/* Caelus 论坛 —— 主题变量沿用主站 theme.css，保证全站观感一致 */
:root {
  --bg-primary: #0b0b0b;
  --bg-secondary: #0b0b0b;
  --bg-card: #111;
  --bg-elevated: #171717;
  --text-primary: #f0f0f0;
  --text-secondary: #d0d0d0;
  --text-muted: #888;
  --border-color: rgba(255,255,255,0.06);
  --border-card: rgba(255,255,255,0.06);
  --shadow-card: 0 4px 16px rgba(0,0,0,0.3);
  --shadow-pop: 0 18px 50px rgba(0,0,0,0.55);
  --tag-bg: #0a1e33;
  --tag-color: #7db8e8;
  --tag-border: rgba(80,160,220,0.15);
  --accent: #0a84ff;
  --accent-soft: rgba(10,132,255,0.13);
  --accent-line: rgba(10,132,255,0.35);
  --danger: #ff6b6b;
  --card-hover-border: rgba(255,255,255,0.13);
  --input-bg: rgba(255,255,255,0.035);
  --hover-bg: rgba(255,255,255,0.045);
  --avatar-bg: #232323;
  --glow: rgba(10,132,255,0.07);
}
[data-theme="light"] {
  --bg-primary: #f5f5f5;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-elevated: #ffffff;
  --text-primary: #1a1a1a;
  --text-secondary: #2a2a2a;
  --text-muted: #555;
  --border-color: rgba(0,0,0,0.07);
  --border-card: rgba(0,0,0,0.06);
  --shadow-card: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-pop: 0 18px 50px rgba(0,0,0,0.16);
  --tag-bg: #e6f0ff;
  --tag-color: #0a4a7a;
  --tag-border: rgba(30,120,200,0.15);
  --accent: #0a84ff;
  --accent-soft: rgba(10,132,255,0.1);
  --accent-line: rgba(10,132,255,0.3);
  --danger: #d93636;
  --card-hover-border: rgba(0,0,0,0.13);
  --input-bg: #fafafa;
  --hover-bg: rgba(0,0,0,0.03);
  --avatar-bg: #e8e8e8;
  --glow: rgba(10,132,255,0.05);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'OPPO Sans 4.0', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  background-image: radial-gradient(760px 420px at 12% -8%, var(--glow), transparent 70%);
  background-attachment: fixed;
}
h1, h2, h3, h4 { font-weight: 500; -webkit-text-stroke: .3px currentColor; margin: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
input, textarea, select { font-family: inherit; }
::selection { background: var(--accent-soft); }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.22); border-radius: 4px; }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.2); }

/* ===== 顶栏 ===== */
.topbar {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; gap: 16px;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(11,11,11,0.82);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
[data-theme="light"] .topbar { background: rgba(245,245,245,0.85); }
.tb-brand { display: flex; align-items: center; gap: 10px; flex: none; }
.tb-brand img { height: 26px; width: auto; }
.tb-brand b { font-size: 1.02rem; font-weight: 500; letter-spacing: .01em; -webkit-text-stroke: .3px currentColor; }
.tb-brand span { font-size: .72rem; color: var(--text-muted); }
.tb-nav { display: flex; align-items: center; gap: 4px; flex: none; }
.tb-nav a {
  font-size: .84rem; color: var(--text-muted); padding: .34rem .6rem; border-radius: 8px;
  transition: color .2s, background .2s;
}
.tb-nav a:hover { color: var(--text-primary); background: var(--hover-bg); }
.tb-nav a.on { color: var(--text-primary); background: var(--hover-bg); }
.tb-search { flex: 1 1 auto; max-width: 340px; position: relative; }
.tb-search input {
  width: 100%; padding: .5rem .8rem .5rem 2rem; border-radius: 999px;
  border: 1px solid var(--border-color); background: var(--input-bg); color: var(--text-primary);
  font-size: .84rem; outline: none; transition: border-color .2s, background .2s;
}
.tb-search input:focus { border-color: var(--accent-line); background: var(--bg-card); }
.tb-search svg { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); width: 13px; height: 13px; fill: var(--text-muted); }
.tb-right { display: flex; align-items: center; gap: 9px; flex: none; margin-left: auto; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: .48rem .9rem; border-radius: 9px; border: 1px solid transparent;
  font-size: .84rem; background: transparent; color: var(--text-primary);
  cursor: pointer; transition: all .2s; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 14px rgba(10,132,255,0.25); }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost { border-color: var(--border-color); background: var(--input-bg); color: var(--text-secondary); }
.btn-ghost:hover { border-color: var(--card-hover-border); color: var(--text-primary); }
.btn:disabled { opacity: .55; cursor: default; transform: none; }

