/* =========================================================================
   Donatien Roche — Bibliothèque 3D (module autonome)
   Charte : #f1f0f0 blanc cassé · #021322 bleu nuit · #bc8f56 bronze (accents)
   Typo   : Familjen Grotesk (titres) · IBM Plex Sans (texte)
   Ce dossier est autoportant : polices, styles et scripts lui sont propres.
   ========================================================================= */

/* ---- Polices auto-hébergées (RGPD : aucun appel externe) ---------------- */
@font-face {
  font-family: "Familjen Grotesk";
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url("../fonts/familjen-grotesk-latin.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url("../fonts/ibm-plex-sans-latin.woff2") format("woff2");
}

/* -------------------------------------------------------------------------
   1. Tokens
   ------------------------------------------------------------------------- */
:root {
  --c-bg: #f1f0f0;
  --c-ink: #021322;
  --c-bronze: #bc8f56;
  --c-bronze-hover: #d6ab73;

  --c-surface: #ffffff;
  --c-surface-warm: #f7f5f2;
  --c-placeholder: #e4e2e0;

  /* Bibliothèque en fond sombre */
  --c-page-dark: #04182a;      /* fond de page */
  --c-card-dark: #0b263b;      /* surface des cartes */
  --c-card-dark-2: #0f2c43;    /* média / hover */
  --hair-on-ink-strong: rgba(241, 240, 240, 0.2);

  --c-text: #2c3a47;
  --c-text-strong: var(--c-ink);
  --c-muted: #5b6875;
  --c-overline: #7a6a55;
  --c-link-light: #7a5c33;

  --c-on-ink: #f1f0f0;
  --c-on-ink-80: rgba(241, 240, 240, 0.8);
  --c-on-ink-70: rgba(241, 240, 240, 0.72);
  --c-on-ink-60: rgba(241, 240, 240, 0.62);

  --hair-bronze: rgba(188, 143, 86, 0.4);
  --hair-bronze-strong: rgba(188, 143, 86, 0.5);
  --hair-ink: rgba(2, 19, 34, 0.1);
  --hair-ink-strong: rgba(2, 19, 34, 0.18);
  --hair-on-ink: rgba(241, 240, 240, 0.12);

  --font-display: "Familjen Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --fs-overline: 0.6875rem;
  --fs-nav: 0.78125rem;
  --fs-button: 0.8125rem;
  --fs-small: 0.9375rem;
  --fs-body: 1rem;
  --fs-lead: clamp(1rem, 0.9rem + 0.5vw, 1.1875rem);
  --fs-h3: 1.25rem;
  --fs-h2: clamp(1.75rem, 1.35rem + 2vw, 2.5rem);
  --fs-h1: clamp(2.125rem, 1.4rem + 3.6vw, 3.5rem);

  --container: 1280px;
  --header-h: 76px;
  --section-pad-y: clamp(4rem, 8vw, 6.75rem);
  --gutter: clamp(1.25rem, 5vw, 3.5rem);

  --radius-pill: 999px;
  --radius-card: 20px;
  --radius-media: 16px;

  --ease: 0.25s ease;
}

/* -------------------------------------------------------------------------
   2. Reset
   ------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--c-on-ink);
  background: var(--c-page-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }
img, video { height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
ul, ol { list-style: none; padding: 0; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.025em;
  text-wrap: pretty;
}

:focus-visible {
  outline: 2px solid var(--c-bronze);
  outline-offset: 3px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* -------------------------------------------------------------------------
   3. Mise en page
   ------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0;
  transform: translateY(-120%);
  z-index: 200;
  background: var(--c-bronze);
  color: var(--c-ink);
  font-size: var(--fs-nav);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 12px 12px;
  transition: transform var(--ease);
}
.skip-link:focus { transform: translateY(0); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.overline {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--fs-overline);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-overline);
}
.overline--bronze { color: var(--c-bronze); }

.rule {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--c-bronze);
  border: 0;
}

