/* Page headers live in components.css (`.page-hero`), loaded on every page. */

/* ========================================================== catalog cards */

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: clamp(0.875rem, 1.4vw, 1.25rem);
}

.catalog-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 10.5rem;
  padding: clamp(1.15rem, 1.8vw, 1.5rem);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: inherit;
  text-decoration: none;
  transition: transform var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out), border-color var(--duration-fast) ease;
}

.catalog-card:hover,
.catalog-card:focus-visible {
  border-color: transparent;
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.catalog-card__meta {
  display: inline-block;
  align-self: flex-start;
  margin-bottom: var(--space-4);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background: var(--color-accent-wash);
  color: var(--color-accent);
  font-size: var(--text-xs);
  font-weight: 500;
}

.catalog-card h2 {
  margin-bottom: var(--space-2);
  font-size: var(--text-lg);
  font-weight: 600;
}

.catalog-card p {
  max-width: 30ch;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.catalog-card__arrow {
  align-self: flex-end;
  margin-top: auto;
  padding-top: var(--space-4);
  color: var(--color-accent);
  font-size: var(--text-lg);
  opacity: 0;
  transition: transform var(--duration-fast) var(--ease-out), opacity var(--duration-fast) ease;
}

.catalog-card:hover .catalog-card__arrow,
.catalog-card:focus-visible .catalog-card__arrow {
  opacity: 1;
}

.catalog-card:hover .catalog-card__arrow {
  transform: translateX(0.25rem);
}

.catalog-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(10rem, 15rem);
  gap: var(--space-4);
  align-items: end;
  margin-bottom: var(--space-6);
}

.catalog-controls .form-field {
  margin: 0;
}

.catalog-filter-status {
  grid-column: 1 / -1;
  min-height: 1.4rem;
  margin: calc(var(--space-2) * -1) 0 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.catalog-card[hidden] {
  display: none;
}

/* ============================================================= link index */

/*
 * An index of places: each entry on a hairline, the name large, a sentence
 * under it. Each carries the colour of the section it leads to (data-hue),
 * which fills the rule above it and tints its name under the pointer.
 */
.link-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(1.5rem, 4vw, 3.5rem);
  border-bottom: 1px solid var(--color-line);
}

.link-index a,
.link-index article {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
  padding-block: clamp(1.35rem, 2.5vw, 1.75rem);
  border-top: 1px solid var(--color-line);
  text-decoration: none;
}

.link-index a::before {
  content: "";
  position: absolute;
  top: -1px;
  right: 0;
  left: 0;
  height: 3px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 500ms var(--ease-out-quint);
}

.link-index a:is(:hover, :focus-visible)::before {
  transform: scaleX(1);
}

.link-index a:focus-visible {
  outline: none;
}

.link-index a:is(:hover, :focus-visible) h2 {
  color: var(--color-accent);
}

@media (max-width: 48rem) {
  .link-index {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* The type column repeated the title; the title alone carries it now. */
.link-index__type {
  display: none;
}

.link-index h2,
.link-index h3 {
  margin-bottom: var(--space-2);
  color: var(--color-text);
  font-size: var(--text-xl);
  font-weight: 700;
  transition: color 300ms var(--ease-out-quint);
}

.link-index p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.link-index__arrow {
  color: var(--color-accent);
  font-size: var(--text-xl);
  transition: transform 500ms var(--ease-out-quint);
}

.link-index a:hover .link-index__arrow {
  transform: translateX(0.25rem);
}

/* ========================================================== reading pages */

.reading-layout {
  display: grid;
  grid-template-columns: minmax(10rem, 0.28fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.reading-nav {
  position: sticky;
  top: calc(var(--header-height) + var(--space-5));
}

.reading-nav h2 {
  margin-bottom: var(--space-3);
  color: var(--color-text-faint);
  font-size: var(--text-sm);
  font-weight: 600;
}

.reading-nav a {
  display: block;
  padding-block: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  text-decoration: none;
}

.reading-nav a:hover {
  color: var(--color-accent);
}

.prose {
  max-width: 44rem;
}

.prose > :first-child {
  margin-top: 0;
}

.prose h2 {
  margin-top: clamp(2.5rem, 5vw, 3.75rem);
  margin-bottom: var(--space-4);
  font-size: var(--text-2xl);
  scroll-margin-top: calc(var(--header-height) + var(--space-5));
}

