/* ════════════════════════════════════════════════════════
   COMPONENT — TIMELINE
   The bookstores-index city-timeline. Five chapters,
   hairline-ruled rows. Left-edge rule draws down per row
   on scroll-in. Hover: headline → accent, arrow translates,
   tick widens.
   ════════════════════════════════════════════════════════ */

.timeline {
  max-width: var(--max-container);
  margin: 0 auto;
  padding: clamp(40px, 5vh, 80px) 56px clamp(40px, 6vh, 80px);
  position: relative;
}
.timeline-stage { padding-left: var(--gutter-content); }

.timeline-eyebrow {
  font-family: var(--mono);
  font-size: var(--t-75);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--marginalia);
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: clamp(20px, 3vh, 32px);
}
.timeline-eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
  opacity: 0.7;
}

.timeline-list {
  padding-left: var(--gutter-content);
  padding-right: var(--gutter);
  list-style: none;
  margin: 0;
}

/* ─── City row ──────────────────────────────────────────── */
.city-row {
  --row-accent: var(--accent);
  --rule-scale: 0;
  --tick-scale: 0;
  display: grid;
  grid-template-columns: minmax(200px, 260px) 1fr;
  gap: clamp(40px, 5vw, 80px);
  padding: var(--pad-row-lg) 0 var(--pad-section-md) var(--gutter-content-mobile);
  border-top: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  position: relative;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.city-row:last-child {
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
}

/* Left-edge vertical rule — JS tweens --rule-scale */
.city-row::before {
  content: '';
  position: absolute;
  left: 0;
  top: -1px;
  bottom: -1px;
  width: 1px;
  background: var(--rule-strong);
  transform: scaleY(var(--rule-scale, 0));
  transform-origin: top center;
  will-change: transform;
}
.city-row[data-status="current"]::before { background: var(--accent); }
.city-row[data-status="upcoming"]::before {
  background: linear-gradient(
    to bottom,
    var(--rule-strong) 0 4px,
    transparent 4px 10px
  ) repeat-y;
  background-size: 1px 10px;
  width: 1px;
}

/* Tick on the spine — JS tweens --tick-scale */
.city-row::after {
  content: '';
  position: absolute;
  left: -6px;
  top: clamp(56px, 9vh, 112px);
  width: 13px;
  height: 1px;
  background: var(--rule-strong);
  transform: scaleX(var(--tick-scale, 0));
  transform-origin: left center;
}
.city-row[data-status="current"]::after { background: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  .city-row::before { transform: scaleY(1); }
  .city-row::after  { transform: scaleX(1); }
}

/* ─── Meta column (left) ────────────────────────────────── */
.city-meta-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 14px;
}
.city-dates {
  font-family: var(--mono);
  font-size: var(--t-81);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--marginalia);
  line-height: var(--lh-tight);
  font-variant-numeric: tabular-nums;
}
.city-dates .em-dash {
  color: color-mix(in srgb, var(--marginalia) 60%, transparent);
  padding: 0 4px;
}
.city-tag {
  font-family: var(--mono);
  font-size: var(--t-69);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  align-self: flex-start;
}
.city-tag::before {
  content: '';
  width: 14px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}
.city-tag.tag-quiet { color: var(--marginalia); }
.city-tag.tag-quiet::before { background: var(--marginalia); }

.city-shops {
  margin-top: auto;
  padding-top: 24px;
  font-family: var(--mono);
  font-size: var(--t-69);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--marginalia);
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.city-shops .count {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(var(--t-225), 4vw, var(--t-350));
  line-height: 1;
  letter-spacing: -0.018em;
  color: var(--ink);
  font-variation-settings: "opsz" 36, "wght" 600;
  font-feature-settings: "kern", "liga", "lnum", "tnum";
  transition: color 0.4s ease;
}
.city-shops .label {
  color: var(--marginalia);
  font-size: var(--t-69);
  letter-spacing: 0.24em;
}
.city-row[data-status="current"] .city-shops .count { color: var(--accent); }

/* ─── Body column (right) ───────────────────────────────── */
.city-body-col { display: flex; flex-direction: column; }

.city-name {
  font-family: var(--serif);
  font-weight: 600;
  font-variation-settings: "opsz" 72, "wght" 600;
  font-size: clamp(var(--t-275), 6.8vw, var(--t-700));
  line-height: var(--lh-display);
  letter-spacing: -0.022em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 0.18em;
  flex-wrap: wrap;
  transition: color 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
  margin: 0;
}
.city-name .city-arrow {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 0.42em;
  color: var(--accent);
  opacity: 0;
  transform: translate(-8px, 6px);
  transition:
    opacity 0.5s cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
  line-height: 1;
  letter-spacing: 0;
  align-self: baseline;
}
.city-name .word { display: inline-block; will-change: transform; }
.city-name .split-line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.08em;
}

.city-blurb {
  margin-top: clamp(24px, 3vh, 36px);
  font-family: var(--serif);
  font-size: clamp(var(--t-100), 1.25vw, var(--t-125));
  line-height: var(--lh-body);
  color: var(--ink-soft);
  font-variation-settings: "opsz" 18;
  max-width: 60ch;
}
.city-blurb em { font-style: italic; color: var(--ink); }

.city-locale {
  margin-top: clamp(20px, 2.5vh, 28px);
  padding-top: 16px;
  border-top: 1px solid color-mix(in srgb, var(--ink) 8%, transparent);
  font-family: var(--mono);
  font-size: var(--t-69);
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--marginalia);
  max-width: 60ch;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.city-locale .dot { color: color-mix(in srgb, var(--marginalia) 50%, transparent); }

/* Hover — desktop only */
@media (hover: hover) {
  .city-row:hover .city-name { color: var(--accent); }
  .city-row:hover .city-name .city-arrow {
    opacity: 1;
    transform: translate(0, 0);
  }
  .city-row:hover .city-shops .count { color: var(--accent); }
  .city-row:hover::after {
    width: 28px;
    transition: width 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  }
}
.city-row:focus-visible { outline: none; }
.city-row:focus-visible .city-name { color: var(--accent); }
.city-row:focus-visible .city-name .city-arrow {
  opacity: 1;
  transform: translate(0, 0);
}

/* ─── Trailer band below the timeline ──────────────────── */
.timeline-trailer {
  padding-left: var(--gutter-content);
  padding-right: var(--gutter);
  margin-top: clamp(36px, 5vh, 56px);
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--mono);
  font-size: var(--t-69);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--marginalia);
}
.timeline-trailer::before {
  content: '';
  flex: 0 0 28px;
  height: 1px;
  background: var(--rule-strong);
}

/* ─── Responsive ───────────────────────────────────────── */
@media (max-width: 980px) {
  .timeline { padding: clamp(32px, 5vh, 64px) 28px clamp(32px, 5vh, 64px); }
  .timeline-stage { padding-left: var(--gutter-content-mobile); }
  .timeline-list { padding-left: var(--gutter-content-mobile); padding-right: 0; }
  .timeline-trailer { padding-left: var(--gutter-content-mobile); padding-right: 0; }
}

@media (max-width: 720px) {
  .city-row {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: clamp(48px, 9vh, 80px) 0 clamp(40px, 7vh, 64px) 24px;
  }
  .city-row::after { top: clamp(48px, 9vh, 80px); }
  .city-meta-col { padding-top: 0; }
  .