/* a2i-ia.css — Page IA no-code du site Intégrateur d'Alias.
   Préfixe: a2i-ia-
   Style : suit l'esprit de l'accueil (substrat vivant, glass cards, reveals).
   Composants génériques (timeline, TOC, .a2i-terme, .a2i-media) sont
   dans a2i-commun.css — ce fichier ne contient que le spécifique page IA. */

/* ═══ Hero IA ═══ */

.a2i-ia-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 80px 24px 48px;
  position: relative;
}

.a2i-ia-hero__brand {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--a2-corp-green-light);
  margin: 0 0 24px;
  text-transform: uppercase;
  position: relative;
}

.a2i-ia-hero__brand::before,
.a2i-ia-hero__brand::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40px;
  height: 1px;
}

.a2i-ia-hero__brand::before {
  right: 100%;
  margin-right: 14px;
  background: linear-gradient(90deg, transparent, var(--a2-corp-green-light));
}

.a2i-ia-hero__brand::after {
  left: 100%;
  margin-left: 14px;
  background: linear-gradient(90deg, var(--a2-corp-green-light), transparent);
}

.a2i-ia-hero__title {
  font-size: clamp(1.4rem, 3.4vw, 2.4rem);
  font-weight: 600;
  margin: 0 0 24px;
  max-width: 780px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, #fff 0%, #cbd5e1 50%, var(--a2-corp-green-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: a2i-shimmer 8s ease-in-out infinite;
}

/* ═══ Sections — aérées comme l'accueil ═══ */

.a2i-ia-section {
  max-width: 860px;
  margin: 0 auto;
  padding: 72px 24px;
  scroll-margin-top: 80px;
}

.a2i-ia-section--narrow {
  max-width: 720px;
}

.a2i-ia-section__titre {
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  font-weight: 600;
  color: #e2e8f0;
  margin: 0 0 28px;
  letter-spacing: 0.01em;
  line-height: 1.3;
}

.a2i-ia-section__intro {
  font-size: 0.92rem;
  color: #cbd5e1;
  line-height: 1.8;
  margin: 0 0 24px;
  font-weight: 400;
}

.a2i-ia-section__texte {
  font-size: 0.86rem;
  color: #94a3b8;
  line-height: 1.75;
  margin: 0 0 18px;
}

.a2i-ia-section__texte strong {
  color: #e2e8f0;
  font-weight: 600;
}

/* Citation / encadré important */
.a2i-ia-citation {
  font-size: 0.9rem;
  color: #cbd5e1;
  line-height: 1.8;
  padding: 20px 28px;
  border-left: 3px solid var(--a2-corp-green-light);
  background: linear-gradient(90deg, rgba(23, 129, 33, 0.06), transparent 80%);
  border-radius: 0 10px 10px 0;
  margin: 0 0 24px;
}

.a2i-ia-citation strong {
  color: var(--a2-corp-green-light);
  font-weight: 600;
}

/* ═══ Section 0 — Encadré définitions ═══ */

.a2i-ia-defs {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 24px 80px;
  scroll-margin-top: 80px;
}

.a2i-ia-defs__cadre {
  padding: 32px 32px 28px;
  border: 1px solid var(--a2-corporate-border);
  border-radius: 16px;
  background:
    radial-gradient(ellipse 70% 80% at 50% 0%, rgba(102, 126, 234, 0.10), transparent 70%),
    linear-gradient(160deg, rgba(20, 20, 30, 0.6), rgba(12, 12, 20, 0.4));
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.a2i-ia-defs__label {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--a2-corporate-2);
  margin: 0 0 24px;
  text-align: center;
}

.a2i-ia-def {
  padding: 20px 0;
  border-bottom: 1px solid rgba(102, 126, 234, 0.10);
}

.a2i-ia-def:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.a2i-ia-def__terme {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--a2-corp-green-light);
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}

.a2i-ia-def__corps {
  font-size: 0.84rem;
  color: #94a3b8;
  line-height: 1.7;
  margin: 0;
}

.a2i-ia-def__corps strong {
  color: #cbd5e1;
  font-weight: 600;
}

/* Phrase charnière */
.a2i-ia-charniere {
  max-width: 680px;
  margin: 0 auto;
  padding: 16px 24px 72px;
  text-align: center;
}

.a2i-ia-charniere__texte {
  font-size: 0.86rem;
  color: #64748b;
  line-height: 1.75;
  font-style: italic;
  margin: 0;
}

/* ═══ Section 1 — Opposition bicolore ═══ */

.a2i-ia-opposition {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 28px 0 0;
}

