/* Personal Hub 全站样式（CSDN 风格：顶导航 + 左内容流 + 右边栏） */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --text: #1f2937;
  --text-2: #4b5563;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #f5f6f7;
  --card: #ffffff;
  --danger: #dc2626;
  --ok: #16a34a;
  --radius: 10px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
a { color: inherit; text-decoration: none; }
.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 13px; }
.err { color: var(--danger); font-size: 13px; }
.ok { color: var(--ok); font-size: 13px; }

/* ---------- 顶部导航 ---------- */
#site-nav {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand { font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: .2px; }
.brand span { color: var(--primary); }
.nav-links { display: flex; gap: 6px; }
.nav-links a {
  padding: 6px 12px;
  border-radius: 8px;
  color: var(--text-2);
  font-size: 14px;
}
.nav-links a:hover { background: #f3f4f6; color: var(--text); }
.nav-links a.active { color: var(--primary); font-weight: 600; background: #eff6ff; }
.nav-spacer { flex: 1; }

.nav-user { position: relative; }
.avatar-btn {
  display: flex; align-items: center; gap: 8px;
  background: none; border: none; cursor: pointer; padding: 4px 6px;
  border-radius: 8px; font: inherit; color: var(--text);
}
.avatar-btn:hover { background: #f3f4f6; }
.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600;
}
.avatar-name { font-size: 13px; max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.caret { color: var(--muted); font-size: 11px; }
.dropdown {
  position: absolute; right: 0; top: calc(100% + 6px);
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  min-width: 176px; padding: 6px; box-shadow: 0 8px 24px rgba(0,0,0,.08);
}
.dropdown a {
  display: block; padding: 9px 12px; border-radius: 8px; font-size: 13px; color: var(--text-2);
}
.dropdown a:hover { background: #f3f4f6; color: var(--text); }
.dropdown-role { padding: 6px 12px; font-size: 12px; color: var(--muted); border-bottom: 1px solid var(--line); margin-bottom: 4px; }

/* ---------- 布局 ---------- */
.page { max-width: 1200px; margin: 20px auto 40px; padding: 0 20px; }
.layout { display: flex; gap: 20px; align-items: flex-start; }
.layout-main { flex: 1; min-width: 0; }
.layout-side { width: 300px; flex-shrink: 0; }
@media (max-width: 900px) { .layout-side { display: none; } }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 16px;
}

/* ---------- 文章卡片 ---------- */
.post-card { transition: box-shadow .15s; }
.post-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.06); }
.post-card h2 { margin: 0; font-size: 17px; line-height: 1.4; }
.post-card h2 a:hover { color: var(--primary); }
.post-card .summary {
  margin: 8px 0 10px; color: var(--text-2); font-size: 13px; line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.post-meta { display: flex; align-items: center; gap: 14px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.tag {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  background: #eff6ff; color: var(--primary); font-size: 12px;
}
.tag:hover { background: #dbeafe; }
.tag-more { background: #f3f4f6; color: var(--muted); }

/* ---------- 侧边栏 ---------- */
.side-author { text-align: center; }
.side-author .avatar { width: 56px; height: 56px; font-size: 22px; margin: 4px auto 10px; }
.side-author .name { font-size: 16px; font-weight: 600; }
.side-stats { display: flex; justify-content: center; gap: 26px; margin-top: 12px; }
.side-stats b { display: block; font-size: 17px; }
.side-stats span { font-size: 12px; color: var(--muted); }
.side-title { font-size: 14px; font-weight: 600; margin: 0 0 10px; }
.side-list { list-style: none; margin: 0; padding: 0; }
.side-list li {
  display: flex; justify-content: space-between; gap: 10px;
  padding: 6px 0; font-size: 13px; color: var(--text-2);
  border-bottom: 1px dashed #f0f0f0;
}
.side-list li:last-child { border-bottom: none; }
.side-list li a { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-list li a:hover { color: var(--primary); }
.side-list .count { color: var(--muted); font-size: 12px; }
.side-quick { display: flex; gap: 8px; flex-wrap: wrap; }
.side-quick a {
  flex: 1; text-align: center; padding: 9px 0; border-radius: 8px;
  background: #eff6ff; color: var(--primary); font-size: 13px;
}
.side-quick a:hover { background: #dbeafe; }

