/* ================================================
   HS编码查询工具专用样式
   ================================================ */

/* 全局防溢出控制 - 仅在必要时限制宽度，不影响sticky定位 */
html, body {
    width: 100%;
    max-width: 100vw; /* 限制最大宽度为视口宽度 */
}

.tools-container {
    width: 100%;
    max-width: 100vw;
}

.tools-main {
    width: 100%;
}

/* 搜索区域 */
.search-section {
    margin-bottom: 2rem;
}

.search-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.search-header {
    padding: 2rem 2rem 1rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    color: white;
}

.search-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.search-subtitle {
    font-size: 1rem;
    opacity: 0.9;
    margin: 0;
}

/* 搜索表单 */
.search-form {
    padding: 2rem;
}

/* HS编码说明 */
.hscode-description {
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, rgba(74, 156, 1, 0.03) 0%, rgba(74, 156, 1, 0.01) 100%);
    border-bottom: 1px solid var(--border-light);
    border-radius: 20px;
    margin-top: 40px;
}

.hscode-description p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    text-align: justify;
}

.hscode-description strong {
    color: var(--text-primary);
    font-weight: 600;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.form-label i {
    color: var(--primary-green);
    font-size: 1rem;
}

.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(74, 156, 1, 0.1);
    background: var(--bg-primary);
}

/* 修复浏览器自动填充样式 */
.form-input:-webkit-autofill,
.form-input:-webkit-autofill:hover,
.form-input:-webkit-autofill:focus,
.form-input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px var(--bg-primary) inset !important;
    -webkit-text-fill-color: var(--text-primary) !important;
    background: var(--bg-primary) !important;
    border-color: var(--primary-green) !important;
}

/* 修复Firefox自动填充样式 */
.form-input:-moz-autofill {
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
}

.form-input.error {
    border-color: var(--error-color, #dc3545);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-input.error:focus {
    border-color: var(--error-color, #dc3545);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.2);
}

/* 错误提示样式 */
.input-hint-error {
    font-size: 0.75rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--error-color, #dc3545);
    font-weight: 500;
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-input::placeholder {
    color: var(--text-muted);
}

.input-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* 搜索按钮 */
.search-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-direction: row-reverse; /* PC端：开始查询按钮在右侧，重置按钮在左侧 */
}

.search-btn {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    overflow: hidden;
    min-width: 140px;
    justify-content: center;
}

.search-btn.primary {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    color: white;
    box-shadow: var(--shadow-md);
}

.search-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.search-btn.primary:disabled {
    background: var(--gray-300);
    color: var(--gray-500);
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--shadow-sm);
}

.search-btn.secondary {
    background: linear-gradient(135deg, rgba(74, 156, 1, 0.08), rgba(74, 156, 1, 0.05));
    color: var(--primary-green-dark);
    border: 1px solid rgba(74, 156, 1, 0.2);
    box-shadow: 0 2px 8px rgba(74, 156, 1, 0.1);
}

.search-btn.secondary:hover {
    background: linear-gradient(135deg, rgba(74, 156, 1, 0.15), rgba(74, 156, 1, 0.1));
    color: var(--primary-green);
    border-color: rgba(74, 156, 1, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 156, 1, 0.15);
}

/* 按钮波纹效果 */
.btn-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.search-btn:active .btn-ripple {
    width: 300px;
    height: 300px;
}

/* 结果区域 */
.results-section {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-header {
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, rgba(74, 156, 1, 0.03) 0%, rgba(74, 156, 1, 0.01) 100%);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.results-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.results-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.results-stats {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    flex: 1;
    text-align: right;
    padding-left:4px;
}

/* 结果列表 */
.results-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
    overflow-x: hidden; /* 防止水平滚动 */
}

.result-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    gap: 1rem;
    min-height: 60px;
    width: 100%;
    box-sizing: border-box; /* 确保padding不会导致溢出 */
}

.result-item:hover {
    border-color: var(--primary-green-soft);
    box-shadow: 0 4px 20px rgba(74, 156, 1, 0.12);
    transform: translateX(4px);
    background: linear-gradient(90deg, var(--bg-primary) 0%, rgba(74, 156, 1, 0.02) 100%);
}

