/* ═══════════════════════════════════════════════════════════════
   Composant : Timeline des rentrées
   ═══════════════════════════════════════════════════════════════ */

/* ── Section ─────────────────────────────────────────────────── */
.ldnr-timeline-section {
  position: relative;
  z-index: 2;
  padding: 3rem 3rem 4rem;
  background: transparent;
  overflow: hidden;
}

/* position:relative pour que la card se positionne ici */
.ldnr-timeline-inner {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
}

/* ── Header ──────────────────────────────────────────────────── */
.ldnr-section-eyebrow {
  font-family: var(--font-ui);
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.1rem;
}

.ldnr-timeline-section h2 {
  font-family: var(--font-ui);
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin: 0 0 .9rem;
  text-transform: none !important;
}

.ldnr-timeline-section h2 em {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.ldnr-timeline-desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-bottom: 3.5rem;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-family: var(--font-ui) !important;
}

/* ── Barre supérieure (AFFICHER TOUT) ───────────────────────── */
.ldnr-timeline-topbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-bottom: 1rem;
}

.ldnr-timeline-all {
  font-family: var(--font-ui);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: color .2s;
}
.ldnr-timeline-all:hover { color: var(--color-accent); }

/* ════════════════════════════════════════════
   DESKTOP — Timeline horizontale
   ════════════════════════════════════════════ */

.ldnr-timeline__empty {
  margin: 3rem 0;
  color: var(--color-text-muted);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-style: italic;
  text-align: center;
}

.ldnr-timeline__track {
  position: relative;
  display: flex;
  align-items: center;
  margin: 7rem 0 3rem;
  min-width: 600px;
}

/* ── Ligne — apparition en premier, tracée de gauche à droite ───
   Élément réel (.ldnr-timeline__line) plutôt qu'un ::before : plus simple
   à animer indépendamment sans se battre avec le translateY(-50%) de
   centrage. Déclenché par timeline.js (IntersectionObserver) via .is-in,
   puis les dots suivent en cascade (voir plus bas). */
.ldnr-timeline__line {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform-origin: left center;
  transform: translateY(-50%) scaleX(0);
  transition: transform .9s cubic-bezier(.16,1,.3,1);
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--color-accent) 0%, transparent),
    color-mix(in srgb, var(--color-accent) 70%, transparent) 10%,
    var(--color-accent) 50%,
    color-mix(in srgb, var(--color-accent) 50%, transparent) 90%,
    color-mix(in srgb, var(--color-accent) 0%, transparent)
  );
  border-radius: 2px;
  pointer-events: none;
}
.ldnr-timeline__track.is-in .ldnr-timeline__line {
  transform: translateY(-50%) scaleX(1);
}

/* ── Dots — apparaissent un par un après la ligne (délai posé en JS) ── */
.ldnr-timeline__dot {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .5s cubic-bezier(.16,1,.3,1), transform .5s cubic-bezier(.16,1,.3,1);
}
.ldnr-timeline__dot.is-in {
  opacity: 1;
  transform: none;
}

/* ── Dot ─────────────────────────────────────────────────────── */
.ldnr-timeline__dot {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline: none;
}

.ldnr-timeline__dot-anchor {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%; /* hérite du flex:1 du dot → contrainte les labels absolus */
}

/* ── Ring ────────────────────────────────────────────────────── */
.ldnr-timeline__ring {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--card-accent, var(--color-accent));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--card-accent, var(--color-accent)) 22%, transparent);
  transition: transform .3s cubic-bezier(.2, .8, .2, 1);
  will-change: transform;
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

/* Glow via opacity — pas de box-shadow blur animé (no repaint) */
.ldnr-timeline__ring::after {
  content: '';
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--card-accent, var(--color-accent)) 0%, transparent 68%);
  opacity: 0;
  transition: opacity .3s ease;
  pointer-events: none;
}

.ldnr-timeline__dot.is-active .ldnr-timeline__ring {
  transform: scale(1.7);
}
.ldnr-timeline__dot.is-active .ldnr-timeline__ring::after {
  opacity: 0.55;
}

/* ── Focus ring RGAA — visible uniquement au clavier ─────────── */
.ldnr-timeline__dot:focus-visible .ldnr-timeline__ring {
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--card-accent, var(--color-accent)) 22%, transparent),
    0 0 0 6px var(--card-accent, var(--color-accent)),
    0 0 0 9px color-mix(in srgb, var(--card-accent, var(--color-accent)) 28%, transparent);
}

/* ── Labels desktop — absolus, ancrés sur le ring ───────────── */
.dot-date {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  max-width: 100%;
  white-space: normal;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 9.5px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  pointer-events: none;
  user-select: none;
}

.dot-name {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  max-width: 100%;
  white-space: normal;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  color: var(--card-accent, var(--color-accent));
  letter-spacing: -.01em;
  pointer-events: none;
  user-select: none;
}

