:root {
  --vpp-bg: #12161d;
  --vpp-surface: #1b212c;
  --vpp-fg: #e7ebf1;
  --vpp-border: #333c48;
  --vpp-accent: #2e6de0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--vpp-bg);
  color: var(--vpp-fg);
  font-family: -apple-system, "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;
  line-height: 1.5;
}
.vpp-container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
a { color: var(--vpp-accent); }

.vpp-site-header-bar { background: var(--vpp-surface); border-bottom: 1px solid var(--vpp-border); position: sticky; top: 0; z-index: 50; }
.vpp-header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.vpp-logo { font-weight: 700; font-size: 1.1rem; text-decoration: none; color: var(--vpp-fg); }
.vpp-primary-nav a { margin-left: 18px; text-decoration: none; color: var(--vpp-fg); opacity: .8; }
.vpp-primary-nav a.is-current { background: var(--vpp-fg); color: var(--vpp-surface); padding: 4px 12px; border-radius: 6px; opacity: 1; }

.vpp-page-head { padding: 28px 0 10px; }
.vpp-page-sub { opacity: .65; font-size: .92rem; }
.vpp-breadcrumb { opacity: .6; font-size: .85rem; }

.vpp-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin-bottom: 30px; }
.vpp-card { display: block; background: var(--vpp-surface); border: 1px solid var(--vpp-border); border-left: 5px solid #2e9e5b; border-radius: 10px; padding: 16px; text-decoration: none; color: inherit; transition: transform .15s ease, box-shadow .15s ease; }
.vpp-card:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,.3); }
.vpp-card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.vpp-card-head h3 { margin: 0; font-size: 1.05rem; }
.vpp-card-meta { font-size: .85rem; opacity: .65; margin: 4px 0 12px; }
.vpp-card-metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.vpp-metric { display: flex; flex-direction: column; }
.vpp-metric-label { font-size: .72rem; opacity: .6; }
.vpp-metric-value { font-size: 1rem; font-weight: 600; }

.vpp-badge { display: inline-block; padding: 2px 10px; border-radius: 999px; color: #fff; font-size: .72rem; font-weight: 600; white-space: nowrap; }

.vpp-site-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin-bottom: 30px; }
.vpp-site-list-item { display: block; background: var(--vpp-surface); border: 1px solid var(--vpp-border); border-radius: 10px; padding: 16px; text-decoration: none; color: inherit; }
.vpp-site-list-item h3 { margin: 0 0 4px; }
.vpp-site-list-item p { margin: 0; opacity: .6; font-size: .85rem; }

.vpp-hb-row { font-size: .85rem; opacity: .75; margin-bottom: 16px; }
.vpp-hb { margin-right: 10px; }
.vpp-hb-online { color: #2e9e5b; }
.vpp-hb-offline { color: #c62828; }

.vpp-controls { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.vpp-btn { border: 1px solid var(--vpp-border); background: var(--vpp-surface); color: var(--vpp-fg); padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: .88rem; }
.vpp-btn.vpp-btn-on { background: #2e9e5b; border-color: #2e9e5b; color: #fff; font-weight: 600; }
.vpp-btn-active { background: #2e6de0; color: #fff; box-shadow: 0 0 0 2px rgba(46,109,224,0.4); }
.vpp-btn-danger { border-color: #c62828; color: #c62828; }
.vpp-btn-sm { padding: 4px 10px; font-size: .78rem; }

.vpp-chart-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; margin-bottom: 24px; }
.vpp-chart-box { background: var(--vpp-surface); border: 1px solid var(--vpp-border); border-radius: 10px; padding: 14px; }
.vpp-chart-box h4 { margin: 0 0 8px; font-size: .9rem; opacity: .8; }

.vpp-alert-row { border: 1px solid var(--vpp-border); border-left: 4px solid var(--vpp-border); border-radius: 6px; padding: 10px 12px; margin-bottom: 8px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; font-size: .88rem; }
.vpp-alert-time { margin-left: auto; opacity: .55; font-size: .78rem; }

.vpp-empty, .vpp-error { padding: 24px; text-align: center; opacity: .7; }
.vpp-error { color: #ff6b6b; }

.vpp-site-footer { margin-top: 40px; padding: 20px 0; opacity: .5; font-size: .8rem; }

@media (max-width: 600px) {
  .vpp-card-metrics { grid-template-columns: 1fr 1fr; }
  .vpp-controls { flex-direction: column; }
  .vpp-btn { width: 100%; }
}