/* L’Écho des Ténèbres — charte de Sherazade (planches « Identité visuelle ») */
:root {
  --nuit: #071522;
  --charbon: #111111;
  --ivoire: #F5EEDD;
  --acier: #8DB9D8;
  --lumiere: #D4A567;
  --ivoire-doux: rgba(245, 238, 221, .72);
  --trait: rgba(141, 185, 216, .18);
  --mesure: 34rem;
  --large: 72rem;
}
*, *::before, *::after { box-sizing: border-box; }
html { background: var(--nuit); scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ivoire);
  font: 400 1.0625rem/1.65 Montserrat, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3 { font-family: "Bebas Neue", Impact, sans-serif; font-weight: 400; margin: 0; line-height: .92; letter-spacing: .01em; }
p, ul { margin: 0; }
a { color: var(--acier); }
:focus-visible { outline: 2px solid var(--lumiere); outline-offset: 4px; }
.cadre { max-width: var(--large); margin: 0 auto; padding-inline: 1.5rem; }
.discret { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- Navigation ---------- */
.nav {
  position: absolute; top: 0; left: 0; right: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1.5rem;
  max-width: var(--large); margin: 0 auto;
}
.nav-marque { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ivoire); }
.nav-marque img { width: 1.9rem; }
.nav-marque span { font-family: "Bebas Neue", sans-serif; font-size: 1.6rem; letter-spacing: .04em; }
.nav ul { list-style: none; padding: 0; display: flex; gap: 1.75rem; }
.nav ul a {
  color: var(--ivoire-doux); text-decoration: none; font-size: .95rem; font-weight: 500;
  padding: .3rem 0; border-bottom: 2px solid transparent;
}
.nav ul a:hover { color: var(--ivoire); }
.nav ul a[aria-current="page"] { color: var(--ivoire); border-bottom-color: var(--lumiere); }
.nav-bouton { display: none; }

@media (max-width: 820px) {
  .nav-bouton {
    display: block; background: none; border: 1px solid var(--trait); color: var(--ivoire);
    font: 500 .95rem Montserrat, sans-serif; padding: .45rem .9rem; border-radius: 2rem; cursor: pointer;
  }
  .nav ul {
    display: none; position: absolute; top: 4.5rem; left: 1rem; right: 1rem;
    flex-direction: column; gap: 0; padding: .5rem 1.25rem;
    background: rgba(7, 21, 34, .97); border: 1px solid var(--trait); border-radius: 1rem;
  }
  .nav.ouvert ul { display: flex; }
  .nav ul a { display: block; padding: .85rem 0; font-size: 1.05rem; border-bottom: 1px solid var(--trait); }
  .nav ul li:last-child a { border-bottom: 0; }
  .nav ul a[aria-current="page"] { border-bottom-color: var(--trait); color: var(--lumiere); }
}

/* ---------- Ouverture de l’accueil : l’emblème et son écho ---------- */
.ouverture {
  position: relative;
  min-height: 100svh;
  display: grid; place-items: center;
  padding: 5rem 1.5rem 6rem;
  overflow: hidden;
  background:
    radial-gradient(60% 45% at 50% 105%, rgba(212, 165, 103, .22), transparent 70%),
    radial-gradient(70% 60% at 50% 35%, #0d2236 0%, var(--nuit) 70%);
}
.echo { position: absolute; left: 50%; top: 31%; width: 0; height: 0; pointer-events: none; }
.echo span {
  position: absolute; left: 50%; top: 50%;
  width: 18rem; height: 18rem; margin: -9rem 0 0 -9rem;
  border-radius: 50%; border: 1px solid var(--acier);
  opacity: 0; transform: scale(.3);
  animation: onde 3.6s cubic-bezier(.2, .6, .3, 1) forwards;
}
.echo span:nth-child(2) { animation-delay: .5s; border-color: var(--ivoire); }
.echo span:nth-child(3) { animation-delay: 1s; }
.echo span:nth-child(4) { animation-delay: 1.5s; border-color: var(--lumiere); }
.echo.rejoue span { animation-name: onde-bis; }
@keyframes onde { 0% { opacity: 0; transform: scale(.3); } 15% { opacity: .55; } 100% { opacity: 0; transform: scale(5.5); } }
@keyframes onde-bis { 0% { opacity: 0; transform: scale(.3); } 15% { opacity: .55; } 100% { opacity: 0; transform: scale(5.5); } }
.ouverture-contenu { position: relative; text-align: center; }
.logo-bouton { border: 0; padding: 0; background: none; cursor: pointer; display: block; margin: 0 auto; }
.logo-bouton img { width: min(22rem, 62vw); filter: drop-shadow(0 0 40px rgba(141, 185, 216, .18)); }
.devise { margin-top: 2.5rem; font-size: clamp(1.05rem, 2.4vw, 1.3rem); color: var(--ivoire-doux); }
.devise strong { color: var(--ivoire); font-weight: 500; }
.descendre {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  width: 1px; height: 3.5rem; background: linear-gradient(var(--lumiere), transparent);
}

