/* Made with drafting: one stylesheet for the home page and the model pages */

/* Colours, font and widths follow the Bootstrap 5.1 pages of the drafting
   guide and function reference, so that the three read as one project */
:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --text: #212529;
  --muted: #6c757d;
  --line: #dee2e6;
  --accent: #0d6efd;
  --accent-text: #ffffff;
  --code-bg: #f6f8fa;
  --code-ink: #6f42c1;
  --stage-bg: #eef1f4;
  --bar: #212529;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.06);
  --radius: 0.3rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.5 system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

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

img { max-width: 100%; display: block; }

code, pre { font-family: Consolas, "Courier New", monospace; }

code { color: var(--code-ink); font-size: 0.875em; }

pre {
  background: var(--code-bg);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.5;
}

pre code { color: inherit; font-size: 1em; }

/* The header: the dark bar of the guide and the function reference */

.site-header { background: var(--bar); }

.site-nav {
  margin: 0 auto;
  padding: 0.5rem 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3125rem 0;
  color: #ffffff;
  font-size: 1.25rem;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  flex-direction: column;
  flex-basis: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Below 992 px the links fold away behind the toggler, as Bootstrap's
   navbar-expand-lg does; nav.js opens and closes them */
.site-nav:not(.open) .nav-links { display: none; }

.toggler {
  padding: 0.25rem 0.75rem;
  font-size: 1.25rem;
  line-height: 1;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.25rem;
  cursor: pointer;
}

.toggler::before {
  content: "";
  display: inline-block;
  width: 1.5em;
  height: 1.5em;
  vertical-align: middle;
  background: no-repeat center / 100% url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.55%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.toggler:focus { outline: 0; box-shadow: 0 0 0 0.25rem rgba(255, 255, 255, 0.25); }

@media (min-width: 992px) {
  .site-nav { flex-wrap: nowrap; justify-content: flex-start; gap: 1rem; }
  .toggler { display: none; }
  .site-nav .nav-links,
  .site-nav:not(.open) .nav-links { display: flex; flex-direction: row; flex-basis: auto; }
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 0;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
}

.nav-links a:hover, .nav-links a:focus { color: rgba(255, 255, 255, 0.75); }

@media (min-width: 992px) {
  .nav-links a { padding: 0.5rem; }
}

.icon { width: 1em; height: 1em; fill: currentColor; }

.site-footer {
  margin: 48px auto 0;
  padding: 24px 12px 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

main { margin: 0 auto; padding: 0 12px; }

/* The widths of Bootstrap's container-xl: the full window below 1200 px,
   then 1140 px, then 1320 px */
@media (min-width: 1200px) {
  .site-nav, main, .site-footer { max-width: 1140px; }
}

@media (min-width: 1400px) {
  .site-nav, main, .site-footer { max-width: 1320px; }
}

/* Home page */

.intro { max-width: 720px; margin: 24px 0 36px; }

.intro h1 { font-size: 2.2rem; line-height: 1.2; margin: 0 0 12px; }

.intro p { color: var(--muted); margin: 0 0 16px; }

.button {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  padding: 9px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 24px;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  color: var(--text);
  text-decoration: none;
  transition: transform 0.15s ease;
}

.card:hover { transform: translateY(-2px); }

.card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }

.card-text { padding: 14px 18px 18px; }

.card h2 { margin: 0 0 2px; font-size: 1.2rem; }

.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.card .by { margin-bottom: 8px; font-style: italic; }

/* Model page */

.model-header { margin: 16px 0 28px; }

.model-header h1 { font-size: 2.2rem; line-height: 1.2; margin: 0 0 4px; }

.model-header .by { color: var(--muted); margin: 0 0 14px; }

.carousel .frame {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
}

.track::-webkit-scrollbar { display: none; }

.slide {
  flex: 0 0 100%;
  margin: 0;
  aspect-ratio: 4 / 3;
  max-height: 72vh;
  scroll-snap-align: center;
  display: flex;
  justify-content: center;
  background: var(--stage-bg);
}

.slide img { width: 100%; height: 100%; object-fit: contain; }

.carousel .nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.carousel .prev { left: 12px; }

.carousel .next { right: 12px; }

.thumbs {
  position: relative;
  display: flex;
  gap: 8px;
  margin-top: 10px;
  padding: 2px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.thumbs[hidden] { display: none; }

/* Centred while they fit; auto margins, unlike justify-content: center,
   leave the first thumbnail reachable when the strip has to scroll */
.thumb:first-child { margin-left: auto; }
.thumb:last-child { margin-right: auto; }

.thumb {
  flex: 0 0 auto;
  width: 88px;
  aspect-ratio: 4 / 3;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 6px;
  overflow: hidden;
  background: var(--stage-bg);
  opacity: 0.55;
  cursor: pointer;
}

.thumb img { width: 100%; height: 100%; object-fit: cover; }

.thumb[aria-current="true"] { border-color: var(--accent); opacity: 1; }

.making { margin-top: 32px; }

.requires { color: var(--muted); }

.viewer[hidden] { display: none; }

.stage {
  position: relative;
  height: min(70vh, 640px);
  border-radius: var(--radius);
  background: var(--stage-bg);
  box-shadow: var(--shadow);
  overflow: hidden;
  touch-action: none;
}

.stage canvas { display: block; width: 100%; height: 100%; }

.status {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  color: var(--muted);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  margin-top: 12px;
}

.parts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  flex: 1;
}

.parts li { display: flex; align-items: center; gap: 8px; }

.swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid var(--line);
}

.mode { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }

.mode button, .reset {
  border: 0;
  background: var(--surface);
  color: var(--text);
  padding: 3px 10px;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.mode button[aria-pressed="true"] { background: var(--accent); color: var(--accent-text); }

.reset { border: 1px solid var(--line); border-radius: 999px; }

.hint { color: var(--muted); font-size: 0.85rem; margin: 8px 0 0; }

.sections { margin-top: 40px; }

.part-section { margin-bottom: 28px; }

.part-section h2 {
  font-size: 1.3rem;
  margin: 0 0 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.part-section ul { padding-left: 1.2em; }

.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0 32px; }

table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }

th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }

th { color: var(--muted); font-weight: 600; }

.part-section table { display: block; overflow-x: auto; }

@media (max-width: 700px) {
  .intro h1, .model-header h1 { font-size: 1.7rem; }
  .pair { grid-template-columns: 1fr; }
  .thumb { width: 64px; }
  .carousel .nav { display: none; }
  .stage { height: 60vh; }
}