/* === Resource Trends === */
#page-charts { min-width: 0; }

.resource-trends {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 92% 0%, var(--chart-atmosphere), transparent 34%),
    linear-gradient(145deg, var(--chart-panel-raised), var(--chart-panel) 58%);
  border: 1px solid var(--chart-panel-border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.resource-trends::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--chart-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--chart-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  content: '';
  opacity: 0.14;
  pointer-events: none;
}

.resource-trends > * {
  position: relative;
  z-index: 1;
}

.charts-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: start;
  padding: 26px 28px 22px;
  border-bottom: 1px solid var(--chart-panel-border);
}

.charts-heading { min-width: 0; }

.charts-eyebrow {
  display: block;
  margin-bottom: 7px;
  color: var(--chart-text);
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.charts-heading h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.charts-heading p {
  max-width: 720px;
  margin-top: 9px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.55;
}

.charts-hero-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.chart-freshness {
  display: grid;
  grid-template-columns: 8px minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  min-height: 44px;
  padding: 7px 11px;
  background: var(--chart-panel);
  border: 1px solid var(--chart-panel-border);
  border-radius: 9px;
}

.chart-freshness-dot {
  width: 8px;
  height: 8px;
  background: var(--chart-cpu);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--chart-atmosphere);
}

.chart-freshness[data-state="stale"] .chart-freshness-dot,
.chart-freshness[data-state="empty"] .chart-freshness-dot {
  background: var(--chart-threshold);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--chart-threshold) 18%, transparent);
}

.chart-freshness small,
.chart-freshness strong {
  display: block;
  white-space: nowrap;
}

.chart-freshness small {
  color: var(--chart-text);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.chart-freshness strong {
  margin-top: 1px;
  color: var(--text-primary);
  font-size: 11px;
  font-weight: 650;
}

.chart-refresh {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  background: var(--chart-panel-raised);
  border: 1px solid var(--chart-panel-border);
  border-radius: 9px;
  color: var(--text-primary);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, color 0.18s, transform 0.18s;
}

.chart-refresh svg { width: 16px; height: 16px; }
.chart-refresh:hover { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.chart-refresh:active { transform: translateY(1px); }
.chart-refresh:disabled { cursor: wait; opacity: 0.56; }

.chart-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
  padding: 18px 28px;
  background: rgba(0, 0, 0, 0.08);
  border-bottom: 1px solid var(--chart-panel-border);
}

[data-theme="light"] .chart-controls { background: rgba(255, 255, 255, 0.46); }

.chart-control-group {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.chart-control-group legend {
  margin-bottom: 7px;
  color: var(--chart-text);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.chart-tabs,
.chart-range-tabs {
  display: flex;
  gap: 6px;
  min-width: 0;
}

.chart-tab,
.range-tab {
  --chart-control-color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 54px;
  min-height: 44px;
  padding: 0 14px;
  background: var(--chart-panel);
  border: 1px solid var(--chart-panel-border);
  border-radius: 8px;
  color: var(--chart-text);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s, box-shadow 0.18s, color 0.18s;
}

.chart-tab::before {
  width: 7px;
  height: 7px;
  background: currentColor;
  border-radius: 50%;
  content: '';
  opacity: 0.72;
}

.chart-tab[data-metric="cpu"] { --chart-control-color: var(--chart-cpu); }
.chart-tab[data-metric="ram"] { --chart-control-color: var(--chart-ram); }
.chart-tab[data-metric="disk"] { --chart-control-color: var(--chart-disk); }
.chart-tab[data-metric="swap"] { --chart-control-color: var(--chart-swap); }
.chart-tab[data-metric="network"] { --chart-control-color: var(--chart-rx); }

.chart-tab:hover,
.range-tab:hover { border-color: var(--chart-control-color); color: var(--text-primary); }

.chart-tab.active,
.chart-tab[aria-pressed="true"],
.range-tab.active,
.range-tab[aria-pressed="true"] {
  background: var(--chart-panel-raised);
  border-color: var(--chart-control-color);
  box-shadow: inset 0 -2px 0 var(--chart-control-color);
  color: var(--chart-control-color);
}

.chart-kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 18px 28px 0;
}

.chart-kpi {
  position: relative;
  min-width: 0;
  padding: 14px 15px;
  overflow: hidden;
  background: var(--chart-panel-raised);
  border: 1px solid var(--chart-panel-border);
  border-radius: 10px;
}

.chart-kpi::after {
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: var(--chart-grid);
  content: '';
}

.resource-trends { --chart-active-color: var(--chart-cpu); }
.resource-trends[data-metric="ram"] { --chart-active-color: var(--chart-ram); }
.resource-trends[data-metric="disk"] { --chart-active-color: var(--chart-disk); }
.resource-trends[data-metric="swap"] { --chart-active-color: var(--chart-swap); }
.resource-trends[data-metric="network"] { --chart-active-color: var(--chart-rx); }
.chart-kpi-current::after { background: var(--chart-active-color); }

.chart-kpi dt {
  color: var(--chart-text);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.chart-kpi dd {
  min-width: 0;
  margin: 6px 0 2px;
  overflow: hidden;
  color: var(--text-primary);
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: clamp(18px, 2.2vw, 25px);
  font-weight: 800;
  letter-spacing: -0.035em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chart-kpi span {
  display: block;
  overflow: hidden;
  color: var(--chart-text);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chart-shell {
  min-width: 0;
  margin: 10px 28px 0;
  overflow: hidden;
  background: var(--chart-panel);
  border: 1px solid var(--chart-panel-border);
  border-radius: 12px;
}

