/**
 * Timeline Histoire — front (section Notre Histoire)
 */

.th-timeline {
    --th-ink: #0c121c;
    --th-muted: #627176;
    --th-line: #dce4e4;
    --th-paper: #ffffff;
    --th-accent: #126a97;
    --th-red: #d94036;
    --th-max: 960px;

    position: relative;
    max-width: var(--th-max);
    margin: 0 auto;
    padding: clamp(40px, 6vw, 72px) 20px;
    color: var(--th-ink);
    font-family: "Fira Sans", "Trebuchet MS", sans-serif;
}

.th-timeline__header {
    text-align: center;
    margin-bottom: clamp(36px, 5vw, 56px);
}

.th-timeline__title {
    margin: 0;
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    line-height: 1.15;
    color: var(--th-ink);
}

.th-timeline__title em {
    font-style: normal;
    color: var(--th-red);
}

.th-timeline__subtitle {
    margin: 14px 0 0;
    color: var(--th-muted);
    font-size: clamp(15px, 1.6vw, 18px);
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.th-timeline__track {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.th-timeline__track::before {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 8px;
    left: 18px;
    width: 2px;
    background: linear-gradient(
        180deg,
        transparent 0%,
        var(--th-accent) 8%,
        var(--th-accent) 92%,
        transparent 100%
    );
    opacity: 0.35;
}

.th-timeline--alternating .th-timeline__track::before {
    left: 50%;
    transform: translateX(-50%);
}

.th-timeline__item {
    position: relative;
    display: grid;
    grid-template-columns: 36px 1fr;
    gap: 16px;
    padding: 18px 0;
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.th-timeline__item.is-visible {
    opacity: 1;
    transform: none;
}

.th-timeline__marker {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.th-timeline__dot {
    display: block;
    width: var(--th-dot-size, 14px);
    height: var(--th-dot-size, 14px);
    border-radius: 50%;
    background: var(--th-dot-color, var(--th-accent));
    box-shadow: 0 0 0 var(--th-dot-halo-size, 5px) color-mix(in srgb, var(--th-dot-color, var(--th-accent)) 15%, transparent);
}

.th-timeline--no-halo .th-timeline__dot {
    box-shadow: none;
}

.th-timeline__card {
    min-width: 0;
    padding: var(--th-card-padding, 18px 20px);
    background: var(--th-card-bg, var(--th-paper));
    border: var(--th-card-border-w, 1px) solid var(--th-card-border, var(--th-line));
    border-radius: var(--th-card-radius, 14px);
    box-shadow: var(--th-card-shadow, 0 8px 24px rgba(12, 18, 28, 0.04));
    transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.th-timeline__item:hover .th-timeline__card {
    border-color: color-mix(in srgb, var(--th-accent) 35%, var(--th-card-border, var(--th-line)));
    box-shadow: 0 12px 28px rgba(12, 18, 28, 0.08);
    transform: translateY(-2px);
}

.th-timeline--shadow-none .th-timeline__item:hover .th-timeline__card {
    box-shadow: none;
}

.th-timeline__year {
    display: inline-block;
    margin: 0 0 8px;
    color: var(--th-year-color, var(--th-accent));
    font-size: var(--th-year-size, 28px);
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1;
}

.th-timeline__item-title {
    margin: 0 0 8px;
    font-size: var(--th-item-title-size, 16px);
    font-weight: 650;
    color: var(--th-item-title, var(--th-ink));
}

.th-timeline__content {
    color: var(--th-item-text, var(--th-muted));
    font-size: var(--th-item-text-size, 15px);
    line-height: 1.55;
}

.th-timeline__content p {
    margin: 0 0 0.55em;
}

.th-timeline__content p:last-child {
    margin-bottom: 0;
}

@media (min-width: 900px) {
    .th-timeline--alternating .th-timeline__item {
        grid-template-columns: 1fr 40px 1fr;
        gap: 0 20px;
        align-items: start;
    }

