/* Charte unifiée des sites du groupe UmanIA (07-CODE/IDENTITE/CHARTE-UNIFIEE-SITES-UMANIA-2026-10-03.md).
   Pages publiques seulement (classe .cu) : l'espace de travail des membres garde sa propre feuille. */
:root {
  --nuit: #170A36; --indigo: #2B1270; --violet: #7A2EFF; --lilas: #CDBBFF; --ia-sombre: #B98CFF;
  --ivoire: #F5F3FA; --encre-cu: #1C1533; --gris: #5B5470; --barre: #120829;
  --filet: #DCD3F2; --filet-sombre: rgba(205, 187, 255, .22);
  --ouverture: radial-gradient(120% 90% at 85% 40%, #3A1690 0%, #170A36 58%);
  --finale: linear-gradient(160deg, #170A36 0%, #22105A 70%, #2B1270 100%);
}
.cu { min-height: 100vh; display: flex; flex-direction: column; background: #fff; color: var(--encre-cu);
  font-family: 'DM Sans', system-ui, sans-serif; font-size: 17px; line-height: 1.65; overflow-x: clip; }
.cu *, .cu *::before, .cu *::after { box-sizing: border-box; }
.cu [data-l][hidden], .cu [hidden] { display: none !important; }
.cu h1, .cu h2, .cu h3 { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; letter-spacing: -.01em;
  text-transform: none; margin: 0; color: inherit; }
.cu h1 { font-size: clamp(48px, 7.4vw, 104px); line-height: .98; }
.cu h2 { font-size: clamp(38px, 4.6vw, 60px); line-height: 1.04; }
.cu h3 { font-size: clamp(26px, 3vw, 44px); line-height: 1.08; }
:where(.cu) p { margin: 0 0 1em; }
:where(.cu) a { color: inherit; }
.cu a:focus-visible, .cu button:focus-visible, .cu input:focus-visible, .cu select:focus-visible,
.cu textarea:focus-visible { outline: 2px solid var(--lilas); outline-offset: 3px; border-radius: 4px; }
.cu .ia { color: var(--violet); }
.cu-sombre .ia, .cu-entete .ia, .cu-ouverture .ia, .cu-finale .ia, .cu-pied .ia { color: var(--ia-sombre); }
.cu-enveloppe { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 28px; }

/* En-tête */
.cu-entete { background: var(--nuit); color: #fff; border-bottom: 1px solid var(--filet-sombre); position: relative; z-index: 3; }
.cu-entete .cu-enveloppe { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  padding-top: 16px; padding-bottom: 16px; }
.cu-marque { display: inline-flex; align-items: center; gap: 12px; white-space: nowrap; text-decoration: none; color: #fff;
  font-family: 'Instrument Serif', Georgia, serif; font-size: 30px; line-height: 1; }
.cu-marque img { width: 40px; height: 40px; border-radius: 10px; }
.cu-nav { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 15px; }
.cu-nav a { color: #EDE8FF; text-decoration: none; }
.cu-nav a:hover, .cu-nav a[aria-current="page"] { color: #fff; text-decoration: underline; text-decoration-color: var(--lilas);
  text-underline-offset: 4px; }

/* Bouton de langue (pastille, drapeaux) */
.cu-langue { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 999px;
  border: 1.5px solid rgba(255, 255, 255, .5); background: rgba(23, 10, 54, .55); color: #fff;
  font: 600 14px/1 'DM Sans', system-ui, sans-serif; cursor: pointer; }
.cu-langue:hover { border-color: #fff; background: rgba(23, 10, 54, .8); }
.cu-langue svg { width: 22px; height: 14px; border-radius: 2px; display: block; }

