/* ============================================================
   NEBULA ARCHIVE · detail.css
   详情页：书本展示区 / 元数据 / 书评笔记 / 摘录 / 响应式
   ============================================================ */

.detail-main {
  padding-top: calc(var(--nav-h) + 2.2rem);
}

/* ---------- 返回书架 ---------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.6rem;
  padding: 0.45rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.back-link:hover {
  color: var(--cyan);
  border-color: var(--cyan);
  transform: translateX(-4px);
}
.back-link::before { content: "←"; color: var(--accent, var(--cyan)); }

/* ---------- 头部双栏：3D 预览 + 元数据 ---------- */
.detail-hero {
  display: grid;
  grid-template-columns: minmax(300px, 440px) 1fr;
  gap: 2.6rem;
  align-items: start;
}

/* 3D 预览容器（detail.js 挂载 canvas / 降级封面） */
#book-preview {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background:
    radial-gradient(60% 46% at 50% 88%, color-mix(in srgb, var(--accent, var(--cyan)) 16%, transparent), transparent 72%),
    radial-gradient(80% 60% at 50% 8%, rgba(79, 216, 255, 0.06), transparent 70%),
    linear-gradient(170deg, var(--surface), var(--bg2));
  overflow: hidden;
  cursor: grab;
  touch-action: none;
}
#book-preview:active { cursor: grabbing; }
#book-preview canvas {
  width: 100% !important;
  height: 100% !important;
}
#book-preview .preview-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.6rem;
}
#book-preview .preview-fallback canvas,
#book-preview .preview-fallback img {
  max-height: 100%;
  width: auto;
  border-radius: 6px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 34px color-mix(in srgb, var(--accent, var(--cyan)) 24%, transparent);
}
.preview-hint {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  z-index: 2;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(5, 7, 15, 0.66);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  pointer-events: none;
  white-space: nowrap;
}
.preview-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--accent, var(--cyan)) 55%, transparent);
  background: rgba(5, 7, 15, 0.6);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.26em;
  color: var(--accent, var(--cyan));
  pointer-events: none;
}

/* ---------- 元数据区 ---------- */
.book-meta { min-width: 0; }
.book-meta .kicker { color: var(--accent, var(--cyan)); }
.book-title {
  margin-top: 0.5rem;
  font-size: clamp(2rem, 4.4vw, 3.2rem);
  font-weight: 900;
  color: var(--star);
  text-shadow: 0 0 34px color-mix(in srgb, var(--accent, var(--cyan)) 30%, transparent);
}
.book-author {
  margin-top: 0.4rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-dim);
}
.book-author::before { content: "✦ "; color: var(--accent, var(--cyan)); }

.meta-badges {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.32rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}
.badge-status { border-color: color-mix(in srgb, var(--success) 60%, transparent); color: var(--success); }
.badge-status[data-status="reading"] { border-color: color-mix(in srgb, var(--warning) 60%, transparent); color: var(--warning); }
.badge-status[data-status="wishlist"] { border-color: color-mix(in srgb, var(--info) 60%, transparent); color: var(--info); }
.badge-rating { color: var(--amber); border-color: rgba(255, 180, 84, 0.5); letter-spacing: 0.18em; }
.badge-date { color: var(--text-faint); }

.book-summary {
  margin-top: 1.4rem;
  padding: 1rem 1.3rem;
  border-left: 3px solid var(--accent, var(--cyan));
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent, var(--cyan)) 9%, transparent), transparent 75%);
  color: var(--text);
  font-size: 1.02rem;
}

.tag-row { margin-top: 1.2rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  padding: 0.22rem 0.8rem;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: rgba(16, 26, 54, 0.55);
  color: var(--text-dim);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.tag:hover { border-color: var(--accent, var(--cyan)); color: var(--star); }
.tag::before { content: "#"; color: var(--accent, var(--cyan)); margin-right: 2px; }

