/* ========================================================================== 
   WantToKnow.info Archive Visualization
   Component stylesheet for archive-viz-section.html

   This file intentionally depends on the global design tokens in global.css,
   while providing safe fallbacks for isolated development/testing.
   ========================================================================== */

.archive-viz {
  --viz-surface: var(--color-surface, #ffffff);
  --viz-surface-muted: var(--color-surface-muted, #f5f2fb);
  --viz-text: var(--color-text, #17141f);
  --viz-text-soft: var(--color-text-soft, #484250);
  --viz-text-muted: var(--color-text-muted, #716a79);
  --viz-border: var(--color-border, #ded9e5);
  --viz-border-strong: var(--color-border-strong, #c8c0d2);
  --viz-purple: var(--color-brand-purple, #7658f6);
  --viz-purple-dark: var(--color-brand-purple-dark, #5b3fe0);
  --viz-lavender: var(--color-brand-lavender, #ded6ff);
  --viz-lavender-soft: var(--color-brand-lavender-soft, #f0edff);
  --viz-orange: var(--color-brand-orange, #df5622);
  --viz-yellow: var(--color-brand-yellow, #ffd76a);
  --viz-success: var(--color-success, #137653);
  --viz-font-body: var(--font-family-body, system-ui, sans-serif);
  --viz-font-heading: var(--font-family-heading, "Arial Narrow", sans-serif);
  --viz-fast: var(--motion-duration-fast, 160ms);
  --viz-medium: var(--motion-duration-medium, 260ms);
  --viz-ease: var(--motion-easing-standard, cubic-bezier(0.2, 0.8, 0.2, 1));

  padding-block: clamp(1.2rem, 2vw, 1.8rem);
}

.archive-viz__header {
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
}

.archive-viz__heading-row {
  display: grid;
  gap: 1.5rem;
  align-items: end;
}

.archive-viz__summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  border-top: 0.0625rem solid var(--viz-border-strong);
  border-left: 0.0625rem solid var(--viz-border-strong);
  background: var(--viz-surface);
}

.archive-viz__summary > div {
  min-width: 0;
  padding: 0.85rem 1rem;
  border-right: 0.0625rem solid var(--viz-border-strong);
  border-bottom: 0.0625rem solid var(--viz-border-strong);
}

.archive-viz__summary dt {
  margin-bottom: 0.15rem;
  color: var(--viz-text-muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.archive-viz__summary dd {
  margin: 0;
  color: var(--viz-text);
  font-family: var(--viz-font-heading);
  font-size: clamp(1.6rem, 1.25rem + 1vw, 2.25rem);
  line-height: 1;
  letter-spacing: 0.035em;
}

.archive-viz__panel {
  position: relative;
  border: 0.0625rem solid var(--viz-border-strong);
  background: var(--viz-surface);
  box-shadow: var(--shadow-low, 0 0.5rem 1.5rem rgba(35, 23, 55, 0.09));
}

.archive-viz__view-header {
  display: grid;
  gap: 0.75rem 2rem;
  padding: clamp(1rem, 2vw, 1.5rem);
  border-bottom: 0.0625rem solid var(--viz-border);
}

.archive-viz__view-kicker {
  margin: 0 0 0.25rem;
  color: var(--viz-orange);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.archive-viz__view-title {
  margin: 0;
  font-family: var(--viz-font-heading);
  font-size: clamp(1.8rem, 1.45rem + 1vw, 2.7rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.045em;
}

.archive-viz__view-description,
.archive-viz__view-note {
  color: var(--viz-text-soft);
  font-size: 0.88rem;
  line-height: 1.45;
}

.archive-viz__view-description {
  max-width: 46rem;
  margin: 0.45rem 0 0;
}

.archive-viz__view-note {
  align-self: end;
  margin: 0;
}

.archive-viz__stage {
  position: relative;
  min-height: 34rem;
  overflow: hidden;
  padding: clamp(1rem, 2.5vw, 1.75rem);
  background:
    linear-gradient(to right, rgba(222, 217, 229, 0.18) 0.0625rem, transparent 0.0625rem),
    linear-gradient(to bottom, rgba(222, 217, 229, 0.13) 0.0625rem, transparent 0.0625rem),
    var(--viz-surface);
  background-size: 4rem 4rem;
}

