:root {
  --bg: #080d13;
  --bg-2: #101c28;
  --panel: #0a1723df;
  --ink: #e8f2f4;
  --dim: #9bb1bc;
  --line: #7393a45c;
  --cyan: #74d8ed;
  --ember: #ff995c;
  --orange: #d9793e;
  --danger: #f26e58;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
html { background: var(--bg); }
body { color: var(--ink); background: var(--bg); font-family: "Segoe UI", Arial, sans-serif; touch-action: none; }
canvas { display: block; width: 100%; height: 100%; outline: none; }
button { font: inherit; cursor: pointer; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }

.hud {
  position: fixed;
  inset: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 38px 20px 20px;
  pointer-events: none;
  text-shadow: 0 2px 12px #000;
}
.brand {
  padding-left: 11px;
  border-left: 2px solid var(--cyan);
  color: var(--dim);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .19em;
  line-height: 1.55;
  text-transform: uppercase;
}
.brand b { color: var(--ink); font-size: 17px; letter-spacing: .24em; }
.score { color: var(--ink); font: 700 clamp(18px, 2.5vw, 28px)/1.2 Consolas, monospace; text-align: right; }
.meta { color: var(--dim); font: 10px/1.5 Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }

.overlay {
  position: fixed;
  inset: 0;
  z-index: 6;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 24px 20px max(42px, env(safe-area-inset-bottom));
  background: linear-gradient(0deg, #030a12d9 0%, #030a1280 25%, transparent 68%);
  pointer-events: auto;
}
.overlay.hidden, [hidden] { display: none !important; }
.card {
  width: min(480px, 100%);
  padding: 22px 28px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--ember);
  background: var(--panel);
  box-shadow: 0 18px 60px #0009;
  text-align: center;
}
.card h1 { margin: 0; color: var(--ink); font-size: clamp(22px, 4vw, 30px); font-weight: 700; letter-spacing: .2em; line-height: 1.15; text-transform: uppercase; }
.card p { margin: 12px 0 0; color: #b8c9d1; font-size: 13px; line-height: 1.55; }
.hint { margin-top: 18px; color: var(--ember); font: 700 11px/1.5 Consolas, monospace; letter-spacing: .12em; text-transform: uppercase; }

a.back {
  position: fixed;
  top: 13px;
  left: 20px;
  z-index: 8;
  color: var(--dim);
  font: 10px/1.4 Consolas, monospace;
  letter-spacing: .11em;
  text-decoration: none;
  text-shadow: 0 2px 8px #000;
}
a.back:hover { color: var(--ink); }

@media (max-width: 640px) {
  .hud { padding: 37px 12px max(12px, env(safe-area-inset-bottom)); }
  .brand { font-size: 8px; }
  .brand b { font-size: 14px; }
  .score { font-size: 19px; }
  .meta { font-size: 9px; }
  .overlay { padding: 14px 12px max(96px, env(safe-area-inset-bottom)); }
  .card { padding: 18px 20px; }
  a.back { left: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}