/* ============================================================
   系统总览视图（view-overview） + 左侧导航树分组
   复用 base.css 的 .sidebar / .nav-item 布局体系；本文件仅补充分组标题、
   链接态与总览仪表盘样式。
   ============================================================ */

/* ── 侧边栏分组（base.css 已提供 .sidebar / .nav-item 基础样式） ── */
.sidebar-nav .nav-group { margin-bottom: 14px; }
.sidebar-nav .nav-group-title {
  font-size: 10px; text-transform: uppercase; letter-spacing: .6px;
  color: var(--text-muted); padding: 8px 12px 4px; font-weight: 700;
}
.sidebar-nav a.nav-item { text-decoration: none; color: var(--text-secondary); }
.sidebar-nav a.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ── 总览视图布局 ── */
#view-overview { gap: 0; }
.ov-header { margin-bottom: 22px; }
.ov-header h1 { font-size: 24px; margin: 0 0 4px; }
.ov-sub { color: var(--text-muted); font-size: 13px; margin: 0; }
.ov-section { margin-bottom: 28px; }
.ov-section-title {
  font-size: 13px; font-weight: 600; color: var(--text-secondary);
  margin: 0 0 12px; text-transform: uppercase; letter-spacing: .5px;
}
.ov-loading, .ov-empty, .ov-error { color: var(--text-muted); font-size: 13px; }

/* 服务健康 */
.ov-health { display: flex; flex-wrap: wrap; gap: 10px; }
.ov-health-item {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px;
  border-radius: 999px; background: var(--surface, #fff);
  border: 1px solid var(--border, #e4e8ee); font-size: 13px;
}
.ov-health-item small { color: var(--text-muted); }
.ov-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--text-muted); }
.ov-health-item.ok .ov-dot { background: #16a34a; box-shadow: 0 0 0 3px rgba(22,163,74,.15); }
.ov-health-item.bad .ov-dot { background: #dc2626; box-shadow: 0 0 0 3px rgba(220,38,38,.15); }

/* 指标卡片 */
.ov-metrics { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
.ov-card {
  background: var(--surface, #fff); border: 1px solid var(--border, #e4e8ee);
  border-radius: 14px; padding: 18px; cursor: pointer;
  transition: transform .12s, box-shadow .12s;
}
.ov-card:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,.08); }
.ov-card-icon { font-size: 26px; }
.ov-card-value { font-size: 32px; font-weight: 700; margin: 6px 0 2px; }
.ov-card-label { color: var(--text-muted); font-size: 13px; }

/* 能力域入口卡 */
.ov-domains { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.ov-domain {
  background: var(--surface, #fff); border: 1px solid var(--border, #e4e8ee);
  border-radius: 14px; padding: 16px; cursor: pointer;
  transition: border-color .12s, transform .12s;
}
.ov-domain:hover { border-color: var(--accent, #3b82f6); transform: translateY(-2px); }
.ov-domain-icon { font-size: 24px; }
.ov-domain-name { font-weight: 600; margin: 8px 0 4px; }
.ov-domain-desc { color: var(--text-muted); font-size: 12.5px; line-height: 1.5; }

/* 最近活动 */
.ov-activity { display: flex; flex-direction: column; gap: 6px; }
.ov-act-item {
  display: flex; align-items: center; gap: 14px; padding: 10px 14px;
  background: var(--surface, #fff); border: 1px solid var(--border, #e4e8ee);
  border-radius: 10px; font-size: 13px;
}
.ov-act-agent { font-weight: 600; min-width: 160px; }
.ov-act-status { padding: 2px 10px; border-radius: 999px; background: var(--bg-input, #f1f5f9); font-size: 12px; }
.ov-act-status.success { background: rgba(22,163,74,.16); color: #4ade80; }
.ov-act-status.error { background: rgba(220,38,38,.16); color: #f87171; }
.ov-act-time { color: var(--text-muted); margin-left: auto; }

/* 封装平台视图：iframe 撑满（阶段1 过渡，后续真内嵌）；顶部避让 #globalTopbar 用户浮层 */
#view-capsule { padding: 56px 0 0; }
#view-capsule iframe { flex: 1; width: 100%; border: 0; min-height: 0; display: block; }

/* 通用外部模块视图：iframe 撑满（其余域统一入口过渡）；顶部避让 #globalTopbar */
#view-external { padding: 56px 0 0; }
#view-external iframe { flex: 1; width: 100%; border: 0; min-height: 0; display: block; }