/* Search 页面样式 */

.search-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2rem;
}

/* 搜索模式选择 */
.search-modes {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.mode-tabs {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-white);
    padding: 0.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.mode-tab {
    background: transparent;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-gray);
    transition: all 0.2s;
}

.mode-tab:hover {
    background: var(--bg-light);
}

.mode-tab.active {
    background: var(--primary-color);
    color: white;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
}

.download-btn svg {
    width: 20px;
    height: 20px;
}

/* 元素周期表区域 */
.periodic-table-section {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.periodic-table-section h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.periodic-intro {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
}

.selected-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-gray);
}

.selected-elements {
    font-weight: 600;
    color: var(--text-dark);
}

.search-materials-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    margin-bottom: 1.5rem;
    transition: background-color 0.2s;
}

.search-materials-btn:hover:not(:disabled) {
    background: var(--primary-dark);
}

.search-materials-btn:disabled {
    background: var(--text-gray);
    cursor: not-allowed;
}

/* 元素周期表 */
.periodic-table {
    display: grid;
    grid-template-columns: repeat(18, 1fr);
    gap: 4px;
    margin-bottom: 1.5rem;
    overflow-x: auto;
}

.element {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    min-width: 40px;
    min-height: 40px;
}

.element:hover {
    transform: scale(1.1);
    z-index: 10;
    box-shadow: var(--shadow-md);
}

.element.has-data {
    background: #22c55e;
    color: white;
    border-color: #16a34a;
}

.element.has-data:hover {
    background: #16a34a;
}

.element.selected {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-dark);
}

.element.selected.has-data {
    background: var(--primary-color);
}

.element-symbol {
    font-weight: 700;
    font-size: 1rem;
}

.element-number {
    font-size: 0.6rem;
    opacity: 0.8;
}

.element-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-dark);
    color: white;
    padding: 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    margin-bottom: 0.5rem;
}

.element:hover .element-tooltip {
    opacity: 1;
}

/* 空白元素（占位） */
.element.empty {
    background: transparent;
    border: none;
    cursor: default;
}

.element.empty:hover {
    transform: none;
    box-shadow: none;
}

/* 图例 */
.element-legend {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* 搜索结果区域 */
.results-section {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: var(--shadow-md);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.results-header h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
}

.results-count {
    color: var(--text-gray);
}

/* 过滤器面板 */
.filters-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 8px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.875rem;
}

.filter-input {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.filter-input svg {
    width: 18px;
    height: 18px;
    color: var(--text-gray);
    position: absolute;
    left: 0.75rem;
}

.filter-input input {
    flex: 1;
    padding: 0.6rem 0.75rem 0.6rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
}

.filter-input input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.clear-btn {
    background: var(--text-gray);
    color: white;
    border: none;
    padding: 0.4rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    cursor: pointer;
}

.clear-btn:hover {
    background: var(--text-dark);
}

.crystal-select {
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    background: white;
    cursor: pointer;
}

.range-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.range-inputs input {
    flex: 1;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    width: 80px;
}

/* 结果表格 */
.results-table-wrapper {
    overflow-x: auto;
}

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

.results-table thead {
    background: var(--bg-light);
}

.results-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
    border-bottom: 2px solid var(--border-color);
}

.results-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.results-table tbody tr {
    transition: background-color 0.2s;
}

.results-table tbody tr:hover {
    background: var(--bg-light);
}

.material-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
}

.material-link:hover {
    text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
    .periodic-table {
        font-size: 0.75rem;
    }

    .element {
        min-width: 30px;
        min-height: 30px;
    }

    .filters-panel {
        grid-template-columns: 1fr;
    }
}