px) {
    .offcanvas-start {
        width: 280px !important;
    }
    
    .offcanvas-header {
        padding: 0.875rem 1rem !important;
    }
    
    .mobile-nav .nav-link {
        padding: 0.75rem 1rem !important;
        font-size: 0.9rem !important;
    }
    
    .mobile-nav .nav-link:hover {
        padding-left: 1.25rem !important;
    }
    
    .mobile-nav .btn {
        margin: 0.5rem 1rem !important;
        padding: 0.65rem 1.25rem !important;
        font-size: 0.9rem !important;
    }
    
    .mobile-nav .w-100 {
        width: calc(100% - 2rem) !important;
    }
}

/* ========== 确保内容紧凑 ========== */
.offcanvas-body > nav:first-child {
    margin-top: 0 !important;
}

.offcanvas-body > nav:last-child {
    margin-bottom: 0 !important;
}

/* ========== 链接激活状态 ========== */
.mobile-nav .nav-link.active,
.mobile-nav .nav-link[aria-current="page"] {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.12) 0%, transparent 100%) !important;
    color: #667eea !important;
    font-weight: 600 !important;
}

.mobile-nav .nav-link.active::before {
    width: 4px;
}

/* ========== 触摸优化 ========== */
@media (hover: none) and (pointer: coarse) {
    .mobile-nav .nav-link {
        padding: 1rem 1.25rem !important;
        min-height: 48px;
        display: flex !important;
        align-items: center;
    }
    
    .mobile-nav .btn {
        min-height: 48px;
        display: flex !important;
        align-items: center;
        justify-content: center;
    }
}

/* ========== 防止内容溢出 ========== */
.mobile-nav .nav-link,
.mobile-nav .btn {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========== 优化按钮容器 ========== */
.mobile-nav-buttons {
    padding: 0.75rem 1.25rem 1rem;
    background: #f8f9fa;
    border-top: 1px solid #e8e8e8;
}

/* ========== 移除不必要的边距 ========== */
.offcanvas p,
.offcanvas h1,
.offcanvas h2,
.offcanvas h3,
.offcanvas h4,
.offcanvas h5,
.offcanvas h6 {
    margin: 0 !important;
}