/* IBM Carbon-inspired dark theme */

body {
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  background: #161616;
  color: #f4f4f4;
  margin: 1rem;
}

h1 {
  font-weight: 400;
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
}

h2 {
  font-weight: 500;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
  border-bottom: 1px solid #393939;
  padding-bottom: 0.25rem;
}

.pill-row {
  margin: 1rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill {
  padding: 0.5rem 1rem;
  border: 1px solid #393939;
  border-radius: 0;
  cursor: pointer;
  background: #262626;
  color: #f4f4f4;
  font-size: 0.875rem;
  transition: background 0.2s, color 0.2s;
}

.pill:hover {
  background: #393939;
}

.pill.active {
  background: #0f62fe;
  border-color: #0f62fe;
  color: #fff;
}

.hidden {
  display: none;
}

a {
  color: #78a9ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  margin: 0.25rem 0;
  font-size: 0.95rem;
  line-height: 1.4;
}

/* Chart area */
.chart-scroll {
  overflow-y: auto;
  max-height: 600px;
  -webkit-overflow-scrolling: touch;
  border: 1px solid #393939;
  margin-top: 1rem;
}

.chart-container {
  min-width: 800px; /* for desktop */
}

/* ----------------- Responsive styles ----------------- */

/* Small screens (≤ 672px = Carbon 'sm') */
@media (max-width: 672px) {
  body {
    margin: 0.75rem;
    font-size: 0.875rem;
  }

  h1 {
    font-size: 1.25rem;
  }

  h2 {
    font-size: 1rem;
  }

  .pill-row {
    gap: 0.25rem;
  }

  .pill {
    font-size: 0.75rem;
    padding: 0.35rem 0.75rem;
  }

  li {
    font-size: 0.85rem;
    line-height: 1.3;
  }

  .chart-scroll {
    max-height: 400px; /* less viewport space */
    overflow-x: auto; /* allow sideways scroll */
  }

  .chart-container {
    min-width: 500px;
  }

  canvas#barChart {
    font-size: 10px !important; /* shrink axis labels */
  }
}

/* Medium screens (673px – 1056px = Carbon 'md') */
@media (max-width: 1056px) {
  body {
    margin: 1rem;
    font-size: 0.9rem;
  }

  .pill {
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
  }

  .chart-scroll {
    max-height: 500px;
  }

  .chart-container {
    min-width: 650px;
  }
}