.archive-viz__loading,
.archive-viz__error,
.archive-viz__empty {
  min-height: 29rem;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 0.75rem;
  color: var(--viz-text-muted);
  text-align: center;
}

.archive-viz__loading-mark {
  width: 2.25rem;
  height: 2.25rem;
  border: 0.1875rem solid var(--viz-lavender);
  border-top-color: var(--viz-purple);
  border-radius: 50%;
  animation: archive-viz-spin 0.9s linear infinite;
}

.archive-viz__error strong {
  color: var(--viz-text);
}

/* --------------------------------------------------------------------------
   Visualization controls

   The grid automatically divides available width among however many
   controls are present. No view count is hard-coded.
   -------------------------------------------------------------------------- */

.archive-viz__controls {
  display: grid;

  grid-template-columns:
    repeat(
      auto-fit,
      minmax(min(100%, 10rem), 1fr)
    );

  gap: var(--border-width, 0.0625rem);

  border-bottom:
    var(--border-width, 0.0625rem)
    solid
    var(--viz-border-strong);

  background:
    var(--viz-border-strong);
}


.archive-viz__control {
  min-width: 0;
  min-height: 3.5rem;

  display: flex;
  align-items: center;

  gap: 0.65rem;

  padding: 0.75rem 1rem;

  border: 0;

  color:
    var(--viz-text-soft);

  background:
    var(--viz-surface-muted);

  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;

  text-align: left;

  cursor: pointer;

  transition:
    color
      var(--viz-fast)
      var(--viz-ease),
    background-color
      var(--viz-fast)
      var(--viz-ease);
}


.archive-viz__control:hover,
.archive-viz__control:focus-visible {
  color:
    var(--viz-purple-dark);

  background:
    var(--viz-lavender-soft);
}


.archive-viz__control.is-active,
.archive-viz__control[aria-pressed="true"] {
  color: #ffffff;

  background:
    var(--viz-purple);
}


.archive-viz__control-index {
  color: currentColor;

  font-size: 0.66rem;
  font-weight: 700;

  letter-spacing: 0.08em;

  opacity: 0.68;
}

.archive-viz__noscript {
  padding: 1rem;
  border: 0.0625rem solid var(--viz-border);
  background: var(--viz-surface-muted);
}

/* --------------------------------------------------------------------------
   Shared SVG typography
   -------------------------------------------------------------------------- */

.archive-viz svg {
  width: 100%;
  height: auto;
  overflow: visible;
  font-family: var(--viz-font-body);
}

.archive-viz .viz-axis text {
  fill: var(--viz-text-muted);
  font-size: 0.72rem;
}

.archive-viz .viz-axis line,
.archive-viz .viz-axis path {
  stroke: var(--viz-border);
}

.archive-viz .viz-grid line {
  stroke: var(--viz-border);
  stroke-dasharray: 2 5;
}

.archive-viz .viz-grid path {
  display: none;
}

.archive-viz__tooltip {
  position: fixed;
  z-index: 4000;
  max-width: 17rem;
  padding: 0.55rem 0.7rem;
  border: 0.0625rem solid rgba(255, 255, 255, 0.14);
  color: #ffffff;
  background: rgba(23, 20, 31, 0.95);
  box-shadow: 0 0.65rem 1.8rem rgba(23, 20, 31, 0.22);
  font-size: 0.76rem;
  line-height: 1.35;
  pointer-events: none;
  opacity: 0;
  transform: translateY(0.25rem);
  transition:
    opacity var(--viz-fast) var(--viz-ease),
    transform var(--viz-fast) var(--viz-ease);
}

.archive-viz__tooltip.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.archive-viz__tooltip strong {
  display: block;
  margin-bottom: 0.1rem;
}

