/* Dragonfall promo site: the game's own world. Colours are the game's palette (src/engine/palette.js); pictures are its frames,
   scaled by whole pixels with no smoothing; the wall is its stone deck. Headings: Silkscreen. Reading text: Atkinson Hyperlegible. */
@font-face { font-family: 'Silkscreen'; src: url('fonts/Silkscreen-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Silkscreen'; src: url('fonts/Silkscreen-Bold.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('fonts/AtkinsonHyperlegible-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('fonts/AtkinsonHyperlegible-Bold.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Atkinson Hyperlegible'; src: url('fonts/AtkinsonHyperlegible-Italic.woff2') format('woff2'); font-weight: 400; font-style: italic; font-display: swap; }

:root {
  --out: #120a12; --panel: #1f1420; --panel-l: #33222f;
  --rock-l: #6a3a40; --rock: #45252f; --rock-d: #2a1620;
  --gold: #f2c84b; --sun: #ffd98a; --white-hot: #fff7d6; --belly: #e8c886;
  --sky3: #a33a3f; --sky4: #d9683a; --sky5: #f2a64b; --frost: #6fd8ff;
  --steel-h: #eef2f5; --steel: #a9b6c4;
  --px: 4px; /* one frame pixel on this page */
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { background: var(--out); scrollbar-color: var(--rock-l) var(--out); }
body {
  margin: 0; color: var(--steel-h); font: 400 1.125rem/1.6 'Atkinson Hyperlegible', 'Segoe UI', sans-serif;
  background: var(--out) url('media/wall.png') 50% 0 / calc(160 * var(--px)) calc(28 * var(--px)) repeat;
  image-rendering: pixelated; -webkit-font-smoothing: antialiased; overflow-x: clip;
  padding: env(safe-area-inset-top) max(16px, env(safe-area-inset-right)) env(safe-area-inset-bottom) max(16px, env(safe-area-inset-left));
}
::selection { background: var(--gold); color: var(--out); }
img { image-rendering: pixelated; display: block; max-width: 100%; }
a { color: var(--sun); text-decoration-thickness: 2px; text-underline-offset: 4px; }
a:hover { color: var(--white-hot); }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* carved stone: the bevel of the game's frame (light upper left, dark lower right) and a steel rivet in each corner */
.stone {
  position: relative; background: var(--panel);
  border: var(--px) solid var(--rock);
  box-shadow: inset var(--px) var(--px) 0 var(--rock-l), inset calc(-1 * var(--px)) calc(-1 * var(--px)) 0 var(--rock-d), 0 0 0 var(--px) var(--out);
}
.stone > .rivet { position: absolute; width: calc(2 * var(--px)); height: calc(2 * var(--px)); background: var(--steel); box-shadow: inset calc(-0.5 * var(--px)) calc(-0.5 * var(--px)) 0 #687690; }
.rivet.tl { top: var(--px); left: var(--px); } .rivet.tr { top: var(--px); right: var(--px); }
.rivet.bl { bottom: var(--px); left: var(--px); } .rivet.br { bottom: var(--px); right: var(--px); }

main { max-width: calc(160 * var(--px) + 48px); margin: 0 auto; padding: 32px 0 48px; }

/* the stage: the title frame itself */
.stage { padding: calc(2 * var(--px)); }
.stage img { width: 100%; height: auto; aspect-ratio: 160 / 116; }

.pitch { margin: 40px 0 0; text-align: center; }
.pitch .line { font: 700 clamp(1.5rem, 5.2vw, 2.1rem)/1.25 'Atkinson Hyperlegible', sans-serif; color: var(--sun); margin: 0 auto; max-width: 22ch; text-wrap: balance; text-shadow: 0 2px 0 var(--out); }
.pitch .more { color: var(--belly); margin: 16px auto 0; max-width: 36ch; text-wrap: pretty; }

