/* ═══ Ontology101 阅读器 · 目录 / 笔记 / AI 助手 ═══ */
:root{
  --rd-toc-w:264px;
  --rd-notes-w:368px;
  --rd-hl:rgba(255,214,64,.42);        /* 荧光笔 */
  --rd-hl-on:rgba(255,196,0,.62);
  --rd-ul:#E8A13D;                      /* 底线 */
  --rd-shadow:0 8px 30px rgba(67,26,56,.13);
}

/* ── 骨架 ── */
.rd-shell{display:flex;align-items:flex-start;min-height:100vh}
.rd-main{flex:1;min-width:0;display:flex;flex-direction:column}

/* ── 左侧目录 ── */
.rd-toc{
  width:var(--rd-toc-w);flex:none;position:sticky;top:0;height:100vh;overflow-y:auto;
  background:var(--paper);border-right:2px solid var(--line);padding:0 0 40px;
  transition:margin-left .22s ease, opacity .18s;
}
.rd-toc::-webkit-scrollbar{width:8px}
.rd-toc::-webkit-scrollbar-thumb{background:#DCCFC0;border-radius:4px}
.rd-toc-head{
  padding:16px 18px 12px;position:sticky;top:0;background:var(--paper);
  border-bottom:1px solid var(--line);z-index:2;
}
.rd-toc-head b{font-size:15px;color:var(--wine-deep)}
.rd-toc-head .sub{font-size:12px;color:var(--muted);margin-top:2px}
.rd-head-row{display:flex;align-items:center;justify-content:space-between;gap:8px}

/* 面板自身的收起按钮（« »） */
.rd-collapse{
  background:var(--paper);border:1.5px solid var(--line);border-radius:8px;
  width:28px;height:28px;padding:0;cursor:pointer;color:var(--muted);
  font-family:inherit;font-size:16px;font-weight:700;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;transition:.15s;flex:none;
}
.rd-collapse:hover{border-color:var(--wine);color:#fff;background:var(--wine)}

/* 收起后贴在屏幕边缘的把手 */
.rd-handle{
  position:fixed;top:50%;transform:translateY(-50%);z-index:70;
  background:var(--wine);color:#fff;border:none;cursor:pointer;
  width:26px;height:88px;padding:6px 0;font-family:inherit;font-size:12px;
  line-height:1.25;letter-spacing:1px;display:none;
  align-items:center;justify-content:center;text-align:center;
  box-shadow:0 6px 18px rgba(67,26,56,.22);transition:.15s;
}
.rd-handle:hover{background:var(--wine-deep);width:30px}
.rd-handle-l{left:0;border-radius:0 12px 12px 0}
.rd-handle-r{right:0;border-radius:12px 0 0 12px}
.rd-toc-group{padding:14px 0 0}
.rd-toc-label{
  font-size:11.5px;font-weight:800;letter-spacing:1.5px;color:var(--muted);
  padding:0 18px 6px;
}
.rd-toc a{
  display:block;padding:7px 18px 7px 20px;font-size:14px;color:var(--soft);
  border-left:3px solid transparent;line-height:1.5;transition:.12s;
}
.rd-toc a:hover{background:var(--wine-soft);color:var(--wine-deep)}
.rd-toc a.on{
  background:var(--wine-soft);color:var(--wine);font-weight:700;border-left-color:var(--wine);
}
.rd-toc a .n{font-size:11.5px;color:var(--muted);margin-right:6px;font-weight:700}
.rd-toc a.on .n{color:var(--wine)}
.rd-toc .rd-secs{padding:2px 0 8px}
.rd-toc .rd-secs a{
  font-size:12.5px;padding:4px 18px 4px 40px;color:var(--muted);
  border-left:3px solid transparent;
}
.rd-toc .rd-secs a:hover{color:var(--wine);background:var(--wine-soft)}