.meta-actions { margin-top: 1.6rem; display: flex; flex-wrap: wrap; gap: 0.8rem; }
.meta-facts {
  margin-top: 1.6rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.8rem;
}
.fact {
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(10, 15, 30, 0.5);
}
.fact dt {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.26em;
  color: var(--text-faint);
  text-transform: uppercase;
}
.fact dd { margin-top: 0.25rem; font-size: 0.92rem; color: var(--star); }
.fact dd a { color: var(--cyan); }
.fact dd a:hover { text-decoration: underline; }

/* ---------- 内容分区（书评 / 摘录） ---------- */
.detail-section { margin-top: 3.4rem; }
.detail-section .section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.4rem;
}
.detail-section .section-head h2 { color: var(--star); }
.detail-section .section-head .kicker { color: var(--accent, var(--cyan)); }
.detail-section .section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent, var(--cyan)) 55%, transparent), transparent);
}

/* 书评笔记 */
.review-card {
  position: relative;
  padding: 1.8rem 2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(500px 200px at 100% 0%, color-mix(in srgb, var(--accent, var(--cyan)) 7%, transparent), transparent 70%),
    linear-gradient(160deg, var(--surface), rgba(10, 15, 30, 0.6));
}
.review-card::before {
  content: "❝";
  position: absolute;
  top: -14px;
  left: 22px;
  font-size: 2.4rem;
  font-family: var(--font-serif);
  color: var(--accent, var(--cyan));
  text-shadow: 0 0 18px color-mix(in srgb, var(--accent, var(--cyan)) 60%, transparent);
}
.review-body p { color: var(--text); margin-bottom: 1em; }
.review-body p:last-child { margin-bottom: 0; }
.review-sign {
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--text-faint);
}
.review-sign b { color: var(--accent, var(--cyan)); font-weight: 400; }

/* 摘录 */
.quote-list { display: grid; gap: 1.1rem; }
.quote-card {
  position: relative;
  padding: 1.4rem 1.6rem 1.2rem 3.2rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent, var(--cyan));
  border-radius: var(--radius-sm);
  background: linear-gradient(120deg, rgba(16, 26, 54, 0.5), rgba(10, 15, 30, 0.35));
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.quote-card:hover {
  transform: translateX(6px);
  box-shadow: -6px 0 24px color-mix(in srgb, var(--accent, var(--cyan)) 16%, transparent);
}
.quote-card::before {
  content: "“";
  position: absolute;
  left: 14px;
  top: 8px;
  font-family: var(--font-serif);
  font-size: 2.2rem;
  line-height: 1;
  color: color-mix(in srgb, var(--accent, var(--cyan)) 75%, var(--star));
}
.quote-card blockquote {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--star);
}
.quote-card figcaption {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--text-faint);
}
.quote-card figcaption::before { content: "—— "; color: var(--accent, var(--cyan)); }

/* ---------- 错误态（data.js renderDataError） ---------- */
.data-error {
  margin: 2rem auto;
  max-width: 560px;
  padding: 2rem;
  text-align: center;
  border: 1px solid rgba(255, 84, 112, 0.5);
  border-radius: var(--radius);
  background: rgba(255, 84, 112, 0.06);
}
.data-error-icon { font-size: 2rem; color: var(--danger); }
.data-error-title { margin-top: 0.5rem; font-family: var(--font-serif); font-size: 1.2rem; color: var(--star); }
.data-error-msg { margin: 0.6rem 0 1.2rem; color: var(--text-dim); font-size: 0.88rem; word-break: break-all; }

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .detail-hero { grid-template-columns: 1fr; gap: 1.8rem; }
  #book-preview { max-width: 360px; margin-inline: auto; width: 100%; }
  .review-card { padding: 1.4rem 1.2rem; }
  .quote-card { padding-left: 2.6rem; }
}
@media (max-width: 390px) {
  .detail-main { padding-top: calc(var(--nav-h) + 1.2rem); }
  .book-title { font-size: 1.9rem; }
  .meta-badges { gap: 0.4rem; }
  .badge { font-size: 0.68rem; padding: 0.28rem 0.7rem; }
  .quote-card blockquote { font-size: 0.98rem; }
}