:root{color-scheme:dark;--bg:#111714;--surface:#19211d;--surface-2:#202a24;--line:#303a32;--text:#edf2e8;--muted:#98a596;--accent:#c8e6ad;--accent-ink:#1c3524;--light-square:#c3d1b7;--dark-square:#698674;--selected:#d1b66c;--hint:#7bc5a0;--danger:#ee9d94;font-family:Inter,"Segoe UI",Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);min-width:320px}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;border:0}button:disabled{cursor:default;opacity:.4}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button,select,input,textarea{border-radius:9px}svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}a{color:inherit;text-decoration:none}[hidden]{display:none!important}.icon-library{position:absolute;width:0;height:0;overflow:hidden}.site-header{max-width:1440px;padding:22px 44px;margin:auto;display:flex;align-items:center;gap:24px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:12px;align-items:center;font-size:21px;font-weight:650;letter-spacing:-.7px}.brand img{display:block}.brand-light{font-weight:350;color:#bac8b5}.brand small{display:block;font-size:9px;letter-spacing:2.5px;font-weight:600;color:var(--muted);margin-top:2px}.connection{margin-left:auto;display:flex;align-items:center;gap:9px;font-size:12px;color:var(--muted)}.connection-dot{width:6px;height:6px;background:var(--accent);border-radius:50%;box-shadow:0 0 0 4px #c8e6ad0b}.connection-dot.error{background:var(--danger)}.local-tag{font-size:8px;letter-spacing:1px;padding:4px 5px;border:1px solid var(--line);margin-left:5px;border-radius:4px}.icon-button{display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--line);background:transparent;color:var(--muted)}.icon-button:hover{background:var(--surface-2);color:var(--text)}.app-shell{max-width:1332px;margin:0 auto;padding:36px 36px 20px}.workspace-header{display:flex;gap:24px;justify-content:space-between;align-items:center;margin-bottom:30px}.eyebrow{color:var(--accent);letter-spacing:2.1px;font-size:9px;font-weight:650;margin:0 0 10px}h1{font-size:clamp(23px,2.4vw,33px);font-weight:500;letter-spacing:-1px;margin:0 0 9px;line-height:1.2}.page-subtitle{font-size:12px;line-height:1.6;color:var(--muted);margin:0}.mode-switch{display:flex;background:#0c120f;border:1px solid var(--line);padding:5px;border-radius:11px;gap:3px;flex-shrink:0}.mode-switch button{background:transparent;color:var(--muted);padding:10px 17px;font-size:12px;white-space:nowrap;border-radius:7px}.mode-switch button.active{background:var(--surface-2);color:var(--accent);box-shadow:0 1px 5px #0003}.mode-switch button:hover{color:var(--text)}.game-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:25px;align-items:start}.board-card{border:1px solid var(--line);border-radius:15px;background:var(--surface);overflow:hidden}.board-header{display:flex;align-items:center;justify-content:space-between;padding:19px 24px;border-bottom:1px solid var(--line);gap:12px}.turn-status{display:flex;gap:9px;align-items:center;font-size:12px}.turn-status strong{font-weight:500}.turn-dot{border-radius:50%;width:10px;height:10px;background:#e9eee5;box-shadow:0 0 0 1px #ffffff25}.turn-dot.black{background:#1a201d;box-shadow:0 0 0 1px #8a9887}.move-counter{font-size:9px;letter-spacing:1px;color:var(--muted);white-space:nowrap}.thinking{width:12px;height:12px;border-radius:50%;border:1.5px solid #c8e6ad38;border-top-color:var(--accent);animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.board-area{display:flex;gap:19px;padding:24px 26px 12px 22px;align-items:stretch}.eval-wrapper{width:21px;flex-shrink:0;display:flex;flex-direction:column;position:relative}.eval-score{font-size:9px;position:absolute;top:-17px;left:50%;transform:translateX(-50%);color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.eval-track{position:relative;background:#101411;border:1px solid #435044;border-radius:4px;width:10px;height:calc(100% - 25px);overflow:hidden;margin:0 auto}.eval-white{height:50%;width:100%;background:#dce6d4;position:absolute;bottom:0;transition:height .3s}.eval-wrapper.flipped .eval-white{top:0;bottom:auto}.eval-middle{position:absolute;top:50%;left:0;right:0;height:1px;background:#7b8878}.board-with-coordinates{flex:1;min-width:0}.board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;border-radius:5px;overflow:hidden;width:100%;box-shadow:0 4px 16px #0002;touch-action:manipulation}.square{display:grid;place-items:center;aspect-ratio:1;border-radius:0;position:relative;padding:0;background:var(--light-square);user-select:none;outline-offset:-3px!important}.square.dark{background:var(--dark-square)}.square.last{background:#b9a860}.square.suggested{background:var(--hint)}.square.selected{background:var(--selected)}.square.check{background:#b65e5a}.square:hover{filter:brightness(1.05)}.square[data-rank]::before{content:attr(data-rank);position:absolute;left:5px;top:4px;font-size:10px;color:#20372bd0;line-height:1;font-family:"Segoe UI",sans-serif;font-weight:650}.square.dark[data-rank]::before{color:#e7eee0b5}.piece{font-family:"Segoe UI Symbol","DejaVu Sans",serif;line-height:1;font-size:clamp(26px,4.3vw,61px);position:relative;z-index:1;cursor:grab;display:block;padding-bottom:2px}.piece.white{color:#f6f7ed;text-shadow:0 1px 1px #28382d,-1px 0 #435341,1px 0 #435341,0 -1px #435341}.piece.black{color:#16271e;text-shadow:0 1px 0 #d3dcd04d}.square.legal::after{content:"";position:absolute;border-radius:50%;width:25%;height:25%;background:#152e2350}.square.legal.capture::after{width:85%;height:85%;background:transparent;border:3px solid #283f2970;z-index:2}.file-labels{display:grid;grid-template-columns:repeat(8,1fr);height:25px;align-items:end;color:var(--muted);font-size:10px;text-align:center}.board-toolbar{padding:12px 22px 15px;display:flex;gap:6px;border-top:1px solid var(--line);align-items:center}.toolbar-button{background:transparent;display:flex;gap:7px;align-items:center;font-size:11px;color:var(--muted);padding:9px 10px}.toolbar-button:hover{background:var(--surface-2);color:var(--text)}.toolbar-button svg{width:15px;height:15px}.toolbar-spacer{flex:1}.side-panel{display:flex;flex-direction:column;gap:16px}.panel{border:1px solid var(--line);border-radius:13px;background:var(--surface);padding:21px}.panel-heading{display:flex;gap:9px;align-items:center}.panel h2{font-size:13px;font-weight:550;letter-spacing:-.15px;margin:0}.section-icon{display:flex;color:var(--accent)}.section-icon svg{width:16px;height:16px}.tiny-pill{font-size:8px;letter-spacing:.8px;padding:4px 5px;border:1px solid var(--line);border-radius:4px;color:var(--muted);margin-left:auto;white-space:nowrap}.panel-intro{font-size:11px;color:var(--muted);line-height:1.6;margin:11px 0 19px}.suggestions{display:flex;flex-direction:column;gap:7px}.suggestion{display:flex;align-items:center;text-align:left;gap:11px;width:100%;padding:12px;border:1px solid var(--line);background:transparent}.suggestion.active{border-color:#8fae7c7a;background:#c8e6ad08}.suggestion:hover{border-color:#a7be9380}.suggestion-index{display:grid;place-items:center;font-size:10px;color:var(--muted);background:var(--surface-2);width:23px;height:23px;border-radius:6px;flex-shrink:0}.suggestion.active .suggestion-index{background:var(--accent);color:var(--accent-ink)}.suggestion-move{font-family:Consolas,monospace;font-size:16px;letter-spacing:-.3px;font-weight:600}.suggestion-note{font-size:9px;color:var(--muted);display:block;margin-top:3px;font-family:"Segoe UI",sans-serif;font-weight:400;letter-spacing:0}.suggestion-score{font-size:12px;color:var(--accent);margin-left:auto;white-space:nowrap;font-variant-numeric:tabular-nums}.variation{color:var(--muted);font-family:Consolas,monospace;font-size:10px;line-height:1.7;padding:11px 0 0}.primary-button{background:var(--accent);color:var(--accent-ink);padding:13px 15px;display:flex;justify-content:space-between;align-items:center;width:100%;font-size:11px;font-weight:650;margin-top:17px}.primary-button:hover{background:#dbefc9}.primary-button:disabled{opacity:.35}.primary-button