/* -------------------------------------------------------------------------
   4. Boutons
   ------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: var(--fs-button);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1;
  padding: 1rem 1.875rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: background var(--ease), color var(--ease), border-color var(--ease),
    transform var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--c-bronze); color: var(--c-ink); }
.btn--primary:hover { background: var(--c-bronze-hover); }
.btn--ghost { color: var(--c-on-ink); border-color: rgba(241, 240, 240, 0.32); }
.btn--ghost:hover { border-color: var(--c-bronze); color: var(--c-bronze); }
.btn--sm { padding: 0.875rem 1.5rem; font-size: 0.78125rem; }

/* -------------------------------------------------------------------------
   5. En-tête + pied de page (repris du site principal)
   ------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-inline: var(--gutter);
  background: rgba(2, 19, 34, 0.98);
  border-bottom: 1px solid rgba(188, 143, 86, 0.32);
}
@supports (backdrop-filter: blur(6px)) {
  .site-header { background: rgba(2, 19, 34, 0.9); backdrop-filter: blur(8px); }
}
.brand { display: flex; align-items: center; gap: 0.75rem; color: var(--c-on-ink); }
.brand__mark { width: auto; height: 38px; flex: none; }
.brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  line-height: 1.15;
  white-space: nowrap;
}
.brand__role {
  display: block;
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-bronze);
  margin-top: 4px;
  white-space: nowrap;
}
.nav { display: flex; align-items: center; gap: clamp(0.9rem, 1.9vw, 1.7rem); }
.nav__link {
  position: relative;
  font-size: var(--fs-nav);
  letter-spacing: 0.1em;
  line-height: 1.16;
  text-align: center;
  text-transform: uppercase;
  color: var(--c-on-ink);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}
.nav__link::before { content: ""; position: absolute; inset: -15px -10px; }
.nav__link:hover { color: var(--c-bronze); }
.nav__link[aria-current="page"] { color: var(--c-bronze); border-bottom-color: var(--c-bronze); }

/* --- Bouton burger + panneau mobile (repris du site principal) --- */
.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 6px;
  background: none;
  border: 0;
  padding: 0;
}
.nav-toggle__bar {
  display: block;
  width: 26px;
  height: 1.5px;
  background: var(--c-on-ink);
  transition: transform var(--ease), opacity var(--ease), width var(--ease), background var(--ease);
}
.nav-toggle__bar:nth-child(2) { width: 20px; }
.nav-toggle__bar:nth-child(3) { width: 14px; background: var(--c-bronze); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar { width: 26px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  background: var(--c-on-ink);
  transform: translateY(-7.5px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: var(--header-h) 0 auto 0;
  z-index: 55;
  background: var(--c-ink);
  border-bottom: 1px solid rgba(188, 143, 86, 0.32);
  display: flex;
  flex-direction: column;
  padding: 0.75rem var(--gutter) 1.75rem;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
}
.mobile-menu[data-open="true"] {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.mobile-menu__link {
  font-size: 0.9375rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-on-ink);
  padding: 1rem 0;
  border-bottom: 1px solid rgba(241, 240, 240, 0.1);
}
.mobile-menu__link[aria-current="page"] { color: var(--c-bronze); }
.mobile-menu .btn { margin-top: 1.125rem; }

@media (max-width: 1240px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
}
@media (min-width: 1241px) {
  .mobile-menu { display: none; }
}

