/* timeline.css — Ottoman Timeline · Archival Print Layout
   Single-column editorial longread. No era theming. No shadows.
   ─────────────────────────────────────────────────────────── */

/* ── PUBLICATION SHELL ────────────────────────────────────────── */

.pub {
  max-width: var(--measure-wide);
  margin: 0 auto;
  padding: 72px 48px 120px;
}

/* ── PUBLICATION HEADER ───────────────────────────────────────── */

.pub-header {
  text-align: center;
  padding-bottom: var(--space-8);
  border-bottom: var(--rule-hair);
}

.pub-header .t-eyebrow {
  margin-bottom: var(--space-3);
}

.pub-header .t-h1 {
  margin: var(--space-3) 0 var(--space-3);
}

/* ── STICKY STEPPER + SEARCH ──────────────────────────────────── */

.stepper-wrap {
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 100;
  border-bottom: var(--rule-thin);
  margin: 0 -48px;
  padding: 0 48px;
}

.stepper-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
}

.stepper {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 19px;
}

.step-link {
  position: relative;
  color: var(--ink-faint);
  border: 0;
  font-style: italic;
  font-weight: var(--fw-regular);
  padding: 2px 4px;
  line-height: 1;
  transition: color var(--dur-link) var(--ease);
  white-space: nowrap;
}
.step-link:hover {
  color: var(--ink);
  border: 0;
}
.step-link.is-active {
  color: var(--oxblood);
  font-weight: var(--fw-medium);
  border: 0;
}

/* ── STEP-POP (hover popup, oxblood seal-card) ────────────────── */

.step-pop {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translate(-50%, -4px);
  opacity: 0;
  pointer-events: none;
  z-index: 200;
  font-style: normal;
  background: var(--oxblood);
  border-top: 2px solid var(--oxblood-deep);
  padding: 9px 16px 10px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: max-content;
  min-width: 180px;
  max-width: min(280px, 90vw);
  transition:
    opacity 0.12s var(--ease),
    transform 0.12s var(--ease);
}

.step-link:hover .step-pop,
.step-link:focus-visible .step-pop {
  opacity: 1;
  transform: translate(-50%, 0);
}

.step-pop .pop-eyebrow {
  font-family: var(--font-body);
  font-size: 9px;
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-smallcaps);
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0.78;
  white-space: nowrap;
}

.step-pop .pop-label {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 17px;
  color: var(--paper);
  line-height: 1.2;
}

/* Hide popups on touch-only devices — tapping navigates directly. */
@media (hover: none) {
  .step-pop { display: none; }
}

/* Stats label — shown inline next to the search icon */
.stats-label {
  font-family: var(--font-body);
  font-size: var(--fs-folio);
  color: var(--ink-faint);
  letter-spacing: var(--ls-folio);
  white-space: nowrap;
  font-variant-numeric: oldstyle-nums;
}

/* Search toggle (magnifier icon) */
.search-toggle {
  background: transparent;
  border: 0;
  color: var(--ink-faint);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  padding: 0;
  transition: color var(--dur-link) var(--ease);
}
.search-toggle:hover { color: var(--oxblood); }
.search-toggle:focus-visible {
  outline: 1px solid var(--oxblood);
  outline-offset: 2px;
}

/* Sub-row: holds caption OR search overlay (one at a time). */
.sub-row {
  /* no fixed height — collapses when both children are hidden */
}

/* Search overlay — replaces the caption when active */
.search-overlay {
  display: none;
  background: var(--paper);
  align-items: center;
  gap: var(--space-2);
  padding: 8px 0;
  border-top: var(--rule-hair);
}
.stepper-wrap.is-searching .search-overlay {
  display: flex;
}

.search-input {
  flex: 1;
  min-width: 0;
  padding: 7px 12px;
  background: transparent;
  border: var(--rule-hair);
  border-radius: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-meta);
  outline: none;
  transition: border-color var(--dur-link) var(--ease);
}
.search-input::placeholder {
  color: var(--ink-faint);
  font-style: italic;
}
.search-input:focus {
  border-color: var(--oxblood);
}

