/*
 * Math Area Detail
 * Uses shared pc- page chrome, dg- data cards/stats, btn, badge, avatar,
 * status-dot, and empty-state primitives. ma- classes only compose the page.
 */

main.math-area-detail {
  display: block;
  opacity: 1;
  max-width: var(--layout-max);
  padding-top: var(--spacing-sm);
  padding-bottom: var(--spacing-3xl);
}

.ma-hero {
  position: relative;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md) 0 var(--spacing-md);
  overflow: hidden;
  border-bottom: 1px solid var(--color-border-primary);
}

.ma-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(280px, 1fr);
  gap: var(--spacing-xl);
  align-items: start;
}

.ma-hero-copy {
  min-width: 0;
}

.ma-hero-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--spacing-sm);
  padding-top: calc(var(--spacing-xl) + var(--spacing-sm));
}

.ma-header {
  align-items: flex-start;
  max-width: 760px;
  margin-bottom: var(--spacing-sm);
}

.math-area-detail .pc-label {
  font-family: var(--font-sans);
  letter-spacing: 0.04em;
}

.ma-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0;
}

.ma-description {
  max-width: 680px;
}

.ma-actions {
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.ma-primary-action {
  min-height: 44px;
  padding-inline: var(--spacing-lg);
  font-size: var(--font-size-md);
}

.ma-action-form {
  display: inline-flex;
  margin: 0;
}

.ma-hero-svg {
  width: min(260px, 100%);
  height: auto;
  color: var(--color-accent);
}

.ma-svg-grid,
.ma-svg-axis,
.ma-svg-curve,
.ma-svg-faint {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ma-svg-grid {
  stroke: var(--color-border-secondary);
  stroke-width: 1;
}

.ma-svg-axis {
  stroke: var(--color-text-primary);
  stroke-width: 1.6;
  opacity: 0.74;
}

.ma-svg-curve {
  stroke: currentColor;
  stroke-width: 2;
}

.ma-svg-faint {
  stroke: var(--color-text-tertiary);
  stroke-width: 1.4;
  opacity: 0.42;
}

.ma-svg-dot {
  fill: var(--color-bg-primary);
  stroke: currentColor;
  stroke-width: 2;
}

.ma-svg-label {
  fill: var(--color-text-tertiary);
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0;
}

.ma-stats {
  margin-bottom: 0;
}

.ma-stat-link {
  color: inherit;
  text-decoration: none;
}

.ma-stat-link:hover .dg-stat-label {
  color: var(--color-text-primary);
  text-decoration: underline;
}

.ma-tabs {
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-primary);
  overflow-x: auto;
  scrollbar-width: thin;
}

.ma-tabs .pc-tab {
  border-radius: var(--radius-md);
  letter-spacing: 0;
  white-space: nowrap;
}

.ma-shell {
  align-items: start;
}

.ma-panel[hidden] {
  display: none;
}

.ma-panel.is-active {
  display: block;
}

.ma-section {
  margin-top: var(--spacing-xl);
}

.ma-section-header {
  margin-bottom: var(--spacing-md);
}

.ma-section-header--split {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.ma-section-title {
  margin: 0;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

.ma-section-desc {
  margin: var(--spacing-xs) 0 0;
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
}

.ma-overview-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--spacing-md);
}

.ma-overview-card {
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  min-height: 160px;
  padding: var(--spacing-md);
}

.ma-overview-card--activity {
  grid-column: span 7;
}

.ma-overview-card--resources {
  grid-column: span 5;
}

.ma-overview-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.ma-metric-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.ma-metric-row strong {
  color: var(--color-text-primary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.ma-mini-list {
  display: grid;
  gap: var(--spacing-xs);
}

.ma-mini-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--spacing-xs) var(--spacing-sm);
  align-items: center;
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border-secondary);
}

.ma-mini-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.ma-mini-title {
  min-width: 0;
  overflow: hidden;
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ma-mini-meta {
  grid-column: 2;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.ma-feed-list {
  margin-top: var(--spacing-sm);
}

.ma-feed-card {
  display: block;
  padding: var(--spacing-sm);
}

.ma-feed-layout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--spacing-sm);
  align-items: stretch;
}

