:root{color-scheme:dark;--paper:#080808;--ink:#f5f0e5;--muted:#bdb49f;--gold:#d9bc78;--gold-soft:#f0d99b;--line:#51452d;--spring:cubic-bezier(.22,1.35,.42,1);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;min-height:100svh;background:radial-gradient(circle at 50% 25%,#2f261033,transparent 40%),#080808;-webkit-tap-highlight-color:transparent}button,a,input,select{touch-action:manipulation}button,input,select{font:inherit}button{color:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--gold-soft);outline-offset:3px}
.home-bar{position:sticky;top:0;z-index:30;display:flex;width:100%;min-height:calc(52px + env(safe-area-inset-top));align-items:center;justify-content:center;gap:10px;border-bottom:1px solid #f4dfa5;background:linear-gradient(110deg,#b18a38,#f0d98e 48%,#b18a38);color:#090806;padding-top:env(safe-area-inset-top);box-shadow:0 8px 28px #0009,inset 0 1px #fff8;font-size:.88rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase}.home-bar:before{content:"←";font-size:1.15rem;transition:transform .2s}.home-bar:hover:before{transform:translateX(-3px)}
.game-shell{width:min(100%,500px);height:calc(100svh - 52px - env(safe-area-inset-top));min-height:610px;margin-inline:auto;padding:14px 16px calc(8px + env(safe-area-inset-bottom));display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:11px}.game-identity{min-width:0;display:flex;flex-direction:column;gap:3px}.game-identity h1{margin:0;color:var(--gold);font:500 29px/1 Georgia,serif;letter-spacing:-1px;white-space:nowrap}.player-name{max-width:170px;overflow:hidden;color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.12em;text-overflow:ellipsis;text-transform:uppercase;white-space:nowrap}.player-name:empty{display:none}.top-actions{display:flex;gap:4px}.icon-button{display:grid;width:39px;height:39px;place-items:center;flex:0 0 39px;border:1px solid #554625;border-radius:50%;background:#15130e;color:#ecd59c;font-size:22px;line-height:1;transition:transform .25s var(--spring),background .2s}.icon-button:hover{background:#292319}.icon-button:active{transform:scale(.91)}.info-icon{font:italic 700 20px Georgia,serif}
.scorebar{display:grid;grid-template-columns:repeat(3,1fr);margin-bottom:9px;padding-bottom:8px;border-bottom:1px solid var(--line)}.scorebar>div{text-align:center;border-right:1px solid var(--line)}.scorebar>div:last-child{border:0}.scorebar span{display:block;color:var(--muted);font-size:10px;font-weight:750;letter-spacing:1.3px}.scorebar strong{font-size:22px;font-weight:550;font-variant-numeric:tabular-nums}.play-area{position:relative;display:flex;flex:1;min-height:0;flex-direction:column;align-items:center}.mode-line{display:flex;width:100%;justify-content:space-between;gap:12px;color:var(--gold-soft);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.mode-line span:last-child{color:var(--muted)}.message{min-height:21px;margin:5px 0 6px;color:#ddd3bd;text-align:center;font-size:14px;line-height:1.4}
.board-frame{width:min(100%,calc(100svh - 276px),468px);aspect-ratio:1;flex:0 0 auto;padding:clamp(6px,1.5vw,10px);border:1px solid #8a7138;border-radius:18px;background:linear-gradient(145deg,#342a16,#15130e 72%);box-shadow:0 20px 60px #000a,inset 0 1px #ffe5a53d}.board{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));grid-template-rows:repeat(8,minmax(0,1fr));width:100%;height:100%;overflow:hidden;contain:layout paint;border:1px solid #2e271b;border-radius:11px;background:#16130e;touch-action:none}.square{position:relative;display:grid;width:100%;height:100%;min-width:0;min-height:0;place-items:center;overflow:hidden;-webkit-appearance:none;appearance:none;border:0;border-radius:0;padding:0;line-height:1}.light-square{background:linear-gradient(145deg,#eee4d1,#d1c3a7)}.dark-square{background:linear-gradient(145deg,#a97d58,#7a583c);box-shadow:inset 0 0 0 1px #4b34231f}.square:not(:disabled):hover{filter:brightness(1.1)}.square:focus-visible{z-index:4;outline-offset:-4px}.square:disabled{cursor:default}.piece{position:relative;z-index:2;display:grid;width:88%;height:88%;place-items:center;opacity:0;transform:scale(.5);font:clamp(29px,9.5vw,51px)/1 "Arial Unicode MS","Noto Sans Symbols 2",serif;transition:transform .25s var(--spring),opacity .14s;-webkit-user-select:none;user-select:none}.has-piece .piece{opacity:1;transform:scale(1)}.is-white .piece{color:#f7eed9;text-shadow:-1px -1px 0 #4a3828,1px -1px 0 #4a3828,-1px 1px 0 #4a3828,1px 1px 0 #4a3828,0 2px 2px #0007}.is-black .piece{color:#101114;text-shadow:0 1px 0 #ffffff2b,0 2px 2px #0008}.is-selected{box-shadow:inset 0 0 0 3px #f4dda2}.is-selected .piece{transform:scale(.9)}.is-target:after{content:"";position:absolute;z-index:3;width:25%;aspect-ratio:1;border:2px solid #fff4bf;border-radius:50%;background:#d9bc78;animation:target 1s ease-in-out infinite}.is-capture-target:after{width:72%;background:transparent;border-width:4px}.rank,.file{position:absolute;z-index:1;color:#5f452f;font:800 clamp(6px,1.8vw,10px)/1 system-ui}.dark-square .rank,.dark-square .file{color:#f4e4bd}.rank{top:4px;left:4px}.file{right:4px;bottom:3px}
