:root {
  --bg: #0b1220;
  --panel: #111b2e;
  --panel-alt: #17233b;
  --text: #e8edf8;
  --muted: #a7b3cc;
  --accent: #4ea1ff;
  --border: #23314d;
  --danger: #ffb3b3;
}

* {
  box-sizing: border-box;
}

html {
  background: #070d18;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: Inter, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #09101c 0%, var(--bg) 35%, #070d18 100%);
}

a {
  color: var(--accent);
}

a:hover,
a:focus {
  color: #8fc3ff;
}

.site-header,
.dashboard-nav,
.source-bar,
.chart-grid,
.site-footer,
.error-panel {
  max-width: 1320px;
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding-top: 1.5rem;
  padding-bottom: 1rem;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 1.9rem;
  line-height: 1.15;
}

.subtitle {
  max-width: 780px;
  margin: 0.45rem 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.status-chip {
  flex: 0 0 auto;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.dashboard-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding-top: 0.25rem;
  padding-bottom: 0.75rem;
}

.dashboard-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.55rem 0.75rem;
  color: var(--text);
  text-decoration: none;
  background: rgba(23, 35, 59, 0.72);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.dashboard-nav a:hover,
.dashboard-nav a:focus,
.dashboard-nav a[aria-current="page"] {
  color: #ffffff;
  border-color: rgba(78, 161, 255, 0.7);
  background: rgba(78, 161, 255, 0.16);
}

.source-bar {
  padding-top: 0.25rem;
  padding-bottom: 1rem;
  color: var(--muted);
  line-height: 1.5;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(520px, 1fr));
  gap: 1rem;
  padding-bottom: 1.5rem;
}

.chart-card {
  overflow: hidden;
  background: rgba(23, 35, 59, 0.62);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
}

.chart-header h2 {
  margin: 0;
  color: #d8e4fa;
  font-size: 1rem;
  line-height: 1.35;
}

.chart-header a {
  flex: 0 0 auto;
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
}

.chart-card iframe {
  display: block;
  width: 100%;
  height: 475px;
  border: 0;
  background: #ffffff;
}

.loading,
.error-panel {
  color: var(--muted);
}

.loading {
  padding-top: 2rem;
}

.error-panel {
  padding-top: 4rem;
}

.error-panel h1 {
  color: var(--danger);
}

.site-footer {
  padding-top: 0.25rem;
  padding-bottom: 1.25rem;
  color: var(--muted);
}

@media (max-width: 760px) {
  .site-header {
    flex-direction: column;
    align-items: stretch;
  }

  h1 {
    font-size: 1.55rem;
  }

  .status-chip {
    align-self: flex-start;
  }

  .dashboard-nav {
    display: grid;
    grid-template-columns: 1fr;
  }

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

  .chart-header {
    flex-direction: column;
  }

  .chart-header a {
    white-space: normal;
  }

  .chart-card iframe {
    height: 390px;
  }
}