@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;1,400;1,500&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: radial-gradient(ellipse at 50% 20%, #ffffff 0%, #f8f4ec 30%, #e4ddd0 70%, #d4ccbc 100%);
  --bg-solid: #f8f5ef;
  --bg-alt: #f2ede6;
  --bg-dark: #e8e3db;
  --border: #c8c4ba;
  --text-primary: #1a1a18;
  --text-secondary: #3a3a38;
  --text-muted: #6a6a68;
  --text-faint: #9a9a98;
  --serif: "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Yu Mincho", "YuMincho", "Noto Serif TC", 'EB Garamond', Georgia, serif;
  --max-w: 1100px;
}

html { font-size: 16px; }
body { background: var(--bg); background-attachment: fixed; color: var(--text-primary); font-family: var(--serif); line-height: 1.7; -webkit-font-smoothing: antialiased; min-height: 100vh; }
body::before {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}
body > * { position: relative; }
a { color: inherit; text-decoration: none; }
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2.5rem; }

/* HEADER */
.site-header { border-bottom: 0.5px solid var(--border); padding: 2.5rem 0 2rem; }
.site-header .container { display: flex; flex-direction: column; }
.site-eyebrow { font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 0.3rem; opacity: 0.8; }
.site-name { font-size: 36px; font-weight: 400; letter-spacing: 0.03em; color: var(--text-primary); margin-bottom: 0.4rem; }
.site-name a { color: inherit; }
.site-tagline { font-size: 12px; font-style: italic; color: var(--text-faint); letter-spacing: 0.08em; margin-bottom: 1.5rem; }
.tagline-link { transition: color 0.2s; }
.tagline-link:hover { color: var(--text-primary); }

/* ==================== NAV 選單修正 ==================== */
.site-nav { 
  display: flex; 
  gap: 2rem; 
  align-items: center; 
}

.nav-item {
  position: relative;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-faint);
  cursor: pointer;
  user-select: none;
  transition: color 0.12s;
  padding: 8px 0 22px 0;     /* 增加底部空間 */
}

/* 關鍵：隱形橋樑，解決滑鼠移動時選單消失 */
.nav-item::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -15px;
  height: 40px;               /* 增加容錯高度 */
  z-index: 10;
}

.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 200;
  margin-top: 6px;            /* 適中間距 */
}

.nav-item:hover .dropdown {
  display: block;
}

/* 保留原本的下拉框美觀 */
.dropdown-inner {
  background: #f8f5ef;
  border: 0.5px solid var(--border);
  min-width: 160px;
  padding: 0.5rem 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  border-radius: 4px;         /* 可選：加一點圓角更好看 */
}

.dropdown-item {
  padding: 0.5rem 1rem;
  font-size: 13px;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  display: block;
  transition: background 0.1s;
}

.dropdown-item:hover {
  background: var(--bg-alt);
  color: var(--text-primary);
}

.dropdown-divider {
  height: 0.5px;
  background: var(--border);
  margin: 0.25rem 0;
}

/* BOOKSHELF */
.shelf-section { padding: 1.25rem 0 3rem; }
.shelf-wrap { display: flex; align-items: flex-end; justify-content: space-between; border-bottom: 2px solid #b0ada6; width: 100%; background: transparent; }
.shelf-left { display: flex; align-items: flex-end; gap: 0; }
.shelf-left:hover .book { z-index: 0; }
.shelf-left:hover .book:hover { z-index: 20; }
.shelf-right { display: flex; flex-direction: column; align-items: flex-end; justify-content: flex-end; gap: 0; }

/* 進場動畫 */
@keyframes bookFadeIn {
  from { opacity: 0; filter: blur(8px); transform: translateY(6px); }
  to   { opacity: 1; filter: blur(0);   transform: translateY(0); }
}