/* ── 顶栏 ── */
.rd-main{flex:1;min-width:0;display:flex;flex-direction:column}
.rd-topbar{
  display:flex;align-items:center;gap:10px;padding:10px 16px;
  background:rgba(251,244,236,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;
}
.rd-btn{
  background:var(--paper);border:2px solid var(--line);border-radius:999px;
  padding:5px 14px;font-size:13.5px;cursor:pointer;font-family:inherit;
  color:var(--soft);transition:.15s;white-space:nowrap;
  box-shadow:0 1px 3px rgba(67,26,56,.09);
}
.rd-btn:hover{border-color:var(--wine);color:var(--wine);box-shadow:0 3px 10px rgba(67,26,56,.16)}
.rd-btn.on{background:var(--wine);color:#fff;border-color:var(--wine)}
.rd-btn.on::after{content:"‹›";font-size:10px;opacity:.7;margin-left:6px;letter-spacing:-1px}
.rd-crumb{font-size:13.5px;color:var(--muted);flex:1;text-align:center;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rd-count{
  display:inline-block;background:var(--wine);color:#fff;border-radius:999px;
  font-size:11px;padding:0 7px;margin-left:4px;font-weight:700;
}

/* ── 右侧笔记面板 ── */
.rd-notes{
  width:var(--rd-notes-w);flex:none;position:sticky;top:0;height:100vh;
  background:var(--paper);border-left:2px solid var(--line);
  display:flex;flex-direction:column;transition:margin-right .22s ease, opacity .18s;
}
.rd-notes-head{
  display:flex;align-items:center;gap:8px;padding:12px 16px;
  border-bottom:1px solid var(--line);flex:none;
}
.rd-tabs{display:flex;gap:6px;flex:1}
.rd-tab{
  background:none;border:none;border-bottom:2px solid transparent;padding:4px 8px;
  font-size:13.5px;color:var(--muted);cursor:pointer;font-family:inherit;
}
.rd-tab.on{color:var(--wine);font-weight:700;border-bottom-color:var(--wine)}
.rd-notes-body{flex:1;overflow-y:auto;padding:14px 16px 20px}
.rd-notes-body::-webkit-scrollbar{width:8px}
.rd-notes-body::-webkit-scrollbar-thumb{background:#DCCFC0;border-radius:4px}

/* 划线卡片 */
.rd-hl{background:var(--paper);border:2px solid var(--line);border-radius:14px;padding:12px 14px;margin-bottom:10px;transition:.15s}
.rd-hl:hover{border-color:var(--wine);box-shadow:0 4px 14px rgba(67,26,56,.08)}
.rd-hl.focus{border-color:var(--wine);background:var(--wine-soft)}
.rd-hl-quote{
  font-size:13.5px;line-height:1.7;color:var(--soft);border-left:4px solid var(--rd-ul);
  padding-left:10px;margin-bottom:8px;cursor:pointer;
}
.rd-hl-quote.q-hl{border-left-color:#E8C13D;background:var(--rd-hl);border-radius:0 6px 6px 0}
.rd-hl-quote.q-fmt{border-left-color:#B9A99B;color:var(--muted)}
.rd-hl-quote.q-fmt del{background:rgba(196,69,46,.16);color:#8a3a26;text-decoration:line-through;padding:0 2px;border-radius:3px}
.rd-hl-quote.q-fmt ins{background:rgba(62,125,92,.18);color:#27543c;text-decoration:none;padding:0 2px;border-radius:3px}
.rd-hl-meta{font-size:11.5px;color:var(--muted);display:flex;gap:8px;align-items:center;margin-bottom:6px}
.rd-hl-note{
  width:100%;border:1.5px solid var(--line);border-radius:10px;padding:8px 10px;
  font-family:inherit;font-size:13.5px;line-height:1.65;resize:vertical;min-height:44px;
  background:#FFFEFB;color:var(--ink);
}
.rd-hl-note:focus{outline:none;border-color:var(--wine)}
.rd-hl-acts{display:flex;gap:8px;margin-top:6px}
.rd-mini{
  background:none;border:none;font-size:12px;color:var(--muted);cursor:pointer;
  padding:2px 6px;border-radius:6px;font-family:inherit;
}
.rd-mini:hover{background:var(--wine-soft);color:var(--wine)}
.rd-empty{text-align:center;color:var(--muted);font-size:13.5px;padding:34px 16px;line-height:1.9}
.rd-empty .big-ico{font-size:34px;display:block;margin-bottom:10px;opacity:.5}

