/* ===== IA HERO ===== */
.ia-hero {
  background: var(--navy);
  color: var(--cream);
  min-height: 95vh;
  padding: 5rem 2rem 0;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.ia-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 10% 15%, rgba(245, 193, 61, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 90% 85%, rgba(245, 193, 61, 0.07) 0%, transparent 50%);
  pointer-events: none;
}

.ia-hero-bg-text {
  position: absolute;
  bottom: -4vw;
  right: -2vw;
  font-family: var(--display);
  font-size: clamp(12rem, 32vw, 38rem);
  font-weight: 200;
  font-style: italic;
  line-height: 0.85;
  letter-spacing: -0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(244, 239, 227, 0.06);
  pointer-events: none;
  white-space: nowrap;
  z-index: 0;
  user-select: none;
}

.ia-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 2rem;
}

.ia-hero-meta {
  display: flex;
  gap: 2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(244, 239, 227, 0.5);
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.ia-hero-meta span { display: inline-flex; align-items: center; gap: 0.5rem; }
.ia-hero-meta span::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--yellow);
  border-radius: 50%;
}

.ia-hero-title {
  font-family: var(--display);
  font-size: clamp(3.2rem, 9vw, 10.5rem);
  font-weight: 240;
  line-height: 0.9;
  letter-spacing: -0.045em;
  color: var(--cream);
  margin-bottom: 2.5rem;
}
.ia-em {
  font-style: italic;
  font-weight: 280;
}
.ia-yellow-hl {
  position: relative;
  display: inline-block;
  color: var(--yellow);
  z-index: 1;
}

/* Word reveal animation */
.ia-mask {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
  padding: 0.05em 0;
}
.ia-word {
  display: inline-block;
  transform: translateY(110%);
  animation: ia-word-up 1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.ia-hero-title .ia-mask:nth-child(1) .ia-word { animation-delay: 0.05s; }
.ia-hero-title .ia-mask:nth-child(2) .ia-word { animation-delay: 0.14s; }
.ia-hero-title .ia-mask:nth-child(3) .ia-word { animation-delay: 0.23s; }
.ia-hero-title .ia-mask:nth-child(4) .ia-word { animation-delay: 0.32s; }
@keyframes ia-word-up { to { transform: translateY(0); } }

.ia-hero-sub {
  font-size: 1.2rem;
  color: rgba(244, 239, 227, 0.68);
  max-width: 580px;
  margin-bottom: 2.5rem;
  line-height: 1.55;
  opacity: 0;
  transform: translateY(20px);
  animation: ia-fade-up 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.65s forwards;
}
.ia-hero-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  animation: ia-fade-up 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.85s forwards;
}
@keyframes ia-fade-up { to { opacity: 1; transform: translateY(0); } }

.ia-btn-ghost {
  background: transparent;
  border-color: rgba(244, 239, 227, 0.35);
  color: var(--cream);
}
.ia-btn-ghost::before { background: rgba(244, 239, 227, 0.12); }
.ia-btn-ghost:hover { color: var(--cream); border-color: rgba(244, 239, 227, 0.6); }

.ia-hero-foot {
  position: relative;
  z-index: 2;
  max-width: 1600px;
  margin: 4rem auto 0;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(244, 239, 227, 0.12);
}
.ia-stat {
  padding: 2rem 1.5rem 2.5rem;
  border-right: 1px solid rgba(244, 239, 227, 0.1);
  opacity: 0;
  transform: translateY(15px);
  animation: ia-fade-up 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.ia-stat:nth-child(1) { animation-delay: 1.0s; }
.ia-stat:nth-child(2) { animation-delay: 1.1s; }
.ia-stat:nth-child(3) { animation-delay: 1.2s; }
.ia-stat:nth-child(4) { animation-delay: 1.3s; border-right: none; }
.ia-stat-num {
  font-family: var(--display);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 280;
  letter-spacing: -0.04em;
  color: var(--cream);
  line-height: 0.95;
  display: block;
  margin-bottom: 0.75rem;
}
.ia-stat-num em {
  font-style: italic;
  color: var(--yellow);
  font-weight: 280;
}
.ia-stat-lab {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: rgba(244, 239, 227, 0.55);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.5;
}

/* ===== MARQUEE ===== */
.ia-marquee {
  background: var(--yellow);
  padding: 2rem 0;
  overflow: hidden;
  position: relative;
  z-index: 2;
}
.ia-marquee-track {
  display: inline-flex;
  gap: 4rem;
  white-space: nowrap;
  animation: tick 28s linear infinite;
  font-family: var(--display);
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  font-weight: 200;
  font-style: italic;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--navy);
}
.ia-marquee-track span { display: inline-flex; align-items: center; gap: 4rem; }
.ia-marquee-track .star {
  color: var(--navy);
  opacity: 0.4;
  font-style: normal;
  font-family: var(--grotesque);
  font-weight: 300;
  font-size: 1.4rem;
}

