/* A year of writing */
.diary-heat {
  width: min(100% - 2 * var(--pad), 1020px);
  margin: 48px auto 0;
}
.heat-scroll {

  /* Room for today's outline */
  padding: 4px 4px 6px;
  --h0: color-mix(in oklab, var(--rule) 70%, var(--ground));
  --h1: color-mix(in oklab, var(--accent) 22%, var(--soft));
  --h2: color-mix(in oklab, var(--accent) 46%, var(--soft));
  --h3: color-mix(in oklab, var(--accent) 72%, var(--soft));
  --h4: var(--accent);
}
.heat {
  display: grid;
  grid-template-columns: 28px auto;
  width: fit-content;
  max-width: 100%;
  margin-inline: auto;
  gap: 6px 8px;
  color: var(--muted);
  font-size: 12.5px;
  --gap: clamp(2px, .5vw, 4px);
}

/* Skeleton until heatmap.js draws: the finished size and its squares */
.heat:empty {
  position: relative;
  width: min(986px, 100%);
  height: 180px;
}
.heat:empty::before {
  position: absolute;
  top: 24px;
  left: 36px;
  width: calc(100% - 36px);
  height: 122px;
  background: var(--h0);
  content: "";
  -webkit-mask: linear-gradient(90deg, #000 14px, transparent 14px) 0 0 / 18px 18px, linear-gradient(#000 14px, transparent 14px) 0 0 / 18px 18px;
  mask: linear-gradient(90deg, #000 14px, transparent 14px) 0 0 / 18px 18px, linear-gradient(#000 14px, transparent 14px) 0 0 / 18px 18px;
  -webkit-mask-composite: source-in;
  mask-composite: intersect;
}
@media (prefers-reduced-motion: no-preference) {
  .heat:empty::before { animation: heat-pulse 1.1s ease-in-out infinite alternate; }
}
@keyframes heat-pulse {
  to { opacity: .45; }
}

/* Older pages of the diary have no heatmap */
.paged .diary-heat, .date .diary-heat { display: none; }
@media (scripting: none) {
  .diary-heat { display: none; }
}

/* Months, days and squares share one column grid that shrinks to fit */
.heat-months, .heat-grid {
  display: grid;
  grid-template-columns: repeat(var(--weeks), minmax(0, 14px));
  gap: var(--gap);
}
.heat-months {
  grid-column: 2;
  height: 18px;
  white-space: nowrap;
}
.heat-months span { grid-row: 1; }
.heat-days {
  display: grid;
  grid-template-rows: repeat(7, 1fr);
  gap: var(--gap);
}
.heat-days span {
  align-self: center;
  line-height: 1;
}
.heat-grid {
  grid-auto-flow: column;
  grid-template-rows: repeat(7, auto);
}
.heat-day {
  display: block;
  aspect-ratio: 1;
  border-radius: min(3px, 20%);
  background: var(--h0);
}
.heat-day[data-l="1"] { background: var(--h1); }
.heat-day[data-l="2"] { background: var(--h2); }
.heat-day[data-l="3"] { background: var(--h3); }
.heat-day[data-l="4"] { background: var(--h4); }
a.heat-day:hover {
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}
.heat-day.is-today {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}
.heat-legend {
  display: flex;
  grid-column: 2;
  align-items: center;
  justify-content: flex-end;
  margin-top: 8px;
  gap: 6px;
}
.heat-legend i {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
}

/* Black tooltip over a heatmap day, placed by heatmap.js */
.heat-tip {
  position: fixed;
  z-index: 70;
  padding: 6px 10px;
  border-radius: 6px;
  background: #000;
  color: #fff;
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 8px));
  white-space: nowrap;
}
.heat-tip[hidden] { display: none; }