/* ── AI 助手 ── */
.rd-ai{display:flex;flex-direction:column;gap:10px;margin-top:6px}
.rd-ai-setup{
  background:var(--amber-soft);border-radius:12px;padding:12px 14px;
  font-size:13px;color:#6b4a12;line-height:1.75;
}
.rd-ai-setup code{background:rgba(255,255,255,.6)}
.rd-ai-setup .row{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.rd-field{display:flex;flex-direction:column;gap:4px;margin-bottom:8px}
.rd-field label{font-size:12px;color:var(--muted);font-weight:700}
.rd-field input{
  border:1.5px solid var(--line);border-radius:9px;padding:7px 10px;
  font-family:inherit;font-size:13px;background:#FFFEFB;color:var(--ink);
}
.rd-field input:focus{outline:none;border-color:var(--wine)}

.rd-chat{display:flex;flex-direction:column;gap:12px}
.rd-msg{border-radius:14px;padding:11px 14px;font-size:14px;line-height:1.8}
.rd-msg.user{background:var(--wine);color:#fff;align-self:flex-end;max-width:88%;border-bottom-right-radius:4px}
.rd-msg.bot{background:#F7F1E8;color:var(--ink);border-bottom-left-radius:4px;white-space:pre-wrap}
.rd-msg.bot p{margin:0 0 8px}
.rd-msg.bot code{font-size:13px}
.rd-msg.err{background:var(--red-soft);color:var(--red);font-size:13px}
.rd-msg .rd-thinking{color:var(--muted);font-style:italic}

.rd-chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:2px}
.rd-chip{
  background:var(--wine-soft);border:1px solid #E2CFDE;border-radius:999px;
  padding:4px 11px;font-size:12px;color:var(--wine);cursor:pointer;font-family:inherit;
}
.rd-chip:hover{background:var(--wine);color:#fff;border-color:var(--wine)}

.rd-ask{display:flex;gap:8px;align-items:flex-end;margin-top:4px}
.rd-ask textarea{
  flex:1;border:1.5px solid var(--line);border-radius:12px;padding:9px 11px;
  font-family:inherit;font-size:13.5px;resize:vertical;min-height:42px;max-height:150px;
  background:#FFFEFB;color:var(--ink);line-height:1.6;
}
.rd-ask textarea:focus{outline:none;border-color:var(--wine)}
.rd-send{
  background:var(--wine);color:#fff;border:none;border-radius:12px;
  padding:10px 16px;font-size:13.5px;font-weight:700;cursor:pointer;font-family:inherit;
  white-space:nowrap;
}
.rd-send:disabled{opacity:.45;cursor:not-allowed}

/* 编辑建议卡 */
.rd-edit{
  border:2px solid var(--amber);border-radius:14px;padding:12px 14px;
  background:var(--amber-soft);margin-top:10px;
}
.rd-edit h5{margin:0 0 6px;font-size:13px;color:#8a5a00}
.rd-edit .diff{font-size:13px;line-height:1.7;color:#6b4a12}
.rd-edit .diff del{background:rgba(196,69,46,.16);color:#8a3a26;text-decoration:line-through;padding:0 2px}
.rd-edit .diff ins{background:rgba(62,125,92,.18);color:#27543c;text-decoration:none;padding:0 2px}
.rd-edit .row{display:flex;gap:8px;margin-top:10px}
.rd-edit button{
  border-radius:9px;padding:6px 14px;font-size:13px;cursor:pointer;font-family:inherit;
  border:2px solid var(--amber);background:var(--amber);color:#fff;font-weight:700;
}
.rd-edit button.ghost{background:none;color:#8a5a00}

/* ── 划线样式（正文中） ── */
mark.rd-mark{border-radius:3px;padding:1px 0;cursor:pointer;transition:.15s}
mark.rd-mark.mk-hl{background:var(--rd-hl);box-shadow:inset 0 -1px 0 rgba(232,161,61,.5)}
mark.rd-mark.mk-hl:hover{background:var(--rd-hl-on)}
mark.rd-mark.mk-ul{
  background:none;border-bottom:2.5px solid var(--rd-ul);padding-bottom:1px;
}
mark.rd-mark.mk-ul:hover{background:var(--rd-hl)}
mark.rd-mark.rd-flash{animation:rdFlash .85s ease}
@keyframes rdFlash{0%{background:var(--wine);color:#fff}100%{}}

