.timeline-body {
  display: flex;
  flex-direction: column;
  margin: 20px;
  background-color: #f8f8f8;
  font-family: 'Fira Sans', Arial;
  --drawer-width: 520px;
  /* Panel closed: like index.html — scroll, sankey max 1000px, natural height */
  min-height: 100vh;
  height: auto;
  overflow-x: hidden;
  overflow-y: auto;
}

/* With pane open: same height behavior as closed — page scrolls, sankey is not forced to viewport height */
.timeline-body.controls-open {
  min-height: 0;
}

.timeline-shell {
  display: flex;
  flex-direction: row;
  flex: 1 1 auto;
  min-height: 0;
  position: relative;
}

/* Avoid stretching the main column to the viewport when content is shorter — removes the gray gap below the sankey */
.timeline-body:not(.controls-open) {
  min-height: 0;
}

.timeline-body:not(.controls-open) .timeline-shell {
  flex: 0 0 auto;
  align-items: flex-start;
  min-height: 0;
}

.timeline-body.controls-open .timeline-shell {
  flex: 0 0 auto;
  align-items: flex-start;
  min-height: 0;
}

.main-column {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
  box-sizing: border-box;
  padding-right: 0;
  transition: padding-right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-body:not(.controls-open) .main-column {
  flex: 1 1 auto;
  min-height: auto;
}

.timeline-body.controls-open .main-column {
  padding-right: var(--drawer-width);
  flex: 1 1 auto;
  min-height: auto;
}

/*
 * Title uses .header from style.css, which sets line-height: 32px with font-size: 50px
 * and height: 80px — that clips ascenders/descenders and wrapped lines. Override here.
 */
.timeline-body .header.timeline-page-header {
  flex-shrink: 0;
  height: auto;
  min-height: 0;
  overflow: visible;
  line-height: 1.12;
  margin-top: 20px;
  padding: 0.2em 0 0.3em;
  box-sizing: border-box;
  max-height: none;
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
  transition:
    opacity 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    max-height 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    margin-top 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    margin-bottom 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    padding 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0s;
}

.timeline-body.controls-open .header.timeline-page-header {
  opacity: 0;
  transform: translateY(-32px);
  max-height: 0;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  padding-top: 0;
  padding-bottom: 0;
  overflow: hidden;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    max-height 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    margin-top 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    margin-bottom 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    padding 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0s linear 0.32s;
}

.timeline-topbar-actions {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-shrink: 0;
  width: 100%;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 10px;
  box-sizing: border-box;
  margin-bottom: 4px;
}

.timeline-classic-link,
.timeline-classic-link:link,
.timeline-classic-link:visited,
.timeline-classic-link:active {
  font-family: 'Fira Sans', Arial;
  font-size: 12px;
  color: #999;
  text-decoration: none;
  white-space: nowrap;
}

.timeline-classic-link:hover {
  color: #333;
}

.timeline-body.controls-open .timeline-classic-link {
  display: none;
}

/* Footer: centered when closed; full width minus drawer + 20px left gutter when open */
.timeline-body #site-footer {
  margin-top: 50px;
  box-sizing: border-box;
  transition:
    margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    margin-right 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    max-width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-body:not(.controls-open) #site-footer {
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  max-width: 1000px;
}

.timeline-body.controls-open #site-footer {
  margin-left: 20px;
  margin-right: 0;
  width: calc(100% - var(--drawer-width) - 20px);
  max-width: none;
}

/* Visual style matches index.html “Explore historic data” (.index-timeline-link in style.css) */
.controls-expand-btn.index-timeline-link {
  position: static;
  cursor: pointer;
  margin: 0;
  appearance: none;
  -webkit-appearance: none;
}

.timeline-body.controls-open .controls-expand-btn {
  display: none;
}

.controls {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 150;
  width: var(--drawer-width);
  min-width: var(--drawer-width);
  max-width: var(--drawer-width);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  background: rgba(248, 248, 248, 0.98);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-left: 1px solid #e0e0e0;
  box-shadow: -4px 0 24px rgba(0,0,0,0.06);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  will-change: transform;
}

.timeline-body.controls-open .controls {
  transform: translateX(0);
  pointer-events: auto;
}

.controls-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  min-width: 0;
  width: 100%;
}

.controls-panel-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px 8px;
  border-bottom: 1px solid #e8e8e8;
}

.controls-panel-title {
  font-family: 'Fira Sans', Arial;
  font-size: 13px;
  font-weight: 600;
  color: #333;
}