/* --------------------------------------------------------------------------
   Publishers: horizontal bars
   -------------------------------------------------------------------------- */

.archive-viz__publisher-chart {
  min-height: 32rem;
}

.archive-viz .viz-publisher-label {
  fill: var(--viz-text);
  font-size: 0.76rem;
  font-weight: 650;
}

.archive-viz .viz-publisher-value {
  fill: var(--viz-text-muted);
  font-size: 0.7rem;
  font-weight: 650;
}

.archive-viz .viz-publisher-bar {
  fill: var(--viz-purple);
  transition: fill var(--viz-fast) var(--viz-ease);
}

.archive-viz .viz-publisher-row:hover .viz-publisher-bar,
.archive-viz .viz-publisher-row:focus .viz-publisher-bar {
  fill: var(--viz-purple-dark);
}

.archive-viz .viz-publisher-bar.is-other {
  fill: var(--viz-lavender);
}

/* --------------------------------------------------------------------------
   Categories: treemap
   -------------------------------------------------------------------------- */

.archive-viz__treemap {
  min-height: 32rem;
}

.archive-viz .viz-category-node {
  outline: none;
}

.archive-viz .viz-category-node rect {
  stroke: var(--viz-surface);
  stroke-width: 0.125rem;
  transition:
    filter var(--viz-fast) var(--viz-ease),
    opacity var(--viz-fast) var(--viz-ease);
}

.archive-viz .viz-category-node:hover rect,
.archive-viz .viz-category-node:focus-visible rect {
  filter: brightness(0.94) saturate(1.08);
}

.archive-viz .viz-category-label {
  font-size: 0.7rem;
  font-weight: 700;
  pointer-events: none;
}

.archive-viz .viz-category-count {
  font-size: 0.62rem;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Eras: donut + legend
   -------------------------------------------------------------------------- */

.archive-viz__era-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  min-height: 31rem;
}

.archive-viz__era-chart {
  width: min(100%, 28rem);
  margin-inline: auto;
}

.archive-viz .viz-era-segment {
  stroke: var(--viz-surface);
  stroke-width: 0.1875rem;
  transition:
    opacity var(--viz-fast) var(--viz-ease),
    transform var(--viz-fast) var(--viz-ease);
  transform-origin: center;
}

.archive-viz .viz-era-segment:hover,
.archive-viz .viz-era-segment:focus-visible {
  opacity: 0.86;
}

.archive-viz .viz-era-center-value {
  fill: var(--viz-text);
  font-family: var(--viz-font-heading);
  font-size: 2rem;
  letter-spacing: 0.04em;
  text-anchor: middle;
}

.archive-viz .viz-era-center-label {
  fill: var(--viz-text-muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-anchor: middle;
  text-transform: uppercase;
}

.archive-viz__era-legend {
  display: grid;
  gap: 0;
  border-top: 0.0625rem solid var(--viz-border);
}

.archive-viz__era-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.8rem 0;
  border-bottom: 0.0625rem solid var(--viz-border);
}

.archive-viz__era-swatch {
  width: 0.75rem;
  height: 0.75rem;
}

.archive-viz__era-name {
  display: block;
  color: var(--viz-text);
  font-weight: 700;
}

.archive-viz__era-range {
  display: block;
  margin-top: 0.05rem;
  color: var(--viz-text-muted);
  font-size: 0.72rem;
}

.archive-viz__era-value {
  text-align: right;
}

.archive-viz__era-value strong {
  display: block;
  color: var(--viz-text);
  font-family: var(--viz-font-heading);
  font-size: 1.45rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.035em;
}

.archive-viz__era-value span {
  color: var(--viz-text-muted);
  font-size: 0.68rem;
}

.archive-viz__era-years {
  grid-column: 1 / -1;
  display: flex;
  align-items: end;
  gap: 0.125rem;
  height: 2.5rem;
  margin-top: 0.5rem;
}

.archive-viz__era-year-bar {
  min-width: 0.125rem;
  flex: 1 1 0;
  background: var(--viz-border-strong);
  opacity: 0.72;
}

