/* DIVAN — a chess room. Besley (a Clarendon, 1845-style) over Azeret Mono for notation.
   Ground is a green so dark it reads black until something sits on it. */
@font-face { font-family: "Besley"; src: url("../fonts/besley-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Besley"; src: url("../fonts/besley-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Besley"; src: url("../fonts/besley-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Besley"; src: url("../fonts/besley-latin-900-normal.woff2") format("woff2"); font-weight: 900; font-style: normal; font-display: swap; }
@font-face { font-family: "Azeret Mono"; src: url("../fonts/azeret-mono-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Azeret Mono"; src: url("../fonts/azeret-mono-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }

:root {
  --ground: #0a1410;
  --felt: #13362a;
  --ivory: #ece5d0;       /* 14.9:1 on ground */
  --ivory-2: #aebaac;     /* 9.3:1 on ground  */
  --cela: #9fd6bd;        /* 11.4:1 on ground; ground on cela 11.4:1 */
  --line: rgba(236, 229, 208, 0.2);
  --serif: "Besley", "Rockwell", "Clarendon", Georgia, serif;
  --mono: "Azeret Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --gut: clamp(1.25rem, 4.2vw, 4.5rem);
  --bar-h: 4.25rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--ground); -webkit-text-size-adjust: 100%; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  margin: 0; color: var(--ivory); background: var(--ground);
  font: 400 1.0625rem/1.62 var(--serif);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, canvas { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, p, dl, dd, ol { margin: 0; padding: 0; }
:focus-visible { outline: 2px solid var(--cela); outline-offset: 3px; }
::selection { background: var(--cela); color: var(--ground); }

.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; padding: 0; }
.skip { position: fixed; left: 1rem; top: -4rem; z-index: 50; background: var(--cela); color: var(--ground); padding: 0.8rem 1.1rem; font-family: var(--mono); font-size: 0.8rem; transition: top 0.2s; }
.skip:focus { top: 1rem; }

/* ---------------------------------------------------------------- stage */
.stage { position: fixed; inset: 0; z-index: 0; background: var(--ground); }
.stage canvas { width: 100%; height: 100%; opacity: 0; transition: opacity 1.4s ease; }
.gl-ready .stage canvas { opacity: 1; }
.gl-lost .stage canvas { opacity: 0.0; }
.veil {
  position: absolute; inset: 0; opacity: 0; pointer-events: none;
  background: radial-gradient(ellipse 80% 70% at 72% 48%, rgba(10, 20, 16, 0.6), rgba(10, 20, 16, 0.9));
}
.no-gl .stage, .gl-lost .stage {
  background: var(--ground) url("../img/poster.webp") 62% 50% / cover no-repeat;
}
.no-gl .stage canvas { display: none; }
.no-gl .veil { opacity: 0.55 !important; }

main { position: relative; z-index: 1; }

/* ---------------------------------------------------------------- bar */
.bar {
  position: fixed; inset: 0 0 auto 0; z-index: 20; height: var(--bar-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--gut);
}
.bar::before {
  content: ""; position: absolute; inset: 0; z-index: -1; opacity: 0; transition: opacity 0.4s;
  background: linear-gradient(to bottom, rgba(10, 20, 16, 0.92) 40%, rgba(10, 20, 16, 0));
}
.bar.is-solid::before { opacity: 1; }
.mark { font: 900 1.7rem/1 var(--serif); letter-spacing: -0.035em; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; }
.bar-nav { display: flex; gap: clamp(1rem, 2.6vw, 2.4rem); align-items: center; }
.bar-nav a {
  font: 500 0.74rem/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; text-decoration: none;
  min-height: 44px; display: inline-flex; align-items: center; color: var(--ivory-2); transition: color 0.2s;
}
.bar-nav a:hover { color: var(--ivory); }
.bar-nav .bar-cta { color: var(--ground); background: var(--ivory); padding: 0 1.1rem; }
.bar-nav .bar-cta:hover { background: var(--cela); color: var(--ground); }

