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

:root {
  --bg-top: #1a0e00;
  --bg-bottom: #080400;
  --accent: #f59e0b;
  --accent-rgb: 245, 158, 11;
  --panel-border: rgba(var(--accent-rgb), 0.28);
  --text-main: #fef9f0;
  --shadow: 0 14px 36px rgba(8, 3, 0, 0.48);
}

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

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(var(--accent-rgb), 0.12), transparent 40%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom) 70%);
  color: var(--text-main);
  font-family: "Trebuchet MS", "Arial Narrow", Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.game-shell {
  display: grid;
  grid-template-rows: auto 1fr auto;
  width: min(100vw, 560px);
  max-height: 100vh;
  gap: 6px;
  padding: 8px;
}

/* ── HUD ── */
.hud {
  display: flex;
  justify-content: space-around;
  gap: 8px;
  padding: 6px 0;
}

.hud-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(20, 10, 0, 0.85);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 4px 18px;
  box-shadow: var(--shadow);
  min-width: 70px;
}

.hud-label {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.8;
}

.hud-value {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

/* ── Playfield ── */
.playfield {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 800 / 600;
  min-height: 0;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  background: #000;
}

/* ── Touch Controls ── */
.touch-controls {
  display: grid;
  grid-template-columns: 1fr auto auto 1fr;
  gap: 8px;
  padding: 6px 0;
  align-items: center;
  justify-items: center;
}

.ctrl-btn {
  appearance: none;
  background: rgba(20, 10, 0, 0.85);
  border: 1px solid var(--panel-border);
  border-radius: 50%;
  color: var(--text-main);
  font-size: 22px;
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  box-shadow: var(--shadow);
  transition: border-color 0.1s, background 0.1s;
}

.ctrl-btn:active,
.ctrl-btn.active {
  background: rgba(var(--accent-rgb), 0.18);
  border-color: rgba(var(--accent-rgb), 0.6);
}

.fire-btn {
  background: rgba(var(--accent-rgb), 0.12);
  border-color: rgba(var(--accent-rgb), 0.45);
  color: var(--accent);
  font-size: 18px;
}

/* Desktop: wider layout */
@media (min-width: 600px) {
  .game-shell {
    width: min(100vw, 760px);
    gap: 10px;
    padding: 16px;
  }

  .hud {
    justify-content: center;
    gap: 24px;
  }

  .hud-chip {
    min-width: 90px;
    padding: 6px 24px;
  }

  .hud-label { font-size: 11px; }
  .hud-value { font-size: 24px; }

  .ctrl-btn {
    width: 60px;
    height: 60px;
    font-size: 26px;
  }
}