.a2i-ia-opp {
  padding: 28px 26px;
  border-radius: 14px;
  border: 1px solid;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.35s;
}

.a2i-ia-opp:hover {
  transform: translateY(-3px);
}

/* Bloc traditionnelle — rouge atténué */
.a2i-ia-opp--trad {
  border-color: rgba(239, 68, 68, 0.18);
  background: linear-gradient(160deg, rgba(30, 16, 16, 0.5), rgba(20, 12, 12, 0.3));
}

.a2i-ia-opp--trad:hover {
  box-shadow: 0 10px 32px rgba(239, 68, 68, 0.12);
}

/* Bloc Alias2Avatar — vert corporate */
.a2i-ia-opp--alias {
  border-color: var(--a2-corp-green-border);
  background: linear-gradient(160deg, rgba(16, 30, 18, 0.5), rgba(12, 20, 14, 0.3));
}

.a2i-ia-opp--alias:hover {
  box-shadow: 0 10px 32px rgba(23, 129, 33, 0.18);
}

.a2i-ia-opp__label {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 14px;
}

.a2i-ia-opp--trad .a2i-ia-opp__label {
  color: #f87171;
}

.a2i-ia-opp--alias .a2i-ia-opp__label {
  color: var(--a2-corp-green-light);
}

.a2i-ia-opp__texte {
  font-size: 0.84rem;
  color: #94a3b8;
  line-height: 1.7;
  margin: 0;
}

.a2i-ia-opp--alias .a2i-ia-opp__texte {
  color: #cbd5e1;
}

/* La card Alias2Avatar (avec sceau) reste alignée à gauche */
.a2i-ia-opp--with-seal .a2i-ia-opp__texte {
  text-align: left;
  -webkit-hyphens: manual;
  hyphens: manual;
}

/* ═══ Sceau Alias2Avatar — à cheval sur le bord droit de la card ═══ */
/* Le symbole du logo (orbites + avatar) recadré en cercle, placé à
   l'extrémité droite de la card « IA Alias2Avatar », à cheval sur le
   bord (moitié intérieur, moitié extérieur). Panneau noir profond,
   halo vert lumineux. La card garde son layout ; padding-right réserve
   la place pour que le texte ne passe jamais sous le sceau. */

.a2i-ia-opp--with-seal {
  position: relative;
  overflow: visible;
  padding-right: 90px;
}

.a2i-show-seal {
  position: absolute;
  top: 50%;
  right: -44px;
  transform: translateY(-50%);
  z-index: 5;
  width: 88px;
  height: 88px;
  border-radius: 50%;
  overflow: hidden;
  background: #07070b;
  border: 1px solid var(--a2-corp-green-border);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 0 16px rgba(134, 239, 172, 0.18),
    0 0 32px rgba(102, 126, 234, 0.10),
    0 6px 20px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  -webkit-user-select: none;
  user-select: none;
}

.a2i-show-seal svg {
  display: block;
  width: 100%;
  height: 100%;
}

@media (max-width: 760px) {
  .a2i-ia-opp--with-seal {
    padding-right: 64px;
  }

  .a2i-show-seal {
    width: 64px;
    height: 64px;
    right: -32px;
  }
}

/* ═══ Section 3 — Timeline d'étapes verticale ═══ */

.a2i-ia-etapes {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

/* Ligne verticale de fond */
.a2i-ia-etapes::before {
  content: '';
  position: absolute;
  top: 32px;
  bottom: 64px;
  left: 28px;
  width: 2px;
  background: linear-gradient(180deg,
    var(--a2-corp-green-border) 0%,
    var(--a2-corporate-border) 50%,
    var(--a2-corporate-border) 100%);
  border-radius: 1px;
}

.a2i-ia-etape {
  position: relative;
  padding: 0 0 40px 64px;
}

.a2i-ia-etape:last-child {
  padding-bottom: 0;
}

/* Numéro sur la ligne */
.a2i-ia-etape__num {
  position: absolute;
  top: 0;
  left: 12px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--a2-corporate-grad);
  color: white;
  font-size: 0.76rem;
  font-weight: 600;
  z-index: 1;
  border: 2px solid #07070b;
  box-shadow: 0 0 12px var(--a2-corporate-glow);
  transition: transform 0.3s, box-shadow 0.3s;
}

.a2i-ia-etape:hover .a2i-ia-etape__num {
  transform: scale(1.12);
  box-shadow: 0 0 18px var(--a2-corporate-glow);
}

