:root {
  --writing-heatmap-cell: 12px;
  --writing-heatmap-gap: 5px;
  --writing-heatmap-level-0: rgba(255, 255, 255, 0.055);
  --writing-heatmap-level-1: rgba(115, 192, 182, 0.26);
  --writing-heatmap-level-2: rgba(115, 192, 182, 0.48);
  --writing-heatmap-level-3: rgba(215, 180, 106, 0.68);
  --writing-heatmap-level-4: rgba(228, 111, 85, 0.86);
}

html[data-theme="light"] {
  --writing-heatmap-level-0: rgba(29, 37, 48, 0.08);
  --writing-heatmap-level-1: rgba(58, 145, 136, 0.22);
  --writing-heatmap-level-2: rgba(58, 145, 136, 0.44);
  --writing-heatmap-level-3: rgba(169, 111, 31, 0.58);
  --writing-heatmap-level-4: rgba(198, 93, 69, 0.78);
}

.writing-heatmap {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.025)),
    rgba(21, 24, 33, 0.82);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
}

html[data-theme="light"] .writing-heatmap {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(255, 250, 240, 0.48)),
    rgba(255, 250, 240, 0.82);
}

.writing-heatmap-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.writing-heatmap-summary {
  margin: 0;
  color: var(--muted-strong);
  font-size: 0.92rem;
  font-weight: 800;
}

.writing-heatmap-legend {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
}

.writing-heatmap-legend-swatches {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.writing-heatmap-swatch {
  width: var(--writing-heatmap-cell);
  height: var(--writing-heatmap-cell);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  background: var(--writing-heatmap-level-0);
}

html[data-theme="light"] .writing-heatmap-swatch,
html[data-theme="light"] .writing-heatmap-cell {
  border-color: rgba(29, 37, 48, 0.12);
}

.writing-heatmap-chart {
  max-width: 100%;
  margin-top: 18px;
  padding-bottom: 8px;
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
}

.writing-heatmap-chart::-webkit-scrollbar {
  height: 10px;
}

.writing-heatmap-chart::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
}

html[data-theme="light"] .writing-heatmap-chart::-webkit-scrollbar-thumb {
  background: rgba(29, 37, 48, 0.18);
}

.writing-heatmap-chart::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
}

html[data-theme="light"] .writing-heatmap-chart::-webkit-scrollbar-track {
  background: rgba(29, 37, 48, 0.06);
}

.writing-heatmap-graph {
  display: inline-grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto 1fr;
  grid-template-areas:
    ". months"
    "days grid";
  column-gap: 12px;
  row-gap: 8px;
  align-items: start;
  min-width: max-content;
}

.writing-heatmap-months {
  grid-area: months;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: var(--writing-heatmap-cell);
  column-gap: var(--writing-heatmap-gap);
  min-width: max-content;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
}

.writing-heatmap-month {
  line-height: 1;
  white-space: nowrap;
}

.writing-heatmap-days {
  grid-area: days;
  display: grid;
  grid-template-rows: repeat(7, var(--writing-heatmap-cell));
  row-gap: var(--writing-heatmap-gap);
  align-content: start;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
}

.writing-heatmap-weekday {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-height: var(--writing-heatmap-cell);
  line-height: 1;
}

.writing-heatmap-grid {
  grid-area: grid;
  display: grid;
  grid-template-rows: repeat(7, var(--writing-heatmap-cell));
  grid-auto-flow: column;
  grid-auto-columns: var(--writing-heatmap-cell);
  gap: var(--writing-heatmap-gap);
  min-width: max-content;
  align-content: start;
}

.writing-heatmap-cell {
  width: var(--writing-heatmap-cell);
  height: var(--writing-heatmap-cell);
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
  background: var(--writing-heatmap-level-0);
  cursor: pointer;
}

.writing-heatmap-cell:hover {
  border-color: rgba(255, 248, 235, 0.58);
}

.writing-heatmap-cell:focus-visible {
  box-shadow: 0 0 0 4px rgba(215, 180, 106, 0.14);
}

.writing-heatmap-cell.is-outside-range {
  border-color: transparent;
  background: transparent;
  cursor: default;
  opacity: 0;
}

.writing-heatmap-level-0 {
  background: var(--writing-heatmap-level-0);
}

.writing-heatmap-level-1 {
  background: var(--writing-heatmap-level-1);
}

.writing-heatmap-level-2 {
  background: var(--writing-heatmap-level-2);
}

.writing-heatmap-level-3 {
  background: var(--writing-heatmap-level-3);
}

.writing-heatmap-level-4 {
  background: var(--writing-heatmap-level-4);
}

.writing-heatmap-tooltip {
  position: fixed;
  z-index: 90;
  max-width: min(380px, calc(100vw - 24px));
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  background: rgba(12, 14, 18, 0.94);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.34);
  color: var(--ink-strong);
  font-size: 0.86rem;
  font-weight: 800;
  line-height: 1.45;
  pointer-events: none;
}

html[data-theme="light"] .writing-heatmap-tooltip {
  border-color: rgba(29, 37, 48, 0.14);
  background: rgba(255, 250, 240, 0.96);
  box-shadow: 0 18px 44px rgba(92, 74, 47, 0.18);
}

@media (max-width: 720px) {
  :root {
    --writing-heatmap-cell: 11px;
    --writing-heatmap-gap: 4px;
  }

  .writing-heatmap {
    padding: 16px;
  }
}