.site-footer {
  background: var(--c-ink);
  color: var(--c-on-ink-70);
  border-top: 1px solid var(--hair-on-ink);
  padding-block: 1.5rem 1.25rem;
  font-size: var(--fs-small);
}
.site-footer a:hover { color: var(--c-bronze); }
.site-footer__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 3rem;
  margin-bottom: 1rem;
}
.site-footer__brand {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.4rem 0.85rem;
}
.site-footer__brand-name {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-on-ink);
}
.site-footer__brand-role {
  font-size: var(--fs-overline);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-bronze);
}
@media (max-width: 560px) {
  .site-footer__brand { flex-direction: column; gap: 0.35rem; }
}
.site-footer__nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.75rem; }
.site-footer__nav a { display: inline-block; padding-block: 0.25rem; letter-spacing: 0.03em; }
.site-footer__nav a[aria-current="page"] { color: var(--c-bronze); }
.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--hair-on-ink);
  font-size: 0.8125rem;
  color: var(--c-on-ink-60);
}
.site-footer__bottom a {
  color: var(--c-on-ink-60);
  text-decoration: underline;
  text-decoration-color: var(--hair-bronze);
  text-underline-offset: 3px;
  padding-block: 0.35rem;
  transition: color var(--ease);
}
.site-footer__bottom a:hover,
.site-footer__bottom a[aria-current="page"] { color: var(--c-bronze); }
@media (max-width: 560px) {
  .site-footer__top { flex-direction: column; gap: 1.25rem; }
  .site-footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* -------------------------------------------------------------------------
   6. Hero de la bibliothèque
   ------------------------------------------------------------------------- */
.bibliotheque-hero {
  background: var(--c-ink);
  color: var(--c-on-ink);
  padding: calc(var(--header-h) + clamp(2rem, 6vw, 3.75rem)) 0 clamp(1.75rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--hair-bronze);
}
.bibliotheque-hero__kicker { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; }
.bibliotheque-hero__eyebrow {
  /* hérite de .overline : petite capitale bronze espacée — sert de <h1> */
  margin: 0;
}
.bibliotheque-hero__subtitle {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.375rem, 1.1rem + 1.4vw, 1.875rem);
  letter-spacing: -0.02em;
  color: var(--c-on-ink);
}
.bibliotheque-hero__meta {
  margin-top: 1.1rem;
  font-size: var(--fs-overline);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-on-ink-60);
}

/* -------------------------------------------------------------------------
   7. Collections + grille
   ------------------------------------------------------------------------- */
.bibliotheque-body { padding-block: clamp(2rem, 4vw, 3.25rem); }

.collection { margin-bottom: clamp(1.75rem, 4vw, 2.75rem); }
.collection:last-child { margin-bottom: 0; }

.collection__head { margin: 0 0 clamp(0.9rem, 2vw, 1.375rem); }
.collection__toggle {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  width: 100%;
  padding: 0 0 0.75rem;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--c-bronze);
  text-align: left;
  color: inherit;
  cursor: pointer;
}
.collection__heading {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}
.collection__title {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-size: clamp(1.125rem, 0.95rem + 0.8vw, 1.5rem);
  color: var(--c-bronze);
}
.collection__subtitle {
  font-size: var(--fs-small);
  line-height: 1.4;
  color: var(--c-on-ink-60);
}
.collection__count {
  font-size: var(--fs-overline);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-on-ink-60);
  white-space: nowrap;
}
.collection__chevron {
  margin-left: auto;
  align-self: center;
  flex: none;
  width: 18px;
  height: 18px;
  color: var(--c-bronze);
  transition: transform var(--ease);
}
.collection__chevron svg { width: 100%; height: 100%; stroke: currentColor; fill: none; stroke-width: 1.6; }
.collection__toggle[aria-expanded="false"] .collection__chevron { transform: rotate(-90deg); }

.cat-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(0.6rem, 1.4vw, 1rem);
}
.cat-grid[hidden] { display: none; }
@media (max-width: 1240px) { .cat-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 900px)  { .cat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 620px)  { .cat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.cat-card {
  display: flex;
  flex-direction: column;
  text-align: left;
  background: var(--c-card-dark);
  border: 1px solid var(--hair-on-ink);
  border-radius: 7px;
  overflow: hidden;
  padding: 0;
  transition: transform var(--ease), border-color var(--ease), background var(--ease);
}
.cat-card:hover {
  transform: translateY(-3px);
  border-color: var(--hair-bronze-strong);
  background: var(--c-card-dark-2);
}
.cat-card__media {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--c-card-dark-2);
  overflow: hidden;
}
.cat-card__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.4s ease;
}
/* carte sans vignette : filigrane discret */
.cat-card__media--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-card-dark-2);
}
.cat-card__media--empty svg {
  width: 30%;
  height: 30%;
  stroke: var(--c-bronze);
  fill: none;
  stroke-width: 1.1;
  opacity: 0.4;
}
.cat-card:hover .cat-card__media img { transform: scale(1.04); }
.cat-card__media::after {
  content: "";
  position: absolute;
  right: 0.6rem;
  bottom: 0.6rem;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--c-bronze) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%23021322" stroke-width="1.7"><path d="M12 3a9 9 0 100 18 9 9 0 000-18z"/><path d="M3 12h18M12 3c2.5 2.4 2.5 15.6 0 18M12 3c-2.5 2.4-2.5 15.6 0 18"/></svg>') center / 16px no-repeat;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--ease), transform var(--ease);
}
.cat-card:hover .cat-card__media::after,
.cat-card:focus-visible .cat-card__media::after { opacity: 1; transform: none; }

