/* ============================================================
   WHY CHOOSE US — Pourquoi choisir Connect Web
   Inspiré de Supabase "Why AI Builders choose Supabase"
   BEM prefix : wcu
   ============================================================ */

/* --- Section ---------------------------------------------- */
.wcu {
  background: var(--color-card);
  padding:    var(--space-20) 0;
  transition: background var(--transition-slow);
  border-top: 1px solid var(--color-border-subtle);
}

/* --- Container -------------------------------------------- */
.wcu__container {
  width:          100%;
  max-width:      var(--container-xl);
  margin-inline:  auto;
  padding-inline: var(--space-6);
}

@media (min-width: 768px)  { .wcu__container { padding-inline: var(--space-10); } }
@media (min-width: 1280px) { .wcu__container { padding-inline: var(--space-16); } }

/* --- En-tête centré --------------------------------------- */
.wcu__header {
  text-align:    center;
  max-width:     600px;
  margin-inline: auto;
  margin-bottom: var(--space-16);
}

.wcu__title {
  font-size:      var(--text-4xl);
  font-weight:    var(--font-weight-bold);
  line-height:    1.1;
  letter-spacing: -0.025em;
  color:          var(--color-text);
  margin-bottom:  var(--space-4);
  transition:     color var(--transition-slow);
}

.wcu__subtitle {
  font-size:   var(--text-lg);
  line-height: var(--line-height-base);
  color:       var(--color-text-muted);
  margin:      0;
}

@media (max-width: 767px) {
  .wcu__title { font-size: var(--text-3xl); }
}

/* --- Grille 3 colonnes ------------------------------------ */
.wcu__grid {
  display:               grid;
  grid-template-columns: 1fr;
  gap:                   var(--space-8);
}

@media (min-width: 768px) {
  .wcu__grid {
    grid-template-columns: repeat(3, 1fr);
    gap:                   0;
  }
}

/* ============================================================
   ITEM
   ============================================================ */
.wcu__item {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-5);
  padding:        var(--space-8) var(--space-6);
  position:       relative;
  transition:     background var(--transition-base);
}

/* Séparateur vertical entre colonnes (tablet/desktop) */
@media (min-width: 768px) {
  .wcu__item:not(:last-child)::after {
    content:   '';
    position:  absolute;
    right:     0;
    top:       var(--space-8);
    bottom:    var(--space-8);
    width:     1px;
    background: var(--color-border-subtle);
    transition: background var(--transition-base);
  }

  .wcu__item:hover::after {
    background: var(--color-accent-subtle);
  }
}

/* Hover background subtil */
.wcu__item:hover {
  background: var(--color-bg);
}

/* --- Icône ------------------------------------------------ */
.wcu__item-icon {
  color:       var(--color-accent);
  transition:
    color      var(--transition-base),
    transform  var(--transition-base);
  width:       40px;
  height:      40px;
}

.wcu__item:hover .wcu__item-icon {
  transform: translateY(-2px);
}

/* --- Ligne décorative ------------------------------------- */
.wcu__item-line {
  width:         40px;
  height:        2px;
  background:    var(--color-border);
  border-radius: var(--radius-full);
  transition:
    width      0.3s ease,
    background var(--transition-base);
}

.wcu__item:hover .wcu__item-line {
  width:      64px;
  background: var(--color-accent);
}

/* --- Titre ------------------------------------------------ */
.wcu__item-title {
  font-size:   var(--text-xl);
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  color:       var(--color-text);
  margin:      0;
  transition:  color var(--transition-fast);
}

.wcu__item:hover .wcu__item-title {
  color: var(--color-accent);
}

/* --- Description ------------------------------------------ */
.wcu__item-desc {
  font-size:   var(--text-base);
  line-height: var(--line-height-relaxed);
  color:       var(--color-text-secondary);
  margin:      0;
}

/* ============================================================
   ANIMATIONS D'ENTRÉE (IntersectionObserver)
   ============================================================ */
.wcu__header,
.wcu__item {
  opacity:    0;
  transform:  translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.wcu__header             { transition-delay: 0.00s; transition-duration: 0.6s; }
.wcu__item:nth-child(1)  { transition-delay: 0.10s; }
.wcu__item:nth-child(2)  { transition-delay: 0.20s; }
.wcu__item:nth-child(3)  { transition-delay: 0.30s; }

.wcu--visible .wcu__header,
.wcu--visible .wcu__item {
  opacity:   1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .wcu__header,
  .wcu__item {
    opacity:    1 !important;
    transform:  none !important;
    transition: none !important;
  }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 767px) {
  .wcu { padding: var(--space-16) 0; }

  .wcu__header   { margin-bottom: var(--space-10); }

  .wcu__item {
    padding: var(--space-6) var(--space-4);
    border-bottom: 1px solid var(--color-border-subtle);
  }
  .wcu__item:last-child { border-bottom: none; }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .wcu__title  { font-size: var(--text-4xl); }
  .wcu__item   { padding: var(--space-6) var(--space-5); }
}