.a2i-ia-etape__corps {
  padding: 22px 26px;
  background: linear-gradient(160deg, rgba(20, 20, 30, 0.5), rgba(12, 12, 20, 0.3));
  border: 1px solid var(--a2-corporate-border);
  border-radius: 12px;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.a2i-ia-etape:hover .a2i-ia-etape__corps {
  border-color: var(--a2-corporate-2);
  box-shadow: 0 8px 24px var(--a2-corporate-glow);
}

.a2i-ia-etape__titre {
  font-size: 0.94rem;
  font-weight: 600;
  color: #e2e8f0;
  margin: 0 0 12px;
  line-height: 1.35;
}

.a2i-ia-etape__texte {
  font-size: 0.84rem;
  color: #94a3b8;
  line-height: 1.7;
  margin: 0;
}

.a2i-ia-etape__texte em {
  color: var(--a2-corp-green-light);
  font-style: normal;
  font-weight: 600;
}

/* Clôture étapes */
.a2i-ia-cloture {
  max-width: 680px;
  margin: 0 auto;
  padding: 16px 24px 72px;
  text-align: center;
}

.a2i-ia-cloture__texte {
  font-size: 0.9rem;
  color: var(--a2-corp-green-light);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0;
  padding: 16px 28px;
  border: 1px solid var(--a2-corp-green-border);
  border-radius: 10px;
  background: var(--a2-corp-green-bg);
  display: inline-block;
}

/* ═══ Section 4 — Blocs usage (Perso / B2B|B2C) ═══ */

.a2i-ia-usages {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 28px 0 0;
}

.a2i-ia-usage {
  padding: 30px 28px;
  border-radius: 14px;
  border: 1px solid var(--a2-corporate-border);
  background: linear-gradient(160deg, rgba(20, 20, 30, 0.5), rgba(12, 12, 20, 0.3));
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.35s, box-shadow 0.35s;
}

.a2i-ia-usage:hover {
  transform: translateY(-3px);
  border-color: var(--a2-corporate-2);
  box-shadow: 0 10px 32px var(--a2-corporate-glow);
}

.a2i-ia-usage--b2b:hover {
  border-color: var(--a2-corp-green-border);
  box-shadow: 0 10px 32px rgba(23, 129, 33, 0.18);
}

.a2i-ia-usage__label {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--a2-corporate-2);
  margin: 0 0 14px;
}

.a2i-ia-usage--b2b .a2i-ia-usage__label {
  color: var(--a2-corp-green-light);
}

.a2i-ia-usage__texte {
  font-size: 0.84rem;
  color: #94a3b8;
  line-height: 1.7;
  margin: 0;
}

.a2i-ia-usage__texte strong {
  color: #e2e8f0;
  font-weight: 600;
}

/* ═══ Sections 5/6 — blocs compacts centrés ═══ */

.a2i-ia-bloc {
  max-width: 680px;
  margin: 0 auto;
  padding: 72px 24px;
  text-align: center;
  scroll-margin-top: 80px;
}

.a2i-ia-bloc__texte {
  font-size: 0.9rem;
  color: #cbd5e1;
  line-height: 1.8;
  margin: 0;
}

.a2i-ia-bloc__texte strong {
  color: var(--a2-corp-green-light);
  font-weight: 600;
}

/* Section 7 — brevets, une ligne */
.a2i-ia-brevets {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 24px 80px;
  text-align: center;
  scroll-margin-top: 80px;
}

.a2i-ia-brevets__texte {
  font-size: 0.78rem;
  color: #475569;
  letter-spacing: 0.04em;
  margin: 0;
  padding: 12px 24px;
  border-top: 1px solid var(--a2-corporate-border);
  border-bottom: 1px solid var(--a2-corporate-border);
  display: inline-block;
}

/* ═══ Séparateurs de section ═══ */

.a2i-ia-separateur {
  max-width: 120px;
  margin: 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--a2-corporate-border), transparent);
  border: none;
}

/* ═══ Responsive ═══ */

@media (max-width: 760px) {
  .a2i-ia-hero {
    padding: 56px 18px 36px;
  }

  .a2i-ia-section {
    padding: 48px 18px;
  }

  .a2i-ia-defs {
    padding: 24px 18px 56px;
  }

  .a2i-ia-defs__cadre {
    padding: 24px 20px 20px;
  }

  .a2i-ia-opposition,
  .a2i-ia-usages {
    grid-template-columns: 1fr;
  }

  .a2i-ia-etapes {
    padding: 24px 18px 48px;
  }

  .a2i-ia-etapes::before {
    left: 18px;
  }

  .a2i-ia-etape {
    padding-left: 52px;
  }

  .a2i-ia-etape__num {
    left: 2px;
  }

  .a2i-ia-bloc {
    padding: 48px 18px;
  }
}

/* ═══ Reduced motion ═══ */

@media (prefers-reduced-motion: reduce) {
  .a2i-ia-hero__title {
    animation: none;
  }

