/* ============================================================
   sections.css — un bloc par section de la landing.
   Ordre : hero, problemes, offre, methode, ecosysteme,
   pourqui, about, contact.
   ============================================================ */

/* ============================================================
   HERO — asymétrique (titre 58% / photo 42%)
   ============================================================ */

.hero {
  position: relative;
  padding: 6rem var(--section-pad-x) 5.5rem;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}
.hero::after {
  content: '';
  position: absolute;
  top: 30%;
  right: 10%;
  width: 520px;
  height: 380px;
  background: radial-gradient(ellipse at center, var(--accent-dim) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 5rem;
  align-items: center;
}

.hero-copy { max-width: 620px; }

.hero-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 1.05;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.01em;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
  display: block;
}

.hero-sub {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 0 2.25rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
}
.trust {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.trust::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: block;
  flex-shrink: 0;
}

/* Cadre photo asymétrique */
.hero-portrait {
  position: relative;
  width: 100%;
  max-width: 420px;
  margin-left: auto;
  aspect-ratio: 4 / 5;
}
.hero-portrait::before {
  content: '';
  position: absolute;
  inset: -16px -16px auto auto;
  width: 100%;
  height: 100%;
  border: 1px solid var(--accent-border);
  pointer-events: none;
  transition: inset 0.45s var(--ease-premium), border-color 0.45s var(--ease-premium);
}
.hero-portrait:hover::before {
  inset: -24px -24px auto auto;
  border-color: rgba(201, 168, 76, 0.55);
}
.hero-portrait .frame {
  position: relative;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #0d1b2a 0%, #1a2d42 100%);
  overflow: hidden;
  z-index: 1;
}
.hero-portrait img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  z-index: 1;
}
.hero-portrait img.failed { display: none; }
.portrait-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(5rem, 10vw, 8rem);
  letter-spacing: 0.04em;
  color: var(--accent);
  background: linear-gradient(135deg, #0d1b2a 0%, #1a2d42 100%);
  pointer-events: none;
  z-index: 0;
}

/* ============================================================
   1. PROBLÈME — 3 cards grid avec numéros watermark
   ============================================================ */

.section-problemes .section-head { text-align: center; }

.prob-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  max-width: var(--container-max);
  margin: 0 auto;
}
.prob-card {
  background: var(--bg-card);
  padding: 2.75rem 2rem 2.5rem;
  position: relative;
  transition: background var(--dur-mid) var(--ease-premium);
}
.prob-card:hover { background: var(--bg-card-hover); }
.prob-num {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  font-size: 5.5rem;
  line-height: 1;
  color: var(--accent-watermark);
  margin-bottom: 0.5rem;
  display: block;
}
.prob-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 1.3rem;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}
.prob-body {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-muted);
}

/* ============================================================
   2. OFFRE — 3 cards (celle du milieu featured navy)
   ============================================================ */

.section-offre { background: var(--bg-secondary); }

.offre-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  max-width: var(--container-max);
  margin: 0 auto;
}
.offre-card {
  background: var(--bg-card);
  padding: 2.75rem 2rem;
  position: relative;
  display: flex;
  flex-direction: column;
}
.offre-card.featured {
  background: #0d1b2a;
  color: var(--text-on-navy-mid);
}
.offre-card.featured .offre-step  { color: var(--accent-light); }
.offre-card.featured .offre-title { color: var(--text-on-navy); }
.offre-card.featured .offre-tag   { color: rgba(201, 168, 76, 0.7); }
.offre-card.featured .offre-list  { color: rgba(200, 212, 224, 0.85); }
.offre-card.featured .offre-list li::before { background: var(--accent); }
.offre-card.featured .offre-list strong { color: var(--text-on-navy); }

.offre-step {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.85rem;
}
.offre-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 1.55rem;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 0.55rem;
}
.offre-tag {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.offre-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-body);
  margin: 0;
  padding: 0;
}
.offre-list li {
  position: relative;
  padding-left: 1.1rem;
}
.offre-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}
.offre-list strong {
  font-weight: 600;
  color: var(--text-primary);
  display: block;
  margin-bottom: 0.15rem;
}

/* ============================================================
   3. MÉTHODE — 4 colonnes reliées par une fine ligne or
   ============================================================ */

.methode-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
  padding-top: 2rem;
}
.methode-grid::before {
  content: '';
  position: absolute;
  top: 4.25rem;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--accent-border) 12%,
    var(--accent-border) 88%,
    transparent 100%
  );
  pointer-events: none;
}
.methode-step {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  position: relative;
  text-align: left;
}
.methode-num {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  font-size: 3.2rem;
  line-height: 1;
  color: var(--accent-watermark);
}
.methode-dot {
  position: absolute;
  top: 4.25rem;
  left: 0;
  width: 9px;
  height: 9px;
  background: var(--accent);
  border: 2px solid var(--bg-primary);
  border-radius: 50%;
  transform: translate(-1px, -4px);
}
.methode-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 1.25rem;
  line-height: 1.3;
  color: var(--text-primary);
  margin-top: 0.75rem;
}
.methode-body {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ============================================================
   4. ÉCOSYSTÈME — grille de 7 cards (4 puis 3)
   ============================================================ */

