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

:root {
  --bg-top: #0a0a1a;
  --bg-bottom: #04040e;
  --accent: #ffff00;
  --accent-rgb: 255, 255, 0;
  --panel-border: rgba(var(--accent-rgb), 0.22);
  --text-main: #fef9f0;
  --shadow: 0 14px 36px rgba(4, 4, 14, 0.6);
  --button-bg: rgba(30, 30, 80, 0.9);
  --button-hover: rgba(50, 50, 120, 0.95);
  --chip-bg: rgba(10, 10, 40, 0.85);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(var(--accent-rgb), 0.08), transparent 30%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom) 62%);
  color: var(--text-main);
  font-family: "Trebuchet MS", "Arial Narrow", Arial, sans-serif;
  display: grid;
  place-items: start center;
}

.game-shell {
  width: min(100vw, 840px);
  padding: 16px 8px 24px;
  display: grid;
  gap: 12px;
  align-items: start;
  justify-items: center;
}

/* ── HUD ─────────────────────────────────────────────── */

.hud {
  width: 100%;
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.stat-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 18px;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: var(--chip-bg);
  box-shadow: var(--shadow);
  min-width: 80px;
}

.stat-chip .label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(var(--accent-rgb), 0.7);
}

.stat-chip strong {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: 0.04em;
}

/* ── Canvas ──────────────────────────────────────────── */

canvas {
  display: block;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  box-shadow: 0 0 32px rgba(var(--accent-rgb), 0.08), var(--shadow);
  max-width: 100%;
  height: auto;
}

/* ── Touch controls ──────────────────────────────────── */

.touch-controls {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: start;
}

.thumb-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  background: rgba(10, 10, 30, 0.7);
}

.control-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(var(--accent-rgb), 0.5);
}

/* D-pad grid */
.dpad {
  display: grid;
  grid-template-areas:
    ". up ."
    "left . right"
    ". down .";
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(3, 52px);
  gap: 4px;
}

.dpad-btn {
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  background: var(--button-bg);
  color: var(--text-main);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.1s, transform 0.08s;
}

.dpad-btn:active {
  background: var(--button-hover);
  transform: scale(0.93);
}

.dpad-btn[data-action="up"]    { grid-area: up; }
.dpad-btn[data-action="left"]  { grid-area: left; }
.dpad-btn[data-action="down"]  { grid-area: down; }
.dpad-btn[data-action="right"] { grid-area: right; }

/* Action zone */
.action-zone {
  min-width: 80px;
}

.action-button {
  padding: 12px 18px;
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  background: var(--button-bg);
  color: var(--text-main);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  transition: background 0.1s, transform 0.08s;
  white-space: nowrap;
}

.action-button:active {
  background: var(--button-hover);
  transform: scale(0.95);
}

/* ── Responsive — portrait (mobile) ─────────────────── */

@media (max-width: 600px) {
  .game-shell {
    padding: 10px 6px 16px;
    gap: 8px;
  }

  canvas {
    width: 100%;
    height: auto;
  }

  .touch-controls {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .dpad {
    grid-template-columns: repeat(3, 46px);
    grid-template-rows: repeat(3, 46px);
  }

  .dpad-btn {
    font-size: 16px;
    border-radius: 10px;
  }

  .stat-chip {
    padding: 5px 12px;
    min-width: 64px;
  }

  .stat-chip strong {
    font-size: 16px;
  }
}