.cta { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; margin: 32px 0 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 64px; padding: 0 28px;
  font: 700 1rem/1 'Silkscreen', monospace; letter-spacing: 0.04em; text-transform: uppercase; text-decoration: none;
  color: var(--sun); background: var(--rock); border: var(--px) solid var(--gold);
  box-shadow: inset 0 var(--px) 0 var(--rock-l), 0 var(--px) 0 var(--out);
  transition: transform 80ms steps(1), box-shadow 80ms steps(1), color 120ms;
}
.btn:hover { color: var(--white-hot); background: var(--rock-l); }
.btn:active { transform: translateY(var(--px)); box-shadow: inset 0 var(--px) 0 var(--rock-l), 0 0 0 var(--out); } /* the game's buttons sink one pixel */
.btn.quiet { border-color: var(--rock-l); color: var(--steel); background: var(--panel); cursor: default; }
.btn.quiet:hover { background: var(--panel); color: var(--steel); }
.btn.quiet:active { transform: none; }

h2 { font: 700 1.25rem/1.3 'Silkscreen', monospace; letter-spacing: 0.04em; text-transform: uppercase; color: var(--gold); margin: 72px 0 20px; text-align: center; text-shadow: 0 var(--px) 0 var(--out); }

/* how a duel goes: the real screens at 2x, side by side; they scroll sideways on a phone */
.duel { display: grid; grid-auto-flow: column; grid-auto-columns: calc(320px + 2 * var(--px)); gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 4px 4px 16px; margin: 0 -4px; scrollbar-width: thin; }
.duel figure { margin: 0; scroll-snap-align: center; }
.duel .stone { padding: 0; }
.duel img { width: 320px; height: 560px; }
.swipe { margin: -8px 0 16px; text-align: center; font-size: 0.95rem; color: var(--steel); }
@media (min-width: 760px) { .swipe { display: none; } }
@media (min-width: 760px) { /* room to lay them all out: the row breaks out of the column and wraps, centred */
  .duel { display: flex; flex-wrap: wrap; justify-content: center; gap: 36px 24px; overflow: visible; margin: 0 calc(50% - min(540px, 50vw - 24px)); padding: 4px 0 0; } /* three a row at most: 3 + 2, never 4 + 1 */
  .duel figure { width: calc(320px + 2 * var(--px)); }
}
.duel figcaption { margin: 14px 4px 0; font-size: 1rem; line-height: 1.5; color: var(--belly); }
.duel figcaption b { display: block; font: 700 0.875rem/1.4 'Silkscreen', monospace; letter-spacing: 0.04em; text-transform: uppercase; color: var(--sun); margin-bottom: 4px; }

.facts { padding: 28px 28px 24px; }
.facts ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.facts li { padding-left: 28px; position: relative; text-wrap: pretty; }
.facts li::before { content: ''; position: absolute; left: 4px; top: 0.55em; width: calc(2 * var(--px)); height: calc(2 * var(--px)); background: var(--gold); box-shadow: var(--px) var(--px) 0 var(--out); }

footer { max-width: calc(160 * var(--px) + 48px); margin: 0 auto; padding: 24px 0 40px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: center; font-size: 0.95rem; color: var(--steel); }
footer a { color: var(--steel-h); }

/* the privacy page: a reading slab */
.doc { padding: 32px clamp(20px, 5vw, 44px) 36px; }
.doc .home { font: 700 0.875rem/1 'Silkscreen', monospace; letter-spacing: 0.04em; text-transform: uppercase; }
.doc h1 { font: 700 clamp(1.5rem, 5vw, 2rem)/1.2 'Silkscreen', monospace; color: var(--gold); margin: 24px 0 8px; text-shadow: 0 var(--px) 0 var(--out); }
.doc .meta { color: var(--steel); margin: 0 0 24px; font-size: 1rem; }
.doc h2 { text-align: left; font-size: 1rem; margin: 40px 0 12px; }
.doc p, .doc li { max-width: 68ch; text-wrap: pretty; }
.doc ul { padding-left: 1.2em; }
.doc li { margin: 8px 0; }
.doc li::marker { color: var(--gold); }

@media (max-width: 560px) {
  :root { --px: 3px; }
  main { padding-top: 16px; }
  .pitch { margin-top: 28px; }
  .btn { width: 100%; }
  h2 { margin-top: 56px; }
}
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }