/* ============================================
   极端天气专题页样式表
   迪卓依思 · 地理志 (djoyce.com)
   对应文件: meteorology/extreme-weather.html
   ============================================ */

/* --------------------------------------------
   1. Hero 首屏增强
   -------------------------------------------- */
.extreme-hero {
    background: linear-gradient(160deg, #1a0a0a 0%, #3e1c1c 30%, #1a1628 70%, #0d1521 100%);
}

.extreme-hero .column-hero-badge .dot {
    background: #FF6F00;
}

.extreme-hero h1 .highlight {
    background: linear-gradient(135deg, #FF8A65, #FF6F00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --------------------------------------------
   2. 极端天气类型卡片增强
   -------------------------------------------- */
.extreme-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.extreme-card {
    position: relative;
    overflow: hidden;
}

.extreme-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, rgba(0,0,0,0.03), transparent);
    pointer-events: none;
}

.extreme-card .subcategory-icon {
    background: linear-gradient(135deg, #FFF3E0, #FFE0B2);
}

.extreme-stats-row {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-md);
    padding: var(--space-sm) 0;
    border-top: 1px dashed var(--color-border-light);
    border-bottom: 1px dashed var(--color-border-light);
}

.extreme-stat {
    display: flex;
    flex-direction: column;
}

.extreme-stat .num {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1.2;
}

.extreme-stat .lbl {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* 各类型卡片主题色 */
.typhoon-card { border-left: 4px solid #0277BD; }
.typhoon-card .subcategory-icon { background: linear-gradient(135deg, #E3F2FD, #BBDEFB); }

.tornado-card { border-left: 4px solid #5D4037; }
.tornado-card .subcategory-icon { background: linear-gradient(135deg, #EFEBE9, #D7CCC8); }

.heat-card { border-left: 4px solid #E65100; }
.heat-card .subcategory-icon { background: linear-gradient(135deg, #FFF3E0, #FFE0B2); }

.dust-card { border-left: 4px solid #8D6E63; }
.dust-card .subcategory-icon { background: linear-gradient(135deg, #EFEBE9, #D7CCC8); }

/* --------------------------------------------
   3. 专题区域
   -------------------------------------------- */
.topic-section {
    padding: var(--space-4xl) 0;
    background: var(--color-bg);
}

.topic-section.topic-alt {
    background: var(--color-card);
}

.topic-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-3xl);
}

.topic-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.topic-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.topic-desc {
    color: var(--color-text-secondary);
    font-size: 1.0625rem;
    line-height: 1.8;
}

.topic-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.topic-grid.reverse {
    grid-template-columns: 1fr 1.1fr;
}

.topic-content h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-sm);
    color: var(--color-text);
    padding-left: var(--space-md);
    border-left: 3px solid var(--color-secondary);
}

.topic-content h3:first-child {
    margin-top: 0;
}

.topic-content p {
    color: var(--color-text-secondary);
    line-height: 1.9;
    margin-bottom: var(--space-md);
    font-size: 1rem;
}

/* --------------------------------------------
   4. 可视化卡片
   -------------------------------------------- */
.topic-viz {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    position: sticky;
    top: 100px;
}

.viz-card {
    background: var(--color-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    overflow: hidden;
}

.topic-alt .viz-card {
    background: var(--color-bg);
}

.viz-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    margin-bottom: var(--space-md);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.viz-canvas-wrap {
    width: 100%;
    background: #FAFAFA;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

.viz-canvas-wrap svg {
    width: 100%;
    height: auto;
    display: block;
}

.viz-source {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* --------------------------------------------
   5. 等级表格
   -------------------------------------------- */
.grade-table-wrap {
    overflow-x: auto;
}

.grade-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.grade-table thead {
    background: var(--color-sky);
}

.grade-table th {
    padding: 10px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.8125rem;
    border-bottom: 2px solid var(--color-border);
}

.grade-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text-secondary);
    vertical-align: middle;
}

.grade-table tbody tr:hover {
    background: rgba(2, 119, 189, 0.03);
}

.grade-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}

/* EF等级徽章 */
.ef-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
}

.ef0 { background: #81C784; }
.ef1 { background: #AED581; }
.ef2 { background: #FFF176; color: #333; }
.ef3 { background: #FFB74D; color: #333; }
.ef4 { background: #FF7043; }
.ef5 { background: #E53935; }

/* 热浪等级 */
.heat-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
}

.h1 { background: #81C784; }
.h2 { background: #FFF176; color: #333; }
.h3 { background: #FFB74D; color: #333; }
.h4 { background: #E53935; }

/* --------------------------------------------
   6. 数据亮点增强
   -------------------------------------------- */
.data-spotlight-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-xl);
}

.data-card.wide-card {
    grid-column: 1 / -1;
}

.extreme-record-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.record-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}

.record-item:hover {
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.record-flag {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 40px;
    text-align: center;
}

.record-info {
    flex: 1;
}

.record-val {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.2;
}

.record-item.hot .record-val { color: #E65100; }
.record-item.cold .record-val { color: #0277BD; }

.record-loc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.record-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* --------------------------------------------
   7. 灾害评估与预警体系
   -------------------------------------------- */
.warning-system-section {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

.warning-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.warning-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.warning-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
    opacity: 0;
    transition: var(--transition-base);
}

.warning-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.warning-card:hover::before {
    opacity: 1;
}

.warning-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.warning-card h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.warning-card p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 0;
}

/* --------------------------------------------
   8. 时间轴标签增强
   -------------------------------------------- */
.timeline-tag {
    display: inline-block;
    font-size: 0.75rem;
    padding: 3px 12px;
    border-radius: var(--radius-full);
    font-weight: 500;
    margin-top: var(--space-sm);
}

.timeline-tag.tag-typhoon {
    background: #E3F2FD;
    color: #01579B;
}

.timeline-tag.tag-heat {
    background: #FFF3E0;
    color: #E65100;
}

.timeline-tag.tag-rain {
    background: #E8F5E9;
    color: #2E7D32;
}

/* --------------------------------------------
   9. 关联环球足迹（复用主样式，微调）
   -------------------------------------------- */
.related-tracks .section-header h2 {
    color: var(--color-text);
}

/* --------------------------------------------
   10. 响应式适配
   -------------------------------------------- */
@media (max-width: 1023px) {
    .extreme-grid {
        grid-template-columns: 1fr;
    }

    .topic-grid,
    .topic-grid.reverse {
        grid-template-columns: 1fr;
    }

    .topic-viz {
        position: static;
        order: -1;
    }

    .data-spotlight-grid {
        grid-template-columns: 1fr;
    }

    .warning-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .warning-grid {
        grid-template-columns: 1fr;
    }

    .extreme-stats-row {
        gap: var(--space-md);
    }

    .record-item:hover {
        transform: none;
    }
}