/* ---------- 搜索 / 筛选 / 分页 ---------- */
.filter-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.search-input {
  flex: 1; min-width: 200px; padding: 9px 14px; border: 1px solid var(--line);
  border-radius: 999px; font-size: 13px; font-family: inherit; outline: none; background: #fff;
}
.search-input:focus { border-color: var(--primary); }
.chip {
  padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; cursor: pointer; font-size: 13px; color: var(--text-2);
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.pager { display: flex; justify-content: center; align-items: center; gap: 12px; margin: 20px 0 0; }
.pager button {
  padding: 8px 18px; border: 1px solid var(--line); background: #fff; border-radius: 8px;
  cursor: pointer; font-size: 13px; color: var(--text-2);
}
.pager button:disabled { opacity: .45; cursor: default; }
.pager button:not(:disabled):hover { border-color: var(--primary); color: var(--primary); }

/* ---------- 按钮 / 表单 ---------- */
.btn {
  display: inline-block; padding: 9px 18px; border: none; border-radius: 8px;
  background: var(--primary); color: #fff; cursor: pointer; font-size: 14px; font-family: inherit;
}
.btn:hover { background: var(--primary-dark); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-ghost { background: #f3f4f6; color: var(--text-2); }
.btn-ghost:hover { background: #e5e7eb; }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.link-btn { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 13px; padding: 0; font-family: inherit; }
.link-btn.danger { color: var(--danger); }
input[type=text], input[type=password], select, textarea {
  padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; font-family: inherit; outline: none; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); }
textarea { width: 100%; resize: vertical; }

/* ---------- 表格 ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
.table th { color: var(--muted); font-weight: 600; font-size: 12px; }
.table tr:hover td { background: #fafafa; }

/* ---------- 文章详情 ---------- */
.post-detail h1 { margin: 0 0 8px; font-size: 24px; line-height: 1.35; }
.post-detail .post-html { line-height: 1.85; font-size: 15px; color: var(--text); word-break: break-word; }
.post-html h1, .post-html h2, .post-html h3 { margin: 22px 0 10px; line-height: 1.4; }
.post-html pre {
  background: #0d1117; color: #e6edf3; padding: 14px 16px; border-radius: 8px;
  overflow-x: auto; font-size: 13px; line-height: 1.6;
}
.post-html code { background: #f3f4f6; padding: 2px 6px; border-radius: 4px; font-size: 13px; }
.post-html pre code { background: none; padding: 0; }
.post-html blockquote { margin: 12px 0; padding: 8px 16px; border-left: 4px solid var(--primary); background: #f8fafc; color: var(--text-2); }
.post-html img { max-width: 100%; }
.post-html table { border-collapse: collapse; }
.post-html th, .post-html td { border: 1px solid var(--line); padding: 6px 12px; }

/* ---------- 编辑器 ---------- */
.editor-grid { display: flex; gap: 16px; align-items: stretch; }
.editor-pane { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.editor-pane textarea { min-height: 480px; line-height: 1.7; font-size: 14px; }
.preview-pane {
  flex: 1; min-width: 0; background: #fff; border: 1px solid var(--line);
  border-radius: 8px; padding: 16px 18px; overflow-y: auto; max-height: 560px;
}
@media (max-width: 900px) { .editor-grid { flex-direction: column; } }

/* ---------- 控制台 tabs ---------- */
.console-tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.console-tab {
  padding: 10px 18px; cursor: pointer; font-size: 14px; color: var(--text-2);
  border: none; background: none; border-bottom: 2px solid transparent; font-family: inherit;
}
.console-tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ---------- 登录页 ---------- */
.login-wrap { max-width: 380px; margin: 9vh auto 0; padding: 0 20px; }
.login-logo { text-align: center; margin-bottom: 18px; }
.login-logo .brand { font-size: 24px; }
.login-logo p { color: var(--muted); font-size: 13px; margin: 6px 0 0; }
.login-wrap .card { padding: 26px 26px 22px; }
.form-item { margin-bottom: 14px; }
.form-item label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.form-item input { width: 100%; }
.login-wrap .btn { width: 100%; padding: 11px; }
.login-foot { text-align: center; margin-top: 14px; font-size: 13px; }
.login-foot a { color: var(--primary); }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line); margin-top: 30px; padding: 18px 20px;
  text-align: center; color: var(--muted); font-size: 12px; background: #fff;
}