/* ===== 加载状态 ===== */
.page-loading{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:60vh;gap:14px;color:#999;font-size:14px;
}
.loading-spinner{
  width:36px;height:36px;border:3px solid #eee;border-top-color:var(--primary,#ff6b6b);
  border-radius:50%;animation:spin 0.8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ===== 书籍头部 ===== */
.book-header{
  background:var(--card);padding:20px 16px;display:flex;gap:16px;
}
.book-header .cover{
  width:100px;height:138px;border-radius:8px;
  flex-shrink:0;overflow:hidden;position:relative;
  box-shadow:0 4px 12px rgba(0,0,0,.15);
  background:#f0f1f4;
}
.book-header .cover .cover-img{width:100%;height:100%;object-fit:cover}
.book-header .cover .grad{width:100%;height:100%}
.book-header .cover .ct{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  color:rgba(255,255,255,.95);font-size:15px;font-weight:700;
  writing-mode:vertical-rl;letter-spacing:3px;text-align:center;
}
.book-header .info{flex:1;display:flex;flex-direction:column;gap:4px;min-width:0}
.book-header .info .b-title{font-size:19px;font-weight:700;line-height:1.3}
.book-header .info .b-author{font-size:13px;color:var(--text-2);margin-top:6px}
.book-header .info .b-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.book-header .info .b-tags .tag{
  font-size:10px;padding:2px 8px;border-radius:4px;
  background:var(--primary-bg);color:var(--primary);
}
.book-header .info .b-tags .tag.end{background:#f0fdf4;color:var(--success)}
.book-header .info .b-tags .tag.hot{background:#fef2f2;color:var(--danger)}
.book-header .info .b-stats{display:flex;gap:16px;margin-top:auto;padding-top:8px}
.book-header .info .b-stats .s{text-align:center}
.book-header .info .b-stats .s .v{font-size:15px;font-weight:700;color:var(--text)}
.book-header .info .b-stats .s .l{font-size:10px;color:var(--text-3);margin-top:1px}
.book-header .info .b-rating{
  display:flex;align-items:center;gap:4px;margin-top:8px;
}
.book-header .info .b-rating .score{font-size:20px;font-weight:700;color:var(--gold)}
.book-header .info .b-rating .stars{font-size:13px}
.book-header .info .b-rating .cnt{font-size:11px;color:var(--text-3)}

/* ===== 操作按钮 ===== */
.action-bar{
  background:var(--card);padding:0 16px 16px;display:flex;gap:10px;
}
.action-bar .btn{
  flex:1;height:40px;border-radius:20px;border:none;
  font-size:14px;font-weight:600;cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:4px;
  transition:transform .15s;
}
.action-bar .btn:active{transform:scale(.96)}
.action-bar .btn.shelf{
  background:var(--primary-bg);color:var(--primary);
  border:1px solid var(--primary-light);
}
.action-bar .btn.shelf.added{
  background:#f0fdf4;color:var(--success);border-color:var(--success);
}
.action-bar .btn.read{
  background:var(--primary);color:#fff;
}

/* ===== 数据条 ===== */
.stats-bar{
  margin:10px 14px 0;background:var(--card);border-radius:var(--radius);
  padding:14px;display:flex;
}
.stats-bar .item{
  flex:1;text-align:center;position:relative;
}
.stats-bar .item:not(:last-child)::after{
  content:"";position:absolute;right:0;top:20%;height:60%;width:1px;background:#f0f0f0;
}
.stats-bar .item .v{font-size:16px;font-weight:700;color:var(--text)}
.stats-bar .item .v .unit{font-size:11px;font-weight:400;color:var(--text-3)}
.stats-bar .item .l{font-size:11px;color:var(--text-3);margin-top:2px}

/* ===== 简介 ===== */
.section{margin:10px 14px 0;background:var(--card);border-radius:var(--radius);padding:16px}
.section .sec-title{
  font-size:15px;font-weight:700;margin-bottom:10px;
  display:flex;align-items:center;gap:6px;
}
.section .sec-title::before{
  content:"";width:3px;height:14px;background:var(--primary);border-radius:2px;
}
.section .sec-title .more{margin-left:auto;font-size:12px;color:var(--text-3);font-weight:400;cursor:pointer;text-decoration:none}

.synopsis{font-size:13px;color:var(--text-2);line-height:1.8}
.synopsis.collapsed{
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
}
.synopsis-expand{
  margin-top:8px;font-size:12px;color:var(--primary);cursor:pointer;
  display:flex;align-items:center;gap:2px;
}

