/* ==========================================================================
   Page historique commune — timeline éditoriale
   ========================================================================== */

.chisto {
  --chisto-line: var(--ink);
  --chisto-era-origins: var(--green-dark);
  --chisto-era-antique: #8b6b4a;
  --chisto-era-fort: var(--blue);
  --chisto-era-canal: var(--blue);
  --chisto-era-modern: var(--soft);
  --chisto-era-industry: #6a5a48;
  --chisto-era-rail: var(--blue);
  --chisto-era-science: var(--green);
  --chisto-era-war: var(--clay);
  --chisto-era-battle: var(--clay);
  --chisto-era-memory: #8a4a3a;
  --chisto-era-rebuild: var(--gold);
  --chisto-era-commerce: var(--clay);
  --chisto-era-today: var(--ink);
}

.chisto-crumb {
  padding: 14px var(--pad-x);
  border-bottom: 2px solid var(--ink);
}

.chisto-hero {
  position: relative;
  min-height: 320px;
  border-bottom: 2px solid var(--ink);
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
}

.chisto-hero__media {
  position: absolute;
  inset: 0;
}

.chisto-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.85) contrast(1.05);
  transform: scale(1.04);
}

.chisto-hero__shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(29, 27, 22, 0.92) 0%, rgba(29, 27, 22, 0.72) 48%, rgba(29, 27, 22, 0.35) 100%),
    linear-gradient(0deg, rgba(29, 27, 22, 0.55) 0%, transparent 45%);
  pointer-events: none;
}

.chisto-hero__body {
  position: relative;
  z-index: 2;
  padding: 48px var(--pad-x) 40px;
  max-width: 720px;
}

.chisto-hero__kick {
  color: var(--gold);
  margin-bottom: 10px;
}

.chisto-hero h1 {
  margin: 0;
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.chisto-hero__lead {
  margin: 16px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.55;
  font-style: italic;
  color: rgba(233, 235, 227, 0.9);
}

.chisto-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 22px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  color: rgba(233, 235, 227, 0.75);
}

.chisto-hero__meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.chisto-hero__meta span::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--gold);
  border-radius: 1px;
}

/* Stats mosaic */
.chisto-stats {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-bottom: 2px solid var(--ink);
  background: var(--card);
}

.chisto-stat {
  padding: 22px 18px;
  border-right: 1px solid var(--line);
  min-height: 110px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  transition: background 0.25s ease;
}

.chisto-stat:last-child { border-right: 0; }
.chisto-stat:hover { background: var(--paper); }

.chisto-stat__value {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.1;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.chisto-stat__label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.chisto-stat__note {
  font-family: var(--font-serif);
  font-size: 13px;
  font-style: italic;
  color: var(--soft);
}

/* Era nav */
.chisto-eras {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  gap: 0;
  overflow-x: auto;
  border-bottom: 2px solid var(--ink);
  background: var(--paper);
  scrollbar-width: thin;
}

.chisto-eras a {
  flex: none;
  padding: 14px 20px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  border-right: 1px solid var(--line);
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease;
}

.chisto-eras a:hover {
  background: var(--ink);
  color: var(--paper);
}

.chisto-eras a small {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.chisto-eras a:hover small { color: rgba(233, 235, 227, 0.7); }

/* Layout */
.chisto-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 0;
  align-items: start;
}

.chisto-main {
  padding: 40px var(--pad-x) 56px;
  border-right: 2px solid var(--ink);
  min-width: 0;
}

.chisto-side {
  padding: 40px 28px 56px;
  background:
    linear-gradient(180deg, rgba(231, 176, 75, 0.08) 0%, transparent 180px),
    var(--paper);
  position: sticky;
  top: 52px;
}

.chisto-sec-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clay);
  margin-bottom: 10px;
}

.chisto-side h2 {
  margin: 0 0 18px;
  font-family: var(--font-ui);
  font-size: 22px;
  font-weight: 800;
  line-height: 1.15;
}

/* Era breaks (insérés dans la frise, dans l’ordre des dates) */
.chisto-era-break {
  list-style: none;
  margin: 8px 0 18px;
  padding: 0;
  scroll-margin-top: 72px;
}

.chisto-era-break:first-child { margin-top: 0; }

.chisto-era__head {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  align-items: end;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink);
}

.chisto-era__period {
  text-align: right;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--clay);
  line-height: 1.3;
  padding-bottom: 2px;
}

.chisto-era__title {
  margin: 0;
  font-family: var(--font-ui);
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* Timeline */
.chisto-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chisto-timeline--flat::before {
  content: "";
  position: absolute;
  left: 120px;
  top: 48px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(
    180deg,
    transparent 0%,
    var(--ink) 40px,
    var(--ink) calc(100% - 24px),
    transparent 100%
  );
}

.chisto-item {
  position: relative;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  padding: 0 0 28px;
  scroll-margin-top: 72px;
}

.chisto-item:last-child { padding-bottom: 0; }

.chisto-item__when {
  text-align: right;
  padding-top: 2px;
  position: relative;
}

.chisto-item__year {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.25;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.chisto-item__when::after {
  content: "";
  position: absolute;
  right: -34px;
  top: 8px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--ink);
  background: var(--card);
  border-radius: 50%;
  z-index: 2;
  box-sizing: border-box;
  transition: transform 0.25s ease, background 0.25s ease;
}

