:root {
  --bg: #06040f;
  --panel: #120d24;
  --text: #f5eeff;
  --muted: #b8aed8;
  --accent: #61e7ff;
  --pink: #ff4cc8;
  --lime: #d1ff65;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px 12px;
  color: var(--text);
  font-family: "Trebuchet MS", "Verdana", system-ui, sans-serif;
  background:
    radial-gradient(circle at 15% 5%, rgba(109, 90, 255, 0.35), transparent 46%),
    radial-gradient(circle at 85% 0%, rgba(255, 77, 197, 0.28), transparent 48%),
    #06040f;
}

.app {
  width: min(860px, 100%);
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015));
  border: 1px solid #3d2f63;
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 22px 54px rgba(0, 0, 0, 0.5);
}

.back {
  color: #93dfff;
  text-decoration: none;
  font-size: 0.95rem;
}

h1 {
  margin: 8px 0 6px;
  font-size: clamp(1.35rem, 3vw, 2.1rem);
  letter-spacing: 0.05em;
}

.topbar p {
  margin: 0 0 14px;
  color: var(--muted);
}

.hud {
  display: grid;
  grid-template-columns: repeat(4, minmax(80px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.hud > div {
  background: rgba(13, 10, 31, 0.85);
  border: 1px solid #40316b;
  border-radius: 11px;
  padding: 10px;
  display: grid;
  gap: 3px;
}

.label {
  color: #a89cc8;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

strong {
  font-size: 1.15rem;
  color: #fef7ff;
}

.playfield-wrap {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #4c3f72;
  background: #070612;
}

#playfield {
  width: 100%;
  height: auto;
  display: block;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 12px;
  text-align: center;
  padding: 16px;
  background: linear-gradient(180deg, rgba(7, 6, 18, 0.48), rgba(7, 6, 18, 0.82));
  backdrop-filter: blur(2px);
}

.overlay.hidden {
  display: none;
}

.overlay h2 {
  margin: 0;
  font-size: clamp(1.2rem, 3vw, 1.9rem);
  letter-spacing: 0.05em;
}

.overlay p {
  margin: 0;
  color: #ded3ff;
  max-width: 560px;
}

kbd {
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid #7158af;
  background: rgba(255, 255, 255, 0.06);
  font: inherit;
}

.overlay-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

button {
  border: 1px solid #4a3d75;
  border-radius: 10px;
  padding: 10px 15px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.primary {
  background: linear-gradient(180deg, #74efff, #3ec0f5);
  border-color: #adf4ff;
  color: #04213b;
}

.ghost {
  background: rgba(28, 21, 53, 0.85);
  color: #f8f2ff;
}

.touch-controls {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.touch-controls button {
  background: rgba(24, 17, 47, 0.92);
  color: #efe8ff;
  padding: 11px;
}

.tip {
  margin: 12px 2px 2px;
  color: #b8add8;
  font-size: 0.92rem;
}

@media (max-width: 640px) {
  .hud {
    grid-template-columns: repeat(2, minmax(100px, 1fr));
  }
}