/* ========================================
   全局重置样式 - 消除所有白边
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;

  /* 禁止浏览器根据 DPI/可读性自动改字体大小（跨浏览器一致性关键） */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

html {
  /* 统一 rem/em 基准：不允许浏览器默认值漂移 */
  font-size: 16px;
}

html, body {
  margin: 0 !important;
  padding: 0 !important;
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #000000;
}

/* 所有主要容器 */
#homeContent,
#loadingScreen,
#main-content,
.overlay-container,
.overlay-mask {
  margin: 0 !important;
  padding: 0 !important;
}

/* ========================================
   Overlay 样式 + 响应式优化
   ======================================== */

/* 主包裹容器 - 为了支持背景模糊 */
#main-content {
  transition: filter 0.3s ease, transform 0.3s ease;
  will-change: filter, transform;
}

#main-content.blurred {
  filter: blur(8px);
  transform: scale(0.98);
}

/* Overlay 遮罩层 */
.overlay-mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 9998;
  opacity: 0;
  transition: opacity 0.3s ease;
  display: none;
}

.overlay-mask.active {
  display: block;
  opacity: 1;
}

/* ========== Overlay 容器 - 统一缩放系统 ========== */
:root {
  --bg-scale: 1.0;
  --ui-scale: 1.0;
}

.overlay-container {
  /* 固定为设计稿尺寸 1440x900 */
  position: fixed;
  width: 1440px !important;
  height: 900px !important;
  
  /* 绝对居中（稳定方案）*/
  top: 50% !important;
  left: 50% !important;
  
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  
  /* 【关键】使用统一的 --ui-scale 变量 */
  transform: translate(-50%, -50%) scale(var(--ui-scale));
  transform-origin: center center;
  
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.overlay-container.active {
  opacity: 1;
  pointer-events: auto;
  /* transform 保持不变，只改 opacity */
}

/* 【响应式】Overlay内容容器 */
.overlay-container > div[data-layer^="overlay"] {
  /* 内容填充父容器，不额外缩放 */
  width: 100%;
  height: 100%;
  position: relative;
  
  /* 禁用可能干扰的属性 */
  transform: none !important;
  max-width: none !important;
  max-height: none !important;
  
  /* 字体标准化 */
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* 【性能】GPU加速overlay内容 */
.overlay-container > div {
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* CD 和 Bookcover 内容直接显示，添加阴影增强层次感 */
.overlay-container > div[data-layer="overlay_CD"],
.overlay-container > div[data-layer="overlay_bookcover"] {
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  border-radius: 12px;
  overflow: hidden;
}

/* Calendar overlay - 1296x810 透明背景，无额外约束 */
.overlay-container > div[data-layer="overlay-calendar"] {
  max-width: 100vw;
  max-height: 100vh;
}

/* 内置关闭按钮样式增强 - 确保跨浏览器可点击 */
[data-layer="CD-close"],
[data-layer="bookcover-close"],
[data-layer="bookpage-close"],
[data-layer="calendar-close"],
[data-layer="message-close"],
[data-layer="foxtalk-close"],
[data-layer="hotspot-foxtalk-close"] {
  cursor: pointer !important;
  pointer-events: auto !important;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
  will-change: transform, opacity;
}

[data-layer="CD-close"]:hover,
[data-layer="bookcover-close"]:hover,
[data-layer="calendar-close"]:hover,
[data-layer="message-close"]:hover,
[data-layer="hotspot-foxtalk-close"]:hover {
  transform: scale(1.1);
  opacity: 0.8;
}

[data-layer="CD-close"]:active,
[data-layer="bookcover-close"]:active,
[data-layer="calendar-close"]:active,
[data-layer="message-close"]:active,
[data-layer="hotspot-foxtalk-close"]:active {
  transform: scale(0.95);
  opacity: 0.6;
}

/* 【浏览器兼容】强制关闭按钮及其所有子元素可点击 */
[data-layer*="close"] *,
[data-layer*="close"] svg,
[data-layer*="close"] path,
[data-layer*="close"] rect {
  pointer-events: auto !important;
  cursor: pointer !important;
}

/* 【性能优化】图片/视频加载优化 */
img, video {
  will-change: transform, opacity;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

img[data-lazy-src] {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

img.loaded, video.loaded {
  animation: fadeIn 0.3s ease-in;
}

img.error {
  background: #ffebee;
  border: 2px dashed #ef5350;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 【性能】减少重绘和回流 */
* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 【浏览器兼容】统一滚动行为 */
html {
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

/* 【移动端优化】防止意外缩放 */
@media (max-width: 768px) {
  body {
    touch-action: pan-x pan-y;
  }
  
  [data-layer*="hotspot"] {
    min-width: 44px;
    min-height: 44px;
  }
}
[data-layer="message-close"]:active,
[data-layer="hotspot-foxtalk-close"]:active {
  transform: scale(0.95);
}

/* 禁止背景滚动 */
body.overlay-open {
  overflow: hidden;
  height: 100vh;
}

/* 响应式适配 */
@media (max-width: 1100px) {
  .overlay-content iframe,
  .overlay-content > div {
    width: 90vw;
    height: 80vh;
  }
  
  .overlay-close-btn {
    top: 10px;
    right: 10px;
  }
}

@media (max-width: 768px) {
  .overlay-content iframe,
  .overlay-content > div {
    width: 95vw;
    height: 85vh;
  }
}

/* ========================================
   翻页动画 - bookcover -> bookpage
   ======================================== */

/* 新页面从右侧滑入 */
.page-slide-in {
  animation: pageSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes pageSlideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* 旧页面向左滑出 */
.page-slide-out {
  animation: pageSlideOut 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes pageSlideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(-30%);
    opacity: 0;
  }
}

/* bookcoverstart 按钮可点击样式 */
[data-layer="bookcoverstart"] {
  cursor: pointer !important;
  pointer-events: auto !important;
}

[data-layer="bookcoverstart"]:hover {
  opacity: 0.85;
}

/* ======================================== */

/* 动画关键帧（备用） */
@keyframes overlayFadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes overlayFadeOut {
  from {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  to {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
  }
}

/* ========================================
   FoxTalk Pixel Animation & Styles
   ======================================== */
@keyframes fox-pixel-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

[data-layer='foxtalk-next-btn']:hover {
  filter: brightness(1.2);
}