/* ==========================================================================
   Composants de base — boutons, cards, header, footer
   ========================================================================== */

/* --- Boutons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: var(--border-width) solid transparent;
  transition: background-color var(--duration-base) var(--ease-standard),
    color var(--duration-base) var(--ease-standard), border-color var(--duration-base) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.btn:active {
  transform: translateY(1px);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-ink);
}
.btn--accent:hover {
  background: var(--color-accent-dark);
}

.btn--primary {
  background: var(--color-brand);
  color: var(--color-white);
}
.btn--primary:hover {
  background: var(--color-brand-dark);
}

.btn--outline {
  border-color: currentColor;
  color: var(--color-ink);
}
.btn--outline:hover {
  background: var(--color-bg-dark);
  color: var(--color-paper);
}

.btn--ghost-on-dark {
  border-color: var(--color-border-on-dark);
  color: var(--color-paper);
}
.btn--ghost-on-dark:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* --- Lien souligné (nav, liens inline) --- */
.link-underline {
  position: relative;
  padding-bottom: 2px;
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transition: right var(--duration-base) var(--ease-standard);
}
.link-underline:hover::after,
.link-underline:focus-visible::after {
  right: 0;
}

/* --- Lien retour --- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-label);
  color: var(--color-text-soft);
  transition: color var(--duration-fast) var(--ease-standard);
}
.back-link:hover,
.back-link:focus-visible {
  color: var(--color-brand);
}
.back-link__arrow {
  display: inline-block;
  transition: transform var(--duration-fast) var(--ease-standard);
}
.back-link:hover .back-link__arrow,
.back-link:focus-visible .back-link__arrow {
  transform: translateX(-3px);
}

.back-link--on-dark {
  color: var(--color-paper);
}
.back-link--on-dark:hover,
.back-link--on-dark:focus-visible {
  color: var(--color-accent);
}

/* --- Card réalisation / service --- */
.card {
  display: block;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--duration-base) var(--ease-standard);
}
.card:hover,
.card:focus-visible {
  box-shadow: var(--shadow-md);
}

.card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-paper-alt);
}
.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-standard);
}
.card:hover .card__media img,
.card:focus-visible .card__media img {
  transform: scale(1.1);
}

.card__body {
  padding: var(--space-5);
}

.card__eyebrow {
  color: var(--color-brand);
  margin-bottom: var(--space-2);
}

.card__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-demi);
}

/* --- Grille de cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-6);
}

/* --- Header --- */
.site-header {
  position: absolute;
  inset-inline: 0;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background-color var(--duration-base) var(--ease-standard), box-shadow var(--duration-base) var(--ease-standard);
}

.site-header.is-scrolled,
.site-header.is-solid {
  background: var(--color-bg-dark);
  box-shadow: var(--shadow-sm);
}
.site-header.is-scrolled .site-header__nav a,
.site-header.is-solid .site-header__nav a {
  color: var(--color-ink);
}

/* Pages réalisations professionnelles : pas de photo hero, l'en-tête garde
   le même fond que la page plutôt que le gris uni des autres pages "is-solid". */
.site-header.is-pro {
  background: var(--color-bg);
  box-shadow: none;
}

.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  width: 100%;
  padding-inline: var(--container-pad);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  color: var(--color-paper);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
}

.site-header__mark {
  height: 2.75rem;
  width: auto;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.site-header__nav a {
  color: var(--color-paper);
  font-size: var(--text-sm);
}

/* --- Toggle segmenté Professionnel / Particulier --- */
.univers-toggle {
  display: inline-flex;
  padding: 3px;
  border: var(--border-width) solid var(--color-border-on-dark);
  border-radius: var(--radius-full);
}

.univers-toggle a {
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-border-on-dark);
  border-radius: var(--radius-full);
  transition: background-color var(--duration-base) var(--ease-standard), color var(--duration-base) var(--ease-standard);
}

.univers-toggle a[aria-current="page"] {
  background: var(--color-accent);
  color: var(--color-ink);
}

/* --- Bouton hamburger (mobile) --- */
.header-burger {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
  /* Doit rester au-dessus du panneau de nav plein écran (z-overlay) une
     fois ouvert, sinon son icône (qui se transforme en croix) se retrouve
     masquée et impossible à toucher pour refermer le menu. */
  z-index: calc(var(--z-overlay) + 1);
}

.header-burger span {
  position: absolute;
  left: 0.5rem;
  right: 0.5rem;
  height: 2px;
  background: var(--color-paper);
  transition: transform var(--duration-base) var(--ease-standard), opacity var(--duration-base) var(--ease-standard);
}
.header-burger span:nth-child(1) {
  top: 0.85rem;
}
.header-burger span:nth-child(2) {
  top: 1.25rem;
}
.header-burger span:nth-child(3) {
  top: 1.65rem;
}
.header-burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(0.4rem) rotate(45deg);
}
.header-burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.header-burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-0.4rem) rotate(-45deg);
}