.cat-card__body { padding: 0.55rem 0.7rem 0.65rem; display: flex; flex-direction: column; }
.cat-card__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.8125rem;
  line-height: 1.25;
  letter-spacing: -0.005em;
  color: var(--c-on-ink);
  transition: color var(--ease);
}
.cat-card:hover .cat-card__title { color: var(--c-bronze); }

/* État vide / erreur de chargement du CSV */
.bibliotheque-status {
  border: 1px dashed var(--hair-on-ink-strong);
  border-radius: var(--radius-media);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--c-on-ink-70);
  font-size: var(--fs-small);
  text-align: center;
}

/* -------------------------------------------------------------------------
   8. Visionneuse 3D (dialog plein écran)
   ------------------------------------------------------------------------- */
.viewer {
  width: min(100vw, 100%);
  max-width: none;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: var(--c-ink);
  color: var(--c-on-ink);
  overflow: hidden;
}
.viewer::backdrop { background: rgba(2, 8, 15, 0.85); }
.viewer[hidden] { display: none; }

.viewer__layout {
  display: grid;
  grid-template-rows: auto 1fr;
  height: 100%;
}

/* -- barre supérieure : identité + tous les réglages -- */
.viewer__bar {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 3vw, 1.5rem);
  padding: 0.6rem clamp(0.75rem, 3vw, 1.5rem);
  background: rgba(2, 19, 34, 0.96);
  border-bottom: 1px solid var(--hair-on-ink);
}
.viewer__ident { min-width: 0; flex: 1 1 auto; }
.viewer__collection {
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-bronze);
}
.viewer__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--c-on-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.viewer__subtitle {
  font-size: 0.75rem;
  color: var(--c-on-ink-60);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 1px;
}
.viewer__subtitle[hidden] { display: none; }

.viewer__tools { display: flex; align-items: center; gap: clamp(0.5rem, 2vw, 1rem); flex: 0 0 auto; }

/* réglage exposition — discret : icône + curseur court, sans libellé ni valeur */
.viewer__exposure { display: flex; align-items: center; gap: 0.5rem; flex: 0 1 132px; }
.viewer__exposure-icon { width: 15px; height: 15px; flex: none; stroke: currentColor; fill: none; stroke-width: 1.6; color: var(--c-on-ink-60); }
.viewer__exposure input[type="range"] {
  width: 100%;
  min-width: 64px;
  height: 18px;
  accent-color: var(--c-bronze);
  opacity: 0.7;
  transition: opacity var(--ease);
  cursor: ew-resize;
}
.viewer__exposure:hover input[type="range"],
.viewer__exposure input[type="range"]:focus-visible { opacity: 1; }

.viewer__bar-actions { display: flex; align-items: center; gap: 0.4rem; flex: none; }