  .a2i-ia-opp,
  .a2i-ia-usage,
  .a2i-ia-etape__corps,
  .a2i-ia-etape__num {
    transition: none;
  }
}

/* ═══════════════════════════════════════════════════ */
/* ═══ Bandes vives — sectionnement page IA (style C1) ═══ */
/* ═══════════════════════════════════════════════════ */
/* Chaque section majeure a une bande de fond colorée
   pleine largeur (alternance violet / vert / anthracite),
   avec quadrillage + numéro de section proéminent.
   Remplace les anciens .a2i-ia-section uniformes + <hr>. */

.a2i-ia-band {
  position: relative;
  padding: 56px 24px 56px;
  scroll-margin-top: 80px;
  overflow: hidden;
  border-top: 1px solid var(--a2-corporate-border);
  border-bottom: 1px solid var(--a2-corporate-border);
}

/* Bande violette (corporate) */
.a2i-ia-band--violet {
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, rgba(102, 126, 234, 0.12), transparent 70%),
    linear-gradient(180deg, rgba(96, 7, 130, 0.06) 0%, rgba(12, 12, 20, 0.3) 100%);
}

/* Bande verte (corporate green) */
.a2i-ia-band--vert {
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, rgba(23, 129, 33, 0.10), transparent 70%),
    linear-gradient(180deg, rgba(23, 129, 33, 0.05) 0%, rgba(12, 12, 20, 0.3) 100%);
}

/* Bande neutre (anthracite, comme roadmap-fond) */
.a2i-ia-band--neutre {
  background: linear-gradient(180deg, #0f0f17 0%, #14141c 100%);
}

/* Quadrillage fin sur bandes colorées */
.a2i-ia-band--violet::before,
.a2i-ia-band--vert::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(102, 126, 234, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 126, 234, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.a2i-ia-band--vert::before {
  background-image:
    linear-gradient(rgba(134, 239, 172, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(134, 239, 172, 0.04) 1px, transparent 1px);
}

.a2i-ia-band__inner {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
}

.a2i-ia-band__inner--narrow {
  max-width: 720px;
}

/* Tête de bande : numéro + label + titre */
.a2i-ia-band__tete {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin: 0 0 28px;
}

.a2i-ia-band__num {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  background: var(--a2-corporate-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  flex-shrink: 0;
}

.a2i-ia-band--vert .a2i-ia-band__num {
  background: linear-gradient(135deg, var(--a2-corp-green), var(--a2-corp-green-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.a2i-ia-band__label {
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--a2-corporate-2);
  margin: 0 0 4px;
}

.a2i-ia-band--vert .a2i-ia-band__label {
  color: var(--a2-corp-green-light);
}

.a2i-ia-band__titre {
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  font-weight: 600;
  color: #e2e8f0;
  margin: 0;
  line-height: 1.3;
}

/* Texte dans une bande — réutilise .a2i-ia-section__texte existant */
.a2i-ia-band .a2i-ia-section__texte {
  margin: 0 0 18px;
}

.a2i-ia-band .a2i-ia-section__intro {
  margin: 0 0 24px;
}

/* Bande responsive */
@media (max-width: 760px) {
  .a2i-ia-band {
    padding: 40px 18px;
  }

  .a2i-ia-band__num {
    font-size: 1.8rem;
  }

  .a2i-ia-band__tete {
    gap: 12px;
  }
}

/* ═══════════════════════════════════════════════════ */
/* ═══ Vidéo vitrine — cadre vivant (étape 4) ═══ */
/* ═══════════════════════════════════════════════════ */
/* Texte → vidéo dessous, avec chrome compact, scan lumineux,
   parallaxe 3D au survol, glow de bordure.
   S'appuie sur a2i-video.css (vitrine + lightbox génériques). */

.a2i-media--cadre-vivant {
  max-width: 560px;
  margin: 28px auto;
  perspective: 1200px;
}
.a2i-media__frame--video-vivant {
  padding: 0;
  overflow: visible;
  border-color: var(--a2-corporate-border);
  transition: border-color 0.4s, box-shadow 0.4s;
}
.a2i-media__frame--video-vivant:hover {
  border-color: var(--a2-corporate-2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 32px var(--a2-corporate-glow);
}
.a2i-media__frame--video-vivant .a2i-vitrine__ecran {
  border-bottom: none;
  border-radius: 0 0 13px 13px;
}
.a2i-vitrine__chrome--compact {
  padding: 8px 14px;
}