/* ---------------------------------------------------------------- shared type */
.eyebrow { font: 500 0.74rem/1.4 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--cela); }
.lede { font-size: clamp(1.2rem, 1.9vw, 1.55rem); line-height: 1.45; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 1.5rem;
  font: 500 0.78rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; text-decoration: none;
  border: 1px solid var(--ivory); transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn-solid { background: var(--ivory); color: var(--ground); }
.btn-solid:hover { background: var(--cela); border-color: var(--cela); }
.btn-line:hover { border-color: var(--cela); color: var(--cela); }

/* ---------------------------------------------------------------- hero */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; align-items: flex-end;
  padding: calc(var(--bar-h) + 2rem) var(--gut) clamp(2.5rem, 9svh, 6rem);
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(90deg, rgba(10, 20, 16, 0.9) 0%, rgba(10, 20, 16, 0.55) 38%, rgba(10, 20, 16, 0) 62%);
}
.hero-copy { max-width: min(46rem, 100%); will-change: transform, opacity; }
.hero h1 {
  font: 900 clamp(3rem, 6.6vw, 7.4rem)/0.92 var(--serif); letter-spacing: -0.04em;
  margin: 1.1rem 0 1.6rem;
}
.hero h1 .line { display: block; white-space: nowrap; }
.hero-sub { max-width: 31rem; font-size: 1.18rem; color: var(--ivory); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.hero-hint {
  position: absolute; right: var(--gut); bottom: clamp(2.5rem, 9svh, 6rem);
  display: flex; flex-direction: column; align-items: center; gap: 0.8rem;
  font: 500 0.7rem/1 var(--mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--ivory-2);
  writing-mode: vertical-rl;
}
.hero-hint i { width: 1px; height: 3.2rem; background: var(--line); position: relative; overflow: hidden; }
.hero-hint i::after { content: ""; position: absolute; inset: 0; background: var(--cela); transform: translateY(-100%); animation: drip 2.4s cubic-bezier(.6, 0, .3, 1) infinite; }
@keyframes drip { 0% { transform: translateY(-100%); } 60%, 100% { transform: translateY(100%); } }

/* ---------------------------------------------------------------- the game */
.game { position: relative; height: calc(100svh + 45 * 17svh); }
.game-stick {
  position: sticky; top: 0; height: 100vh; height: 100svh;
  display: flex; align-items: center; padding: var(--bar-h) var(--gut) 1.5rem;
}
.game-stick::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(90deg, rgba(10, 20, 16, 0.92) 0%, rgba(10, 20, 16, 0.78) 30%, rgba(10, 20, 16, 0.35) 46%, rgba(10, 20, 16, 0) 62%);
}
.hud { width: min(29rem, 36vw); }
.hud-count { font: 500 0.74rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--ivory-2); display: flex; gap: 0.6em; align-items: baseline; }
.hud-count #hud-move { color: var(--cela); font-size: 1.1rem; font-variant-numeric: tabular-nums; }
.hud-head {
  font: 900 clamp(2.5rem, 4.5vw, 4.6rem)/0.98 var(--serif); letter-spacing: -0.035em;
  margin: 0.7rem 0 1.1rem; min-height: 1.05em; font-variant-numeric: tabular-nums;
}
.hud-text { font-size: 1.08rem; line-height: 1.55; min-height: 11.2em; max-width: 31ch; }
.rail { height: 2px; background: var(--line); margin: 0.4rem 0 1.1rem; position: relative; overflow: hidden; }
.rail i { position: absolute; inset: 0; background: var(--cela); transform: scaleX(0); transform-origin: left; }