.search-close {
  background: transparent;
  border: 0;
  color: var(--ink-faint);
  cursor: pointer;
  width: 32px;
  height: 32px;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color var(--dur-link) var(--ease);
  flex-shrink: 0;
}
.search-close:hover { color: var(--oxblood); }

/* ── ACTIVE-ERA CAPTION (below stepper, both desktop & mobile) ── */

.active-era {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: var(--space-3);
  padding: 10px 0 12px;
  border-top: var(--rule-hair);
  white-space: nowrap;
  overflow: hidden;
}

/* Hide caption (and its row) while search is active or an era title is on screen */
.stepper-wrap.is-searching .active-era,
.active-era.era-title-visible {
  display: none;
}

.active-era__dates {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--ink-soft);
  font-variant-numeric: oldstyle-nums;
  letter-spacing: var(--ls-folio);
  flex-shrink: 0;
}

.active-era__sep {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 18px;
  color: var(--ink-faint);
  flex-shrink: 0;
  line-height: 1;
}

.active-era__label {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 19px;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
  line-height: 1.1;
}

/* Hide all parts gracefully before the first era is set */
.active-era:not(.is-ready) > * {
  visibility: hidden;
}

/* Hide dates + separator if the era has no parenthetical date range */
.active-era.no-dates .active-era__dates,
.active-era.no-dates .active-era__sep {
  display: none;
}

/* ── ERA SECTION ──────────────────────────────────────────────── */

.era-section {
  margin-top: var(--space-10);
}

.era-section:first-child {
  margin-top: var(--space-8);
}

/* ── ERA OPENER ───────────────────────────────────────────────── */

.era-opener {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-6);
  align-items: start;
  padding: var(--space-8) 0 var(--space-7);
  margin: 0 -48px;
  padding-left: 48px;
  padding-right: 48px;
  background: linear-gradient(to bottom, var(--oxblood-tint), transparent 90%);
  border-top: var(--rule-thin);
}

.era-numeral {
  font-family: var(--font-display);
  font-size: var(--fs-numeral);
  font-weight: var(--fw-light);
  font-style: italic;
  color: var(--oxblood);
  line-height: 0.85;
  text-align: right;
  font-variant-numeric: oldstyle-nums;
  padding-top: 8px;
}

.era-title-block {
  padding-top: var(--space-4);
}

.era-title-block .t-eyebrow {
  margin-bottom: var(--space-2);
}

.era-title {
  margin: var(--space-2) 0 var(--space-3);
}

.era-epigraph {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  line-height: 1.45;
  color: var(--ink-soft);
  max-width: 560px;
}

/* ── EVENTS BLOCK ─────────────────────────────────────────────── */

.events {
  margin-top: var(--space-7);
  border-top: var(--rule-hair);
  padding-top: var(--space-1);
}

.event {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-7);
  padding: var(--space-7) 0;
  border-bottom: var(--rule-hair);
}

.event:last-child {
  border-bottom: 0;
}

/* KEY summary events */
.key-event .event-folio-year {
  color: var(--oxblood);
}

.key-event .event-text {
  color: var(--ink-soft);
  font-style: italic;
}

/* ── YEAR FOLIO (margin column) ───────────────────────────────── */

.event-folio {
  text-align: right;
  padding-top: 8px;
  line-height: 1.5;
}

.event-folio-year {
  display: block;
  font-family: var(--font-display);
  font-size: 22px;
  font-style: italic;
  font-weight: var(--fw-regular);
  color: var(--ink);
  font-variant-numeric: oldstyle-nums;
  letter-spacing: 0;
}

/* ── EVENT BODY ───────────────────────────────────────────────── */

.event-body {
  max-width: var(--measure);
}

.event-text {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--ink);
  margin: 0;
}

/* Superscript footnote reference numbers */
.fn-ref {
  font-family: var(--font-body);
  font-size: 0.65em;
  vertical-align: super;
  line-height: 0;
  margin-left: 1px;
}

