html, body {
  overflow: visible;
  height: auto;
}

main {
  height: auto;
  display: block;
  padding: var(--space-12) var(--space-16);
}

.cta-link {
  display: inline-block;
  margin-top: 0;
  font-size: var(--text-lg);
  letter-spacing: 0.08em;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  width: fit-content;
}

.cta-link:hover {
  color: var(--off-white);
  border-bottom-color: var(--off-white);
}

.contact-cta {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(240, 237, 232, 0.1);
}

.contact-copy {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.contact-copy-email {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--off-white);
}

.copy-email-btn {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.copy-email-btn:hover {
  background: var(--accent);
  color: var(--black);
}

.copy-email-btn.is-copied {
  color: var(--off-white);
  border-color: var(--off-white);
}

.footer-microcopy {
  max-width: 46rem;
  font-size: var(--text-xs);
  color: var(--dim);
  line-height: var(--leading-normal);
  padding: var(--space-12) 0;
  border-top: 1px solid rgba(240, 237, 232, 0.1);
}

.footer-company {
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--off-white);
  margin-bottom: var(--space-3);
}

main footer {
  margin-top: var(--space-8);
  opacity: 1;
  animation: none;
}

@media (max-width: 600px) {
  main {
    padding: var(--space-8);
  }

  .contact-copy {
    flex-direction: column;
    align-items: flex-start;
  }
}

.beat {
  min-height: 65vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 46rem;
  padding: var(--space-16) 0;
}

#problem h2 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-light);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
}

.beat h2 {
  font-size: var(--text-xl);
  font-weight: var(--weight-light);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
}

.beat p {
  font-size: var(--text-md);
  color: var(--off-white);
  margin-bottom: var(--space-5);
  line-height: var(--leading-normal);
}

.beat p strong {
  color: var(--accent);
  font-weight: var(--weight-regular);
}

/* pinned visual */

.pin-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.pin-visual-col {
  position: sticky;
  top: calc(12vh + var(--header-height));
  height: calc(76vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
}

.beats-col {
  display: flex;
  flex-direction: column;
}

.beat-visual-mobile {
  display: none;
}

.bar-chart {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.bar-track {
  position: relative;
  width: 140px;
  height: 360px;
  flex-shrink: 0;
}

.earth-line {
  position: absolute;
  left: -6.5rem;
  right: -3rem;
  bottom: 0;
  height: 0;
  border-top: 1px dashed var(--dim);
}

.earth-label,
.earth-value {
  position: absolute;
  left: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
  white-space: nowrap;
}

.earth-label {
  top: -1.1rem;
}

.earth-value {
  top: 0.4rem;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  text-transform: none;
}

.orbital-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column-reverse;
}

.orbital-label {
  position: absolute;
  bottom: -1.75rem;
  left: 0;
  width: 100%;
  text-align: center;
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--dim);
}

.segment {
  width: 100%;
  height: 0;
  transition: height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .segment {
    transition: none;
  }
}

.segment-total {
  background: var(--off-white);
}

.segment-thermal {
  background: var(--accent);
  min-height: 4px;
}

.segment-solar,
.segment-launch {
  background: var(--chart-muted);
}

.segment-rest {
  background: var(--chart-muted);
}

.bar-legend {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 12rem;
}

.legend-row {
  display: none;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--off-white);
}

.legend-swatch {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  flex-shrink: 0;
}

.legend-thermal .legend-swatch {
  background: var(--accent);
}

.legend-solar .legend-swatch,
.legend-launch .legend-swatch,
.legend-rest .legend-swatch {
  background: var(--chart-muted);
}

.improving-tag {
  display: inline-block;
  margin-left: 0.5em;
  font-size: var(--text-xs);
  font-style: normal;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
}

.thermal-annotation {
  display: none;
  max-width: 12rem;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  color: var(--accent);
}

/* state 1: single undifferentiated total */
[data-state="1"] .segment-total {
  display: block;
}

/* state 2: three labelled segments */
[data-state="2"] .segment-thermal,
[data-state="2"] .segment-solar,
[data-state="2"] .segment-launch {
  display: block;
}

[data-state="2"] .legend-thermal,
[data-state="2"] .legend-solar,
[data-state="2"] .legend-launch {
  display: flex;
}

/* state 3: thermal holds colour, rest desaturates, annotation appears */
[data-state="3"] .segment-thermal,
[data-state="3"] .segment-solar,
[data-state="3"] .segment-launch {
  display: block;
}

[data-state="3"] .segment-solar,
[data-state="3"] .segment-launch {
  opacity: 0.3;
  filter: grayscale(1);
}

[data-state="3"] .legend-solar,
[data-state="3"] .legend-launch {
  display: flex;
}

[data-state="3"] .legend-solar .legend-swatch,
[data-state="3"] .legend-launch .legend-swatch {
  opacity: 0.5;
}

[data-state="3"] .thermal-annotation {
  display: block;
}

/* state 4: thermal vs everything else, driven by the slider */
[data-state="4"] .segment-thermal,
[data-state="4"] .segment-rest {
  display: block;
}

[data-state="4"] .legend-thermal,
[data-state="4"] .legend-rest {
  display: flex;
}

/* state 5: pluvio breakdown, thermal collapses */
[data-state="5"] .segment-thermal,
[data-state="5"] .segment-solar,
[data-state="5"] .segment-launch {
  display: block;
}

[data-state="5"] .legend-thermal,
[data-state="5"] .legend-solar,
[data-state="5"] .legend-launch {
  display: flex;
}

.state4-controls {
  display: none;
  width: 100%;
  max-width: 22rem;
  margin-top: var(--space-4);
}

[data-state="4"] .state4-controls {
  display: block;
}

.thermal-share-slider {
  width: 100%;
  accent-color: var(--accent);
}

.state4-range-labels {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--dim);
  margin-top: var(--space-1);
}

.state4-readout {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-6);
  font-size: var(--text-base);
}

.state4-readout div {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.state4-readout span:first-child {
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: var(--space-2);
}

.state4-readout span:last-child {
  font-family: var(--font-mono);
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 860px) {
  .pin-wrap {
    display: block;
  }

  .pin-visual-col {
    display: none;
  }

  .beats-col {
    display: block;
  }

  .beat-visual-mobile {
    display: flex;
    justify-content: center;
    margin: var(--space-8) 0 var(--space-12);
  }

  .bar-chart {
    flex-direction: column;
    gap: var(--space-12);
  }

  .bar-track {
    width: 100px;
    height: 260px;
  }

  .bar-legend {
    align-items: center;
    text-align: center;
  }

  .legend-row {
    justify-content: center;
  }
}

@media (max-width: 600px) {
  .beat {
    padding: var(--space-12) 0;
  }
}