/* The public stats page (/stats): headline tiles, hours per day as columns, who's building each day (the growth
   model: stacked columns, lines, a projection), and the funnel, tools and streaks as bar tables. One series
   nearly everywhere, so one colour (the brand green); the growth charts add up to four more, in a fixed order
   that stays apart with colour blindness. Text stays in text colours. */
@layer sections {
  .stats {
    --stats-mark: var(--green);
    --stats-track: var(--grey-75);
    --series-1: var(--green);
    --series-2: #2a78d6;
    --series-3: #eb6834;
    --series-4: #4a3aa7;
    --series-5: #eda100;
    --ink: var(--grey-900);

    position: relative;
    max-inline-size: 1000px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 24px 16px 48px;
  }

  .stats__heading {
    margin: 0 0 12px;
    font: 600 15px var(--font-cell);
    color: var(--text-primary);
  }

  .stats__card {
    padding: 16px;
    border: 1px solid var(--border-header);
    background: var(--surface-grid);
  }

  .stats__tiles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1px;
    border: 1px solid var(--border-header);
    background: var(--border-grid);
  }

  .stats__tiles--small {
    margin-block-end: 16px;
    grid-template-columns: repeat(3, 1fr);
  }

  .stats__tile {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px;
    background: var(--surface-grid);
    font: 13px var(--font-cell);
    color: var(--text-secondary);

    strong {
      font: 600 28px var(--font-cell);
      color: var(--text-primary);
    }
  }

  .stats__tiles--small strong {
    font-size: 20px;
  }

  /* Hours per day: one column per day, growing from the baseline, on three hairline gridlines. */
  .stats__columns {
    position: relative;
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(0, 1fr);
    align-items: end;
    gap: 2px;
    block-size: 220px;
    padding-inline-start: 36px;
    padding-block-start: 12px;
  }

  /* Three hairline gridlines (top, middle, zero), their values in the gutter. */
  .stats__grid {
    position: absolute;
    inset: 12px 0 20px 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    pointer-events: none;

    span {
      position: relative;
      block-size: 0;
      font: 11px var(--font-mono);
      font-variant-numeric: tabular-nums;
      line-height: 0;
      color: var(--text-placeholder);
    }

    span::after {
      content: "";
      position: absolute;
      inset-inline: 36px 0;
      inset-block-start: 0;
      border-block-start: 1px solid var(--border-grid);
    }
  }

  .stats__column {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    block-size: 100%;
    padding-block-end: 20px;
    outline-offset: 2px;
    cursor: default;
  }

  .stats__column-bar {
    position: relative;
    inline-size: 100%;
    max-inline-size: 24px;
    block-size: calc(var(--value) / var(--axis-max) * 100%);
    min-block-size: 2px;
    border-radius: 4px 4px 0 0;
    background: var(--stats-mark);
  }

  .stats__column:hover .stats__column-bar,
  .stats__column:focus-visible .stats__column-bar {
    filter: brightness(1.15);
  }

  .stats__column[data-future] .stats__column-bar {
    background: transparent;
  }

  .stats__column-label {
    position: absolute;
    inset-block-end: calc(100% + 4px);
    inset-inline: -20px;
    font: 600 12px var(--font-cell);
    color: var(--text-primary);
    text-align: center;
  }

  .stats__column-date {
    position: absolute;
    inset-block-end: 0;
    font: 11px var(--font-mono);
    color: var(--text-secondary);
  }

  .stats__column[data-future] .stats__column-date {
    color: var(--text-placeholder);
  }

  .stats__axis-note {
    margin: 6px 0 0 36px;
    font: 12px var(--font-cell);
    color: var(--text-placeholder);
  }

  .stats__table-view {
    margin-block-start: 12px;
    font: 13px var(--font-cell);

    summary {
      cursor: pointer;
      color: var(--text-secondary);
    }

    table {
      margin-block-start: 8px;
      max-inline-size: 420px;
    }
  }

  /* Bar tables: label, a bar from the start, its value, and (for the funnel) its share. */
  .stats__bars {
    inline-size: 100%;
    border-collapse: collapse;
    font: 13px var(--font-cell);

    thead th {
      padding-block-end: 6px;
      font: 12px var(--font-cell);
      color: var(--text-secondary);
      text-align: start;
    }

    tbody th {
      inline-size: 1%;
      padding: 5px 12px 5px 0;
      font-weight: 400;
      color: var(--text-primary);
      text-align: start;
      white-space: nowrap;
    }
  }

  .stats__bar-cell {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-block: 5px;
  }

  .stats__bar {
    flex: 0 0 auto;
    inline-size: calc(var(--share) * (100% - 3.5em));
    min-inline-size: 2px;
    block-size: 18px;
    border-radius: 0 4px 4px 0;
    background: var(--stats-mark);
  }

  .stats__bar-value {
    font: 600 13px var(--font-cell);
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
  }

  .stats__bar-share {
    inline-size: 4em;
    padding-inline-start: 8px;
    font: 12px var(--font-mono);
    font-variant-numeric: tabular-nums;
    color: var(--text-secondary);
    text-align: end;
  }