/* ---------- En-tête des pages intérieures ---------- */
.entete {
  position: relative; overflow: hidden;
  padding: 10rem 0 4.5rem;
  background:
    radial-gradient(55% 80% at 85% 0%, rgba(141, 185, 216, .14), transparent 70%),
    radial-gradient(40% 60% at 10% 110%, rgba(212, 165, 103, .14), transparent 70%),
    var(--nuit);
  border-bottom: 1px solid var(--trait);
}
.entete::after {
  /* les ondes de l’emblème, en filigrane */
  content: ""; position: absolute; right: -6rem; top: 50%; width: 30rem; height: 30rem; translate: 0 -50%;
  border-radius: 50%;
  background: repeating-radial-gradient(circle, transparent 0 2.4rem, rgba(141, 185, 216, .10) 2.4rem 2.5rem);
  pointer-events: none;
}
.entete h1 { font-size: clamp(3.6rem, 10vw, 7.5rem); max-width: 12ch; }
.entete p { margin-top: 1.25rem; max-width: var(--mesure); color: var(--ivoire-doux); font-size: 1.15rem; }

/* ---------- Sections communes ---------- */
.bloc { padding-block: 6rem; }
.bloc + .bloc { padding-top: 0; }
.bloc > .cadre > h2, .titre-bloc { font-size: clamp(2.6rem, 6vw, 4rem); color: var(--acier); margin-bottom: 2.5rem; }
.texte { max-width: var(--mesure); color: var(--ivoire-doux); }
.texte p + p { margin-top: 1.1rem; }
.texte strong { color: var(--ivoire); font-weight: 500; }

/* Le collectif : la photo, la voix */
.collectif { position: relative; min-height: 92svh; display: flex; align-items: flex-end; background: var(--charbon); }
.collectif img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 40%; }
.collectif::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, var(--nuit) 0%, rgba(7, 21, 34, 0) 28%, rgba(7, 21, 34, 0) 45%, rgba(7, 21, 34, .92) 88%);
}
.collectif-texte { position: relative; z-index: 1; width: 100%; max-width: var(--large); margin: 0 auto; padding: 0 1.5rem 4.5rem; }
.collectif h2 { font-size: clamp(4rem, 13vw, 10.5rem); max-width: 9ch; text-shadow: 0 4px 40px rgba(7, 21, 34, .6); }
.collectif p { margin-top: 1.25rem; max-width: var(--mesure); color: var(--ivoire-doux); }

/* Valeurs */
.valeurs-grille { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3rem; }
.valeur svg { width: 3.25rem; height: 3.25rem; margin-bottom: 1.25rem; }
.valeur h3 { font-size: 2.6rem; }
.valeur p { margin-top: .6rem; color: var(--ivoire-doux); max-width: 22rem; }