.fn-ref a {
  color: var(--oxblood);
  border: 0;
  font-weight: var(--fw-medium);
}
.fn-ref a:hover {
  color: var(--oxblood-deep);
  border: 0;
}

/* ── FOOTNOTES ────────────────────────────────────────────────── */

.footnotes {
  padding: var(--space-7) 0 var(--space-6) 128px;
}

.footnotes-rule {
  width: 72px;
  height: 0;
  border: 0;
  border-top: var(--rule-thin);
  margin-bottom: var(--space-4);
}

.footnotes .t-eyebrow {
  margin-bottom: var(--space-3);
}

.footnotes-list {
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ink-soft);
  padding-left: var(--space-5);
  margin: 0;
  font-variant-numeric: oldstyle-nums;
}

.footnotes-list li {
  padding-left: var(--space-1);
  margin-bottom: 2px;
}

.footnotes-list a {
  color: var(--oxblood);
  border-bottom: 1px solid rgba(122, 31, 31, 0.28);
}
.footnotes-list a:hover {
  color: var(--oxblood-deep);
  border-bottom-color: var(--oxblood-deep);
}

/* ── NO RESULTS ───────────────────────────────────────────────── */

.no-results {
  text-align: center;
  padding: 80px 20px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 22px;
  color: var(--ink-faint);
}

/* ── SCROLL-TO-TOP ────────────────────────────────────────────── */

#scroll-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-6);
  width: 40px;
  height: 40px;
  background: var(--paper);
  border: var(--rule-thin);
  color: var(--ink-soft);
  font-family: var(--font-display);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease),
              color var(--dur-link) var(--ease),
              border-color var(--dur-link) var(--ease);
  z-index: 200;
}
#scroll-top:hover {
  color: var(--oxblood);
  border-color: var(--oxblood);
}

/* ── FOOTER ───────────────────────────────────────────────────── */

.pub-footer {
  margin-top: var(--space-10);
  padding-top: var(--space-7);
  text-align: center;
  border-top: var(--rule-thin);
}

.pub-footer .t-eyebrow {
  margin-bottom: var(--space-4);
}

.pub-footer-text {
  font-family: var(--font-body);
  font-size: 14px;
  font-style: italic;
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ── RESPONSIVE ───────────────────────────────────────────────── */

@media (max-width: 700px) {
  .pub {
    padding: 40px 20px 80px;
  }

  .stepper-wrap {
    margin: 0 -20px;
    padding: 0 20px;
  }

  .stepper {
    gap: var(--space-2) var(--space-3);
    font-size: 16px;
  }

  .step-link {
    padding: 6px 8px;
    min-width: 32px;
    text-align: center;
  }

  /* Free up room: hide stats label, keep toggle */
  .stats-label { display: none; }

  .search-input {
    font-size: 14px;
    padding: 8px 12px;
  }

  .active-era {
    padding: 8px 0 10px;
    gap: var(--space-2);
  }
  .active-era__label {
    font-size: 16px;
  }
  .active-era__dates {
    font-size: 12px;
  }
  .active-era__sep {
    font-size: 16px;
  }

  .era-opener {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    margin: 0 -20px;
    padding: var(--space-7) 20px var(--space-5);
  }

  .era-numeral {
    font-size: 64px;
    text-align: left;
    padding-top: 0;
  }

  .era-title-block {
    padding-top: 0;
  }

  .event {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    padding: var(--space-5) 0;
  }

  .event-folio {
    text-align: left;
    padding-top: 0;
    display: flex;
    align-items: baseline;
    gap: var(--space-3);
  }

  .event-folio-year {
    font-size: 18px;
  }

  .footnotes {
    padding-left: 0;
  }

  .search-input {
    max-width: 100%;
  }

  #scroll-top {
    bottom: var(--space-5);
    right: var(--space-4);
  }
}

@media (max-width: 480px) {
  .stepper {
    gap: var(--space-1) var(--space-2);
    font-size: 15px;
  }

  .step-link {
    padding: 6px 6px;
    min-width: 28px;
  }

  .pub-footer-text {
    font-size: 13px;
  }
}