:root {
  --app-bg: #f4f6f8;
  --app-text: #263740;
  --app-muted: #63747d;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: auto;
  min-height: 0;
}

body {
  margin: 0;
  background: var(--app-bg);
  color: var(--app-text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem 2rem 5.5rem;
}

section > h3 {
  margin: 2rem 0 0.7rem;
  color: #304852;
  font-size: 1rem;
}

section > p {
  max-width: 900px;
  margin: 2rem 0 0;
  color: var(--app-muted);
  font-size: 0.78rem;
  line-height: 1.65;
}

.band-chart {
  box-shadow: 0 4px 13px #0000000c;
}

.legend {
  position: sticky;
  bottom: 0;
  width: max-content;
  max-width: calc(100% - 1rem);
  margin: 2rem auto -4.5rem;
}

.band-scroll {
  width: 100%;
}

.scroll-hint {
  display: none;
}

@media (max-width: 760px) {
  main {
    padding: 1rem 0.65rem 5.5rem;
  }

  section > h3 {
    margin-top: 1.6rem;
    font-size: 0.9rem;
  }

  .band-scroll {
    overflow-x: auto;
    padding: 0 0 8px;
    overscroll-behavior-inline: contain;
    scrollbar-width: thin;
  }

  .band-scroll .band-chart {
    width: 720px;
    min-width: 720px;
    margin-bottom: 0.25rem;
  }

  .scroll-hint {
    display: block;
    margin: 0 0 0.4rem;
    color: #7a8990;
    font-size: 0.62rem;
    text-align: right;
  }

  .legend {
    justify-content: flex-start;
    overflow-x: auto;
    max-width: 100%;
    padding-right: 12px;
    padding-left: 12px;
    white-space: nowrap;
  }
}

/* Ajustes finales de presentación */
.legend {
  left: auto;
  transform: none;
}

@media (max-width: 760px) and (orientation: portrait) {
  .band-scroll {
    overflow-x: visible;
  }

  .band-scroll .band-chart {
    width: 100%;
    min-width: 0;
  }

  .scroll-hint {
    text-align: center;
  }
}