* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: #000;
  color: #fff;
  font-family: "Press Start 2P", monospace;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
button {
  font-family: inherit;
  cursor: pointer;
}
.back {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 5;
  color: #888;
  font-size: 13px;
  text-decoration: none;
}
.icon {
  position: fixed;
  top: 6px;
  right: 10px;
  z-index: 5;
  border: 0;
  background: none;
  font-size: 18px;
  opacity: 0.7;
}

.stage {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 30px 6px 10px;
}
.screen {
  position: relative;
}
#game {
  display: block;
  image-rendering: pixelated;
}

/* ---------- Màn mở đầu / tạm dừng ---------- */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 10px;
  background: #000;
  text-align: center;
}
.overlay.dim {
  background: rgba(0, 0, 0, 0.75);
}
.overlay h1 {
  margin: 0 0 6px;
  font-size: clamp(22px, 7vw, 40px);
  color: #ffff00;
  text-shadow:
    3px 3px 0 #ff8800,
    6px 6px 0 #c03000;
  letter-spacing: 2px;
}
.overlay h2 {
  margin: 0;
  font-size: 18px;
  color: #ffff00;
}
.cast {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: clamp(8px, 2.4vw, 11px);
  text-align: left;
}
.cast li {
  display: grid;
  grid-template-columns: 22px 70px auto;
  align-items: center;
  gap: 8px;
}
/* font pixel không có dấu tiếng Việt → chữ tiếng Việt dùng font thường */
.cast span,
.keys,
.play,
.overlay h2,
.back {
  font-family: "Be Vietnam Pro", Arial, sans-serif;
  font-weight: 800;
}
.cast span {
  color: #bbb;
  font-size: 1.25em;
  font-weight: 600;
  line-height: 1.5;
}
/* con ma mini vẽ bằng CSS */
.g {
  position: relative;
  width: 20px;
  height: 20px;
  border-radius: 10px 10px 2px 2px;
  background: var(--c);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 83% 82%, 67% 100%, 50% 82%, 33% 100%, 17% 82%, 0 100%);
}
.g::before,
.g::after {
  content: "";
  position: absolute;
  top: 5px;
  width: 6px;
  height: 7px;
  border-radius: 50%;
  background: radial-gradient(circle at 70% 55%, #2121ff 0 1.6px, #fff 1.8px);
}
.g::before {
  left: 3px;
}
.g::after {
  right: 3px;
}
.blinky {
  --c: #ff0000;
}
.pinky {
  --c: #ffb8ff;
}
.inky {
  --c: #00ffff;
}
.clyde {
  --c: #ffb852;
}
.pts {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 10px;
  color: #ffb8ae;
}
.pts .dot {
  width: 4px;
  height: 4px;
  background: #ffb8ae;
}
.pts .pellet {
  width: 12px;
  height: 12px;
  margin-left: 14px;
  border-radius: 50%;
  background: #ffb8ae;
}
.play {
  padding: 12px 20px;
  border: 3px solid #ffff00;
  border-radius: 6px;
  background: #000;
  color: #ffff00;
  font-size: 18px;
  letter-spacing: 1px;
  animation: blink 1s steps(2) infinite;
}
.play:hover {
  background: #ffff00;
  color: #000;
  animation: none;
}
@keyframes blink {
  50% {
    border-color: #886600;
  }
}
.keys {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  color: #777;
  line-height: 1.6;
}

/* ---------- Phím điều hướng cảm ứng ---------- */
.dpad {
  display: none;
  grid-template-columns: repeat(3, 58px);
  grid-template-rows: repeat(2, 50px);
  gap: 6px;
}
@media (pointer: coarse) {
  .dpad {
    display: grid;
  }
}
.dpad button {
  border: 2px solid #2121ff;
  border-radius: 10px;
  background: #0a0a2a;
  color: #8888ff;
  font-size: 18px;
  touch-action: none;
}
.dpad button:active,
.dpad button.on {
  background: #2121ff;
  color: #fff;
}
.dpad [data-d="up"] {
  grid-column: 2;
}
.dpad [data-d="left"] {
  grid-column: 1;
  grid-row: 2;
}
.dpad [data-d="down"] {
  grid-column: 2;
  grid-row: 2;
}
.dpad [data-d="right"] {
  grid-column: 3;
  grid-row: 2;
}