/* ==========================================================
   Church History Timeline — Map View — timeline canvas, era bands, axis, event nodes, nav controls, legend, empty state
   Part of the split stylesheet (see css/ for the rest): base.css,
   top-bar.css, datasource-filters.css, map-view.css, side-panel.css,
   article-view.css, mobile-view.css. Loaded as separate <link>
   tags in index.html; order barely matters for CSS (later same-
   specificity rules win, and there are no same-selector conflicts
   across these files) — base.css is simply listed first as a
   convention, since it holds the shared :root variables and button
   primitives (.btn, .jump-btn, .read-article-btn, .google-search-btn)
   the other files build on.
   ========================================================== */

/* ---------------- Timeline area ---------------- */

#timeline-area {
  position: relative;
  flex: 1 1 auto;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(201,154,30,0.06), transparent 60%),
    var(--bg);
  cursor: grab;
  touch-action: none;
}
#timeline-area.dragging { cursor: grabbing; }

#timeline-viewport {
  position: absolute;
  inset: 0;
}

#era-band-layer {
  position: absolute;
  top: 0;
  left: 0;
  height: 34px;
  right: 0;
  z-index: 3;
}
.era-band {
  position: absolute;
  top: 0;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--line);
  background: rgba(244, 236, 216, 0.03);
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 1px;
  color: #b9ac86;
  overflow: hidden;
  white-space: nowrap;
  pointer-events: none;
}

#axis-layer {
  position: absolute;
  top: 34px;
  left: 0;
  right: 0;
  height: 30px;
  border-bottom: 1px solid var(--line-strong);
  background: rgba(0,0,0,0.18);
  z-index: 3;
}

.axis-marker {
  position: absolute;
  top: 0;
  height: 100%;
  display: flex;
  align-items: center;
  font-size: 11px;
  color: #a99f84;
  padding-left: 6px;
  border-left: 1px solid var(--line);
  white-space: nowrap;
}
.axis-marker.major {
  color: var(--gold-bright);
  font-weight: 600;
  border-left: 1px solid var(--line-strong);
}

#center-line {
  position: absolute;
  top: 64px;
  bottom: 0;
  left: 0;
  right: 0;
  pointer-events: none;
}

#lifespan-layer {
  position: absolute;
  top: 78px;
  left: 0;
  right: 0;
  height: 30px;
  z-index: 4;
  pointer-events: none;
}

#lanes-layer {
  position: absolute;
  top: 78px;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: visible;
}

.lifespan-track {
  position: absolute;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, rgba(232,194,87,0.15), rgba(232,194,87,0.55), rgba(232,194,87,0.15));
  top: 8px;
  z-index: 2;
}

/* Event nodes */
.event-node {
  position: absolute;
  transform: translate(-50%, 0);
  border-radius: 8px;
  border: 1px solid rgba(0,0,0,0.35);
  padding: 5px 10px;
  font-size: 12px;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 3px 8px rgba(0,0,0,0.35);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: box-shadow 0.15s, transform 0.15s, filter 0.15s, max-width 0.2s ease;
}
.event-node:hover {
  filter: brightness(1.18);
  box-shadow: 0 8px 20px rgba(0,0,0,0.55);
  z-index: 999 !important;
  max-width: 640px !important;
  transform: translate(-50%, -2px) scale(1.04);
}
.event-node.selected {
  outline: 2px solid var(--gold-bright);
  outline-offset: 2px;
}
.event-node .dot-year {
  /* Relative to the node's own font-size (set inline, per node, every
     render — see nodeFontPx() in map-view.js) rather than a fixed px, so
     the year label scales along with the rest of the bubble's text
     instead of staying a fixed size while everything around it grows. */
  font-size: 0.82em;
  opacity: 0.85;
  flex: 0 0 auto;
}
.event-node.dimmed { opacity: 0.16; }

/* Width, font-size and padding are all set inline per node, every
   renderLanes() call (see nodeWidthPx()/nodeFontPx()/nodePaddingPx() in
   map-view.js) — combining desktop's importance-based or mobile's uniform
   base size with the current zoom-linked scale factor and (mobile only)
   the manual Bubble Size / Text Size sliders, then capping the result to
   a screen-relative max so a bubble is never "huge" relative to the
   viewport no matter how far zoomed in. There's nothing left for CSS
   classes to do for sizing.

   Mobile Map View bubbles are display-only (a single tap does nothing,
   only a double-tap does anything — see handleMobileNodeTap()), so the
   hover "pop out and expand" affordance is neutralized here: it would
   otherwise still fire from a touch's synthetic hover state even though
   tapping no longer opens anything. */
.event-node.mobile-noninteractive {
  cursor: inherit; /* let #timeline-area's grab/grabbing cursor show through instead of a clickable pointer */
}
.event-node.mobile-noninteractive:hover {
  filter: none;
  box-shadow: 0 3px 8px rgba(0,0,0,0.35);
  z-index: auto !important; /* cancel the base .event-node:hover rule's 999 !important */
  /* max-width is NOT overridden here — the base .event-node:hover rule's
     "640px !important" can only be beaten by an equally-important
     declaration, and no CSS value works generically since each node's
     own max-width is a dynamic, per-node inline value. Instead
     renderLanes() (map-view.js) sets mobile nodes' max-width via
     style.setProperty(..., "important") every render, which (being an
     *inline* !important) outranks this stylesheet's !important. */
}

/* ---------------- Zoom / nav controls ---------------- */

#nav-controls {
  position: absolute;
  right: 18px;
  bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 30;
}

.nav-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(35, 32, 25, 0.9);
  color: var(--parchment);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.nav-btn:hover { background: rgba(201, 154, 30, 0.3); }

#bottom-left-controls {
  position: absolute;
  left: 18px;
  bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 30;
}

#zoom-readout {
  font-size: 11px;
  color: #9a917c;
  background: rgba(35,32,25,0.75);
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
}

#hint-banner {
  position: absolute;
  bottom: 62px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(35,32,25,0.9);
  border: 1px solid var(--line-strong);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 12px;
  color: #cfc4a4;
  z-index: 25;
  pointer-events: none;
  transition: opacity 0.4s;
}

/* ---------------- Persistent legend bar (always visible) ---------------- */

#legend-bar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 7px 20px;
  background: #1e1b16;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  white-space: nowrap;
}

.legend-bar-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #9a917c;
  flex: 0 0 auto;
}

#legend-bar-items {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: nowrap;
}

.legend-bar-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: #cfc4a4;
  flex: 0 0 auto;
  cursor: pointer;
  padding: 3px 6px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: background 0.15s, opacity 0.15s, border-color 0.15s;
}
.legend-bar-item:hover { background: rgba(255,255,255,0.06); }
.legend-bar-item:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 1px; }
.legend-bar-item.selected {
  background: rgba(201,154,30,0.16);
  border-color: rgba(201,154,30,0.5);
  color: var(--gold-bright);
}
.legend-bar-item.dimmed { opacity: 0.4; }
.legend-bar-item .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex: 0 0 auto;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.3);
}

/* Empty state */
#empty-state {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #9a917c;
  z-index: 5;
  pointer-events: none;
}
#empty-state h3 { font-family: var(--font-serif); color: var(--gold-bright); margin-bottom: 6px; }

@media (max-width: 760px) {
  #legend-bar { padding: 6px 12px; gap: 8px; }
}