/* ============================================
   Notes & Essays Page - Minimal B&W
   ============================================ */

/* ---- Essays Hero ---- */
.essays-hero {
  padding: 132px 40px 44px;
  position: relative;
  z-index: 1;
}
.essays-hero .container {
  position: relative;
  z-index: 2;                /* 文字在粒子之上 */
  max-width: 1200px;
  margin: 0 auto;
}

/* 径向遮罩 — 覆盖整个 hero 区域 */
.essays-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #f5f5f5;
  margin-bottom: 16px;
}
.essays-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---- Section Divider Header ---- */
.essays-section {
  position: relative;
  z-index: 1;
  padding: 28px 40px 100px;
}
.essays-section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.essays-section-icon {
  font-size: 1rem;
  line-height: 1;
  opacity: 0.6;
}
.essays-section-header h2 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  margin: 0;
}
.essays-section-desc {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-left: auto;
}

/* ---- Reading Notes List ---- */
.notes-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 760px;
  margin: 0 auto;
}

/* ---- Note Card (Book) ---- */
.note-card {
  --note-collapsed-height: 9.25rem;
  display: block;
  position: relative;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 96px;
}
.note-card:last-child { border-bottom: none; }

.note-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.note-book-name {
  font-family: var(--font-serif-cn);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #fff;
}

.note-excerpt {
  position: relative;
  max-height: var(--note-collapsed-height);
  margin-bottom: 14px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to bottom, #000 70%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 70%, transparent 100%);
  transition: max-height var(--transition);
}
.note-excerpt:last-child { margin-bottom: 0; }

.note-card-link .note-excerpt {
  --note-collapsed-height: 8.25rem;
}

.note-card.is-expanded .note-excerpt {
  max-height: var(--note-expanded-height, 80rem);
  -webkit-mask-image: none;
  mask-image: none;
}

.note-card--complete .note-excerpt {
  max-height: none;
  -webkit-mask-image: none;
  mask-image: none;
}

.note-excerpt > p:first-child,
.note-excerpt strong {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.note-quote {
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.74);
  position: relative;
  padding-left: 16px;
  border-left: 1px solid rgba(255,255,255,0.12);
  margin-top: 8px;
  margin-bottom: 4px;
}
.note-quote strong {
  color: rgba(255,255,255,0.85);
}

/* Note card placeholder */
.note-card-placeholder {
  border-bottom: none;
  cursor: default;
  padding: 48px 0;
  display: flex;
  justify-content: center;
}
.note-card-placeholder .essay-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}

/* Note card link (clickable) */
.note-card-link {
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition);
}
.note-card-link:hover {
  transform: translateY(-2px);
}
.note-card-link:hover .note-book-name {
  color: var(--accent);
}

.note-card-action,
.note-expand-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.note-card-action {
  transition: color var(--transition), transform var(--transition);
}

.note-card-link:hover .note-card-action {
  color: var(--text-primary);
  transform: translateX(3px);
}

.note-expand-button {
  padding: 4px 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: color var(--transition);
}

.note-expand-button[hidden] {
  display: none;
}

.note-expand-button:hover,
.note-expand-button:focus-visible {
  color: var(--text-primary);
}

.note-expand-button [aria-hidden="true"] {
  display: inline-block;
  transition: transform var(--transition);
}

.note-card.is-expanded .note-expand-button [aria-hidden="true"] {
  transform: rotate(180deg);
}

/* ---- Essays List ---- */
.essays-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 800px;
  margin: 0 auto;
}

/* ---- Essay Card ---- */
.essay-card {
  display: flex;
  align-items: baseline;
  gap: 28px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: var(--text-primary);
  transition: transform var(--transition), border-color var(--transition);
  position: relative;
}

.essay-card:hover {
  transform: translateX(6px);
}

.essay-card::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%) scaleX(0);
  width: 12px;
  height: 1px;
  background: var(--text-primary);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.essay-card:hover::before {
  transform: translateY(-50%) scaleX(1);
  transform-origin: left;
}

