/* Base commune aux trois maquettes. Les variantes (a.css, b.css, c.css) fixent les jetons. */
:root {
  --fond: #fff;
  --fond-2: #f2f2f2;
  --encre: #000;
  --encre-2: #555;
  --trait: #ccc;
  --accent: #000;
  --sur-accent: #fff;
  --police-titre: system-ui, sans-serif;
  --police-texte: system-ui, sans-serif;
  --largeur: 1200px;
  --marge: 16px;
  --espace: 40px;
}
@media (min-width: 760px) { :root { --marge: 32px; --espace: 72px; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--fond);
  color: var(--encre);
  font-family: var(--police-texte);
  font-size: 1rem;
  line-height: 1.6;
}
img, video { display: block; max-width: 100%; height: auto; }
picture { display: contents; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--police-titre); line-height: 1.15; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.125rem; }
p { margin: 0 0 1em; max-width: 68ch; }
ul, ol { padding: 0; margin: 0; list-style: none; }
address { font-style: normal; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.visuellement-cache { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.evitement { position: absolute; left: -999px; top: 8px; background: var(--encre); color: var(--fond); padding: 8px 12px; z-index: 10; }
.evitement:focus { left: 8px; }
mark.af { background: #ffe066; color: #000; padding: 0 .2em; }

/* En-tête */
.entete {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: var(--largeur); margin: 0 auto; padding: 16px var(--marge);
  position: relative;
}
.marque { text-decoration: none; display: flex; align-items: center; gap: 10px; }
.menu-bouton {
  font: inherit; font-weight: 600; background: none; color: inherit;
  border: 1px solid currentColor; padding: 8px 14px; cursor: pointer;
}
.menu { display: none; }
.menu-ouvert .menu {
  display: block; position: absolute; top: 100%; left: 0; right: 0; z-index: 5;
  background: var(--fond); padding: 8px var(--marge) 24px; border-bottom: 1px solid var(--trait);
}
.menu ul { display: grid; gap: 4px; margin-bottom: 16px; }
.menu a { text-decoration: none; display: block; padding: 8px 0; font-weight: 500; }
.menu a[aria-current] { text-decoration: underline; text-underline-offset: 6px; }
.menu .bouton { display: inline-block; padding: 12px 20px; }
@media (min-width: 860px) {
  .menu-bouton { display: none; }
  .menu, .menu-ouvert .menu { display: flex; align-items: center; gap: 28px; position: static; padding: 0; border: 0; background: none; }
  .menu ul { display: flex; gap: 24px; margin: 0; }
}

/* Boutons et liens */
.bouton {
  display: inline-block; background: var(--accent); color: var(--sur-accent);
  text-decoration: none; font-weight: 600; padding: 14px 24px; border: 0; cursor: pointer;
  font: inherit; font-weight: 600;
}
.bouton:hover { filter: brightness(1.15); }
.lien { font-weight: 600; text-underline-offset: 5px; }
.hero-actions, .appel-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-top: 24px; }

/* Sections */
.section, .page-tete, .appel {
  max-width: var(--largeur); margin: 0 auto; padding: var(--espace) var(--marge) 0;
}
.section-tete { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px 24px; margin-bottom: 24px; }
.section-tete h2 { margin: 0; }
.page-tete h1 { margin-bottom: 16px; }
.page-intro p { font-size: 1.125rem; }

/* Fiche pratique */
.fiche { margin: 0; display: grid; gap: 0; border-top: 1px solid var(--trait); }
.fiche div { display: grid; grid-template-columns: 7.5rem 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--trait); }
.fiche dt { font-weight: 600; }
.fiche dd { margin: 0; }
.fiche + p { margin-top: 20px; }

.lieu-bref { display: grid; gap: 32px; }
@media (min-width: 900px) { .lieu-bref { grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start; } }

/* Cartes d'événements */
.cartes { display: grid; gap: 32px 24px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); }
.carte a { text-decoration: none; display: block; }
.carte-image { aspect-ratio: 4 / 3; overflow: hidden; background: var(--fond-2); margin-bottom: 14px; }
.carte-image img { width: 100%; height: 100%; object-fit: cover; }
.carte-titre { font-size: 1.25rem; margin-bottom: 6px; }
.carte a:hover .carte-titre, .carte a:focus-visible .carte-titre { text-decoration: underline; text-underline-offset: 4px; }
.carte-meta { color: var(--encre-2); font-size: .9375rem; display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 0; }
.sans-photo { width: 100%; height: 100%; }

