/* Chapter 02 — looking-up rain of 4445 poems */

.reading-scene > .chapter[data-chapter-id="02-universe"] {
  background: transparent;
}

.chapter[data-chapter-id="02-universe"] {
  padding: 0;
  min-height: 0;
  position: relative;
  background: transparent;
}

.chapter[data-chapter-id="02-universe"] .chapter__inner {
  width: 100%;
  max-width: none;
}

.poem-sky {
  position: relative;
  margin-top: -5vh;
  padding-top: 5vh;
  height: 168vh;
  height: 168dvh;
  background: transparent;
}

.poem-sky__stage {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  cursor: default;
  background: var(--color-bg);
}

.poem-sky__canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
}

/* 雾面诗笺 — 方案 D：中心亮雾，外缘渐隐，无描边 */
.poem-sky__mist {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 4;
  min-width: 10.5rem;
  max-width: 17rem;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: translate3d(0, 0, 0);
  transition: opacity 0.32s ease, visibility 0.32s ease;
  font-family: "Noto Serif SC", var(--font-serif);
  font-weight: 300;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}

.poem-sky__mist.is-open {
  visibility: visible;
}

.poem-sky__mist-glow {
  position: absolute;
  inset: -6px -8px;
  pointer-events: none;
  border-radius: 2px;
  background: rgba(248, 250, 252, 0.28);
  filter: blur(6px);
  opacity: 1;
}

.poem-sky__mist-core {
  position: relative;
  z-index: 1;
  padding: 1.18rem 1.32rem 1.22rem;
  border-radius: var(--slip-radius);
  background: var(--slip-bg);
  backdrop-filter: blur(var(--slip-blur)) saturate(118%);
  -webkit-backdrop-filter: blur(var(--slip-blur)) saturate(118%);
  box-shadow: var(--slip-shadow);
  text-align: center;
}

.poem-sky__mist.is-expanded {
  max-width: min(22rem, calc(100% - 2.4rem));
  pointer-events: auto;
}

.poem-sky__mist.is-expanded .poem-sky__mist-glow {
  inset: -8px -10px;
}

.poem-sky__mist.is-expanded .poem-sky__mist-core {
  max-height: min(66vh, 34rem);
  overflow: auto;
  padding: 1.28rem 1.48rem 1.38rem;
}

.poem-sky__title {
  margin: 0;
  font-size: clamp(0.9rem, 1.45vw, 1.02rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--slip-title);
}

.poem-sky__author,
.poem-sky__genre {
  margin: 0.38rem 0 0;
  font-size: clamp(0.7rem, 1.15vw, 0.78rem);
  letter-spacing: 0.16em;
  line-height: 1.55;
  color: var(--slip-body);
}

.poem-sky__genre {
  margin-top: 0.14rem;
  letter-spacing: 0.24em;
  text-indent: 0.24em;
}

.poem-sky__body {
  margin: 0.75rem 0 0;
  padding-top: 0;
  border-top: none;
  font-size: clamp(0.76rem, 1.2vw, 0.86rem);
  font-weight: 300;
  letter-spacing: 0.07em;
  line-height: 2;
  white-space: pre-wrap;
  color: rgba(36, 36, 36, 0.92);
}

.poem-sky__body strong {
  font-weight: 700;
  color: rgba(28, 28, 28, 0.96);
}

.poem-sky__mist.is-expanded .poem-sky__body {
  margin-top: 0.85rem;
  padding-top: 0;
}

.poem-sky__mist.is-expanded .poem-sky__mist-core::-webkit-scrollbar {
  width: 4px;
}

.poem-sky__mist.is-expanded .poem-sky__mist-core::-webkit-scrollbar-thumb {
  background: rgba(140, 144, 150, 0.22);
  border-radius: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .poem-sky__mist {
    transition: none;
  }
}