.tool-chess-ai,.chs-welcome,.chs-settings,.chs-dialog,.chs-promo,.chs-toast{--chs-line: var(--color-gray-light-medium, #e2e4ea);--chs-muted: var(--color-gray-medium, #888);--chs-panel: var(--color-white, #fff);--chs-soft: var(--color-gray-lighter, #f6f7f9);--chs-inset: #f4f5f8;--chs-accent: var(--color-purple, #5632a0);--chs-danger: #b3261e;--chs-ok: #1f9254;--chs-sq-light: #ece3d2;--chs-sq-dark: #7b64a6;--chs-white-piece: #f8f5ef;--chs-white-stroke: #23262e;--chs-black-piece: #23262e;--chs-radius: 14px;--chs-shadow: 0 12px 34px rgba(var(--color-dark-rgb, 18 20 29), .07);--chs-mono: "SF Mono", "Fira Code", "JetBrains Mono", ui-monospace, monospace;--chs-dark: var(--color-dark, #12141d)}.tool-chess-ai,.tool-chess-ai *,.tool-chess-ai *::before,.tool-chess-ai *::after,.chs-welcome,.chs-welcome *,.chs-welcome *::before,.chs-welcome *::after,.chs-settings,.chs-settings *,.chs-settings *::before,.chs-settings *::after,.chs-dialog,.chs-dialog *,.chs-dialog *::before,.chs-dialog *::after,.chs-promo,.chs-promo *,.chs-promo *::before,.chs-promo *::after,.chs-toast,.chs-toast *,.chs-toast *::before,.chs-toast *::after{box-sizing:border-box}.tool-chess-ai{color:var(--chs-dark)}.tool-chess-ai .chs{border:1px solid var(--chs-line);border-radius:var(--chs-radius);background-color:var(--chs-panel);box-shadow:var(--chs-shadow);padding:18px}.tool-chess-ai .chs-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid var(--chs-line)}.tool-chess-ai .chs-mode{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700}.tool-chess-ai .chs-mode__dot{width:9px;height:9px;border-radius:50%;background:var(--chs-accent)}.tool-chess-ai .chs-toolbar__actions{display:flex;flex-wrap:wrap;gap:8px}.tool-chess-ai .chs-main{display:grid;grid-template-columns:minmax(0, 1fr) 300px;gap:20px;align-items:start}.tool-chess-ai .chs-board-col{display:flex;flex-direction:column;align-items:center;gap:12px}.tool-chess-ai .chs-scores{display:flex;gap:18px;flex-wrap:wrap;justify-content:center;font-size:13px}.tool-chess-ai .chs-score{display:inline-flex;align-items:center;gap:7px}.tool-chess-ai .chs-score__disc{width:14px;height:14px;border-radius:50%;border:1px solid rgba(var(--color-dark-rgb, 18 20 29), 0.25)}.tool-chess-ai .chs-score--white .chs-score__disc{background:var(--chs-white-piece)}.tool-chess-ai .chs-score--black .chs-score__disc{background:var(--chs-black-piece)}.tool-chess-ai .chs-score__player{color:var(--chs-muted);font-family:var(--chs-mono);font-size:11px}.tool-chess-ai .chs-status{min-height:22px;margin:0;font-size:14px;font-weight:600;text-align:center;color:var(--chs-muted)}.tool-chess-ai .chs-status.is-thinking{color:var(--chs-accent);animation:chs-pulse 1.3s ease-in-out infinite}.tool-chess-ai .chs-status.is-finished{color:var(--chs-dark);font-size:17px}@keyframes chs-pulse{0%,100%{opacity:1}50%{opacity:.5}}.tool-chess-ai .chs-board{width:100%;max-width:520px}.tool-chess-ai .chs-grid{display:grid;grid-template-columns:20px repeat(8, 1fr) 20px;align-items:center;border-radius:10px;overflow:hidden;border:2px solid var(--chs-sq-dark);background:var(--chs-sq-dark)}.tool-chess-ai .chs-corner{aspect-ratio:1}.tool-chess-ai .chs-flabel,.tool-chess-ai .chs-rlabel{display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--chs-muted);background:var(--chs-panel);height:20px}.tool-chess-ai .chs-rlabel{height:auto;align-self:stretch}.tool-chess-ai .chs-sq{position:relative;aspect-ratio:1;border:none;padding:0;margin:0;display:flex;align-items:center;justify-content:center;cursor:default;background:var(--chs-sq-light)}.tool-chess-ai .chs-sq--dark{background:var(--chs-sq-dark)}.tool-chess-ai .chs-sq.is-last::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 3px rgba(var(--color-purple-rgb), 0.7);pointer-events:none}.tool-chess-ai .chs-sq.is-check{background:#e6837e}.tool-chess-ai .chs-sq.is-check.chs-sq--dark{background:#c15c73}.tool-chess-ai .chs-piece{line-height:1;font-size:clamp(22px,6.4vw,44px);-webkit-user-select:none;-moz-user-select:none;user-select:none;transition:transform .12s ease}.tool-chess-ai .chs-piece.is-white{color:var(--chs-white-piece);-webkit-text-stroke:1.4px var(--chs-white-stroke);text-shadow:0 1px 2px rgba(0,0,0,.35)}.tool-chess-ai .chs-piece.is-black{color:var(--chs-black-piece);text-shadow:0 1px 2px hsla(0,0%,100%,.25)}.tool-chess-ai .chs-sq.is-playable{cursor:pointer}.tool-chess-ai .chs-sq.is-playable .chs-piece.is-shown{transform:scale(1.04);filter:drop-shadow(0 0 4px rgba(var(--color-purple-rgb), 0.7))}.tool-chess-ai .chs-sq.is-selected{cursor:pointer;box-shadow:inset 0 0 0 3px var(--chs-accent)}.tool-chess-ai .chs-sq.is-target{cursor:pointer}.tool-chess-ai .chs-sq.is-target::before{content:"";position:absolute;width:30%;height:30%;border-radius:50%;background:rgba(var(--color-purple-rgb), 0.5);pointer-events:none}.tool-chess-ai .chs-sq.is-target:has(.chs-piece.is-shown)::before{width:82%;height:82%;border-radius:8px;background:rgba(0,0,0,0);box-shadow:inset 0 0 0 3px rgba(var(--color-purple-rgb), 0.55)}.tool-chess-ai.is-human-turn .chs-sq.is-playable,.tool-chess-ai.is-human-turn .chs-sq.is-target{cursor:pointer}.tool-chess-ai .chs-underboard{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--chs-muted)}.tool-chess-ai .chs-live{color:var(--chs-danger);font-weight:700;letter-spacing:.04em}.tool-chess-ai .chs-controls{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.tool-chess-ai .chs-log-col{display:flex;flex-direction:column;border:1px solid var(--chs-line);border-radius:12px;background:var(--chs-soft);overflow:hidden}.tool-chess-ai .chs-log-head{padding:12px 14px;border-bottom:1px solid var(--chs-line)}.tool-chess-ai .chs-log-title{margin:0 0 3px;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.04em}.tool-chess-ai .chs-log-caps{font-size:11px;color:var(--chs-muted)}.tool-chess-ai .chs-log{height:360px;overflow-y:auto;padding:8px;display:flex;flex-direction:column;gap:2px}.tool-chess-ai .chs-log__empty{margin:8px;font-size:12px;font-style:italic;color:var(--chs-muted)}.tool-chess-ai .chs-log__row{display:flex;align-items:center;gap:8px;padding:3px 6px;border-radius:6px;font-size:13px}.tool-chess-ai .chs-log__row:hover{background:rgba(var(--color-dark-rgb, 18 20 29), 0.04)}.tool-chess-ai .chs-log__num{width:26px;text-align:right;font-size:11px;color:var(--chs-muted)}.tool-chess-ai .chs-log__dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;border:1px solid rgba(var(--color-dark-rgb, 18 20 29), 0.2)}.tool-chess-ai .chs-log__dot.is-white{background:var(--chs-white-piece)}.tool-chess-ai .chs-log__dot.is-black{background:var(--chs-black-piece)}.tool-chess-ai .chs-log__not{font-family:var(--chs-mono);font-size:12px}.tool-chess-ai .chs-log__cap{color:var(--chs-danger);font-size:11px;font-weight:600}.tool-chess-ai .chs-log__chk{color:var(--chs-accent);font-size:12px;font-weight:700}@media(max-width: 900px){.tool-chess-ai .chs-main{grid-template-columns:1fr}.tool-chess-ai .chs-log-col{order:2}.tool-chess-ai .chs-log{height:220px}}.chs-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:40px;padding:0 16px;border:1px solid var(--chs-line);border-radius:10px;background-color:var(--chs-panel);color:var(--chs-dark);font-size:14px;font-weight:600;line-height:1;cursor:pointer;transition:border-color .15s ease,background-color .15s ease,color .15s ease}.chs-btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.chs-btn:hover{border-color:rgba(var(--color-purple-rgb), 0.5);color:var(--chs-accent)}.chs-btn:focus-visible{outline:2px solid var(--chs-accent);outline-offset:2px}.chs-btn[hidden]{display:none}.chs-btn--primary{border-color:var(--chs-accent);background-color:var(--chs-accent);color:var(--color-white, #fff)}.chs-btn--primary:hover{background-color:color-mix(in srgb, var(--chs-accent) 