/* Palette plate 151 (Sanzo Wada). Dominant sulpher-yellow ~48% · counter yellow-orange ~30% (meaning: active / danger)
   · support Vandar Poel's blue ~22% (ink). One radius (2px), flat stones only. */
:root{
  --dom:#f5ecc2; --counter:#f99d1b; --ink:#064f6e;
  --wood:#ebd3a2; --grid:#71502f; --black:#111314; --white:#ffffff;
  --ink-soft:rgba(6,79,110,.62); --rule:rgba(6,79,110,.22);
  --r:2px; --tap:44px;
  --f:"Prompt","Noto Sans Thai","IBM Plex Sans Thai",ui-sans-serif,sans-serif;
  /* type scale 1.25: 13 / 15 / 18 / 23 / 29 / 36 */
  --t1:.8125rem; --t2:.9375rem; --t3:1.125rem; --t4:1.4375rem; --t5:1.8rem; --t6:2.25rem;
}
*{box-sizing:border-box;margin:0}
[hidden]{display:none!important}
html,body{height:100%;background:var(--dom);color:var(--ink);font-family:var(--f);font-size:var(--t2);line-height:1.5;-webkit-text-size-adjust:100%}
body{overflow-x:hidden}
button,select{font:inherit;color:inherit}
button{min-height:var(--tap);min-width:var(--tap);padding:0 .9em;border:1.5px solid var(--ink);background:transparent;border-radius:var(--r);cursor:pointer;touch-action:manipulation}
button:focus-visible,select:focus-visible{outline:3px solid var(--counter);outline-offset:2px}
button.primary{background:var(--counter);border-color:var(--counter);color:var(--black);font-weight:600}
button.quiet{border-color:transparent;text-decoration:underline;text-underline-offset:3px}
button[aria-pressed="true"]{background:var(--ink);color:var(--dom)}
button[aria-pressed="true"] .en{color:inherit}
button:disabled{opacity:.4;cursor:default}
.en{color:var(--ink-soft);font-size:.86em}
h1{font-size:var(--t6);line-height:1.1;font-weight:600}
h2{font-size:var(--t4);font-weight:600;line-height:1.2}
h3{font-size:var(--t3);font-weight:600;line-height:1.3}

/* ---------- Board ---------- */
svg.board{display:block;aspect-ratio:1;width:100%;height:auto;touch-action:none;user-select:none;-webkit-user-select:none}
.board .wood{fill:var(--wood)} .board .ln{stroke:var(--grid);stroke-width:.04} .board .hoshi{fill:var(--grid)}
.board .coord{fill:var(--grid);font-size:.36px;font-family:var(--f);text-anchor:middle;dominant-baseline:central;opacity:.8}
.board .sb{fill:var(--black)} .board .sw{fill:var(--white);stroke:#cbb88f;stroke-width:.03}
.board .stone{filter:none}
.board .ghost{opacity:.45}
.board .last{fill:none;stroke:var(--counter);stroke-width:.09}
.board .lib{fill:none;stroke:var(--ink);stroke-width:.07}
.board .atari{fill:var(--counter)} .board .atari-t{fill:var(--black);font-size:.32px;font-weight:600;text-anchor:middle;dominant-baseline:central;font-family:var(--f)}
.board .ter-b{fill:var(--black);opacity:.75} .board .ter-w{fill:var(--white);stroke:var(--grid);stroke-width:.03}
.board .cap{fill:none;stroke:var(--counter);stroke-width:.06;stroke-dasharray:.12 .08}
.board .mask{fill:var(--ink);opacity:.1}
.board .own-b{fill:var(--ink);opacity:.35}
.board .own-w{fill:var(--white);stroke:var(--ink);stroke-width:.04;opacity:.9}
.board .dead{stroke:var(--counter);stroke-width:.09}
.board .sensei{fill:none;stroke:var(--ink);stroke-width:.07}
.board .sensei-v{fill:var(--ink);font-size:.28px;font-weight:600;text-anchor:middle;dominant-baseline:central;font-family:var(--f)}
.board .pulse{animation:pulse 1s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35}}
@media (prefers-reduced-motion:reduce){.board .pulse{animation:none}}

