:root {
  color-scheme: dark;
  --bg-a: #101728;
  --bg-b: #17213b;
  --panel: rgba(13, 20, 38, 0.82);
  --panel-border: rgba(255, 255, 255, 0.14);
  --text: #f8fbff;
  --muted: #b9c6d8;
  --cyan: #22d3ee;
  --lime: #a3e635;
  --pink: #fb7185;
  --amber: #fbbf24;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 15%, rgba(34, 211, 238, 0.3), transparent 26rem),
    radial-gradient(circle at 85% 20%, rgba(251, 113, 133, 0.28), transparent 24rem),
    radial-gradient(circle at 50% 85%, rgba(163, 230, 53, 0.22), transparent 25rem),
    linear-gradient(135deg, var(--bg-a), var(--bg-b));
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.game-panel {
  width: min(100%, 720px);
  display: grid;
  gap: 18px;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(18px);
}

.game-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.game-link {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  background: rgba(255, 255, 255, 0.08);
}

.game-link:hover,
.game-link:focus-visible {
  color: #07111f;
  background: linear-gradient(135deg, var(--lime), var(--cyan));
}

.game-link strong,
.game-link small {
  display: block;
}

.game-link strong {
  font-size: 1.05rem;
  line-height: 1.1;
}

.game-link small {
  margin-top: 2px;
  color: currentColor;
  opacity: 0.78;
  font-weight: 800;
}

.game-link-icon {
  width: 46px;
  height: 38px;
  position: relative;
  flex: 0 0 auto;
}

.snake-icon::before {
  content: "";
  position: absolute;
  inset: 7px 5px;
  border: 7px solid #22c55e;
  border-right-color: transparent;
  border-radius: 999px;
  transform: rotate(-16deg);
}

.snake-icon::after {
  content: "";
  width: 16px;
  height: 16px;
  position: absolute;
  right: 0;
  top: 2px;
  border-radius: 50%;
  background: #a3e635;
  box-shadow: 5px 5px 0 -3px #07111f;
}

.dino-launch-icon::before {
  content: "";
  width: 31px;
  height: 20px;
  position: absolute;
  left: 4px;
  bottom: 5px;
  border-radius: 14px 10px 12px 12px;
  background: #fbbf24;
}

.dino-launch-icon::after {
  content: "";
  width: 17px;
  height: 17px;
  position: absolute;
  right: 2px;
  top: 3px;
  border-radius: 7px;
  background: #f97316;
  box-shadow: -25px 15px 0 -6px #fbbf24;
}

.topbar,
.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

h1,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 7vw, 4.5rem);
  line-height: 0.95;
}

.topbar p,
.controls p {
  color: var(--muted);
}

.scoreboard {
  min-width: 112px;
  display: grid;
  justify-items: end;
  gap: 2px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
}

.scoreboard span {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.scoreboard strong {
  font-size: 2rem;
  line-height: 1;
}

canvas {
  width: 100%;
  aspect-ratio: 1;
  display: block;
  touch-action: none;
  user-select: none;
  border-radius: 8px;
  border: 2px solid rgba(255, 255, 255, 0.18);
  background: #0b1220;
  box-shadow: inset 0 0 42px rgba(34, 211, 238, 0.12);
}

button {
  min-height: 42px;
  padding: 0 18px;
  border: 0;
  border-radius: 8px;
  color: #07111f;
  font-weight: 800;
  cursor: pointer;
  background: linear-gradient(135deg, var(--lime), var(--cyan), var(--amber));
  box-shadow: 0 10px 26px rgba(34, 211, 238, 0.18);
}

button:focus-visible {
  outline: 3px solid rgba(251, 191, 36, 0.8);
  outline-offset: 3px;
}

@media (max-width: 560px) {
  .shell {
    padding: 12px;
  }

  .game-panel {
    padding: 14px;
  }

  .topbar,
  .controls {
    align-items: stretch;
    flex-direction: column;
  }

  .scoreboard {
    justify-items: start;
  }

  .game-nav {
    grid-template-columns: 1fr;
  }
}