:root{color:#f5f7ff;background-color:#02040a;font-family:Pretendard,Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,sans-serif}*{box-sizing:border-box}body{color:#f5f7ff;background:radial-gradient(circle at top,#141b35,#05070f 55%);min-height:100vh;margin:0}#app{justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.game-shell{grid-template-columns:minmax(320px,auto) 320px;gap:24px;width:min(960px,100%);display:grid}@media (width<=800px){.game-shell{grid-template-columns:1fr}}.canvas-panel{background:#080a14b3;border-radius:16px;padding:16px;box-shadow:0 20px 50px #00000073}#game-root canvas{margin:0 auto;display:block}.hud-panel{background:#04060ce6;border-radius:16px;padding:20px;box-shadow:inset 0 0 0 1px #ffffff0d,0 20px 45px #00000080}.hud-header{justify-content:space-between;align-items:baseline;margin-bottom:12px;display:flex}.hud-header h1{margin:0;font-size:1.4rem}.hud-status{letter-spacing:.1em;background:#1c2038;border-radius:999px;padding:4px 10px;font-size:.85rem;font-weight:600}.hud-status.is-alert{background:#c92a5c}.hud-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0 0 16px;display:grid}.hud-stats div{background:#121426e6;border-radius:12px;padding:8px 12px}.hud-stats dt{text-transform:uppercase;letter-spacing:.08em;color:#8b92af;font-size:.75rem}.hud-stats dd{margin:2px 0 0;font-size:1.2rem;font-weight:600}.hud-block{margin-bottom:16px}.hud-block h2{letter-spacing:.1em;color:#9da5c7;margin:0 0 8px;font-size:.95rem}.piece-slot{border:1px dashed #fff3;border-radius:12px;place-items:center;height:48px;font-weight:600;display:grid}.piece-list{flex-wrap:wrap;gap:8px;display:flex}.piece-chip{background:#ffffff14;border-radius:8px;padding:4px 10px;font-weight:700}.piece-i{background:#4cc0f033}.piece-j{background:#5271ff33}.piece-l{background:#ffa62933}.piece-o{color:#1c1c24;background:#f7e24133}.piece-s{background:#4dd06e33}.piece-t{background:#b887ff33}.piece-z{background:#ff5c6333}.hud-controls{gap:12px;margin-bottom:12px;display:flex}.hud-controls button{color:#fff;cursor:pointer;background:linear-gradient(135deg,#256eff,#6a5cff);border:none;border-radius:999px;flex:1;padding:10px 0;font-size:.9rem;font-weight:600}.hud-controls button:nth-child(2){background:linear-gradient(135deg,#ff416c,#ff4b2b)}.hud-controls button:active{transform:translateY(1px)}.hud-note{text-align:center;color:#c0c4dc;background:#ffffff0d;border-radius:10px;margin:0;padding:12px;font-size:.85rem}.hud-instructions{color:#9aa3c8;font-size:.8rem;line-height:1.4}.leaderboard-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px;display:flex}.leaderboard-header h2{letter-spacing:.1em;color:#9da5c7;margin:0;font-size:.95rem}.leaderboard-header button{color:#f5f7ff;cursor:pointer;background:#ffffff14;border:none;border-radius:999px;padding:6px 12px;font-size:.75rem}.leaderboard-header button:hover{background:#ffffff26}.leaderboard-list{flex-direction:column;gap:8px;display:flex}.leaderboard-row{background:#0e111ee6;border:1px solid #ffffff0a;border-radius:12px;grid-template-columns:50px 1fr auto;align-items:center;padding:8px 10px;display:grid}.leaderboard-rank{color:#8e96b8;font-size:.9rem;font-weight:700}.leaderboard-user strong{font-size:.95rem;display:block}.leaderboard-user small{color:#7f87ad;font-size:.7rem}.leaderboard-score{color:#f7f8ff;font-size:.95rem;font-weight:700}