/* ============================================
   澄曜 · 小说馆 — 阅读页样式（黑金配色）
   ============================================ */
:root{
  --bg:#080808;--bg-card:#141414;--bg-input:#0d0d0d;--border:#2a2a2a;
  --gold:#C9A84D;--gold-light:#E5C87C;--gold-dim:rgba(201,168,77,.12);
  --text:#e5e5e5;--text-dim:#888;--text-muted:#555;
  --font-serif:'Noto Serif SC','Georgia',serif;--font-sans:'Inter','Noto Sans SC',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:var(--font-sans);background:var(--bg);color:var(--text);overflow:hidden;
  -webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}

.app{display:flex;height:100vh}

/* ===== 侧边栏 ===== */
.sidebar{width:320px;min-width:320px;background:var(--bg-card);border-right:1px solid var(--border);
  display:flex;flex-direction:column;z-index:100}
.sidebar-header{padding:20px;border-bottom:1px solid var(--border)}
.sidebar-header-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.back-link{display:flex;align-items:center;gap:6px;color:var(--text-dim);text-decoration:none;font-size:13px;transition:color .2s}
.back-link:hover{color:var(--gold)}
.sidebar-close{display:none;background:none;border:none;color:var(--text-dim);cursor:pointer}
.sidebar-title{font-family:var(--font-serif);font-size:18px;font-weight:700;letter-spacing:2px}
.sidebar-info{font-size:12px;color:var(--text-muted);margin-top:4px}
.sidebar-info span{color:var(--gold)}
.sidebar-search{display:flex;align-items:center;gap:8px;margin:14px 16px;padding:0 12px;height:38px;
  background:var(--bg-input);border:1px solid var(--border);border-radius:8px;color:var(--text-muted)}
.sidebar-search input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:13px;font-family:inherit}
.story-list{flex:1;overflow-y:auto;list-style:none;padding:0 8px 16px}
.story-list::-webkit-scrollbar{width:6px}
.story-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.story-item{display:flex;gap:12px;align-items:center;padding:12px;margin:2px 0;border-radius:10px;cursor:pointer;transition:background .2s}
.story-item:hover{background:rgba(255,255,255,.03)}
.story-item.active{background:var(--gold-dim);border:1px solid rgba(201,168,77,.3)}
.story-item-cover{width:42px;height:56px;flex:none;border-radius:6px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a,#2a2a1a);display:flex;align-items:center;justify-content:center;color:var(--gold);border:1px solid var(--border)}
.story-item-cover img{width:100%;height:100%;object-fit:cover}
.story-item-info{flex:1;min-width:0}
.story-item-title{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.story-item-sub{font-size:12px;color:var(--text-muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.story-item-chapters{font-size:11px;color:var(--text-dim);margin-top:2px}
.story-empty{padding:32px 16px;text-align:center;color:var(--text-muted);font-size:13px}

/* ===== 主区域 ===== */
.main{flex:1;position:relative;display:flex;flex-direction:column;min-width:0}
.main-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.bg-gradient{position:absolute;inset:0;background:
  radial-gradient(ellipse 60% 50% at 50% -10%,rgba(201,168,77,.06),transparent 70%),
  radial-gradient(ellipse 50% 40% at 90% 110%,rgba(201,168,77,.04),transparent 70%)}
.bg-noise{position:absolute;inset:0;opacity:.03;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E")}

.main-header{display:flex;align-items:center;gap:16px;padding:14px 24px;border-bottom:1px solid var(--border);background:rgba(10,10,10,.7);backdrop-filter:blur(12px);z-index:10}
.sidebar-toggle{display:none;background:none;border:none;color:var(--text);cursor:pointer}
.header-brand{font-family:var(--font-serif);font-size:17px;font-weight:700;letter-spacing:4px;color:var(--gold)}
.header-actions{margin-left:auto;display:flex;gap:8px}
.header-btn{display:none;width:38px;height:38px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;color:var(--text-dim);cursor:pointer;align-items:center;justify-content:center;transition:all .2s}
.header-btn:hover{color:var(--gold);border-color:var(--gold)}

/* ===== 空状态 ===== */
.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);z-index:1}
.empty-icon{color:var(--gold);opacity:.35;margin-bottom:20px}
.empty-state h3{font-size:18px;color:var(--text-dim);margin-bottom:8px}
.empty-state p{font-size:13px}

