/* ============================================
   atlas.css — 地理图志页面专用样式
   ============================================ */

/* ---- Atlas Hero ---- */
.atlas-hero {
    min-height: 70vh;
    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;
}

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

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

.atlas-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.atlas-hero-title .highlight {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.atlas-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: 640px;
    margin-left: auto;
    margin-right: auto;
}

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

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

.ah-stat-num {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    background: linear-gradient(135deg, #fff, rgba(255,255,255,0.7));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

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

/* ---- Filter Bar ---- */
.filter-bar {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.filter-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-card);
    border: 1px solid var(--color-border);
    transition: var(--transition-fast);
    cursor: pointer;
}

.filter-btn:hover {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    border-color: var(--color-secondary-light);
}

.filter-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(46,125,50,0.25);
}

/* ---- Gallery Grid ---- */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.gallery-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;
}

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

.gallery-card.hidden {
    display: none;
}

.gallery-canvas-wrap {
    width: 100%;
    aspect-ratio: 3/2;
    background: linear-gradient(135deg, #0a1628, #1a3a5c);
    position: relative;
    overflow: hidden;
}

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

.gallery-info {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.gallery-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.gallery-tag {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

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

.gallery-info h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
    color: var(--color-text);
}

.gallery-info p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    flex: 1;
}

.gallery-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

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

.gallery-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    transition: gap var(--transition-fast);
}

.gallery-link:hover {
    gap: 8px;
    color: var(--color-secondary-dark);
}

/* ---- Tools Section ---- */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.tool-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);
}

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

.tool-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);
}

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

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

.tool-body {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.tool-input-group {
    margin-bottom: var(--space-md);
}

.tool-input-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.tool-input-group input,
.tool-input-group select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-family: var(--font-body);
    background: var(--color-card);
    color: var(--color-text);
    transition: var(--transition-fast);
}

.tool-input-group input:focus,
.tool-input-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(46,125,50,0.1);
}

.tool-input-row {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.tool-result {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: linear-gradient(135deg, #E8F5E9, #E3F2FD);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
}

.result-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    font-size: 0.875rem;
}

.result-row span:first-child {
    color: var(--color-text-secondary);
}

.result-row span:last-child {
    font-weight: 600;
    color: var(--color-text);
    font-family: var(--font-mono);
}

/* ---- Data Sources ---- */
.sources-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

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

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

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

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

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

.citation-note {
    background: var(--color-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
}

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

/* ---- Responsive ---- */
@media (max-width: 1023px) {
    .gallery-grid { grid-template-columns: 1fr; }
    .tools-grid { grid-template-columns: 1fr; }
    .sources-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 479px) {
    .atlas-hero-stats { gap: var(--space-xl); }
    .ah-stat-num { font-size: 1.75rem; }
    .sources-grid { grid-template-columns: 1fr; }
    .tool-input-row { flex-direction: column; gap: var(--space-sm); }
    .gallery-footer { flex-direction: column; align-items: flex-start; }
}


/* ============================================
   Tool Index Cards (for atlas homepage)
   ============================================ */
.tools-index-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.tool-index-card {
    background: var(--color-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    transition: var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.tool-index-card .tic-visual {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #0a1628, #1a3a5c);
    position: relative;
    overflow: hidden;
}

.tool-index-card .tic-visual canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.tool-index-card .tic-body {
    padding: var(--space-xl);
}

.tool-index-card .tic-tags {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
}

.tool-index-card .tic-tag {
    background: var(--color-sky);
    color: var(--color-secondary-dark);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

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

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

.tool-index-card .tic-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

.tool-index-card .tic-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    transition: gap var(--transition-fast);
}

.tool-index-card:hover .tic-link {
    gap: 8px;
    color: var(--color-secondary-dark);
}

.tool-index-card .tic-status {
    font-size: 0.75rem;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.tic-status.ready {
    background: #E8F5E9;
    color: var(--color-primary-dark);
}

.tic-status.coming {
    background: #FFF3E0;
    color: var(--color-accent);
}

/* Tool section override */
#atlas-tools .section-header {
    margin-bottom: var(--space-2xl);
}

/* Responsive for tool cards */
@media (max-width: 1023px) {
    .tools-index-grid { grid-template-columns: 1fr; }
}