/* Idées, usages, engagements, atouts */
.idees-liste { display: grid; gap: 32px 24px; }
@media (min-width: 760px) { .idees-liste { grid-template-columns: repeat(3, 1fr); } }
.idee-image { aspect-ratio: 3 / 2; overflow: hidden; margin-bottom: 14px; background: var(--fond-2); }
.idee-image img { width: 100%; height: 100%; object-fit: cover; }
.usages-grille, .equip-grille { display: grid; gap: 24px 48px; }
@media (min-width: 760px) { .usages-grille { grid-template-columns: 1fr 1fr; } .equip-grille { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); } }
.usage li, .equip li { padding: 8px 0; border-bottom: 1px solid var(--trait); }
.engagements-liste, .atouts-liste { display: grid; gap: 24px 48px; }
@media (min-width: 760px) { .engagements-liste, .atouts-liste { grid-template-columns: 1fr 1fr; } }
.engagements-liste p, .atouts-liste p { color: var(--encre-2); margin: 0; }

/* Galerie */
.galerie { columns: 1; column-gap: 12px; }
@media (min-width: 560px) { .galerie { columns: 2; } }
@media (min-width: 900px) { .galerie { columns: 3; } }
.galerie li { break-inside: avoid; margin-bottom: 12px; }
.galerie a { display: block; cursor: zoom-in; }
.galerie img { width: 100%; }

/* Visionneuse */
.visionneuse { border: 0; padding: 0; max-width: 100vw; max-height: 100vh; width: 100vw; height: 100vh; background: rgba(0, 0, 0, .92); color: #fff; }
.visionneuse::backdrop { background: rgba(0, 0, 0, .7); }
.visionneuse[open] { display: grid; place-items: center; grid-template-rows: 1fr auto; }
.visionneuse img { max-width: 92vw; max-height: 82vh; object-fit: contain; }
.visionneuse-legende { margin: 12px 16px 20px; text-align: center; }
.visionneuse button { position: absolute; background: none; border: 0; color: #fff; font-size: 2.5rem; line-height: 1; width: 56px; height: 56px; cursor: pointer; }
.vis-prec { left: 4px; top: 50%; transform: translateY(-50%); }
.vis-suiv { right: 4px; top: 50%; transform: translateY(-50%); }
.vis-fermer { right: 4px; top: 4px; }
.visionneuse :focus-visible { outline-color: #fff; }

/* Page événement */
.ev-tete { max-width: var(--largeur); margin: 0 auto; padding: 24px var(--marge) 0; }
.ev-couverture { aspect-ratio: 16 / 7; overflow: hidden; margin-bottom: 24px; background: var(--fond-2); }
.ev-couverture img { width: 100%; height: 100%; object-fit: cover; }
.ev-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; color: var(--encre-2); }
.types { display: flex; flex-wrap: wrap; gap: 8px; }
.types span { border: 1px solid var(--trait); padding: 2px 10px; font-size: .875rem; }
.ev-intro { max-width: var(--largeur); margin: 0 auto; padding: 16px var(--marge) 0; display: grid; gap: 32px; }
@media (min-width: 760px) { .ev-intro.avec-videos { grid-template-columns: minmax(0, 1fr) 340px; gap: 48px; align-items: start; } }
.ev-description { font-size: 1.125rem; }
.videos-liste { display: flex; flex-wrap: wrap; gap: 24px; }
.video { margin: 0; }
.video-vertical { width: min(100%, 340px); }
.video-vertical video { aspect-ratio: 9 / 16; width: 100%; background: #000; object-fit: cover; }
.video figcaption { font-size: .875rem; color: var(--encre-2); margin-top: 8px; }
.video-note { font-size: .875rem; background: #ffe066; color: #000; padding: 4px 8px; margin-top: 8px; }
.ev-nav { max-width: var(--largeur); margin: 0 auto; padding: var(--espace) var(--marge) 0; display: grid; gap: 16px; }
@media (min-width: 760px) { .ev-nav { grid-template-columns: 1fr 1fr auto; align-items: end; } }
.ev-nav a { text-decoration: none; font-weight: 600; }
.ev-nav a > span:first-child { display: block; font-weight: 400; color: var(--encre-2); font-size: .875rem; }
.ev-tous { text-decoration: underline !important; text-underline-offset: 5px; }