/* Boutons et liens */
.cu-btn { display: inline-block; padding: 16px 28px; border-radius: 999px; font-weight: 600; font-size: 16px;
  text-decoration: none; border: 0; cursor: pointer; font-family: inherit; line-height: 1.2; }
.cu-btn--principal, .cu-nav a.cu-btn--principal { background: #fff; color: var(--nuit); text-decoration: none; }
.cu-btn--principal:hover, .cu-nav a.cu-btn--principal:hover { background: var(--lilas); color: var(--nuit); text-decoration: none; }
.cu-btn--contour { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, .55); }
.cu-btn--contour:hover { border-color: #fff; }
.cu-btn--petit { padding: 10px 18px; font-size: 14px; }
.cu-btn--violet { background: var(--violet); color: #fff; }
.cu-btn--violet:hover { background: var(--indigo); }
.cu-lien { font-weight: 600; color: var(--indigo); text-decoration: none; border-bottom: 1.5px solid var(--violet); padding-bottom: 2px; }
.cu-lien:hover { color: var(--violet); }
.cu-sombre .cu-lien, .cu-finale .cu-lien, .cu-pied .cu-lien { color: #fff; border-bottom-color: var(--lilas); }

/* Ouverture */
.cu-ouverture { background: var(--ouverture); color: #fff; padding: 110px 0 100px; overflow: hidden; }
.cu-ouverture .cu-enveloppe { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.cu-ouverture h1 { color: #fff; }
.cu-chapeau { margin-top: 30px; max-width: 34em; font-size: 19px; color: #E6DEFF; }
.cu-lieu { margin-top: 22px; font-size: 15px; color: var(--lilas); }
.cu-actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.cu-art { width: 100%; max-width: 520px; justify-self: end; display: block; }
.cu-anneau { fill: none; stroke: var(--lilas); opacity: 0; animation: cuAnneau 1.6s ease-out forwards; }
.cu-anneau:nth-of-type(2) { animation-delay: .25s; } .cu-anneau:nth-of-type(3) { animation-delay: .5s; }
.cu-anneau:nth-of-type(4) { animation-delay: .75s; }
.cu-onde rect { fill: var(--lilas); transform-box: fill-box; transform-origin: center; transform: scaleY(.08);
  animation: cuOnde 1.2s cubic-bezier(.2, .8, .2, 1) forwards; }
@keyframes cuAnneau { to { opacity: var(--o, .35); } }
@keyframes cuOnde { to { transform: scaleY(1); } }

/* Sections claires : titre à gauche, introduction à droite, rangées séparées par des filets */
.cu-claire { background: var(--ivoire); padding: 100px 0; }
.cu-blanche { background: #fff; padding: 100px 0; }
.cu-tete { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: end; margin-bottom: 48px; }
.cu-tete h2 { color: var(--nuit); }
.cu-tete p { color: var(--gris); max-width: 30em; margin: 0; }
.cu-rangee { display: grid; grid-template-columns: 1fr 1.25fr; gap: 48px; padding: 36px 0; border-top: 1px solid var(--filet); }
.cu-rangee:last-child { border-bottom: 1px solid var(--filet); }
.cu-rangee h3 { color: var(--nuit); font-size: clamp(30px, 3.2vw, 42px); }
.cu-rangee p { max-width: 34em; margin: 0; }
.cu-signature { margin-top: 8px; color: var(--violet); font-size: 16px; }

/* Finale sombre (appel à l'action, formulaire) */
.cu-finale { background: var(--finale); color: #fff; padding: 110px 0 100px; }
.cu-finale h2 { color: #fff; max-width: 13em; }
.cu-finale .cu-intro { margin-top: 22px; max-width: 36em; font-size: 19px; color: #E6DEFF; }
.cu-colonnes { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; margin-top: 56px; align-items: start; }