.theme-toggle {
  width: 34px; height: 34px; border-radius: 50%; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: var(--input-bg); border: 1px solid var(--border-color);
  color: var(--text-primary); cursor: pointer; transition: all .25s;
}
.theme-toggle:hover { transform: scale(1.07); }
.theme-toggle svg { width: 17px; height: 17px; fill: currentColor; transition: transform .4s cubic-bezier(.34,1.56,.64,1); }
.theme-toggle:hover svg { transform: rotate(30deg); }

.me-chip { display: flex; align-items: center; gap: 8px; padding: 3px 9px 3px 3px; border-radius: 999px; border: 1px solid var(--border-color); background: var(--input-bg); cursor: pointer; }
.me-chip:hover { border-color: var(--card-hover-border); }
.me-chip b { font-size: .8rem; font-weight: 400; max-width: 96px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ===== 布局 ===== */
.wrap {
  max-width: 1080px; margin: 0 auto; padding: 26px 22px 90px;
  display: grid; grid-template-columns: minmax(0,1fr) 258px; gap: 24px; align-items: start;
}
.main { min-width: 0; }
.side { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 74px; }

.card {
  background: var(--bg-card); border: 1px solid var(--border-card); border-radius: 15px;
  box-shadow: var(--shadow-card); padding: 18px;
}
.card-title {
  display: flex; align-items: center; justify-content: space-between;
  font-size: .82rem; color: var(--text-muted); margin-bottom: 12px; letter-spacing: .02em;
}

/* ===== 工具栏 ===== */
.toolbar { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.seg { display: flex; gap: 2px; padding: 3px; border-radius: 10px; background: var(--input-bg); border: 1px solid var(--border-color); }
.seg button {
  border: 0; background: transparent; color: var(--text-muted); font-size: .82rem;
  padding: .34rem .78rem; border-radius: 7px; cursor: pointer; transition: all .2s;
}
.seg button.on { background: var(--bg-card); color: var(--text-primary); box-shadow: 0 2px 8px rgba(0,0,0,0.18); }
.toolbar .grow { flex: 1 1 auto; }
.count-note { font-size: .78rem; color: var(--text-muted); }

/* ===== 帖子列表 ===== */
.post-list { display: flex; flex-direction: column; gap: 12px; }
.post-card {
  display: block; background: var(--bg-card); border: 1px solid var(--border-card);
  border-radius: 15px; padding: 17px 18px; box-shadow: var(--shadow-card);
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.post-card:hover { border-color: var(--card-hover-border); transform: translateY(-1px); box-shadow: 0 10px 26px rgba(0,0,0,0.22); }
[data-theme="light"] .post-card:hover { box-shadow: 0 10px 26px rgba(0,0,0,0.09); }
.pc-head { display: flex; align-items: center; gap: 9px; margin-bottom: 10px; }
.pc-head .pc-time { font-size: .74rem; color: var(--text-muted); margin-left: auto; flex: none; }
.pc-title { font-size: 1.02rem; line-height: 1.45; margin-bottom: 7px; }
.post-card:hover .pc-title { color: var(--accent); }
.pc-excerpt {
  font-size: .84rem; line-height: 1.68; color: var(--text-secondary);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 12px;
}
.pc-foot { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.pc-stats { margin-left: auto; display: flex; align-items: center; gap: 14px; font-size: .78rem; color: var(--text-muted); flex: none; }
mark.hl {
  background: var(--accent-soft); color: inherit;
  border-radius: 3px; padding: 0 1px;
}
.match-note {
  font-size: .76rem; line-height: 1.6; color: var(--text-muted);
  margin: -4px 0 12px; padding-left: 8px; border-left: 2px solid var(--border-color);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.match-note mark.hl { color: var(--text-secondary); }
.pc-stats i { display: inline-flex; align-items: center; gap: 5px; font-style: normal; }
.pc-stats svg { width: 13px; height: 13px; fill: currentColor; opacity: .8; }
.pc-stats .liked { color: var(--accent); }
.pc-stats .liked svg { opacity: 1; }

