/* ===== 桌面容器与壁纸 ===== */
#home-page {
  /* 桌面与 Dock 共用的图标背景视觉参数：只有这一处定义，改这里两边同步 */
  --icon-bg-size: 60px;
  --icon-bg-radius: 14px;

  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;

  background: #f6f6f6;
}

/* 顶部状态栏安全区占位：纯 spacer，无背景，允许吃在 height 上 */
.status-bar {
  height: var(--sat);
  min-height: 0;
  flex-shrink: 0;
}

.desktop-viewport {
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ===== 图标网格 ===== */
.desktop-page {
  width: 100%;
  height: 100%;
  padding: 16px 20px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-template-rows: repeat(var(--desktop-grid-rows), minmax(0, 1fr));
  gap: 20px 12px;                 /* 行距 20，列距 12 */
  align-content: stretch;
}

/* 单个图标「图标底 + 文字标签」 */
.app-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 4px;
  align-self: start;
  transition: transform 0.15s var(--ease), opacity 0.15s;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
.app-icon:active {
  transform: scale(0.85);
  opacity: 0.75;
}

.icon-label {
  font-size: 11px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--c-title);
  text-align: center;
  white-space: nowrap;
  max-width: 72px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== Dock 栏 ===== */
.dock-area {
  flex-shrink: 0;
  padding: 6px 24px;
  padding-bottom: calc(8px + var(--sab));
}

.dock-glass {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 28px;
  position: relative;
  overflow: hidden;
}

.dock-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  flex: 1 1 0;
  max-width: 78px;
  min-width: 0;
  padding: 4px 8px;
  cursor: pointer;
  transition: all 0.15s var(--ease);
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
.dock-item:active {
  transform: scale(0.88);
}
/*
 * Dock 名称不显示，不占位：display: none ，图标下方不会留下名称高度。
 * 名称数据仍留在 DOM 和 aria-label 里，供无障碍朗读和后续「应用移动」功能使用。
 */
.dock-item span {
  display: none;
}

/* ===== 玻璃效果 ===== */
.icon-bg {
  width: var(--icon-bg-size);
  height: var(--icon-bg-size);
  border-radius: var(--icon-bg-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px) saturate(180%) brightness(1.05);
  -webkit-backdrop-filter: blur(20px) saturate(180%) brightness(1.05);
  border: none;                  /* 边框由 ::before / ::after 画 */
  box-shadow: none;
  position: relative;
  overflow: hidden;
}

.dock-icon-bg {
  width: var(--icon-bg-size);
  height: var(--icon-bg-size);
  border-radius: var(--icon-bg-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px) saturate(180%) brightness(1.05);
  -webkit-backdrop-filter: blur(20px) saturate(180%) brightness(1.05);
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.035);
  position: relative;
  overflow: hidden;
}

.dock-glass {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: none;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.04);
}

/*
 * 局部玻璃边缘：完整 0.8px 圆角描边由椭圆遮罩裁成两个角落。
 * 椭圆横纵半径均按元素自身尺寸计算，因此方形图标和长条 Dock 均可自适应。
 * 分别沿每条边在约 25% 后渐隐，并在约 80% 处完全消失。
 */
.icon-bg,
.dock-icon-bg,
.dock-glass,
.dev-banner {
  --glass-edge-highlight: rgba(255, 255, 255, 0.4);
  --glass-edge-soft: rgba(255, 255, 255, 0.14);
}

/* 两个伪元素的公共部分 */
.icon-bg::before,
.dock-icon-bg::before,
.dock-glass::before,
.dev-banner::before,
.icon-bg::after,
.dock-icon-bg::after,
.dock-glass::after,
.dev-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  border: 0.8px solid transparent;
  border-radius: inherit;
  pointer-events: none;
}

/* ::before —— 左上角高光弧 */
.icon-bg::before,
.dock-icon-bg::before,
.dock-glass::before {
  border-color: var(--glass-edge-highlight);
  -webkit-mask-image: radial-gradient(
    ellipse 100% 100% at top left,
    #000 0%,
    #000 25%,
    transparent 80%
  );
  mask-image: radial-gradient(
    ellipse 100% 100% at top left,
    #000 0%,
    #000 25%,
    transparent 80%
  );
}

/* ::after —— 右下角弱光弧 */
.icon-bg::after,
.dock-icon-bg::after,
.dock-glass::after {
  border-color: var(--glass-edge-soft);
  -webkit-mask-image: radial-gradient(
    ellipse 100% 100% at bottom right,
    #000 0%,
    #000 25%,
    transparent 80%
  );
  mask-image: radial-gradient(
    ellipse 100% 100% at bottom right,
    #000 0%,
    #000 25%,
    transparent 80%
  );
}

/* 图标字形颜色：reicon 内部用 currentColor */
.icon-bg,
.dock-icon-bg {
  color: var(--icon-color, var(--c-accent-dark));
}

/* ===== 功能开发中提示横幅 ===== */
/*
 * 绝对定位悬浮层，脱离 #home-page 的 flex 流：
 * 显示、换文案、隐藏都不会让图标网格或 Dock 产生任何位移。
 * 水平居中用 left/right: 0 + margin: auto，把 transform 完整留给滑入动画。
 */
.dev-banner {
  position: absolute;
  top: calc(var(--sat) + 12px);        /* 相加不是取大，必须避开刘海/状态栏 */
  left: 0;
  right: 0;
  z-index: 20;
  width: max-content;
  max-width: calc(100% - 40px);
  margin: 0 auto;
  padding: 9px 18px;
  border-radius: var(--r-pill);

  font-size: 13px;
  line-height: 1.3;
  color: var(--c-text);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;

  /* 半透明玻璃底：比图标底更实一些，保证压在壁纸/图标上时文字依旧清晰 */
  background: rgba(255, 255, 255, 0.62);
  backdrop-filter: blur(20px) saturate(180%) brightness(1.05);
  -webkit-backdrop-filter: blur(20px) saturate(180%) brightness(1.05);
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.06);

  pointer-events: none;                /* 纯提示，绝不拦截桌面点击 */

  /* 隐藏态：visibility 延后到淡出结束再切，避免残留文本被拾取 */
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity 0.18s var(--ease),
    transform 0.18s var(--ease),
    visibility 0s linear 0.18s;
}

.dev-banner.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition:
    opacity 0.22s var(--ease),
    transform 0.22s var(--ease),
    visibility 0s;
}

/* 减弱动态效果：取消位移，直接显示，隐藏保留一次极短淡出 */
@media (prefers-reduced-motion: reduce) {
  .dev-banner {
    transform: none;
    transition:
      opacity 0.15s linear,
      visibility 0s linear 0.15s;
  }
  .dev-banner.show {
    transform: none;
    transition: opacity 0s, visibility 0s;
  }
}