/* ── 选中浮动工具条 ── */
.rd-pop{
  position:absolute;z-index:9999;display:none;flex-direction:column;
  padding:5px 7px;background:var(--wine-deep);border-radius:16px;
  box-shadow:var(--rd-shadow);max-width:min(94vw,600px);
}
.rd-pop.show{display:flex}
.rd-pop-row{display:flex;gap:2px;align-items:center}
.rd-pop button{
  background:none;border:none;color:#fff;font-size:14px;cursor:pointer;
  padding:6px 10px;border-radius:10px;font-family:inherit;white-space:nowrap;
  display:inline-flex;align-items:center;justify-content:center;gap:4px;line-height:1;
}
.rd-pop button:hover{background:rgba(255,255,255,.18)}
.rd-dot{
  width:9px;height:9px;border-radius:50%;display:inline-block;
  background:linear-gradient(135deg,#C4452E,#2F5C8A);
}
.rd-pop-sub{
  display:flex;gap:6px;align-items:center;flex-wrap:wrap;
  padding:7px 4px 2px;margin-top:5px;border-top:1px solid rgba(255,255,255,.2);
}
.rd-pop-sub[hidden]{display:none}
.rd-opt{
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
  border-radius:8px;color:#fff;padding:4px 11px;font-size:13px;cursor:pointer;
  font-family:inherit;line-height:1.4;
}
.rd-opt:hover{background:rgba(255,255,255,.3)}
.rd-swatch{
  width:25px;height:25px;padding:0;border-radius:50%;
  border:2px solid rgba(255,255,255,.55);font-size:11px;
}
.rd-editin{
  background:#fff;border:none;border-radius:8px;padding:6px 10px;
  font-family:inherit;font-size:13.5px;color:var(--ink);
}
.rd-editin:focus{outline:2px solid var(--amber)}

/* ── 正文里的格式元素 ── */
.rd-fmt{border-radius:2px}
.rd-bold{font-weight:700}
mark.rd-mark[data-hid],.rd-fmt[data-hid]{cursor:pointer}
mark.rd-mark[data-hid]:hover,.rd-fmt[data-hid]:hover{outline:1px dashed var(--wine)}

/* ── 正文中"已修改"标记 ── */
.rd-flag{
  display:flex;align-items:center;gap:8px;font-size:12px;color:#8a5a00;
  background:var(--amber-soft);border-radius:0 0 10px 10px;padding:5px 12px;
  margin:-10px 0 16px;border-left:4px solid var(--amber);
}
.rd-flag button{
  background:none;border:none;color:#8a5a00;text-decoration:underline;
  cursor:pointer;font-size:12px;font-family:inherit;padding:0;
}
.rd-flag button:hover{color:var(--wine)}

/* ── 收起的形态 ── */
.rd-shell.toc-off .rd-toc{margin-left:calc(-1 * var(--rd-toc-w));opacity:0;pointer-events:none}
.rd-shell.notes-off .rd-notes{margin-right:calc(-1 * var(--rd-notes-w));opacity:0;pointer-events:none}

/* ── 遮罩（窄屏） ── */
.rd-mask{position:fixed;inset:0;background:rgba(51,32,46,.35);z-index:80;display:none}
.rd-mask.show{display:block}

/* ── 窄屏适配 ── */
@media (max-width:1280px){
  :root{--rd-notes-w:330px;--rd-toc-w:236px}
}
@media (max-width:1080px){
  .rd-toc,.rd-notes{
    position:fixed;top:0;bottom:0;z-index:90;height:100vh;
    box-shadow:var(--rd-shadow);
  }
  .rd-toc{left:0}
  .rd-notes{right:0}
  .rd-shell.toc-off .rd-toc{margin-left:calc(-1 * var(--rd-toc-w));opacity:1}
  .rd-shell.notes-off .rd-notes{margin-right:calc(-1 * var(--rd-notes-w));opacity:1}
  .rd-shell:not(.toc-off) .rd-toc,.rd-shell:not(.notes-off) .rd-notes{opacity:1}
}