/* Manifeste, bloc ivoire */
.ivoire { background: var(--ivoire); color: var(--nuit); }
.ivoire a { color: var(--nuit); }
.manifeste-dedans { padding-block: 7rem; display: grid; grid-template-columns: 1fr 1.1fr; gap: 4rem; align-items: start; }
.manifeste h2 { font-size: clamp(3.4rem, 8vw, 6.5rem); }
.manifeste-texte p + p { margin-top: 1.1rem; }
.manifeste-texte p:first-child { font-size: 1.3rem; font-weight: 500; line-height: 1.45; }

/* Portes vers les autres pages (accueil) */
.portes { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--trait); }
.porte {
  display: block; padding: 2.5rem 1.5rem 2.75rem; text-decoration: none; color: var(--ivoire);
  border-right: 1px solid var(--trait); transition: background .25s;
}
.porte:last-child { border-right: 0; }
.porte:hover { background: rgba(141, 185, 216, .06); }
.porte h3 { font-size: 2.3rem; }
.porte p { margin-top: .5rem; color: var(--ivoire-doux); font-size: .95rem; }
.porte:hover h3 { color: var(--lumiere); }

/* Liste à deux colonnes : intitulé / explication */
.lignes { list-style: none; padding: 0; border-top: 1px solid var(--trait); }
.lignes li { display: grid; grid-template-columns: 16rem 1fr; gap: 2rem; padding: 1.6rem 0; border-bottom: 1px solid var(--trait); }
.lignes h3 { font-size: 2rem; color: var(--ivoire); }
.lignes.etroit li { grid-template-columns: 1fr; gap: .45rem; }
.lignes p { color: var(--ivoire-doux); max-width: var(--mesure); }

/* Titre à venir (musique) */
.titre-a-venir {
  display: grid; grid-template-columns: auto 1fr; gap: 2.5rem; align-items: center;
  padding: 2.5rem; border: 1px solid var(--trait); border-radius: 1.25rem;
  background: linear-gradient(120deg, rgba(141, 185, 216, .08), rgba(212, 165, 103, .06));
}
.pochette { width: 11rem; border-radius: .5rem; box-shadow: 0 20px 50px rgba(0, 0, 0, .45); }
.titre-a-venir h3 { font-size: 3rem; }
.titre-a-venir .etat { margin-top: .4rem; color: var(--lumiere); font-weight: 600; font-size: .95rem; }
.titre-a-venir p:last-child { margin-top: .9rem; color: var(--ivoire-doux); max-width: 30rem; }
.ondes { display: flex; align-items: center; gap: 3px; height: 2.5rem; margin-top: 1.25rem; }
.ondes i { display: block; width: 3px; border-radius: 2px; background: var(--acier); opacity: .55; }

/* Agenda : état vide */
.vide {
  text-align: center; padding: 4.5rem 1.5rem; border: 1px dashed rgba(141, 185, 216, .35); border-radius: 1.25rem;
}
.vide img { width: 4.5rem; margin: 0 auto 1.5rem; opacity: .85; }
.vide h2 { font-size: clamp(2.2rem, 5vw, 3.2rem); }
.vide p { margin: .9rem auto 0; max-width: 30rem; color: var(--ivoire-doux); }

/* Boutons */
.bouton {
  display: inline-block; margin-top: 1.75rem; padding: .85rem 1.6rem; border-radius: 2rem;
  background: var(--lumiere); color: var(--nuit); text-decoration: none; font-weight: 600; font-size: .98rem;
  border: 0; cursor: pointer; font-family: inherit;
}
.bouton:hover { background: var(--ivoire); }
.bouton.second { background: transparent; color: var(--ivoire); border: 1px solid var(--trait); margin-left: .5rem; }
.bouton.second:hover { border-color: var(--acier); }

