:root,[data-theme=dark]{color-scheme:dark;--color-bg: #16181d;--color-surface: #1f232b;--color-surface-2: #262b36;--color-surface-3: #2e3440;--color-input-bg: #11141a;--color-border: #2e3440;--color-border-strong: #3b4252;--color-text: #e8eaf0;--color-text-muted: #b7c2d4;--color-text-dim: #8f9bb3;--color-accent: #d8b46a;--color-accent-strong: #b8933f;--color-accent-contrast: #1a1a1a;--color-success: #9fe0b0;--color-success-bg: #1f3a2a;--color-success-border: #3b6a45;--color-danger: #f08c8c;--color-warning: #e8d9a0;--color-warning-bg: #3a3320;--color-warning-border: #8a7430;--color-info: #a5cfe8;--color-info-bg: #2a3a4a;--color-info-border: #3f6f92;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-pill: 99px;--shadow-1: 0 1px 2px rgba(0, 0, 0, .35);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--font-sans: system-ui, "Segoe UI", sans-serif;--font-mono: ui-monospace, "Cascadia Mono", "Consolas", monospace;--text-sm: 13px;--text-md: 14px;--text-lg: 17px;--text-xl: 22px}[data-theme=light]{color-scheme:light;--color-bg: #f6f7f9;--color-surface: #ffffff;--color-surface-2: #eef0f4;--color-surface-3: #e4e7ec;--color-input-bg: #ffffff;--color-border: #dfe3e9;--color-border-strong: #c7cdd6;--color-text: #1b1f26;--color-text-muted: #4a5361;--color-text-dim: #6b7482;--color-accent: #a2761b;--color-accent-strong: #7d5a10;--color-accent-contrast: #ffffff;--color-success: #1f6f3f;--color-success-bg: #e6f5ea;--color-success-border: #a9d8b8;--color-danger: #b3392f;--color-warning: #7a5c12;--color-warning-bg: #fdf5e0;--color-warning-border: #e2cd94;--color-info: #1f5f7a;--color-info-bg: #e8f2f7;--color-info-border: #a9cad9;--shadow-1: 0 1px 2px rgba(16, 24, 40, .08)}*{box-sizing:border-box}body{margin:0;font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);transition:background .15s ease,color .15s ease}.page{max-width:1000px;margin:0 auto;padding:var(--space-5)}h1{margin:0 0 var(--space-3);font-size:var(--text-xl)}h2{font-size:var(--text-lg);margin:0 0 10px}.top{display:flex;justify-content:space-between;align-items:center;gap:var(--space-3);margin-bottom:var(--space-4);flex-wrap:wrap}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-5);margin-bottom:var(--space-4);box-shadow:var(--shadow-1)}.tabs{display:flex;gap:var(--space-2);margin-bottom:var(--space-3)}button,.tabs button{font:inherit;background:var(--color-surface-3);color:var(--color-text);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);padding:8px 14px;cursor:pointer}button:hover{filter:brightness(1.12)}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,a:focus-visible{outline:2px solid var(--color-accent);outline-offset:1px}button.active{background:var(--color-accent);border-color:var(--color-accent-strong);color:var(--color-accent-contrast)}button:disabled{opacity:.55;cursor:not-allowed}.row{display:flex;gap:var(--space-2);align-items:center;margin:10px 0;flex-wrap:wrap}input,textarea,select{font:inherit;background:var(--color-input-bg);color:var(--color-text);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);padding:8px 10px}input{min-width:220px}form{display:flex;flex-direction:column;gap:10px;max-width:320px}.error{color:var(--color-danger)}.hint{color:var(--color-text-muted);font-size:var(--text-md)}.game{display:flex;gap:20px;flex-wrap:wrap}.board{width:min(520px,92vw)}.side{flex:1;min-width:220px}.result{color:var(--color-success);font-weight:600}.moves{font-size:var(--text-md);line-height:1.6;color:var(--color-text-muted)}table.tbl{width:100%;border-collapse:collapse;font-size:var(--text-md)}.tbl th,.tbl td{text-align:left;padding:6px 10px;border-bottom:1px solid var(--color-border)}.tbl th{color:var(--color-text-dim);font-weight:600}.tbl tr{cursor:pointer}.tbl tr.sel,.tbl tr:hover{background:var(--color-surface-2)}.chip{display:inline-block;padding:2px 10px;border-radius:var(--radius-pill);font-size:12px;background:var(--color-surface-3);border:1px solid var(--color-border-strong)}.chip.ok{background:var(--color-success-bg);border-color:var(--color-success-border);color:var(--color-success)}.chip.run{background:var(--color-info-bg);border-color:var(--color-info-border);color:var(--color-info)}.chip.warn{background:var(--color-warning-bg);border-color:var(--color-warning-border);color:var(--color-warning)}.grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4)}@media (max-width: 800px){.grid{grid-template-columns:1fr}}code{background:var(--color-input-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:1px 6px;font-family:var(--font-mono);font-size:var(--text-sm)}.tbl td.outcome-win{color:var(--color-success);font-weight:600}.tbl td.outcome-loss{color:var(--color-danger);font-weight:600}.tbl td.outcome-draw{color:var(--color-warning);font-weight:600}.tbl td.outcome-aborted{color:var(--color-text-dim)}pre.pgn{background:var(--color-input-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:10px;font-size:var(--text-sm);line-height:1.5;white-space:pre-wrap}.switchers{display:flex;gap:var(--space-2);align-items:center}.switchers button{padding:6px 10px;font-size:var(--text-sm)}.chat-list{max-height:420px;min-height:200px;overflow-y:auto;display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-2);background:var(--color-input-bg);border:1px solid var(--color-border);border-radius:var(--radius-md)}.chat-msg{display:flex;gap:var(--space-2);align-items:baseline;padding:var(--space-2);background:var(--color-surface-2);border:1px solid var(--color-border);border-left:3px solid var(--color-border-strong);border-radius:var(--radius-md)}.chat-msg.me{border-left-color:var(--color-accent);background:var(--color-surface-3)}.chat-author{color:var(--color-accent);font-weight:600;font-size:var(--text-sm);white-space:nowrap}.chat-text{flex:1;overflow-wrap:anywhere}.chat-time{color:var(--color-text-dim);font-size:var(--text-sm);white-space:nowrap}@media (prefers-reduced-motion: reduce){*{transition:none!important}}