:root {
  --bg: #0f1117;
  --panel: #171b24;
  --panel-strong: #1d2430;
  --text: #edf2f7;
  --muted: #9aa7b7;
  --line: rgba(255, 255, 255, 0.09);
  --green: #22c55e;
  --yellow: #eab308;
  --red: #ef4444;
  --blue: #38bdf8;
  --cyan: #2dd4bf;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.16), transparent 36rem),
    linear-gradient(180deg, #11141c 0%, var(--bg) 42%);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0;
}

button,
input,
table {
  font: inherit;
}

.shell {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 18px 14px 30px;
}

.topbar {
  display: grid;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(23, 27, 36, 0.86);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.kicker,
.muted,
small,
footer,
.chart-card span,
.section-heading span {
  color: var(--muted);
}

.kicker {
  margin: 0 0 8px;
  font-size: 0.82rem;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 9vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.muted {
  margin-top: 10px;
  font-size: 0.9rem;
}

.top-actions {
  display: flex;
  align-items: stretch;
  gap: 10px;
  flex-wrap: wrap;
}

.status-badge,
button {
  min-height: 42px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  padding: 0 14px;
  font-weight: 700;
  white-space: nowrap;
}

.status-badge {
  color: var(--text);
  background: #263040;
}

.status-healthy {
  color: #052e16;
  background: var(--green);
}

.status-warning {
  color: #3f2e00;
  background: var(--yellow);
}

.status-critical {
  color: #450a0a;
  background: var(--red);
}

.status-unknown {
  color: var(--muted);
}

button {
  cursor: pointer;
  color: var(--text);
  background: #202738;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

button:hover {
  transform: translateY(-1px);
  border-color: rgba(56, 189, 248, 0.42);
  background: #263149;
}

button:disabled {
  cursor: progress;
  opacity: 0.68;
  transform: none;
}

main {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.metric-grid,
.chart-grid {
  display: grid;
  gap: 12px;
}

.metric-grid {
  grid-template-columns: 1fr;
}

.metric-card,
.chart-card,
.table-section {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(29, 36, 48, 0.94), rgba(23, 27, 36, 0.98));
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.24);
}

.metric-card {
  min-height: 132px;
  padding: 16px;
  display: grid;
  align-content: space-between;
  gap: 12px;
  overflow: hidden;
}

.metric-label {
  color: var(--muted);
  font-size: 0.86rem;
}

.metric-card strong {
  display: block;
  min-width: 0;
  font-size: clamp(1.75rem, 11vw, 2.8rem);
  line-height: 1;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.metric-card small {
  min-height: 1.2em;
  font-size: 0.84rem;
  overflow-wrap: anywhere;
}

.chart-card {
  min-height: 250px;
  padding: 14px;
}

.chart-card > div,
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.chart-card h2,
.section-heading h2 {
  font-size: 1rem;
  letter-spacing: 0;
}

canvas {
  display: block;
  width: 100%;
  height: 210px;
}

.table-section {
  padding: 14px;
  overflow: hidden;
}

.table-wrap {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

th,
td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
  font-size: 0.9rem;
}

th {
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  font-weight: 700;
}

tbody tr:last-child td {
  border-bottom: 0;
}

td {
  color: #dbe5f0;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 0 10px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
  background: #2a3242;
  color: var(--text);
}

.pill-ok {
  color: #052e16;
  background: var(--green);
}

.pill-warn {
  color: #3f2e00;
  background: var(--yellow);
}

.pill-bad {
  color: #450a0a;
  background: var(--red);
}

footer {
  padding: 22px 4px 0;
  font-size: 0.86rem;
  text-align: center;
}

@media (min-width: 560px) {
  .shell {
    padding: 22px 18px 34px;
  }

  .topbar {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .top-actions {
    justify-content: flex-end;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .shell {
    padding: 28px 22px 40px;
  }

  .metric-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .chart-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}