/* ===== 标签 ===== */
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
  font-size: .72rem; padding: .2rem .55rem; border-radius: 999px;
  background: var(--tag-bg); color: var(--tag-color); border: 1px solid var(--tag-border);
  transition: filter .2s; cursor: pointer;
}
.tag:hover { filter: brightness(1.18); }
.tag.plain { background: var(--input-bg); color: var(--text-muted); border-color: var(--border-color); }
.tag-list { display: flex; flex-wrap: wrap; gap: 7px; }
.tag-list .tag { display: inline-flex; align-items: center; gap: 5px; }
.tag-list .tag em { font-style: normal; opacity: .6; font-size: .68rem; }

/* ===== 头像 ===== */
.av {
  width: 27px; height: 27px; border-radius: 50%; flex: none; object-fit: cover;
  background: var(--avatar-bg); display: inline-flex; align-items: center; justify-content: center;
  font-size: .74rem; color: var(--text-secondary); overflow: hidden;
  border: 1px solid var(--border-color);
}
.av.sm { width: 22px; height: 22px; font-size: .68rem; }
.av.lg { width: 38px; height: 38px; font-size: .92rem; }
.who { display: flex; align-items: center; gap: 8px; min-width: 0; }
.who b { font-weight: 400; font-size: .82rem; white-space: nowrap; }
.who .sid { font-size: .7rem; color: var(--text-muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

/* ===== 主题标签条 ===== */
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.chip {
  font-size: .78rem; padding: .3rem .7rem; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--border-color); background: var(--input-bg); color: var(--text-muted);
  transition: all .2s;
}
.chip:hover { color: var(--text-primary); border-color: var(--card-hover-border); }
.chip.on { background: var(--accent-soft); border-color: var(--accent-line); color: var(--accent); }

/* ===== 帖子详情 ===== */
.post-full { padding: 24px 24px 20px; }
.post-full h1 { font-size: 1.42rem; line-height: 1.42; margin-bottom: 14px; }
.post-full .pc-head { margin-bottom: 0; }
.post-body {
  font-size: .94rem; line-height: 1.85; color: var(--text-secondary);
  white-space: pre-wrap; word-break: break-word; margin: 18px 0 4px;
}
.post-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.content-bar {
  display: flex; align-items: center; gap: 10px; margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--border-color);
}
.like-btn {
  display: inline-flex; align-items: center; gap: 6px; padding: .42rem .85rem; border-radius: 999px;
  border: 1px solid var(--border-color); background: var(--input-bg); color: var(--text-secondary);
  font-size: .82rem; cursor: pointer; transition: all .2s;
}
.like-btn:hover { border-color: var(--accent-line); color: var(--accent); }
.like-btn.on { background: var(--accent-soft); border-color: var(--accent-line); color: var(--accent); }
.like-btn svg { width: 14px; height: 14px; fill: currentColor; }

