/* ── 主题变量（与主站 globals.css 保持同步） ── */
:root {
  --radius: 0.625rem;
  --background: oklch(1 0 0);
  --foreground: oklch(0.145 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.145 0 0);
  --primary: oklch(20.463% 0.00002 271.152);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.90 0 150);
  --secondary-foreground: oklch(0.205 0 0);
  --muted: oklch(0.95 0 271);
  --muted-foreground: oklch(0.556 0 0);
  --accent: oklch(0.87 0 271);
  --accent-foreground: oklch(0.205 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --border: oklch(0.922 0 0);
  --input: oklch(0.922 0 0);
  --ring: oklch(0.708 0 0);
}

.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.205 0 0);
  --card-foreground: oklch(0.985 0 0);
  --primary: oklch(0.922 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.269 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --accent: oklch(0.269 0 0);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.704 0.191 22.216);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.556 0 0);
}

* { margin:0; padding:0; box-sizing: border-box; }
html, body {
  width:100%;
  height:100%;
  overflow: hidden;
  background-color: transparent;
  color: var(--foreground);
  font-family: 'HarmonyOS Sans SC', ui-sans-serif, system-ui, sans-serif;
  /* 禁止横向滑动触发浏览器前进/后退 */
  overscroll-behavior: none;
  overscroll-behavior-x: none;
  touch-action: none;
}
canvas {
  display:block;
  background: transparent !important;
  touch-action: none;
}

/* 加载遮罩与进度条 */
.loader {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--background);
    z-index: 1000;
    transition: opacity .35s ease;
    opacity: 1;
    pointer-events: auto;
}
.loader.hidden {
    opacity: 0;
    pointer-events: none;
}
.loader-inner { width: min(420px, 80vw); text-align: center; }
.loader .progress { height: 8px; background: var(--secondary); border-radius: 4px; overflow: hidden; }
.loader .bar { height: 100%; width: 0%; background: var(--primary); border-radius: 4px; transition: width .2s ease; }
.loader .tip { margin-top: 10px; color: var(--muted-foreground); font-size: 14px; letter-spacing: .5px; }
.loader-retry {
  margin-top: 14px;
  padding: 8px 18px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary-foreground);
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
}
.loader-retry[hidden] { display: none !important; }

/* 前置页面样式 */
.start-page {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: transparent;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
}

.difficulty-container {
  text-align: center;
  color: var(--foreground);
}

.game-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--foreground);
  text-shadow: 0 0 20px color-mix(in oklch, var(--foreground) 20%, transparent);
}

/* 导入种子按钮样式 */
.import-seed-btn {
  background-color: var(--secondary);
  border-color: var(--border);
  color: var(--secondary-foreground);
  margin-top: 1rem;
}

.import-seed-btn:hover {
  background-color: color-mix(in oklch, var(--secondary) 80%, transparent);
  border-color: var(--border);
  color: var(--secondary-foreground);
}

/* 种子导入弹窗样式 */
.seed-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: color-mix(in oklch, var(--background) 80%, transparent);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.seed-modal-content {
  background-color: var(--card);
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  text-align: center;
  color: var(--card-foreground);
  min-width: 350px;
}

.seed-modal-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--foreground);
}

.seed-import-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  background-color: var(--background);
  color: var(--foreground);
  border: 1px solid var(--input);
  border-radius: var(--radius);
  text-align: center;
  margin-bottom: 1.5rem;
  box-sizing: border-box;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.seed-import-input:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 1px var(--ring);
}

.seed-modal-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1rem;
}

.seed-modal-btn {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  background-color: var(--primary);
  color: var(--primary-foreground);
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s;
  min-width: 80px;
}

.seed-modal-btn:hover {
  background-color: color-mix(in oklch, var(--primary) 90%, transparent);
}

.seed-modal-btn.cancel {
  background-color: var(--destructive);
  color: var(--destructive-foreground);
}

.seed-modal-btn.cancel:hover {
  background-color: color-mix(in oklch, var(--destructive) 90%, transparent);
}

.seed-info {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

/* 复制种子按钮样式 */
.copy-seed-btn {
  background-color: var(--secondary);
  border-color: var(--border);
  color: var(--secondary-foreground);
}

.copy-seed-btn:hover {
  background-color: color-mix(in oklch, var(--secondary) 80%, transparent);
  border-color: var(--border);
  color: var(--secondary-foreground);
}

.difficulty-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.difficulty-btn {
  padding: 1rem 2rem;
  font-size: 1.25rem;
  font-weight: 500;
  background-color: var(--card);
  color: var(--card-foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 300px;
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.difficulty-btn:hover {
  background-color: var(--accent);
  color: var(--accent-foreground);
  border-color: var(--border);
  transform: translateY(-2px);
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
}

.difficulty-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

/* 噩梦难度按钮样式 - 只在PC端显示 */
.nightmare-mode {
  background-color: color-mix(in oklch, var(--destructive) 10%, transparent);
  border-color: color-mix(in oklch, var(--destructive) 20%, transparent);
  color: var(--destructive);
}

.nightmare-mode:hover {
  background-color: color-mix(in oklch, var(--destructive) 20%, transparent);
  border-color: color-mix(in oklch, var(--destructive) 30%, transparent);
  color: var(--destructive);
}

/* 游戏页面样式 */
.game-page {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: transparent;
  touch-action: none;
  overscroll-behavior: none;
}

#gameCanvas {
  display: flex;
  justify-content: center;
  align-items: center;
  touch-action: none;
  overscroll-behavior: none;
}

/* 游戏控制按钮样式 */
.game-controls {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 100;
  display: flex;
  gap: 10px;
}

.control-btn {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  background-color: var(--secondary);
  color: var(--secondary-foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.control-btn:hover {
  background-color: color-mix(in oklch, var(--secondary) 80%, transparent);
  border-color: var(--border);
}

.control-btn:active {
  background-color: color-mix(in oklch, var(--secondary) 90%, transparent);
}


@media (max-width: 768px) {
  #gameCanvas {
    transform: translateY(-4vh); 
  }
}

@media (max-width: 768px) {
  .difficulty-container {
    transform: translateY(-10vh); 
  }
}

@media (max-width: 768px) {
  .difficulty-container .game-title {
    font-size: 2.5rem !important;
    margin-bottom: 2rem !important;
  }
  
  .difficulty-container .difficulty-buttons {
    gap: 1rem !important;
  }
  
  .difficulty-container .difficulty-btn {
    padding: 0.875rem 1.5rem !important;
    font-size: 1.125rem !important;
    min-width: 280px !important;
  }
  
  /* 移动端游戏控制按钮优化 */
  .game-controls {
    top: 15px;
    left: 15px;
    gap: 8px;
  }
  
  .control-btn {
    padding: 6px 10px;
    font-size: 0.875rem;
    min-width: 60px;
    border-radius: var(--radius);
  }
  
  /* 移动端隐藏噩梦难度按钮 */
  .nightmare-mode {
    display: none;
  }
}