.essay-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  width: 90px;        /* fixed width — never changes on hover */
  flex-shrink: 0;
  transition: color var(--transition);
}
.essay-card:hover .essay-date { color: var(--text-secondary); }

.essay-card-body {
  flex: 1;
  min-width: 0;
}

.essay-card-title {
  font-family: var(--font-serif-cn);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
  transition: color var(--transition);
}
.essay-card:hover .essay-card-title { color: #fff; }

.essay-card-excerpt {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.essay-card-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.essay-card:hover .essay-card-tag {
  border-color: rgba(var(--ember-rgb), 0.46);
  color: var(--ember);
}

/* Note card tag chip — mirrors .essay-card-tag (was previously unstyled) */
.note-card-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

/* Group the tags on a note card (excerpt marker + topic tag) */
.note-card-tags {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* "摘录" marker for standalone excerpt cards (hasDetail:false) — distinguishes
   non-linked quote cards from the clickable full notes. Slightly tinted so it
   reads as a kind/分类 badge rather than a topic tag. */
.note-card-tag--excerpt {
  color: rgba(255, 255, 255, 0.45);
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.04);
  text-transform: none;
}

/* Placeholder */
.essay-card-placeholder {
  border-bottom: none;
  cursor: default;
  padding: 48px 0;
  justify-content: center;
}
.essay-card-placeholder::before { display: none; }
.essay-card-placeholder:hover { padding-left: 0; }

.essay-empty {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.essay-empty span {
  font-size: 1.6rem;
  font-weight: 200;
  line-height: 1;
}
.essay-empty small {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .essays-hero { padding: 104px 24px 32px; }
  .essays-section { padding: 20px 24px 72px; }
  .essays-section-header {
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 28px;
  }
  .essays-section-desc { margin-left: 0; width: 100%; }

  .essay-card {
    flex-direction: column;
    gap: 8px;
    padding: 24px 0;
  }
  /* 卡片移动入场时让小号元数据保持不透明，避免标签在淡入中短暂低于
     WCAG AA（网页内容无障碍指南的常规文字对比度标准）。 */
  .js .essay-card.animate-on-scroll { opacity: 1; }
  .essay-date { min-width: auto; font-size: 0.68rem; }
  .essay-card:hover { padding-left: 0; }
  .essay-card::before { display: none; }
  .essay-card-tag { align-self: flex-start; }

  .note-card-header { flex-direction: column; align-items: flex-start; gap: 4px; margin-bottom: 16px; }
  .note-excerpt { margin-bottom: 16px; }
  .note-quote { padding-left: 12px; font-size: 0.88rem; }
  .notes-list { gap: 26px; }
  .note-card { padding-bottom: 26px; }
  .note-expand-button { min-height: 44px; }
}

@media (max-width: 350px) {
  .essays-title {
    font-size: clamp(2rem, 10vw, 2.25rem);
    letter-spacing: -0.04em;
    white-space: nowrap;
  }
}

/* ============================================
   Essay Article Page (Single Essay)
   ============================================ */

/* ---- Essay Hero Header ---- */
.essay-hero {
  position: relative;
  z-index: 1;
  padding: 124px 40px 44px;
}
.essay-hero .container {
  max-width: 780px;
  margin: 0 auto;
}

.essay-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--transition);
  margin-bottom: 28px;
}
.essay-back:hover {
  color: var(--text-primary);
}

.essay-hero-title {
  font-family: var(--font-serif-cn);
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: #f5f5f5;
  margin-bottom: 20px;
  word-break: break-word;
}

.essay-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}
.essay-tag {
  border: 1px solid var(--border);
  padding: 4px 10px;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.essay-tag:hover {
  color: var(--ember);
  border-color: rgba(var(--ember-rgb), 0.48);
  background: var(--ember-soft);
}

/* ---- Essay Body Content ---- */
.essay-content {
  position: relative;
  z-index: 1;
  padding: 52px 40px 96px;
}
.essay-content .container {
  max-width: 720px;
  margin: 0 auto;
}