/* Univers : galerie */
.galerie { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1.25rem; }
.galerie figure { margin: 0; }
.galerie img { width: 100%; border-radius: .6rem; background: var(--charbon); }
.galerie figcaption { margin-top: .7rem; font-size: .9rem; color: var(--ivoire-doux); }
.galerie figcaption strong { color: var(--ivoire); font-weight: 500; display: block; }
.g-large { grid-column: span 4; }
.g-moyen { grid-column: span 2; }
.g-demi { grid-column: span 3; }
.palette { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; }
.couleur { border-radius: .75rem; overflow: hidden; border: 1px solid var(--trait); }
.couleur div { height: 6rem; }
.couleur p { padding: .75rem .9rem; font-size: .9rem; color: var(--ivoire-doux); }
.couleur p strong { display: block; color: var(--ivoire); font-weight: 500; }
.polices { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-top: 3.5rem; }
.police-bebas { font-family: "Bebas Neue", sans-serif; font-size: 4rem; line-height: .95; }
.police-mont { font-size: 1.6rem; line-height: 1.35; }
.polices small { display: block; margin-top: .9rem; color: var(--ivoire-doux); font-size: .9rem; }

/* Contact : formulaire */
.contact-grille { display: grid; grid-template-columns: 1fr 1.2fr; gap: 4rem; align-items: start; }
.formulaire { display: grid; gap: 1.1rem; }
.formulaire label { display: grid; gap: .4rem; font-weight: 500; font-size: .95rem; }
.formulaire input, .formulaire select, .formulaire textarea {
  font: inherit; color: var(--ivoire); background: rgba(245, 238, 221, .04);
  border: 1px solid rgba(141, 185, 216, .3); border-radius: .6rem; padding: .8rem .95rem;
}
.formulaire select option { color: var(--nuit); }
.formulaire textarea { min-height: 9rem; resize: vertical; }
.formulaire input:focus, .formulaire select:focus, .formulaire textarea:focus { outline: none; border-color: var(--lumiere); }
.formulaire .bouton { justify-self: start; margin-top: .5rem; }
.formulaire .bouton:disabled { opacity: .7; cursor: default; }
.formulaire .aide.reussi { color: var(--lumiere); font-weight: 600; font-size: 1rem; }
.formulaire .aide.echec { color: #F2A39A; font-weight: 500; font-size: .95rem; }
.formulaire .aide { font-size: .85rem; color: var(--ivoire-doux); }

/* Clôture commune */
.suite {
  text-align: center; padding: 7rem 1.5rem 5.5rem;
  background: radial-gradient(50% 60% at 50% 100%, rgba(212, 165, 103, .18), transparent 70%);
}
.suite img { width: 5.5rem; margin: 0 auto 1.75rem; }
.suite h2 { font-size: clamp(2.8rem, 7vw, 4.5rem); }
.suite p { margin: 1rem auto 0; max-width: 30rem; color: var(--ivoire-doux); }

footer { border-top: 1px solid var(--trait); }
.pied { display: flex; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; padding-block: 1.75rem; font-size: .88rem; color: rgba(245, 238, 221, .55); }
.pied ul { list-style: none; padding: 0; display: flex; gap: 1.25rem; flex-wrap: wrap; }
.pied a { color: rgba(245, 238, 221, .7); text-decoration: none; }
.pied a:hover { color: var(--ivoire); }

@media (max-width: 860px) {
  .valeurs-grille, .manifeste-dedans, .contact-grille, .polices { grid-template-columns: 1fr; gap: 2.5rem; }
  .manifeste-dedans { padding-block: 5rem; }
  .bloc { padding-block: 4.5rem; }
  .portes { grid-template-columns: 1fr 1fr; }
  .porte:nth-child(2) { border-right: 0; }
  .porte { border-bottom: 1px solid var(--trait); }
  .lignes li { grid-template-columns: 1fr; gap: .5rem; }
  .titre-a-venir { grid-template-columns: 1fr; padding: 1.75rem; }
  .galerie { grid-template-columns: 1fr 1fr; }
  .g-large, .g-demi { grid-column: span 2; }
  .g-moyen { grid-column: span 1; }
  .palette { grid-template-columns: repeat(2, 1fr); }
  .entete { padding-top: 8rem; }
  .collectif img { object-position: 42% 30%; }
  .bouton.second { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .echo { display: none; }
  html { scroll-behavior: auto; }
}