*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg-top: #000a1a;
  --bg-bottom: #000408;
  --accent: #22d3ee;
  --accent-rgb: 34, 211, 238;
  --panel-border: rgba(var(--accent-rgb), 0.28);
  --text-main: #e0f7ff;
  --shadow: 0 14px 36px rgba(0, 4, 8, 0.7);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(var(--accent-rgb), 0.08), transparent 35%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom) 70%);
  color: var(--text-main);
  font-family: "Trebuchet MS", "Arial Narrow", Arial, sans-serif;
  display: grid;
  place-items: center;
}

.game-shell {
  width: min(100%, 560px);
  padding: 8px 8px 16px;
  padding-bottom: max(16px, env(safe-area-inset-bottom, 16px));
  display: grid;
  gap: 8px;
}

/* HUD */
.hud {
  display: grid;
  gap: 4px;
}

.hud-row {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.hud-primary {
  flex-wrap: wrap;
}

.hud-meta {
  min-height: 20px;
  font-size: 13px;
  color: rgba(var(--accent-rgb), 0.7);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hud-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  background: rgba(0, 10, 26, 0.85);
  font-size: 14px;
}

.hud-label {
  opacity: 0.6;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hud-value {
  font-weight: 700;
  color: var(--accent);
  font-size: 16px;
  min-width: 2ch;
  text-align: right;
}

/* Playfield */
.playfield {
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  display: block;
  width: 100%;
  max-width: 600px;
  aspect-ratio: 600 / 480;
  border-radius: 6px;
  box-shadow: var(--shadow), 0 0 0 1px var(--panel-border);
  image-rendering: -webkit-crisp-edges;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
}

/* Touch controls */
.touch-controls {
  display: grid;
  gap: 8px;
}

.touch-move-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.touch-btn {
  flex: 1;
  padding: 18px 8px;
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  background: rgba(0, 20, 40, 0.85);
  color: var(--text-main);
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  -webkit-touch-callout: none;
  transition: background 0.1s, border-color 0.1s;
}

.touch-btn:active,
.touch-btn.pressed {
  background: rgba(var(--accent-rgb), 0.18);
  border-color: rgba(var(--accent-rgb), 0.55);
}

.touch-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.touch-fire {
  font-size: 13px;
  letter-spacing: 0.12em;
  flex: 1.2;
  color: var(--accent);
  border-color: rgba(var(--accent-rgb), 0.45);
}

.restart-btn {
  width: 50%;
  margin: 0 auto;
  padding: 10px 16px;
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.15), rgba(var(--accent-rgb), 0.05));
  color: var(--text-main);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.restart-btn:hover,
.restart-btn:focus-visible {
  border-color: rgba(var(--accent-rgb), 0.55);
  background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.25), rgba(var(--accent-rgb), 0.1));
  outline: none;
}

/* Desktop: wider layout */
@media (min-width: 561px) {
  .game-shell {
    width: min(100vw, 700px);
  }
}