/* ===== URGENCE ===== */
.ia-urgence {
  background: var(--cream-light);
  padding: 9rem 2rem;
  border-top: 1px solid var(--border);
}
.ia-urgence-header {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  margin-bottom: 5rem;
  align-items: end;
}
.ia-urgence-header p {
  font-size: 1.1rem;
  color: var(--text-soft);
  line-height: 1.6;
  max-width: 520px;
}
.ia-urgence-header strong {
  font-weight: 700;
  color: var(--navy);
}

.ia-urgence-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--border);
}
.ia-urgence-card {
  padding: 3rem 2rem 2.5rem;
  border-right: 1px solid var(--border);
  position: relative;
  background: var(--cream-light);
  transition: background 0.4s;
  cursor: default;
}
.ia-urgence-card:last-child { border-right: none; }
.ia-urgence-card:hover { background: var(--cream); }
.ia-urgence-accent {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--yellow);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.ia-urgence-card:hover .ia-urgence-accent { transform: scaleX(1); }
.ia-urgence-num {
  font-family: var(--display);
  font-size: clamp(3rem, 5.5vw, 5rem);
  font-weight: 270;
  letter-spacing: -0.04em;
  color: var(--navy);
  line-height: 0.95;
  display: block;
  margin-bottom: 1.5rem;
}
.ia-urgence-num em {
  font-style: italic;
  color: var(--yellow);
}
.ia-urgence-card h4 {
  font-family: var(--display);
  font-size: 1.3rem;
  font-weight: 350;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--navy);
  margin-bottom: 0.85rem;
}
.ia-urgence-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
  line-height: 1.6;
}
.ia-urgence-source {
  margin-top: 2.5rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-soft);
  opacity: 0.7;
  display: block;
  text-align: right;
}

/* ===== HORIZON ===== */
.ia-horizon {
  background: var(--navy-deep);
  color: var(--cream);
  padding: 9rem 2rem;
  position: relative;
  overflow: hidden;
}
.ia-horizon::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 75% 20%, rgba(245, 193, 61, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 25% 80%, rgba(245, 193, 61, 0.05) 0%, transparent 50%);
  pointer-events: none;
}
.ia-horizon .container { position: relative; z-index: 2; }
.ia-horizon .section-label { color: var(--yellow); }
.ia-horizon .section-label .num { color: var(--yellow); }
.ia-horizon .section-label::after { background: var(--yellow); opacity: 0.4; }

.ia-horizon-header {
  max-width: 900px;
  margin-bottom: 5rem;
}
.ia-horizon-h2 {
  font-family: var(--display);
  font-size: clamp(3.2rem, 8vw, 8.5rem);
  font-weight: 240;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--cream);
  margin-bottom: 2rem;
}
.ia-horizon-h2 em { font-style: italic; color: var(--yellow); }
.ia-horizon-lead {
  font-size: 1.15rem;
  color: rgba(244, 239, 227, 0.65);
  max-width: 680px;
  line-height: 1.6;
}

.ia-horizon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(244, 239, 227, 0.1);
  border: 1px solid rgba(244, 239, 227, 0.1);
  margin-bottom: 5rem;
}
.ia-horizon-card {
  background: var(--navy-deep);
  padding: 3rem 2rem 2.5rem;
  position: relative;
  overflow: hidden;
  transition: background 0.4s;
  cursor: default;
}
.ia-horizon-card:hover { background: var(--navy-mid); }
.ia-horizon-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 2px;
  height: 0;
  background: var(--yellow);
  transition: height 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.ia-horizon-card:hover::after { height: 100%; }

.ia-horizon-num {
  font-family: var(--display);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--yellow);
  margin-bottom: 1.25rem;
  font-weight: 350;
  letter-spacing: 0.05em;
}
.ia-horizon-icon {
  font-size: 1.8rem;
  color: rgba(244, 239, 227, 0.2);
  margin-bottom: 1.25rem;
  line-height: 1;
  transition: color 0.3s;
}
.ia-horizon-card:hover .ia-horizon-icon { color: var(--yellow); }
.ia-horizon-card h4 {
  font-family: var(--display);
  font-size: 1.55rem;
  font-weight: 350;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.15;
  color: var(--cream);
}
.ia-horizon-card p {
  color: rgba(244, 239, 227, 0.65);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}
.ia-horizon-tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--yellow);
  padding: 0.3rem 0.65rem;
  border: 1px solid rgba(245, 193, 61, 0.35);
  border-radius: 100px;
  display: inline-block;
}