/* ===== 书籍详情 ===== */
.book-view{flex:1;overflow-y:auto;padding:40px 8%;z-index:1}
.book-view::-webkit-scrollbar{width:6px}
.book-view::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.book-head{display:flex;gap:28px;margin-bottom:36px}
.book-cover{width:160px;height:220px;flex:none;border-radius:10px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a,#2a2a1a);display:flex;align-items:center;justify-content:center;color:var(--gold);border:1px solid var(--border);box-shadow:0 12px 32px rgba(0,0,0,.5)}
.book-cover img{width:100%;height:100%;object-fit:cover}
.book-info{flex:1;min-width:0}
.book-title{font-family:var(--font-serif);font-size:28px;font-weight:900;letter-spacing:2px;margin-bottom:10px}
.book-meta{font-size:13px;color:var(--text-dim);margin-bottom:12px}
.book-meta span{margin-right:14px}
.book-meta .author{color:var(--gold)}
.story-status{font-weight:500}
.story-status.serial{color:#4ade80}
.story-status.finished{color:var(--gold-light)}
.story-status.discontinued{color:#f87171}
.book-tags{margin-bottom:14px}
.book-tag{display:inline-block;padding:3px 12px;margin-right:8px;border-radius:20px;font-size:12px;background:var(--gold-dim);color:var(--gold);border:1px solid rgba(201,168,77,.25)}
.book-intro{font-size:14px;line-height:1.9;color:var(--text-dim);white-space:pre-line}
.share-btn{display:inline-flex;align-items:center;gap:7px;margin-top:18px;padding:9px 20px;background:var(--gold-dim);border:1px solid rgba(201,168,77,.35);border-radius:10px;color:var(--gold);font-size:13px;font-family:inherit;letter-spacing:1px;cursor:pointer;transition:all .2s}
.share-btn:hover{background:rgba(201,168,77,.2);border-color:var(--gold);transform:translateY(-1px)}
.share-btn svg{width:15px;height:15px}
.toast{position:fixed;left:50%;bottom:48px;transform:translateX(-50%) translateY(20px);background:var(--bg-card);border:1px solid var(--gold);color:var(--gold-light);padding:12px 24px;border-radius:10px;font-size:14px;letter-spacing:1px;opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;z-index:1000;box-shadow:0 8px 30px rgba(0,0,0,.5)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.book-chapters{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:24px}
.chapters-title{font-size:16px;font-weight:700;color:var(--gold);margin-bottom:16px;letter-spacing:2px}
.chapter-list{list-style:none}
.chapter-item{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .2s;border-radius:8px}
.chapter-item:hover{background:rgba(201,168,77,.06)}
.chapter-item:last-child{border-bottom:none}
.chapter-item .c-title{font-size:14px;color:var(--text)}
.chapter-item .c-no{font-size:12px;color:var(--text-muted);margin-right:10px}
.chapter-item .c-time{font-size:12px;color:var(--text-muted)}
.chapters-empty{padding:32px;text-align:center;color:var(--text-muted);font-size:13px}
/* 卷分组标题 */
.volume-head{display:flex;align-items:baseline;gap:10px;padding:16px 16px 8px;margin-top:6px;border-top:1px dashed var(--border)}
.volume-head:first-child{border-top:none;margin-top:0}
.volume-head .vh-name{font-size:15px;font-weight:700;color:var(--gold);letter-spacing:1px}
.volume-head .vh-intro{font-size:12px;color:var(--text-muted);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.volume-head .vh-count{font-size:12px;color:var(--text-muted);margin-left:auto}
.volume-head.vh-orphan .vh-name{color:var(--text-muted);font-weight:600}

/* ===== 阅读视图 ===== */
.reader-view{flex:1;display:flex;flex-direction:column;overflow:hidden;z-index:1}
.reader-nav{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;border-bottom:1px solid var(--border);background:rgba(10,10,10,.7);backdrop-filter:blur(12px)}
.reader-nav-btn{display:flex;align-items:center;gap:6px;padding:8px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;color:var(--text-dim);font-size:13px;cursor:pointer;transition:all .2s;font-family:inherit}
.reader-nav-btn:hover:not(:disabled){color:var(--gold);border-color:var(--gold)}
.reader-nav-btn:disabled{opacity:.3;cursor:not-allowed}
.reader-chapter-title{font-size:13px;color:var(--text-muted);max-width:50%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reader-content{flex:1;overflow-y:auto;padding:48px 12% 80px}
.reader-content::-webkit-scrollbar{width:6px}
.reader-content::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.reader-h2{font-family:var(--font-serif);font-size:22px;font-weight:700;text-align:center;letter-spacing:2px;margin-bottom:36px;color:var(--gold)}
.reader-text{font-family:var(--font-serif);font-size:17px;line-height:2.05;color:var(--text);text-align:justify;white-space:pre-wrap;word-break:break-word}
.reader-text p{margin-bottom:1.2em;text-indent:2em}

