@import url('https://fonts.googleapis.com/css2?family=Bungee&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  color-scheme: dark;
  --ink: #f5f0df;
  --muted: #a8c2c5;
  --coral: #ff7766;
  --aqua: #52e1cf;
  --deep: #071f31;
  --panel: rgba(7, 37, 54, 0.88);
  --line: rgba(168, 221, 216, 0.2);
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: #061a2a;
  font-family: 'Space Grotesk', sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 8% 20%, rgba(82, 225, 207, 0.14), transparent 26rem),
    radial-gradient(circle at 92% 75%, rgba(255, 119, 102, 0.12), transparent 28rem),
    linear-gradient(145deg, #082942 0%, #061a2a 52%, #111d31 100%);
  content: '';
}

.game-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 6rem) 0 3rem;
}

.masthead { margin-bottom: 2rem; }
.kicker, .overlay-label, .score-label {
  margin: 0;
  color: var(--aqua);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0.55rem 0 0;
  font-family: 'Bungee', sans-serif;
  font-size: clamp(2.5rem, 8vw, 6.8rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h1 span { color: var(--coral); }
.lede { margin: 1rem 0 0; color: var(--muted); font-size: clamp(1rem, 2vw, 1.25rem); }

.game-card {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
}

.scoreboard {
  display: flex;
  justify-content: space-between;
  padding: 1.1rem 1.35rem;
  border-bottom: 1px solid var(--line);
}
.scoreboard strong { display: block; margin-top: 0.1rem; color: var(--ink); font-size: 1.65rem; line-height: 1; }
.best-score { text-align: right; }

.canvas-wrap { position: relative; background: #0b526a; }
canvas { display: block; width: 100%; height: auto; aspect-ratio: 5 / 4; touch-action: manipulation; }

.overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(420px, calc(100% - 2rem));
  padding: 2rem;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(245, 240, 223, 0.25);
  background: rgba(5, 28, 43, 0.88);
  text-align: center;
  backdrop-filter: blur(8px);
}
.overlay h2 { margin: 0.45rem 0 0.7rem; font-family: 'Bungee', sans-serif; font-size: clamp(1.35rem, 4vw, 2.25rem); font-weight: 400; line-height: 1.1; }
.overlay p:not(.overlay-label) { margin: 0; color: var(--muted); line-height: 1.5; }
button {
  margin-top: 1.5rem;
  padding: 0.85rem 1.15rem;
  border: 0;
  color: #062333;
  background: var(--aqua);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease;
}
button:hover, button:focus-visible { background: #8bf2e4; transform: translateY(-2px); }
button span { margin-left: 0.6rem; font-size: 1.1rem; }
.is-hidden { display: none; }

.game-footer { display: flex; justify-content: space-between; gap: 1rem; padding: 0.9rem 1.35rem; color: var(--muted); font-size: 0.78rem; }
kbd { padding: 0.18rem 0.35rem; border: 1px solid var(--line); color: var(--ink); font-size: 0.68rem; }

@media (max-width: 600px) {
  .game-shell { width: min(100% - 20px, 1120px); padding-top: 2rem; }
  .masthead { margin-bottom: 1.25rem; }
  .game-footer { align-items: flex-start; flex-direction: column; gap: 0.5rem; }
  .overlay { padding: 1.4rem; }
}