.ia-horizon-bottom {
  border-top: 1px solid rgba(244, 239, 227, 0.1);
  padding-top: 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 900px;
}
.ia-horizon-quote {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 280;
  color: var(--cream);
  line-height: 1.3;
  letter-spacing: -0.02em;
}
.ia-horizon-source {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(244, 239, 227, 0.45);
}

/* ===== APPROCHE ===== */
.ia-approche {
  background: var(--cream);
  padding: 9rem 2rem;
  border-top: 1px solid var(--border);
}
.ia-approche-header {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  margin-bottom: 5rem;
  align-items: end;
}
.ia-approche-header p {
  font-size: 1.1rem;
  color: var(--text-soft);
  max-width: 520px;
  line-height: 1.6;
}

.ia-piliers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
  margin-bottom: 6rem;
}
.ia-pilier {
  padding: 4rem 2rem 4rem 0;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s;
}
.ia-pilier:nth-child(2n) { border-right: none; padding-left: 2rem; padding-right: 0; }
.ia-pilier:hover { background: rgba(245, 193, 61, 0.07); }
.ia-pilier-num {
  font-family: var(--display);
  font-style: italic;
  font-weight: 280;
  font-size: clamp(3rem, 5vw, 4.5rem);
  color: var(--yellow);
  line-height: 1;
  display: block;
  margin-bottom: 1.5rem;
  letter-spacing: -0.04em;
}
.ia-pilier h4 {
  font-family: var(--display);
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  font-weight: 350;
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  color: var(--navy);
}
.ia-pilier p {
  color: var(--text-soft);
  font-size: 0.98rem;
  line-height: 1.6;
  max-width: 480px;
}

/* Formations IA */
.ia-formations {
  border: 1px solid var(--border);
  overflow: hidden;
}
.ia-formations-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-soft);
  padding: 1.25rem 2rem;
  background: var(--cream-light);
  border-bottom: 1px solid var(--border);
}
.ia-formations-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.ia-formation-item {
  padding: 2.5rem 1.75rem;
  border-right: 1px solid var(--border);
  transition: background 0.3s;
}
.ia-formation-item:last-child { border-right: none; }
.ia-formation-item:hover { background: var(--cream-light); }
.ia-formation-badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--yellow);
  background: rgba(245, 193, 61, 0.12);
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
  display: inline-block;
  margin-bottom: 1rem;
}
.ia-formation-item h5 {
  font-family: var(--display);
  font-size: 1.1rem;
  font-weight: 350;
  font-style: italic;
  color: var(--navy);
  letter-spacing: -0.015em;
  margin-bottom: 1.25rem;
  line-height: 1.2;
}
.ia-formation-item ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.ia-formation-item ul li {
  font-size: 0.85rem;
  color: var(--text-soft);
  line-height: 1.45;
  padding-left: 1rem;
  position: relative;
}
.ia-formation-item ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--yellow);
  font-size: 0.75rem;
}

/* ===== OUTILS ===== */
.ia-outils {
  background: var(--cream-light);
  padding: 9rem 2rem;
  border-top: 1px solid var(--border);
}
.ia-outils-header {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  margin-bottom: 5rem;
  align-items: end;
}
.ia-outils-header p {
  font-size: 1.1rem;
  color: var(--text-soft);
  max-width: 520px;
  line-height: 1.6;
}

.ia-outils-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  margin-bottom: 2.5rem;
}
.ia-outils-cat {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}
.ia-outils-cat:nth-child(3n) { border-right: none; }
.ia-outils-cat:nth-child(4), .ia-outils-cat:nth-child(5), .ia-outils-cat:nth-child(6) { border-bottom: none; }
.ia-outils-cat:hover { background: var(--cream); }
.ia-cat-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 1.25rem;
  display: block;
}
.ia-cat-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* Reuse .ai-tool from main.css but override for light background */
.ia-outils .ai-tool {
  border-color: rgba(26, 37, 64, 0.2);
  color: var(--navy);
  font-size: 0.68rem;
  transition: all 0.25s;
}
.ia-outils .ai-tool:hover {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--cream);
}

.ia-outils-note {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 2rem;
  background: rgba(245, 193, 61, 0.08);
  border: 1px solid rgba(245, 193, 61, 0.25);
  max-width: 780px;
  margin: 0 auto;
}
.ia-outils-note-icon {
  color: var(--yellow);
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}
.ia-outils-note p {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--navy);
  line-height: 1.5;
  letter-spacing: -0.01em;
}

