/* ==========================================================================
   Content sites: the /sites/ index page and the colour band on the homepage.
   Rides on the tokens in home.css, so it follows the light/dark theme and
   prints sensibly. Motion is skipped when the visitor prefers less.
   ========================================================================== */

/* ---------- Page hero ---------- */
.sites-hero {
  width: min(var(--measure), calc(100% - 2rem));
  margin-inline: auto;
  padding: 3.25rem 0 0.5rem;
}
.sites-hero h1 {
  font-family: var(--serif);
  font-weight: 460;
  font-size: clamp(2rem, 4.6vw, 3.5rem);
  line-height: 1.07;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  max-width: 24ch;
}

/* ---------- Ribbon: a moving strip of the artwork ---------- */
.ribbon { margin: 0; }
.ribbon-mask {
  overflow: hidden;
  display: grid;
  gap: 0.7rem;
  padding: 1.5rem 0 0.5rem;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
}
.ribbon-row {
  display: flex;
  width: max-content;
  gap: 0.7rem;
  will-change: transform;
  animation: ribbon-slide 110s linear infinite;
}
.ribbon-row.ribbon-reverse { animation-direction: reverse; animation-duration: 140s; }
.ribbon-copy { display: flex; gap: 0.7rem; }
.ribbon-row img {
  display: block;
  flex: none;
  width: 19rem;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 0.65rem;
  background: var(--bg-sunk);
  box-shadow: var(--shadow-sm);
}
/* The row holds one full set of tiles and then a copy of that set, so sliding
   it by half its own width lands exactly on the copy and the loop is seamless.
   Half a row is half a gap short of the true cycle, hence the 0.35rem nudge
   (half of the 0.7rem gap) — change them together. */
@keyframes ribbon-slide {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-50% - 0.35rem)); }
}
/* Sits still for anyone who prefers less motion, and for print. */
@media (prefers-reduced-motion: reduce) {
  .ribbon-row { animation: none !important; }
}

.nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }

/* ---------- Jump list ---------- */
.jump {
  width: min(var(--measure), calc(100% - 2rem));
  margin: 2.75rem auto 0;
}
.jump ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.jump a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.3rem 0.95rem;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  font-weight: 600;
  font-size: 0.97rem;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.jump a:hover { border-color: var(--ink); transform: translateY(-1px); }
.swatch {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--c);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c) 22%, transparent);
}
.jump-count { font-family: var(--mono); font-size: 0.78rem; color: var(--muted); }

/* ---------- Groups of sites ---------- */
.sites-list {
  width: min(var(--measure), calc(100% - 2rem));
  margin-inline: auto;
}
.site-group { padding: 3.25rem 0 0; }
.site-group-head { padding-bottom: 0.2rem; }
.site-group-head::after {
  content: "";
  display: block;
  height: 3px;
  border-radius: 2px;
  margin-top: 0.95rem;
  background: linear-gradient(90deg, var(--group-accent), color-mix(in srgb, var(--group-accent) 8%, transparent));
}
.site-group-head h2 {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--serif);
  font-weight: 460;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
}
.group-num {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--group-accent);
}
.group-blurb {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 0.7rem;
  margin: 0;
  color: var(--muted);
}
.group-count {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--group-accent);
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 0.05rem 0.5rem;
  white-space: nowrap;
}

.site-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(19.5rem, 1fr));
  gap: 1.25rem;
}

/* ---------- One site ---------- */
.site-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.28s ease, border-color 0.28s ease;
}
.site-card:hover, .site-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--card-accent);
  box-shadow: var(--shadow-md);
}
.site-shot {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-sunk);
}
.site-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.site-card:hover .site-shot img, .site-card:focus-within .site-shot img { transform: scale(1.05); }
.site-shot-edge {
  position: absolute;
  inset: auto 0 0 0;
  height: 4px;
  background: var(--card-accent);
}

.site-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1rem 1.1rem 0.9rem;
}
.site-kind {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.3rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
/* The accent colours are too light to read as text, so they mark the label with a dot instead. */
.site-kind::before {
  content: "";
  flex: none;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--card-accent);
}
.site-name {
  font-family: var(--serif);
  font-weight: 560;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 0.4rem;
}
.site-name a { text-decoration: none; }
.site-card:hover .site-name a { color: var(--card-accent); text-decoration: underline; text-underline-offset: 0.18em; }
.site-desc { margin: 0; color: var(--muted); font-size: 0.99rem; }

.site-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 1.1rem;
  margin: auto 0 0;
  padding-top: 0.5rem;
}
.site-go {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 44px;
  font-weight: 600;
  text-decoration: none;
}
.site-go span { transition: transform 0.2s ease; }
.site-card:hover .site-go { color: var(--card-accent); }
.site-card:hover .site-go span { transform: translateX(4px); }
.site-repo, .site-repo-none {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.92rem;
  color: var(--muted);
}
.site-repo { text-decoration: none; }
.site-repo:hover { color: var(--ink); text-decoration: underline; }
.site-repo-none { font-style: italic; }

/* ---------- Closing note ---------- */
.sites-note {
  width: min(var(--measure), calc(100% - 2rem));
  margin: 4.5rem auto 0;
  padding: 1.5rem 1.6rem 1.3rem;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow-sm);
}
.sites-note h2 {
  font-family: var(--serif);
  font-weight: 460;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}
.sites-note p { margin: 0 0 0.75rem; color: var(--muted); max-width: 62ch; }
.sites-note a { color: var(--ink); }
.sites-note .actions { margin-top: 0.4rem; }

/* ---------- The band on the homepage ---------- */
.sites-band { margin-top: 1.5rem; }
.sites-band-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  width: min(var(--measure), calc(100% - 2rem));
  margin-inline: auto;
  padding: 1.6rem 0 0.5rem;
}
.sites-band h2 {
  font-family: var(--serif);
  font-weight: 460;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
}
.sites-band p {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
}
.sites-band-text { flex: 1 1 26rem; }
.sites-band .button { white-space: nowrap; }
.sites-band-link span { display: inline-block; transition: transform 0.2s ease; }
.sites-band .button:hover span { transform: translateX(4px); }

/* ---------- Reveal on scroll (only with JS and motion allowed) ---------- */
html.js.motion .site-card.reveal, html.js.motion .sites-note.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1), border-color 0.28s ease, box-shadow 0.28s ease;
}
html.js.motion .site-card.reveal.in, html.js.motion .sites-note.reveal.in { opacity: 1; transform: none; }
html.js.motion .site-card.reveal.in:hover, html.js.motion .site-card.reveal.in:focus-within { transform: translateY(-4px); }

/* ---------- Small screens ---------- */
@media (max-width: 640px) {
  .sites-hero { padding-top: 2rem; }
  .sites-hero h1 { max-width: none; }
  .site-grid { grid-template-columns: 1fr; }
  .jump { margin-top: 1.75rem; }
  .site-group { padding-top: 2.5rem; }
  .ribbon-row img { width: 15rem; }
  .sites-band-inner { padding-top: 1.2rem; }
}

/* In dark mode the artwork stays vivid; drop the highlights a touch so the
   cards read as part of the page rather than glowing off it. */
:root[data-theme="dark"] .site-shot img,
:root[data-theme="dark"] .ribbon-row img { filter: brightness(0.94) saturate(1.02); }

@media (forced-colors: active) {
  .site-card, .jump a, .sites-note, .ribbon-row img { border: 1px solid CanvasText; }
}

@media print {
  .ribbon, .jump { display: none; }
  .site-card { break-inside: avoid; box-shadow: none; }
  .site-shot { aspect-ratio: auto; }
}