/* ============================================================
   书单（Book List）模块样式 —— 扁平 / 主题同色（暖金 #b8860b）
   ============================================================ */
:root{
  --bl-accent:#b8860b;
  --bl-accent-light:#d4a745;
  --bl-accent-dim:#8b6914;
  --bl-ink:#2b2b2b;
  --bl-ink-muted:#8a8a8a;
  --bl-border:#eee;
  --bl-border-light:#f2f2f2;
  --bl-card:#ffffff;
  --bl-ph-bg:#f3efe6;
  --bl-radius:12px;
  --bl-radius-sm:8px;
}

/* 区块标题（竖向金色标记条） */
.bl-section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  margin:6px 0 18px;
}
.bl-section-head__left{display:flex;align-items:center;gap:10px;}
.bl-section-head__bar{
  width:4px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,var(--bl-accent) 0%,var(--bl-accent-dim) 100%);
}
.bl-section-head__title{font-size:20px;font-weight:700;color:var(--bl-ink);line-height:1;}
.bl-section-head__sub{font-size:13px;color:var(--bl-ink-muted);margin-left:2px;}
.bl-section-head__action{
  font-size:13px;color:var(--bl-accent);text-decoration:none;
}
.bl-section-head__action:hover{color:var(--bl-accent-dim);}

/* 书单网格 */
.bl-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:20px;
}

/* 书单卡片（整卡可点击，进入个人书单首页） */
.bl-card{
  display:block;
  background:var(--bl-card);
  border:1px solid var(--bl-border);
  border-radius:var(--bl-radius);
  padding:16px;
  text-decoration:none;
  color:inherit;
  transition:border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.bl-card:hover{
  border-color:var(--bl-accent-light);
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(184,134,11,.10);
}

/* 封面行：最多 3 本，多余以 +N 覆盖第 3 本 */
.bl-covers{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:8px;
  margin-bottom:12px;
}
.bl-cover{
  position:relative;
  aspect-ratio:3/4;
  border-radius:var(--bl-radius-sm);
  overflow:hidden;
  background:var(--bl-ph-bg);
  display:flex;align-items:center;justify-content:center;
}
/* 默认无封面占位（显示书名） */
.bl-cover__ph{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  padding:10px;
  font-size:13px;line-height:1.5;color:#b9a87f;
  text-align:center;
  overflow:hidden;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;
}
.bl-cover img{
  position:absolute;inset:0;
  width:100%;height:100%;object-fit:cover;
  border:0;
}
/* 多余封面 +N 覆盖层（点击进入个人书单首页） */
.bl-cover__plus{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(43,32,10,.55);
  color:#fff;font-size:20px;font-weight:700;
  letter-spacing:.5px;
}

/* 文案 */
.bl-card__title{
  font-size:16px;font-weight:700;color:var(--bl-ink);
  margin:0 0 4px;
  overflow:hidden;white-space:nowrap;text-overflow:ellipsis;
}
.bl-card__owner{font-size:13px;color:var(--bl-accent);margin-bottom:6px;}
.bl-card__desc{
  font-size:13px;color:var(--bl-ink-muted);line-height:1.6;
  margin:0 0 10px;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.bl-card__meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:12px;color:#aaa;
  border-top:1px solid var(--bl-border-light);
  padding-top:10px;margin-top:2px;
}
.bl-card__meta b{color:var(--bl-ink);font-weight:600;}

/* 个人书单首页 */
.bl-detail-head{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--bl-card);border:1px solid var(--bl-border);
  border-radius:var(--bl-radius);padding:20px;margin-bottom:20px;
}
.bl-detail-head__avatar{
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
  background:linear-gradient(135deg,var(--bl-accent),#d8a23a);
  color:#fff;font-size:22px;font-weight:700;line-height:1;
}
.bl-detail-head__main{flex:1;min-width:0;}
.bl-detail-head__title{font-size:22px;font-weight:700;color:var(--bl-ink);margin:0 0 6px;}
.bl-detail-head__owner{font-size:14px;color:var(--bl-accent);margin-bottom:8px;}
.bl-detail-head__desc{font-size:14px;color:var(--bl-ink-muted);line-height:1.7;margin:0 0 10px;}
.bl-detail-head__meta{display:flex;gap:18px;font-size:13px;color:#aaa;flex-wrap:wrap;}
.bl-detail-head__meta b{color:var(--bl-ink);}

/* 书单内书籍网格 */
.bl-book-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(110px,1fr));
  gap:16px;
}
.bl-book{display:block;text-decoration:none;color:inherit;}
.bl-book__cover{
  position:relative;aspect-ratio:3/4;border-radius:var(--bl-radius-sm);
  overflow:hidden;background:var(--bl-ph-bg);
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--bl-border-light);
}
.bl-book__cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.bl-book__title{
  font-size:13px;color:var(--bl-ink);margin:8px 0 2px;
  overflow:hidden;white-space:nowrap;text-overflow:ellipsis;
}
.bl-book__author{font-size:12px;color:var(--bl-ink-muted);}

/* 我的书单 / 创建表单 */
.bl-form{
  background:var(--bl-card);border:1px solid var(--bl-border);
  border-radius:var(--bl-radius);padding:18px;margin-bottom:20px;
}
.bl-form__row{margin-bottom:12px;}
.bl-form__row label{display:block;font-size:13px;color:var(--bl-ink);margin-bottom:6px;}
.bl-input,.bl-textarea{
  width:100%;box-sizing:border-box;
  border:1px solid var(--bl-border);border-radius:var(--bl-radius-sm);
  padding:9px 12px;font-size:14px;color:var(--bl-ink);outline:none;
}
.bl-input:focus,.bl-textarea:focus{border-color:var(--bl-accent-light);}
.bl-btn{
  display:inline-block;background:var(--bl-accent);color:#fff;
  border:0;border-radius:var(--bl-radius-sm);padding:9px 22px;
  font-size:14px;cursor:pointer;
}
.bl-btn:hover{background:var(--bl-accent-dim);}

.bl-empty{
  text-align:center;color:var(--bl-ink-muted);padding:50px 0;font-size:14px;
}

@media (max-width:600px){
  .bl-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;}
  .bl-detail-head{flex-direction:column;}
}

/* 公开书单主页（用户维度） */
.bl-user-head{display:flex;align-items:center;gap:14px;margin:18px 0 6px;padding:18px 20px;background:#fff;border:1px solid #eee4cf;border-radius:10px;}
.bl-user-head .bl-avatar{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#d4a72c,#b8860b);color:#fff;font-size:24px;font-weight:600;display:flex;align-items:center;justify-content:center;flex:none;}
.bl-user-head__info{display:flex;flex-direction:column;gap:4px;}