.board-status{display:flex;align-items:center;justify-content:center;gap:28px;min-height:30px;margin-top:7px;color:var(--muted);font-size:9px;letter-spacing:.12em}.board-status span{display:flex;align-items:center;gap:6px}.board-status b{font:inherit}.board-status strong{min-width:18px;color:var(--ink);font-size:12px;text-align:center}.mini-piece{font:23px/1 Georgia,serif}.white-piece{color:#f7eed9;text-shadow:0 1px #4a3828}.black-piece{color:#101114;text-shadow:-1px -1px 0 #8d684a,1px -1px 0 #8d684a,-1px 1px 0 #8d684a,1px 1px 0 #8d684a}.thinking{display:flex;min-height:20px;align-items:center;gap:5px;color:var(--muted);font-size:10px;font-weight:750;letter-spacing:.05em;text-transform:uppercase}.thinking span{width:5px;height:5px;border-radius:50%;background:var(--gold);animation:thinking 1s infinite ease-in-out}.thinking span:nth-child(2){animation-delay:.14s}.thinking span:nth-child(3){animation-delay:.28s}.thinking b{margin-left:4px;font:inherit}.ad-reservation{display:grid;min-height:30px;place-items:center;margin-top:5px;border:1px dashed #41371f;border-radius:9px;color:#6e6759;font-size:8px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
dialog{width:min(calc(100% - 28px),430px);max-height:calc(100dvh - 28px);margin:auto;overflow:auto;border:1px solid #9a7b3b;border-radius:20px;background:linear-gradient(145deg,#191713,#090909 70%);color:var(--ink);padding:22px;box-shadow:0 32px 110px #000e}dialog::backdrop{background:#000c;backdrop-filter:blur(8px)}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px}.dialog-top h2,dialog h2{margin:0;color:var(--gold-soft);font:400 31px/1.05 Georgia,serif}.dialog-top .eyebrow{margin:0}.dialog-top .icon-button{width:38px;height:38px;font-size:17px}.field-label{display:block;margin-bottom:9px;color:var(--gold-soft);font-size:13px;font-weight:800;letter-spacing:.04em}select{width:100%;min-height:47px;margin-bottom:7px;border:1px solid #6e5c35;border-radius:10px;background:#10100f;color:var(--ink);padding:8px 11px}.settings-note{margin:0 0 10px;color:var(--muted);font-size:12px;line-height:1.5}.second-field{margin-top:14px}.switch-row{display:flex;min-height:51px;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);font-size:14px;cursor:pointer}.switch-row input{appearance:none;position:relative;width:40px;height:24px;margin:0;flex:0 0 40px;border:1px solid #8e836d;border-radius:20px;background:#39372f}.switch-row input:before{content:"";position:absolute;width:16px;height:16px;top:3px;left:3px;border-radius:50%;background:#f5f0e5;transition:transform .2s}.switch-row input:checked{background:var(--gold);border-color:var(--gold)}.switch-row input:checked:before{transform:translateX(16px);background:#111}.primary-button{display:flex;width:100%;min-height:49px;align-items:center;justify-content:center;border:1px solid var(--gold);border-radius:11px;background:var(--gold);color:#0a0906;font-weight:800}.primary-button:hover{background:var(--gold-soft)}#settings-form>.primary-button{margin-top:16px}.secondary-button{min-height:48px;border:1px solid #8f7543;border-radius:10px;background:transparent;padding:8px 12px}.dialog-buttons{display:flex;gap:8px;margin-top:22px}.dialog-buttons .primary-button{flex:1}.eyebrow{margin:0 0 9px;color:var(--gold);font-size:12px;font-weight:800;letter-spacing:1.5px}.record-panel{padding:14px;border:1px solid #4e422a;border-radius:12px;background:#090909}.record-grid{display:grid;grid-template-columns:1fr auto;gap:9px;color:#c9c0ae;font-size:13px}.record-grid strong{color:var(--gold-soft);font-size:14px;text-align:right}.dialog-note{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.5}.rules h3{margin:22px 0 8px;color:var(--gold-soft);font:400 24px/1.1 Georgia,serif}.rules p,dialog>p{color:#d6cebd;font-size:14px;line-height:1.55}.control-rule{display:flex;align-items:flex-start;gap:12px;margin:12px 0}.control-rule p{margin:5px 0}.control-symbol{flex:0 0 36px;height:36px;display:grid;place-items:center;border:1px solid #554625;border-radius:50%;background:#15130e;color:#ecd59c;font-size:22px}.sound-muted{opacity:.55}.info-control{font:italic 700 18px Georgia,serif}