svg{width:15px;height:15px}.empty-state{color:var(--muted);font-size:11px;line-height:1.8;margin:4px 0}.history{max-height:180px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--line) transparent;margin-top:14px}.history-row{display:grid;grid-template-columns:35px 1fr 1fr;gap:8px;padding:8px 9px;border-radius:5px;font-size:12px;font-family:Consolas,monospace}.history-row:nth-child(odd){background:#ffffff03}.history-row .number{color:#788775;font-size:10px;align-self:center}.history-row .last-san{color:var(--accent)}.input-panel{padding:18px 20px}.material-pill{font-size:8px;color:var(--muted);margin-left:auto}.input-row{display:flex;position:relative;margin-top:14px}input,textarea,select{background:#111914;border:1px solid var(--line);color:var(--text);padding:12px;font-size:11px;width:100%}select{appearance:auto;cursor:pointer}input::placeholder,textarea::placeholder{color:#748371}.input-row input{padding-right:43px;min-width:0}.input-submit{position:absolute;right:4px;top:4px;bottom:4px;display:grid;place-items:center;background:var(--surface-2);width:32px;color:var(--accent);border-radius:6px}.input-submit svg{width:15px;height:15px}.fen-actions{display:flex;justify-content:space-between;gap:12px;margin-top:8px}.text-button{background:transparent;font-size:10px;padding:6px 0;color:var(--accent);display:inline-flex;align-items:center;gap:6px}.text-button svg{width:12px;height:12px}.text-button:hover{color:#e4f1d8}.new-game-buttons{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-bottom:20px}.new-game{background:var(--surface-2);border:1px solid var(--line);padding:13px 6px;font-size:10px;display:flex;align-items:center;gap:6px;justify-content:center}.new-game:hover{border-color:#879d78}.new-game span{font-family:"Segoe UI Symbol",serif;font-size:23px}.field-label{font-size:10px;color:var(--muted);display:block;margin:17px 0 9px}.scoreboard{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin-top:20px;text-align:center}.scoreboard div{display:flex;flex-direction:column;gap:7px}.scoreboard strong{font-size:25px;font-weight:450}.scoreboard span{font-size:8px;letter-spacing:1.5px;color:var(--muted)}.bot-actions{display:flex;justify-content:space-between;margin-top:10px}.muted{color:var(--muted)}.small{font-size:10px;line-height:1.7}.feedback{font-size:11px;padding:11px 13px;border:1px solid #c8e6ad28;background:#c8e6ad08;border-radius:7px;margin-top:13px;color:var(--accent)}.feedback.bad{border-color:#ee9d9433;color:var(--danger);background:#ee9d9409}.secondary-button{display:flex;align-items:center;justify-content:space-between;width:100%;font-size:11px;color:var(--accent);border:1px solid var(--line);padding:12px;background:transparent}.notice{border:1px solid #ee9d9438;background:#ee9d9410;padding:13px 18px;border-radius:9px;font-size:12px;line-height:1.6;color:#efb3aa;margin-top:18px}.notice.success{border-color:#c8e6ad38;background:#c8e6ad08;color:var(--accent)}footer{display:flex;justify-content:space-between;color:#748271;font-size:10px;padding:23px 2px 4px;gap:15px;line-height:1.7}dialog{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:16px;padding:27px;width:min(450px,calc(100% - 32px));box-shadow:0 22px 80px #0006}dialog::backdrop{background:#080e0ad4;backdrop-filter:blur(5px)}.dialog-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:15px}.dialog-heading h2{font-size:19px;font-weight:500;letter-spacing:-.5px;margin:0}.dialog-close{background:transparent;color:var(--muted);font-size:26px;line-height:1;padding:0 4px}.dialog-close:hover{color:var(--text)}dialog .muted{font-size:12px;line-height:1.6}textarea{resize:vertical;line-height:1.8;margin-top:8px;font-family:Consolas,monospace}.checkbox-field{font-size:12px;display:flex;align-items:center;gap:11px;margin:22px 0}.checkbox-field input{width:16px;height:16px;accent-color:var(--accent)}.settings-note{font-size:10px;line-height:1.7;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin:22px 0 0}.promotion-choices{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.promotion-choices button{background:var(--surface-2);border:1px solid var(--line);padding:14px 4px;color:var(--text)}.promotion-choices span{display:block;font:36px "Segoe UI Symbol",serif;margin-bottom:10px}.promotion-choices small{font-size:10px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