/* ---------- Lobby ---------- */
.lobby{min-height:100dvh;display:grid;grid-template-columns:minmax(0,1fr);gap:1.25rem;padding:max(1rem,env(safe-area-inset-top)) 1rem 1.5rem;max-width:1180px;margin:0 auto;align-content:start}
.lobby .preview{width:min(100%,180px)}
.lobby form{display:grid;gap:1.1rem;align-content:start;max-width:34rem}
.lobby .lede{max-width:34ch;font-size:var(--t3)}
fieldset{border:0;padding:0;display:grid;gap:.4rem}
legend{font-weight:600;margin-bottom:.35rem}
.seg{display:flex;flex-wrap:wrap;gap:.4rem}
.seg button{flex:0 0 auto}
.lv{display:flex;gap:.25rem;flex-wrap:wrap}
.lv button{min-width:36px;min-height:36px;padding:0}
.hint{font-size:var(--t1);color:var(--ink-soft);max-width:60ch}
@media (min-width:900px){
  .lobby{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);align-items:center;min-height:100dvh;padding:2rem}
  .lobby .preview{width:min(100%,86dvh);justify-self:end}
}
@media (max-width:480px){
  .lobby{gap:.5rem;padding:max(.4rem,env(safe-area-inset-top)) .75rem 0}
  .lobby .preview{width:min(42vw,22vh);margin-inline:auto}
  .lobby h1{font-size:var(--t4)}
  .lobby .lede{font-size:var(--t2)}
  .lobby form{gap:.45rem}
  .lobby .actions{
    position:sticky;bottom:0;z-index:5;background:var(--dom);
    margin:0 -.75rem;padding:.5rem .75rem calc(.5rem + env(safe-area-inset-bottom));
    display:flex;gap:.4rem;
  }
  .lobby .actions button{flex:0 0 auto}
}

/* ---------- Play ---------- */
.play{min-height:100dvh;display:grid;grid-template-rows:auto;grid-auto-rows:max-content;align-content:start;gap:.5rem;padding:max(.5rem,env(safe-area-inset-top)) .5rem max(.75rem,env(safe-area-inset-bottom))}
.strip{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}
.turn{display:flex;align-items:center;gap:.45rem;font-weight:600;font-size:var(--t3)}
.dot{width:1.05rem;height:1.05rem;border-radius:50%;display:inline-block;flex:none}
.dot.b{background:var(--black)} .dot.w{background:var(--white);border:1.5px solid #cbb88f}
.caps{font-size:var(--t1);color:var(--ink-soft);display:flex;gap:.8rem;align-items:center}
.strip .push{margin-left:auto;display:flex;gap:.4rem}
.boardbox{position:relative;width:min(100%,calc(100dvh - 20rem),720px);justify-self:center}
.ended{position:absolute;left:.45rem;right:.45rem;bottom:.45rem;z-index:2;background:var(--dom);color:var(--ink);border:1.5px solid var(--ink);border-radius:var(--r);padding:.45rem .65rem;font-size:var(--t2)}
.ended[hidden]{display:none}
.readout{min-height:2.6em;font-size:var(--t2);max-width:65ch;justify-self:center;width:min(100%,720px)}
.readout .sig{font-weight:600}
.readout .sig.pos{color:var(--ink)} .readout .sig.neg{color:#a35a00}
.bar{display:flex;gap:.5rem;justify-content:center;flex-wrap:wrap}
.meter{display:inline-block;vertical-align:middle;width:6rem;height:.5rem;background:var(--rule);margin:0 .4rem;position:relative}
.meter i{position:absolute;inset:0 auto 0 0;background:var(--counter)}
.legend{order:5;font-size:var(--t1);color:var(--ink-soft);display:flex;gap:.9rem;flex-wrap:wrap;align-items:center}
.legend svg{width:14px;height:14px;vertical-align:-2px;margin-right:.25rem}
.result{font-size:var(--t3);font-weight:600}
.chip{display:inline-block;padding:.05rem .45rem;border-radius:var(--r);font-weight:600}
.chip.calm{background:var(--ink);color:var(--dom)}
.chip.mistake,.chip.blunder{background:var(--counter);color:var(--black)}
.chip.blunder{outline:2px solid var(--black)}
.coach{margin:.15rem 0}
@media (min-width:900px) and (min-aspect-ratio:5/4){
  .play{grid-template-columns:minmax(0,1fr) 19rem;grid-template-rows:1fr;align-items:center;padding:1rem;gap:1.5rem;height:100dvh}
  .boardbox{width:min(100%,calc(100dvh - 2rem));grid-row:1;grid-column:1;justify-self:end}
  .rail{grid-column:2;display:grid;gap:1rem;align-content:center;max-width:19rem}
  .rail .strip{flex-direction:column;align-items:flex-start}
  .rail .strip .push{margin-left:0}
  .bar{justify-content:flex-start}
}
@media not ((min-width:900px) and (min-aspect-ratio:5/4)){ .rail{display:contents} .rail .bar{order:4} }

