:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: #121933;
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #ebf1ff;
  --muted: #9eb0d1;
  --accent: #7aa2ff;
  --good-bg: rgba(54, 211, 153, 0.15);
  --good-text: #7cf0bf;
  --bad-bg: rgba(255, 107, 107, 0.15);
  --bad-text: #ff9a9a;
  --warn-bg: rgba(255, 196, 82, 0.14);
  --warn-text: #ffd37a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #0a1020 0%, #0f1730 100%);
  color: var(--text);
}

.page-shell {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.hero, .toolbar, .stat-card, .node-card, .message {
  background: rgba(18, 25, 51, 0.9);
  border: 1px solid var(--panel-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hero {
  border-radius: 24px;
  padding: 28px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  max-width: 60ch;
}

.button, input, select, .link-button {
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  padding: 12px 14px;
  font: inherit;
}

.button {
  cursor: pointer;
  min-width: 120px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.stat-card {
  border-radius: 20px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-label, .node-type, dt {
  color: var(--muted);
}

.stat-card strong {
  font-size: 1.7rem;
}

.toolbar {
  margin-top: 20px;
  border-radius: 20px;
  padding: 16px;
  display: flex;
  gap: 12px;
}

.toolbar input {
  flex: 1;
}

.nodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.node-card {
  border-radius: 22px;
  padding: 20px;
}

.node-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.node-name {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.status-pill {
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.status-pill.online {
  background: var(--good-bg);
  color: var(--good-text);
}

.status-pill.offline {
  background: var(--bad-bg);
  color: var(--bad-text);
}

.status-pill.degraded {
  background: var(--warn-bg);
  color: var(--warn-text);
}

.node-details {
  margin: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.node-details div {
  min-width: 0;
}

.node-details dd {
  margin: 6px 0 0;
  word-break: break-word;
}

.node-links {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.link-button {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}

.link-button:hover {
  transform: translateY(-1px);
  border-color: rgba(122, 162, 255, 0.45);
  background: rgba(122, 162, 255, 0.12);
}

.message {
  margin-top: 20px;
  border-radius: 18px;
  padding: 16px;
}

.hidden {
  display: none;
}

@media (max-width: 860px) {
  .hero, .toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .page-shell {
    width: min(100% - 20px, 1200px);
    padding-top: 20px;
  }
  .stats, .node-details {
    grid-template-columns: 1fr;
  }
}