/* ===== CTA ===== */
.ia-cta {
  background: var(--yellow);
  color: var(--navy);
  padding: 9rem 2rem;
  position: relative;
  overflow: hidden;
}
.ia-cta::before {
  content: '';
  position: absolute;
  top: -15%; right: -8%;
  width: 55%; height: 130%;
  background: var(--navy);
  transform: rotate(-10deg);
  opacity: 0.04;
  pointer-events: none;
}
.ia-cta-inner {
  max-width: 1600px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.ia-cta-label {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy);
  opacity: 0.6;
  margin-bottom: 1.5rem;
}
.ia-cta-label .num { color: var(--navy); font-weight: 700; opacity: 1; }
.ia-cta-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--navy);
  opacity: 0.2;
  max-width: 80px;
}
.ia-cta-inner h2 {
  font-family: var(--display);
  font-size: clamp(3.5rem, 9vw, 9rem);
  font-weight: 240;
  line-height: 0.92;
  letter-spacing: -0.04em;
  margin-bottom: 2.5rem;
  max-width: 1100px;
}
.ia-cta-inner h2 em { font-style: italic; }
.ia-cta-inner p {
  font-size: 1.15rem;
  max-width: 580px;
  margin-bottom: 3rem;
  line-height: 1.55;
  color: var(--navy-deep);
  opacity: 0.85;
}
.ia-cta-actions {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}
.ia-cta-inner .btn-primary {
  font-size: 1rem;
  padding: 1rem 2rem;
}
.ia-cta-inner .btn {
  font-size: 1rem;
  padding: 1rem 2rem;
  background: transparent;
  border-color: var(--navy);
  color: var(--navy);
}
.ia-cta-inner .btn::before { background: var(--navy); }
.ia-cta-inner .btn:hover { color: var(--cream); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .ia-urgence-header,
  .ia-approche-header,
  .ia-outils-header { grid-template-columns: 1fr; gap: 2rem; }
  .ia-hero-foot { grid-template-columns: repeat(2, 1fr); }
  .ia-stat:nth-child(2) { border-right: none; }
  .ia-stat:nth-child(1), .ia-stat:nth-child(2) { border-bottom: 1px solid rgba(244, 239, 227, 0.1); }
  .ia-urgence-grid { grid-template-columns: repeat(2, 1fr); }
  .ia-urgence-card:nth-child(2) { border-right: none; }
  .ia-urgence-card:nth-child(1), .ia-urgence-card:nth-child(2) { border-bottom: 1px solid var(--border); }
  .ia-horizon-grid { grid-template-columns: repeat(2, 1fr); }
  .ia-piliers { grid-template-columns: 1fr; }
  .ia-pilier, .ia-pilier:nth-child(2n) { border-right: none; padding: 3rem 0; }
  .ia-formations-grid { grid-template-columns: repeat(2, 1fr); }
  .ia-formation-item:nth-child(2) { border-right: none; }
  .ia-formation-item:nth-child(1), .ia-formation-item:nth-child(2) { border-bottom: 1px solid var(--border); }
  .ia-formation-item:nth-child(3), .ia-formation-item:nth-child(4) { border-bottom: none; }
  .ia-outils-grid { grid-template-columns: repeat(2, 1fr); }
  .ia-outils-cat:nth-child(3n) { border-right: 1px solid var(--border); }
  .ia-outils-cat:nth-child(2n) { border-right: none; }
  .ia-outils-cat:nth-child(5) { border-bottom: none; }
  .ia-outils-cat:nth-child(4) { border-bottom: 1px solid var(--border); }
}
@media (max-width: 700px) {
  .ia-hero { padding: 3rem 1.25rem 0; min-height: 80vh; }
  .ia-urgence, .ia-horizon, .ia-approche, .ia-outils, .ia-cta {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  .ia-hero-foot { grid-template-columns: 1fr 1fr; }
  .ia-stat:nth-child(1), .ia-stat:nth-child(2) { border-bottom: 1px solid rgba(244, 239, 227, 0.1); }
  .ia-stat:nth-child(3) { border-right: none; }
  .ia-urgence-grid { grid-template-columns: 1fr; }
  .ia-urgence-card { border-right: none; border-bottom: 1px solid var(--border); }
  .ia-urgence-card:last-child { border-bottom: none; }
  .ia-horizon-grid { grid-template-columns: 1fr; }
  .ia-piliers { grid-template-columns: 1fr; }
  .ia-formations-grid { grid-template-columns: 1fr; }
  .ia-formation-item { border-right: none; border-bottom: 1px solid var(--border); }
  .ia-formation-item:last-child { border-bottom: none; }
  .ia-outils-grid { grid-template-columns: 1fr; }
  .ia-outils-cat { border-right: none !important; }
  .ia-cta-actions { flex-direction: column; }
}