.controls-collapse-btn {
  background: none;
  border: none;
  font-size: 22px;
  line-height: 1;
  color: #999;
  cursor: pointer;
  padding: 0 4px;
  line-height: 0.85;
}

.controls-collapse-btn:hover {
  color: #333;
}

.controls-inner {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 10px 14px 16px;
}

.controls-panel-slot {
  min-height: 0;
  margin-top: 12px;
}

/* Publisher tabs under main title when drawer is closed (tabs are moved in JS) */
.pub-tabs-main-slot {
  display: block;
  flex-shrink: 0;
  width: 100%;
  max-width: 1000px;
  margin: 8px auto 12px;
  padding: 0;
  box-sizing: border-box;
}

.timeline-body.controls-open .pub-tabs-main-slot {
  display: none;
}

.pub-tabs-panel-slot {
  flex-shrink: 0;
}

.pub-tabs {
  display: flex;
  gap: 2px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.pub-tab {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 5px 4px;
  font-family: 'Fira Sans', Arial;
  font-size: 13px;
  cursor: pointer;
  color: #999;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.pub-tab:hover {
  color: #333;
}

.pub-tab.active {
  color: #333;
  font-weight: 500;
}

.pub-tab.active[data-pub='PRH'] { border-bottom-color: #ff8433; }
.pub-tab.active[data-pub='HarperCollins'] { border-bottom-color: #007cc4; }
.pub-tab.active[data-pub='Macmillan'] { border-bottom-color: #c51039; }
.pub-tab.active[data-pub='SS'] { border-bottom-color: #cfab1c; }
.pub-tab.active[data-pub='Hachette'] { border-bottom-color: #777777; }

.slider-area {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  max-width: 100%;
}

.slider-year-label {
  font-family: 'Fira Sans', Arial;
  font-size: 11px;
  color: #999;
  flex-shrink: 0;
  margin-top: 60px;
  line-height: 12px;
  min-width: 2.2em;
}

.slider-year-label#year-range-start {
  text-align: right;
  margin-right: 10px;
}

.slider-year-label#year-range-end {
  text-align: left;
  margin-left: 10px;
}

.play-btn {
  background: none;
  border: 2px solid black;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  color: black;
  padding: 0;
  padding-left: 2px;
  margin-top: 50px;
  transition: background 0.15s, color 0.15s;
}

.play-btn:hover {
  background: black;
  color: #fff;
}

.slider-wrap {
  flex: 1;
  position: relative;
  padding-top: 60px;
  padding-bottom: 44px;
  cursor: pointer;
}

.change-bars {
  position: absolute;
  left: 0;
  right: 0;
  height: 96px;
  top: 66px;
  transform: translateY(-50%);
  pointer-events: none;
  z-index: 1;
}

.cbar {
  position: absolute;
  transform: translateX(-50%);
}

.cbar-up {
  bottom: calc(50% + 3.5px);
  background: #00a832;
  opacity: 0.8;
  border-radius: 3px 3px 0 0;
}

.cbar-down {
  top: calc(50% + 3.5px);
  background: #e01040;
  opacity: 0.8;
  border-radius: 0 0 3px 3px;
}

.date-display {
  font-family: 'Fira Sans', Arial;
  font-size: 14px;
  font-weight: 500;
  color: #333;
  white-space: nowrap;
  min-width: 130px;
  text-align: left;
  margin-top: 56px;
  margin-left: 20px;
}

/* width extension = 2 * TRACK_SIDE in js/timeline.js */
.custom-track {
  width: calc(100% + 20px);
  margin-left: -10px;
  margin-top: 3px;
  height: 6px;
  background: #ccc;
  border-radius: 6px;
  position: relative;
  cursor: pointer;
  box-shadow: 0 3px 4px -2px rgba(0,0,0,0.05), 0 -3px 4px -2px rgba(0,0,0,0.05);
  z-index: 2;
}

.custom-thumb {
  position: absolute;
  width: 21px;
  height: 5px;
  border-radius: 12px;
  background: black;
  cursor: pointer;
  top: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.2s ease, width 0.2s ease, height 0.2s ease, border-radius 0.2s ease;
  z-index: 3;
  box-sizing: border-box;
}

/* Hover anywhere in the slider column (track, thumb, padding, bars area) */
.slider-wrap:hover .custom-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(1.15);
}

.changes {
  margin-top: 4px;
  font-family: 'Fira Sans', Arial;
  font-size: 13px;
  line-height: 1.45;
}

.change-row {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-bottom: 8px;
}

.change-row:last-child {
  margin-bottom: 0;
}

.change-label {
  flex-shrink: 0;
  min-width: 80px;
  font-weight: 500;
  text-align: right;
}