@media (max-width: 860px) {
  .header-burger {
    display: block;
  }
  .site-header__nav {
    position: fixed;
    inset: 0;
    top: 0;
    z-index: -1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-5);
    padding: var(--space-9) var(--container-pad);
    background: var(--color-bg-dark);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard),
      visibility 0s linear var(--duration-base);
  }
  .site-header__nav.is-open {
    z-index: var(--z-overlay);
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard);
  }
  .site-header__nav a {
    color: var(--color-ink);
  }
  .site-header__nav a,
  .site-header__nav .btn {
    font-size: var(--text-xl);
  }
}

/* --- Footer --- */
.site-footer {
  background: var(--color-bg);
  color: var(--color-ink);
  padding-block: var(--space-9) var(--space-6);
}

.site-footer a {
  color: var(--color-ink);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: var(--space-7);
  padding-bottom: var(--space-8);
  border-bottom: var(--border-width) solid var(--color-border);
}

.site-footer__heading {
  margin-bottom: var(--space-4);
  color: var(--color-brand);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-soft);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
}
.site-footer__legal .credit {
  color: var(--color-ink);
}
.site-footer__legal .credit a {
  color: #e67e22;
}

.social-row {
  display: flex;
  gap: var(--space-4);
}

/* --- Onglets dépliables (valeurs, expertise, FAQ…) --- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.accordion--row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: start;
}

@media (max-width: 860px) {
  .accordion--row {
    grid-template-columns: 1fr;
  }
}

.accordion-item {
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  overflow: hidden;
}

.accordion-item__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-6);
  cursor: pointer;
  list-style: none;
}
.accordion-item__summary::-webkit-details-marker {
  display: none;
}
.accordion-item__summary h3 {
  font-size: var(--text-xl);
  color: var(--color-brand);
}

.accordion-item__icon {
  flex-shrink: 0;
  font-size: var(--text-xl);
  color: var(--color-brand);
  transition: transform var(--duration-base) var(--ease-standard);
}
.accordion-item[open] .accordion-item__icon {
  transform: rotate(45deg);
}

.accordion-item__content {
  padding: 0 var(--space-6) var(--space-6);
}
.accordion-item__content p + p {
  margin-top: var(--space-4);
}

/* --- Bloc de différenciation (argumentaire vs. concurrence) --- */
.differentiator {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-8);
  align-items: start;
}

.differentiator__intro h2 {
  margin: var(--space-3) 0 var(--space-4);
}

.differentiator__intro p {
  color: var(--color-text-soft);
  font-size: var(--text-lg);
}

.differentiator__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.differentiator__item {
  padding-left: var(--space-5);
  border-left: 2px solid var(--color-accent);
}

.differentiator__item strong {
  display: block;
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--color-brand);
  margin-bottom: var(--space-1);
}

.differentiator__item span {
  color: var(--color-text-soft);
  font-size: var(--text-sm);
}

@media (max-width: 860px) {
  .differentiator {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* --- Sections --- */
.section {
  padding-block: var(--space-9);
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-paper);
}

.eyebrow {
  display: block;
  margin-bottom: var(--space-3);
  color: var(--color-brand);
}
.section--dark .eyebrow {
  color: var(--color-accent);
}

/* --- Bouton d'appel à l'action en fin de section --- */
.section-cta {
  margin-top: var(--space-6);
}

/* --- Formulaires --- */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.form label {
  display: block;
  margin-bottom: var(--space-2);
}

.form input,
.form textarea,
.form select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  font-family: var(--font-base);
  font-size: var(--text-base);
  transition: border-color var(--duration-fast) var(--ease-standard);
}

.form input:focus-visible,
.form textarea:focus-visible,
.form select:focus-visible {
  border-color: var(--color-brand);
}

.form textarea {
  min-height: 9rem;
  resize: vertical;
}

.form input[type="file"] {
  padding: var(--space-2);
  font-size: var(--text-sm);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 560px) {
  .form__row {
    grid-template-columns: 1fr;
  }
}

.form__submit {
  align-self: flex-start;
  margin-top: var(--space-2);
}

.form-status {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
}

.form-status[hidden] {
  display: none;
}

.form-status--success {
  background: var(--color-paper-alt);
  color: var(--color-brand);
}

.form-status--error {
  background: var(--color-paper-alt);
  color: #b23b2f;
}

/* --- Hero photo (RSE, Recrutement, Professionnels, Particuliers…) --- */
.photo-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 70vh;
  overflow: hidden;
  color: var(--color-paper);
  background: var(--color-bg-dark);
}

.photo-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.55);
}

.photo-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(20, 18, 16, 0.85), rgba(20, 18, 16, 0.2) 55%);
}