.essay-body {
  font-family: var(--font-serif-cn);
  line-height: 1.85;
  color: rgba(255,255,255,0.84);
  font-size: 1rem;
  letter-spacing: 0.01em;
}
.essay-body p {
  margin-bottom: 22px;
}
.essay-body h2 {
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-top: 48px;
  margin-bottom: 18px;
}
.essay-body h2:first-child {
  margin-top: 0;
}

.essay-lead {
  font-size: 1.15rem;
  line-height: 1.72;
  color: rgba(255,255,255,0.9);
  font-weight: 400;
  margin-bottom: 36px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

/* ---- Essay images (e.g. quote screenshots) ---- */
.essay-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 8px 0 48px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
  opacity: 0.95;
  transition: opacity var(--transition), transform var(--transition);
}
.essay-image:hover {
  opacity: 1;
  transform: translateY(-2px);
}

/* ---- Essay Page Mobile ---- */
@media (max-width: 768px) {
  .essay-hero {
    padding: 110px 20px 40px;
  }
  .essay-back {
    margin-bottom: 20px;
    font-size: 0.78rem;
  }
  .essay-hero-title {
    font-size: clamp(1.8rem, 7vw, 2.6rem);
    margin-bottom: 16px;
  }
  .essay-meta {
    gap: 10px;
    font-size: 0.7rem;
  }

  .essay-body {
    font-size: 0.96rem;
    line-height: 1.8;
  }
  .essay-lead {
    font-size: 1.05rem;
    margin-bottom: 28px;
    padding-bottom: 24px;
  }
  .essay-body h2 {
    font-size: 1.25rem;
    margin-top: 36px;
    margin-bottom: 14px;
  }
}

/* ---- Meta / translation line (bilingual) ---- */
/* Moved here from the deleted essay-detail.css so essay pages keep the
   muted translation row even though essay-detail.css is gone. */
.meta-line {
  opacity: 0.58;
  font-size: 0.9em;
  letter-spacing: 0.02em;
  margin-top: -8px !important;
}

/* ---- Lyrics stanza separation (bilingual song essays) ---- */
/* Groups a verse so the bilingual couplets inside stay tight, while verses
   get a clear breather between them. */
.essay-stanza {
  margin-top: 30px;
}
.essay-stanza:first-child {
  margin-top: 0;
}

/* === 从各文章/笔记详情页提升而来的共享样式 === */

.note-back-fixed {
  position: fixed;
  
      bottom: 32px;
  
      left: 40px;
  
      z-index: 9999;
  
      display: inline-flex;

      min-height: 44px;
  
      align-items: center;
  
      gap: 8px;
  
      font-family: var(--font-mono);
  
      font-size: 0.73rem;
  
      color: var(--text-muted);
  
      text-decoration: none;
  
      letter-spacing: 0.06em;
  
      padding: 8px 4px;
  
      transition: color var(--transition-fast), transform var(--transition-fast);
}

/* Title area */
    .note-title-area {
  margin-bottom: 56px;
   padding-bottom: 44px;
   border-bottom: 1px solid var(--border);
}

.note-title {
  font-family: var(--font-serif-cn);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
   font-weight: 700;
   letter-spacing: -0.02em;
   line-height: 1.2;
   margin-bottom: 14px;
}

.note-meta-row {
  display: flex;
   align-items: center;
   gap: 12px;
   flex-wrap: wrap;
}

.note-author {
  font-family: var(--font-mono);
   font-size: 0.82rem;
   color: var(--text-muted);
   letter-spacing: 0.03em;
}

.note-sep {
  color: var(--border);
   font-size: 0.5rem;
}

.note-tag {
  font-family: var(--font-mono);
   font-size: 0.65rem;
   color: var(--text-muted);
   border: 1px solid var(--border);
   padding: 3px 11px;
   letter-spacing: 0.06em;
   text-transform: uppercase;
   border-radius: 3px;
}

/* Content */
    .note-body {
  font-size: 0.95rem;
   line-height: 1.85;
   color: var(--text-secondary);
}

