/* =========================================================
   À propos — refonte 2026 (CGT Alkor)
   Timeline « notre histoire » + mission + valeurs + bannières média.
   Réutilise project.css (hero) et le design system.
   ========================================================= */

/* ---------- Notre histoire ---------- */
.about-story { padding-top: clamp(40px, 7vw, 76px); }
.about-story-head { max-width: 60ch; margin-bottom: clamp(28px, 5vw, 48px); }
.about-story-lead {
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.12;
  margin: 10px 0 0;
}

/* Timeline */
.about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.about-step {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  padding-bottom: clamp(28px, 4vw, 44px);
}
.about-step[data-reveal] { transition-delay: calc(var(--reveal-i, 0) * 0.06s); }
/* Ligne verticale reliant les marqueurs */
.about-step::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 44px;
  bottom: -4px;
  width: 1px;
  background: linear-gradient(180deg, rgba(97, 177, 188, 0.5), var(--hairline) 70%, transparent);
}
.about-step:last-child::before { display: none; }
.about-step-marker {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(97, 177, 188, 0.4);
  background:
    radial-gradient(120% 120% at 30% 20%, rgba(97, 177, 188, 0.18), transparent 60%),
    var(--bg-elev);
  font-family: var(--serif);
  font-style: italic;
  font-size: 19px;
  color: var(--accent-soft);
}
.about-step-body { padding-top: 4px; }
.about-step-kicker {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 6px;
}
.about-step-title {
  font-family: var(--serif);
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0;
}
.about-step-desc {
  margin: 10px 0 0;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.72;
  max-width: 64ch;
}

/* ---------- Bannières média plein cadre ---------- */
.about-banner {
  position: relative;
  height: clamp(280px, 46vw, 540px);
  overflow: hidden;
  isolation: isolate;
}
.about-banner-frame {
  position: absolute;
  inset: -10% 0;
  height: 120%;
}
.about-banner-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- Mission ---------- */
.about-mission {
  text-align: center;
}
.about-mission .eyebrow { display: inline-block; margin-bottom: 16px; }
.about-mission-statement {
  font-family: var(--serif);
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  max-width: 22ch;
  margin: 0 auto;
  color: var(--text);
}
@media (min-width: 760px) {
  .about-mission-statement { max-width: 28ch; }
}

/* ---------- Valeurs ---------- */
.about-values {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.about-value {
  padding: clamp(22px, 3vw, 30px);
  border-radius: var(--r-md);
  border: 1px solid var(--hairline);
  background:
    linear-gradient(165deg, rgba(255, 255, 255, 0.03) 0%, transparent 55%),
    linear-gradient(165deg, rgba(14, 58, 102, 0.2) 0%, rgba(8, 44, 82, 0.4) 100%);
  box-shadow: var(--shadow-1);
  transition: border-color 0.3s var(--ease-out), transform 0.45s var(--ease-luxe);
}
.about-value[data-reveal] { transition-delay: calc(var(--reveal-i, 0) * 0.07s); }
.about-value:hover {
  border-color: rgba(97, 177, 188, 0.34);
  transform: translateY(-4px);
}
.about-value-ic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: var(--r-sm);
  background: rgba(97, 177, 188, 0.12);
  border: 1px solid rgba(97, 177, 188, 0.22);
  margin-bottom: 18px;
}
.about-value-ic img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  display: block;
}
.about-value-title {
  font-family: var(--serif);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 500;
  line-height: 1.14;
  margin: 0 0 10px;
}
.about-value-desc {
  margin: 0;
  color: var(--text-2);
  font-size: 14.5px;
  line-height: 1.7;
}

/* ---------- Desktop ---------- */
@media (min-width: 760px) {
  .about-step { grid-template-columns: 64px 1fr; gap: 24px; }
  .about-step::before { left: 31px; }
  .about-values { grid-template-columns: repeat(3, 1fr); gap: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .about-banner-frame { inset: 0; height: 100%; transform: none !important; }
}