.sheet summary {
  font: 500 0.72rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--ivory-2);
  min-height: 44px; display: flex; align-items: center; cursor: pointer; list-style: none; gap: 0.7rem;
}
.sheet summary::-webkit-details-marker { display: none; }
.sheet summary::after { content: "+"; font-size: 1rem; color: var(--cela); }
.sheet[open] summary::after { content: "\2212"; }
.ledger { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 1rem; padding-top: 0.3rem; max-height: 44svh; overflow: auto; scrollbar-width: thin; }
.ledger li { display: flex; align-items: center; border-bottom: 1px solid var(--line); min-height: 28px; }
.ledger .num { font: 400 0.68rem/1 var(--mono); color: var(--ivory-2); width: 2.1rem; flex: none; font-variant-numeric: tabular-nums; }
.ledger button {
  font: 400 0.76rem/1 var(--mono); color: rgba(174, 186, 172, 0.72); background: none; border: 0; cursor: pointer;
  padding: 0.35rem 0.4rem; margin: 0; min-height: 28px; text-align: left; flex: 1;
  transition: color 0.2s, background 0.2s;
}
.ledger button.played { color: var(--ivory); }
.ledger button.now { background: var(--cela); color: var(--ground); font-weight: 500; }
.ledger button:hover:not(.now) { color: var(--cela); }
.noscript { padding: 2rem var(--gut); }

/* the move in hand, pinned to its piece */
.tag { position: fixed; left: 0; top: 0; z-index: 8; pointer-events: none; opacity: 0; transition: opacity 0.25s; will-change: transform; }
.tag::before { content: ""; position: absolute; left: 0; bottom: 0; width: 1px; height: 26px; background: var(--cela); }
.tag::after { content: ""; position: absolute; left: -3px; bottom: -3px; width: 7px; height: 7px; background: var(--cela); border-radius: 50%; }
.tag-san {
  position: absolute; left: 0; bottom: 26px; transform: translateX(-50%); white-space: nowrap;
  font: 500 0.95rem/1 var(--mono); color: var(--ivory); background: rgba(10, 20, 16, 0.82);
  border: 1px solid var(--cela); padding: 0.4rem 0.65rem;
}

/* ---------------------------------------------------------------- the room */
.room, .visit { position: relative; padding: clamp(5rem, 14svh, 9rem) var(--gut); }
.room { min-height: 100svh; display: flex; align-items: center; }
.room::before, .visit::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(to bottom, rgba(10, 20, 16, 0), rgba(10, 20, 16, 0.5) 20%, rgba(10, 20, 16, 0.5)); pointer-events: none; }
.room-grid, .visit-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 3rem 2rem; width: 100%; align-items: start; }
.room-lead { grid-column: 1 / span 6; grid-row: 1; }
.room-tariff { grid-column: 8 / -1; grid-row: 1; padding-top: 2.4rem; }
.visit-grid > :first-child { grid-column: 1 / span 6; grid-row: 1; }
.visit-grid > :last-child { grid-column: 8 / -1; grid-row: 1; padding-top: 0.6rem; }
.room h2, .visit h2 { font: 900 clamp(2.5rem, 5.6vw, 5.8rem)/0.95 var(--serif); letter-spacing: -0.04em; margin: 1rem 0 1.6rem; }
.room-lead p + p { margin-top: 1.1rem; max-width: 40ch; }
.room-lead .lede { max-width: 28ch; margin-bottom: 1.6rem; }
.visit .lede { max-width: 30ch; }
.visit-contact { display: flex; flex-direction: column; gap: 0.2rem; margin-top: 1.6rem; font: italic 400 1.5rem/1.3 var(--serif); }
.visit-contact a { text-decoration-thickness: 1px; text-underline-offset: 0.25em; min-height: 44px; display: inline-flex; align-items: center; width: fit-content; }
.visit-contact a:hover { color: var(--cela); }
.tariff-h { font: 500 0.74rem/1 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--cela); margin-bottom: 0.8rem; }
.tariff > div { display: flex; align-items: baseline; gap: 1.4rem; padding: 0.95rem 0; border-top: 1px solid var(--line); }
.tariff > div:last-child { border-bottom: 1px solid var(--line); }
.tariff dt { flex: 1; }
.tariff dd { font: 500 0.9rem/1.3 var(--mono); text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.hours dd { color: var(--ivory); }