body[data-mode=bot] .helper-only,body:not([data-mode=bot]) .bot-only,body:not([data-mode=puzzle]) .puzzle-only{display:none!important}body[data-mode=puzzle] #analysis-panel,body[data-mode=puzzle] .input-panel,body[data-mode=puzzle] .eval-wrapper{display:none!important}body[data-mode=bot] .board-area,body[data-mode=puzzle] .board-area{padding-left:26px}body[data-theme=slate]{--light-square:#a4b9c5;--dark-square:#55788c;--hint:#71cbb7}body[data-theme=wood]{--light-square:#ceb08c;--dark-square:#8c694c;--hint:#9dcb9a}body[data-theme=neon]{--light-square:#7859a2;--dark-square:#40305c;--hint:#5bc4b3}.hide-history .history-panel{display:none}.hide-feedback #feedback{display:none!important}.hide-check .square.check:not(.selected){background:var(--dark-square)}.hide-check .square.check:not(.dark):not(.selected){background:var(--light-square)}
@media(min-width:1500px){.app-shell{padding-top:43px}.workspace-header{margin-bottom:34px}}@media(max-width:1050px){.site-header{padding:19px 26px}.app-shell{padding:28px 24px 16px}.game-layout{gap:18px;grid-template-columns:minmax(0,1fr) 300px}.panel{padding:18px}.workspace-header{align-items:flex-start}.mode-switch button{padding:9px 12px}.board-area{padding:22px 18px 9px 15px;gap:12px}.piece{font-size:4.15vw}.board-header{padding:17px 18px}.move-counter{font-size:8px}.board-toolbar{padding:10px}.toolbar-button{padding:8px;font-size:10px}}@media(max-width:800px){.workspace-header{display:block;margin-bottom:22px}.mode-switch{display:inline-flex;margin-top:23px}.mode-switch button{padding:10px 22px}.game-layout{grid-template-columns:minmax(0,1fr)}.side-panel{display:grid;grid-template-columns:1fr 1fr;align-items:start}.piece{font-size:8vw}.input-panel{grid-column:2;grid-row:1}.history-panel{grid-column:2;grid-row:2}#analysis-panel{grid-column:1;grid-row:1/span 2}.bot-only{grid-column:1;grid-row:1/span 2}.puzzle-only{grid-column:1;grid-row:1/span 2}.board-area{padding:24px 25px 10px 20px;gap:18px}.board-toolbar{padding:11px 15px}.toolbar-button{font-size:12px}.board-header{padding:18px 22px}.move-counter{font-size:9px}footer{font-size:9px}.connection{font-size:11px}.site-header{gap:15px}.desktop-hint{display:none}}@media(max-width:520px){.site-header{padding:17px 18px}.brand{font-size:19px;gap:9px}.brand img{width:34px;height:34px}.brand small{font-size:8px}.connection{margin-left:auto;font-size:9px;gap:6px}.local-tag{display:none}.connection-dot{width:5px;height:5px}.icon-button{width:31px;height:31px}.app-shell{padding:26px 14px 12px}.workspace-header{padding:0 4px}h1{font-size:26px;max-width:300px}.page-subtitle{font-size:11px;max-width:330px}.mode-switch{display:flex;justify-content:stretch}.mode-switch button{flex:1;padding:10px 12px}.game-layout{gap:15px}.board-header{padding:16px 17px}.turn-status{font-size:10px}.move-counter{font-size:8px}.board-area{padding:22px 12px 8px 10px;gap:9px}.eval-wrapper{width:15px}.eval-track{width:7px}.eval-score{font-size:8px}.piece{font-size:9.2vw}.square[data-rank]::before{font-size:8px;left:3px;top:3px}.board-toolbar{padding:9px 10px}.toolbar-button{font-size:11px}.side-panel{display:flex;gap:15px}.panel{padding:20px}.history-panel{order:2}.input-panel{order:3}.suggestion{padding:12px 13px}.suggestion-move{font-size:17px}.panel-intro{font-size:11px}.panel h2{font-size:14px}footer{display:block;padding-top:20px}footer span{display:block}.board-area .eval-wrapper{margin-left:1px}body[data-mode=bot] .board-area,body[data-mode=puzzle] .board-area{padding-left:12px}}
.site-header>.icon-button{margin-left:auto}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition:none!important}}