:root {
  --bg-1: #08111f;
  --bg-2: #14253a;
  --panel: rgba(6, 12, 22, 0.76);
  --line: rgba(160, 214, 255, 0.2);
  --text: #eff7ff;
  --muted: #9eb4ca;
  --cyan: #63f5ff;
  --lime: #c4ff4d;
  --rose: #ff5c88;
  --amber: #ffc857;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(99, 245, 255, 0.16), transparent 32%),
    radial-gradient(circle at 80% 20%, rgba(255, 92, 136, 0.16), transparent 28%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 60%, #060a12);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 92%);
}

.shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 36px;
}

.hero {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0;
  color: var(--cyan);
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 5.3rem);
  line-height: 0.95;
}

.subtitle {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.controls span,
.stat {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  padding: 10px 14px;
}

.game-panel {
  border: 1px solid rgba(160, 214, 255, 0.24);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.hud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px;
  border-bottom: 1px solid rgba(160, 214, 255, 0.12);
}

.stat {
  min-width: 120px;
  border-radius: 20px;
}

.label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 4px;
}

.canvas-wrap {
  position: relative;
  min-height: min(70vh, 720px);
}

canvas {
  display: block;
  width: 100%;
  height: min(70vh, 720px);
  touch-action: manipulation;
  cursor: pointer;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 10px;
  text-align: center;
  padding: 24px;
  background: linear-gradient(180deg, rgba(8, 17, 31, 0.28), rgba(8, 17, 31, 0.7));
  transition: opacity 160ms ease;
}

.overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.overlay h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.overlay p {
  margin: 0;
  max-width: 540px;
  color: var(--muted);
}

button {
  border: 0;
  border-radius: 999px;
  padding: 14px 20px;
  font: inherit;
  font-weight: 700;
  background: linear-gradient(135deg, var(--lime), var(--cyan));
  color: #041018;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(99, 245, 255, 0.24);
}

@media (max-width: 720px) {
  .shell {
    width: min(100vw - 18px, 1180px);
    padding-top: 18px;
  }

  .game-panel {
    border-radius: 22px;
  }

  .hud {
    gap: 8px;
    padding: 12px;
  }

  .stat {
    min-width: calc(50% - 4px);
  }

  canvas,
  .canvas-wrap {
    min-height: 58vh;
    height: 58vh;
  }
}