.book {
  position: relative; flex-shrink: 0;
  animation: bookFadeIn 0.8s ease forwards;
  opacity: 0; transform-origin: bottom center;
  will-change: filter;
}
.book:nth-child(1) { animation-delay: 0.05s; }
.book:nth-child(2) { animation-delay: 0.12s; }
.book:nth-child(3) { animation-delay: 0.19s; }
.book:nth-child(4) { animation-delay: 0.26s; }
.book:nth-child(5) { animation-delay: 0.33s; }
.book:nth-child(6) { animation-delay: 0.40s; }
.book:nth-child(7) { animation-delay: 0.47s; }
.book:nth-child(8) { animation-delay: 0.54s; }
.book:nth-child(9) { animation-delay: 0.61s; }
.book.book-ready { opacity: 1; }

/* 懸停：亮度加陰影，不放大，不閃 */
.book:hover {
  z-index: 30 !important;
  animation: none !important;
  opacity: 1 !important;
  filter: brightness(1.08) drop-shadow(0 6px 14px rgba(0,0,0,0.15));
  transition: filter 0.18s ease;
}

.book-spine {
  display: flex; flex-direction: column; justify-content: space-between; align-items: center;
  padding: 1rem 0.55rem 0.6rem; border-radius: 3px 3px 0 0; position: relative; cursor: pointer;
  box-shadow: inset 2px 0 4px rgba(255,255,255,0.15), inset -2px 0 4px rgba(0,0,0,0.08);
}
.book-spine::before {
  content: ''; position: absolute; bottom: -6px; left: 4px; right: 4px;
  height: 8px; background: rgba(0,0,0,0); border-radius: 50%; filter: blur(4px);
  transition: all 0.15s ease; pointer-events: none;
}
.book:hover .book-spine::before { background: rgba(0,0,0,0.15); bottom: -8px; }
.book-spine::after {
  content: ''; position: absolute; top: 0; right: 0; bottom: 0; width: 5px;
  background: linear-gradient(to right, transparent, rgba(0,0,0,0.12));
  border-radius: 0 3px 0 0; pointer-events: none;
}

.book-spine-title { writing-mode: vertical-lr; text-orientation: upright; font-size: 12px; letter-spacing: 0.05em; flex: 1; display: flex; align-items: center; }
.book-num { font-size: 10px; font-style: italic; letter-spacing: 0.05em; opacity: 0.55; margin-top: 0.5rem; font-family: 'EB Garamond', Georgia, serif; }

.tooltip {
  display: none; position: absolute; bottom: calc(100% + 4px); left: 50%; transform: translateX(-50%);
  background: var(--bg-solid); border: 0.5px solid var(--border); width: 180px; z-index: 50; overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.book:hover .tooltip { display: block; }
.tooltip-img { width: 100%; height: 100px; object-fit: cover; display: block; filter: saturate(0.4) brightness(0.95); }
.tooltip-body { padding: 0.75rem; }
.tooltip-title { font-size: 13px; font-weight: 500; margin-bottom: 0.2rem; }
.tooltip-desc { font-size: 11px; font-style: italic; color: var(--text-muted); line-height: 1.5; margin-bottom: 0.4rem; }
.tooltip-status { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-faint); }

.dashed-book {
  position: relative; display: flex; align-items: center; justify-content: center;
  border: 1px dashed #b0aca4; background: transparent; border-radius: 3px;
  overflow: hidden; transition: border-color 0.15s;
}
.dashed-book:hover { border-color: #8a8880; }
.dashed-label { font-size: 10px; letter-spacing: 0.06em; color: #a8a49c; font-style: italic; transition: opacity 0.15s; }
.dashed-hover {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-style: italic; color: var(--text-muted);
  opacity: 0; transition: opacity 0.15s; background: rgba(248,245,239,0.9);
  padding: 0 0.5rem; text-align: center; line-height: 1.4;
}
.dashed-book:hover .dashed-label { opacity: 0; }
.dashed-book:hover .dashed-hover { opacity: 1; }

.suosui-wrap { cursor: pointer; transition: transform 0.18s ease; display: block; line-height: 0; }
.suosui-wrap:hover { transform: translateX(-10px); }
.shelf-hint { font-size: 12px; color: var(--text-faint); font-style: italic; margin-top: 0.75rem; text-align: right; }