/* ===== 章节列表 ===== */
.chapter-list{display:flex;flex-direction:column}
.chapter-list .ch{
  display:flex;align-items:center;padding:12px 0;
  border-bottom:1px solid #f5f5f5;cursor:pointer;
}
.chapter-list .ch:last-child{border-bottom:none}
.chapter-list .ch:active{background:#f9fafb}
.chapter-list .ch .num{
  width:28px;font-size:12px;color:var(--text-3);flex-shrink:0;
}
.chapter-list .ch .name{
  flex:1;font-size:13px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.chapter-list .ch .name.free::before{
  content:"免费";font-size:9px;background:var(--success);color:#fff;
  padding:1px 4px;border-radius:2px;margin-right:6px;
}
.chapter-list .ch .name.unlocked::before{
  content:"已解锁";font-size:9px;background:#eef2ff;color:#4a67c5;
  padding:1px 4px;border-radius:2px;margin-right:6px;
}
.chapter-list .ch .name.paid::before{
  content:attr(data-gold);font-size:9px;background:#fff5e6;color:var(--gold);
  padding:1px 4px;border-radius:2px;margin-right:6px;
}
.chapter-list .ch .time{font-size:11px;color:var(--text-3);flex-shrink:0;margin-left:8px}

/* ===== 读者评论 ===== */
.review-item{padding:12px 0;border-bottom:1px solid #f5f5f5}
.review-item:last-child{border-bottom:none}
.review-item .r-head{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.review-item .r-head .avatar{
  width:28px;height:28px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;flex-shrink:0;
}
.review-item .r-head .r-name{font-size:13px;font-weight:600}
.review-item .r-head .r-stars{font-size:11px;color:var(--gold)}
.review-item .r-head .r-time{margin-left:auto;font-size:11px;color:var(--text-3)}
.review-item .r-text{font-size:13px;color:var(--text-2);line-height:1.6}
.review-item .r-foot{display:flex;gap:16px;margin-top:8px}
.review-item .r-foot .act{
  font-size:11px;color:var(--text-3);cursor:pointer;
  display:flex;align-items:center;gap:3px;
}

/* ===== 相似推荐 ===== */
.rec-scroll{
  display:flex;gap:12px;overflow-x:auto;padding-bottom:4px;
  -webkit-overflow-scrolling:touch;
}
.rec-scroll::-webkit-scrollbar{display:none}
.rec-card{
  flex-shrink:0;width:76px;cursor:pointer;transition:transform .15s;
}
.rec-card:active{transform:scale(.95)}
.rec-card .cover{
  width:76px;height:104px;border-radius:6px;overflow:hidden;
  position:relative;margin-bottom:6px;
  background:#f0f1f4;
}
.rec-card .cover .cover-img{width:100%;height:100%;object-fit:cover}
.rec-card .cover .grad{width:100%;height:100%}
.rec-card .cover .ct{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  color:rgba(255,255,255,.95);font-size:11px;font-weight:600;
  writing-mode:vertical-rl;letter-spacing:1px;
}
.rec-card .name{
  font-size:12px;font-weight:500;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.rec-card .author{font-size:10px;color:var(--text-3);margin-top:1px}

/* ===== 底部操作栏 ===== */
.bottom-bar{
  position:fixed;bottom:0;left:50%;transform:translateX(-50%);
  width:100%;max-width:430px;background:var(--card);
  display:flex;align-items:center;padding:10px 16px;
  border-top:1px solid #f0f0f0;z-index:100;gap:12px;
  padding-bottom:calc(10px + var(--safe-bottom));
}
.bottom-bar .b-ic{
  display:flex;flex-direction:column;align-items:center;gap:2px;
  cursor:pointer;color:var(--text-3);width:44px;
}
.bottom-bar .b-ic .emoji{font-size:18px}
.bottom-bar .b-ic .lb{font-size:9px}
.bottom-bar .b-ic.active{color:var(--primary)}
.bottom-bar .b-btn{
  flex:1;height:40px;border-radius:20px;border:none;
  font-size:14px;font-weight:600;cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:4px;
  transition:transform .15s;
}
.bottom-bar .b-btn:active{transform:scale(.96)}
.bottom-bar .b-btn.shelf{
  background:var(--primary-bg);color:var(--primary);
  border:1px solid var(--primary-light);flex:0 0 100px;
}
.bottom-bar .b-btn.shelf.added{
  background:#f0fdf4;color:var(--success);border-color:var(--success);
}
.bottom-bar .b-btn.read{
  background:var(--primary);color:#fff;flex:1;
}