.prose h3 {
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
  font-size: var(--text-lg);
}

.prose p,
.prose li {
  color: var(--color-text-soft);
}

.prose p {
  margin-bottom: var(--space-5);
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
  margin-bottom: var(--space-6);
}

.prose li + li {
  margin-top: var(--space-2);
}

.prose a {
  color: var(--color-accent);
}

.prose-lead {
  color: var(--color-text) !important;
  font-size: var(--text-lg);
  line-height: 1.6;
}

.fact-list {
  margin: var(--space-6) 0;
  border-top: 1px solid var(--color-line);
}

.fact-list div {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: var(--space-5);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-line);
}

.fact-list dt {
  font-weight: 600;
}

.fact-list dd {
  color: var(--color-text-muted);
}

/* ============================================================ misc blocks */

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  gap: clamp(0.875rem, 1.4vw, 1.25rem);
}

.support-grid section {
  display: flex;
  flex-direction: column;
  padding: clamp(1.35rem, 2.2vw, 1.85rem);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.support-grid h2 {
  margin-bottom: var(--space-3);
  font-size: var(--text-lg);
  font-weight: 600;
}

.support-grid p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.support-grid a {
  display: inline-flex;
  margin-top: auto;
  padding-top: var(--space-4);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
}

.support-grid a:hover {
  text-decoration: underline;
}

.timeline {
  display: grid;
  border-top: 1px solid var(--color-line);
}

.timeline article {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: var(--space-6);
  padding-block: clamp(1.5rem, 3vw, 2.25rem);
  border-bottom: 1px solid var(--color-line);
}

/*
 * A changelog: each release opens with its date as a tag in the accent
 * colour, and the kinds of change are small labels rather than headings.
 */
.timeline time {
  align-self: start;
  justify-self: start;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background: var(--color-accent-wash);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.timeline article:first-child time {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.timeline h2 {
  margin-bottom: var(--space-3);
  font-size: var(--text-xl);
}

.timeline h3 {
  margin: var(--space-5) 0 var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
}

.timeline ul {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0;
  padding-left: 0;
  color: var(--color-text-soft);
  font-size: var(--text-sm);
  list-style: none;
}

.timeline li {
  position: relative;
  padding-left: 1.1rem;
}

.timeline li::before {
  content: "";
  position: absolute;
  top: 0.6em;
  left: 0.15rem;
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.7;
}

.notice {
  padding: var(--space-5);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.notice strong {
  display: block;
  margin-bottom: var(--space-2);
}

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

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  margin-top: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

@media (max-width: 48rem) {
  .catalog-controls {
    grid-template-columns: 1fr;
  }

  .reading-layout {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .reading-nav {
    position: static;
    display: flex;
    gap: var(--space-4);
    overflow-x: auto;
    padding-bottom: var(--space-2);
  }

  .reading-nav h2 {
    display: none;
  }

  .reading-nav a {
    flex: none;
  }

  .timeline article {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

@media (max-width: 32rem) {
  .fact-list div {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}

/* ------------------------------------------------------------- support */

/* What people came to do on the left; the answers they might not need to
 * ask for on the right, in a panel that stays in view. */
.support-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: start;
}

.support-lead__title,
.support-facts h2 {
  margin-bottom: var(--space-4);
  font-size: var(--text-2xl);
}

.support-facts {
  position: sticky;
  top: calc(var(--header-height) + 1rem);
  padding-left: clamp(1.25rem, 3vw, 2.25rem);
  border-left: 1px solid var(--color-line);
}

.support-facts .fact-list {
  margin: 0;
  border-top: 0;
}

.support-facts .fact-list div {
  grid-template-columns: 1fr;
  gap: var(--space-1);
}

.support-facts .fact-list div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.support-facts dt {
  font-size: var(--text-base);
  font-weight: 700;
}

.support-facts dd {
  margin: 0;
  font-size: var(--text-sm);
}

@media (max-width: 56rem) {
  .support-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .support-facts {
    position: static;
    padding-top: var(--space-6);
    padding-left: 0;
    border-top: 1px solid var(--color-line);
    border-left: 0;
  }
}