/* Champs sur fond sombre */
.cu-form p { margin: 0 0 16px; display: flex; flex-direction: column; gap: 6px; }
.cu-form label { font-size: 15px; color: #EDE8FF; font-weight: 500; }
.cu-form input[type="text"], .cu-form input[type="email"], .cu-form input[type="tel"], .cu-form select, .cu-form textarea {
  width: 100%; background: rgba(255, 255, 255, .05); border: 1px solid rgba(205, 187, 255, .28); border-radius: 12px;
  color: #fff; padding: 13px 14px; font: inherit; font-size: 16px; }
.cu-form select option { color: var(--encre-cu); }
.cu-form input:focus, .cu-form select:focus, .cu-form textarea:focus { outline: 2px solid var(--lilas); outline-offset: 1px; border-color: var(--lilas); }
.cu-form .cu-case { flex-direction: row; align-items: flex-start; gap: 10px; }
.cu-form .cu-case input { margin-top: 5px; width: 18px; height: 18px; accent-color: var(--violet); flex-shrink: 0; }
.cu-form .cu-case label { font-weight: 400; }
.cu-aide { font-size: 14px; color: #D9CFFF; }
.cu-aide a { color: #fff; }
.cu-erreur { color: #FFC2D1; font-size: 14px; }
.cu-piege { position: absolute; left: -9999px; }
.cu-encadre { border: 1px solid var(--filet-sombre); border-left: 4px solid var(--lilas); border-radius: 12px; padding: 22px 24px; }
.cu-encadre h3 { font-size: 34px; margin-bottom: 10px; }

/* Pages de texte (conditions, politiques, contact) */
.cu-page { flex: 1; background: #fff; }
.cu-page__tete { background: var(--ouverture); color: #fff; padding: 72px 0 56px; }
.cu-page__tete h1 { font-size: clamp(40px, 5.6vw, 72px); line-height: 1.02; color: #fff; }
.cu-page__corps { max-width: 820px; margin: 0 auto; padding: 56px 28px 80px; }
.cu-page__corps--large { max-width: 1180px; }
.cu-avis-en { background: var(--ivoire); border-left: 4px solid var(--violet); border-radius: 10px; padding: 14px 18px; margin-bottom: 28px; font-size: 15px; }
.cu .texte-legal h1 { display: none; }
.cu .texte-legal h2 { font-size: clamp(28px, 3vw, 38px); color: var(--nuit); margin: 44px 0 12px; padding-top: 18px; border-top: 1px solid var(--filet); }
.cu .texte-legal h3 { font-size: 26px; color: var(--nuit); margin: 28px 0 8px; }
.cu .texte-legal li { margin-bottom: 8px; }
.cu .texte-legal a, .cu-page__corps a:not(.cu-btn) { color: var(--indigo); font-weight: 600; text-decoration-color: var(--violet); text-underline-offset: 3px; }
.cu .sommaire { background: var(--ivoire); border-radius: 12px; padding: 18px 22px; }

/* Pied de page commun */
.cu-pied { color: #fff; background: var(--finale); }
.cu-pied__contact { padding: 96px 0 72px; border-bottom: 1px solid var(--filet-sombre); }
.cu-pied__contact .cu-enveloppe { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.cu-pied__contact h2 { color: #fff; font-size: clamp(40px, 5vw, 68px); }
.cu-pied__lede { margin-top: 18px; color: #E6DEFF; font-size: 19px; }
.cu-pied__coord { margin-top: 22px; line-height: 1.9; color: #EDE8FF; }
.cu-pied__coord a { color: #fff; font-weight: 600; text-decoration: none; }
.cu-reseaux { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.cu-reseaux a { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 999px;
  border: 1.5px solid rgba(205, 187, 255, .45); color: #fff; text-decoration: none; font-size: 14px; font-weight: 600; }
.cu-reseaux a:hover { border-color: #fff; }
.cu-pied__bas { padding: 56px 0; }
.cu-pied__bas .cu-enveloppe { display: grid; grid-template-columns: 1.2fr 1fr 1.2fr; gap: 48px; }
.cu-pied__marque img { width: 56px; height: 56px; border-radius: 14px; }
.cu-pied__nom { font-family: 'Instrument Serif', Georgia, serif; font-size: 34px; line-height: 1.05; margin-top: 14px; }
.cu-pied__slogan { color: var(--lilas); margin-top: 4px; }
.cu-pied__lieu { color: #D9CFFF; font-size: 15px; margin-top: 12px; }
.cu-pied h3 { font-size: 26px; color: var(--lilas); margin-bottom: 12px; }
.cu-pied ul { list-style: none; margin: 0; padding: 0; }
.cu-pied ul li { padding: 6px 0; }
.cu-pied ul a { color: #EDE8FF; text-decoration: none; }
.cu-pied ul a:hover { color: #fff; text-decoration: underline; text-decoration-color: var(--lilas); }
.cu-pied .cu-form p { margin-bottom: 12px; }
.cu-barre { background: var(--barre); border-top: 1px solid var(--filet-sombre); font-size: 14px; color: #CFC4F0; }
.cu-barre .cu-enveloppe { display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; }
.cu-barre a { color: #EDE8FF; }
.cu-barre nav { display: flex; flex-wrap: wrap; gap: 6px 16px; }

