/* ═══════════════════════════════════════════════════════════════════════════
   dexbook.css — 怪物圖鑑的書本樣式（紙、書脊、3D 翻頁）
   ═══════════════════════════════════════════════════════════════════════════ */
.bk {
  position: relative;
  perspective: 2600px;                      /* 翻頁的立體感全靠這個 */
  margin: 18px auto 8px;
  max-width: 1180px;
  outline: none;
}
.bk:focus-visible { box-shadow: 0 0 0 3px var(--accent-gold-light); border-radius: 20px; }
.bk-inner { display: grid; grid-template-columns: 1fr 1fr; align-items: stretch; }

/* ── 紙 ───────────────────────────────────────────────────────────────── */
.bk-page { position: relative; min-height: 600px; }
.bk-sheet {
  position: relative; height: 100%;
  display: flex; flex-direction: column; gap: 14px;
  padding: 26px 28px 40px;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(255, 250, 240, .9) 0%, transparent 60%),
    linear-gradient(180deg, #fffdf7 0%, #fdf7ea 58%, #f9f0de 100%);
  border: 1px solid rgba(184, 154, 118, .38);
}
/* 書脊：左頁右緣、右頁左緣各壓一道陰影，中間就「凹」下去了 */
.bk-page.left .bk-sheet {
  border-radius: 16px 4px 4px 16px; border-right: none;
  box-shadow: inset -22px 0 26px -20px rgba(92, 58, 20, .45), var(--e2);
}
.bk-page.right .bk-sheet {
  border-radius: 4px 16px 16px 4px; border-left: none;
  box-shadow: inset 22px 0 26px -20px rgba(92, 58, 20, .45), var(--e2);
}
/* 紙紋：極細橫線，像手札的內頁 */
.bk-sheet::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background-image: repeating-linear-gradient(180deg, rgba(150, 110, 60, .05) 0 1px, transparent 1px 28px);
}
.bk-foot {
  position: absolute; left: 0; right: 0; bottom: 14px;
  text-align: center; font-size: 12px; font-weight: 700; color: var(--muted-brown);
  letter-spacing: .06em;
}

/* ── 條目（一隻一頁）─────────────────────────────────────────────────── */
.bk-entry.solo { display: flex; flex-direction: column; gap: 13px; flex: 1; min-height: 0; }
.bk-head { display: grid; grid-template-columns: 124px 1fr; gap: 16px; align-items: center; }
.bk-title { min-width: 0; }
.bk-title h3 { margin: 0 0 3px; font-size: 27px; font-weight: 900; color: var(--text-title); letter-spacing: -.02em; line-height: 1.1; }
.bk-en { margin: 0; font-size: 12.5px; font-weight: 700; color: var(--muted-brown); letter-spacing: .04em; display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.bk-kind {
  background: rgba(184, 154, 118, .18); border: 1px solid rgba(184, 154, 118, .35);
  border-radius: 999px; padding: 1px 9px; color: var(--text-brown); letter-spacing: 0;
}
/* 小故事：官方怪物圖鑑原文。用襯線＋首字下沉，跟數值區分開 —— 這是「讀」的部分 */
.bk-story {
  margin: 0; padding: 13px 16px 13px 18px;
  border-left: 3px solid var(--accent-gold-light);
  background: linear-gradient(90deg, rgba(255, 244, 225, .75), rgba(255, 250, 240, .25));
  border-radius: 0 12px 12px 0;
  font-family: "Noto Serif TC", Georgia, "Songti TC", serif;
  font-size: 14px; line-height: 1.95; color: #4a3520;
}
.bk-story p { margin: 0; }
.bk-story p + p { margin-top: 8px; }
.bk-story p:first-child::first-letter { font-size: 1.9em; font-weight: 700; color: var(--accent); line-height: 1; margin-right: 1px; }
.bk-sec { }
.bk-sec h4 {
  margin: 0 0 7px; font-size: 13px; font-weight: 900; color: var(--text-brown);
  display: flex; align-items: baseline; gap: 8px;
  padding-bottom: 5px; border-bottom: 1px solid rgba(184, 154, 118, .3);
}
.bk-sec h4 small { font-weight: 700; font-size: 11px; color: var(--muted-brown); }
.bk-plate {
  position: relative; height: 124px; border-radius: 16px;
  display: grid; place-items: center;
  background:
    radial-gradient(58% 46% at 50% 84%, rgba(140, 100, 55, .18) 0%, transparent 72%),
    radial-gradient(circle at 50% 36%, #fffdf8 34%, #f3e6d2 100%);
  border: 1px solid rgba(184, 154, 118, .3);
  overflow: hidden;
}
.bk-plate img {
  max-width: 86%; max-height: 100px; image-rendering: pixelated;
  filter: drop-shadow(0 4px 6px rgba(90, 60, 25, .28));
  transition: transform .4s var(--ease);
}
.bk-entry:hover .bk-plate img { transform: translateY(-3px) scale(1.07); }
.bk-lv {
  position: absolute; left: 7px; top: 7px;
  background: linear-gradient(180deg, #ff8a3d, var(--accent));
  color: #fff; font-size: 11px; font-weight: 900; padding: 2px 8px; border-radius: 999px;
  box-shadow: 0 2px 6px rgba(200, 70, 0, .35);
}
.bk-body h3 {
  margin: 0 0 8px; font-size: 19px; font-weight: 900; color: var(--text-title);
  letter-spacing: -.01em; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap;
}
.bk-body h3 small { font-size: 11.5px; font-weight: 700; color: var(--muted-brown); letter-spacing: .04em; }
.bk-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 3px 14px; margin: 0; }
.bk-stats div { display: flex; justify-content: space-between; gap: 6px; font-size: 12.5px; padding: 3px 0; border-bottom: 1px solid rgba(184, 154, 118, .22); }
.bk-stats dt { color: var(--muted-brown); font-weight: 600; margin: 0; }
.bk-stats dd { margin: 0; font-weight: 800; color: var(--text-dark); font-variant-numeric: tabular-nums; }
.bk-where { margin: 0; font-size: 12px; display: flex; flex-wrap: wrap; gap: 5px; align-items: center; max-height: 78px; overflow-y: auto; }

