/* ============================================
   temp-anomaly.css — 全球平均气温距平专题页
   ============================================ */

/* ---- Page Hero ---- */
.temp-hero {
    min-height: 65vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #0a1628 0%, #1a3a5c 40%, #0d2137 100%);
    padding-top: 72px;
}

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

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

.temp-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;
}

.temp-hero-badge .dot {
    width: 8px; height: 8px;
    background: #FF7043;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.temp-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.temp-hero-title .highlight {
    background: linear-gradient(135deg, #FF7043, #FFCA28);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.temp-hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255,255,255,0.75);
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.temp-hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    flex-wrap: wrap;
}

.th-stat {
    text-align: center;
}

.th-stat-num {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    background: linear-gradient(135deg, #FF7043, #FFCA28);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.th-stat-label {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.6);
    margin-top: var(--space-sm);
    letter-spacing: 0.05em;
}

/* ---- Chart Section ---- */
.chart-section {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

.chart-container {
    background: linear-gradient(135deg, #0d1b2a, #1b2838);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid rgba(255,255,255,0.08);
    position: relative;
    overflow: hidden;
}

.chart-main-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    min-height: 400px;
}

.chart-main-wrap canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.chart-tooltip {
    position: absolute;
    background: rgba(10, 22, 40, 0.95);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    color: white;
    font-size: 0.8125rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s ease;
    z-index: 10;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
    white-space: nowrap;
}

.chart-tooltip.visible {
    opacity: 1;
}

.chart-tooltip .tt-year {
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 2px;
}

.chart-tooltip .tt-value {
    font-family: var(--font-mono);
}

.chart-tooltip .tt-value.positive {
    color: #FF7043;
}

.chart-tooltip .tt-value.negative {
    color: #42A5F5;
}

.chart-legend-bar {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.chart-legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: rgba(255,255,255,0.7);
}

.chart-legend-color {
    width: 24px;
    height: 3px;
    border-radius: 2px;
}

.chart-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.chart-caption {
    text-align: center;
    margin-top: var(--space-md);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ---- Data Cards ---- */
.data-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
}

.data-card {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    text-align: center;
    transition: var(--transition-base);
}

.data-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: transparent;
}

.data-card-icon {
    width: 56px; height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin: 0 auto var(--space-md);
}

.data-card:nth-child(1) .data-card-icon { background: linear-gradient(135deg, #FFEBEE, #FFCDD2); }
.data-card:nth-child(2) .data-card-icon { background: linear-gradient(135deg, #FFF3E0, #FFE0B2); }
.data-card:nth-child(3) .data-card-icon { background: linear-gradient(135deg, #E3F2FD, #BBDEFB); }
.data-card:nth-child(4) .data-card-icon { background: linear-gradient(135deg, #E8F5E9, #C8E6C9); }

.data-card-value {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-text);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.data-card-value.warm {
    color: #E53935;
}

.data-card-value.cool {
    color: #1E88E5;
}

.data-card-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* ---- Decade Comparison ---- */
.decade-section {
    background: var(--color-bg);
    padding: var(--space-4xl) 0;
}

.decade-chart-wrap {
    background: linear-gradient(135deg, #0d1b2a, #1b2838);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid rgba(255,255,255,0.08);
    position: relative;
}

.decade-chart-wrap canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* ---- Timeline Section ---- */
.timeline-section {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

.timeline-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #FF7043, #42A5F5);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    position: relative;
}

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

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

.timeline-content {
    flex: 1;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition-base);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.timeline-dot {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #FF7043, #FFCA28);
    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-dot.cool {
    background: linear-gradient(135deg, #42A5F5, #1E88E5);
}

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

.timeline-content p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-sm);
    line-height: 1.8;
}

.timeline-meta {
    font-size: 0.8125rem;
    color: var(--color-primary);
    font-weight: 600;
}

/* ---- Science Section ---- */
.science-section {
    background: var(--color-bg);
    padding: var(--space-4xl) 0;
}

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

.science-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}

.science-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.science-card-icon {
    width: 56px; height: 56px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-sky), var(--color-sky-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: var(--space-lg);
}

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

.science-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 0;
}

/* ---- Source Section ---- */
.source-section {
    background: var(--color-card);
    padding: var(--space-4xl) 0;
}

.source-box {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    border: 1px solid var(--color-border-light);
}

.source-box h3 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.source-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.source-item {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
}

.source-item .si-num {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.source-item .si-content h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.source-item .si-content p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 0;
    line-height: 1.7;
}

.citation-box {
    margin-top: var(--space-2xl);
    padding: var(--space-xl);
    background: linear-gradient(135deg, #E8F5E9, #E3F2FD);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

.citation-box p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 0;
    font-style: italic;
}

/* ---- Method Note ---- */
.method-note {
    background: #FFF8E1;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-top: var(--space-xl);
    border-left: 4px solid #FFB300;
}

.method-note h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    margin-bottom: var(--space-sm);
    color: #E65100;
}

.method-note p {
    font-size: 0.875rem;
    color: #5D4037;
    margin-bottom: var(--space-sm);
    line-height: 1.7;
}

.method-note p:last-child {
    margin-bottom: 0;
}

/* ---- Breadcrumb ---- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--color-secondary);
}

.breadcrumb .sep {
    color: var(--color-text-muted);
}

.breadcrumb .current {
    color: var(--color-text);
    font-weight: 500;
}

/* ---- Section Title Override ---- */
.section-title-alt {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title-alt h2 {
    font-family: var(--font-heading);
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.section-title-alt p {
    color: var(--color-text-secondary);
    font-size: 1.0625rem;
    max-width: 640px;
    margin: 0 auto;
}

/* ---- Responsive ---- */
@media (max-width: 1023px) {
    .data-cards-grid { grid-template-columns: repeat(2, 1fr); }
    .science-grid { grid-template-columns: 1fr; }
    .source-list { grid-template-columns: 1fr; }
    .timeline-line { left: 24px; }
    .timeline-item,
    .timeline-item:nth-child(even) { flex-direction: row; }
    .timeline-content { margin-left: var(--space-md); }
    .chart-main-wrap { aspect-ratio: 16/10; min-height: 350px; }
}

@media (max-width: 767px) {
    .data-cards-grid { grid-template-columns: 1fr; }
    .temp-hero-stats { gap: var(--space-xl); }
    .th-stat-num { font-size: 1.75rem; }
    .chart-main-wrap { aspect-ratio: 4/3; min-height: 300px; }
    .chart-legend-bar { gap: var(--space-md); }
}

@media (max-width: 479px) {
    .timeline-dot { width: 36px; height: 36px; font-size: 0.75rem; }
    .timeline-content { padding: var(--space-lg); }
    .chart-main-wrap { min-height: 260px; }
}