.foot { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; padding: 2.2rem var(--gut) calc(2.2rem + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: var(--ground); font: 400 0.78rem/1.4 var(--mono); color: var(--ivory-2); }
.foot-mark { font: 900 1.6rem/1 var(--serif); letter-spacing: -0.035em; color: var(--ivory); }

/* ---------------------------------------------------------------- tall screens: a different composition
   The board takes the top of the screen, the move takes the bottom. */
@media (max-width: 900px) {
  :root { --bar-h: 3.6rem; }
  .bar-nav a:not(.bar-cta) { display: none; }
  .mark { font-size: 1.5rem; }

  .hero { align-items: flex-end; padding-bottom: calc(2rem + env(safe-area-inset-bottom)); }
  .hero::before { background: linear-gradient(to top, rgba(10, 20, 16, 0.94) 0%, rgba(10, 20, 16, 0.78) 42%, rgba(10, 20, 16, 0) 72%); }
  .hero h1 { font-size: clamp(1.9rem, 10.6vw, 5rem); margin: 0.8rem 0 1rem; }
  .hero-sub { font-size: 1rem; }
  .hero-actions { margin-top: 1.2rem; }
  .hero-actions .btn { flex: 1 1 9rem; padding: 0 0.9rem; letter-spacing: 0.08em; }
  .hero-hint { display: none; }

  .game-stick { align-items: flex-end; padding: var(--bar-h) 0 0; }
  .game-stick::before { background: linear-gradient(to top, rgba(10, 20, 16, 0.96) 0%, rgba(10, 20, 16, 0.92) 40%, rgba(10, 20, 16, 0) 68%); }
  .hud { width: 100%; padding: 0 var(--gut) calc(0.7rem + env(safe-area-inset-bottom)); }
  .hud-head { font-size: clamp(2rem, 9vw, 3rem); margin: 0.4rem 0 0.55rem; }
  .hud-text { font-size: 0.98rem; line-height: 1.45; min-height: 8.6em; max-width: none; }
  .rail { margin-bottom: 0.2rem; }
  .ledger { grid-template-columns: repeat(2, 1fr); max-height: 34svh; }
  .ledger li { min-height: 40px; }
  .ledger button { min-height: 40px; font-size: 0.85rem; }
  .sheet[open] {
    position: fixed; inset: auto 0 0 0; z-index: 15; max-height: 62svh; overflow: auto;
    background: rgba(10, 20, 16, 0.98); border-top: 1px solid var(--line); padding: 0 var(--gut) calc(0.8rem + env(safe-area-inset-bottom));
  }
  .sheet[open] summary { position: sticky; top: 0; background: rgba(10, 20, 16, 0.98); z-index: 1; }
  .sheet[open] .ledger { max-height: none; overflow: visible; }

  .room-grid, .visit-grid { grid-template-columns: 1fr; gap: 2.4rem; }
  .room-lead, .room-tariff, .visit-grid > :first-child, .visit-grid > :last-child { grid-column: 1; grid-row: auto; padding-top: 0; }
  .room::before, .visit::before { background: rgba(10, 20, 16, 0.55); }
}
@media (max-width: 900px) and (max-height: 720px) {
  .hud-text { min-height: 8.2em; font-size: 0.92rem; line-height: 1.4; }
  .hud-head { font-size: 1.9rem; }
  .hero h1 { font-size: clamp(2.3rem, 9.6vw, 3.6rem); }
  .hero-sub { font-size: 0.95rem; }
}

/* ---------------------------------------------------------------- reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .hero-hint i::after { transform: none; }
}