:root {
  --bg: #0b0f17;
  --panel: #121826;
  --panel-2: #161e2e;
  --border: #232c3d;
  --text: #e7ecf5;
  --muted: #8b96ab;
  --green: #2ecc71;
  --red: #ff5d5d;
  --amber: #f5a623;
  --blue: #4f8cff;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at top left, #131a29, #0b0f17 60%);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.header-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-title h1 {
  font-size: 22px;
  margin: 0;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 14px 3px rgba(79, 140, 255, 0.6);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
}

.conn-badge {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.conn-badge.connected { background: rgba(46, 204, 113, 0.15); color: var(--green); }
.conn-badge.connecting { background: rgba(245, 166, 35, 0.15); color: var(--amber); }
.conn-badge.disconnected { background: rgba(255, 93, 93, 0.15); color: var(--red); }

.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.summary-card {
  background: linear-gradient(145deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.summary-card .label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 6px;
}

.summary-card .value {
  font-size: 26px;
  font-weight: 700;
}

.summary-card.up .value { color: var(--green); }
.summary-card.down .value { color: var(--red); }
.summary-card.active .value { color: var(--blue); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
}

.card {
  background: linear-gradient(160deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 4px;
}

.card.up::before { background: var(--green); }
.card.down::before { background: var(--red); }
.card.pending::before { background: var(--amber); }

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
}

.card-url {
  font-size: 14px;
  font-weight: 600;
  word-break: break-all;
  line-height: 1.4;
}

.status-pill {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
}
.status-pill.up { background: rgba(46, 204, 113, 0.15); color: var(--green); }
.status-pill.down { background: rgba(255, 93, 93, 0.15); color: var(--red); }
.status-pill.pending { background: rgba(245, 166, 35, 0.15); color: var(--amber); }

.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  margin-bottom: 14px;
}

.metric .m-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 2px;
}

.metric .m-value {
  font-size: 15px;
  font-weight: 600;
}

.metric .m-value.active-pulse {
  color: var(--blue);
}

.uptime-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
  margin-bottom: 8px;
}

.uptime-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--green), #58e08a);
  transition: width 0.4s ease;
}

.uptime-label {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

.error-line {
  margin-top: 10px;
  font-size: 12px;
  color: var(--red);
  background: rgba(255, 93, 93, 0.08);
  border: 1px solid rgba(255, 93, 93, 0.25);
  border-radius: 8px;
  padding: 8px 10px;
  word-break: break-word;
}

.footer {
  margin-top: 36px;
  text-align: center;
  color: var(--muted);
  font-size: 12.5px;
}

.last-updated {
  font-variant-numeric: tabular-nums;
}