/* pastilles texte — « Description » (mise en évidence) et « Original » (switch) */
.viewer__pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  height: 44px;
  padding: 0 1.05rem;
  flex: none;
  border-radius: var(--radius-pill);
  border: 1px solid var(--c-bronze);
  background: transparent;
  color: var(--c-on-ink);
  font-size: var(--fs-button);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}
.viewer__pill svg { width: 15px; height: 15px; flex: none; stroke: currentColor; fill: none; stroke-width: 1.8; }
.viewer__pill:hover { background: rgba(188, 143, 86, 0.16); color: var(--c-bronze); }
.viewer__pill[aria-expanded="true"],
.viewer__pill[aria-pressed="true"] {
  background: var(--c-bronze);
  border-color: var(--c-bronze);
  color: var(--c-ink);
}
.viewer__pill--switch { border-style: dashed; }
.viewer__pill--switch[aria-pressed="true"] { border-style: solid; }
.viewer__pill[hidden] { display: none; }

.viewer__icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--hair-on-ink);
  background: transparent;
  color: var(--c-on-ink);
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}
.viewer__icon-btn:hover { border-color: var(--c-bronze); color: var(--c-bronze); }
.viewer__icon-btn[aria-pressed="true"],
.viewer__icon-btn[aria-expanded="true"] {
  background: var(--c-bronze);
  border-color: var(--c-bronze);
  color: var(--c-ink);
}
.viewer__icon-btn svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.6; }
.viewer__icon-btn svg .is-solid { fill: currentColor; stroke: none; }

/* -- scène -- */
.viewer__stage {
  position: relative;
  min-height: 0;
  background:
    radial-gradient(120% 90% at 50% 25%, #0a2437 0%, #021322 70%);
  overflow: hidden;
}
.viewer__stage.is-light {
  background: radial-gradient(120% 90% at 50% 20%, #ffffff 0%, #dcdad7 80%);
}
.viewer__canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

.viewer__loader,
.viewer__error {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  text-align: center;
  padding: 1.5rem;
  font-size: var(--fs-overline);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-on-ink-70);
}
.viewer__stage.is-light .viewer__loader,
.viewer__stage.is-light .viewer__error { color: var(--c-text); }
.viewer__spinner {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--hair-bronze);
  border-top-color: var(--c-bronze);
  animation: viewer-spin 0.9s linear infinite;
}
@keyframes viewer-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .viewer__spinner { animation-duration: 2s; } }
.viewer__error { display: none; }
.viewer__error img { max-width: min(80%, 420px); border-radius: var(--radius-media); }
.viewer.is-error .viewer__loader { display: none; }
.viewer.is-error .viewer__error { display: flex; }

.viewer__hint {
  position: absolute;
  left: 50%;
  bottom: 0.75rem;
  transform: translateX(-50%);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-on-ink-60);
  pointer-events: none;
  transition: opacity var(--ease);
}
.viewer__stage.is-light .viewer__hint { color: var(--c-muted); }

/* -- volet description / liens -- */
.viewer__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(90vw, 380px);
  height: 100%;
  background: rgba(3, 14, 24, 0.97);
  border-left: 1px solid var(--hair-bronze);
  padding: clamp(1.25rem, 4vw, 2rem);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 3;
}
@supports (backdrop-filter: blur(6px)) {
  .viewer__panel { background: rgba(3, 14, 24, 0.86); backdrop-filter: blur(10px); }
}
.viewer__panel.is-open { transform: none; }

/* Poignée « Description » — visible seulement en mobile (feuille repliable). */
.viewer__panel-grip { display: none; }

.viewer__panel-title {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--c-on-ink);
  margin-bottom: 0.9rem;
}
.viewer__panel-title + .viewer__panel-subtitle { margin-top: -0.55rem; }
.viewer__panel-collection {
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-bronze);
  margin-bottom: 1.25rem;
}
.viewer__panel-subtitle {
  font-size: var(--fs-small);
  color: var(--c-on-ink-60);
  margin-bottom: 1.1rem;
}
.viewer__panel-subtitle[hidden] { display: none; }
.viewer__panel-desc { color: var(--c-on-ink-80); line-height: 1.75; font-size: var(--fs-small); }
.viewer__links { margin-top: 1.75rem; display: flex; flex-direction: column; gap: 0.75rem; }
.viewer__links[hidden] { display: none; }
.viewer__links [data-viewer-links-list] { display: flex; flex-direction: column; gap: 0.85rem; }
.viewer__links-title {
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-on-ink-60);
  padding-top: 1rem;
  border-top: 1px solid var(--hair-on-ink);
}
.viewer__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--c-on-ink);
  font-size: var(--fs-small);
  border-bottom: 1px solid var(--c-bronze);
  padding-bottom: 4px;
  width: fit-content;
  transition: color var(--ease), gap var(--ease);
}
.viewer__link::after { content: "\2197"; color: var(--c-bronze); }
.viewer__link:hover { color: var(--c-bronze); gap: 0.75rem; }