/* ===== 评论 ===== */
.cmt { display: flex; gap: 11px; padding: 15px 0; border-top: 1px solid var(--border-color); }
.cmt:first-child { border-top: 0; }
.cmt-main { flex: 1 1 auto; min-width: 0; }
.cmt-body { font-size: .86rem; line-height: 1.75; color: var(--text-secondary); white-space: pre-wrap; word-break: break-word; margin: 6px 0 0; }
.cmt-foot { display: flex; align-items: center; gap: 14px; margin-top: 7px; font-size: .74rem; color: var(--text-muted); }
.cmt-foot button { border: 0; background: transparent; color: inherit; cursor: pointer; font-size: .74rem; padding: 0; display: inline-flex; align-items: center; gap: 4px; }
.cmt-foot button:hover { color: var(--accent); }
.cmt-foot .on { color: var(--accent); }
.cmt-foot svg { width: 12px; height: 12px; fill: currentColor; }
.reply-ref { font-size: .74rem; color: var(--text-muted); margin-top: 4px; }
.reply-ref b { color: var(--accent); font-weight: 400; }

/* ===== 编辑器 ===== */
.editor { padding: 18px; }
.editor input[type="text"], .editor textarea, .field input, .field textarea {
  width: 100%; border: 1px solid var(--border-color); border-radius: 11px;
  background: var(--input-bg); color: var(--text-primary); padding: .62rem .8rem;
  font-size: .88rem; outline: none; transition: border-color .2s, background .2s;
}
.editor input[type="text"]:focus, .editor textarea:focus, .field input:focus, .field textarea:focus {
  border-color: var(--accent-line); background: var(--bg-card);
}
.editor textarea { min-height: 230px; resize: vertical; line-height: 1.7; }
.editor input.title-in { font-size: 1.02rem; font-weight: 500; -webkit-text-stroke: .3px currentColor; }
.ed-field { margin-bottom: 12px; }
.ed-foot { display: flex; align-items: center; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.helper { font-size: .74rem; color: var(--text-muted); }

/* ===== 空态 / 加载 ===== */
.empty { text-align: center; padding: 56px 20px; color: var(--text-muted); font-size: .86rem; }
.empty b { display: block; font-size: .95rem; color: var(--text-secondary); font-weight: 400; margin-bottom: 6px; }
.skel { height: 96px; border-radius: 15px; border: 1px solid var(--border-card); background: var(--bg-card); opacity: .55; animation: pulse 1.4s infinite ease-in-out; }
@keyframes pulse { 0%,100% { opacity: .45 } 50% { opacity: .8 } }

/* ===== 弹窗 ===== */
.modal {
  position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); padding: 20px;
}
.modal[hidden] { display: none; }
.modal-box {
  width: 100%; max-width: 400px; background: var(--bg-elevated); border: 1px solid var(--border-color);
  border-radius: 18px; padding: 24px; box-shadow: var(--shadow-pop);
}
.modal-box h3 { font-size: 1.02rem; margin-bottom: 6px; }
.modal-box .sub { font-size: .78rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 18px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: .78rem; color: var(--text-muted); margin-bottom: 5px; }
.ok-btn {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 9px;
  padding: .62rem; border-radius: 11px; border: 1px solid var(--border-color);
  background: var(--input-bg); color: var(--text-primary); font-size: .86rem;
  cursor: pointer; transition: all .2s; margin-top: 4px;
}
.ok-btn:hover { border-color: var(--accent-line); }
.ok-btn img { height: 17px; width: auto; border-radius: 4px; }
.divider { display: flex; align-items: center; gap: 10px; margin: 16px 0 12px; color: var(--text-muted); font-size: .72rem; }
.divider::before, .divider::after { content: ''; flex: 1 1 auto; height: 1px; background: var(--border-color); }
.msg { font-size: .78rem; line-height: 1.6; margin: 10px 0 0; min-height: 1.2em; }
.msg.err { color: var(--danger); }
.msg.ok { color: #3fbf7f; }
.link-btn { border: 0; background: transparent; color: var(--accent); font-size: .78rem; cursor: pointer; padding: 0; }
.link-btn:hover { text-decoration: underline; }