.result-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-green), var(--primary-green-soft));
    transform: scaleY(0);
    transition: transform var(--transition-fast);
    border-radius: 0 2px 2px 0;
}

.result-item:hover::before {
    transform: scaleY(1);
}

.result-item::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 1rem;
    width: 6px;
    height: 10px;
    border: solid var(--primary-green-soft);
    border-width: 0 2px 2px 0;
    transform: translateY(-50%) rotate(45deg);
    opacity: 0;
    transition: all var(--transition-fast);
}

.result-item:hover::after {
    opacity: 1;
    transform: translateY(-50%) rotate(45deg) translateX(2px);
}

.result-content {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 0;
}

.result-code-section {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.result-code {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-green);
    font-family: 'SF Mono', 'Monaco', 'Menlo', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
    background: linear-gradient(135deg, rgba(74, 156, 1, 0.08) 0%, rgba(74, 156, 1, 0.04) 100%);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(74, 156, 1, 0.15);
    min-width: 100px;
    text-align: center;
    letter-spacing: 0.8px;
    font-variant-numeric: tabular-nums;
    text-shadow: 0 1px 2px rgba(74, 156, 1, 0.1);
    position: relative;
    overflow: hidden;
}

.result-code::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s ease;
}

.result-item:hover .result-code::before {
    left: 100%;
}

.result-item::after {
    display: none;
}

.result-probability {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-soft));
    color: white;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(74, 156, 1, 0.2);
    flex-shrink: 0;
}

.result-info {
    flex: 1;
    min-width: 0; /* 关键：允许flex item缩小到内容尺寸以下 */
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    overflow: hidden; /* 防止内容溢出 */
}

.result-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2; /* 标准属性 */
    -webkit-box-orient: vertical;
    margin: 0;
}

.result-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    line-clamp: 1; /* 标准属性 */
    -webkit-box-orient: vertical;
    margin: 0;
}

.result-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
    opacity: 0.8;
    flex-wrap: wrap;
}

.result-tax-info {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.tax-rate {
    background: var(--gray-200);
    color: #292b2e;
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.65rem;
}

/* 展开状态 */
.result-item.expanded {
    min-height: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(74, 156, 1, 0.02) 100%);
    border-color: var(--primary-green-soft);
    box-shadow: 0 8px 32px rgba(74, 156, 1, 0.15);
}

.result-item.expanded .result-content {
    width: 100%;
}

.result-item.expanded .result-info {
    flex-direction: row;
    align-items: flex-start;
    gap: 1rem;
}

.result-item.expanded .result-name,
.result-item.expanded .result-description {
    -webkit-line-clamp: unset;
    line-clamp: unset; /* 标准属性 */
    overflow: visible;
    display: block;
}

.result-expanded-content {
    display: none;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
    animation: slideDown 0.3s ease-out;
}

.result-item.expanded .result-expanded-content {
    display: block;
}

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

.result-details {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.detail-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

/* PC端：保持detail-row-pair与其他detail-item相同的布局 */
.detail-row-pair {
    display: contents;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

.detail-item:hover {
    background: var(--primary-green-alpha);
    border-color: rgba(74, 156, 1, 0.2);
}

.detail-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.detail-value {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 600;
    text-align: right;
}

/* 高亮显示关键字段值 */
.detail-value-highlight {
    color: var(--primary-green) !important;
    font-weight: 700 !important;
    font-size: 0.9rem !important;
}

.result-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.action-btn-small {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    width: 110px;
    height: 40px;
    box-sizing: border-box;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.action-btn-small:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
    background: var(--primary-green-alpha);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 156, 1, 0.15);
}

.action-btn-small.primary {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-soft));
    color: white;
    border-color: var(--primary-green);
}

.action-btn-small.primary:hover {
    background: linear-gradient(135deg, var(--primary-green-dark), var(--primary-green));
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(74, 156, 1, 0.25);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem;
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-medium);
    background: var(--bg-primary);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.pagination-btn:hover {
    border-color: var(--primary-green);
    color: var(--primary-green);
}

.pagination-btn.active {
    background: var(--primary-green);
    color: white;
    border-color: var(--primary-green);
}