.change-names {
  color: #666;
  flex: 1;
  min-width: 0;
  overflow-wrap: anywhere;
  word-wrap: break-word;
}

.change-added {
  color: #00a832;
  font-weight: 500;
}

.change-removed {
  color: #e01040;
  font-weight: 500;
}

.change-moved {
  color: #0066cc;
  font-weight: 500;
}

.change-pub {
  color: #999;
  font-size: 11px;
}

.no-changes {
  color: #999;
}

/* Imprint search (below snapshot changes) */
.imprint-search-section {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #e8e8e8;
  font-family: 'Fira Sans', Arial;
}

.imprint-search-heading {
  font-size: 13px;
  font-weight: 600;
  color: #333;
  margin: 0 0 6px;
}

/* Match .controls-keyboard-hint */
.imprint-search-label {
  display: block;
  margin: 0 0 8px;
  padding: 0;
  font-family: 'Fira Sans', Arial;
  font-size: 12px;
  line-height: 1.4;
  color: #999;
}

.imprint-search-input {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 8px 10px;
  font-family: 'Fira Sans', Arial;
  font-size: 13px;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #fff;
  margin-bottom: 12px;
}

.imprint-search-input:focus {
  outline: none;
  border-color: #888;
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.06);
}

.imprint-search-results {
  font-size: 12px;
  line-height: 1.45;
}

/* Match .imprint-search-label */
.imprint-search-empty {
  margin: 0;
  padding: 0;
  font-family: 'Fira Sans', Arial;
  font-size: 12px;
  line-height: 1.4;
  color: #999;
}

.imprint-search-group {
  margin-bottom: 16px;
}

.imprint-search-group:last-child {
  margin-bottom: 0;
}

.imprint-search-group-title {
  font-weight: 600;
  color: #333;
  margin-bottom: 6px;
  font-size: 13px;
}

.imprint-search-group-title .imprint-search-pub {
  font-weight: 500;
  color: #999;
  font-size: 11px;
  margin-left: 6px;
}

.imprint-search-detail {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.imprint-search-detail td {
  padding: 4px 8px 4px 0;
  vertical-align: top;
  border-bottom: 1px solid #f0f0f0;
}

.imprint-search-detail tr:last-child td {
  border-bottom: none;
}

.imprint-search-detail .is-kind {
  width: 5.5em;
  font-weight: 500;
  white-space: nowrap;
}

.imprint-search-detail .is-kind.is-added {
  color: #00a832;
}

.imprint-search-detail .is-kind.is-removed {
  color: #e01040;
}

.imprint-search-detail .is-kind.is-moved {
  color: #0066cc;
}

.imprint-search-detail .is-detail {
  color: #555;
}

.controls-keyboard-hint {
  margin: 10px 0 30px;
  padding: 0;
  font-family: 'Fira Sans', Arial;
  font-size: 12px;
  line-height: 1.4;
  color: #999;
}

.sankey-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  box-sizing: border-box;
  width: 100%;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  padding: 4px 10px;
  flex: 0 0 auto;
  min-height: auto;
  overflow: visible;
}

.timeline-body.controls-open .sankey-container {
  max-width: none;
  align-self: stretch;
}

/* Natural height — scroll page if needed (open or closed) */
.timeline-body .sankey-container svg {
  display: block;
  width: 100%;
  max-width: 1000px;
  height: auto;
  max-height: none;
}

.timeline-body .node rect {
  cursor: default;
}

@media only screen and (max-width: 900px) {
  .pub-tab {
    font-size: 11px;
    padding: 4px 8px;
  }
  .date-display {
    font-size: 12px;
    min-width: 90px;
  }
  .timeline-body .header.timeline-page-header {
    line-height: 1.2;
    padding: 0.15em 0 0.25em;
  }

  /* Full-screen controls: show either the pane or the page, not side-by-side */
  .timeline-body {
    margin: 12px;
  }

  .controls {
    left: 0;
    right: 0;
    width: auto;
    min-width: 0;
    max-width: none;
    box-sizing: border-box;
    padding-left: env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
  }

  .timeline-body.controls-open .main-column {
    padding-right: 0;
  }

  .timeline-body.controls-open #site-footer {
    margin-left: auto;
    margin-right: auto;
    width: 100%;
    max-width: 1000px;
  }

  /* Full-screen drawer above page content when open */
  .timeline-body.controls-open .controls {
    z-index: 300;
  }

  .timeline-topbar-actions {
    padding-right: calc(10px + env(safe-area-inset-right, 0));
  }
}