/* ── Card partagée — positionnée par JS en position fixed (viewport) */
.ldnr-timeline__card {
  position: fixed;
  width: 264px;
  background: color-mix(in srgb, var(--color-surface, #0d0c15) 97%, var(--card-accent, var(--color-accent)));
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--color-accent)) 28%, transparent);
  border-radius: 16px;
  padding: 18px 20px 16px;
  box-shadow:
    0 24px 60px rgba(0, 0, 0, .4),
    0 0 0 1px color-mix(in srgb, var(--card-accent, var(--color-accent)) 10%, transparent);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 18px)) translateY(8px);
  transition: opacity .2s ease, transform .2s ease;
  will-change: opacity, transform;
  z-index: 9999;
}

/* Flèche vers le bas (card au-dessus du ring) */
.ldnr-timeline__card::after {
  content: '';
  position: absolute;
  top: 100%;
  left: var(--arrow-x, 50%);
  transform: translateX(-50%);
  border: 7px solid transparent;
  border-top-color: color-mix(in srgb, var(--card-accent, var(--color-accent)) 35%, transparent);
  pointer-events: none;
}

.ldnr-timeline__card.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, calc(-100% - 18px)) translateY(0);
}

/* Flip : card en-dessous du ring */
.ldnr-timeline__card.flip-down {
  transform: translate(-50%, 18px) translateY(-8px);
}
.ldnr-timeline__card.flip-down.is-visible {
  transform: translate(-50%, 18px) translateY(0);
}
.ldnr-timeline__card.flip-down::after {
  top: auto;
  bottom: 100%;
  border-top-color: transparent;
  border-bottom-color: color-mix(in srgb, var(--card-accent, var(--color-accent)) 35%, transparent);
}

/* ── Contenu de la card ──────────────────────────────────────── */
.card-title {
  font-family: var(--font-ui);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 12px;
  text-transform: none !important;
  letter-spacing: -.01em;
}

.card-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
  margin-bottom: 14px;
}

.card-meta-item { display: flex; flex-direction: column; gap: 2px; }

.meta-label {
  font-family: var(--font-ui);
  font-size: 9px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.meta-value {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--color-text);
  text-transform: none !important;
  letter-spacing: normal;
}

.card-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--card-accent, var(--color-accent)) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--color-accent)) 32%, transparent);
  color: var(--card-accent, var(--color-accent));
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, border-color .2s;
  width: 100%;
  letter-spacing: .04em;
}
.card-cta:hover {
  background: color-mix(in srgb, var(--card-accent, var(--color-accent)) 24%, transparent);
  text-decoration: none;
}
.card-cta:focus-visible {
  outline: 2px solid var(--card-accent, var(--color-accent));
  outline-offset: 3px;
}

/* ── Inline card (mobile accordéon) — caché sur desktop ─────── */
.ldnr-timeline__dot-card-wrap { display: none; }

/* ── Light mode ──────────────────────────────────────────────── */
[data-theme="light"] .ldnr-timeline-section {
  border-top-color: var(--color-nav-border);
}
[data-theme="light"] .ldnr-timeline__card {
  background: color-mix(in srgb, #f0f4ff 97%, var(--card-accent, var(--color-accent)));
  box-shadow:
    0 20px 50px rgba(0, 0, 0, .10),
    0 0 0 1px color-mix(in srgb, var(--card-accent, var(--color-accent)) 18%, transparent);
}

/* ════════════════════════════════════════════
   MOBILE — Timeline verticale
   ════════════════════════════════════════════ */
@media (max-width: 768px) {

  /* Section : overflow visible pour que la card ne soit pas clippée */
  .ldnr-timeline-section {
    padding: 4rem 1.5rem 5rem;
    overflow: visible;
  }

  /* Wrap : on supprime le scroll horizontal (plus de timeline horizontale) */
  .ldnr-timeline-wrap {
    overflow: visible;
  }

  /* ── Track vertical ────────────────────────────────────────── */
  .ldnr-timeline__track {
    flex-direction: column;
    align-items: stretch;
    min-width: unset;
    margin: 1.5rem 0 2rem;
    padding-left: 32px; /* espace pour la ligne + ring */
    gap: 32px;
  }

  /*
   * Ligne verticale.
   * Ring center X = padding-left (32px) + ring_radius (7px) = 39px depuis le bord gauche du track.
   * Ligne : left 38px, largeur 2px → centre à 39px. ✓
   * Tracée de haut en bas (transform-origin: top) au lieu de gauche à droite.
   */
  .ldnr-timeline__line {
    left: 38px;
    top: 0;
    bottom: 0;
    right: auto;
    width: 2px;
    height: auto;
    transform-origin: top center;
    transform: scaleY(0);
    background: linear-gradient(
      180deg,
      color-mix(in srgb, var(--color-accent) 0%, transparent),
      color-mix(in srgb, var(--color-accent) 70%, transparent) 10%,
      var(--color-accent) 50%,
      color-mix(in srgb, var(--color-accent) 50%, transparent) 90%,
      color-mix(in srgb, var(--color-accent) 0%, transparent)
    );
  }
  .ldnr-timeline__track.is-in .ldnr-timeline__line {
    transform: scaleY(1);
  }