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

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0 1rem;
}

/* 空状态 */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 2px dashed var(--border-medium);
}

.empty-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

.empty-icon i {
    font-size: 2rem;
}

.empty-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 400px;
}

.empty-action {
    padding: 0.75rem 1.5rem;
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.empty-action:hover {
    background: var(--primary-green-dark);
    transform: translateY(-1px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .search-header {
        padding: 1.5rem 1rem 1rem;
    }
    
    .hscode-description {
        padding: 1rem 1.5rem;
    }
    
    .hscode-description p {
        font-size: 0.8rem;
        line-height: 1.5;
    }
    
    .search-title {
        font-size: 1.5rem;
    }
    
    .search-form {
        padding: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .search-actions {
        flex-direction: column; /* 移动端：垂直布局，开始查询按钮在上方，重置按钮在下方 */
        align-items: center;
    }
    
    .search-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .result-item {
        padding: 0.875rem 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        min-height: auto;
    }
    
    .result-content {
        flex-direction: column;
        gap: 0.75rem;
        align-items: stretch;
    }
    
    .result-code-section {
        justify-content: space-between;
        align-items: center;
    }
    
    .result-code {
        font-size: 1rem;
        min-width: 90px;
        padding: 0.25rem 0.5rem;
        letter-spacing: 0.6px;
    }
    
    .result-probability {
        font-size: 0.65rem;
        padding: 0.2rem 0.5rem;
    }
    
    .result-info {
        gap: 0.375rem;
    }
    
    .result-name {
        font-size: 0.95rem;
        -webkit-line-clamp: 3;
        line-clamp: 3; /* 标准属性 */
    }
    
    .result-description {
        font-size: 0.8rem;
        -webkit-line-clamp: 2;
        line-clamp: 2; /* 标准属性 */
    }
    
    .result-meta {
        flex-direction: column;
        align-items: stretch;
        gap: 0.375rem;
    }
    
    .result-tax-info {
        justify-content: space-between;
        font-size: 0.65rem;
        padding: 0.25rem 0;
        border-bottom: 1px solid var(--border-light);
    }
    
    .result-tax-info:last-child {
        border-bottom: none;
    }
    
    .tax-rate {
        font-size: 0.6rem;
        padding: 0.1rem 0.3rem;
    }
    
    /* 移动端详情行优化：将相关字段合并为两列显示 */
    .detail-row {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    /* 创建合并行的容器 */
    .detail-row-pair {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    
    .detail-item {
        padding: 0.5rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
        border-radius: var(--radius-sm);
        background: var(--bg-secondary);
        border: 1px solid var(--border-light);
    }
    
    .detail-value {
        text-align: left;
        font-weight: 700;
    }
    
    .result-actions {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .action-btn-small {
        font-size: 0.75rem;
        width: 100px;
        height: 36px;
        gap: 0.25rem;
    }
    
    .pagination {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .pagination-info {
        order: -1;
        width: 100%;
        text-align: center;
        margin: 0 0 1rem 0;
    }
}

@media (max-width: 480px) {
    .search-header {
        padding: 1rem;
    }
    
    .hscode-description {
        padding: 0.75rem 1rem;
    }
    
    .hscode-description p {
        font-size: 0.75rem;
        line-height: 1.4;
    }
    
    .search-title {
        font-size: 1.25rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .search-form {
        padding: 1rem;
    }
    
    .form-input {
        padding: 0.875rem 1rem;
    }
    
    .search-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .result-item {
        padding: 0.75rem;
    }
    
    .result-code {
        font-size: 0.9rem;
        min-width: 80px;
        letter-spacing: 0.4px;
    }
    
