/* 图片导航滑块专用样式 - 分类菜单导航 避免与顶部导航冲突 */

/* 图片导航容器 */
.image-navigation-container {
    background: white;
    padding: 1rem 0;
    margin: 0;
    overflow: visible;
    width: 100%;
}

/* 图片导航标题区域 */
.image-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 0 1rem 0;
    margin-bottom: 30px;
}

.image-nav-title {
    font-size: 2rem;
    font-weight: 700;
    color: #333;
    margin: 0;
}

.image-nav-description {
    font-size: 1rem;
    color: #9e9e9e;
    text-decoration: none;
    transition: color 0.3s ease;
}

.image-nav-description:hover {
    color: #333;
}

/* 图片导航菜单 */
.image-nav-menu {
    position: relative;
    padding: 0;
    text-align: left;
    overflow: visible;
}

.image-nav-menu .keen-slider__slide {
    min-width: 230px;
    display: flex;
    justify-content: flex-start;
}

/* 图片导航控制按钮 */
.image-nav-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.image-nav-controls.prev { left: 1rem; }
.image-nav-controls.next { right: 1rem; }

.image-nav-menu:hover .image-nav-controls { opacity: 0.7; visibility: visible; }
.image-nav-controls:hover { opacity: 1; }

.image-control-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: transparent;
    color: #333;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.image-control-btn:hover { background: rgba(255, 255, 255, 0.8); transform: scale(1.1); }
.image-control-btn:active, .image-control-btn:focus { 
    background: rgba(255, 255, 255, 0.9); 
    backdrop-filter: blur(20px); 
    -webkit-backdrop-filter: blur(20px); 
    transform: scale(0.95); 
    outline: none; 
}

/* 图片导航项 */
.image-nav-item {
    width: 230px;
    height: 308px;
    background: white;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    text-decoration: none;
    color: inherit;
    display: block;
}

.image-nav-item:hover { transform: translateY(-8px); }
.image-nav-item.active { transform: translateY(-5px); }

.image-nav-image {
    width: 100%;
    height: 308px;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.image-nav-item:hover .image-nav-image { transform: scale(1.05); }

.image-nav-text {
    color: white;
    font-size: 1.2rem;
    font-weight: 300;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
    position: relative;
    z-index: 2;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-decoration: none !important; /* 清除下划线 */
}

/* 清除图片导航链接的下划线 - 覆盖Bootstrap的全局样式 */
.image-nav-item a {
    text-decoration: none !important;
}

.image-nav-item a:hover {
    text-decoration: none !important;
}

.image-nav-item a:focus {
    text-decoration: none !important;
}

.image-nav-item a:visited {
    text-decoration: none !important;
}

/* SEO友好模式：完整标题样式 */
.image-nav-text.seo-full {
    display: -webkit-box;
    -webkit-line-clamp: 3; /* 允许最多3行 */
    line-clamp: 3; /* 标准属性 */
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word; /* 更自然的换行 */
    word-wrap: break-word;
    text-decoration: none !important; /* 清除下划线 */
}

/* 响应式设计 */
@media (max-width: 768px) {
    .image-navigation-container { padding: 2rem 0; }
    .image-nav-header { padding: 0 0 0.8rem 0; margin-bottom: 20px; }
    .image-nav-title { font-size: 1.6rem; }
    .image-nav-description { font-size: 0.9rem; }
    .image-nav-controls.prev { left: 0.5rem; }
    .image-nav-controls.next { right: 0.5rem; }
    .image-control-btn { width: 50px; height: 50px; font-size: 1rem; }
    .image-nav-menu .keen-slider__slide { min-width: 180px; margin-right: 8px; }
    .image-nav-menu .keen-slider__slide:last-child { margin-right: 20px; }
    .image-nav-item { width: 180px; height: 250px; }
    .image-nav-image { height: 250px; }
    .image-nav-text { font-size: 1rem; }
}

@media (max-width: 480px) {
    .image-navigation-container { padding: 1.5rem 0; }
    .image-nav-header { margin-bottom: 15px; }
    .image-nav-title { font-size: 1.4rem; }
    .image-nav-controls.prev { left: 0.25rem; }
    .image-nav-controls.next { right: 0.25rem; }
    .image-control-btn { width: 40px; height: 40px; font-size: 0.9rem; }
    .image-nav-menu .keen-slider__slide { min-width: 150px; margin-right: 5px; }
    .image-nav-menu .keen-slider__slide:last-child { margin-right: 15px; }
    .image-nav-item { width: 150px; height: 220px; }
    .image-nav-image { height: 220px; }
    .image-nav-text { font-size: 0.9rem; }
}

/* 加载动画 */
.image-nav-item {
    animation: imageNavFadeInUp 0.6s ease forwards;
}

.image-nav-item:nth-child(1) { animation-delay: 0.1s; }
.image-nav-item:nth-child(2) { animation-delay: 0.2s; }
.image-nav-item:nth-child(3) { animation-delay: 0.3s; }
.image-nav-item:nth-child(4) { animation-delay: 0.4s; }
.image-nav-item:nth-child(5) { animation-delay: 0.5s; }
.image-nav-item:nth-child(6) { animation-delay: 0.6s; }
.image-nav-item:nth-child(7) { animation-delay: 0.7s; }
.image-nav-item:nth-child(8) { animation-delay: 0.8s; }
.image-nav-item:nth-child(9) { animation-delay: 0.9s; }
.image-nav-item:nth-child(10) { animation-delay: 1.0s; }
.image-nav-item:nth-child(11) { animation-delay: 1.1s; }
.image-nav-item:nth-child(12) { animation-delay: 1.2s; }
.image-nav-item:nth-child(13) { animation-delay: 1.3s; }

@keyframes imageNavFadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 滚动条样式 */
.image-nav-menu::-webkit-scrollbar {
    height: 6px;
}

.image-nav-menu::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.image-nav-menu::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 3px;
}

.image-nav-menu::-webkit-scrollbar-thumb:hover {
    background: #5a6fd8;
}