@media (max-width: 900px) {
  .cu-ouverture .cu-enveloppe, .cu-tete, .cu-rangee, .cu-colonnes, .cu-pied__contact .cu-enveloppe,
  .cu-pied__bas .cu-enveloppe { grid-template-columns: 1fr; }
  .cu-art { justify-self: center; max-width: 380px; }
  .cu-ouverture { padding: 72px 0 64px; }
  .cu-claire, .cu-blanche { padding: 72px 0; } .cu-finale { padding: 80px 0; }
  .cu-rangee { gap: 12px; } .cu-tete { gap: 16px; } .cu-colonnes { gap: 40px; }
}
@media (max-width: 480px) {
  .cu-enveloppe { padding: 0 18px; } .cu { font-size: 16px; }
  .cu-page__corps { padding: 40px 18px 64px; }
  .cu-marque { font-size: 25px; } .cu-marque img { width: 34px; height: 34px; }
  .cu-nav { gap: 12px; font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .cu-anneau { animation: none; opacity: var(--o, .35); }
  .cu-onde rect { animation: none; transform: none; }
}

/* Écrans d'authentification : mêmes couleurs, mêmes titres */
.entree__marque { background: var(--ouverture) !important; }
.entree__marque h1 { font-family: 'Instrument Serif', Georgia, serif !important; font-weight: 400 !important; font-size: clamp(40px, 4.4vw, 60px) !important; line-height: 1.02; }
.entree__marque .ia, .entree__marque .lettre-ia { color: var(--ia-sombre); }
.cu-etapes { list-style: none; margin: 0; padding: 0; counter-reset: e; }
.cu-etapes li { counter-increment: e; display: grid; grid-template-columns: 52px 1fr; gap: 6px; padding: 14px 0;
  border-top: 1px solid var(--filet-sombre); color: #EDE8FF; }
.cu-etapes li:last-child { border-bottom: 1px solid var(--filet-sombre); }
.cu-etapes li::before { content: counter(e); font-family: 'Instrument Serif', Georgia, serif; font-size: 34px; line-height: 1; color: var(--lilas); }
.cu-etapes strong { color: #fff; font-weight: 600; }
.cu-page__corps.public__contenu--large { max-width: 1180px; }
.entree__marque .marque { font-family: 'Instrument Serif', Georgia, serif; font-weight: 400; font-size: 30px; letter-spacing: 0; color: #fff; }
.entree__marque .marque .ia { color: var(--ia-sombre); }
.entree__form button[type="submit"], .entree__form .bouton { background: var(--violet); border-radius: 999px; }
.cu-avis-langue { background: var(--ivoire); color: var(--encre-cu); border-bottom: 1px solid var(--filet); font-size: 14px; }
.cu-avis-langue .cu-enveloppe { padding-top: 10px; padding-bottom: 10px; }
.cu-barre .cu-langue-officielle { flex-basis: 100%; margin: 0; font-size: 13px; color: #B8ABE0; }