/* ── Reset / base ───────────────────────────────────────────────────────── */

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

html {
  height: 100%;
}

body {
  min-height: 100%;
  background: #0f172a;
  color: #e2e8f0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 13px;
}

/* ── Toolbar ────────────────────────────────────────────────────────────── */

#toolbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 16px;
  background: #1e2130;
  border-bottom: 1px solid #2a2e3e;
  flex-wrap: wrap;
}

#toolbar-left,
#toolbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.app-title {
  font-size: 14px;
  font-weight: 700;
  color: #38bdf8;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

/* ── Status pill ────────────────────────────────────────────────────────── */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: 0.03em;
}

.pill::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.pill--ok      { background: #1a2e1a; color: #4ade80; }
.pill--ok::before      { background: #4ade80; }
.pill--loading { background: #1e2540; color: #758696; }
.pill--loading::before { background: #758696; animation: blink 1s infinite; }
.pill--warn    { background: #2e2a14; color: #facc15; }
.pill--warn::before    { background: #facc15; }
.pill--error   { background: #2e1414; color: #f87171; }
.pill--error::before   { background: #f87171; }

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ── Meta text ──────────────────────────────────────────────────────────── */

.meta-text {
  color: #4c525e;
  font-size: 11px;
  white-space: nowrap;
}

/* ── Main content ───────────────────────────────────────────────────────── */

main {
  padding: 16px;
  max-width: 1400px;
  margin: 0 auto;
}

/* ── KPI cards ──────────────────────────────────────────────────────────── */

.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 14px 16px;
}

.card-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
  margin-bottom: 6px;
}

.card-value {
  font-size: 2rem;
  font-weight: 700;
  color: #f1f5f9;
  font-variant-numeric: tabular-nums;
}

.card-value.ok    { color: #4ade80; }
.card-value.warn  { color: #facc15; }
.card-value.alert { color: #f87171; }

.card-unit {
  font-size: 11px;
  color: #94a3b8;
  margin-top: 4px;
}

/* ── Panels ─────────────────────────────────────────────────────────────── */

.panel {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 16px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 8px;
}

.panel-header h2 {
  font-size: 12px;
  font-weight: 600;
  color: #94a3b8;
}

/* ── Chart panel ────────────────────────────────────────────────────────── */

.chart-panel {
  position: relative;
  overflow: hidden;
}

#chart-container {
  height: 360px;
  position: relative;
}

/* ── SPL tooltip ────────────────────────────────────────────────────────── */

#spl-tooltip {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 5;
  display: flex;
  align-items: baseline;
  gap: 8px;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(4px);
  border: 1px solid #2a2e3e;
  border-radius: 5px;
  padding: 5px 10px;
  font-size: 12px;
  pointer-events: none;
}

.tt-time { color: #758696; font-size: 11px; }
.tt-val  { font-weight: 600; font-variant-numeric: tabular-nums; }

/* ── Loading overlay ────────────────────────────────────────────────────── */

#loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(15, 23, 42, 0.7);
  z-index: 10;
  color: #758696;
  border-radius: 6px;
}

.spinner {
  width: 22px;
  height: 22px;
  border: 2px solid #2a2e3e;
  border-top-color: #38bdf8;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty state ────────────────────────────────────────────────────────── */

#empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #4c525e;
  font-size: 13px;
  pointer-events: none;
}

/* ── Timeframe buttons ──────────────────────────────────────────────────── */

.tf-buttons {
  display: flex;
  gap: 4px;
}

.tf-btn {
  background: transparent;
  color: #758696;
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.tf-btn:hover  { color: #d1d4dc; background: #2a2e3e; }
.tf-btn.active { color: #d1d4dc; background: #2a2e3e; border-color: #4c525e; }

/* ── Two-column layout ──────────────────────────────────────────────────── */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.two-col .panel { margin-bottom: 0; }

@media (max-width: 700px) {
  .two-col { grid-template-columns: 1fr; }
}

/* ── CSS bar charts ─────────────────────────────────────────────────────── */

.bar-chart {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.bar-label {
  width: 46px;
  font-size: 10px;
  color: #64748b;
  text-align: right;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.bar-track {
  flex: 1;
  height: 13px;
  background: #0f172a;
  border-radius: 2px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 2px;
  min-width: 2px;
  transition: width 0.3s ease;
}

.bar-count {
  width: 36px;
  font-size: 10px;
  color: #64748b;
  text-align: left;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

/* ── Tables ─────────────────────────────────────────────────────────────── */

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 6px 10px;
  text-align: left;
  border-bottom: 1px solid #1e293b;
  font-size: 12px;
}

thead tr {
  border-bottom: 1px solid #334155;
}

th {
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 10px;
  font-weight: 600;
  background: #1e293b;
}

tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #1a2540; }

/* ── Utility ────────────────────────────────────────────────────────────── */

.hidden { display: none !important; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}