/* =============================================================================
   pages/offre.css · Page Offre.
     1. Bandeau IA (seconde vidéo de marque)
     2. Positionnement
     3. Les quatre piliers détaillés
     4. Le parcours en six leviers
     5. Principe de fin de page
   ========================================================================== */

/* --- 1. Bandeau IA ---------------------------------------------------------------- */

.ai-film {
  padding: clamp(56px, 7vw, 80px) 0 var(--section-y);
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(0, 1.28fr);
  align-items: center;
  gap: clamp(40px, 6vw, 100px);
  border-bottom: 1px solid var(--line);
}

.ai-film h2 { font-size: var(--fs-h2); }
.ai-film h2 span { color: #81adf2; }

.ai-film__copy p {
  max-width: 54ch;
  margin-top: 24px;
  color: var(--ink-muted);
  font-size: clamp(1rem, 1.15vw, 1.0625rem);
  line-height: 1.76;
}

.ai-film__copy ul { margin-top: 28px; }

.ai-film .frame {
  min-height: 540px;
  transform: perspective(1200px) rotateY(-3deg);
}

.ai-film .frame video { position: absolute; inset: 0; object-fit: contain; }

.ai-film .frame::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  content: "";
  pointer-events: none;
  background:
    linear-gradient(120deg, rgba(5, 19, 45, 0.35), transparent 42%),
    radial-gradient(circle at center, transparent 34%, rgba(1, 5, 15, 0.44) 94%);
}

@media (max-width: 1080px) {
  .ai-film { grid-template-columns: 1fr; }
  .ai-film .frame { min-height: 480px; transform: none; }
}

@media (max-width: 620px) {
  .ai-film .frame { min-height: 260px; border-radius: var(--radius-lg); }
}

/* Sans animation, le cadre garde une présence visuelle sans emprunter
   l'image d'affiche de la vidéo du hero. */
@media (prefers-reduced-motion: reduce) {
  .ai-film .frame {
    min-height: 320px;
    background:
      radial-gradient(circle at 50% 45%, rgba(23, 104, 255, 0.28), transparent 20rem),
      var(--navy-900);
  }
}

/* --- 2. Positionnement ------------------------------------------------------------- */

.positioning { padding: var(--section-y-sm) 0 var(--section-y); }
.positioning .rail > * span { color: var(--accent); font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; }
.positioning .rail h2 { font-size: var(--fs-h3); letter-spacing: var(--tracking-display); line-height: 1.08; }
.positioning .rail p { color: var(--ink-muted); font-size: var(--fs-body); line-height: 1.65; }

/* --- 3. Piliers détaillés ------------------------------------------------------------ */

.offer-details { padding-bottom: var(--section-y); }

/* Chaque levier est un bloc nettement séparé : filet en haut, marque de couleur,
   et un numéro impossible à manquer. */
.offer-card {
  position: relative;
  padding: clamp(56px, 7vw, 96px) 0;
  display: grid;
  grid-template-columns: 190px minmax(0, 1.05fr) minmax(280px, 0.65fr);
  gap: clamp(28px, 4vw, 56px);
  border-top: 1px solid var(--line-strong);
  scroll-margin-top: 120px;
}

.offer-card::before {
  position: absolute;
  top: -2px;
  left: 0;
  width: 88px;
  height: 3px;
  content: "";
  background: var(--gradient-brand);
  border-radius: 2px;
}

.offer-card__head { display: flex; flex-direction: column; gap: 10px; }

.offer-card__num {
  display: block;
  color: transparent;
  background: var(--gradient-title);
  -webkit-background-clip: text;
  background-clip: text;
  font-size: clamp(3.4rem, 6vw, 5rem);
  font-weight: 660;
  letter-spacing: var(--tracking-display);
  line-height: 0.85;
  font-variant-numeric: tabular-nums;
}

.offer-card__step {
  color: var(--ink);
  font-size: 1.3rem;
  font-weight: 620;
  letter-spacing: -0.03em;
}