.ma-vote-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  border-right: 1px solid var(--color-border-secondary);
  padding-right: var(--spacing-sm);
}

.ma-vote-btn {
  width: 44px;
  min-width: 44px;
  height: 44px;
  min-height: 44px;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
}

.ma-vote-btn:hover,
.ma-vote-btn.active {
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
}

.ma-vote-score {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
}

.ma-feed-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--spacing-sm);
  min-width: 0;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  color: inherit;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.ma-feed-link:hover {
  background: color-mix(in srgb, var(--color-accent) 5%, transparent);
  text-decoration: none;
}

.ma-feed-avatar {
  margin-top: 2px;
}

.ma-feed-body,
.ma-card-row,
.ma-resource-card,
.ma-featured-card,
.ma-group-card,
.ma-event-card,
.ma-subarea-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.ma-feed-meta,
.ma-card-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  min-width: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.ma-feed-title,
.ma-card-title {
  display: block;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: var(--line-height-snug);
}

.ma-feed-desc,
.ma-card-text,
.ma-card-meta {
  display: block;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
}

.ma-prose {
  padding: var(--spacing-md);
}

.ma-prose p,
.ma-prose ul {
  margin: var(--spacing-sm) 0 0;
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.ma-prose ul {
  padding-left: var(--spacing-lg);
}

.ma-resource-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
}

.ma-rating {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.ma-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-primary);
}

.ma-empty-state {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.ma-empty-state .empty-state-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  color: var(--color-accent);
}

.ma-see-more {
  margin: var(--spacing-md) 0 0;
  font-size: var(--font-size-sm);
}

.ma-see-more a {
  color: var(--color-text-link);
  text-decoration: none;
}

.ma-see-more a:hover {
  text-decoration: underline;
}

.ma-event-card.is-past {
  opacity: 0.72;
}

.ma-rail {
  gap: var(--spacing-xl);
}

.ma-rail-toggle {
  display: none;
  margin-bottom: var(--spacing-md);
}

.ma-rail-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.ma-rail-link {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  align-items: flex-start;
  padding: var(--spacing-sm);
  border: 0;
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast);
}

.ma-rail-link:hover {
  background: color-mix(in srgb, var(--color-accent) 5%, transparent);
}

.ma-rail-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

.ma-rail-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.ma-rail-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.ma-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.ma-tag {
  text-decoration: none;
}

.ma-tag:hover {
  background: color-mix(in srgb, var(--color-accent) 8%, transparent);
  text-decoration: none;
}

.ma-more-count {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.ma-vote-btn:focus-visible,
.ma-feed-link:focus-visible,
.ma-rail-link:focus-visible,
.ma-tag:focus-visible,
.ma-see-more a:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}@media (max-width: 1024px) {
  .ma-hero-layout {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .ma-hero-aside {
    align-items: flex-start;
    padding-top: 0;
  }

  .ma-hero-svg {
    display: none;
  }

  .ma-shell {
    grid-template-columns: 1fr;
  }

  .ma-rail {
    position: static;
    border-left: 0;
    border-top: 1px solid var(--color-border-primary);
    padding: var(--spacing-lg) 0 0;
  }
}

@media (max-width: 640px) {
  main.math-area-detail {
    padding-top: var(--spacing-sm);
  }

  .ma-hero {
    padding-top: var(--spacing-sm);
  }

  .ma-header {
    gap: var(--spacing-md);
  }

  .ma-title {
    font-size: var(--font-size-3xl);
  }

  .ma-section-header--split,
  .ma-feed-layout {
    grid-template-columns: 1fr;
  }

  .ma-overview-grid {
    grid-template-columns: 1fr;
  }

  .ma-overview-card,
  .ma-overview-card--activity,
  .ma-overview-card--resources {
    grid-column: auto;
    min-height: 0;
  }

  .ma-section-header--split {
    display: grid;
  }

  .ma-rail-toggle {
    display: inline-flex;
  }

  .ma-rail.is-expanded {
    display: flex;
  }

  .ma-vote-column {
    flex-direction: row;
    justify-content: flex-start;
    border-right: 0;
    border-bottom: 1px solid var(--color-border-secondary);
    padding: 0 0 var(--spacing-sm);
  }
}