/* 字号档位 */
.reader-content.size-1 .reader-text{font-size:15px}
.reader-content.size-2 .reader-text{font-size:17px}
.reader-content.size-3 .reader-text{font-size:20px}
.reader-content.size-1{padding-left:15%;padding-right:15%}
.reader-content.size-3{padding-left:9%;padding-right:9%}

/* 底部章节导航 */
.reader-bottom-nav{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:56px;padding-top:24px;border-top:1px solid var(--border)}
.reader-bottom-nav .reader-nav-btn{min-width:110px;justify-content:center}
.reader-bottom-divider{width:1px;height:20px;background:var(--border)}

/* ===== 目录抽屉 ===== */
.catalog-drawer{position:fixed;top:0;right:0;bottom:0;width:320px;max-width:85vw;background:var(--bg-card);border-left:1px solid var(--border);transform:translateX(100%);transition:transform .3s;z-index:200;display:flex;flex-direction:column}
.catalog-drawer.open{transform:translateX(0)}
.drawer-header{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:1px solid var(--border)}
.drawer-header h3{font-size:16px;color:var(--gold);letter-spacing:2px}
.drawer-close{background:none;border:none;color:var(--text-dim);cursor:pointer}
.catalog-list{flex:1;overflow-y:auto;list-style:none;padding:8px}
.catalog-list::-webkit-scrollbar{width:6px}
.catalog-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.catalog-item{padding:12px 16px;border-radius:8px;cursor:pointer;font-size:14px;color:var(--text-dim);transition:background .2s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.catalog-item:hover{background:rgba(201,168,77,.06);color:var(--text)}
.catalog-item.active{background:var(--gold-dim);color:var(--gold)}
/* 目录抽屉内的卷分组标题 */
.catalog-vol{padding:14px 16px 6px;font-size:13px;font-weight:700;color:var(--gold);letter-spacing:1px;border-top:1px dashed var(--border)}
.catalog-vol:first-child{border-top:none}
.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:190;opacity:0;pointer-events:none;transition:opacity .3s}
.drawer-overlay.show{opacity:1;pointer-events:auto}

/* ===== 字号弹层 ===== */
.font-popover{position:fixed;top:64px;right:24px;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:14px;display:flex;align-items:center;gap:8px;z-index:210;box-shadow:0 12px 32px rgba(0,0,0,.5)}
.font-popover.hidden{display:none}
.font-label{font-size:12px;color:var(--text-muted);margin-right:4px}
.font-btn{padding:6px 12px;background:var(--bg-input);border:1px solid var(--border);border-radius:6px;color:var(--text-dim);font-size:13px;cursor:pointer;transition:all .2s;font-family:inherit}
.font-btn.active{background:var(--gold);color:#0a0a0a;border-color:var(--gold);font-weight:700}
.font-btn:hover{border-color:var(--gold);color:var(--gold)}

/* ===== 响应式 ===== */
@media(max-width:860px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;transform:translateX(-100%);transition:transform .3s;width:300px;min-width:300px}
  .sidebar.open{transform:translateX(0)}
  .sidebar-close{display:block}
  .sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:90;opacity:0;pointer-events:none;transition:opacity .3s}
  .sidebar-overlay.show{opacity:1;pointer-events:auto}
  .sidebar-toggle{display:block}
  .header-btn{display:flex}
  .book-view{padding:24px 20px}
  .book-head{flex-direction:column;gap:16px;align-items:center;text-align:center}
  .book-title{font-size:24px}
  .book-intro{text-align:left}
  .reader-content{padding:28px 6% 60px}
  .reader-content.size-1{padding-left:7%;padding-right:7%}
  .reader-content.size-3{padding-left:4%;padding-right:4%}
  .reader-nav{padding:10px 12px}
  .reader-nav-btn{font-size:12px;padding:8px 10px}
}
@media(max-width:480px){
  .book-cover{width:130px;height:180px}
  .chapter-item .c-time{display:none}
}