/* ===== 页脚 ===== */
.foot {
  border-top: 1px solid var(--border-color); padding: 22px 24px 30px;
  text-align: center; font-size: .74rem; color: var(--text-muted); line-height: 1.9;
}
.foot a:hover { color: var(--text-secondary); }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .wrap { grid-template-columns: 1fr; gap: 18px; padding: 18px 15px 70px; }
  .side { position: static; }
  .tb-nav { display: none; }
  .tb-search { max-width: none; }
  .post-full { padding: 20px 17px 16px; }
  .post-full h1 { font-size: 1.24rem; }
}
@media (max-width: 620px) {
  .topbar { padding: 10px 14px; gap: 10px; }
  .tb-search { order: 3; flex-basis: 100%; max-width: none; }
  .topbar { flex-wrap: wrap; }
  .me-chip b { display: none; }
  .pc-time { font-size: .7rem; }
  .md-bar { flex-wrap: wrap; }
}

/* ===== Markdown 渲染（帖子正文 / 评论） ===== */
.post-body, .cmt-body { white-space: normal; }
.post-body > *:first-child, .cmt-body > *:first-child { margin-top: 0; }
.post-body > *:last-child, .cmt-body > *:last-child { margin-bottom: 0; }
.post-body p, .cmt-body p { margin: 0 0 .8em; }
.post-body p:last-child, .cmt-body p:last-child { margin-bottom: 0; }
.md-h {
  font-weight: 500; -webkit-text-stroke: .3px currentColor; line-height: 1.45;
  color: var(--text-primary); margin: 1.3em 0 .5em;
}
.md-h1 { font-size: 1.3rem; }
.md-h2 { font-size: 1.15rem; }
.md-h3 { font-size: 1.03rem; }
.md-h4, .md-h5, .md-h6 { font-size: .95rem; }
.md-quote {
  margin: .9em 0; padding: .55em .9em; border-left: 2px solid var(--accent-line);
  background: var(--input-bg); border-radius: 0 9px 9px 0; color: var(--text-muted);
}
.md-list { margin: .8em 0; padding-left: 1.4em; }
.md-list li { margin: .26em 0; }
.md-hr { border: 0; border-top: 1px solid var(--border-color); margin: 1.5em 0; }
.md-icode {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .86em;
  padding: .12em .38em; border-radius: 5px; background: var(--input-bg);
  border: 1px solid var(--border-color);
}
.md-pre {
  margin: .9em 0; padding: .8em 1em; border-radius: 11px; overflow-x: auto;
  background: var(--input-bg); border: 1px solid var(--border-color);
}
.md-pre code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .82rem;
  line-height: 1.65; color: var(--text-secondary); white-space: pre;
}
.md-a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.md-img { display: block; max-width: 100%; border-radius: 10px; margin: .7em 0; }
.md-table-wrap { overflow-x: auto; margin: .9em 0; }
.md-table { border-collapse: collapse; width: 100%; font-size: .85rem; }
.md-table th, .md-table td { border: 1px solid var(--border-color); padding: .42em .72em; text-align: left; }
.md-table th { background: var(--input-bg); color: var(--text-primary); font-weight: 500; }
.md-empty { font-size: .82rem; color: var(--text-muted); margin: 0; }

/* ===== Markdown 编辑器：编辑 / 预览 + 工具栏 ===== */
.md-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.md-tabs {
  display: inline-flex; padding: 2px; border-radius: 9px;
  background: var(--input-bg); border: 1px solid var(--border-color);
}
.md-tabs button {
  border: 0; background: transparent; color: var(--text-muted); cursor: pointer;
  font-family: inherit; font-size: .78rem; padding: .26rem .78rem; border-radius: 7px;
  transition: all .18s;
}
.md-tabs button.on { background: var(--bg-card); color: var(--accent); }
.md-tools { display: flex; gap: 2px; flex-wrap: wrap; }
.md-tools button {
  width: 28px; height: 28px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid transparent; background: transparent; color: var(--text-muted);
  border-radius: 7px; cursor: pointer; font-family: inherit; font-size: .76rem;
  transition: all .18s;
}
.md-tools button:hover { background: var(--input-bg); border-color: var(--border-color); color: var(--text-primary); }
.md-preview {
  min-height: 230px; padding: .8rem 1rem; border-radius: 11px;
  border: 1px solid var(--border-color); background: var(--bg-card);
  font-size: .9rem; line-height: 1.8; color: var(--text-secondary); overflow-wrap: break-word;
}