  .stats__pair {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
  }

  .stats__tooltip {
    position: absolute;
    z-index: 2;
    padding: 6px 10px;
    border-radius: 4px;
    background: var(--grey-900);
    font: 12px var(--font-cell);
    color: var(--white);
    white-space: nowrap;
    pointer-events: none;
  }

  @media (width <= 600px) {
    .stats__bars tbody th {
      inline-size: 40%;
      white-space: normal;
    }
  }

  /* Who's building each day. */
  .stats__subheading {
    margin: 20px 0 4px;
    font: 600 14px var(--font-cell);
    color: var(--text-primary);
  }

  .stats__subheading + .leaderboard__note {
    margin-block-start: 0;
  }

  .stats__tiles--row {
    margin-block: 12px 0;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .stats__tile abbr {
    text-decoration: none;
    color: var(--text-placeholder);
  }

  /* A column stacked by state: segments from the baseline up, a 2px gap of the surface between them, the top
     one rounded. Today's is faded: it's still filling in. */
  .stats__stack {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 2px;
    inline-size: 100%;
    max-inline-size: 24px;
    block-size: 100%;
  }

  .stats__segment {
    flex: 0 0 auto;
    block-size: calc(var(--value) / var(--axis-max) * 100%);
    min-block-size: 2px;
    background: var(--series);
  }

  .stats__stack .stats__column-label + .stats__segment,
  .stats__stack .stats__segment:first-child {
    border-radius: 4px 4px 0 0;
  }

  .stats__column:hover .stats__segment,
  .stats__column:focus-visible .stats__segment {
    filter: brightness(1.15);
  }

  .stats__column[data-so-far] .stats__segment {
    opacity: 0.45;
  }

  .stats__column[data-future] .stats__stack {
    visibility: hidden;
  }

  .stats__stack .stats__column-label {
    position: static;
    margin-block-end: 4px;
  }

  /* Line charts: the same slots and gridlines as the columns, the lines as one stretched SVG, the ends labelled,
     and an invisible column per day for the tooltip (with a hairline where you are). */
  .stats__lines {
    position: relative;
    block-size: 220px;
    padding-inline-start: 36px;
    padding-block: 12px 20px;
  }

  .stats__lines-svg,
  .stats__lines-ends {
    position: absolute;
    inset: 12px 0 20px 36px;
    inline-size: calc(100% - 36px);
    block-size: calc(100% - 32px);
    overflow: visible;
    pointer-events: none;
  }

  .stats__line {
    fill: none;
    stroke: var(--series);
    stroke-width: 2;
    stroke-linejoin: round;
    stroke-linecap: round;
    vector-effect: non-scaling-stroke;
  }

  .stats__line-end {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 6px;
    translate: -4px -50%;
    font: 600 11px var(--font-cell);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    color: var(--text-primary);

    i {
      flex: 0 0 auto;
      inline-size: 8px;
      block-size: 8px;
      border-radius: 50%;
      background: var(--series);
      box-shadow: 0 0 0 2px var(--surface-grid);
    }
  }

  .stats__line-end--flip {
    flex-direction: row-reverse;
    translate: calc(-100% + 4px) -50%;
  }

  .stats__hits {
    position: absolute;
    inset: 12px 0 0 36px;
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .stats__hit {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    cursor: default;
    outline-offset: -2px;
  }

  .stats__hit::before {
    content: "";
    position: absolute;
    inset-block: 0 20px;
    inset-inline-start: 50%;
    border-inline-start: 1px solid var(--border-header);
    opacity: 0;
  }

  .stats__hit:hover::before,
  .stats__hit:focus-visible::before {
    opacity: 1;
  }

  .stats__hit .stats__column-date {
    position: static;
  }

  .stats__legend {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 16px;
    margin: 8px 0 0 36px;
    padding: 0;
    list-style: none;
    font: 12px var(--font-cell);
    color: var(--text-secondary);

    li {
      display: flex;
      align-items: center;
      gap: 6px;
    }
  }

  .stats__legend-key {
    inline-size: 14px;
    block-size: 0;
    border-block-start: 2px solid var(--series);
  }

  .stats__legend-key--dashed {
    border-block-start-style: dashed;
  }

  .stats__legend-key--fill {
    inline-size: 10px;
    block-size: 10px;
    border: 0;
    border-radius: 2px;
    background: var(--series);
  }

  .stats__panels {
    margin-block-start: 8px;
  }

  .stats__panel-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px 16px;
  }

  .stats__toggle {
    display: inline-flex;
    border: 1px solid var(--border-header);
    border-radius: 4px;
    font: 12px var(--font-cell);
  }

  .stats__toggle-option {
    padding: 4px 10px;
    color: var(--text-secondary);
    text-decoration: none;

    &:hover { background: var(--hover-chrome); }
  }

  .stats__toggle-option--active {
    background: var(--selection-header-bg);
    color: var(--selection-header-fg);
    font-weight: 600;
  }

  .stats__levers {
    margin-block-start: 8px;
    max-inline-size: 640px;
  }

  .stats__definitions {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 4px 12px;
    margin: 8px 0 0;

    dt { font-weight: 600; color: var(--text-primary); }
    dd { margin: 0; color: var(--text-secondary); }
  }
}