.seller-activity-section {
  display: grid;
  gap: 16px;
  margin-top: 6px;
}

.seller-activity-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding: 4px 2px 0;
}

.seller-activity-head h2,
.seller-activity-head p {
  margin: 0;
}

.seller-activity-head h2 {
  margin-top: 4px;
  color: var(--ink);
  font-size: clamp(21px, 2vw, 29px);
  font-weight: 600;
  letter-spacing: -0.035em;
}

.seller-activity-head > div:first-child > p:last-child {
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
}

.seller-activity-controls,
.seller-activity-filter {
  display: flex;
  align-items: center;
  gap: 6px;
}

.seller-activity-filter {
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 253, 248, 0.82);
}

.seller-activity-filter button,
.seller-activity-refresh {
  min-height: 32px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 10px;
  font-weight: 600;
  cursor: pointer;
}

.seller-activity-filter button {
  padding: 0 11px;
}

.seller-activity-filter button:hover,
.seller-activity-filter button.active {
  background: var(--ink);
  color: #fff;
}

.seller-activity-refresh {
  width: 40px;
  border: 1px solid var(--line);
  background: var(--marketing-paper, #fffdf8);
  color: var(--ink);
  font-size: 17px;
}

.seller-activity-refresh:hover {
  border-color: #bcb3a5;
  background: #fff;
}

.seller-activity-kpis {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.seller-activity-kpi {
  min-width: 0;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--marketing-paper, #fffdf8);
  box-shadow: 0 7px 24px rgba(26, 22, 16, 0.03);
}

.seller-activity-kpi span,
.seller-activity-kpi strong,
.seller-activity-kpi small {
  display: block;
}

.seller-activity-kpi span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.seller-activity-kpi strong {
  margin-top: 8px;
  color: var(--ink);
  font-size: clamp(24px, 2.4vw, 34px);
  font-weight: 600;
  letter-spacing: -0.045em;
}

.seller-activity-kpi small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 9px;
}

.seller-activity-card {
  min-width: 0;
  padding: 17px 18px 14px;
}

.seller-activity-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.seller-activity-card-head strong,
.seller-activity-card-head span {
  display: block;
}

.seller-activity-card-head strong {
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}

.seller-activity-card-head > div > span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 10px;
}

.seller-activity-current {
  flex: 0 0 auto;
  padding: 5px 8px;
  border-radius: 999px;
  background: #f0ebe2;
  color: var(--muted);
  font-size: 9px;
  font-weight: 600;
}

.seller-activity-chart-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 5px;
  scrollbar-color: #c9c1b4 transparent;
  scrollbar-width: thin;
}

.seller-activity-chart {
  min-width: var(--seller-chart-min-width);
  height: 270px;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 10px;
}

.seller-activity-y-axis {
  height: 226px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 1px;
  color: var(--muted);
  font-size: 9px;
  text-align: right;
}

.seller-activity-plot {
  position: relative;
  min-width: 0;
  height: 270px;
}

.seller-activity-grid {
  position: absolute;
  inset: 0 0 44px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}

.seller-activity-grid i {
  width: 100%;
  height: 1px;
  background: rgba(73, 66, 56, 0.11);
}

.seller-activity-bars {
  position: absolute;
  inset: 0 0 0;
  display: flex;
  align-items: stretch;
  gap: 5px;
}

.seller-activity-bar-cell {
  min-width: 0;
  flex: 1 1 0;
  display: grid;
  grid-template-rows: 226px 36px;
  gap: 7px;
  align-items: end;
}

.seller-activity-bar-cell.wau {
  min-width: 13px;
}

.seller-activity-bar-cell.mau {
  min-width: 28px;
}

.seller-activity-bar-cell.dau {
  min-width: 6px;
}

.seller-activity-bar {
  position: relative;
  width: 100%;
  height: 226px;
  align-self: end;
  display: flex;
  align-items: flex-end;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.seller-activity-bar > span {
  width: 100%;
  height: var(--seller-bar-height);
  min-height: 0;
  display: block;
  border-radius: 3px 3px 1px 1px;
  background: #4c587f;
  box-shadow: inset 0 0 0 1px rgba(30, 38, 69, 0.08);
  transition:
    height 180ms ease,
    filter 120ms ease,
    transform 120ms ease;
}

.seller-activity-bar:hover > span,
.seller-activity-bar:focus-visible > span {
  filter: brightness(1.12);
  transform: translateY(-2px);
}

.seller-activity-bar:focus-visible {
  outline: 2px solid var(--coral, #ef6b4d);
  outline-offset: 2px;
}

.seller-activity-bar-cell small {
  min-width: 0;
  overflow: hidden;
  color: var(--muted);
  font-size: 8px;
  line-height: 1.15;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.seller-activity-bar-cell small.muted-label {
  visibility: hidden;
}

.seller-activity-footnote {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 0 3px;
  color: var(--muted);
  font-size: 9px;
  line-height: 1.45;
}

.seller-activity-footnote.warning {
  color: #8d5a15;
}

.seller-activity-loading {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.seller-activity-loading strong,
.seller-activity-loading span {
  display: block;
}

.seller-activity-loading strong {
  font-size: 12px;
  font-weight: 600;
}

.seller-activity-loading span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
}

.seller-activity-tooltip {
  position: fixed;
  z-index: 9999;
  max-width: min(360px, calc(100vw - 24px));
  padding: 9px 11px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 9px;
  background: rgba(18, 18, 16, 0.96);
  box-shadow: 0 12px 34px rgba(17, 15, 12, 0.22);
  color: #fff;
  font-size: 10px;
  line-height: 1.4;
  pointer-events: none;
}

@media (max-width: 900px) {
  .seller-activity-kpis {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .seller-activity-head {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .seller-activity-controls {
    width: 100%;
  }

  .seller-activity-filter {
    flex: 1 1 auto;
  }

  .seller-activity-filter button {
    flex: 1 1 0;
  }

  .seller-activity-kpis {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .seller-activity-kpi {
    padding: 12px;
  }

  .seller-activity-card {
    padding-inline: 12px;
  }

  .seller-activity-footnote {
    flex-direction: column;
    gap: 5px;
  }
}