/* ============================================
   dome.css — 火山穹丘专题页专属样式
   ============================================ */

/* ---- Hero ---- */
.dome-hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(160deg, #1a0a0a 0%, #2d1f1f 40%, #3e2723 100%);
    padding-top: 72px;
}
.dome-hero-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
}
.dome-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 var(--space-lg);
}
.dome-hero-content h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.dome-hero-content 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;
}

/* ---- Section Canvas ---- */
.dome-section-canvas {
    width: 100%;
    height: 420px;
    background: transparent;
    border-radius: var(--radius-xl);
}

/* ---- Mechanism Grid ---- */
.mechanism-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}
.mechanism-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}
.mechanism-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);
}
.mechanism-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.mechanism-card:hover::before { opacity: 1; }
.mechanism-step-num {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-border);
    line-height: 1;
}
.mechanism-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, #FFEBEE, #FFCDD2);
}
.mechanism-card:nth-child(2) .mechanism-icon { background: linear-gradient(135deg, #FFF3E0, #FFE0B2); }
.mechanism-card:nth-child(3) .mechanism-icon { background: linear-gradient(135deg, #E3F2FD, #BBDEFB); }
.mechanism-card:nth-child(4) .mechanism-icon { background: linear-gradient(135deg, #E8F5E9, #C8E6C9); }
.mechanism-card h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}
.mechanism-card p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}
.mechanism-detail {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}
.detail-tag {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

/* ---- Growth Chart ---- */
.dome-growth-wrap {
    width: 100%;
    height: 380px;
    position: relative;
}
.dome-growth-wrap canvas {
    width: 100%; height: 100%;
    display: block;
}
.growth-legend {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-top: var(--space-md);
    flex-wrap: wrap;
}
.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}
.legend-dot {
    width: 14px; height: 14px;
    border-radius: 50%;
    display: inline-block;
}
.chart-note {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: var(--space-md);
    text-align: center;
}

/* ---- Dome Type Grid ---- */
.dome-type-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}
.dome-type-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
}
.dome-type-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.dome-type-visual {
    width: 100%;
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, #1a1a2e, #2d1f1f);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.dome-type-visual .dome-svg {
    width: 100%; height: 100%;
}
.dome-type-content {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}
.dome-type-badge {
    display: inline-block;
    padding: 3px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    align-self: flex-start;
}
.dome-type-content h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}
.dome-type-content p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
    flex: 1;
}
.dome-type-features {
    list-style: none;
    padding: 0;
    margin: 0;
}
.dome-type-features li {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    padding: var(--space-xs) 0;
    padding-left: 1.25rem;
    position: relative;
}
.dome-type-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

/* ---- Case Grid ---- */
.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}
.case-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}
.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.case-visual {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--color-sky), var(--color-border-light));
    overflow: hidden;
}
.case-visual svg {
    width: 100%; height: 100%;
    display: block;
}
.case-info {
    padding: var(--space-xl);
}
.case-meta {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}
.case-year {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}
.case-vei {
    background: #FFEBEE;
    color: #C62828;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}
.case-info h4 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}
.case-location {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}
.case-info p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}
.case-stats {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}
.case-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ---- Monitor Grid ---- */
.monitor-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}
.monitor-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}
.monitor-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border);
}
.monitor-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);
}
.monitor-card:nth-child(2) .monitor-icon { background: linear-gradient(135deg, #E8F5E9, #C8E6C9); }
.monitor-card:nth-child(3) .monitor-icon { background: linear-gradient(135deg, #FFEBEE, #FFCDD2); }
.monitor-card:nth-child(4) .monitor-icon { background: linear-gradient(135deg, #FFF3E0, #FFE0B2); }
.monitor-card:nth-child(5) .monitor-icon { background: linear-gradient(135deg, #F3E5F5, #E1BEE7); }
.monitor-card:nth-child(6) .monitor-icon { background: linear-gradient(135deg, #ECEFF1, #CFD8DC); }
.monitor-card h3 {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}
.monitor-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}
.monitor-specs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}
.spec {
    background: var(--color-bg);
    color: var(--color-text-secondary);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--color-border-light);
}

/* ---- Monitor Timeline ---- */
.monitor-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
}
.monitor-timeline::before {
    content: '';
    position: absolute;
    left: 90px;
    top: 20px;
    bottom: 20px;
    width: 2px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
}
.timeline-row {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    padding: var(--space-md) 0;
    position: relative;
}
.timeline-date {
    width: 80px;
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    text-align: right;
    padding-top: 4px;
}
.timeline-dot {
    width: 16px; height: 16px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 4px;
    position: relative;
    z-index: 2;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
}
.timeline-event {
    flex: 1;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--color-border-light);
}
.timeline-event strong {
    display: block;
    font-family: var(--font-heading);
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    font-size: 1rem;
}
.timeline-event span {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ---- Collapse Visualization ---- */
.collapse-viz-wrap {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
}
.collapse-canvas {
    width: 100%;
    height: 420px;
    display: block;
    background: linear-gradient(180deg, #1a1a2e 0%, #2d1f1f 50%, #3e2723 100%);
}
.collapse-controls {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
    flex-wrap: wrap;
}
.collapse-btn {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: var(--transition-fast);
}
.collapse-btn:hover {
    background: var(--color-border-light);
    color: var(--color-text);
}
.collapse-btn.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    border-color: transparent;
}
.collapse-desc {
    padding: 0 var(--space-2xl) var(--space-xl);
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}
.collapse-desc strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}
.collapse-desc p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 0;
}

/* ---- Responsive ---- */
@media (max-width: 1023px) {
    .mechanism-grid { grid-template-columns: repeat(2, 1fr); }
    .dome-type-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: 1fr; }
    .monitor-grid { grid-template-columns: repeat(2, 1fr); }
    .dome-section-canvas { height: 340px; }
    .dome-growth-wrap { height: 320px; }
    .collapse-canvas { height: 340px; }
    .monitor-timeline::before { left: 80px; }
    .timeline-date { width: 70px; }
}

@media (max-width: 767px) {
    .mechanism-grid { grid-template-columns: 1fr; }
    .monitor-grid { grid-template-columns: 1fr; }
    .dome-section-canvas { height: 280px; }
    .dome-growth-wrap { height: 260px; }
    .collapse-canvas { height: 280px; }
    .collapse-controls { flex-direction: column; align-items: center; }
    .collapse-btn { width: 100%; max-width: 280px; text-align: center; }
    .growth-legend { flex-direction: column; align-items: center; gap: var(--space-sm); }
    .monitor-timeline::before { display: none; }
    .timeline-row { flex-direction: column; gap: var(--space-sm); }
    .timeline-date { text-align: left; width: auto; }
    .timeline-dot { display: none; }
}