:root {
  --screen-green: #4e6042;
  --gb-dark: #0f380f;
  --gb-mid: #306230;
  --gb-light: #8bac0f;
  --gb-bg: #9bbc0f;
  --ui-bg: rgba(15, 56, 15, 0.92);
  --ui-text: #9bbc0f;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #2a3b2a 0%, #0d150d 70%);
  color: var(--ui-text);
  font-family: "Courier New", Courier, monospace;
  overflow: hidden;
}

.page {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 720px;
  padding: 16px;
}

/* ---------- 游戏机 ---------- */
.console-wrap {
  position: relative;
  width: min(92vw, 560px, 62vh);
  aspect-ratio: 1 / 1;
  user-select: none;
}

.console-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  pointer-events: none;
}

/* 屏幕区域：按原图 1476×1476 换算百分比
   屏幕区域 (375,205) ~ (1102,689)
   left: 25.4065%  top: 13.8889%  width: 49.3225%  height: 32.8591% */
.screen {
  position: absolute;
  left: 25.4065%;
  top: 13.8889%;
  width: 49.3225%;
  height: 32.8591%;
  background: var(--screen-green);
  overflow: hidden;
  border-radius: 4%;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.35);
}

#gameCanvas {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* ---------- 屏幕内 UI 覆盖层 ---------- */
.ui-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.ui-overlay > * {
  pointer-events: auto;
}

.hidden {
  display: none !important;
}

/* 开始菜单 */
.menu {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--ui-bg);
  text-align: center;
  padding: 8px;
}

.menu-title {
  font-size: clamp(14px, 3.2vw, 22px);
  letter-spacing: 2px;
  color: var(--gb-light);
  text-shadow: 2px 2px 0 var(--gb-dark);
}

.menu-sub {
  font-size: clamp(8px, 1.6vw, 12px);
  color: var(--gb-bg);
  opacity: 0.85;
}

.menu-btn {
  margin-top: 6px;
  padding: 8px 20px;
  font-family: inherit;
  font-size: clamp(10px, 2vw, 14px);
  font-weight: bold;
  color: var(--gb-dark);
  background: var(--gb-light);
  border: 3px solid var(--gb-dark);
  box-shadow: 0 4px 0 var(--gb-dark);
  cursor: pointer;
  letter-spacing: 2px;
}

.menu-btn:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--gb-dark);
}

.menu-hint {
  margin-top: 6px;
  font-size: clamp(7px, 1.4vw, 10px);
  color: var(--gb-bg);
  opacity: 0.7;
}

/* HUD */
.hud {
  position: absolute;
  top: 4px;
  left: 6px;
  display: flex;
  gap: 8px;
  font-size: clamp(8px, 1.6vw, 11px);
  color: var(--gb-dark);
  background: var(--gb-light);
  padding: 2px 6px;
  border: 2px solid var(--gb-dark);
}

/* 消息覆盖层 */
.msg-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ui-bg);
  color: var(--gb-bg);
  font-size: clamp(9px, 1.8vw, 13px);
  text-align: center;
  padding: 12px;
  line-height: 1.6;
  white-space: pre-line;
}

/* 失败覆盖层 */
.fail-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(127, 0, 0, 0.85);
  text-align: center;
  padding: 8px;
}

.fail-title {
  font-size: clamp(14px, 3.2vw, 22px);
  color: #fff;
  text-shadow: 2px 2px 0 #4a0000;
  letter-spacing: 2px;
}

/* 胜利覆盖层 */
.win-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: rgba(15, 56, 15, 0.92);
  text-align: center;
  padding: 8px;
}

.win-title {
  font-size: clamp(15px, 3.4vw, 22px);
  color: #f7d51d;
  text-shadow: 2px 2px 0 var(--gb-dark);
  letter-spacing: 2px;
}

.win-sub {
  font-size: clamp(8px, 1.6vw, 12px);
  color: var(--gb-bg);
  opacity: 0.85;
}

/* ---------- 虚拟按键（覆盖在机身实体按键位置） ---------- */
/* 定位基准是 .console-wrap（与机身图片同尺寸的正方形），
   因此所有百分比随机身等比例缩放，窗口变化时不会错位 */
.controls {
  position: absolute;
  inset: 0;
  pointer-events: none;
  user-select: none;
  touch-action: none;
  z-index: 3;
}

/* 方向键：对齐机身左侧十字实体键区域
   （实测自 console.png：黑色十字 bbox 25.3%~41.0% / 55.9%~71.1%） */
.dpad {
  position: absolute;
  left: 25.3%;
  top: 55.9%;
  width: 15.7%;
  height: 15.2%;
}

.dpad-btn {
  position: absolute;
  width: 33.333%;
  height: 33.333%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12%;
  cursor: pointer;
  pointer-events: auto;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.06s linear, border-color 0.06s linear;
}

.dpad-btn:active,
.dpad-btn.pressed {
  background: rgba(155, 188, 15, 0.5);
  border-color: rgba(155, 188, 15, 0.95);
}

.dpad-up    { top: 0;    left: 33.333%; }
.dpad-down  { bottom: 0; left: 33.333%; }
.dpad-left  { left: 0;   top: 33.333%; }
.dpad-right { right: 0;  top: 33.333%; }

/* 十字中心留空，不拦截指针事件 */
.dpad-center {
  position: absolute;
  top: 33.333%;
  left: 33.333%;
  width: 33.333%;
  height: 33.333%;
  pointer-events: none;
}

/* A/B：对齐机身右下两颗圆形实体键 */
.ab-btns {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.btn {
  position: absolute;
  width: 6.8%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: clamp(8px, 1.5vh, 14px);
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.35);
  cursor: pointer;
  pointer-events: auto;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(0, 0, 0, 0.22);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.1);
  transition: background 0.06s linear;
}

.btn:active {
  background: rgba(0, 0, 0, 0.22);
}

/* 实测 console.png：A 粉键 57.8%~64.2% / 58.1%~64.5%，B 青绿键 68.3%~74.7% */
.btn-a {
  left: 57.8%;
  top: 58.1%;
  border-color: rgba(214, 51, 132, 0.6);
}

.btn-b {
  left: 68.3%;
  top: 58.1%;
  border-color: rgba(32, 201, 151, 0.6);
}

.page-hint {
  font-size: 12px;
  color: rgba(155, 188, 15, 0.55);
  letter-spacing: 1px;
}

/* ---------- 底部信息 / 音效设置（位于机身之外，不遮挡迷宫） ---------- */
.page-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 16px;
}

.sound-panel {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sound-btn {
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--gb-dark);
  background: var(--gb-light);
  border: 2px solid var(--gb-dark);
  box-shadow: 0 2px 0 var(--gb-dark);
  padding: 3px 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.sound-btn:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 var(--gb-dark);
}

.sound-btn.muted {
  color: #2b3317;
  background: #6b7a4a;
  box-shadow: 0 2px 0 #1c2410;
}

.sound-volume {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: rgba(155, 188, 15, 0.7);
}

.sound-volume input[type="range"] {
  width: 84px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--gb-mid);
  border: 1px solid var(--gb-dark);
  cursor: pointer;
}

.sound-volume input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 9px;
  height: 14px;
  background: var(--gb-light);
  border: 2px solid var(--gb-dark);
  border-radius: 0;
}

.sound-volume input[type="range"]::-moz-range-thumb {
  width: 9px;
  height: 14px;
  background: var(--gb-light);
  border: 2px solid var(--gb-dark);
  border-radius: 0;
}

.sound-volume input[type="range"]:disabled {
  opacity: 0.4;
  cursor: default;
}