:root{color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#111113;color:#f4f4f5;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,rgba(20,184,166,.18),transparent 34%),linear-gradient(225deg,rgba(249,115,22,.16),transparent 28%),#111113}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.65}.app-shell{min-height:100vh;display:grid;grid-template-columns:76px minmax(0,1fr)}.rail{border-right:1px solid rgba(255,255,255,.1);background:#111113d1;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);display:flex;flex-direction:column;align-items:center;gap:14px;padding:18px 12px}.brand-mark,.rail-button,.icon-button{width:44px;height:44px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center}.brand-mark{color:#111113;background:#facc15;box-shadow:0 16px 40px #facc153d}.rail-button,.icon-button{color:#f4f4f5;border:1px solid rgba(255,255,255,.1);background:#ffffff0f}.rail-button.active,.rail-button:hover,.icon-button:hover{border-color:#14b8a699;color:#5eead4}.workspace{width:min(1440px,100%);margin:0 auto;padding:28px;display:flex;flex-direction:column;gap:22px}.hero-bar{min-height:180px;display:flex;justify-content:space-between;gap:24px;align-items:flex-start;padding:28px 0 8px}.eyebrow{margin:0 0 8px;color:#5eead4;font-size:.78rem;text-transform:uppercase;letter-spacing:0;font-weight:800}h1,h2,p{margin-top:0}h1{margin-bottom:10px;font-size:clamp(2.7rem,6vw,5.8rem);line-height:.92;letter-spacing:0}h2{font-size:1rem;margin:0}.hero-copy{max-width:620px;color:#d4d4d8;font-size:1.05rem;line-height:1.55}.system-strip{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}.system-strip span{min-height:34px;display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:0 12px;color:#d4d4d8;background:#ffffff0f}.dashboard-grid{display:grid;grid-template-columns:minmax(230px,.75fr) minmax(280px,1fr) minmax(360px,1.4fr);grid-template-areas:"profile games leaderboard" "arena arena leaderboard";gap:18px}.panel{border:1px solid rgba(255,255,255,.1);border-radius:8px;background:#1d1d21d1;box-shadow:0 24px 80px 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p,.empty-state{color:#a1a1aa;line-height:1.5}.reaction-game{display:grid;gap:14px}.reaction-pad{width:100%;min-height:270px;border:1px solid rgba(255,255,255,.14);border-radius:8px;color:#f4f4f5;background:linear-gradient(135deg,#e11d4833,#f9731621),#18181b}.reaction-pad span{font-size:clamp(2rem,6vw,4.8rem);font-weight:950;letter-spacing:0}.reaction-pad.waiting{background:linear-gradient(135deg,#facc153d,#f9731624),#18181b}.reaction-pad.ready{background:linear-gradient(135deg,#22c55e57,#14b8a638),#18181b}.game-actions,.memory-stats{display:flex;align-items:center;gap:10px}.memory-stats{justify-content:space-between;margin-bottom:14px;color:#d4d4d8;font-weight:800}.memory-grid{display:grid;grid-template-columns:repeat(4,minmax(54px,1fr));gap:10px}.memory-card{aspect-ratio:1;min-height:64px;border-radius:8px;border:1px solid rgba(255,255,255,.12);color:#111113;background:linear-gradient(135deg,rgba(94,234,212,.18),transparent),#27272a}.memory-card.open{background:#facc15}.memory-card span{font-size:1.8rem;font-weight:950}.leaderboard-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}.leaderboard-list li{min-height:54px;display:grid;grid-template-columns:58px minmax(0,1fr) auto;align-items:center;gap:10px;border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:0 12px;background:#ffffff0d}.rank{color:#facc15;font-weight:950}.name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.status-bar{min-height:44px;display:flex;justify-content:space-between;gap:16px;color:#d4d4d8;border-top:1px solid rgba(255,255,255,.1);padding-top:14px}.error-shell{grid-template-columns:1fr;place-items:center;padding:24px}.error-panel{width:min(620px,100%);border:1px solid rgba(255,255,255,.12);border-radius:8px;background:#1d1d21e6;padding:28px;box-shadow:0 24px 80px #00000047}.error-panel svg{color:#facc15}.error-panel h1{margin:14px 0 12px;font-size:clamp(2rem,5vw,3.6rem)}.error-panel p{color:#d4d4d8;line-height:1.55}.error-detail{display:block;margin:16px 0;padding:12px;border-radius:8px;color:#fecaca;background:#7f1d1d52;overflow-wrap:anywhere}@media (max-width: 1020px){.dashboard-grid{grid-template-columns:1fr 1fr;grid-template-areas:"profile games" "arena arena" "leaderboard leaderboard"}}@media (max-width: 720px){.app-shell{grid-template-columns:1fr}.rail{min-height:64px;flex-direction:row;justify-content:center;border-right:0;border-bottom:1px solid rgba(255,255,255,.1)}.workspace{padding:18px}.hero-bar,.status-bar{flex-direction:column}.dashboard-grid{grid-template-columns:1fr;grid-template-areas:"profile" "games" "arena" "leaderboard"}.game-tabs{grid-template-columns:1fr}}