/* 還沒說完的故事 — 有機版型 */
.stories { padding: 2.5rem 0 3rem; border-top: 0.5px solid var(--border); margin-top: 2.5rem; }
.stories-label { font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 1.75rem; }
.stories-main { margin-bottom: 1.75rem; }
.stories-main-link { display: block; color: inherit; }
.stories-main-series { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 0.5rem; }
.stories-main-title { font-size: 26px; font-weight: 400; margin-bottom: 0.5rem; line-height: 1.2; transition: color 0.15s; }
.stories-main-link:hover .stories-main-title { color: var(--text-muted); }
.stories-main-desc { font-size: 14px; font-style: italic; color: var(--text-muted); line-height: 1.85; max-width: 480px; margin-bottom: 0.75rem; }
.stories-main-cta { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-faint); }
.stories-divider { width: 36px; height: 0.5px; background: var(--border); margin-bottom: 1.75rem; }
.stories-sides { display: flex; gap: 4rem; }
.story-side { display: block; color: inherit; }
.story-side-series { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 0.3rem; }
.story-side-title { font-size: 16px; font-weight: 400; margin-bottom: 0.2rem; transition: color 0.15s; }
.story-side:hover .story-side-title { color: var(--text-muted); }
.story-side-desc { font-size: 12px; font-style: italic; color: var(--text-muted); }
.story-side-arrow { font-size: 10px; letter-spacing: 0.1em; color: var(--text-faint); margin-top: 0.4rem; display: block; transition: color 0.15s; }
.story-side:hover .story-side-arrow { color: var(--text-muted); }

/* READING */
.reading-wrap { display: grid; grid-template-columns: 1fr 240px; max-width: var(--max-w); margin: 0 auto; min-height: calc(100vh - 160px); }
.reading-main { padding: 3rem 3rem 4rem 2.5rem; border-right: 0.5px solid var(--border); }
.chapter-meta { margin-bottom: 2.5rem; }
.chapter-series { font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 0.75rem; }
.chapter-title { font-size: 30px; font-weight: 400; line-height: 1.25; margin-bottom: 0.35rem; }
.chapter-sub { font-size: 16px; font-style: italic; color: var(--text-muted); margin-bottom: 1.5rem; }
.chapter-divider { width: 36px; height: 0.5px; background: var(--border); }
.chapter-body { font-size: 18px; line-height: 2.1; color: var(--text-secondary); max-width: 540px; }
.chapter-body p { margin-bottom: 1.6rem; }
.chapter-body p:last-child { margin-bottom: 0; }
.chapter-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 3.5rem; padding-top: 2rem; border-top: 0.5px solid var(--border); max-width: 540px; }
.chapter-nav a { font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); transition: color 0.12s; }
.chapter-nav a:hover { color: var(--text-primary); }

/* SIDEBAR */
.reading-sidebar { padding: 3rem 1.5rem; background: var(--bg-alt); }
.section-label { font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 1.25rem; }
.progress-bar { width: 100%; height: 1px; background: var(--border); margin-bottom: 0.5rem; }
.progress-fill { height: 100%; background: var(--text-muted); }
.progress-label { font-size: 11px; color: var(--text-faint); letter-spacing: 0.1em; margin-bottom: 1.75rem; }
.toc-list { list-style: none; }
.toc-item { padding: 0.6rem 0; border-bottom: 0.5px solid var(--border); }
.toc-item:last-child { border-bottom: none; }
.toc-num { font-size: 10px; color: var(--text-faint); letter-spacing: 0.1em; margin-bottom: 2px; }
.toc-name { font-size: 13px; color: var(--text-secondary); line-height: 1.3; }
.toc-name.active { color: var(--text-primary); font-style: italic; }
.toc-name a { display: block; }
.toc-item:hover .toc-name { color: var(--text-primary); }

