/* =========================================================
   Références — timeline éditoriale (dossiers expansibles)
   ========================================================= */

.kc-refs {
    --kc-refs-focus: rgba(198, 168, 93, 0.45);
    padding: clamp(4.5rem, 8vw, 7rem) 0;
    background: #FFFFFF;
    font-family: var(--kc-font);
    color: var(--kc-text);
}

.kc-refs__container {
    width: 100%;
    max-width: var(--kc-container);
    margin-inline: auto;
    padding-inline: 24px;
}

.kc-refs__header {
    text-align: center;
    margin: 0 0 clamp(2.25rem, 4vw, 3.25rem);
}

.kc-refs__title {
    margin: 0;
    color: var(--kc-ink);
    font-size: clamp(1.85rem, 3vw, 2.6rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.kc-refs__title::after {
    content: "";
    display: block;
    width: 52px;
    height: 3px;
    margin: 1rem auto 0;
    border-radius: 3px;
    background: var(--kc-gold);
}

/* ---------- Timeline ---------- */
.kc-refs__list {
    position: relative;
    display: grid;
    gap: 0.9rem;
    margin: 0;
    padding: 0 0 0 0;
    list-style: none;
    max-width: 920px;
    margin-inline: auto;
}

.kc-refs__list::before {
    content: "";
    position: absolute;
    left: 1.35rem;
    top: 1.5rem;
    bottom: 1.5rem;
    width: 1px;
    background: linear-gradient(
        180deg,
        rgba(198, 168, 93, 0.55) 0%,
        rgba(15, 27, 45, 0.08) 100%
    );
    pointer-events: none;
}

.kc-refs__item {
    position: relative;
    margin: 0;
    padding-left: 3.25rem;
}

.kc-refs__marker {
    position: absolute;
    left: 0.85rem;
    top: 1.45rem;
    z-index: 1;
    width: 1.05rem;
    height: 1.05rem;
    border-radius: 50%;
    border: 2px solid var(--kc-gold);
    background: #fff;
    box-shadow: 0 0 0 4px #fff;
    transition:
        background-color var(--kc-duration) var(--kc-ease),
        transform var(--kc-duration) var(--kc-ease);
}

.kc-refs__item.is-open .kc-refs__marker {
    background: var(--kc-gold);
    transform: scale(1.12);
}

.kc-refs__card {
    border: 1px solid var(--kc-border);
    border-radius: var(--kc-radius-md);
    background: #FAFAF7;
    overflow: hidden;
    transition:
        border-color var(--kc-duration) var(--kc-ease),
        box-shadow var(--kc-duration) var(--kc-ease),
        background-color var(--kc-duration) var(--kc-ease);
}

.kc-refs__item.is-open .kc-refs__card {
    background: #fff;
    border-color: rgba(198, 168, 93, 0.45);
    box-shadow: var(--kc-shadow-md);
}

.kc-refs__trigger {
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr) auto;
    align-items: start;
    gap: 0.85rem 1.1rem;
    width: 100%;
    margin: 0;
    padding: 1.25rem 1.35rem;
    border: 0;
    background: transparent;
    color: inherit;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    transition: background-color 0.2s ease;
}

.kc-refs__trigger:hover {
    background: rgba(198, 168, 93, 0.05);
}

.kc-refs__trigger:focus,
.kc-refs__trigger:focus-visible {
    outline: none;
    box-shadow: none;
}

.kc-refs__trigger:focus-visible {
    box-shadow: inset 0 0 0 2px var(--kc-refs-focus);
}

.kc-refs__index {
    color: var(--kc-gold);
    font-size: clamp(1.35rem, 2vw, 1.65rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.04em;
    font-variant-numeric: tabular-nums;
    padding-top: 0.15rem;
}

.kc-refs__main {
    min-width: 0;
    display: grid;
    gap: 0.55rem;
}

.kc-refs__name {
    margin: 0;
    color: var(--kc-ink);
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -0.015em;
}

.kc-refs__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem 0.85rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.kc-refs__meta-item {
    display: inline-flex;
    align-items: baseline;
    gap: 0.35rem;
    color: #4A5568;
    font-size: 0.86rem;
    line-height: 1.35;
}

.kc-refs__meta-label {
    color: var(--kc-gold-700);
    font-size: 0.68rem;
    font-weight: 650;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.kc-refs__meta-value {
    font-weight: 500;
    color: var(--kc-ink);
}

.kc-refs__action {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    align-self: center;
    flex-shrink: 0;
    color: var(--kc-gold-700);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.kc-refs__action-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.85rem;
    height: 1.85rem;
    border-radius: 50%;
    border: 1px solid rgba(198, 168, 93, 0.4);
    font-size: 0.8rem;
    transition:
        transform var(--kc-duration) var(--kc-ease),
        background-color var(--kc-duration) var(--kc-ease),
        border-color var(--kc-duration) var(--kc-ease),
        color var(--kc-duration) var(--kc-ease);
}

.kc-refs__item.is-open .kc-refs__action-icon {
    transform: rotate(45deg);
    background: var(--kc-gold);
    border-color: var(--kc-gold);
    color: #fff;
}

.kc-refs__action-text {
    display: none;
}

@media (min-width: 768px) {
    .kc-refs__action-text {
        display: inline;
    }

    .kc-refs__item.is-open .kc-refs__action-text--open {
        display: none;
    }

    .kc-refs__action-text--close {
        display: none;
    }

    .kc-refs__item.is-open .kc-refs__action-text--close {
        display: inline;
    }
}

/* ---------- Panel ---------- */
.kc-refs__panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.38s var(--kc-ease);
}

.kc-refs__item.is-open .kc-refs__panel {
    grid-template-rows: 1fr;
}

.kc-refs__panel-inner {
    overflow: hidden;
    min-height: 0;
}

.kc-refs__details {
    margin: 0;
    padding: 0 1.35rem 1.45rem  calc(3rem + 1.1rem);
    border-top: 1px solid rgba(15, 27, 45, 0.07);
}

.kc-refs__mission {
    margin: 0;
    padding-top: 1.2rem;
}

.kc-refs__label {
    display: block;
    margin: 0 0 0.45rem;
    color: var(--kc-gold-700);
    font-size: 0.7rem;
    font-weight: 650;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.kc-refs__desc {
    margin: 0;
    max-width: 46rem;
    color: #3D4A5C;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.75;
}

/* Reveal */
.kc-refs .kc-reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.7s var(--kc-ease), transform 0.7s var(--kc-ease);
}

.kc-refs .kc-reveal.is-visible {
    opacity: 1;
    transform: none;
}

@media (max-width: 767.98px) {
    .kc-refs__container {
        padding-inline: 20px;
    }

    .kc-refs__list::before {
        left: 0.7rem;
    }

    .kc-refs__item {
        padding-left: 2.1rem;
    }

    .kc-refs__marker {
        left: 0.25rem;
        top: 1.35rem;
        width: 0.95rem;
        height: 0.95rem;
    }

    .kc-refs__trigger {
        grid-template-columns: 2.35rem minmax(0, 1fr) auto;
        gap: 0.55rem 0.75rem;
        padding: 1.05rem 1rem;
    }

    .kc-refs__index {
        font-size: 1.2rem;
    }

    .kc-refs__details {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .kc-refs__name {
        font-size: 0.95rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .kc-refs__card,
    .kc-refs__marker,
    .kc-refs__action-icon,
    .kc-refs__panel,
    .kc-refs .kc-reveal {
        transition: none;
    }

    .kc-refs .kc-reveal {
        opacity: 1;
        transform: none;
    }
}