/* --------------------------------------------------------------------------
   Topics: linked topic/category map
   -------------------------------------------------------------------------- */

.archive-viz__topic-map {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.archive-viz__topic-card {
  position: relative;
  min-width: 0;
  padding: 1rem;
  border: 0.0625rem solid var(--viz-border);
  background: rgba(255, 255, 255, 0.9);
  transition:
    border-color var(--viz-fast) var(--viz-ease),
    box-shadow var(--viz-fast) var(--viz-ease),
    transform var(--viz-fast) var(--viz-ease);
}

.archive-viz__topic-card:hover {
  border-color: var(--viz-border-strong);
  box-shadow: 0 0.5rem 1.25rem rgba(35, 23, 55, 0.08);
  transform: translateY(-0.125rem);
}

.archive-viz__topic-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
  padding-bottom: 0.6rem;
  border-bottom: 0.125rem solid var(--topic-accent, var(--viz-purple));
}

.archive-viz__topic-link {
  color: var(--viz-text);
  font-family: var(--viz-font-heading);
  font-size: 1.45rem;
  line-height: 1;
  letter-spacing: 0.045em;
  text-decoration: none;
}

.archive-viz__topic-link:hover,
.archive-viz__topic-link:focus-visible {
  color: var(--viz-purple-dark);
}

.archive-viz__topic-count {
  color: var(--viz-text-muted);
  font-size: 0.68rem;
  font-weight: 700;
  white-space: nowrap;
}

.archive-viz__category-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
}

.archive-viz__category-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 1.85rem;
  padding: 0.28rem 0.48rem;
  border: 0.0625rem solid var(--viz-border);
  color: var(--viz-text-soft);
  background: var(--viz-surface);
  font-size: 0.69rem;
  font-weight: 650;
  line-height: 1.2;
  text-decoration: none;
  transition:
    color var(--viz-fast) var(--viz-ease),
    border-color var(--viz-fast) var(--viz-ease),
    background-color var(--viz-fast) var(--viz-ease);
}

.archive-viz__category-link:hover,
.archive-viz__category-link:focus-visible {
  border-color: var(--topic-accent, var(--viz-purple));
  color: var(--viz-text);
  background: var(--viz-lavender-soft);
}

.archive-viz__category-count {
  color: var(--viz-text-muted);
  font-size: 0.61rem;
  font-weight: 700;
}

.archive-viz__topic-unmapped {
  grid-column: 1 / -1;
  padding: 0.8rem 1rem;
  border: 0.0625rem dashed var(--viz-border-strong);
  color: var(--viz-text-muted);
  background: rgba(245, 242, 251, 0.72);
  font-size: 0.75rem;
}

@keyframes archive-viz-spin {
  to {
    transform: rotate(360deg);
  }
}

/* --------------------------------------------------------------------------
   Standalone topics widget
   -------------------------------------------------------------------------- */

.archive-viz--topics .archive-viz__stage {
  min-height: 0;
}

.archive-viz--topics .archive-viz__topic-map {
  padding: 0;
}

@media (min-width: 43.75rem) {
  .archive-viz__summary {
    grid-template-columns:
      repeat(4, minmax(0, 1fr));
  }

  .archive-viz__view-header {
    grid-template-columns:
      minmax(0, 1fr)
      minmax(12rem, 22rem);

    align-items: end;
  }

  .archive-viz__era-layout {
    grid-template-columns:
      minmax(18rem, 0.85fr)
      minmax(20rem, 1fr);
  }

  .archive-viz__topic-map {
    grid-template-columns:
      repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 67.5rem) {
  .archive-viz__heading-row {
    grid-template-columns: minmax(0, 1fr) minmax(32rem, 0.72fr);
  }

  .archive-viz__topic-map {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .archive-viz__loading-mark {
    animation: none;
  }

  .archive-viz__topic-card,
  .archive-viz__tooltip,
  .archive-viz .viz-publisher-bar,
  .archive-viz .viz-era-segment {
    transition: none;
  }
}