/* 历史朝代公元对照页面专用样式 */

/* 查询模式选择器 */
.query-mode-selector {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background-color: var(--surface-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.mode-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    background-color: var(--background-color);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.mode-btn:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

/* 查询区域 */
.query-section {
    display: none;
    margin-bottom: 2rem;
}

.query-section.active {
    display: block;
}

/* 搜索组 */
.search-group {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1rem;
    align-items: end;
}

/* 转换组 */
.conversion-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}

/* 朝代信息样式 */
.dynasty-info {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-top: 1rem;
}

.dynasty-detail {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.dynasty-detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.detail-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.detail-value {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 1rem;
}

.dynasty-description {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    line-height: 1.6;
    color: var(--text-primary);
}

/* 年份信息样式 */
.year-info {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-top: 1rem;
}

.year-result {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.year-display {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.dynasty-display {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 时间线样式 */
.timeline-container {
    margin-top: 1rem;
    position: relative;
    padding-left: 2rem;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -0.5rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    background-color: var(--primary-color);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.timeline-content {
    background-color: var(--surface-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.timeline-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-years {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.timeline-description {
    font-size: 0.875rem;
    color: var(--text-primary);
    line-height: 1.5;
}

/* 朝代表格样式 */
.table-container {
    margin-top: 1rem;
    overflow-x: auto;
}

.dynasty-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.dynasty-table th,
.dynasty-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.dynasty-table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.dynasty-table tr:hover {
    background-color: var(--background-color);
}

.dynasty-table td:first-child {
    font-weight: 600;
    color: var(--primary-color);
}

/* 快速查询样式 */
.quick-query {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.quick-item {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.quick-item:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.quick-name {
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.quick-years {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* 历史知识样式 */
.history-knowledge {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.knowledge-item {
    background-color: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.knowledge-item h5 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
}

.knowledge-item p {
    color: var(--text-primary);
    line-height: 1.6;
    margin: 0;
}

/* 控制按钮组 */
.timeline-controls,
.table-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}

/* 特殊年份显示 */
.special-year {
    background-color: var(--warning-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
}

.ancient-year {
    background-color: var(--error-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
}

.modern-year {
    background-color: var(--success-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .query-mode-selector {
        flex-direction: column;
    }

    .search-group {
        grid-template-columns: 1fr;
    }

    .conversion-group {
        grid-template-columns: 1fr;
    }

    .timeline-controls,
    .table-controls {
        grid-template-columns: 1fr;
    }

    .quick-query {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .history-knowledge {
        grid-template-columns: 1fr;
    }

    .dynasty-table {
        font-size: 0.875rem;
    }

    .dynasty-table th,
    .dynasty-table td {
        padding: 0.5rem;
    }

    .timeline-container {
        padding-left: 1rem;
    }

    .timeline-container::before {
        left: 0.5rem;
    }

    .timeline-item {
        padding-left: 1rem;
    }

    .timeline-item::before {
        left: -0.25rem;
        width: 0.75rem;
        height: 0.75rem;
    }
}

@media (max-width: 480px) {
    .mode-btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }

    .quick-query {
        grid-template-columns: 1fr;
    }

    .dynasty-detail {
        grid-template-columns: 1fr;
    }

    .year-result {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .timeline-content {
        padding: 0.75rem;
    }
}