.promotion-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}.promotion-grid button{display:flex;min-height:96px;align-items:center;justify-content:center;flex-direction:column;gap:4px;border:1px solid #6e5b35;border-radius:13px;background:#15130e;color:var(--gold-soft)}.promotion-grid button:hover{background:#292319}.promotion-grid span{font:43px/1 Georgia,serif}.promotion-grid b{font-size:12px}.result-dialog{text-align:center}.result-piece{display:grid;width:82px;height:82px;margin:8px auto 16px;place-items:center;border:1px solid #d1ad79;border-radius:50%;background:linear-gradient(135deg,#f1ddb8,#b38655);box-shadow:0 5px 0 #805a35,0 0 35px #d9bc7844;color:#4b2d1d;font:54px/1 Georgia,serif}.black-result{border-color:#6a3f2d;background:linear-gradient(135deg,#76503f,#2d1a18);box-shadow:0 5px 0 #21110f,0 0 35px #6f493e66;color:#ead2a4}.draw-result{background:linear-gradient(135deg,#e7cfaa 50%,#513129 50%)}.result-dialog h2{font-size:36px}.result-dialog .primary-button{margin-top:20px}.reduced-motion *,.reduced-motion *:before,.reduced-motion *:after{animation:none!important;transition-duration:.01ms!important}
@keyframes target{50%{transform:scale(.72);opacity:.7}}@keyframes thinking{0%,80%,100%{transform:translateY(0);opacity:.4}40%{transform:translateY(-4px);opacity:1}}
@media(max-width:450px){.game-identity h1{font-size:24px}}@media(max-width:375px){.game-shell{padding-inline:10px}.game-identity h1{font-size:22px}.top-actions{gap:2px}.icon-button{width:36px;flex-basis:36px}.board-frame{width:min(100%,calc(100svh - 270px));padding:5px}.message{font-size:13px}.board-status{margin-top:4px}}
@media(max-height:720px){.game-shell{min-height:535px;padding-top:7px}.topbar{margin-bottom:7px}.scorebar{margin-bottom:5px;padding-bottom:5px}.message{margin-block:3px 4px}.board-frame{width:min(100%,calc(100svh - 240px),420px)}.board-status{min-height:24px;margin-top:3px}.ad-reservation{min-height:24px}}
@media(min-width:700px) and (orientation:portrait){.game-shell{width:min(100%,790px);padding:24px 34px 14px}.game-identity h1{font-size:43px}.topbar{margin-bottom:20px}.icon-button{width:46px;height:46px;flex-basis:46px}.scorebar span{font-size:12px}.scorebar strong{font-size:30px}.mode-line{font-size:14px}.message{font-size:17px;margin:10px 0 13px}.board-frame{width:min(86vw,690px,calc(100svh - 410px));padding:13px;border-radius:25px}.piece{font-size:clamp(46px,9vw,70px)}.board-status{font-size:12px;gap:38px;margin-top:12px}.mini-piece{font-size:30px}.board-status strong{font-size:15px}.thinking{font-size:13px;min-height:27px}.ad-reservation{min-height:42px}}
@media(min-width:800px) and (orientation:landscape){.game-shell{width:min(100%,980px);display:grid;grid-template-columns:260px minmax(0,1fr);grid-template-rows:auto auto 1fr auto;column-gap:32px}.topbar{grid-column:1/-1}.scorebar{grid-column:1;align-self:start;margin-top:60px;grid-template-columns:1fr}.scorebar>div{padding:12px;border-right:0;border-bottom:1px solid var(--line)}.scorebar>div:last-child{border:0}.play-area{grid-column:2;grid-row:2/5}.board-frame{width:min(64vh,560px)}.ad-reservation{grid-column:1;grid-row:4;align-self:end}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition-duration:.01ms!important}}.preview-capture .home-bar{display:none}.preview-capture .game-shell{height:100svh}.board-frame,.board,.board .square,.board .piece{touch-action:none;-webkit-user-select:none;user-select:none}.piece,.mini-piece,.promotion-grid span,.result-piece,.moving-piece{font-family:"Times New Roman","Apple Symbols",Georgia,serif;font-variant-emoji:text}.board{position:relative}.moving-piece{position:absolute;z-index:12;display:grid;place-items:center;pointer-events:none;font-size:clamp(29px,9.5vw,51px);line-height:1;will-change:transform;-webkit-user-select:none;user-select:none}.moving-white{color:#f7eed9;text-shadow:-1px -1px 0 #4a3828,1px -1px 0 #4a3828,-1px 1px 0 #4a3828,1px 1px 0 #4a3828,0 2px 2px #0007}.moving-black{color:#101114;text-shadow:0 1px 0 #ffffff2b,0 2px 2px #0008}@media(min-width:700px) and (orientation:portrait){.moving-piece{font-size:clamp(46px,9vw,70px)}}