/* ============================================
   大气环流栏目页样式表
   迪卓依思 · 地理志 (djoyce.com)
   对应文件: meteorology/index.html
   ============================================ */

/* --------------------------------------------
   1. Hero 首屏区域
   -------------------------------------------- */
.column-hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #0a1628 0%, #1a3a5c 40%, #0d2137 100%);
    padding-top: 72px;
}

.column-hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.column-hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: var(--space-4xl) var(--space-lg);
    color: white;
}

.column-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    margin-bottom: var(--space-xl);
    letter-spacing: 0.05em;
}

.column-hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--color-secondary-light);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.column-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin-bottom: var(--space-md);
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.column-hero h1 .highlight {
    background: linear-gradient(135deg, #4FC3F7, #29B6F6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.column-hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    max-width: 640px;
    margin: 0 auto var(--space-xl);
}

.column-hero-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.6);
}

.column-hero-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* --------------------------------------------
   2. 栏目概述区域
   -------------------------------------------- */
.column-overview {
    background: var(--color-bg);
    padding: var(--space-4xl) 0;
}

.overview-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

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

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

.overview-text .lead {
    font-size: 1.125rem;
    color: var(--color-text);
    font-weight: 500;
}

/* 右侧信息卡片 */
.overview-info-box {
    background: var(--color-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    position: sticky;
    top: 100px;
}

.info-box-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 0.9375rem;
}

.info-item:last-child {
    border-bottom: none;
}

.info-item .label {
    color: var(--color-text-secondary);
}

.info-item .value {
    color: var(--color-text);
    font-weight: 600;
}

/* 关联栏目 */
.related-columns {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
}

.related-columns h4 {
    font-size: 0.9375rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.related-columns a {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    margin: 4px 4px 4px 0;
    transition: var(--transition-fast);
}

.related-columns a:hover {
    background: var(--color-secondary);
    color: white;
}

/* --------------------------------------------
   3. 子分类卡片区域
   -------------------------------------------- */
.subcategory-section {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

.subcategory-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.subcategory-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;
}

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

.subcategory-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.subcategory-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
}

.subcategory-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

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

.subcategory-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.article-count {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.subcategory-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.subcategory-tags span {
    font-size: 0.75rem;
    padding: 3px 10px;
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    border-radius: var(--radius-full);
}

.subcategory-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.9375rem;
    margin-top: var(--space-sm);
    transition: gap 0.2s ease;
}

.subcategory-link:hover {
    gap: 8px;
}

/* --------------------------------------------
   4. 数据亮点区域
   -------------------------------------------- */
.data-spotlight {
    background: var(--color-bg);
    padding: var(--space-4xl) 0;
}

.data-spotlight-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

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

.data-card h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.data-card .data-source {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}

.climate-map-container {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #E3F2FD;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.chart-container {
    width: 100%;
    aspect-ratio: 16 / 7;
    position: relative;
}

.chart-container canvas {
    width: 100%;
    height: 100%;
}

/* --------------------------------------------
   5. 时间轴区域
   -------------------------------------------- */
.timeline-section {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

.timeline-wrapper {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-secondary), var(--color-secondary-light));
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.timeline-content {
    flex: 1;
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    max-width: calc(50% - var(--space-xl));
}

.timeline-content .year {
    font-size: 0.8125rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.timeline-content h4 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

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

.timeline-tag {
    display: inline-block;
    font-size: 0.75rem;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    background: #FFF3E0;
    color: var(--color-accent);
    font-weight: 500;
    margin-top: var(--space-sm);
}

/* --------------------------------------------
   6. 精选文章区域
   -------------------------------------------- */
.featured-articles {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

.featured-articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

/* --------------------------------------------
   7. 关联环球足迹区域
   -------------------------------------------- */
.related-tracks {
    background: var(--color-bg);
    padding: var(--space-4xl) 0;
}

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

.related-track-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}

.related-track-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.related-track-card .track-img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    background: linear-gradient(135deg, var(--color-sky), var(--color-border-light));
}

.related-track-card .track-body {
    padding: var(--space-md);
}

.related-track-card .track-region {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.related-track-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-text);
}

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

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

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

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

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

    .overview-info-box {
        position: static;
    }

    /* 时间轴移动端调整 */
    .timeline-line {
        left: 24px;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        flex-direction: row;
    }

    .timeline-content {
        max-width: none;
        margin-left: var(--space-md);
    }
}

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

    .featured-articles-grid {
        grid-template-columns: 1fr;
    }

    .related-tracks-grid {
        grid-template-columns: 1fr;
    }

    .column-hero-meta {
        gap: var(--space-md);
    }

    .timeline-line {
        left: 20px;
    }

    .timeline-dot {
        width: 40px;
        height: 40px;
        font-size: 0.75rem;
    }
}