.heatmap-preview {
  min-height: 100vh;
  padding: var(--space-page-desktop);
  color: var(--color-text-primary);
}

.heatmap-preview__shell {
  max-width: 750px;
}

.heatmap-preview__header {
  margin-bottom: var(--space-section-gap);
}

.ds-heatmap-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
  max-width: 420px;
  padding: var(--card-padding);
  background: var(--card-background);
  border: var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
}

.ds-heatmap-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.ds-heatmap-stat-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-8);
}

.ds-heatmap-stat-value {
  font-size: 1.375rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.ds-heatmap-stat-target {
  font-size: var(--type-body-sm-size);
  color: var(--color-text-secondary);
}

.ds-heatmap-panel {
  position: relative;
}

.ds-heatmap-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  grid-template-rows: var(--space-16) repeat(4, var(--heatmap-cell-size));
  row-gap: var(--space-4);
  column-gap: var(--space-4);
  align-items: center;
  position: relative;
}

.ds-heatmap-day-label {
  height: var(--space-16);
  line-height: var(--space-16);
  font-size: var(--type-caption-size);
  font-weight: var(--font-weight-semibold);
  color: var(--heatmap-day-label-color);
  text-align: center;
}

.ds-heatmap-cell {
  position: relative;
  z-index: 1;
  width: 100%;
  height: var(--heatmap-cell-size);
  border-radius: var(--heatmap-cell-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  padding: 0;
}

.ds-heatmap-cell--has-data {
  cursor: pointer;
}

.ds-heatmap-dot {
  width: var(--heatmap-dot-size);
  height: var(--heatmap-dot-size);
  border-radius: var(--radius-full);
  background: var(--heatmap-dot-color);
}

.ds-heatmap-dot--active {
  background: var(--heatmap-dot-color-active);
}

.ds-heatmap-dot--result {
  width: var(--heatmap-dot-size-result);
  height: var(--heatmap-dot-size-result);
  background: var(--heatmap-dot-color-result);
  box-shadow: var(--heatmap-dot-ring-result);
}

.ds-heatmap-dot--today {
  box-shadow: var(--heatmap-dot-ring-today);
}

.ds-heatmap-band {
  position: absolute;
  height: var(--space-16);
  border-radius: var(--radius-full);
  background: var(--heatmap-band-background);
  border: var(--heatmap-band-border);
  pointer-events: none;
  z-index: 0;
}

.ds-heatmap-popover {
  position: absolute;
  right: -8px;
  top: calc(100% + var(--space-8));
  width: var(--heatmap-popover-width);
  z-index: 10;
  background: var(--heatmap-popover-background);
  border: var(--heatmap-popover-border);
  border-radius: var(--heatmap-popover-radius);
  padding: var(--heatmap-popover-padding);
  box-shadow: var(--heatmap-popover-shadow);
  pointer-events: none;
  display: none;
}

.ds-heatmap-popover--visible {
  display: block;
}

.ds-heatmap-popover-hd {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.ds-heatmap-badge {
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-xs);
  padding: 2px var(--space-8);
}

.ds-heatmap-badge--result {
  color: var(--heatmap-badge-result-color);
  background: var(--heatmap-badge-result-background);
}

.ds-heatmap-badge--effort {
  color: var(--heatmap-badge-effort-color);
  background: var(--heatmap-badge-effort-background);
}

.ds-heatmap-popover-date {
  font-size: var(--type-caption-size);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.ds-heatmap-popover-top {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: var(--space-8);
  align-items: start;
}

.ds-heatmap-popover-hours {
  display: grid;
  grid-template-rows: repeat(4, 23px);
  color: var(--color-text-muted);
  font-size: var(--type-caption-size);
  font-family: var(--font-mono);
  align-items: start;
}

.ds-heatmap-popover-schedule {
  position: relative;
  height: 92px;
  border-left: var(--border-subtle);
  background: repeating-linear-gradient(to bottom, transparent 0, transparent 22px, var(--heatmap-hour-track-line) 23px);
  overflow: hidden;
}

.ds-heatmap-popover-block {
  position: absolute;
  left: var(--space-8);
  right: 0;
  min-height: var(--space-32);
  border-radius: var(--radius-sm);
  background: var(--heatmap-schedule-block-background);
  border-left: 3px solid var(--heatmap-schedule-block-border-effort);
  padding: var(--space-4) var(--space-8);
}

.ds-heatmap-popover-block--result {
  border-left-color: var(--heatmap-schedule-block-border-result);
}

.ds-heatmap-popover-block-sub {
  font-size: 9.5px;
  font-weight: var(--font-weight-semibold);
  margin-bottom: 3px;
  color: var(--color-text-muted);
}

.ds-heatmap-popover-block--result .ds-heatmap-popover-block-sub {
  color: var(--heatmap-badge-result-color);
}

.ds-heatmap-popover-value-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  min-width: 0;
}

.ds-heatmap-popover-block-title {
  font-size: var(--type-body-sm-size);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.ds-heatmap-popover-delta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  min-height: var(--space-16);
  padding: 2px var(--space-4);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  color: var(--heatmap-badge-effort-color);
  background: var(--heatmap-delta-background);
}

.ds-heatmap-popover-delta--result {
  color: var(--heatmap-badge-result-color);
  background: var(--heatmap-delta-background-result);
}

.ds-heatmap-popover-note {
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: var(--border-subtle);
  font-size: var(--type-caption-size);
  line-height: 1.45;
  color: var(--color-text-secondary);
}

.ds-heatmap-popover-empty {
  font-size: var(--type-caption-size);
  line-height: 1.45;
  color: var(--color-text-muted);
}

@media (max-width: 640px) {
  .heatmap-preview {
    padding: var(--space-page-mobile);
  }
}