/* Overview: GitHub contribution heatmap (loaded from index only) */
.impact-github-section {
  background: transparent;
  border: none;
  padding: 0;
  margin-bottom: 8px;
}

.impact-github-block {
  padding: 0;
}

.impact-github-heading {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.impact-github-heading .bi {
  margin-right: 8px;
  vertical-align: -0.06em;
  opacity: 0.95;
}

.impact-inline-stats {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  margin-bottom: 14px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
}

.impact-inline-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 0 16px;
  min-width: 0;
  text-align: center;
}

.impact-inline-stat:not(:first-child) {
  border-left: 1px solid var(--border);
}

.impact-inline-stat__val {
  font-size: 1.05rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--text-primary);
  line-height: 1.2;
}

.impact-inline-stat__lbl {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  line-height: 1.25;
  max-width: 8.5rem;
}

@media (max-width: 575px) {
  .impact-inline-stats {
    flex-direction: column;
    align-items: stretch;
  }

  .impact-inline-stat {
    flex-direction: row;
    justify-content: space-between;
    align-items: baseline;
    padding: 6px 0;
    text-align: left;
  }

  .impact-inline-stat:not(:first-child) {
    border-left: none;
    border-top: 1px solid var(--border);
  }

  .impact-inline-stat__lbl {
    max-width: none;
    text-align: right;
  }
}

.impact-heatmap-shell {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 28px;
  align-items: flex-start;
  justify-content: space-between;
}

.impact-heatmap-main {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px 14px;
  background: var(--bg);
}

.impact-heatmap-body {
  display: flex;
  gap: 6px;
  align-items: stretch;
}

.impact-dow {
  display: grid;
  grid-template-rows: repeat(7, 11px);
  row-gap: 3px;
  align-items: center;
  justify-items: start;
  font-size: 9px;
  color: var(--text-tertiary);
  width: 26px;
  flex-shrink: 0;
  line-height: 1;
  padding-top: 0;
}

.impact-heatmap-cols {
  flex: 1;
  min-width: 0;
}

.impact-months-row {
  display: grid;
  column-gap: 3px;
  margin-bottom: 6px;
  min-height: 14px;
}

.impact-month-label {
  font-size: 9px;
  color: var(--text-tertiary);
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
}

.impact-month-label--span {
  text-align: left;
  overflow: visible;
  text-overflow: unset;
  white-space: nowrap;
  padding-left: 1px;
}

.impact-grid-wrap {
  overflow-x: auto;
  padding-bottom: 2px;
}

.impact-grid {
  display: grid;
  grid-auto-flow: column;
  grid-template-rows: repeat(7, 11px);
  grid-auto-columns: 11px;
  gap: 3px;
  width: max-content;
}

.impact-cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  box-sizing: border-box;
}

.impact-cell--empty,
.impact-cell--l0 {
  background: #161b22;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.impact-cell--l1 {
  background: #0e4429;
}

.impact-cell--l2 {
  background: #006d32;
}

.impact-cell--l3 {
  background: #26a641;
}

.impact-cell--l4 {
  background: #39d353;
}

.impact-heatmap-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.impact-legend-cells {
  display: inline-flex;
  gap: 3px;
  align-items: center;
}

.impact-heatmap-legend .impact-cell {
  flex-shrink: 0;
}

.impact-year-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

.impact-year-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: 6px;
  text-align: left;
  font-weight: 500;
  font-family: var(--font-sans);
}

.impact-year-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}

.impact-year-btn.is-active {
  background: #0969da;
  color: #fff;
}

.impact-year-btn.is-active:hover {
  background: #0860ca;
  color: #fff;
}

.impact-activity-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.impact-activity-month {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.impact-activity-rule {
  height: 1px;
  background: var(--border-muted);
  margin-top: 8px;
  border: 0;
}

@media (max-width: 576px) {
  .impact-year-nav {
    flex-direction: row;
    flex-wrap: wrap;
    width: 100%;
    justify-content: center;
  }

  .impact-year-btn {
    text-align: center;
  }
}