.photo-hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-block: var(--space-9) var(--space-8);
}

.photo-hero .prose {
  margin-top: var(--space-5);
  max-width: 38rem;
}

.photo-hero .prose p {
  color: var(--color-paper);
  opacity: 0.9;
}

/* --- Bloc réalisation : photo verticale + texte + photo large + carton
   nom/description (galeries Cuisines, Ameublement…) --- */
.feature-block {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  grid-template-rows: auto auto;
  gap: var(--space-6) var(--space-8);
}

.feature-block__photo-tall {
  grid-column: 1;
  grid-row: 1 / 3;
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.feature-block__text {
  grid-column: 2;
  grid-row: 1;
  align-self: start;
}

.feature-block__photo-wrap {
  position: relative;
  grid-column: 2;
  grid-row: 2;
}

.feature-block__photo-wide {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* Carton nom/description : superposé sur la photo, coin arrondi, apparaît
   au scroll via le système [data-animate] existant (voir base.css). */
.feature-block__caption {
  position: absolute;
  left: var(--space-5);
  right: var(--space-5);
  bottom: var(--space-5);
  padding: var(--space-5);
  background: rgba(245, 241, 236, 0.94);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.feature-block__caption h3 {
  color: var(--color-brand);
  margin-bottom: var(--space-2);
}

.feature-block__caption p {
  color: var(--color-text-soft);
  margin-bottom: var(--space-3);
}

.feature-block__caption .label {
  color: var(--color-text-soft);
}

.feature-block--reverse .feature-block__photo-tall {
  grid-column: 2;
}
.feature-block--reverse .feature-block__text,
.feature-block--reverse .feature-block__photo-wrap {
  grid-column: 1;
}

@media (max-width: 720px) {
  .feature-block,
  .feature-block--reverse {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .feature-block__photo-tall,
  .feature-block--reverse .feature-block__photo-tall {
    grid-column: 1;
    grid-row: auto;
    aspect-ratio: 4 / 3;
  }
  .feature-block__text,
  .feature-block__photo-wrap,
  .feature-block--reverse .feature-block__text,
  .feature-block--reverse .feature-block__photo-wrap {
    grid-column: 1;
  }
  .feature-block__caption {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
    padding: var(--space-4);
  }
}

/* --- Carrousel de réalisations : une photo au centre, les deux voisines en
   aperçu réduit de part et d'autre, flèches rondes semi-transparentes --- */
.showcase-carousel {
  margin-top: var(--space-7);
}

.showcase-carousel__track {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.showcase-carousel__photo {
  object-fit: cover;
  border-radius: 0.625rem;
  transition: transform var(--duration-base) var(--ease-standard), opacity var(--duration-base) var(--ease-standard);
}

.showcase-carousel__photo[data-anim="out-next"] {
  transform: translateX(-2rem);
  opacity: 0;
}
.showcase-carousel__photo[data-anim="out-prev"] {
  transform: translateX(2rem);
  opacity: 0;
}

.showcase-carousel__photo--side {
  width: 18%;
  aspect-ratio: 3 / 4;
  opacity: 0.5;
}

.showcase-carousel__photo--active {
  width: 46%;
  aspect-ratio: 4 / 3;
}

.showcase-carousel__arrow {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
  border: var(--border-width) solid var(--color-border);
  background: rgba(245, 241, 236, 0.5);
  color: var(--color-text);
  font-size: var(--text-lg);
  transition: background-color var(--duration-fast) var(--ease-standard), border-color var(--duration-fast) var(--ease-standard);
}

.showcase-carousel__arrow:hover,
.showcase-carousel__arrow:focus-visible {
  background: var(--color-white);
  border-color: var(--color-brand);
}

.showcase-carousel__caption {
  margin-top: var(--space-5);
  text-align: center;
}

.showcase-carousel__caption h3 {
  color: var(--color-brand);
  margin-bottom: var(--space-2);
}

.showcase-carousel__caption .label {
  color: var(--color-text-soft);
}

@media (max-width: 720px) {
  .showcase-carousel__photo--side {
    display: none;
  }
  .showcase-carousel__photo--active {
    width: 70%;
  }
}

/* --- Cartes de réalisations épilées : la section reste figée pendant que
   chaque carte (pleine hauteur) glisse jusqu'au centre et se superpose à la
   précédente, au rythme du scroll. Voir assets/js/scroll-cards.js. Sur
   mobile, dégrade en simple bandeau défilable au doigt (media query plus
   bas). --- */

