.activity-section {
  margin-top: 10px;
}

.activity-panel {
  --activity-accent: var(--green);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.activity-visualization {
  padding: 20px 24px 22px;
}

.activity-chart-heading {
  align-items: baseline;
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-bottom: 16px;
}

.activity-chart-heading h2 {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 620;
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin: 0;
}

.activity-view-tabs {
  align-items: center;
  display: flex;
  gap: clamp(14px, 2vw, 24px);
  margin-left: auto;
}

.activity-view-tab {
  background: transparent;
  border: 0;
  color: color-mix(in oklab, var(--muted) 72%, var(--panel));
  cursor: pointer;
  font: inherit;
  font-size: clamp(0.86rem, 1.65vw, 1.12rem);
  font-weight: 430;
  line-height: 1.1;
  padding: 2px 0;
}

.activity-view-tab[aria-selected="true"] {
  color: var(--text);
  font-weight: 520;
}

.activity-view-tab:hover {
  color: var(--text);
}

.activity-view-tab:focus-visible {
  outline: 3px solid rgba(45, 118, 87, 0.35);
  outline-offset: 4px;
}

.activity-hover-readout {
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  font-size: clamp(0.78rem, 1.55vw, 1rem);
  line-height: 1.2;
  margin: -7px 0;
  padding: 8px 12px;
  white-space: nowrap;
}

.activity-hover-readout[hidden] {
  display: none;
}

.activity-chart-heading[data-reading="true"] .activity-view-tabs {
  display: none;
}

.activity-heatmap {
  aspect-ratio: 52 / 7;
  display: grid;
  gap: clamp(3px, 0.45vw, 5px);
  grid-auto-flow: column;
  grid-template-columns: repeat(52, minmax(0, 1fr));
  grid-template-rows: repeat(7, minmax(0, 1fr));
  width: 100%;
}

.activity-cell {
  background: color-mix(in oklab, var(--line) 62%, var(--panel));
  border: 0;
  border-radius: 4px;
  display: block;
  height: 100%;
  min-width: 0;
  position: relative;
  transition: background-color 140ms ease, box-shadow 140ms ease;
  width: 100%;
}

.activity-cell[data-level="1"] {
  background: color-mix(in oklab, var(--activity-accent) 24%, var(--panel));
}

.activity-cell[data-level="2"] {
  background: color-mix(in oklab, var(--activity-accent) 44%, var(--panel));
}

.activity-cell[data-level="3"] {
  background: color-mix(in oklab, var(--activity-accent) 68%, var(--panel));
}

.activity-cell[data-level="4"] {
  background: var(--activity-accent);
}

.activity-cell[data-highlighted="true"] {
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--activity-accent) 78%, var(--panel));
}

.activity-months {
  color: var(--muted);
  display: grid;
  font-size: 0.72rem;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  line-height: 1;
  margin-top: 14px;
}

.activity-months span {
  text-align: left;
}

.activity-months span:last-child {
  text-align: right;
}

.activity-metrics {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
}

.activity-metric {
  min-width: 0;
  padding: 20px 18px 18px;
  position: relative;
  text-align: center;
}

.activity-metric + .activity-metric::before {
  background: var(--line);
  content: "";
  height: 52px;
  left: 0;
  position: absolute;
  top: 22px;
  width: 1px;
}

.activity-metric dd,
.activity-metric dt {
  margin: 0;
}

.activity-metric dd {
  color: var(--text);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 760;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.activity-metric dt {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.25;
  margin-top: 7px;
}

@media (max-width: 760px) {
  .activity-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .activity-metric:nth-child(3) {
    border-top: 1px solid var(--line);
  }

  .activity-metric:nth-child(3)::before {
    display: none;
  }

  .activity-metric:nth-child(4) {
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 560px) {
  .activity-panel {
    border-radius: 14px;
  }

  .activity-visualization {
    padding-left: 16px;
    padding-right: 16px;
  }

  .activity-chart-heading {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 10px;
  }

  .activity-view-tabs {
    justify-content: flex-end;
    margin-left: 0;
    width: 100%;
  }

  .activity-view-tab {
    font-size: 0.82rem;
  }

  .activity-hover-readout {
    font-size: 0.74rem;
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
  }

  .activity-months {
    font-size: 0.56rem;
    margin-top: 10px;
  }
}

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