:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-card: #21262d;--border-color: #30363d;--accent-gold: #f59e0b;--accent-orange: #f97316;--accent-red: #ef4444;--accent-blue: #38bdf8;--accent-green: #22c55e;--text-main: #f0f6fc;--text-muted: #8b949e;--board-light: #ececd0;--board-dark: #739552;--board-selected: rgba(245, 158, 11, .7);--board-last-move: rgba(254, 240, 138, .5);--board-in-check: rgba(239, 68, 68, .85);--board-legal-dot: rgba(20, 20, 20, .25)}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{height:100%;width:100%;overflow-x:hidden;background-color:var(--bg-primary);color:var(--text-main);font-family:Outfit,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;-webkit-user-select:none;user-select:none;touch-action:manipulation}button{font-family:inherit;cursor:pointer;border:none;outline:none}input,textarea{font-family:inherit}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#484f58}