:root{--text:#5f6472;--text-h:#111827;--bg:#f8fafc;--border:#d9e2ef;--accent:#6d28d9;--accent-bg:#6d28d91a;--accent-border:#6d28d959;--shadow:#0f172a1f 0 24px 60px -24px;color:var(--text);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:radial-gradient(circle at 0 0,#6d28d92e,#0000 32rem),linear-gradient(135deg,#f8fafc 0%,#eef2ff 100%);font:18px/145% Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}@media (prefers-color-scheme:dark){:root{--text:#cbd5e1;--text-h:#f8fafc;--bg:#0f172a;--border:#334155;--accent:#c4b5fd;--accent-bg:#c4b5fd24;--accent-border:#c4b5fd61;--shadow:#00000073 0 24px 60px -20px;background:radial-gradient(circle at 0 0,#7c3aed38,#0000 32rem),linear-gradient(135deg,#020617 0%,#111827 100%)}}*{box-sizing:border-box}body{min-width:320px;margin:0}button{font-family:inherit}#root{min-height:100svh}h1{color:var(--text-h);letter-spacing:-.06em;margin:0;font-size:clamp(2.5rem,11vw,4.5rem);line-height:.95}p{margin:0}.app-shell{box-sizing:border-box;justify-content:center;align-items:center;min-height:100svh;padding:clamp(1rem,5vw,3rem);display:flex}.game-card{background:color-mix(in srgb, var(--bg) 88%, var(--accent-bg));border:1px solid var(--border);box-shadow:var(--shadow);box-sizing:border-box;border-radius:28px;width:min(100%,560px);max-width:560px;padding:clamp(1.25rem,5vw,2.5rem)}.hero-copy{gap:.65rem;margin-bottom:1.25rem;display:grid}.eyebrow{color:var(--accent);letter-spacing:.16em;text-transform:uppercase;font-size:.78rem;font-weight:800}.intro{color:var(--text);max-width:32ch;margin-inline:auto}.status{background:var(--accent-bg);border:1px solid var(--accent-border);color:var(--text-h);border-radius:999px;justify-content:center;min-width:13rem;margin:0 0 1.25rem;padding:.7rem 1rem;font-weight:800;display:inline-flex}.board{grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(.5rem,2vw,.85rem);width:100%;max-width:420px;margin:0 auto 1.25rem;display:grid}.cell{aspect-ratio:1;background:var(--bg);border:2px solid var(--border);color:var(--text-h);cursor:pointer;border-radius:22px;font-size:clamp(2.8rem,16vw,5.2rem);font-weight:900;line-height:1;transition:border-color .16s,box-shadow .16s,transform .16s}.cell:hover:not(:disabled),.cell:focus-visible{border-color:var(--accent);box-shadow:0 0 0 5px var(--accent-bg);outline:none;transform:translateY(-2px)}.cell:disabled{cursor:default;opacity:1}.reset-button{background:var(--text-h);color:var(--bg);cursor:pointer;font:inherit;border:0;border-radius:999px;padding:.85rem 1.25rem;font-weight:800;transition:opacity .16s,transform .16s}.reset-button:hover,.reset-button:focus-visible{opacity:.9;outline:2px solid var(--accent);outline-offset:3px;transform:translateY(-1px)}@media (width<=420px){.game-card{border-radius:22px}.cell{border-radius:16px}}