/* ---------- Academy toggle ---------- */
.toggle{display:inline-flex;align-items:center;gap:.5rem;min-height:var(--tap);padding:0 .7rem}
.toggle .sw{width:2.1rem;height:1.2rem;border:1.5px solid currentColor;border-radius:var(--r);position:relative}
.toggle .sw::after{content:"";position:absolute;top:.12rem;left:.15rem;width:.8rem;height:.8rem;border-radius:50%;background:currentColor;transition:left .15s}
.toggle[aria-pressed="true"]{background:var(--ink);color:var(--dom)}
.toggle[aria-pressed="true"] .sw::after{left:.95rem;background:var(--counter)}

/* ---------- Bible ---------- */
.bible{max-width:1180px;margin:0 auto;padding:max(1rem,env(safe-area-inset-top)) 1rem 3rem;display:grid;gap:1.5rem}
.bible header{display:flex;gap:1rem;align-items:baseline;flex-wrap:wrap}
.bible nav{display:flex;gap:.35rem;overflow-x:auto;padding-bottom:.25rem;position:sticky;top:0;background:var(--dom);z-index:2}
.bible nav button{flex:none;font-size:var(--t1)}
.tier{display:grid;gap:.25rem}
.tier>.head{border-bottom:2px solid var(--ink);padding-bottom:.3rem;display:flex;gap:.75rem;align-items:baseline;flex-wrap:wrap}
.tier .size{font-size:var(--t1);color:var(--ink-soft)}
.entry{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.2rem 1rem;padding:.8rem 0;border-bottom:1px solid var(--rule)}
.entry p{max-width:62ch}
.entry .refs{font-size:var(--t1);color:var(--ink-soft)}
.entry .go{grid-column:2;grid-row:1/span 3;align-self:start}
.refs-list{font-size:var(--t1);color:var(--ink-soft);max-width:80ch;display:grid;gap:.25rem}
@media (min-width:900px){.bible{grid-template-columns:14rem minmax(0,1fr);align-items:start}.bible header{grid-column:1/-1}.bible nav{flex-direction:column;position:sticky;top:1rem}.bible nav button{text-align:left}}

.artifact{display:grid;grid-template-columns:minmax(0,9rem) minmax(0,1fr);gap:.75rem;align-items:start;margin:.5rem 0}
.artifact img{width:100%;height:auto;display:block}
.artifact figcaption{font-size:var(--t1);max-width:60ch}
.artifact a{color:var(--ink)}
.bar{display:flex;flex-wrap:wrap;gap:.5rem;min-width:0}
.bar button{min-height:36px;padding:.35em .65em}
.bar button{min-width:0}
.bar [hidden]{display:none}
.entry > :not(.go){grid-column:1}