/* Shortcode [timeline] — timeline verticale numérotée */

.flip-timeline {
    --flip-tl-badge: 32px;
    --flip-tl-gap: 24px;          /* gap horizontal badge ↔ carte */
    --flip-tl-row-gap: 16px;      /* gap vertical entre étapes */
    --flip-tl-line: 2px;
    --flip-tl-active: #0076FF;
    --flip-tl-inactive: #C7D2E0;

    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--flip-tl-row-gap);
}

.flip-timeline__step {
    position: relative;
    display: grid;
    grid-template-columns: var(--flip-tl-badge) 1fr;
    gap: var(--flip-tl-gap);
    align-items: start;
    margin: 0;
    padding: 0;
}

/* Ligne verticale portée par chaque étape (sauf la dernière).
   ::before = trait gris de base.
   ::after  = trait bleu qui se déploie de haut en bas quand l'étape est active. */
.flip-timeline__step:not(:last-child)::before,
.flip-timeline__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: calc(var(--flip-tl-badge) / 2);
    bottom: calc(-1 * (var(--flip-tl-row-gap) + var(--flip-tl-badge) / 2));
    left: calc(var(--flip-tl-badge) / 2 - var(--flip-tl-line) / 2);
    width: var(--flip-tl-line);
    z-index: 0;
}

.flip-timeline__step:not(:last-child)::before {
    background: var(--flip-tl-inactive);
}

.flip-timeline__step:not(:last-child)::after {
    background: var(--flip-tl-active);
    transform: scaleY(0);
    transform-origin: top center;
    transition: transform 0.5s ease;
}

.flip-timeline__step.is-active:not(:last-child)::after {
    transform: scaleY(1);
}

@media (prefers-reduced-motion: reduce) {
    .flip-timeline__step:not(:last-child)::after {
        transition: none;
    }
}

.flip-timeline__marker {
    position: relative;
    width: var(--flip-tl-badge);
    height: var(--flip-tl-badge);
    z-index: 1;
}

.flip-timeline__badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    border-radius: 6px;
    background: var(--flip-tl-inactive);
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
    line-height: 1;
    transition: background-color 0.4s ease, transform 0.4s ease;
}

/* État actif : badge bleu plein. Géré par le JS au scroll. */
.flip-timeline__step.is-active .flip-timeline__badge {
    background: var(--flip-tl-active);
    transform: scale(1.05);
}

/* Carte à droite */
.flip-timeline__card {
    background: #fff;
    border: 1px solid rgb(0 118 255 / 0.1);
    border-radius: 12px;
    padding: clamp(16px, 2vw, 24px);
    color: #1f2937;
}

.flip-timeline__title {
    margin: 0 0 0.5rem;
    color: inherit;
}

.flip-timeline__text {
    margin: 0;
    line-height: 1.5;
    color: #4b5563;
}

@media (prefers-reduced-motion: reduce) {
    .flip-timeline__badge {
        transition: none;
    }
}