/* ============================================
   MY UNIVERSE — 散落在桌面上的真实文件夹 + emoji 贴纸
   ============================================ */

.universe-page {
  position: relative;
  min-height: calc(100vh - var(--menu-bar-h));
  min-height: calc(100svh - var(--menu-bar-h));
  padding: 0 var(--sp-4) 90px;
  overflow: hidden;
}

/* —— 桌面舞台 —— */
.u-stage {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1180px;
  height: clamp(520px, calc(100svh - var(--menu-bar-h) - 110px), 780px);
  margin: 0 auto;
}

/* —— 桌面纸条 —— */
.universe-note {
  position: absolute;
  z-index: 7;
  left: 2%;
  top: 1.5%;
  transform: rotate(-5deg);
  font-family: var(--font-hand);
  font-size: 12px;
  color: var(--ink-soft);
  pointer-events: none;
}

/* —— 文件夹容器 —— */
.u-folder {
  position: absolute;
  display: block;
  text-decoration: none;
  color: inherit;
  outline: none;
  transition: transform var(--dur-med) var(--ease-spring), filter var(--dur-med);
  filter: drop-shadow(0 14px 18px rgba(44, 56, 30, .22));
}
.u-folder:hover {
  transform: rotate(0deg) translateY(-8px) scale(1.06);
  z-index: 9;
  filter: drop-shadow(0 26px 34px rgba(44, 56, 30, .30));
}
.u-folder:active { transform: rotate(0deg) translateY(-3px) scale(1.02); }
.u-folder:focus-visible {
  outline: 3px dashed var(--red);
  outline-offset: 6px;
  border-radius: 18px;
}

.folder-img-wrap {
  width: 100%;
  /* 真实文件夹是横向宽扁的，大致 1.35:1 */
  aspect-ratio: 1.35 / 1;
  display: grid;
  place-items: center;
}
.folder-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: -webkit-optimize-contrast;
  display: block;
}

/* 散落坐标（4 个文件夹，缩小 + 上移避免 Dock 遮挡） */
.pos-1 { left: 4%;  top: 8%;  width: 18%; transform: rotate(-7deg); z-index: 3; }
.pos-2 { left: 30%; top: 20%; width: 20%; transform: rotate(5deg);  z-index: 4; }
.pos-3 { left: 66%; top: 5%;  width: 18%; transform: rotate(8deg);  z-index: 2; }
.pos-4 { left: 14%; top: 58%; width: 19%; transform: rotate(-4deg); z-index: 5; }

/* 悬停 / 聚焦时浮出的黄油标签 */
.u-folder::after {
  content: attr(data-label);
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translate(-50%, 6px) rotate(-2deg);
  padding: 4px 10px;
  background: var(--butter);
  color: var(--ink);
  font-family: var(--font-hand);
  font-size: 12px;
  white-space: nowrap;
  border-radius: 4px;
  box-shadow: 0 3px 8px rgba(78, 62, 42, .18);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast), transform var(--dur-fast);
}
.u-folder:hover::after,
.u-folder:focus-visible::after {
  opacity: 1;
  transform: translate(-50%, 0) rotate(-2deg);
}

/* 纯装饰文件夹 —— 不出标签、不手型光标 */
.u-folder-decor { pointer-events: none; }
.u-folder-decor::after { display: none; }

/* 可点击的贴纸 —— 手型光标 + hover 微放大 */
.u-sticker-link { cursor: pointer; transition: transform var(--dur-fast); }
.u-sticker-link:hover img { transform: scale(1.08) rotate(-1deg); filter: drop-shadow(0 4px 8px rgba(0,0,0,.18)); }

/* —— emoji / 装饰贴纸（Vision 抠图 PNG） —— */
.u-sticker {
  position: absolute;
  z-index: 6;
  pointer-events: none;
  transform: rotate(var(--r, 0deg));
  filter: drop-shadow(0 8px 10px rgba(50, 40, 25, .22));
  user-select: none;
}
.u-sticker img {
  width: 100%; height: auto; object-fit: contain; display: block;
  image-rendering: -webkit-optimize-contrast;
}

/* =========== 响应式 =========== */
@media (max-width: 900px) {
  .universe-page { overflow: visible; }
  .u-stage {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-6) var(--sp-4);
    height: auto;
    padding: var(--sp-6) 0;
  }
  .u-folder {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    transform: none;
    filter: drop-shadow(0 10px 14px rgba(44, 56, 30, .18));
  }
  .u-folder:hover { transform: translateY(-6px); }
  .universe-note { top: 2%; }
}

@media (max-width: 600px) {
  .universe-page { padding: var(--sp-4) var(--sp-3) 96px; }
  .u-sticker { display: none; }
  .u-stage {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-5) var(--sp-3);
    padding: var(--sp-5) 0;
  }
  .universe-note {
    position: static;
    display: inline-block;
    margin: var(--sp-4) 0 0 var(--sp-2);
    transform: rotate(-3deg);
  }
}