@media (max-width: 700px) {
  /* Volet description = feuille repliable ancrée en bas.
       - état replié (défaut) : seule la poignée « Description » dépasse
       - geste vers le haut → déploiement · geste vers le bas → repli
     (JS `panelSheet`). Le bouton « Description » de la barre est retiré. */
  .viewer__panel {
    --peek: 52px;
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: auto;
    max-height: 80dvh;
    border-left: 0;
    border-top: 1px solid var(--hair-bronze);
    border-radius: 14px 14px 0 0;
    padding-top: 0;
    padding-bottom: calc(clamp(1.25rem, 4vw, 2rem) + env(safe-area-inset-bottom));
    transform: translateY(calc(100% - var(--peek)));
    touch-action: pan-y;
  }
  .viewer__panel.is-open { transform: translateY(0); }

  .viewer__panel-grip {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    width: 100%;
    min-height: var(--peek);
    margin: 0 0 0.9rem;
    padding: 0;
    border: 0;
    background: none;
    color: var(--c-on-ink-60);
    font: inherit;
    cursor: pointer;
  }
  .viewer__panel-grip-bar {
    width: 2.25rem;
    height: 0.25rem;
    border-radius: 999px;
    background: var(--c-on-ink-45, rgba(241, 240, 240, 0.35));
  }
  .viewer__panel-grip-label {
    font-size: 0.6875rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }

  /* la barre : titres à gauche, 3 boutons carrés dans le coin haut droit.
     Pas de curseur d'exposition, pas de sous-titre, pas de pastille
     « Description » (remplacée par la poignée du volet). */
  .viewer__bar {
    flex-wrap: wrap;
    align-items: flex-start;
    row-gap: 0.55rem;
    column-gap: 0.5rem;
    padding: 0.55rem 0.8rem;
  }
  .viewer__tools { display: contents; }

  .viewer__ident { order: 1; flex: 1 1 auto; min-width: 0; }
  .viewer__collection { font-size: 0.5625rem; }
  .viewer__title {
    font-size: 0.9375rem;
    white-space: normal;
    overflow: visible;
    line-height: 1.25;
  }
  .viewer__subtitle { display: none; }
  .viewer__exposure { display: none; }
  .viewer__hint { display: none; }

  .viewer__bar-actions { order: 2; flex: 0 0 auto; align-self: flex-start; gap: 0.4rem; }
  .viewer__icon-btn { width: 38px; height: 38px; border-radius: 10px; }
  .viewer__icon-btn svg { width: 18px; height: 18px; }

  /* pastille « Description » supprimée ; « Original » (si présent) sur la 2e ligne */
  .viewer__pill[data-viewer-panel-toggle] { display: none; }
  .viewer__pill {
    order: 3;
    flex: 1 1 auto;
    height: 38px;
    padding: 0 0.85rem;
    font-size: 0.72rem;
    gap: 0.4rem;
    justify-content: center;
    white-space: nowrap;
  }
}

/* -------------------------------------------------------------------------
   9. Révélations au scroll
   N'agit que si .reveal-ready est posée sur <html> par bibliotheque.js
   (IntersectionObserver présent + prefers-reduced-motion respecté).
   Sans JS ou en réduction de mouvement : contenu affiché normalement.
   ------------------------------------------------------------------------- */
.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
/* cascade des cartes d'une grille */
.reveal-ready .cat-grid > [data-reveal] {
  transition-delay: calc(var(--reveal-i, 0) * 45ms);
}
.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal-ready [data-reveal] { opacity: 1; transform: none; transition: none; }
}