    .result-name {
        font-size: 0.9rem;
    }
    
    .result-description {
        font-size: 0.75rem;
    }
    
    .result-tax-info {
        font-size: 0.6rem;
    }
    
    .tax-rate {
        font-size: 0.55rem;
    }
    
    /* 超小屏幕：保持两列布局，但缩小间距和字体 */
    .detail-row-pair {
        gap: 0.375rem;
    }
    
    .detail-item {
        padding: 0.375rem;
    }
    
    .detail-label,
    .detail-value {
        font-size: 0.75rem;
    }
    
    .detail-label {
        margin-bottom: 0.125rem;
    }
    
    .empty-state {
        padding: 2rem 1rem;
    }
    
    .empty-icon {
        width: 60px;
        height: 60px;
    }
    
    .empty-icon i {
        font-size: 1.5rem;
    }
    
    .empty-title {
        font-size: 1.25rem;
    }
}

/* 高性能动画和微交互 */
@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

.result-item.loading {
    background: linear-gradient(
        90deg,
        var(--gray-100) 0px,
        rgba(255, 255, 255, 0.8) 40px,
        var(--gray-100) 80px
    );
    background-size: 600px;
    animation: shimmer 1.5s ease-in-out infinite;
}

/* 增强的焦点状态 */
.result-item:focus-visible {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 4px rgba(74, 156, 1, 0.1);
}

/* 滚动优化 */
.results-list {
    scroll-behavior: smooth;
    overscroll-behavior: contain;
    margin-bottom: 2rem;
}

/* 高级渐变效果 */
.result-item:hover {
    background: 
        linear-gradient(90deg, var(--bg-primary) 0%, rgba(74, 156, 1, 0.02) 50%, var(--bg-primary) 100%),
        radial-gradient(circle at right, rgba(74, 156, 1, 0.03) 0%, transparent 50%);
}

/* 优化的阴影层次 */
.result-item {
    box-shadow: 
        0 1px 3px rgba(42, 47, 58, 0.06),
        0 1px 2px rgba(42, 47, 58, 0.04);
}

.result-item:hover {
    box-shadow: 
        0 4px 20px rgba(74, 156, 1, 0.12),
        0 2px 8px rgba(74, 156, 1, 0.08),
        0 1px 3px rgba(42, 47, 58, 0.06);
}

/* 磨砂玻璃效果增强 */
.result-item {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px) saturate(120%);
    -webkit-backdrop-filter: blur(10px) saturate(120%);
}

[data-theme="dark"] .result-item {
    background: rgba(42, 47, 58, 0.85);
    backdrop-filter: blur(12px) saturate(110%);
    -webkit-backdrop-filter: blur(12px) saturate(110%);
}

/* 文字选择优化 */
.result-name::selection,
.result-description::selection {
    background: rgba(74, 156, 1, 0.2);
    color: var(--primary-green-dark);
}

/* 性能优化 */
.result-item {
    contain: layout style paint;
    will-change: transform, box-shadow;
}

.result-item:hover {
    will-change: auto;
}

/* 无障碍性增强 */
@media (prefers-reduced-motion: reduce) {
    .result-item,
    .result-item::before,
    .result-item::after {
        transition: none !important;
        animation: none !important;
    }
    
    .result-item:hover {
        transform: none !important;
    }
}

/* 高对比度模式适配 */
@media (prefers-contrast: high) {
    .result-item {
        border-width: 2px;
        background: var(--bg-primary);
    }
    
    .result-code {
        background: var(--primary-green);
        color: white;
        border: 2px solid var(--primary-green-dark);
    }
    
    .result-probability {
        background: var(--primary-green-dark);
        border: 1px solid var(--text-primary);
    }
}

/* 键盘导航焦点样式 */
.result-item.keyboard-focused {
    outline: 3px solid var(--primary-green);
    outline-offset: 2px;
    border-color: var(--primary-green);
    box-shadow: 
        0 0 0 6px rgba(74, 156, 1, 0.15),
        0 4px 20px rgba(74, 156, 1, 0.12),
        0 2px 8px rgba(74, 156, 1, 0.08);
    transform: translateX(2px);
}

.result-item.keyboard-focused::before {
    transform: scaleY(1);
}

/* 加载状态增强 */
.results-list.loading .result-item {
    pointer-events: none;
    opacity: 0.7;
}

/* 动画性能优化 */
@media (prefers-reduced-motion: no-preference) {
    .result-item {
        transition: 
            transform 0.2s cubic-bezier(0.4, 0, 0.2, 1),
            box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1),
            border-color 0.15s ease-in-out,
            background 0.15s ease-in-out;
    }
    
