:root {
  --bg: #fafaf8;
  --panel: #ffffff;
  --ink: #1a1a1a;
  --muted: #888888;
  --line: #e8e8e8;
  --std-bg: #f6f6f4;
}

* { box-sizing: border-box; font-family: Helvetica, "Helvetica Neue", Arial, sans-serif; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-size: 12px;
  line-height: 1.3;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px 8px;
  border-bottom: 1px solid var(--line);
  background: #e4e1d8;
  height: 46px;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.topbar h1 {
  font-family: "Parisienne", "Snell Roundhand", "Apple Chancery", "Edwardian Script ITC", "Lucida Calligraphy", "Brush Script MT", cursive;
  font-size: 30px;
  font-weight: 400;
  margin: 0;
  letter-spacing: 0;
  line-height: 1;
}
.topbar h1 em {
  font-family: inherit;
  font-style: normal;
}
.topbar .subtle { font-weight: 400; color: var(--muted); }
.paper-link {
  font-family: Helvetica, "Helvetica Neue", Arial, sans-serif;
  font-size: 12px;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.paper-link:hover { color: var(--muted); }

.topbar-left {
  display: flex;
  align-items: center;
  gap: 48px;
}
.how-to {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  outline: none;
  cursor: help;
}
.how-to-label {
  font-family: Helvetica, "Helvetica Neue", Arial, sans-serif;
  font-size: 12px;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.how-to:hover .how-to-label,
.how-to:focus-within .how-to-label {
  color: var(--muted);
}
.paper-link.no-underline {
  border-bottom: none;
  padding-bottom: 0;
}
.how-to-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid var(--ink);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-style: italic;
  font-size: 9px;
  line-height: 1;
  padding-bottom: 1px;
  cursor: help;
  user-select: none;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.how-to:hover .how-to-trigger,
.how-to:focus-within .how-to-trigger {
  background: var(--ink);
  color: #fff;
}
.how-to-popup {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 320px;
  background: #ffffff;
  color: var(--ink);
  border: 1px solid var(--line);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  padding: 12px 14px;
  font-size: 12px;
  line-height: 1.45;
  letter-spacing: 0.01em;
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
  text-align: left;
  pointer-events: none;
}
.how-to-popup b {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
}
.how-to-popup .how-to-body {
  display: block;
  color: #333;
}
.how-to-popup kbd {
  font-family: inherit;
  background: #f1efe9;
  border: 1px solid #d8d4c8;
  border-radius: 3px;
  padding: 0 4px;
  font-size: 11px;
}
.how-to:hover .how-to-popup,
.how-to:focus-within .how-to-popup {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.filter-pill {
  font-family: Helvetica, "Helvetica Neue", Arial, sans-serif;
  font-size: 12px;
  background: var(--ink);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 3px 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.02em;
}
.filter-pill:hover { background: #444; }
.filter-pill .filter-pill-x { font-size: 13px; line-height: 1; opacity: 0.7; }
.filter-pill.hidden { display: none; }

.mosaic img.hidden { opacity: 0.05; cursor: default; }
.year-display {
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--muted);
}
.year-display #year-value {
  color: var(--ink);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.grid {
  display: grid;
  grid-template-columns: 34% minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr) 26%;
  grid-template-areas:
    "body mosaic"
    "cats cats";
  gap: 6px;
  padding: 6px 10px;
  aspect-ratio: 16 / 9;
  width: min(100%, calc((100vh - 88px) * 16 / 9));
  max-height: calc(100vh - 88px);
  margin: 0 auto;
}
.col-body    { grid-area: body; }
.col-mosaic  { grid-area: mosaic; }
.col-cats    {
  grid-area: cats;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  min-height: 0;
  background: #fff;
  border: 1px solid var(--line);
}

.panel {
  background: #fff;
  border: 1px solid var(--line);
  padding: 4px 6px 4px;
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}
.panel h2 {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.panel h2 .subtle {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--muted);
  font-size: 12px;
}
.panel h2 .mosaic-year {
  margin-left: 6px;
  color: var(--muted);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

/* Body measurements: row label + 3 plots (mean | σ | skew) × 5 rows */
.col-body { min-height: 0; }
.meas-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 68px 1fr 1fr 1fr;
  grid-template-rows: repeat(5, 1fr);
  gap: 0;
  min-height: 0;
}
.meas-grid > * { border-bottom: 1px solid var(--line); }
.meas-grid > *:nth-last-child(-n+4) { border-bottom: none; }
.meas-cell { width: 100%; height: 100%; min-height: 0; min-width: 0; }
.meas-row-label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  font-size: 12px;
  color: var(--ink);
  font-weight: 500;
  letter-spacing: 0.01em;
  text-align: center;
  line-height: 1.1;
}
.meas-col-headers {
  display: grid;
  grid-template-columns: 68px 1fr 1fr 1fr;
  font-size: 12px;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: -6px;
  line-height: 1;
  letter-spacing: 0.01em;
}
.meas-col-headers > span {
  text-align: center;
  /* shift right so headers align with the plot area inside each cell
     (panels have MARGIN.left=32, MARGIN.right=4 in plots.js) */
  padding-left: 28px;
}
.meas-col-headers .meas-col-spacer { padding: 0; }

.legend-row {
  margin: 0 0 6px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--ink);
  flex-wrap: nowrap;
  white-space: nowrap;
  overflow: hidden;
  padding: 2px 0;
}
.legend-row span { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.legend-row i {
  display: inline-block;
  width: 10px;
  height: 2px;
  border-radius: 1px;
}

