:root {
  --bg: #0b0f14;
  --panel: #141b24;
  --panel2: #1a2330;
  --border: #243041;
  --text: #e8eef7;
  --muted: #8b9bb4;
  --accent: #4da3ff;
  --ok: #3dd68c;
  --warn: #f5a524;
  --bad: #f31260;
  --chip: #222c3a;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, #1a2a44 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #1a2838 0%, transparent 50%),
    var(--bg);
}

a { color: var(--accent); text-decoration: none; }
code {
  font-size: 0.85em;
  background: var(--chip);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.top {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.1rem 1.4rem;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 20, 28, 0.8);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand h1 {
  margin: 0;
  font-size: 1.3rem;
  letter-spacing: 0.04em;
}
.sub { margin: 0.2rem 0 0; color: var(--muted); font-size: 0.85rem; }

.controls { display: flex; flex-direction: column; gap: 0.55rem; align-items: flex-end; }
.meta { display: flex; flex-wrap: wrap; gap: 0.4rem; justify-content: flex-end; }
.pill {
  background: var(--chip);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
}
.pill-refresh {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
  border-color: rgba(77, 163, 255, 0.35);
  background: rgba(77, 163, 255, 0.1);
  font-variant-numeric: tabular-nums;
  min-width: 7.5rem;
  justify-content: center;
}
.pill-refresh strong {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.02em;
}
.pill-refresh.soon {
  border-color: rgba(245, 165, 36, 0.45);
  background: rgba(245, 165, 36, 0.12);
}
.pill-refresh.soon strong { color: var(--warn); }
.pill-refresh.refreshing {
  border-color: rgba(61, 214, 140, 0.45);
  background: rgba(61, 214, 140, 0.12);
}
.pill-refresh.refreshing strong { color: var(--ok); }
.refresh-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(77, 163, 255, 0.5);
  animation: pulse 2s ease-out infinite;
}
.pill-refresh.soon .refresh-dot { background: var(--warn); animation-duration: 0.8s; }
.pill-refresh.refreshing .refresh-dot { background: var(--ok); animation: none; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(77, 163, 255, 0.45); }
  70% { box-shadow: 0 0 0 6px rgba(77, 163, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(77, 163, 255, 0); }
}

.period {
  display: inline-flex;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem;
  gap: 0.15rem;
}
.period button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  cursor: pointer;
}
.period button.active {
  background: rgba(77, 163, 255, 0.18);
  color: var(--accent);
  font-weight: 600;
}
.period button:hover { color: var(--text); }

main { max-width: 1280px; margin: 0 auto; padding: 1.2rem 1.2rem 3rem; }

.section {
  margin: 1.6rem 0 0.75rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
}

.cards {
  display: grid;
  /* --cols set dynamically by JS so rows stay balanced */
  grid-template-columns: repeat(var(--cols, 4), minmax(0, 1fr));
  gap: 0.75rem;
}
.card {
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
  min-height: 88px;
}
.card .label {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.35rem;
}
.card .value { font-size: 1.3rem; font-weight: 700; line-height: 1.2; }
.card .hint { color: var(--muted); font-size: 0.78rem; margin-top: 0.25rem; }
.card.ok .value { color: var(--ok); }
.card.warn .value { color: var(--warn); }
.card.bad .value { color: var(--bad); }
.muted { color: var(--muted); font-style: italic; font-weight: 500; }

.svc-row { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.svc {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--chip);
}
.svc.on { color: var(--ok); border-color: rgba(61, 214, 140, 0.35); }
.svc.off { color: var(--bad); border-color: rgba(243, 18, 96, 0.35); }

.grid {
  display: grid;
  /* --cols set dynamically by JS based on width + tile count */
  grid-template-columns: repeat(var(--cols, 2), minmax(0, 1fr));
  gap: 1rem;
}
.graph {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 280px;
  min-width: 0; /* allow equal shrinking in grid */
}
.graph .head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.75rem 1rem 0.25rem;
}
.graph .head h3 { margin: 0; font-size: 0.95rem; font-weight: 600; }
.graph .head .unit { color: var(--muted); font-size: 0.75rem; }
.graph .canvas-wrap {
  position: relative;
  flex: 1;
  min-height: 220px;
  padding: 0.25rem 0.75rem 0.75rem;
}
.graph canvas { width: 100% !important; height: 100% !important; }
.graph .err {
  color: var(--bad);
  font-size: 0.85rem;
  padding: 1rem;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  padding: 1.5rem;
}

@media (max-width: 700px) {
  .controls { align-items: stretch; width: 100%; }
  .meta { justify-content: flex-start; }
  .period { width: 100%; justify-content: space-between; }
}