/* ============================================
   climate-change.css — 气候变化页面专用样式
   迪卓依思 · 地理志 (djoyce.com)
   对应文件: meteorology/climate-change.html
   ============================================ */

/* --------------------------------------------
   1. Hero 区域定制
   -------------------------------------------- */
.climate-hero {
    background: linear-gradient(160deg, #1a0a0a 0%, #3e1c1c 30%, #0d2137 70%, #0a1628 100%);
}

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

/* --------------------------------------------
   2. 核心数据指标
   -------------------------------------------- */
.climate-stats {
    background: linear-gradient(135deg, #1a0a0a, #2d1b1b);
    padding: var(--space-3xl) 0;
    position: relative;
    overflow: hidden;
}

.climate-stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(255,111,0,0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(2,119,189,0.06) 0%, transparent 60%);
    pointer-events: none;
}

.climate-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    position: relative;
    z-index: 1;
}

.climate-stat-item {
    text-align: center;
    padding: var(--space-xl);
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-xl);
    transition: var(--transition-base);
}

.climate-stat-item:hover {
    background: rgba(255,255,255,0.06);
    transform: translateY(-4px);
    border-color: rgba(255,111,0,0.2);
}

.climate-stat-number {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, #FF8A65, #FF6F00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.climate-stat-unit {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.5);
    font-weight: 600;
    margin-top: 4px;
}

.climate-stat-label {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
    margin-top: var(--space-sm);
    line-height: 1.6;
}

.climate-stat-label small {
    color: rgba(255,255,255,0.4);
    font-size: 0.75rem;
}

/* --------------------------------------------
   3. 温室效应区域
   -------------------------------------------- */
.greenhouse-section {
    background: var(--color-bg);
    padding: var(--space-4xl) 0;
}

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

.greenhouse-diagram {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.greenhouse-diagram svg {
    width: 100%;
    height: auto;
    display: block;
}

.greenhouse-explanation h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

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

.ghg-table-wrap {
    overflow-x: auto;
    margin-top: var(--space-lg);
}

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

.ghg-table th,
.ghg-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

.ghg-table th {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    font-weight: 600;
    font-size: 0.8125rem;
}

.ghg-table td {
    color: var(--color-text-secondary);
}

.ghg-table tr:hover td {
    background: rgba(227,242,253,0.3);
}

/* --------------------------------------------
   4. CO2区域
   -------------------------------------------- */
.co2-section {
    background: var(--color-card);
}

/* --------------------------------------------
   5. 碳循环区域
   -------------------------------------------- */
.carbon-cycle-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, #f0f7f0 100%);
    padding: var(--space-4xl) 0;
}

.carbon-cycle-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.carbon-diagram {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.carbon-diagram svg {
    width: 100%;
    height: auto;
    display: block;
}

.carbon-explanation h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

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

.carbon-budget-box {
    background: linear-gradient(135deg, #FFF3E0, #FFE0B2);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-lg);
    border-left: 4px solid var(--color-accent);
}

.carbon-budget-box h4 {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.carbon-budget-box p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

.budget-bar {
    width: 100%;
    height: 12px;
    background: rgba(255,111,0,0.15);
    border-radius: var(--radius-full);
    margin: var(--space-sm) 0;
    overflow: hidden;
}

.budget-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    border-radius: var(--radius-full);
    transition: width 1.5s ease;
}

/* --------------------------------------------
   6. IPCC AR6 区域
   -------------------------------------------- */
.ipcc-section {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

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

.ipcc-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;
}

.ipcc-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    opacity: 0;
    transition: var(--transition-base);
}

.ipcc-card.wg1::before { background: linear-gradient(90deg, #0277BD, #29B6F6); }
.ipcc-card.wg2::before { background: linear-gradient(90deg, #2E7D32, #4CAF50); }
.ipcc-card.wg3::before { background: linear-gradient(90deg, #FF6F00, #FF9800); }

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

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

.ipcc-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.wg-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.wg1 .wg-badge { background: linear-gradient(135deg, #0277BD, #29B6F6); }
.wg2 .wg-badge { background: linear-gradient(135deg, #2E7D32, #4CAF50); }
.wg3 .wg-badge { background: linear-gradient(135deg, #FF6F00, #FF9800); }

.ipcc-card-header h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    color: var(--color-text);
    flex: 1;
}

.wg-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: var(--color-border-light);
    padding: 2px 10px;
    border-radius: var(--radius-full);
}

.ipcc-findings {
    list-style: none;
    padding: 0;
}

.ipcc-findings li {
    position: relative;
    padding-left: 20px;
    margin-bottom: var(--space-sm);
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.ipcc-findings li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.wg1 .ipcc-findings li::before { background: #0277BD; }
.wg2 .ipcc-findings li::before { background: #2E7D32; }
.wg3 .ipcc-findings li::before { background: #FF6F00; }