/* ABOUT */
.about-wrap { max-width: var(--max-w); margin: 0 auto; padding: 3rem 2.5rem; }
.about-body { max-width: 520px; font-size: 18px; line-height: 2.1; color: var(--text-secondary); }
.about-body p { margin-bottom: 1.5rem; }
.about-quote { font-size: 14px; font-style: italic; color: var(--text-muted); border-left: 2px solid var(--border); padding-left: 1rem; margin-top: 2rem; line-height: 1.8; }


/* HOURGLASS */
.hourglass-area {
  flex: 1;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 0 2rem 0 0;
  margin-bottom: -2px;
}

/* FOOTER */
.site-footer {
  border-top: 0.5px solid var(--border);
  padding: 0.75rem 0;
  margin-top: 1rem;
  text-align: center;
}
.footer-text {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-faint);
  font-style: italic;
  text-align: center;
}

/* 移除 stories 分隔線，縮短距離 */
.stories {
  border-top: none !important;
  margin-top: 1.5rem !important;
  padding-top: 0 !important;
}

/* MOBILE */
@media (max-width: 700px) {
  .container { padding: 0 1.25rem; }
  .site-header { padding: 1.75rem 0 1.5rem; }
  .site-name { font-size: 22px; }
  .site-tagline { font-size: 12px; margin-bottom: 1rem; }

  /* 書架橫向捲動 */
  .shelf-section { padding: 1.75rem 0 2rem; }
  .shelf-wrap { flex-direction: column; align-items: flex-start; border-bottom: none; gap: 0; }
  .shelf-left {
    overflow-x: auto; overflow-y: visible;
    -webkit-overflow-scrolling: touch;
    border-bottom: 2px solid #b0ada6;
    width: 100%; padding-bottom: 0;
    scrollbar-width: none;
  }
  .shelf-left::-webkit-scrollbar { display: none; }
  .shelf-right {
    border-bottom: 2px solid #b0ada6;
    width: 100%; margin-top: 0.75rem;
    flex-direction: row; align-items: flex-end; justify-content: flex-start; gap: 8px;
    overflow-x: auto; padding-bottom: 0;
  }
  .suosui-wrap:hover { transform: translateX(10px); }

  /* 還沒說完的故事手機版 */
  .stories { padding: 1.75rem 0 2rem; margin-top: 1.75rem; }
  .stories-main-title { font-size: 20px; }
  .stories-sides { flex-direction: column; gap: 1.25rem; }

  /* 漢堡選單 */
  .hourglass-area { display: none; }
  .site-nav { display: none; }
  .hamburger {
    display: flex; flex-direction: column; gap: 5px;
    cursor: pointer; padding: 4px 0; width: 24px;
  }
  .hamburger span { width: 22px; height: 1px; background: var(--text-muted); display: block; transition: all 0.2s; }

  /* 手機選單覆蓋層 */
  .mobile-menu {
    display: none; position: fixed; inset: 0;
    background: var(--bg-solid); z-index: 200;
    padding: 2rem 1.5rem; flex-direction: column;
    overflow-y: auto;
  }
  .mobile-menu.open { display: flex; }
  .mobile-menu-close {
    font-size: 11px; letter-spacing: 0.15em; text-transform: uppercase;
    color: var(--text-faint); cursor: pointer; margin-bottom: 2.5rem;
    align-self: flex-end;
  }
  .mobile-menu a {
    font-size: 20px; color: var(--text-primary);
    padding: 0.85rem 0; border-bottom: 0.5px solid var(--border); display: block;
  }
  .mobile-menu a:last-child { border-bottom: none; }

  .reading-wrap { grid-template-columns: 1fr; }
  .reading-main { padding: 2rem 1.25rem; border-right: none; border-bottom: 0.5px solid var(--border); }
  .chapter-body { font-size: 17px; }
  .chapter-nav { max-width: 100%; }
  .reading-sidebar { padding: 1.75rem 1.25rem; }
  .about-wrap { padding: 2rem 1.25rem; }
}
@media (min-width: 701px) {
  .hamburger { display: none; }
  .mobile-menu { display: none !important; }
}