/* Center mosaic 10×10 — square aspect, fits available area, centered horizontally */
.col-mosaic { display: flex; flex-direction: column; min-height: 0; align-items: stretch; }
.mosaic-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}
.mosaic {
  display: grid;
  grid-template-columns: repeat(18, 1fr);
  grid-template-rows: repeat(7, 1fr);
  gap: 1px;
  background: #fff;
  aspect-ratio: 36 / 21;  /* 18 cols × 2 : 7 rows × 3 = 12:7 */
  max-height: 100%;
  max-width: 100%;
}
.mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
  display: block;
  background: #f1f1f1;
  transition: opacity 200ms ease;
}
.mosaic img.swap { opacity: 0; }
.mosaic-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
  padding: 3px 1px 0;
  font-variant-numeric: tabular-nums;
  flex-wrap: wrap;
  gap: 6px;
}
.mosaic-meta strong { color: var(--ink); font-weight: 500; }

.cat-cell {
  width: 100%; height: 100%; min-height: 0; min-width: 0;
  background: #fff; padding: 4px 6px;
  border: none;
}

/* Year ruler — matches the plot grid width (does not grow with viewport) */
.slider-row {
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 0 10px;
  border-top: 1px solid var(--line);
  height: 42px;
  width: min(100%, calc((100vh - 88px) * 16 / 9));
  margin: 0 auto;
}
.timeline {
  position: relative;
  width: 100%;
  height: 100%;
}
.timeline-baseline {
  position: absolute;
  top: 9px;
  left: 0; right: 0;
  height: 1px;
  background: var(--ink);
  pointer-events: none;
  z-index: 1;
}
.timeline-ticks {
  position: absolute;
  top: 9px;
  left: 0; right: 0;
  height: 14px;
  pointer-events: none;
  z-index: 1;
}
.timeline-ticks .tick {
  position: absolute;
  top: 0;
  width: 1px;
  height: 5px;
  background: var(--ink);
  opacity: 0.45;
  transform: translateX(-0.5px);
}
.timeline-ticks .tick.major {
  height: 12px;
  opacity: 1;
}
.timeline-labels {
  position: absolute;
  top: 25px;
  left: 0; right: 0;
  height: 14px;
  pointer-events: none;
  z-index: 1;
}
.timeline-labels .tick-label {
  position: absolute;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
}
/* Native input is invisible — used only for drag/keyboard input + accessibility.
   Safari needs explicit appearance:none on input AND thumb; default thumb is otherwise rendered. */
.timeline input[type="range"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 30px;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background: transparent;
  outline: none;
  border: none;
  margin: 0;
  padding: 0;
  z-index: 3;
  cursor: ew-resize;
  -webkit-tap-highlight-color: transparent;
}
.timeline input[type="range"]::-webkit-slider-runnable-track {
  background: transparent;
  height: 30px;
  border: none;
  -webkit-appearance: none;
}
.timeline input[type="range"]::-moz-range-track {
  background: transparent;
  height: 30px;
  border: none;
}
.timeline input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 2px;
  height: 30px;
  background: transparent;
  border: none;
  box-shadow: none;
}
.timeline input[type="range"]::-moz-range-thumb {
  -moz-appearance: none;
  appearance: none;
  width: 2px;
  height: 30px;
  background: transparent;
  border: none;
  box-shadow: none;
}
.timeline input[type="range"]:focus { outline: none; }
.timeline input[type="range"]:focus::-webkit-slider-thumb { background: transparent; }

/* Custom marker — bubble with year label and drag affordance */
.timeline-marker {
  position: absolute;
  top: 1px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: filter 150ms ease;
}
.timeline-marker-year {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ink);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 4px;
  line-height: 1;
  box-shadow: 0 2px 6px rgba(0,0,0,0.25);
  animation: marker-pulse 2.4s ease-in-out 1.5;
}
.timeline-marker-hint {
  font-size: 11px;
  font-weight: 400;
  opacity: 0.7;
  letter-spacing: 0.02em;
}
.timeline-marker::after {
  content: "";
  display: block;
  width: 1px;
  height: 8px;
  background: var(--ink);
}
.timeline:hover .timeline-marker {
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}
@keyframes marker-pulse {
  0%, 100% { box-shadow: 0 2px 6px rgba(0,0,0,0.25); }
  50%       { box-shadow: 0 2px 14px rgba(0,0,0,0.45), 0 0 0 4px rgba(26,26,26,0.08); }
}

.version-badge {
  position: fixed;
  bottom: 4px;
  right: 6px;
  font-size: 9px;
  color: var(--muted);
  opacity: 0.6;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  pointer-events: none;
  z-index: 1000;
}

.tooltip {
  position: fixed;
  pointer-events: none;
  background: #1a1a1a;
  color: #fff;
  padding: 3px 5px;
  font-size: 11px;
  border-radius: 2px;
  opacity: 0;
  transform: translate(-50%, -110%);
  transition: opacity 100ms;
  z-index: 100;
  white-space: nowrap;
}
.tooltip.show { opacity: 1; }

.mosaic img { cursor: zoom-in; }

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  z-index: 200;
  cursor: zoom-out;
}
.lightbox.show { display: flex; }
.lightbox img {
  max-width: 70vw;
  max-height: 80vh;
  object-fit: contain;
  display: block;
  background: #1a1a1a;
  box-shadow: 0 6px 32px rgba(0, 0, 0, 0.5);
}
.lightbox-caption {
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

/* D3 axis text inherits Helvetica via SVG style */
svg { font-family: Helvetica, "Helvetica Neue", Arial, sans-serif; }