.section-ecosysteme { background: var(--bg-secondary); }

.eco-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  max-width: var(--container-max);
  margin: 0 auto;
}
.eco-grid > .eco-card:nth-child(n + 5) {
  /* La 2e ligne contient 3 cards, on les pousse pour qu'elles soient
     centrées visuellement en occupant un slot vide à gauche. */
}
.eco-grid > .eco-card:nth-child(5) { grid-column: 1 / span 2; }
.eco-grid > .eco-card:nth-child(6) { grid-column: 3 / span 1; }
.eco-grid > .eco-card:nth-child(7) { grid-column: 4 / span 1; }

.eco-card {
  background: var(--bg-card);
  padding: 2rem 1.75rem;
  position: relative;
  transition: background var(--dur-mid) var(--ease-premium);
  overflow: hidden;
}
.eco-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-premium);
}
.eco-card:hover { background: var(--bg-card-hover); }
.eco-card:hover::before { transform: scaleX(1); }
.eco-name {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}
.eco-role {
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ============================================================
   5. POUR QUI — 2 grandes cards navy
   ============================================================ */

.pourqui-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  max-width: var(--container-max);
  margin: 0 auto;
}
.card-navy {
  background: #0d1b2a;
  color: var(--text-on-navy-mid);
  padding: 2.75rem 2.25rem;
  position: relative;
  overflow: hidden;
}
.card-navy::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease-premium);
}
.card-navy:hover::after { transform: scaleX(1); }
.navy-tag {
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.navy-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 1.45rem;
  line-height: 1.3;
  color: var(--text-on-navy);
  margin-bottom: 1.25rem;
}
.navy-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: rgba(200, 212, 224, 0.85);
  margin: 0;
  padding: 0;
}
.navy-list li {
  position: relative;
  padding-left: 1rem;
}
.navy-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

/* ============================================================
   6. À PROPOS — photo 320px + bio
   ============================================================ */

.section-about { background: var(--bg-secondary); }

.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
}
.about-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
}
.about-frame::before {
  content: '';
  position: absolute;
  inset: -14px -14px auto auto;
  width: 100%;
  height: 100%;
  border: 1px solid var(--accent-border);
  pointer-events: none;
  transition: inset 0.45s var(--ease-premium), border-color 0.45s var(--ease-premium);
}
.about-frame:hover::before {
  inset: -22px -22px auto auto;
  border-color: rgba(201, 168, 76, 0.55);
}
.about-frame .frame {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(135deg, #0d1b2a 0%, #1a2d42 100%);
  z-index: 1;
}
.about-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
.about-frame img.failed { display: none; }
.about-frame .portrait-fallback {
  font-size: clamp(3.5rem, 7vw, 5rem);
}

.about-eyebrow { color: var(--accent); }
.about-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}
.about-body {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-body);
  margin: 1.5rem 0 2rem;
  max-width: 580px;
}
.about-body p + p { margin-top: 1rem; }
.about-points {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2rem;
  margin: 0;
  padding: 0;
}
.about-points li {
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
}
.about-pt-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}
.about-pt-sub {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* ============================================================
   7. CONTACT — section pleine navy
   ============================================================ */

.section-contact {
  background: var(--bg-tertiary);
  color: var(--text-on-navy-mid);
  text-align: center;
  border-bottom: 0;
}
.section-contact .eyebrow { color: var(--accent); justify-content: center; }
.section-contact .section-title { color: var(--text-on-navy); }
.section-contact .section-title em { color: var(--accent-light); }
.contact-inner {
  max-width: 720px;
  margin: 0 auto;
}
.contact-sub {
  color: rgba(200, 212, 224, 0.85);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 560px;
  margin: 1rem auto 2.5rem;
}
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: center;
}
.section-contact .btn.ghost {
  border-color: rgba(201, 168, 76, 0.3);
  color: rgba(200, 212, 224, 0.85);
}
.section-contact .btn.ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(201, 168, 76, 0.08);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  .hero { padding: 5rem var(--section-pad-x) 4.5rem; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  .hero-portrait {
    max-width: 360px;
    margin: 0 auto;
  }
  .about-grid {
    grid-template-columns: 280px 1fr;
    gap: 3rem;
  }
  .methode-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem 2rem;
  }
  .methode-grid::before { display: none; }
  .methode-dot { display: none; }
  .eco-grid { grid-template-columns: repeat(2, 1fr); }
  .eco-grid > .eco-card { grid-column: auto !important; }
}

@media (max-width: 768px) {
  .hero { padding: 4rem 1.25rem 3.5rem; }
  .hero-title { font-size: clamp(2.2rem, 9vw, 3.4rem); }
  .hero-portrait { max-width: 300px; }

  .prob-grid,
  .offre-grid,
  .pourqui-grid {
    grid-template-columns: 1fr;
  }
  .methode-grid { grid-template-columns: 1fr; gap: 2.25rem; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-frame {
    max-width: 240px;
    margin: 0 auto;
  }
  .about-points { grid-template-columns: 1fr; }

  .eco-grid { grid-template-columns: 1fr; }
}

@media (max-width: 375px) {
  .hero-title { font-size: 2rem; }
  .prob-num { font-size: 4rem; }
  .methode-num { font-size: 2.6rem; }
  .hero-cta .btn { width: 100%; }
}