  /* Dots mobile : glissent depuis la gauche (aligné avec la ligne verticale) */
  .ldnr-timeline__dot {
    transform: translateX(-10px);
  }
  .ldnr-timeline__dot.is-in {
    transform: none;
  }

  /* ── Dot mobile — rangée ring + labels ─────────────────────── */
  .ldnr-timeline__dot {
    flex: none;
    display: block; /* on gère le layout via l'anchor en grid */
    width: 100%;
  }

  /*
   * Anchor : grille 2 colonnes.
   * Col 1 (14px) : ring, s'étend sur les 2 rangées.
   * Col 2 (reste) : dot-date (rangée 1) + dot-name (rangée 2).
   */
  .ldnr-timeline__dot-anchor {
    display: grid;
    grid-template-columns: 14px 1fr;
    grid-template-rows: auto auto;
    column-gap: 16px;
    row-gap: 3px;
    align-items: center;
  }

  /* Ring : col 1, couvre les 2 rangées */
  .ldnr-timeline__ring {
    grid-column: 1;
    grid-row: 1 / 3;
    align-self: center;
    justify-self: center;
  }

  /* Labels : sortis du flux absolu, placés dans la grille */
  .dot-date {
    position: static;
    transform: none;
    bottom: auto;
    left: auto;
    white-space: normal;
    grid-column: 2;
    grid-row: 1;
    text-align: left;
    pointer-events: auto;
  }

  .dot-name {
    position: static;
    transform: none;
    top: auto;
    left: auto;
    white-space: normal;
    grid-column: 2;
    grid-row: 2;
    text-align: left;
    pointer-events: auto;
  }

  /* ── Card flottante : masquée sur mobile ───────────────────── */
  .ldnr-timeline__card { display: none !important; }

  /* ── Accordéon inline ───────────────────────────────────────── */

  /*
   * Technique grid-template-rows : 0fr → 1fr
   * Évite le calcul JS de hauteur et donne une animation fluide.
   */
  .ldnr-timeline__dot-card-wrap {
    display: grid;
    grid-template-rows: 0fr;
    overflow: hidden; /* clip le contenu pendant la transition grid */
    opacity: 0;
    visibility: hidden;
    transition: grid-template-rows 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.35s ease, visibility 0.35s ease;
    /* Indente au niveau du texte (ring 14px + gap 16px = 30px) */
    padding-left: 30px;
  }

  .ldnr-timeline__dot.is-active .ldnr-timeline__dot-card-wrap {
    grid-template-rows: 1fr;
    opacity: 1;
    visibility: visible;
  }

  .ldnr-timeline__dot-card {
    min-height: 0;
    /* Espace entre l'anchor et la card */
    padding-top: 12px;
    padding-bottom: 4px;
  }

  /* Boîte visuelle — bordure unique sur le conteneur pour éviter les artéfacts d'animation */
  .ldnr-timeline__dot-card > .card-title {
    background: color-mix(in srgb, var(--color-surface, #0d0c15) 97%, var(--card-accent, var(--color-accent)));
    border: 1px solid color-mix(in srgb, var(--card-accent, var(--color-accent)) 28%, transparent);
    border-bottom: none;
    border-radius: 12px 12px 0 0;
    padding: 14px 16px 10px;
    margin: 0;
  }

  .ldnr-timeline__dot-card > .card-meta {
    background: color-mix(in srgb, var(--color-surface, #0d0c15) 97%, var(--card-accent, var(--color-accent)));
    border: 1px solid color-mix(in srgb, var(--card-accent, var(--color-accent)) 28%, transparent);
    border-top: none;
    border-bottom: none;
    padding: 0 16px 10px;
    margin: 0;
  }

  .ldnr-timeline__dot-card > .card-cta {
    background: color-mix(in srgb, var(--color-surface, #0d0c15) 97%, var(--card-accent, var(--color-accent)));
    border: 1px solid color-mix(in srgb, var(--card-accent, var(--color-accent)) 28%, transparent);
    border-top: 1px solid color-mix(in srgb, var(--card-accent, var(--color-accent)) 15%, transparent);
    border-radius: 0 0 12px 12px;
    padding: 10px 16px 14px;
    margin: 0;
  }
}

/* ── Reduced motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .ldnr-timeline__ring,
  .ldnr-timeline__ring::after,
  .ldnr-timeline__card { transition: none !important; }

  .ldnr-timeline__line {
    transition: none !important;
    transform: translateY(-50%) scaleX(1) !important;
  }
  @media (max-width: 768px) {
    .ldnr-timeline__line { transform: scaleY(1) !important; }
  }
  .ldnr-timeline__dot {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ── Titres de formation : segment en <em> mis en valeur ──────
   Même convention que .hero__title em / .fiche-h2 em / .card__title em :
   le morceau significatif du titre passe en serif italique coloré.
   L'accent est celui de la formation (--card-accent, posé par timeline.js
   sur chaque point), avec repli sur l'accent global. */
.card-title em,
.dot-name em {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--card-accent, var(--color-accent));
}