:root{--bg: #121417;--bg-panel: #181b20;--bg-raised: #1e2228;--bg-hover: #262b33;--border: #2c323a;--text: #e8eaed;--muted: #8b919a;--gold: #ecc66e;--p0: rgb(220, 70, 70);--p1: rgb(70, 100, 220);--fog: rgb(70, 73, 76);--plain: rgb(230, 230, 230);--mountain: rgb(187, 187, 187);--win: #5dcea8;--draw: #c9b458;--error: #e85d5d;--focus: #ecc66e;color-scheme:dark}*{box-sizing:border-box}html,body,#root{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:Quicksand,system-ui,sans-serif;font-weight:500}button,input,select,textarea{font-family:inherit;font-size:.95rem}button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.app{height:100vh;overflow:hidden;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:16px;padding:10px 18px;border-bottom:1px solid 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