.chisto-item:hover .chisto-item__when::after,
.chisto-item--hl .chisto-item__when::after {
  background: var(--clay);
  border-color: var(--clay);
  transform: scale(1.15);
}

.chisto-item--now .chisto-item__when::after {
  background: var(--gold);
  border-color: var(--gold);
}

.chisto-item--now .chisto-item__year {
  color: var(--clay);
}

.chisto-item--now .chisto-item__card {
  border-color: var(--ink);
  border-width: 2px;
  background:
    linear-gradient(135deg, rgba(232, 176, 75, 0.16) 0%, transparent 50%),
    var(--card);
}

.chisto-item__card {
  background: var(--card);
  border: 1.5px solid var(--line);
  padding: 20px 22px 22px;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.chisto-item:hover .chisto-item__card {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.chisto-item--hl .chisto-item__card {
  border-color: var(--ink);
  border-width: 2px;
  background:
    linear-gradient(135deg, rgba(189, 75, 44, 0.06) 0%, transparent 55%),
    var(--card);
  box-shadow: 4px 4px 0 rgba(29, 27, 22, 0.08);
}

.chisto-item__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.2;
  color: var(--ink);
}

.chisto-item__body {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.6;
  color: var(--soft);
}

.chisto-item--hl .chisto-item__title {
  font-size: 24px;
}

/* Highlights side */
.chisto-hl {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.chisto-hl:first-of-type { border-top: 0; padding-top: 0; }

.chisto-hl h3 {
  margin: 0 0 8px;
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.25;
}

.chisto-hl p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.55;
  color: var(--soft);
}

.chisto-side__facts {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 2px solid var(--ink);
}

.chisto-side__facts dl {
  margin: 0;
  display: grid;
  gap: 14px;
}

.chisto-side__facts dt {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 3px;
}

.chisto-side__facts dd {
  margin: 0;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.chisto-sources {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-serif);
  font-size: 12px;
  font-style: italic;
  line-height: 1.45;
  color: var(--muted);
}

.chisto-back {
  display: inline-block;
  margin-top: 36px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 14px;
  border-bottom: 2px solid var(--ink);
  color: var(--ink);
  text-decoration: none;
}

.chisto-back:hover { opacity: 0.75; }

/* CTA */
.chisto-cta {
  position: relative;
  border-top: 2px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 56px var(--pad-x);
  overflow: hidden;
}

.chisto-cta::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -60px;
  width: 280px;
  height: 280px;
  border: 40px solid rgba(232, 176, 75, 0.12);
  border-radius: 50%;
  pointer-events: none;
}

.chisto-cta::after {
  content: "";
  position: absolute;
  left: 12%;
  bottom: 0;
  width: 120px;
  height: 4px;
  background: var(--gold);
}

.chisto-cta__inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.chisto-cta .kick {
  color: var(--gold);
  margin-bottom: 10px;
}

.chisto-cta h2 {
  margin: 0;
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: clamp(26px, 3.5vw, 36px);
  line-height: 1.15;
  color: var(--paper);
}

.chisto-cta p {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.55;
  font-style: italic;
  color: rgba(233, 235, 227, 0.85);
}

.chisto-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.chisto-cta__btn {
  display: inline-block;
  padding: 13px 24px;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  border: 0;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.chisto-cta__btn:hover { transform: translateY(-2px); }

.chisto-cta__btn--gold {
  background: var(--gold);
  color: var(--ink);
}

.chisto-cta__btn--outline {
  background: transparent;
  color: var(--paper);
  border: 1.5px solid rgba(233, 235, 227, 0.55);
}

.chisto-cta__btn--outline:hover {
  border-color: var(--paper);
  background: rgba(233, 235, 227, 0.08);
}

@media (max-width: 980px) {
  .chisto-stats { grid-template-columns: repeat(3, 1fr); }
  .chisto-stat:nth-child(3n) { border-right: 0; }
  .chisto-stat:nth-child(n+4) { border-top: 1px solid var(--line); }
  .chisto-layout { grid-template-columns: 1fr; }
  .chisto-main { border-right: 0; border-bottom: 2px solid var(--ink); }
  .chisto-side {
    position: static;
    padding: 32px var(--pad-x) 40px;
  }
}

@media (max-width: 640px) {
  .chisto-hero { min-height: 280px; }
  .chisto-hero__body { padding: 36px 20px 32px; }
  .chisto-stats { grid-template-columns: repeat(2, 1fr); }
  .chisto-stat { border-right: 1px solid var(--line); }
  .chisto-stat:nth-child(2n) { border-right: 0; }
  .chisto-stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .chisto-stat:nth-child(3n) { border-right: 1px solid var(--line); }
  .chisto-era__head,
  .chisto-item {
    grid-template-columns: 72px 1fr;
    gap: 20px;
  }
  .chisto-era__period { font-size: 10px; }
  .chisto-timeline::before { left: 72px; }
  .chisto-item__year { font-size: 13px; }
  .chisto-item__when::after {
    right: -26px;
    width: 10px;
    height: 10px;
  }
  .chisto-item__title { font-size: 19px; }
  .chisto-item--hl .chisto-item__title { font-size: 20px; }
  .chisto-main,
  .chisto-cta { padding-left: 20px; padding-right: 20px; }
  .chisto-crumb { padding-left: 20px; padding-right: 20px; }
}