.note-body section {
  margin-bottom: 52px;
}

.note-body section:last-child {
  margin-bottom: 0;
}

.note-body h2 {
  font-size: 0.88rem;
   font-weight: 600;
   color: var(--text-primary);
   margin: 0 0 20px 0;
   padding-bottom: 10px;
   border-bottom: 1px solid var(--border);
   letter-spacing: 0.02em;
   font-family: var(--font-mono);
   text-transform: uppercase;
}

/* Highlight blocks */
    .highlight {
  margin-bottom: 20px;
  
      padding: 16px 18px 14px;
  
      background: rgba(255,255,255,0.018);
  
      border-left: 2px solid var(--accent);
  
      transition: background var(--transition-fast);
}

.highlight:hover {
  background: rgba(255,255,255,0.028);
}

.highlight-num {
  font-family: var(--font-mono);
  
      font-size: 0.66rem;
  
      color: var(--accent);
  
      margin-bottom: 6px;
  
      opacity: 0.85;
  
      letter-spacing: 0.03em;
}

.highlight-text {
  color: rgba(255,255,255,0.86);
   font-size: 0.93rem;
   line-height: 1.72;
}

.highlight-en {
  color: var(--text-muted);
   font-size: 0.77rem;
   line-height: 1.62;
   margin-top: 7px;
   font-style: italic;
}

.note-page {
  max-width: 780px;
  margin: 0 auto;
  padding: 104px 24px 80px;
}

.note-title-area {
  margin-bottom: 44px;
   padding-bottom: 34px;
   border-bottom: 1px solid var(--border);
}

.note-body {
  font-family: var(--font-serif-cn);
  font-size: 0.95rem;
   line-height: 1.85;
   color: rgba(255,255,255,0.8);
}

.dialogue {
  margin-bottom: 24px;
   padding: 16px 20px;
   background: rgba(255,255,255,0.018);
   border-radius: 6px;
   border-left: 2px solid var(--accent);
   transition: background var(--transition-fast);
}

.dialogue:hover {
  background: rgba(255,255,255,0.028);
}

.dialogue-speaker {
  font-family: var(--font-mono);
   font-size: 0.7rem;
   color: var(--accent);
   margin-bottom: 6px;
   letter-spacing: 0.04em;
}

.dialogue-speaker.lenny {
  color: #60a5fa;
}

.dialogue-text p {
  color: rgba(255,255,255,0.86);
   font-size: 0.93rem;
   line-height: 1.75;
   margin-bottom: 8px;
}

.dialogue-text p:last-child {
  margin-bottom: 0;
}

.note-body ol, .note-body ul {
  padding-left: 20px;
   margin-bottom: 16px;
}

.note-body ol li, .note-body ul li {
  margin-bottom: 8px;
   font-size: 0.93rem;
   line-height: 1.7;
}

/* ============================================
   Article navigation
   ============================================ */

.note-back-fixed:hover,
.note-back-fixed:focus-visible {
  color: var(--text-primary);
  transform: translateX(-3px);
}

.article-pagination {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  margin-top: 80px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.article-pagination-link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  color: var(--text-secondary);
  transition: color var(--transition), transform var(--transition);
}

.article-pagination-link--next {
  align-items: flex-end;
  text-align: right;
}

.article-pagination-link:hover,
.article-pagination-link:focus-visible {
  color: var(--text-primary);
  transform: translateY(-2px);
}

.article-pagination-link:hover .article-pagination-direction,
.article-pagination-link:focus-visible .article-pagination-direction {
  color: var(--ember);
}

.article-pagination-direction {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-pagination-title {
  max-width: 290px;
  font-size: 0.95rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 768px) {
  .essay-content { padding: 36px 20px 72px; }
  .note-page { padding: 94px 20px 64px; }
  .note-title-area { margin-bottom: 36px; padding-bottom: 28px; }
  .note-back-fixed {
    position: static;
    margin-bottom: 22px;
    padding: 10px 0;
  }
  .article-pagination { gap: 18px; margin-top: 56px; padding-top: 24px; }
  .article-pagination-title { font-size: 0.86rem; }
}

@media (max-width: 480px) {
  .article-pagination {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .article-pagination-spacer {
    display: none;
  }

  .article-pagination-link {
    min-height: 56px;
  }
}