*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; }
body {
  height: 100%;
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 13px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font: inherit; }

:root {
  --bg:        #090D18;
  --surface:   #0F1626;
  --surface-2: #162033;
  --surface-3: #1D2A40;
  --border:    #1E2D45;
  --border-2:  #2A3A55;
  --text:      #E2E8F0;
  --text-2:    #7A8FAD;
  --text-3:    #3D5070;
  --green:     #22C55E; --green-bg: #071A0F; --green-dim: #14532D;
  --yellow:    #EAB308; --yellow-bg: #181200; --yellow-dim: #713F12;
  --red:       #EF4444; --red-bg:   #180606; --red-dim:   #7F1D1D;
  --blue:      #3B82F6; --blue-bg:  #081428; --blue-dim:  #1E3A8A;
  --r: 8px; --r-lg: 12px;
  --mono: ui-monospace, "Cascadia Code", "Fira Code", monospace;
}

.shell {
  display: grid;
  grid-template-columns: 210px 1fr;
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 18px 14px 14px;
  border-bottom: 1px solid var(--border);
}
.logo-icon {
  width: 30px; height: 30px;
  background: var(--blue);
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; color: #fff; flex-shrink: 0;
}
.logo-name { font-size: 15px; font-weight: 500; letter-spacing: -.3px; }
.logo-tag {
  font-size: 9px; font-weight: 600; letter-spacing: .5px;
  background: var(--blue-bg); color: var(--blue);
  border: 1px solid var(--blue-dim);
  border-radius: 4px; padding: 1px 5px; margin-left: 2px;
}
.nav-group-label {
  font-size: 10px; font-weight: 500; letter-spacing: .6px;
  color: var(--text-3); text-transform: uppercase;
  padding: 10px 14px 4px;
}
.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 10px;
  margin: 1px 6px;
  border-radius: var(--r);
  color: var(--text-2); font-size: 13px;
  border: none; background: none; width: calc(100% - 12px); text-align: left;
  transition: background .1s, color .1s;
}
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--surface-3); color: var(--text); }
.nav-item i { font-size: 15px; width: 16px; }
.nav-alert-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--red); margin-left: auto; flex-shrink: 0;
}
.sidebar-spacer { flex: 1; }
.sidebar-user {
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: 9px;
}
.user-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--surface-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 500; color: var(--blue); flex-shrink: 0;
}
.user-name { font-size: 12px; font-weight: 500; }
.user-role { font-size: 10px; color: var(--text-2); }
.btn-signout {
  margin-left: auto; background: none; border: none;
  color: var(--text-3); font-size: 15px; padding: 2px;
}
.btn-signout:hover { color: var(--red); }

.main { display: flex; flex-direction: column; overflow: hidden; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 0 20px; height: 52px; flex-shrink: 0;
}
.page-title { font-size: 15px; font-weight: 500; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.live-badge {
  display: flex; align-items: center; gap: 5px;
  font-size: 11px; color: var(--green);
}
.live-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

.btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 11px;
  background: var(--surface-2); color: var(--text-2);
  border: 1px solid var(--border-2); border-radius: var(--r);
  font-size: 12px; transition: background .1s, color .1s;
}
.btn:hover { background: var(--surface-3); color: var(--text); }
.btn i { font-size: 14px; }
.btn-primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn-primary:hover { background: #2563eb; }

.content { padding: 16px 20px; overflow-y: auto; flex: 1; }

.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 10px; margin-bottom: 16px;
}
.stat-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 12px 14px;
}
.stat-label {
  font-size: 11px; color: var(--text-2); margin-bottom: 5px;
  display: flex; align-items: center; gap: 5px;
}
.stat-label i { font-size: 13px; }
.stat-val { font-size: 22px; font-weight: 500; letter-spacing: -.5px; font-family: var(--mono); }
.stat-sub { font-size: 10px; color: var(--text-2); margin-top: 2px; }

.section-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
}
.section-title {
  font-size: 11px; font-weight: 500; color: var(--text-2);
  text-transform: uppercase; letter-spacing: .5px;
}

