/* css/footer.css - 通用底部导航样式 */

/* 悬浮底部导航样式 */
.floating-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: white;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 8px 0;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.floating-nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 10px;
}

.floating-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #666;
    padding: 4px 6px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 11px;
    flex: 1; /* 等分空间 */
    min-width: 0; /* 允许缩小 */
    max-width: 80px; /* 最大宽度限制 */
    height: 50px;
}

.floating-nav-item i {
    font-size: 16px;
    margin-bottom: 3px;
    transition: transform 0.2s ease;
}

.floating-nav-item span {
    font-size: 10px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    line-height: 1.2;
}

.floating-nav-item:hover {
    background-color: #f5f5f5;
    color: var(--primary-color, #007bff);
}

.floating-nav-item:hover i {
    transform: translateY(-1px);
}

.floating-nav-item.active {
    background-color: var(--primary-color, #007bff);
    color: white;
}

.floating-nav-item.active:hover {
    background-color: var(--secondary-color, #0056b3);
    color: white;
}

/* 备案信息链接特殊处理 */
.floating-nav-item[target="_blank"] {
    background-color: #f8f9fa;
    color: #495057;
    font-weight: normal;
}

.floating-nav-item[target="_blank"]:hover {
    background-color: #e9ecef;
    color: var(--primary-color, #007bff);
}

/* 主底部区域样式 */
.main-footer {
    padding: 20px 0;
    background-color: #f8f9fa;
    color: #666;
    text-align: center;
    border-top: 1px solid #dee2e6;
    margin-top: 60px; /* 为悬浮导航留出空间 */
}

.main-footer a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
}

.main-footer a:hover {
    color: var(--primary-color, #007bff);
}

.main-footer .mt-1 {
    margin-top: 10px;
}

.main-footer .me-1 {
    margin-right: 5px;
}

/* 响应式设计 - 通用移动端优化 */
@media (max-width: 768px) {
    .floating-footer {
        padding: 6px 0;
    }
    
    .floating-nav {
        padding: 0 8px;
    }
    
    .floating-nav-item {
        padding: 3px 4px;
        height: 48px;
        border-radius: 6px;
    }
    
    .floating-nav-item i {
        font-size: 15px;
        margin-bottom: 2px;
    }
    
    .floating-nav-item span {
        font-size: 9px;
    }
    
    /* 当项目过多时，进一步缩小 */
    .floating-nav-item:nth-child(n+7) span {
        font-size: 8px;
    }
    
    /* 为移动设备优化触摸目标 */
    .floating-nav-item {
        min-height: 44px; /* 苹果推荐的最小触摸目标尺寸 */
    }
}

/* 小屏幕设备优化 */
@media (max-width: 480px) {
    .floating-nav-item {
        padding: 2px 3px;
        height: 46px;
    }
    
    .floating-nav-item i {
        font-size: 14px;
        margin-bottom: 1px;
    }
    
    .floating-nav-item span {
        font-size: 8px;
    }
    
    /* 长文本特殊处理 */
    .floating-nav-item[target="_blank"] span {
        font-size: 7px;
        word-break: break-word;
        white-space: normal;
        line-height: 1.1;
        max-height: 20px;
        overflow: hidden;
    }
}

/* 超小屏幕优化（如某些旧款手机） */
@media (max-width: 360px) {
    .floating-nav {
        padding: 0 5px;
    }
    
    .floating-nav-item {
        padding: 2px;
        min-width: 50px;
    }
    
    .floating-nav-item i {
        font-size: 13px;
    }
    
    .floating-nav-item span {
        font-size: 7px;
    }
    
    .floating-nav-item[target="_blank"] span {
        font-size: 6px;
    }
}

/* 平板设备优化 */
@media (min-width: 769px) and (max-width: 1024px) {
    .floating-nav-item {
        max-width: 100px;
    }
    
    .floating-nav-item i {
        font-size: 18px;
    }
    
    .floating-nav-item span {
        font-size: 11px;
    }
}

/* 防止内容被悬浮导航遮挡 */
body {
    padding-bottom: 70px; /* 根据实际底部导航高度调整 */
}

/* 在移动设备上优化滚动体验 */
@media (hover: none) and (pointer: coarse) {
    .floating-nav-item {
        -webkit-tap-highlight-color: transparent;
    }
    
    .floating-nav-item:active {
        background-color: rgba(0, 123, 255, 0.1);
        transition: background-color 0.1s;
    }
}

/* 支持暗色模式 */
@media (prefers-color-scheme: dark) {
    .floating-footer {
        background-color: rgba(30, 30, 30, 0.95);
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
    }
    
    .floating-nav-item {
        color: #bbb;
    }
    
    .floating-nav-item:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: var(--primary-color, #66b3ff);
    }
    
    .floating-nav-item[target="_blank"] {
        background-color: rgba(255, 255, 255, 0.05);
        color: #aaa;
    }
    
    .floating-nav-item[target="_blank"]:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: var(--primary-color, #66b3ff);
    }
}

/* 辅助功能优化 */
.floating-nav-item:focus {
    outline: 2px solid var(--primary-color, #007bff);
    outline-offset: 2px;
}

/* 减少动画以支持偏好设置 */
@media (prefers-reduced-motion: reduce) {
    .floating-nav-item,
    .floating-nav-item i {
        transition: none;
    }
}