    .result-item::before {
        transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .result-item::after {
        transition: 
            opacity 0.15s ease-in-out,
            transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }
}

/* ================================================
   搜索模式切换开关样式
   ================================================ */

.search-mode-toggle {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
    margin-left: auto;
    min-width: 140px; /* 增加宽度以容纳文字 */
}

/* 移动端内联模式 */
.search-mode-toggle.mobile-inline {
    margin-left: 0;
    margin-right: 0;
    min-width: auto;
    flex-direction: row;
    align-items: center;
}

.search-mode-switch {
    display: flex;
    align-items: center;
    justify-content: flex-end; /* 确保右对齐 */
    gap: 0.75rem;
    position: relative;
}

.search-mode-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    display: none; /* 隐藏文字，只在悬停时显示 */
}

/* 搜索模式文字显示 */
.search-mode-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    color: white;
    transition: all 0.3s ease;
}

/* 极速检索模式的文字样式 */
.search-mode-text.fast-mode {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
}

/* 开关样式 */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--primary-green); /* 智能检索：绿色 */
    transition: 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s ease;
    box-shadow: var(--shadow-sm);
}

input:checked + .slider {
    background-color: #3b82f6; /* 极速检索：蓝色 */
}

input:focus + .slider {
    box-shadow: 0 0 0 2px rgba(74, 156, 1, 0.2);
}

input:checked + .slider:focus {
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}

.search-mode-description {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: right;
    line-height: 1.3;
    max-width: 280px;
    display: none; /* 默认隐藏，只在悬停时显示 */
}

/* 悬停时显示提示信息 */
.search-mode-switch:hover .search-mode-description {
    display: block;
}

/* 悬停提示框样式 */
.search-mode-switch::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 1000;
    margin-bottom: 0.5rem;
}

.search-mode-switch::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: rgba(0, 0, 0, 0.8);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 1000;
    margin-bottom: 0.1rem;
}

.search-mode-switch:hover::before,
.search-mode-switch:hover::after {
    opacity: 1;
    visibility: visible;
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 移动端整体容器宽度控制 - 不影响sticky定位 */
    .tools-container, .tools-main, .results-section {
        width: 100%;
        max-width: 100vw;
    }
    
    .results-title-row {
        align-items: flex-start;
        gap: 0.5rem;
        width: 100%;
        overflow: hidden;
    }
    
    .results-title {
        font-size: 1.1rem;
        flex: 1;
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    /* 移动端开关按钮优化 */
    .search-mode-toggle.mobile-inline {
        flex-shrink: 0;
        gap: 0.3rem;
        align-items: center;
        max-width: fit-content;
    }
    
    .search-mode-toggle.mobile-inline .search-mode-switch {
        justify-content: flex-end;
        gap: 0.5rem;
        overflow: hidden;
    }
    
    .search-mode-text {
        font-size: 0.75rem;
        padding: 0.15rem 0.35rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 80px;
    }
    
    /* 开关尺寸优化 */
    .search-mode-toggle.mobile-inline .switch {
        width: 38px;
        height: 20px;
        flex-shrink: 0;
    }
    
    .search-mode-toggle.mobile-inline .slider {
        height: 20px;
    }
    
    .search-mode-toggle.mobile-inline .slider:before {
        height: 16px;
        width: 16px;
        left: 2px;
        bottom: 2px;
    }
    
    .search-mode-toggle.mobile-inline input:checked + .slider:before {
        transform: translateX(18px);
    }
    
    .search-mode-description {
        text-align: left;
        font-size: 0.8rem;
        margin-top: 0.5rem;
        max-width: none;
        overflow: hidden;
        word-wrap: break-word;
    }
    
    /* 移动端结果项防溢出 */
    .result-item {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        padding: 0.75rem 1rem;
        gap: 0.75rem;
    }
    
    .result-code {
        flex-shrink: 0;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .result-info {
        min-width: 0;
        overflow: hidden;
    }
    
    .result-name, .result-description {
        overflow: hidden;
        word-wrap: break-word;
        word-break: break-word;
    }
    
    .result-meta {
        overflow: hidden;
        flex-wrap: wrap;
    }
    
    .tax-rate {
        flex-shrink: 0;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}