:root{
  --bg:#0B1026;
  --ink:#EAF2FF;
  --muted:#8E9CC4;
  --mint:#37E2B4;
  --gold:#FFD166;
  --gold-d:#B8902A;
  --paper:#FFFFFF;
  --paper-ink:#0B1026;
  --paper-muted:#5D6A8F;
  --font:"Rubik", "Segoe UI", system-ui, sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{background:var(--bg)}
body{margin:0;color:var(--ink);font:16px/1.35 var(--font);padding-inline:8px;padding-block:6px 8px;-webkit-tap-highlight-color:transparent;overscroll-behavior:none;
  background:radial-gradient(110% 70% at 50% 30%,#18224A 0%,#070A18 80%) fixed,var(--bg)}
.app{max-width:720px;margin-inline:auto;width:100%;height:calc(100vh - 14px);height:calc(100dvh - 14px);min-height:480px;display:grid;grid-template-rows:auto 1fr auto;grid-template-columns:minmax(0,1fr);gap:6px}

.bar{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px}
.back{color:var(--muted);text-decoration:none;font-weight:600;font-size:15px;white-space:nowrap}
.back:hover{color:var(--ink)}
.title{margin:0;font-weight:800;font-size:clamp(1.25rem,4vw,1.9rem);white-space:nowrap}
.title span{color:var(--mint)}
.bar-actions{display:flex;gap:8px;align-items:center}
.icon-btn{width:42px;height:42px;border-radius:12px;border:0;background:rgba(255,255,255,.1);color:var(--ink);display:grid;place-items:center;cursor:pointer;padding:0;font-size:18px}
.icon-btn span{display:grid;place-items:center}
.icon-btn span[hidden]{display:none}
.icon-btn svg{width:22px;height:22px}
button{font:inherit;cursor:pointer}
.btn{border:0;border-radius:12px;background:rgba(255,255,255,.12);color:var(--ink);font-weight:700;padding:10px 18px;box-shadow:0 4px 0 rgba(0,0,0,.35)}
.btn:active{translate:0 3px;box-shadow:0 1px 0 rgba(0,0,0,.35)}
.btn.primary{background:var(--mint);color:#06392B;box-shadow:0 4px 0 #1E9C7A}
.btn.big{font-size:1.15rem;padding:12px 26px;width:100%}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}

.stage{position:relative;min-height:0;touch-action:none}
canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;user-select:none;-webkit-user-select:none}

.pad{display:grid;grid-template-columns:repeat(3,58px);grid-template-rows:repeat(2,46px);gap:6px;justify-content:center;
  grid-template-areas:". up ." "left down right"}
.pad button{border:0;border-radius:12px;background:rgba(255,255,255,.1);color:var(--ink);font-size:20px;touch-action:manipulation}
.pad button:active{background:rgba(55,226,180,.4)}
.pad [data-d="up"]{grid-area:up} .pad [data-d="left"]{grid-area:left} .pad [data-d="down"]{grid-area:down} .pad [data-d="right"]{grid-area:right}
@media (hover:hover) and (pointer:fine){ .pad{display:none} }

.overlay{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:16px;background:rgba(5,8,20,.82);overflow-y:auto}
.overlay[hidden]{display:none}
.sheet{width:100%;max-width:420px;background:var(--paper);color:var(--paper-ink);border-radius:22px;padding:20px 22px;display:grid;gap:12px;box-shadow:0 20px 50px rgba(0,0,0,.5)}
.sheet.center{text-align:center;justify-items:center}
.help{margin:0;font-size:13.5px;color:var(--paper-muted);line-height:1.55;text-align:left}
.help b{color:var(--paper-ink)}
.trophy{font-size:56px;line-height:1}
.end-title{margin:0;font-weight:800;font-size:1.7rem}
.lead{margin:0;color:var(--paper-muted);font-weight:700}
.lead:empty{display:none}

@media (max-width:640px){
  .back-tx{display:none}
  .back{font-size:20px}
}