    .th-timeline--alternating .th-timeline__marker {
        grid-column: 2;
        grid-row: 1;
    }

    .th-timeline--alternating .th-timeline__item--left .th-timeline__card {
        grid-column: 1;
        grid-row: 1;
        text-align: right;
    }

    .th-timeline--alternating .th-timeline__item--right .th-timeline__card {
        grid-column: 3;
        grid-row: 1;
        text-align: left;
    }

    .th-timeline--alternating .th-timeline__item--left .th-timeline__marker,
    .th-timeline--alternating .th-timeline__item--right .th-timeline__marker {
        justify-content: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    .th-timeline__item {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .th-timeline__item:hover .th-timeline__card {
        transform: none;
    }
}

/* ========== Orientation horizontale ========== */
.th-timeline--horizontal {
    --th-max: 100%;
    max-width: 100%;
    padding-left: 0;
    padding-right: 0;
}

.th-timeline--horizontal .th-timeline__header {
    padding-left: 20px;
    padding-right: 20px;
}

.th-timeline--horizontal .th-timeline__track {
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 28px 24px 20px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

/* Scroll normal */
.th-timeline--horizontal.th-timeline--scroll-normal .th-timeline__track {
    scroll-snap-type: none;
}

/* Carousel : snap + nav */
.th-timeline--horizontal.th-timeline--scroll-carousel .th-timeline__track {
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    scrollbar-width: none;
}

.th-timeline--horizontal.th-timeline--scroll-carousel .th-timeline__track::-webkit-scrollbar {
    display: none;
}

/* Désactiver l’ancienne ligne ::before (limitée à la largeur visible). */
.th-timeline--horizontal .th-timeline__track::before {
    display: none;
}

/* Ligne dédiée : largeur syncée en JS sur toute la piste scrollable. */
.th-timeline--horizontal .th-timeline__line {
    position: absolute;
    left: 0;
    top: 34px;
    width: 100%;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--th-accent) 1%,
        var(--th-accent) 99%,
        transparent 100%
    );
    opacity: 0.45;
    pointer-events: none;
    z-index: 0;
}

.th-timeline--horizontal .th-timeline__item {
    flex: 0 0 min(320px, 82vw);
    width: min(320px, 82vw);
    min-width: min(320px, 82vw);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    padding: 0 12px 8px;
    scroll-snap-align: start;
    transform: translateX(18px);
}

.th-timeline--horizontal .th-timeline__item.is-visible {
    transform: none;
}

.th-timeline--horizontal .th-timeline__marker {
    padding-top: 0;
    order: 0;
    position: relative;
    z-index: 1;
}

.th-timeline--horizontal .th-timeline__card {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
    text-align: left;
    order: 1;
}

/* Disposition alignée (dessous) — horizontale */
.th-timeline--horizontal.th-timeline--left .th-timeline__track {
    align-items: flex-start;
}

.th-timeline--horizontal.th-timeline--left .th-timeline__line {
    top: 34px;
    transform: none;
}

.th-timeline--horizontal.th-timeline--left .th-timeline__item {
    flex-direction: column;
}

.th-timeline--horizontal.th-timeline--left .th-timeline__marker {
    order: 0;
}

.th-timeline--horizontal.th-timeline--left .th-timeline__card {
    order: 1;
}

/* Disposition alternée (haut / bas) — horizontale */
.th-timeline--horizontal.th-timeline--alternating .th-timeline__track {
    align-items: stretch;
    padding-top: 12px;
    padding-bottom: 12px;
    min-height: 420px;
}

.th-timeline--horizontal.th-timeline--alternating .th-timeline__line {
    top: 50%;
    transform: translateY(-50%);
}

.th-timeline--horizontal.th-timeline--alternating .th-timeline__item {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: 1fr auto 1fr;
    align-items: center;
    justify-items: stretch;
    min-height: 400px;
    gap: 0;
    padding-top: 8px;
    padding-bottom: 8px;
}