.chart-shell-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  min-width: 0;
  padding: 16px 18px 13px;
  border-bottom: 1px solid var(--chart-panel-border);
}

.chart-shell-head h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: 16px;
  letter-spacing: -0.015em;
}

.chart-context-legends {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 14px;
  max-width: 58%;
}

.chart-context-legend {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 24px;
  color: var(--chart-text);
  font-size: 10px;
  white-space: nowrap;
}

.chart-legend-line {
  width: 22px;
  border-top: 2px dashed currentColor;
}

.chart-legend-threshold { color: var(--chart-threshold); }

.chart-legend-marker {
  width: 8px;
  height: 8px;
  background: currentColor;
  border-radius: 2px;
}

.chart-legend-incident {
  color: var(--chart-incident);
  box-shadow: 0 0 0 3px rgba(251, 113, 133, 0.12);
}

.chart-container {
  position: relative;
  min-width: 0;
}

#page-charts .chart-container {
  height: 360px;
  padding: 12px 14px 4px;
}

.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

.chart-status {
  position: absolute;
  inset: 12px 14px 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  background: rgba(20, 20, 36, 0.88);
  border-radius: 8px;
  color: var(--chart-text);
  font-size: 12px;
  text-align: center;
  backdrop-filter: blur(6px);
}

[data-theme="light"] .chart-status { background: rgba(255, 255, 255, 0.9); }
.chart-status[hidden] { display: none; }

.chart-status-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--chart-grid);
  border-top-color: var(--chart-cpu);
  border-radius: 50%;
  animation: chartStatusSpin 0.8s linear infinite;
}

.chart-status[data-state="error"] { color: var(--chart-incident); }
.chart-status[data-state="error"] .chart-status-spinner,
.chart-status[data-state="empty"] .chart-status-spinner { display: none; }

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

.chart-a11y-summary {
  margin: 0;
  padding: 11px 18px 13px;
  color: var(--chart-text);
  font-size: 11px;
  line-height: 1.5;
  border-top: 1px solid var(--chart-panel-border);
}

.chart-data-details {
  margin: 10px 28px 24px;
  background: var(--chart-panel);
  border: 1px solid var(--chart-panel-border);
  border-radius: 10px;
}

.chart-data-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  list-style-position: inside;
}

.chart-data-details summary small {
  color: var(--chart-text);
  font-size: 10px;
  font-weight: 500;
}

.chart-data-details[open] summary { border-bottom: 1px solid var(--chart-panel-border); }

.chart-data-scroll {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}

.chart-data-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  color: var(--text-secondary);
  font-size: 11px;
}

.chart-data-table caption {
  padding: 11px 14px 7px;
  color: var(--chart-text);
  text-align: left;
}

.chart-data-table th,
.chart-data-table td {
  padding: 10px 14px;
  border-top: 1px solid var(--chart-panel-border);
  text-align: left;
  white-space: nowrap;
}

.chart-data-table th {
  color: var(--chart-text);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.chart-data-placeholder td { color: var(--chart-text); text-align: center; }

@media (max-width: 960px) {
  .charts-hero { grid-template-columns: 1fr; gap: 18px; }
  .charts-hero-actions { justify-content: space-between; }
  .chart-controls { grid-template-columns: 1fr; gap: 15px; }
  .chart-range-group { justify-self: stretch; }
  .chart-kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chart-shell-head { flex-direction: column; gap: 10px; }
  .chart-context-legends { justify-content: flex-start; max-width: none; }
}

@media (max-width: 600px) {
  .charts-hero { padding: 20px 18px 17px; }
  .charts-heading h2 { font-size: 27px; }
  .charts-heading p { font-size: 12px; }
  .charts-hero-actions { display: grid; grid-template-columns: minmax(0, 1fr) auto; }
  .chart-freshness { min-width: 0; }
  .chart-freshness small,
  .chart-freshness strong { overflow: hidden; text-overflow: ellipsis; }
  .chart-refresh { width: 44px; padding: 0; }
  .chart-refresh span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }

  .chart-controls { padding: 15px 18px 16px; }
  .chart-tabs,
  .chart-range-tabs {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    width: 100%;
    gap: 5px;
  }
  .chart-tab,
  .range-tab {
    min-width: 0;
    padding: 0 5px;
    font-size: 10px;
  }
  .chart-tab { gap: 5px; }
  .chart-tab::before { width: 5px; height: 5px; }

  .chart-kpi-grid { gap: 7px; padding: 14px 18px 0; }
  .chart-kpi { padding: 12px; }
  .chart-kpi dd { font-size: 19px; }
  .resource-trends[data-metric="network"] .chart-kpi dd {
    overflow: visible;
    font-size: 15px;
    line-height: 1.3;
    text-overflow: clip;
    white-space: normal;
  }

  .chart-shell { margin: 8px 18px 0; }
  .chart-shell-head { padding: 14px; }
  .chart-context-legends { display: grid; gap: 6px; width: 100%; }
  .chart-context-legend { min-width: 0; white-space: normal; }
  #page-charts .chart-container { height: 260px; padding: 8px 6px 2px; }
  .chart-status { inset: 8px 6px 2px; }
  .chart-a11y-summary { padding: 10px 14px 12px; }

  .chart-data-details { margin: 8px 18px 18px; }
  .chart-data-details summary { align-items: flex-start; flex-direction: column; gap: 2px; }
}

@media (max-width: 360px) {
  .chart-kpi-grid { grid-template-columns: 1fr; }
  .chart-freshness strong { max-width: 160px; }
}

@media (prefers-reduced-motion: reduce) {
  .chart-refresh,
  .chart-tab,
  .range-tab { transition: none; }
  .chart-status-spinner { animation: none; }
}