/* 整体布局：左侧导航（筛选 + 标签分类） | 顶栏 + (列表 | 详情) */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "tnum" 1;
}
a { color: var(--accent-text); text-decoration: none; }
a:hover { text-decoration: underline; }
.hidden { display: none !important; }
.sprite { display: none; }
.icon { width: 16px; height: 16px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
::selection { background: var(--accent-soft); }

/* 细滚动条 */
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 10px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }

.app { display: grid; grid-template-columns: 252px 1fr; height: 100vh; overflow: hidden; }

/* ---------- 侧边栏 ---------- */
.sidebar {
  background: var(--sidebar);
  border-right: 1px solid var(--sidebar-border);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: 16px 10px 12px;
  overflow-y: auto;
  min-height: 0;
}
.brand { display: flex; align-items: center; gap: 11px; padding: 2px 8px 16px; }
.brand-logo {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0; object-fit: cover; display: block;
  box-shadow: 0 0 0 1px var(--sidebar-border), 0 6px 16px -6px rgba(0, 0, 0, .55);
}
.brand b { display: block; color: var(--sidebar-strong); font: 600 14.5px/1.3 var(--display); letter-spacing: .2px; }
.brand small { font-size: 11px; color: var(--sidebar-muted); letter-spacing: .3px; }

.nav { display: flex; flex-direction: column; gap: 1px; }
.nav-group {
  font-size: 11px; font-weight: 600; letter-spacing: .6px; color: var(--sidebar-muted);
  padding: 16px 10px 6px; text-transform: uppercase;
}
.nav-item, .side-link {
  display: flex; align-items: center; gap: 10px;
  border: 0; background: transparent; color: var(--sidebar-text);
  font: inherit; font-size: 13px; text-align: left; padding: 6px 10px; border-radius: 7px; cursor: pointer;
  transition: background .12s, color .12s;
}
.nav-item span, .side-link span { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nav-item .icon, .side-link .icon { opacity: .75; }
.nav-item:hover, .side-link:hover { background: var(--sidebar-hover); color: var(--sidebar-strong); text-decoration: none; }
.nav-item.active { background: var(--sidebar-active); color: var(--sidebar-strong); font-weight: 600; }
.nav-item.active .icon { opacity: 1; color: var(--accent-text); }
.nav-item b { font-size: 11px; font-weight: 600; min-width: 20px; text-align: right; color: var(--sidebar-muted); }
.nav-item.active b { color: var(--accent-text); }
.nav-item b.zero { opacity: .5; }
.nav-item b.alert { background: var(--red); color: #fff; padding: 0 6px; border-radius: 9px; text-align: center; }

/* 标签分类树 */
.label-tree { display: flex; flex-direction: column; gap: 2px; }
.lg-head {
  width: 100%; display: flex; align-items: center; gap: 6px; border: 0; background: none; cursor: pointer;
  font: inherit; font-size: 12.5px; font-weight: 600; color: var(--sidebar-strong); padding: 5px 10px; border-radius: 7px;
}
.lg-head:hover { background: var(--sidebar-hover); }
.lg-name { flex: 1; text-align: left; }
.lg-head small { font-size: 11px; font-weight: 500; color: var(--sidebar-muted); display: flex; gap: 6px; align-items: center; }
.lg-head em { font-style: normal; color: #fff; background: var(--accent); border-radius: 8px; padding: 0 6px; line-height: 16px; }
.caret { width: 12px; height: 12px; position: relative; flex-shrink: 0; transition: transform .15s; }
.caret::before { content: ""; position: absolute; inset: 3px 4px 3px 3px; border: solid var(--sidebar-muted); border-width: 0 1.6px 1.6px 0; transform: rotate(-45deg); }
.lg.open .caret { transform: rotate(90deg); }
.lg-items { display: none; flex-direction: column; gap: 1px; padding: 2px 0 8px 12px; }
.lg.open .lg-items { display: flex; }
.lg-item {
  display: flex; align-items: center; gap: 8px; border: 0; background: none; cursor: pointer;
  font: inherit; font-size: 12.5px; color: var(--sidebar-text); padding: 4px 10px 4px 8px; border-radius: 6px; text-align: left;
  transition: background .12s, color .12s;
}
.lg-item i { width: 7px; height: 7px; border-radius: 50%; background: var(--g-color, var(--muted)); flex-shrink: 0; box-shadow: 0 0 0 3px color-mix(in srgb, var(--g-color, var(--muted)) 16%, transparent); }
.lg-item span { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lg-item b { font-size: 11px; font-weight: 500; color: var(--sidebar-muted); }
.lg-item:hover { background: var(--sidebar-hover); color: var(--sidebar-strong); }
.lg-item.active { background: color-mix(in srgb, var(--g-color, var(--accent)) 15%, transparent); color: var(--sidebar-strong); font-weight: 600; }
.lg-item.active b { color: var(--g-color); }
.lg-item.zero { opacity: .45; }
.lg-more { border: 0; background: none; cursor: pointer; font: inherit; font-size: 12px; color: var(--sidebar-muted); text-align: left; padding: 3px 10px 3px 23px; border-radius: 6px; }
.lg-more:hover { color: var(--accent-text); }
.lg-empty { font-size: 12px; color: var(--sidebar-muted); padding: 2px 10px; margin: 0; }

.sidebar-footer { margin-top: auto; padding-top: 10px; border-top: 1px solid var(--sidebar-border); display: flex; flex-direction: column; gap: 1px; }
.label-tree + .sidebar-footer { margin-top: auto; }
.sidebar > .label-tree { margin-bottom: 14px; }

/* ---------- 主区域 ---------- */
.main { display: flex; flex-direction: column; min-width: 0; overflow: hidden; }
.topbar {
  display: flex; align-items: center; gap: 14px; position: relative; z-index: 5;
  padding: 10px 20px; background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid var(--border);
}
.search-group { display: flex; gap: 8px; flex: 1; min-width: 0; }
.search-group .narrow { width: 140px; }
.status-group { display: flex; gap: 8px; }
.action-group { display: flex; gap: 8px; }

.panes { flex: 1; display: grid; grid-template-columns: minmax(340px, 420px) 1fr; min-height: 0; }

/* ---------- 列表 ---------- */
.list-pane { display: flex; flex-direction: column; min-height: 0; border-right: 1px solid var(--border); background: var(--surface); }
.list-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px 8px; }
.list-title { font: 600 13px/1 var(--display); color: var(--text); display: flex; align-items: baseline; gap: 8px; }
.list-title b { font-size: 12px; font-weight: 500; color: var(--muted); }
.issues { flex: 1; overflow-y: auto; padding: 2px 8px 10px; }
.pagination { display: flex; align-items: center; justify-content: space-between; padding: 6px 12px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); }

/* ---------- 详情 ---------- */
.detail-pane { overflow-y: auto; min-width: 0; background: var(--bg); }

@media (max-width: 1040px) {
  .app { grid-template-columns: 60px 1fr; }
  .brand div, .nav-group, .nav-item span, .nav-item b, .side-link span, .label-tree { display: none; }
  .brand { justify-content: center; padding-inline: 0; }
  .nav-item, .side-link { justify-content: center; padding: 8px; }
  .panes { grid-template-columns: 320px 1fr; }
  .search-group .narrow { display: none; }
}
@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .panes { grid-template-columns: 1fr; }
  .list-pane { max-height: 45vh; }
  .status-group { display: none; }
}