.th-timeline--horizontal.th-timeline--alternating .th-timeline__marker {
    grid-row: 2;
    grid-column: 1;
    justify-self: center;
    order: unset;
    padding: 0;
}

.th-timeline--horizontal.th-timeline--alternating .th-timeline__item--left .th-timeline__card {
    grid-row: 1;
    grid-column: 1;
    align-self: end;
    justify-self: stretch;
    width: 100%;
    margin-bottom: 14px;
    order: unset;
    text-align: left;
}

.th-timeline--horizontal.th-timeline--alternating .th-timeline__item--right .th-timeline__card {
    grid-row: 3;
    grid-column: 1;
    align-self: start;
    justify-self: stretch;
    width: 100%;
    margin-top: 14px;
    order: unset;
    text-align: left;
}

.th-timeline--horizontal .th-timeline__item:hover .th-timeline__card {
    transform: translateY(-3px);
}

.th-timeline--horizontal .th-timeline__more-wrap {
    padding: 0 20px;
}

/* Carousel navigation */
.th-timeline__carousel {
    position: relative;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    align-items: center;
    gap: 4px;
    padding: 0 8px;
}

.th-timeline__carousel .th-timeline__track {
    grid-column: 2;
    min-width: 0;
}

.th-timeline__nav {
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid color-mix(in srgb, var(--th-accent) 30%, #dce4e4);
    border-radius: 50%;
    background: #fff;
    color: var(--th-accent);
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    z-index: 2;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.th-timeline__nav:hover:not(:disabled) {
    background: color-mix(in srgb, var(--th-accent) 10%, #fff);
    border-color: var(--th-accent);
}

.th-timeline__nav:disabled {
    opacity: 0.35;
    cursor: default;
}

.th-timeline__nav span {
    display: block;
    margin-top: -2px;
}

@media (max-width: 639px) {
    .th-timeline__carousel {
        grid-template-columns: 36px minmax(0, 1fr) 36px;
        padding: 0 4px;
    }

    .th-timeline__nav {
        width: 34px;
        height: 34px;
        font-size: 24px;
    }

    .th-timeline--horizontal.th-timeline--alternating .th-timeline__track,
    .th-timeline--horizontal.th-timeline--alternating .th-timeline__item {
        min-height: 340px;
    }
}

/* Limites responsive + bouton Voir plus */
.th-timeline__item.is-device-hidden {
    display: none !important;
}

.th-timeline__more-wrap {
    display: flex;
    justify-content: center;
    margin-top: 28px;
}

.th-timeline__more {
    appearance: none;
    border: 1px solid color-mix(in srgb, var(--th-accent) 35%, #dce4e4);
    border-radius: 999px;
    padding: 12px 22px;
    background: #fff;
    color: var(--th-accent);
    font: inherit;
    font-size: 14px;
    font-weight: 650;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.th-timeline__more:hover {
    background: color-mix(in srgb, var(--th-accent) 10%, #fff);
    border-color: var(--th-accent);
    transform: translateY(-1px);
}

.th-timeline--no-anim .th-timeline__item {
    opacity: 1;
    transform: none;
    transition: none;
}

/* Mode compact mobile */
@media (max-width: 639px) {
    .th-timeline--compact-mobile {
        padding-top: 28px;
        padding-bottom: 36px;
    }

    .th-timeline--compact-mobile .th-timeline__header {
        margin-bottom: 28px;
    }

    .th-timeline--compact-mobile .th-timeline__title {
        font-size: 24px;
    }

    .th-timeline--compact-mobile .th-timeline__subtitle {
        font-size: 13px;
    }

    .th-timeline--compact-mobile .th-timeline__item {
        padding: 10px 0;
        gap: 12px;
    }

    .th-timeline--compact-mobile .th-timeline__card {
        padding: 14px 14px;
        border-radius: 12px;
    }

    .th-timeline--compact-mobile .th-timeline__year {
        font-size: 20px;
        margin-bottom: 6px;
    }

    .th-timeline--compact-mobile .th-timeline__content {
        font-size: 14px;
    }
}