/* Filtres */
.filtres { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filtre { font: inherit; background: none; color: inherit; border: 1px solid var(--trait); padding: 8px 16px; cursor: pointer; }
.filtre[aria-pressed="true"] { background: var(--encre); color: var(--fond); border-color: var(--encre); }

/* Contact */
.contact { display: grid; gap: 40px; }
@media (min-width: 900px) { .contact { grid-template-columns: 1.6fr 1fr; gap: 64px; } }
.formulaire { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; align-content: start; }
.champ { grid-column: 1 / -1; display: grid; gap: 6px; }
.champ-large { grid-column: 1 / -1; }
@media (min-width: 560px) { .champ-demi { grid-column: auto; } }
.champ label { font-weight: 600; }
.facultatif { font-weight: 400; color: var(--encre-2); font-size: .875rem; }
.champ input, .champ select, .champ textarea {
  font: inherit; color: var(--encre); background: var(--fond); border: 1px solid var(--encre-2);
  padding: 12px; width: 100%; border-radius: 0;
}
.formulaire-retour { background: var(--fond-2); padding: 12px 16px; margin: 0; }
.coordonnees h2 { font-size: 1.125rem; margin-top: 24px; }
.coordonnees h2:first-child { margin-top: 0; }

/* Appel à l'action */
.appel { padding-bottom: var(--espace); }

/* Pied de page */
.pied {
  max-width: var(--largeur); margin: 0 auto; padding: 40px var(--marge) 48px;
  display: grid; gap: 24px; border-top: 1px solid var(--trait); font-size: .9375rem;
}
@media (min-width: 760px) { .pied { grid-template-columns: repeat(3, 1fr); } }
.pied p { margin: 0 0 .6em; }
.pied-nom { font-weight: 700; }
.pied-maquette { color: var(--encre-2); }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* Carrousel (variantes D et F) */
.carrousel { position: relative; }
.car-piste {
  position: relative; display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
  scrollbar-width: none; overscroll-behavior-x: contain;
}
.car-piste::-webkit-scrollbar { display: none; }
.car-diapo { flex: 0 0 100%; scroll-snap-align: start; }
.car-lien { display: block; text-decoration: none; color: inherit; height: 100%; }
.car-image { overflow: hidden; background: var(--fond-2); }
.car-image img { width: 100%; height: 100%; object-fit: cover; }
.car-titre { margin: 0 0 6px; }
.car-meta { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 0 0 10px; }
.car-voir { font-weight: 500; text-decoration: underline; text-underline-offset: 5px; }
.car-commandes { display: flex; align-items: center; gap: 8px; }
.car-commandes button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
.car-prec, .car-suiv { font-size: 2rem; line-height: 1; width: 44px; height: 44px; }
.car-points { display: flex; gap: 2px; }
.car-point { width: 28px; height: 44px; position: relative; }
.car-point::after { content: ""; position: absolute; left: 50%; top: 50%; width: 9px; height: 9px; margin: -4.5px; border-radius: 50%; border: 1px solid currentColor; }
.car-point[aria-current="true"]::after { background: currentColor; }
.car-pause { font-size: .875rem !important; text-decoration: underline; text-underline-offset: 4px; padding: 0 8px; height: 44px; }

/* Le lieu en images (variantes E et F) */
.li-grille { display: grid; gap: 12px; }
.li-grille figure { margin: 0; }
.li-grille img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.li-grille figcaption { font-size: .875rem; color: var(--encre-2); margin-top: 6px; }
@media (min-width: 760px) {
  .li-grille { grid-template-columns: 1.4fr 1fr; }
  .li-grille .li-0 { grid-row: span 2; }
  .li-grille .li-0 img { aspect-ratio: auto; height: calc(100% - 28px); }
  .li-grille .li-3 { grid-column: 1 / -1; }
  .li-grille .li-3 img { aspect-ratio: 21 / 8; }
}
.sym { font-family: var(--police-texte); font-weight: 400; font-size: .8em; }

/* Logo officiel EPM Events : le PNG sert de masque, la couleur vient du texte (currentColor) */
.logo {
  display: block; aspect-ratio: 1; background-color: currentColor;
  -webkit-mask: url(../media/epm-logo.png) center / contain no-repeat;
  mask: url(../media/epm-logo.png) center / contain no-repeat;
}
@media (forced-colors: active) { .logo { background-color: CanvasText; forced-color-adjust: none; } }