:root{--bg:#1d1830;--panel:#2a2245;--ink:#f6f2ff;--muted:#b9b0d6;--accent:#ffd75e;--accent2:#e86fd8;color-scheme:dark}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font:15px/1.35 system-ui,-apple-system,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;overscroll-behavior:none;-webkit-tap-highlight-color:transparent}
body{display:flex;flex-direction:column;height:100dvh;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);user-select:none;-webkit-user-select:none}
button{font:inherit;color:inherit;background:var(--panel);border:0;border-radius:12px;padding:8px 12px;min-height:40px;min-width:40px;cursor:pointer}
button:focus-visible,canvas:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.tools button{padding:8px 0}
.top{display:flex;align-items:center;gap:8px;padding:8px 10px 4px}
.brand{font-size:20px;margin:0;font-weight:900;letter-spacing:.5px;background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.tabs{display:flex;gap:4px;margin-left:auto}
.tabs button[aria-pressed=true]{background:var(--accent);color:#2b2340;font-weight:700}
.tools{display:flex;gap:4px}
.hud{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;padding:4px 10px}
.hud>div{background:var(--panel);border-radius:12px;padding:4px 8px;display:flex;flex-direction:column;align-items:center}
.hud span{font-size:11px;color:var(--muted)}.hud b{font-size:18px;font-variant-numeric:tabular-nums}
.nextbox canvas{width:44px;height:44px;margin-top:-6px}
.hud .nextbox{padding-bottom:0}
.mode{margin:4px 0 0;text-align:center;font-size:12px;color:var(--muted)}
.stage{flex:1;min-height:0;display:flex}
#board{flex:1;width:100%;height:100%;touch-action:none;display:block}
.hint{margin:0 0 6px;text-align:center;font-size:12px;color:var(--muted)}
dialog{background:#2a2245;color:var(--ink);border:0;border-radius:20px;padding:20px;max-width:min(92vw,380px);text-align:center;box-shadow:0 20px 60px #0008}
dialog::backdrop{background:#0009}
dialog button{display:block;width:100%;margin-top:8px}
dialog h2{margin:0 0 8px}
.primary{background:var(--accent);color:#2b2340;font-weight:800}
.big{font-size:40px;font-weight:900;margin:4px 0}
.share{background:#1d1830;border-radius:12px;padding:10px;white-space:pre-wrap;font:14px/1.5 ui-monospace,monospace;text-align:left;margin:8px 0}
.muted{color:var(--muted);font-size:13px}
.toast{position:fixed;left:50%;top:18%;transform:translate(-50%,-10px);background:#000c;padding:8px 14px;border-radius:999px;opacity:0;transition:.2s;pointer-events:none;z-index:9}
.toast.show{opacity:1;transform:translate(-50%,0)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
@media (prefers-reduced-motion:reduce){.toast{transition:none}}