.bk-where a {
  background: rgba(255, 255, 255, .8); border: 1px solid rgba(184, 154, 118, .4);
  border-radius: 7px; padding: 1px 7px; color: var(--text-dark); text-decoration: none; font-weight: 600;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}
.bk-where a:hover { background: #fff3e6; border-color: var(--accent-orange); color: var(--accent); }
.bk-more { color: var(--muted-brown); font-weight: 700; }
.bk-drops { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1px 14px; max-height: 168px; overflow-y: auto; }
.bk-drops li { display: flex; align-items: center; gap: 6px; font-size: 12px; padding: 2px 0; }
.bk-drops img { width: 17px; height: 17px; object-fit: contain; image-rendering: pixelated; flex: none; }
.bk-drops i { width: 17px; height: 17px; border-radius: 4px; background: rgba(184, 154, 118, .18); flex: none; }
.bk-drops i.meso { background: none; font-style: normal; font-size: 14px; line-height: 17px; text-align: center; }
.bk-drops span { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text); }
.bk-drops b { color: var(--accent); font-weight: 800; font-variant-numeric: tabular-nums; }
.bk-end { flex: 1; display: grid; place-content: center; text-align: center; color: var(--muted-brown); gap: 6px; }
.bk-end span { font-size: 46px; opacity: .5; }

/* ── 3D 翻頁 ──────────────────────────────────────────────────────────── */
.bk-leaf {
  position: absolute; top: 0; bottom: 0; width: 50%;
  transform-style: preserve-3d;
  transition: transform .82s cubic-bezier(.42, .02, .28, 1);
  z-index: 5; pointer-events: none;
  will-change: transform;
}
.bk-leaf.fwd { right: 0; transform-origin: left center; transform: rotateY(0deg); }
.bk-leaf.fwd.go { transform: rotateY(-178deg); }
.bk-leaf.bwd { left: 0; transform-origin: right center; transform: rotateY(0deg); }
.bk-leaf.bwd.go { transform: rotateY(178deg); }
.bk-face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.bk-face.back { transform: rotateY(180deg); }
.bk-face .bk-page { height: 100%; min-height: 0; }
/* 翻動時紙面的受光：轉到一半最暗，像真的紙被翻起來 */
.bk-face::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: inherit;
  background: linear-gradient(90deg, rgba(92, 58, 20, .26), rgba(92, 58, 20, 0) 45%);
  opacity: 0; transition: opacity .82s ease;
}
.bk-leaf.go .bk-face::after { opacity: 1; }

