@charset "UTF-8";

/* Logo样式 - 统一设计系统 */
.footer-logo {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: none;
    position: relative;
    display: inline-block;
    padding: 0.5rem 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

/* 产品筛选样式 */
.filter-section {
    margin-bottom: 1.5rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.filter-section:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.filter-section .card-title {
    font-weight: 600;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 10px;
    margin-bottom: 15px;
}

.category-level-label {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
}

.category-level-label .badge {
    font-weight: 500;
    padding: 0.4rem 0.7rem;
    border-radius: 4px;
}

.category-primary {
    background: linear-gradient(to right, rgba(13, 110, 253, 0.05), rgba(13, 110, 253, 0.1));
    border-radius: 8px;
    transition: all 0.3s ease;
}

.category-primary:hover {
    background: linear-gradient(to right, rgba(13, 110, 253, 0.08), rgba(13, 110, 253, 0.15));
}

.category-secondary {
    position: relative;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.category-secondary:hover {
    background-color: rgba(108, 117, 125, 0.05);
}

.category-connector {
    position: absolute;
    top: -10px;
    left: 20px;
    width: 2px;
    height: 10px;
    background-color: #6c757d;
}

/* 按钮样式美化 */
.primary-btn {
    transition: all 0.2s ease;
    margin: 3px;
    border-radius: 6px;
}

.primary-btn:hover:not(.active):not(.disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1) !important;
}

.primary-btn.active {
    position: relative;
    overflow: hidden;
}

.primary-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: rgba(255, 255, 255, 0.7);
}

.secondary-btn {
    transition: all 0.2s ease;
    margin: 2px;
    border-radius: 4px;
}

.secondary-btn:hover:not(.active):not(.disabled) {
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
}

.secondary-btn.active {
    position: relative;
}

.secondary-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: rgba(108, 117, 125, 0.5);
}

.secondary-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 参数筛选区美化 */
.parameter-filters {
    border-radius: 8px;
    background-color: #f8f9fa;
    padding: 15px;
    margin-top: 15px;
}

.parameter-filters .form-label {
    font-weight: 500;
    color: #495057;
    margin-bottom: 5px;
}

.parameter-filters select.form-select {
    border-radius: 6px;
    border: 1px solid #dee2e6;
    padding: 8px 12px;
    transition: all 0.2s ease;
}

.parameter-filters select.form-select:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.parameter-filters select.form-select option:disabled {
    color: #adb5bd;
    background-color: #f1f3f5;
}

/* 筛选按钮组 */
.filter-actions {
    margin-top: 20px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.filter-actions .btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.filter-actions .btn-outline-secondary:hover {
    background-color: #6c757d;
    color: white;
}

.filter-actions .btn-primary:hover {
    background-color: #0056b3;
}

/* 参数组提示美化 */
.parameter-hint {
    border-radius: 6px;
    padding: 10px 15px;
    margin-bottom: 15px;
    border-left: 4px solid #28a745;
    background-color: rgba(40, 167, 69, 0.05);
}

.footer-logo .vis {
    font-size: 2.2rem;
    font-weight: 400;
    color: #42a5f5;
    text-transform: lowercase;
    letter-spacing: 0.5px;
    position: relative;
    display: inline-block;
    transform: translateY(1px);
}

.footer-logo .ndt {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1976d2;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    display: inline-block;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.footer-logo::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #2196F3, #1976D2);
    border-radius: 2px;
    transform: scaleX(0);
    transition: none;
    display: none;
}

.footer-logo:hover::after {
    transform: scaleX(0);
}

.footer-logo-subtext {
    font-size: 1rem;
    color: #757575;
    margin-top: 0.5rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    line-height: 1.5;
}

/* 导航栏Logo样式 */
.navbar-brand .footer-logo {
    font-size: 2rem;
}

.navbar-brand .footer-logo .vis {
    font-size: 1.8rem;
    letter-spacing: 1px;
    font-weight: 400;
}

.navbar-brand .footer-logo .ndt {
    font-size: 2rem;
}

/* 导航菜单样式 - 现代化设计 */
.navbar-nav .nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-secondary);
    position: relative;
    transition: all var(--transition-normal);
    margin: 0 var(--spacing-xs);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.navbar-nav {
    gap: var(--spacing-xs);
}

/* 悬停效果增强 */
.navbar-nav .nav-link:hover {
    color: var(--color-primary-600);
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.15);
}

/* 底部装饰线动画 */
.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary-600), #f59e0b);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::before {
    width: 80%;
}

/* 激活状态 */
.navbar-nav .nav-link.active {
    color: var(--color-primary-600);
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
    font-weight: var(--font-weight-semibold);
}

.navbar-nav .nav-link.active::before {
    width: 80%;
}

/* 移动端导航优化 */
@media (max-width: 991.98px) {
    .navbar-nav .nav-link {
        padding: var(--spacing-md);
        margin: var(--spacing-xs) 0;
        text-align: center;
        border-radius: var(--radius-lg);
    }

    .navbar-nav .nav-link:hover {
        transform: translateY(0);
        background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
    }

    .navbar-collapse {
        background: var(--bg-primary);
        border-radius: var(--radius-lg);
        margin-top: var(--spacing-sm);
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }
}

/* 搜索按钮样式优化 */
.btn-outline-primary {
    border: 2px solid var(--color-primary-600);
    color: var(--color-primary-600);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-outline-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(25, 118, 210, 0.1), transparent);
    transition: left var(--transition-slow);
}

.btn-outline-primary:hover::before {
    left: 100%;
}

.btn-outline-primary:hover {
    background: var(--color-primary-600);
    border-color: var(--color-primary-600);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3);
}

/* 分类菜单样式 - 统一设计 */
.category-menu .list-group-item {
    font-size: 14px;
    font-weight: 500;
    padding: 0.75rem 1.25rem;
    border: none;
    background-color: transparent;
    transition: all 0.15s ease-in-out;
    color: #616161;
    border-radius: 8px;
    margin-bottom: 2px;
}

.category-menu .list-group-item:hover {
    color: #1976d2;
    background-color: rgba(25, 118, 210, 0.08);
    transform: translateX(3px);
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.15);
}

.category-menu .list-group-item.active {
    color: #1976d2;
    background-color: rgba(25, 118, 210, 0.12);
    font-weight: 600;
}

/* 子分类菜单样式 - 统一设计 */
.subcategory-menu {
    font-size: 13px;
    padding-left: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    border-radius: 8px;
    background-color: #fafafa;
}

.subcategory-menu .list-group-item {
    padding: 0.6rem 1rem;
    color: #757575;
    transition: all 0.15s ease-in-out;
    border-radius: 6px;
    margin-bottom: 1px;
}

.subcategory-menu .list-group-item:hover {
    color: #1976d2;
    background-color: rgba(25, 118, 210, 0.06);
    transform: translateX(2px);
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.navbar-nav .nav-link,
.category-menu .list-group-item {
    animation: fadeIn 0.3s ease-out;
}