.ipcc-synthesis {
    display: flex;
    gap: var(--space-xl);
    background: linear-gradient(135deg, #0d2137, #1a3a5c);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    color: white;
    align-items: flex-start;
}

.synthesis-icon {
    font-size: 3rem;
    flex-shrink: 0;
    opacity: 0.9;
}

.synthesis-content h3 {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    margin-bottom: var(--space-sm);
}

.synthesis-content p {
    color: rgba(255,255,255,0.75);
    line-height: 1.8;
    margin-bottom: var(--space-sm);
    font-size: 1rem;
}

.synthesis-content p:last-child {
    margin-bottom: 0;
}

/* --------------------------------------------
   7. SSP情景区域
   -------------------------------------------- */
.ssp-section {
    background: var(--color-bg);
}

.ssp-cards {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-2xl);
}

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

.ssp-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    transition: var(--transition-base);
}

.ssp-19::before { background: linear-gradient(90deg, #2E7D32, #4CAF50); }
.ssp-26::before { background: linear-gradient(90deg, #66BB6A, #81C784); }
.ssp-45::before { background: linear-gradient(90deg, #FFB74D, #FFCC80); }
.ssp-70::before { background: linear-gradient(90deg, #FF8A65, #FFAB91); }
.ssp-85::before { background: linear-gradient(90deg, #E53935, #EF5350); }

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

.ssp-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.ssp-tag {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    background: var(--color-border-light);
    color: var(--color-text-secondary);
}

.ssp-temp {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.ssp-19 .ssp-temp { color: #2E7D32; }
.ssp-26 .ssp-temp { color: #66BB6A; }
.ssp-45 .ssp-temp { color: #FF9800; }
.ssp-70 .ssp-temp { color: #FF6F00; }
.ssp-85 .ssp-temp { color: #E53935; }

.ssp-card h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.ssp-card p {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}

/* --------------------------------------------
   8. 极端天气区域
   -------------------------------------------- */
.extreme-events-section {
    background: linear-gradient(180deg, var(--color-card) 0%, var(--color-bg) 100%);
    padding: var(--space-4xl) 0;
}

.extreme-events-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

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

.extreme-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    opacity: 0;
    transition: var(--transition-base);
}

.extreme-card.heat::before { background: linear-gradient(90deg, #E53935, #FF6F00); }
.extreme-card.rain::before { background: linear-gradient(90deg, #0277BD, #29B6F6); }
.extreme-card.drought::before { background: linear-gradient(90deg, #8D6E63, #BCAAA4); }
.extreme-card.cyclone::before { background: linear-gradient(90deg, #7B1FA2, #AB47BC); }

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

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

.extreme-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

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

.extreme-stat {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 12px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
    background: var(--color-sky);
    color: var(--color-secondary-dark);
}

.extreme-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.extreme-detail {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}

.extreme-detail span {
    font-size: 0.6875rem;
    padding: 3px 10px;
    background: var(--color-border-light);
    color: var(--color-text-muted);
    border-radius: var(--radius-full);
}

.attribution-box {
    background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border-left: 4px solid var(--color-secondary);
}

.attribution-box h4 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    color: var(--color-secondary-dark);
    margin-bottom: var(--space-sm);
}

.attribution-box p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 0;
}

/* --------------------------------------------
   9. 应对策略区域
   -------------------------------------------- */
.solutions-section {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

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

.solution-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;
}

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

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

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

.solution-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, #E8F5E9, #C8E6C9);
}

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

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

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

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

/* --------------------------------------------
   10. 图表容器扩展
   -------------------------------------------- */
.data-spotlight-grid.full-width {
    grid-template-columns: 1fr;
}

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

.chart-container.large {
    aspect-ratio: 21 / 9;
}

/* --------------------------------------------
   11. 响应式适配
   -------------------------------------------- */
@media (max-width: 1023px) {
    .climate-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .greenhouse-grid,
    .carbon-cycle-grid {
        grid-template-columns: 1fr;
    }

    .ipcc-grid {
        grid-template-columns: 1fr;
    }

    .ssp-cards {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

    .ipcc-synthesis {
        flex-direction: column;
        text-align: center;
    }
}

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

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

    .extreme-events-grid {
        grid-template-columns: 1fr;
    }

    .solutions-grid {
        grid-template-columns: 1fr;
    }

    .chart-container.large {
        aspect-ratio: 16 / 10;
    }

    .ghg-table {
        font-size: 0.75rem;
    }

    .ghg-table th,
    .ghg-table td {
        padding: 8px 10px;
    }
}

@media (max-width: 479px) {
    .ssp-cards {
        grid-template-columns: 1fr;
    }

    .climate-stat-number {
        font-size: 2.5rem;
    }
}