:root{--bg:#0b3d2e;--bg-card:#0d4a36;--bg-surface:#145a42;--text:#e8efe8;--text-muted:#8fb8a0;--accent:#4ade80;--accent-dim:#22c55e;--success:#78e08f;--danger:#ef4444;--radius:12px;--radius-sm:8px}@media (prefers-color-scheme:light){:root{--bg:#e8f5e9;--bg-card:#fff;--bg-surface:#c8e6c9;--text:#1b5e20;--text-muted:#4a7c59;--accent:#2e7d32;--accent-dim:#43a047}}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html,body{height:100%;overflow:hidden}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;touch-action:manipulation;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}#root{height:100%}.layout{max-width:500px;height:100%;padding:env(safe-area-inset-top) 16px env(safe-area-inset-bottom);flex-direction:column;margin:0 auto;display:flex;overflow:hidden}.header{flex-shrink:0;align-items:center;gap:12px;padding:8px 0;display:flex}.header-title{font-size:1.15rem;font-weight:700}.header-title 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#ffffff0f;max-width:320px;padding:24px}.shift-intro h3,.shift-gameover h3{color:var(--accent);margin-bottom:10px;font-size:1.2rem}.shift-intro p{color:var(--text-muted);margin-bottom:8px;font-size:.85rem;line-height:1.4}.shift-intro .play-again-btn,.shift-gameover .play-again-btn{margin-top:12px}.gameover-stats{justify-content:space-around;margin:16px 0;display:flex}.go-stat{text-align:center}.go-value{color:var(--accent);font-size:1.4rem;font-weight:700;display:block}.go-label{color:var(--text-muted);text-transform:uppercase;font-size:.65rem}.shift-menu-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;margin:10px auto 0;font-family:inherit;font-size:.85rem;text-decoration:underline;display:block}.split-lanes{flex:1;gap:8px;min-height:0;padding:4px 0;display:flex}.split-lane{background:var(--bg-card);border-radius:var(--radius);border:1px solid #ffffff0f;flex-direction:column;flex:1;display:flex;overflow:hidden}.lane-label{text-align:center;color:var(--accent);background:#00000026;flex-shrink:0;padding:6px 4px;font-size:.75rem;font-weight:600;transition:all .3s}.lane-label-flash{color:#fff;background:var(--accent-dim);animation:.6s ease-out rulePulse}.lane-area{flex:1;position:relative;overflow:hidden}.lane-item{color:#fff;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;font-family:inherit;font-size:1.1rem;font-weight:700;transition:transform .1s;display:flex;position:absolute;left:50%;transform:translate(-50%);box-shadow:0 2px 8px #00000040}.lane-item:active{transform:translate(-50%)scale(.85)}.lanes-swapped .lane-label{animation:.6s ease-out rulePulse}.recall-board{flex-direction:column;align-items:center;gap:16px;width:100%;max-width:320px;display:flex}.recall-phase-label{color:var(--text-muted);font-size:.9rem;font-weight:600}.recall-phase-label.text-success{color:var(--success)}.recall-phase-label.text-danger{color:var(--danger)}.recall-circles{grid-template-columns:repeat(3,1fr);gap:12px;width:100%;max-width:240px;display:grid}.recall-circle{aspect-ratio:1;cursor:default;border:3px solid #ffffff1a;border-radius:50%;font-size:0;transition:all .2s}.recall-circle.circle-active{border-color:#fffc;transform:scale(1.1);box-shadow:0 0 20px #ffffff4d}.recall-circle.circle-tappable{cursor:pointer;opacity:.6!important}.recall-circle.circle-tappable:active{transform:scale(.9)}.recall-input-dots{justify-content:center;gap:8px;display:flex}.input-dot{border-radius:50%;width:14px;height:14px;transition:background-color .2s}.interrupt-card{background:var(--bg-card);border-radius:var(--radius);border:2px solid var(--accent-dim);text-align:center;width:100%;max-width:300px;padding:24px;animation:.25s ease-out cardEnter}.interrupt-label{text-transform:uppercase;letter-spacing:1px;color:var(--accent);margin-bottom:12px;font-size:.7rem;font-weight:600}.interrupt-question{color:var(--text);margin-bottom:16px;font-size:1.1rem;line-height:1.5}.interrupt-options{justify-content:center;gap:8px;display:flex}.interrupt-options .shift-option{flex:1;padding:10px 8px}