/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    padding: 30px;
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    color: #333;
    font-size: 2.5em;
    margin-bottom: 10px;
}

.header p {
    color: #666;
    font-size: 1.1em;
}

/* 标签页样式 */
.tabs {
    display: flex;
    border-bottom: 2px solid #eee;
    margin-bottom: 20px;
}

.tab {
    padding: 12px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    color: #666;
    border: none;
    background: none;
    transition: all 0.3s;
}

.tab:hover {
    color: #667eea;
}

.tab.active {
    color: #667eea;
    border-bottom: 3px solid #667eea;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 搜索区域 */
.search-area {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 300px;
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: #667eea;
}

.textarea-input {
    width: 100%;
    min-height: 100px;
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    resize: vertical;
    margin-bottom: 15px;
}

.textarea-input:focus {
    outline: none;
    border-color: #667eea;
}

/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

.btn-warning {
    background: #ffc107;
    color: #212529;
}

.btn-warning:hover {
    background: #e0a800;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
    margin-top: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: bold;
    position: sticky;
    top: 0;
}

tr:hover {
    background: #f8f9fa;
}

tr:nth-child(even) {
    background: #f2f2f2;
}

tr:nth-child(even):hover {
    background: #e9ecef;
}

/* 状态提示 */
.status-text {
    padding: 10px 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-weight: bold;
}

.status-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.status-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.status-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* 属性面板 */
.properties-panel {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-left: 4px solid #667eea;
}

.properties-panel h3 {
    color: #333;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #667eea;
}

.properties-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 15px;
}

.property-item {
    background: white;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid #e9ecef;
}

.property-label {
    font-weight: bold;
    color: #666;
    font-size: 0.9em;
    margin-bottom: 5px;
}

.property-value {
    color: #333;
    word-break: break-all;
}

/* iChemistry 化学性质样式 */
.ichemistry-property-item {
    display: flex;
    align-items: flex-start;
    padding: 12px 15px;
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.2s;
}

.ichemistry-property-item:hover {
    background-color: #f8f9fa;
}

.ichemistry-property-item:last-of-type {
    border-bottom: none;
}

.ichemistry-property-icon {
    font-size: 24px;
    margin-right: 15px;
    min-width: 35px;
    text-align: center;
}

.ichemistry-property-info {
    flex: 1;
}

.ichemistry-property-label {
    font-size: 12px;
    color: #888;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ichemistry-property-value {
    font-size: 15px;
    color: #333;
    line-height: 1.5;
    word-break: break-all;
}

.ichemistry-property-link {
    text-align: center;
    padding: 15px;
    margin-top: 10px;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    border-radius: 8px;
}

.ichemistry-property-link a {
    color: #1a73e8;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

.ichemistry-property-link a:hover {
    color: #1557b0;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header h1 {
        font-size: 2em;
    }
    
    .search-area {
        flex-direction: column;
    }
    
    .search-input {
        min-width: 100%;
    }
    
    .tabs {
        flex-wrap: wrap;
    }
    
    .tab {
        padding: 10px 15px;
        font-size: 14px;
    }
    
    .properties-grid {
        grid-template-columns: 1fr;
    }
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}