/* --- Bande de logos clients défilant en boucle (CSS pur, pas de JS) ---
   Le track contient le groupe de logos deux fois de suite ; l'animation ne
   glisse que de -50%, donc au moment où le 1er groupe sort de l'écran le 2e
   (identique) prend exactement sa place : la boucle ne se voit pas. Le
   second groupe est dupliqué pour l'effet visuel seulement, donc masqué aux
   lecteurs d'écran. */
.logo-marquee {
  background: var(--color-white);
  overflow: hidden;
  padding-block: var(--space-7);
}

.logo-marquee__track {
  display: flex;
  width: max-content;
  animation: logo-marquee-scroll 36s linear infinite;
}

.logo-marquee:hover .logo-marquee__track {
  animation-play-state: paused;
}

.logo-marquee__group {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-marquee__group img {
  height: 2rem;
  width: auto;
  margin-inline: var(--space-8);
  flex-shrink: 0;
  object-fit: contain;
  opacity: 0.7;
  transition: opacity var(--duration-fast) var(--ease-standard);
}

.logo-marquee__group img:hover {
  opacity: 1;
}

@keyframes logo-marquee-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (max-width: 720px) {
  .logo-marquee {
    padding-block: var(--space-6);
  }
  .logo-marquee__group img {
    height: 1.5rem;
    margin-inline: var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .logo-marquee__track {
    animation: none;
  }
  .logo-marquee__group[aria-hidden="true"] {
    display: none;
  }
}

.scroll-cards {
  position: relative;
  overflow-x: clip;
}

.scroll-cards__pin {
  position: relative;
  height: 100vh;
  overflow: hidden;
  background: var(--color-bg-dark);
  color: var(--color-paper);
}

/* Épinglage entièrement piloté en JS (assets/js/scroll-cards.js) plutôt que
   par position:sticky — évite tout écart entre le relâchement natif du
   sticky et le calcul de progression des cartes, qui pouvait laisser
   entrevoir le fond de page avant la section suivante. */
.scroll-cards__pin.is-fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
}

.scroll-cards__pin.is-end {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
}

.scroll-cards__intro {
  position: absolute;
  top: var(--space-7);
  left: var(--container-pad);
  z-index: 100;
}

.scroll-cards__intro .eyebrow {
  color: var(--color-ink);
}

.scroll-card {
  position: absolute;
  inset: 0 auto 0 50%;
  width: min(64vw, 50rem);
  height: 100%;
  will-change: transform;
  box-shadow: var(--shadow-lg);
}

/* Chaque carte suivante se superpose à la précédente. */
.scroll-card:nth-child(1) { z-index: 1; }
.scroll-card:nth-child(2) { z-index: 2; }
.scroll-card:nth-child(3) { z-index: 3; }
.scroll-card:nth-child(4) { z-index: 4; }
.scroll-card:nth-child(5) { z-index: 5; }
.scroll-card:nth-child(6) { z-index: 6; }
.scroll-card:nth-child(7) { z-index: 7; }
.scroll-card:nth-child(8) { z-index: 8; }
.scroll-card:nth-child(9) { z-index: 9; }
.scroll-card:nth-child(10) { z-index: 10; }
.scroll-card:nth-child(11) { z-index: 11; }
.scroll-card:nth-child(12) { z-index: 12; }

.scroll-card__link {
  display: block;
  width: 100%;
  height: 100%;
}

.scroll-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scroll-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(20, 18, 16, 0.85), transparent 55%);
}

.scroll-card__title {
  position: absolute;
  left: var(--space-6);
  bottom: var(--space-6);
  z-index: 1;
  color: var(--color-paper);
  font-weight: var(--weight-demi);
  font-size: var(--text-2xl);
}

@media (max-width: 720px) {
  .scroll-cards__pin {
    position: static;
    height: auto;
    padding-block: var(--space-9) var(--space-8);
  }
  .scroll-cards__intro {
    position: static;
    padding-inline: var(--container-pad);
    margin-bottom: var(--space-6);
  }
  .scroll-cards__stack {
    display: flex;
    gap: var(--space-4);
    padding-inline: var(--container-pad);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
  }
  .scroll-card {
    position: static;
    flex: 0 0 auto;
    width: 78vw;
    height: auto;
    aspect-ratio: 3 / 4;
    scroll-snap-align: start;
    transform: none !important;
    box-shadow: none;
  }
  .scroll-card__title {
    font-size: var(--text-lg);
  }
}

/* --- Bouton retour en haut : injecté par assets/js/back-to-top.js sur
   toutes les pages, masqué tant qu'on n'a pas assez défilé. --- */
.back-to-top {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
  background: var(--color-bg-dark);
  color: var(--color-paper);
  font-size: var(--text-lg);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(0.5rem);
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard);
}

.back-to-top.is-visible {
  opacity: 0.9;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  opacity: 1;
  background: var(--color-brand);
}

@media (max-width: 640px) {
  .back-to-top {
    width: 2.75rem;
    height: 2.75rem;
    right: var(--space-4);
    bottom: var(--space-4);
  }
}