.node-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px; margin-bottom: 16px;
}
.node-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden;
  cursor: pointer; transition: border-color .15s;
  border-left: 3px solid var(--border);
}
.node-card:hover { border-color: var(--border-2); }
.node-card.healthy { border-left-color: var(--green); }
.node-card.stale   { border-left-color: var(--yellow); }
.node-card.down    { border-left-color: var(--red); }
.node-card.unknown { border-left-color: var(--text-3); }

.nc-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 10px 12px 8px; border-bottom: 1px solid var(--border);
}
.nc-id { font-size: 14px; font-weight: 500; }
.nc-meta { font-size: 10px; color: var(--text-2); margin-top: 1px; }
.nc-body { padding: 8px 12px; }
.nc-metrics {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 3px 16px; margin-bottom: 8px;
}
.nc-metric { display: flex; align-items: center; justify-content: space-between; }
.m-label { font-size: 11px; color: var(--text-2); }
.m-val   { font-size: 11px; font-weight: 500; font-family: var(--mono); }
.nc-services { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 6px; }
.svc-pill {
  font-size: 9px; font-weight: 600; padding: 2px 6px; border-radius: 4px;
}
.svc-pill.on  { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-dim); }
.svc-pill.off { background: var(--red-bg);   color: var(--red);   border: 1px solid var(--red-dim); }
.nc-footer {
  font-size: 10px; color: var(--text-2);
  padding-top: 6px; margin-top: 4px; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}

.status-pill {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 10px; font-weight: 500; padding: 2px 7px; border-radius: 20px;
  flex-shrink: 0;
}
.status-pill.healthy { background: var(--green-bg); color: var(--green); border: 1px solid var(--green-dim); }
.status-pill.stale   { background: var(--yellow-bg); color: var(--yellow); border: 1px solid var(--yellow-dim); }
.status-pill.down    { background: var(--red-bg);   color: var(--red);   border: 1px solid var(--red-dim); }
.status-pill.unknown { background: var(--surface-3); color: var(--text-2); border: 1px solid var(--border-2); }

.alerts-panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden; margin-bottom: 16px;
}
.alerts-panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 14px; border-bottom: 1px solid var(--border);
  font-size: 12px; font-weight: 500; color: var(--text-2);
}
.alert-row {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 14px; border-bottom: 1px solid var(--border); font-size: 12px;
}
.alert-row:last-child { border-bottom: none; }
.alert-icon {
  width: 26px; height: 26px; border-radius: 6px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.alert-icon.down  { background: var(--red-bg); }
.alert-icon.down  i { font-size: 13px; color: var(--red); }
.alert-icon.stale { background: var(--yellow-bg); }
.alert-icon.stale i { font-size: 13px; color: var(--yellow); }
.alert-body { flex: 1; }
.alert-node { font-weight: 500; }
.alert-msg  { color: var(--text-2); }
.alert-time { font-size: 10px; color: var(--text-3); flex-shrink: 0; }
.all-clear  { padding: 12px 14px; font-size: 12px; color: var(--text-2); }

.ok   { color: var(--green); }
.warn { color: var(--yellow); }
.err  { color: var(--red); }
.info { color: var(--blue); }

.loading-screen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg); z-index: 100; font-size: 13px; color: var(--text-2);
}
.loading-placeholder {
  grid-column: 1/-1; padding: 24px; text-align: center; color: var(--text-2);
}
.empty-state { padding: 24px; text-align: center; color: var(--text-2); }

.node-detail-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; margin-bottom: 16px;
}
.detail-panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden;
}
.detail-panel-head {
  padding: 9px 14px; border-bottom: 1px solid var(--border);
  font-size: 11px; font-weight: 500; color: var(--text-2);
  text-transform: uppercase; letter-spacing: .5px;
  display: flex; align-items: center; gap: 6px;
}
.detail-panel-head i { font-size: 13px; }
.detail-rows { padding: 8px 14px; }
.detail-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 0; border-bottom: 1px solid var(--border); font-size: 12px;
}
.detail-row:last-child { border-bottom: none; }
.detail-key { color: var(--text-2); }
.detail-val { font-family: var(--mono); font-weight: 500; }

