/* 标准分类专用样式 - classification.css */

/* 分类横幅 */
.classification-banner {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #fff;
    padding: 60px 0;
    margin-bottom: 30px;
    border-radius: 12px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.classification-banner::before {
    content: '🗂️';
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
    font-size: 150px;
    opacity: 0.1;
}

.classification-banner h1 {
    font-size: 36px;
    margin-bottom: 15px;
    font-weight: bold;
    position: relative;
    z-index: 1;
}

.classification-banner p {
    font-size: 18px;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* 面包屑导航 */
.breadcrumb {
    background-color: #fff;
    padding: 15px 25px;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    list-style: none;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.breadcrumb-item a {
    color: #4facfe;
    text-decoration: none;
    transition: all 0.3s;
}

.breadcrumb-item a:hover {
    color: #00f2fe;
}

.breadcrumb-item.active {
    color: #333;
    font-weight: bold;
}

.breadcrumb-separator {
    color: #999;
}

/* 分类视图切换 */
.view-switcher {
    background-color: #fff;
    padding: 20px 25px;
    border-radius: 8px;
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.view-buttons {
    display: flex;
    gap: 10px;
}

.view-btn {
    padding: 8px 20px;
    border: 2px solid #e0e0e0;
    background-color: #fff;
    color: #666;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.view-btn:hover {
    border-color: #4facfe;
    color: #4facfe;
}

.view-btn.active {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #fff;
    border-color: transparent;
}

.sort-select {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
}

/* 统计信息 */
.classification-stats {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.classification-stat-card {
    background-color: #fff;
    border-radius: 8px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
}

.classification-stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.classification-stat-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.classification-stat-number {
    font-size: 28px;
    font-weight: bold;
    color: #4facfe;
    margin-bottom: 8px;
}

.classification-stat-label {
    font-size: 14px;
    color: #666;
}

/* 分类卡片 - 树状视图 */
.category-tree {
    background-color: #fff;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
}

.category-level-1 {
    margin-bottom: 30px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 15px;
}

.category-header:hover {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #fff;
    transform: translateX(5px);
}

.category-icon {
    font-size: 36px;
    flex-shrink: 0;
}

.category-info {
    flex: 1;
}

.category-name {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 5px;
}

.category-count {
    font-size: 14px;
    opacity: 0.8;
}

.category-arrow {
    font-size: 24px;
    transition: transform 0.3s;
}

.category-header.expanded .category-arrow {
    transform: rotate(90deg);
}

.category-children {
    display: none;
    padding-left: 40px;
    margin-top: 15px;
}

.category-children.active {
    display: block;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.category-level-2 {
    margin-bottom: 15px;
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    background-color: #f8f8f8;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.category-item:hover {
    background-color: #e3f2fd;
    border-left-color: #4facfe;
    transform: translateX(5px);
}

.category-item-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.category-item-icon {
    font-size: 24px;
}

.category-item-name {
    font-size: 16px;
    color: #333;
    font-weight: 500;
}

.category-item-count {
    padding: 4px 12px;
    background-color: #e0e0e0;
    border-radius: 12px;
    font-size: 13px;
    color: #666;
}

/* 网格视图 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 30px;
}

.category-card {
    background-color: #fff;
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid #f0f0f0;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);
    transition: all 0.4s;
}

.category-card:hover::before {
    left: 0;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    border-color: #4facfe;
}

.category-card-icon {
    font-size: 64px;
    margin-bottom: 20px;
    display: block;
}

.category-card-name {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.category-card-count {
    font-size: 14px;
    color: #999;
}

.category-card-desc {
    font-size: 13px;
    color: #666;
    margin-top: 10px;
    line-height: 1.6;
}

/* 标准列表 */
.standards-list {
    background-color: #fff;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
}

.standards-table {
    width: 100%;
    border-collapse: collapse;
}

.standards-table th {
    background-color: #f8f8f8;
    padding: 15px;
    text-align: left;
    font-weight: bold;
    border-bottom: 2px solid #e0e0e0;
    color: #333;
}

.standards-table td {
    padding: 15px;
    border-bottom: 1px solid #f0f0f0;
    color: #666;
}

.standards-table tr:hover {
    background-color: #fafafa;
}

.standard-number {
    color: #4facfe;
    font-weight: bold;
    cursor: pointer;
}

.standard-number:hover {
    text-decoration: underline;
}

.standard-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
}

.status-current {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.status-upcoming {
    background-color: #fff3e0;
    color: #f57c00;
}

.status-obsolete {
    background-color: #ffebee;
    color: #c62828;
}

/* 搜索框 */
.category-search {
    background-color: #fff;
    border-radius: 8px;
    padding: 25px 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.category-search-box {
    position: relative;
}

.category-search-box input {
    width: 100%;
    padding: 15px 120px 15px 20px;
    border: 2px solid #4facfe;
    border-radius: 50px;
    font-size: 15px;
    transition: all 0.3s;
}

.category-search-box input:focus {
    outline: none;
    box-shadow: 0 0 10px rgba(79, 172, 254, 0.3);
}

.category-search-box button {
    position: absolute;
    right: 5px;
    top: 5px;
    padding: 10px 30px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #fff;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 15px;
    transition: all 0.3s;
}

.category-search-box button:hover {
    background: linear-gradient(135deg, #3d95e0 0%, #00d4e4 100%);
}

/* ICS分类 */
.ics-nav {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 25px;
}

.ics-tab {
    padding: 10px 20px;
    background-color: #f8f8f8;
    border: 2px solid transparent;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
    color: #666;
}

.ics-tab:hover {
    background-color: #4facfe;
    color: #fff;
    border-color: #4facfe;
}

.ics-tab.active {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #fff;
    border-color: transparent;
    font-weight: bold;
}

/* 快速导航 */
.quick-nav {
    background-color: #fff;
    border-radius: 8px;
    padding: 25px 30px;
    margin-bottom: 30px;
}

.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 15px;
}

.quick-nav-item {
    padding: 15px 10px;
    text-align: center;
    background-color: #f8f8f8;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
    color: #333;
}

.quick-nav-item:hover {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: #fff;
    transform: translateY(-3px);
}

/* 响应式 */
@media (max-width: 768px) {
    .classification-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .view-switcher {
        flex-direction: column;
        gap: 15px;
    }

    .view-buttons {
        width: 100%;
        justify-content: center;
    }

    .sort-select {
        width: 100%;
    }

    .classification-banner h1 {
        font-size: 28px;
    }

    .category-header {
        padding: 15px;
    }

    .category-name {
        font-size: 18px;
    }

    .ics-nav {
        gap: 10px;
    }

    .ics-tab {
        padding: 8px 15px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .classification-stats {
        grid-template-columns: 1fr;
    }

    .category-grid {
        grid-template-columns: 1fr;
    }

    .standards-table {
        font-size: 13px;
    }

    .standards-table th,
    .standards-table td {
        padding: 10px 8px;
    }

    .quick-nav-grid {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
        gap: 10px;
    }

    .quick-nav-item {
        padding: 12px 8px;
        font-size: 13px;
    }
}