:root {
  --bg-top: #70c1ff;
  --bg-mid: #95d9ff;
  --bg-bottom: #e6fbff;
  --panel-bg: rgba(9, 34, 63, 0.32);
  --text-main: #f5fcff;
  --text-soft: rgba(240, 250, 255, 0.86);
  --accent: #ffe19b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: "Avenir Next", "Futura", "Trebuchet MS", sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at 18% 20%, rgba(255, 255, 255, 0.42), transparent 30%),
    radial-gradient(circle at 72% 26%, rgba(255, 255, 255, 0.36), transparent 34%),
    linear-gradient(180deg, var(--bg-top), var(--bg-mid) 48%, var(--bg-bottom));
}

.app-shell {
  width: min(1200px, 96vw);
  display: grid;
  gap: 14px;
  padding: 20px 14px 24px;
}

.title-wrap {
  display: grid;
  gap: 2px;
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--panel-bg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 12px 30px rgba(7, 31, 49, 0.2);
  backdrop-filter: blur(4px);
}

.eyebrow {
  margin: 0;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: 0.03em;
}

.subtitle {
  margin: 0;
  color: var(--text-soft);
}

.canvas-wrap {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow:
    0 20px 40px rgba(9, 40, 58, 0.28),
    inset 0 0 0 1px rgba(255, 255, 255, 0.25);
}

#game-canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  image-rendering: pixelated;
  background: #89cdf8;
}

.controls {
  margin: 0;
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  border-radius: 14px;
  background: rgba(6, 25, 46, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-soft);
  font-size: 0.92rem;
}

.controls strong {
  color: #fff7c9;
}

@media (max-width: 700px) {
  .app-shell {
    padding: 12px 8px 16px;
  }

  .title-wrap {
    gap: 4px;
    padding: 14px;
  }

  .controls {
    font-size: 0.85rem;
    gap: 6px 10px;
  }
}