88%, #000);border-color:rgba(0,0,0,0);color:var(--color-white, #fff)}.chs-btn--danger{border-color:var(--chs-danger);color:var(--chs-danger)}.chs-btn--danger:hover{background-color:var(--chs-danger);border-color:var(--chs-danger);color:#fff}.chs-field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px}.chs-field[hidden]{display:none}.chs-field label{font-size:13px;font-weight:600;color:var(--chs-dark)}.chs-field select,.chs-field input[type=text],.chs-field input[type=password]{width:100%;height:40px;padding:0 12px;border:1px solid var(--chs-line);border-radius:9px;background-color:var(--chs-panel);color:var(--chs-dark);font-size:14px}.chs-field select:focus,.chs-field input[type=text]:focus,.chs-field input[type=password]:focus{outline:none;border-color:var(--chs-accent);box-shadow:0 0 0 3px rgba(var(--color-purple-rgb), 0.12)}.chs-field input[type=password],.chs-field input[type=text]{font-family:var(--chs-mono);font-size:13px}.chs-field input[type=range]{width:100%;accent-color:var(--chs-accent)}.chs-check{display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;font-size:14px;font-weight:600;cursor:pointer}.chs-check input{width:18px;height:18px;accent-color:var(--chs-accent)}.chs-settings__players{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:6px 0 14px;padding:14px;border:1px solid var(--chs-line);border-radius:12px;background:var(--chs-soft)}.chs-settings__player h4{margin:0 0 10px;font-size:13px;font-weight:700}.chs-settings__players[hidden],.chs-settings__player[hidden],.chs-settings__keys[hidden]{display:none}.chs-settings__keys{margin-top:8px;padding-top:14px;border-top:1px solid var(--chs-line)}.chs-settings__keys h4{margin:0 0 4px;font-size:13px;font-weight:700}.chs-settings__hint{margin:0 0 12px;font-size:12px;color:var(--chs-muted)}.chs-settings__actions,.chs-dialog__actions,.chs-welcome__actions{display:flex;justify-content:flex-end;gap:10px;margin-top:16px}@media(max-width: 560px){.chs-settings__players{grid-template-columns:1fr}}.chs-welcome__lead{margin:0 0 16px;font-size:15px;line-height:1.5}.chs-welcome__box{margin-bottom:14px;padding:14px 16px;border:1px solid var(--chs-line);border-radius:12px;background:var(--chs-soft)}.chs-welcome__box h4{margin:0 0 8px;font-size:14px;font-weight:700;color:var(--chs-accent)}.chs-welcome__box p{margin:0 0 8px;font-size:13px;line-height:1.5;color:var(--chs-dark)}.chs-welcome__box ul,.chs-welcome__box ol{margin:0;padding-left:20px;font-size:13px;line-height:1.7;color:var(--chs-dark)}.chs-welcome__box a{color:var(--chs-accent);text-decoration:underline}.chs-welcome__note{margin:0;font-size:13px;font-style:italic;color:var(--chs-muted)}.chs-promo{display:grid;grid-template-columns:1fr 1fr;gap:10px}.chs-promo__btn{height:auto;padding:14px 10px;flex-direction:column;gap:6px}.chs-promo__glyph{font-size:30px;line-height:1;color:var(--chs-accent)}.chs-load{display:flex;flex-direction:column;gap:6px;max-height:300px;overflow-y:auto}.chs-load__empty{margin:8px 0;font-size:13px;font-style:italic;color:var(--chs-muted)}.chs-load__row{display:flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid var(--chs-line);border-radius:8px;background:var(--chs-panel)}.chs-load__open{flex:1;text-align:left;background:none;border:none;cursor:pointer;font-size:13px;color:var(--chs-dark)}.chs-load__open:hover{color:var(--chs-accent)}.chs-load__del{background:none;border:none;cursor:pointer;font-size:12px;color:var(--chs-danger)}.chs-toast{position:fixed;top:20px;right:20px;z-index:11001;max-width:340px;padding:12px 16px;border-radius:10px;background:var(--chs-dark);color:#fff;font-size:14px;box-shadow:0 12px 30px rgba(0,0,0,.2);opacity:0;transform:translateY(-8px);pointer-events:none;transition:opacity .2s ease,transform .2s ease}.chs-toast.is-visible{opacity:1;transform:translateY(0)}.chs-toast--success{background:var(--chs-ok)}.chs-toast--error{background:var(--chs-danger)}.chs-toast--warning{background:#b26a00}