:root {
  --bg-top: #04060f;
  --bg-mid: #071629;
  --bg-bottom: #02111e;
  --panel: #061928;
  --panel-border: #1a536b;
  --scanline: rgba(123, 237, 255, 0.04);
  --hud: #d8ffff;
  --accent: #ff8c42;
  --accent-alt: #5de2e7;
  --text-soft: #9fcad3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(93, 226, 231, 0.12) 0, rgba(93, 226, 231, 0) 42%),
    radial-gradient(circle at 82% 76%, rgba(255, 140, 66, 0.16) 0, rgba(255, 140, 66, 0) 44%),
    linear-gradient(170deg, var(--bg-top), var(--bg-mid) 45%, var(--bg-bottom));
  color: var(--hud);
  font-family: "VT323", monospace;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to bottom, transparent 48%, var(--scanline) 50%, transparent 52%);
  background-size: 100% 4px;
  opacity: 0.45;
}

.game-shell {
  width: min(95vw, 560px);
  display: grid;
  gap: 0.8rem;
  padding: 1rem 0.8rem 1.2rem;
}

.hud {
  background: linear-gradient(180deg, rgba(7, 29, 45, 0.95), rgba(3, 16, 27, 0.95));
  border: 2px solid var(--panel-border);
  border-radius: 12px;
  padding: 0.45rem 0.6rem;
  display: flex;
  justify-content: space-between;
  gap: 0.4rem;
}

.hud-item {
  display: grid;
  justify-items: center;
  min-width: 30%;
}

.hud-label {
  font-family: "Press Start 2P", monospace;
  font-size: 0.58rem;
  letter-spacing: 0.05em;
  color: var(--text-soft);
  text-transform: uppercase;
}

.hud-item strong {
  font-size: 1.9rem;
  letter-spacing: 0.04em;
  color: var(--hud);
  text-shadow: 0 0 14px rgba(93, 226, 231, 0.35);
}

.canvas-wrap {
  position: relative;
  border: 3px solid var(--panel-border);
  border-radius: 14px;
  overflow: hidden;
  background: #00050d;
  box-shadow:
    0 0 0 2px rgba(255, 140, 66, 0.25),
    0 16px 40px rgba(0, 0, 0, 0.45);
}

#game {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  display: block;
  image-rendering: pixelated;
  touch-action: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-content: center;
  justify-items: center;
  gap: 0.9rem;
  text-align: center;
  padding: 1rem;
  background: linear-gradient(180deg, rgba(5, 13, 24, 0.82), rgba(2, 8, 18, 0.92));
}

.overlay.visible {
  display: grid;
}

#overlayTitle {
  margin: 0;
  text-transform: uppercase;
  font-family: "Press Start 2P", monospace;
  font-size: clamp(1.5rem, 6vw, 2.1rem);
  letter-spacing: 0.08em;
  color: #ffffff;
  text-shadow:
    0 0 14px rgba(93, 226, 231, 0.35),
    0 0 22px rgba(255, 140, 66, 0.2);
}

#overlayText {
  margin: 0;
  max-width: 34ch;
  font-size: 1.55rem;
  line-height: 1.15;
  color: var(--text-soft);
}

#startBtn {
  border: 2px solid var(--accent);
  background: linear-gradient(180deg, #ff9e57, #ef7630);
  color: #1f0d00;
  border-radius: 999px;
  padding: 0.55rem 1.2rem;
  font-family: "Press Start 2P", monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

#startBtn:hover,
#startBtn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(255, 140, 66, 0.35);
  outline: none;
}

.mobile-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(60px, 1fr));
  gap: 0.5rem;
}

.control-btn {
  border: 2px solid rgba(93, 226, 231, 0.7);
  background: linear-gradient(180deg, rgba(16, 50, 69, 0.9), rgba(10, 32, 44, 0.95));
  color: #dbffff;
  border-radius: 10px;
  min-height: 52px;
  font-family: "Press Start 2P", monospace;
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
}

.control-btn.fire {
  color: #ffd8bf;
  border-color: rgba(255, 140, 66, 0.85);
}

.control-btn.active {
  transform: translateY(1px) scale(0.985);
  filter: brightness(1.14);
}

.hint {
  margin: 0;
  text-align: center;
  color: var(--text-soft);
  font-size: 1.3rem;
  letter-spacing: 0.03em;
}

@media (min-width: 821px) {
  .game-shell {
    width: min(88vw, 590px);
  }

  .mobile-controls {
    max-width: 420px;
    justify-self: center;
  }
}