.links-row { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 14px; }
.ext-link {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 10px; border: 1px solid var(--border-2);
  border-radius: var(--r); font-size: 11px; color: var(--text-2);
  background: var(--surface-2); transition: all .1s;
}
.ext-link:hover { color: var(--blue); border-color: var(--blue-dim); background: var(--blue-bg); }
.ext-link i { font-size: 12px; }

.lan-list { padding: 4px 0; }
.lan-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 14px; border-bottom: 1px solid var(--border); font-size: 12px;
}
.lan-item:last-child { border-bottom: none; }
.lan-status-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.lan-status-dot.up       { background: var(--green); }
.lan-status-dot.degraded { background: var(--yellow); }
.lan-status-dot.down     { background: var(--red); }
.lan-status-dot.lost     { background: var(--red); opacity: .5; }
.lan-name { font-weight: 500; flex: 1; }
.lan-ip   { font-family: var(--mono); color: var(--text-2); }
.lan-lat  { font-family: var(--mono); min-width: 60px; text-align: right; }
.lan-age  { color: var(--text-3); font-size: 10px; min-width: 65px; text-align: right; }
.lan-pill {
  font-size: 9px; font-weight: 600; padding: 1px 6px; border-radius: 4px; flex-shrink: 0;
}
.lan-pill.up       { background: var(--green-bg); color: var(--green); }
.lan-pill.degraded { background: var(--yellow-bg); color: var(--yellow); }
.lan-pill.down     { background: var(--red-bg);   color: var(--red); }
.lan-pill.lost     { background: var(--red-bg);   color: var(--red); opacity: .6; }

.hb-table { width: 100%; border-collapse: collapse; font-size: 11px; }
.hb-table th {
  text-align: left; font-weight: 500; color: var(--text-2);
  padding: 6px 14px; border-bottom: 1px solid var(--border);
}
.hb-table td { padding: 5px 14px; border-bottom: 1px solid var(--border); }
.hb-table tr:last-child td { border-bottom: none; }
.hb-table td:first-child { font-family: var(--mono); color: var(--text-2); }

.back-link {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--text-2); margin-bottom: 14px;
  padding: 4px 8px; border-radius: var(--r);
}
.back-link:hover { background: var(--surface-2); color: var(--text); }

.login-shell {
  min-height: 100vh; display: flex;
  align-items: center; justify-content: center;
  background: var(--bg);
}
.login-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 32px 28px;
  width: 100%; max-width: 360px;
}
.login-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.login-title { font-size: 18px; font-weight: 500; }
.login-sub   { font-size: 13px; color: var(--text-2); margin-bottom: 20px; }
.form-label  { font-size: 12px; color: var(--text-2); margin-bottom: 5px; display: block; }
.form-input  {
  width: 100%; padding: 8px 10px;
  background: var(--surface-2); border: 1px solid var(--border-2);
  border-radius: var(--r); color: var(--text); font: inherit; font-size: 13px;
  outline: none;
}
.form-input:focus { border-color: var(--blue); }
.form-input::placeholder { color: var(--text-3); }
.login-btn {
  width: 100%; margin-top: 14px; padding: 9px;
  background: var(--blue); color: #fff; border: none;
  border-radius: var(--r); font-size: 13px; font-weight: 500;
  cursor: pointer; transition: background .1s;
}
.login-btn:hover { background: #2563eb; }
.login-btn:disabled { opacity: .5; cursor: not-allowed; }
.login-status { margin-top: 12px; font-size: 12px; text-align: center; min-height: 18px; }
.login-status.ok  { color: var(--green); }
.login-status.err { color: var(--red); }

.copy-val {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--mono); cursor: pointer; color: var(--text);
}
.copy-val:hover { color: var(--blue); }
.copy-val i { font-size: 12px; color: var(--text-3); }

body { overflow: auto !important; }
.shell { height: auto !important; min-height: 100vh; }
.main { overflow: visible !important; }
.content { overflow: visible !important; }

[hidden] { display: none !important; }