.offer-card__label {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  line-height: 1.45;
  text-transform: uppercase;
}

.offer-card__intro h2 { font-size: var(--fs-h2); letter-spacing: var(--tracking-display); line-height: 1; }

.offer-card__intro p {
  max-width: 60ch;
  margin-top: 22px;
  color: var(--ink-muted);
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.72;
}

.offer-card__cta {
  width: fit-content;
  max-width: 100%;
  margin-top: 28px;
  line-height: 1.35;
  white-space: normal;
}

.offer-card:focus-within::before,
.offer-card:hover::before {
  width: min(180px, 35%);
}

.offer-card::before { transition: width var(--dur-mid) var(--ease); }

.offer-card__deliverables li:first-child { padding-top: 0; }

.offer-card .case { grid-column: 2 / -1; }

@media (max-width: 980px) {
  .offer-card { grid-template-columns: 150px 1fr; }
  .offer-card__deliverables,
  .offer-card .case { grid-column: 2; }
}

@media (max-width: 680px) {
  .offer-card { grid-template-columns: 1fr; gap: 26px; }
  .offer-card__head {
    flex-direction: row;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 6px 16px;
  }
  .offer-card__num { font-size: 3rem; }
  .offer-card__deliverables,
  .offer-card .case { grid-column: 1; }
  .offer-card__cta { width: 100%; justify-content: space-between; }
}

/* --- 4. Le parcours en six leviers ------------------------------------------------------
   La progression Décider → Fluidifier → Construire → Accélérer → Rayonner →
   Transmettre. Six colonnes reliées par un filet, qui se replie proprement. */

.path__heading { max-width: 62ch; }
.path__heading h2 { font-size: clamp(2.4rem, 5vw, 4rem); letter-spacing: var(--tracking-display); line-height: 1; }
.path__heading p { max-width: 60ch; margin-top: 22px; color: var(--ink-muted); font-size: clamp(1rem, 1.2vw, 1.125rem); line-height: 1.72; }

.path__list {
  position: relative;
  margin-top: clamp(44px, 5vw, 70px);
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 20px;
}

/* Le filet qui relie les six étapes, derrière les numéros. */
.path__list::before {
  position: absolute;
  z-index: 0;
  top: 21px;
  right: 6%;
  left: 6%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, var(--blue-ink), var(--paper-accent), rgba(7, 116, 154, 0.15));
}

.path__step {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.path__num {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: #f4fbff;
  border-radius: 50%;
  background: var(--blue-ink);
  /* L'anneau clair masque le filet derrière le numéro. */
  box-shadow: 0 0 0 5px #eef6ff, 0 8px 20px rgba(17, 86, 214, 0.28);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
}

.path__verb { font-size: 1.15rem; font-weight: 650; letter-spacing: -0.03em; }
.path__question { color: var(--ink-muted); font-size: var(--fs-small); line-height: 1.5; }
.path__step a { margin-top: auto; padding-top: 12px; }

@media (max-width: 1080px) {
  .path__list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px 20px; }
  .path__list::before { display: none; }
}

@media (max-width: 620px) {
  .path__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 420px) {
  .path__list { grid-template-columns: 1fr; }
}

/* --- 5. Principe --------------------------------------------------------------------- */

.offer-principle {
  margin-top: var(--section-y-sm);
  display: grid;
  grid-template-columns: 0.5fr 1.5fr;
  align-items: center;
  gap: clamp(32px, 5vw, 80px);
}

.offer-principle > img {
  width: min(100%, 300px);
  opacity: 0.82;
  filter: drop-shadow(0 0 50px rgba(32, 213, 223, 0.28));
}

.offer-principle h2 { font-size: var(--fs-h2); }

.offer-principle p {
  max-width: 66ch;
  margin-top: 24px;
  color: var(--ink-muted);
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.72;
}

@media (max-width: 680px) {
  .offer-principle { grid-template-columns: 1fr; }
  .offer-principle > img { width: 150px; }
}