/* ── 翻頁鈕與頁碼 ─────────────────────────────────────────────────────── */
.bk-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid rgba(184, 154, 118, .5);
  background: rgba(255, 253, 248, .94);
  color: var(--text-title); font-size: 24px; line-height: 1; font-weight: 700;
  cursor: pointer; z-index: 8;
  box-shadow: var(--e2);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), opacity .22s ease;
}
.bk-nav.prev { left: -26px; }
.bk-nav.next { right: -26px; }
.bk-nav:hover:not(:disabled) { transform: translateY(-50%) scale(1.09); box-shadow: var(--e3); color: var(--accent); }
.bk-nav:disabled { opacity: .3; cursor: default; }
.bk-idx { text-align: center; margin-top: 12px; font-size: 13px; font-weight: 700; color: var(--muted-brown); }

/* ── 檢視切換 ─────────────────────────────────────────────────────────── */
.view-sw { display: inline-flex; gap: 2px; background: rgba(184, 154, 118, .16); border-radius: 999px; padding: 3px; margin-left: auto; }
.view-sw button {
  border: none; background: transparent; cursor: pointer;
  padding: 6px 14px; border-radius: 999px; font-weight: 800; font-size: 13px; color: var(--muted-brown);
  transition: background .2s ease, color .2s ease, box-shadow .2s ease;
}
.view-sw button.on { background: #fff; color: var(--accent); box-shadow: var(--e1); }

/* ── 手機：書攤不開 → 單頁 ────────────────────────────────────────────── */
@media (max-width: 880px) {
  .bk-inner { grid-template-columns: 1fr; }
  .bk-page.left { display: none; }                 /* 只顯示右頁，等同單頁本 */
  .bk-page.right .bk-sheet { border-radius: 16px; border-left: 1px solid rgba(184, 154, 118, .38); box-shadow: var(--e2); }
  .bk-page { min-height: 520px; }
  .bk-sheet { padding: 22px 20px 40px; }
  .bk-entry { grid-template-columns: 92px 1fr; gap: 12px; }
  .bk-plate { height: 92px; }
  .bk-drops { grid-template-columns: 1fr; }
  .bk-nav.prev { left: 2px; } .bk-nav.next { right: 2px; }
  .bk-leaf { width: 100%; }
}

/* 沒有精靈圖時的佔位（有 7 隻怪的素材沒被解包出來）—— 安靜的問號，不是破圖 */
.bk-noimg {
  display: grid; place-items: center;
  width: 56px; height: 56px; border-radius: 14px;
  background: rgba(184, 154, 118, .14);
  border: 1px dashed rgba(184, 154, 118, .45);
  color: var(--muted-brown); font-weight: 900; font-size: 20px;
}

/* 特性列：官方條目開頭的「特性：…」抽出來，跟敘述分開 */
.bk-traits {
  margin: 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  font-size: 12px;
}
.bk-traits b {
  color: var(--muted-brown); font-weight: 800; font-size: 11px;
  letter-spacing: .06em; margin-right: 2px;
}
.bk-traits span {
  background: rgba(214, 158, 46, .14); border: 1px solid rgba(214, 158, 46, .34);
  border-radius: 7px; padding: 2px 9px; color: var(--text-brown); font-weight: 700;
}

/* 🐛 翻頁鈕在平板寬度會頂出視窗：`left/right: -26px` 需要書兩側各有 26px 的外部空間，
   但 .bk 的 max-width 是 1180 —— 視窗一旦小於 1180+52+版心留白，鈕就沒地方站（1024px 實測溢出 6px）。
   空間不夠時把鈕收進書內，並加半透明底讓它在紙上也看得清楚。 */
@media (max-width: 1280px) {
  .bk-nav.prev { left: 6px; }
  .bk-nav.next { right: 6px; }
  .bk-nav {
    background: rgba(255, 253, 248, .86);
    backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  }
}