:root {
  --bg: #0f172a;
  --card: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --dim: #94a3b8;
  --green: #22c55e;
  --red: #ef4444;
  --blue: #3b82f6;
  --amber: #f59e0b;
  --purple: #a855f7;
  --cyan: #06b6d4;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 16px;
  max-width: 1400px;
  margin: 0 auto;
}

h1 { font-size: 1.4rem; color: var(--blue); }

/* Top bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.dim-label { font-size: .8rem; color: var(--dim); }

.top-bar select,
.top-bar button {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: .85rem;
}
.top-bar button:hover { background: var(--border); }

#api-url {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: .82rem;
  width: 280px;
}
#api-url:focus { outline: 1px solid var(--blue); border-color: var(--blue); }

/* Status bar */
.status-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
}
.stat .label {
  font-size: .75rem;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.stat .value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 4px;
}
.on { color: var(--green); }
.off { color: var(--dim); }

/* Sections */
.section { margin-bottom: 24px; }
.section h2 {
  font-size: 1rem;
  color: var(--dim);
  margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
}

/* Graphs grid */
.graphs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.graph-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  position: relative;
}
.graph-card h3 {
  font-size: .85rem;
  color: var(--dim);
  margin-bottom: 10px;
  font-weight: 600;
}
.graph-card canvas {
  width: 100% !important;
  max-height: 250px;
}
.graph-full { grid-column: 1 / -1; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: .82rem; }
th, td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--dim);
  font-weight: 600;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .5px;
  position: sticky;
  top: 0;
  background: var(--card);
}
tr:hover { background: rgba(59, 130, 246, .06); }

.scroll {
  max-height: 350px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: .72rem;
  font-weight: 600;
}
.badge-green  { background: rgba(34, 197, 94, .15);  color: var(--green); }
.badge-red    { background: rgba(239, 68, 68, .15);  color: var(--red); }
.badge-amber  { background: rgba(245, 158, 11, .15); color: var(--amber); }
.badge-blue   { background: rgba(59, 130, 246, .15); color: var(--blue); }

/* Misc */
#refresh-indicator { font-size: .75rem; color: var(--dim); }
.empty { text-align: center; padding: 32px; color: var(--dim); }

/* Tabs */
.tabs { display: flex; gap: 4px; margin-bottom: 12px; }
.tab {
  padding: 6px 14px;
  border-radius: 6px;
  font-size: .8rem;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--dim);
  transition: all .15s;
}
.tab.active {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

/* Responsive */
@media (max-width: 768px) {
  .graphs-grid { grid-template-columns: 1fr; }
  .stat .value { font-size: 1.2rem; }
  table { font-size: .75rem; }
  th, td { padding: 6px; }
  #api-url { width: 100%; }
}