body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(
    to bottom,
    #ffffff 0%,
    #ffeeaa 35%,
    #ffeeaa 65%,
    #ffffff 100%
  );
  color: #222;
  margin: 0;
  padding: 0;
}

/* ----------- HERO IA ----------- */
.ia-hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 80px 0 80px;        /* marges latérales généreuses */
  max-width: 1380px;
  margin: 0 auto;
  width: 100%;
  min-height: 540px;
  background: transparent;
}

.ia-col.gauche {
  flex: 1;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.ia-col.gauche h1 {
  font-size: 30px;
  font-weight: 700;
  color: #333;
  margin-bottom: 18px;
  letter-spacing: 0;
}

.ia-subtitle {
  font-size: 1.22rem;
  color: #333;
  margin-bottom: 18px;
  font-weight: 500;
  line-height: 1.45;
}

.ia-desc {
  margin-top: 20px;
  font-size: 15px;
  color: #333;
  text-align: left;
  font-weight: 400;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.46;
}

/* ----------- SÉPARATEUR ----------- */
.ia-separator {
  width: 2px;
  background: #333;
  opacity: 0.3;
  border-radius: 1px;
  height: 100%;
  min-height: 350px;
  align-self: center;
  margin: 0 32px;
}


/* ----------- COLONNE DROITE ----------- */
.ia-col.droite {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 350px;
  position: relative;
}

.ia-right-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 20px;
}

.ia-titre-droite {
  font-size: 30px;
  font-weight: 600;
  color: #222;
  margin-bottom: 26px;
  margin-top: 12px;
  letter-spacing: 0;
}

.btn-ia-launch {
  background: #ff7300;
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: 11px;
  padding: 16px 38px;
  margin: 0 0 22px 0;
  margin-top: 12px;
  box-shadow: 0 2px 8px rgba(200,150,0,0.08);
  cursor: pointer;
  transition: background 0.18s, color 0.18s, box-shadow 0.18s;
}
.btn-ia-launch:hover,
.btn-ia-launch:focus {
  background: #ffae42;
  color: #222;
  box-shadow: 0 5px 18px rgba(200,150,0,0.12);
}

.ia-desc-droite {
  margin-top: 5px;
  font-size: 15px;
  color: #333;
  text-align: center;
  line-height: 1.42;
  font-weight: 400;
  max-width: 500px;
}

#snackbar-dev {
  visibility: hidden; 
  min-width: 280px;
  background-color: #333;
  color: #fff;
  text-align: center;
  border-radius: 10px;
  padding: 18px 22px;
  position: fixed;
  left: 50%;
  bottom: 36px;
  font-size: 1.08rem;
  z-index: 9999;
  transform: translateX(-50%);
  box-shadow: 0 6px 22px rgba(80,60,0,0.13);
  opacity: 0;
  transition: opacity 0.25s, visibility 0s linear 0.25s;
}
#snackbar-dev.show {
  visibility: visible;
  opacity: 1;
  transition: opacity 0.25s;
}

/* ----------- NOUVELLES SECTIONS ----------- */

/* Section Fonctionnalités */
.features-section {
  padding: 50px 40px;
  max-width: 1380px;
  margin: 0 auto;
}

.features-container {
  text-align: center;
}

.features-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 50px;
  background: linear-gradient(135deg, #ff7300, #ffae42);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.feature-card {
  background: linear-gradient(145deg, hsl(46, 100%, 89%), #fff8cf);
  border-radius: 20px;
  padding: 35px 25px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
}

.feature-card:hover::before {
  left: 100%;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: block;
}

.feature-card h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 15px;
}

.feature-card p {
  font-size: 1rem;
  color: #555;
  line-height: 1.6;
  margin: 0;
}

/* Section Exemples */
.examples-section {
  padding: 50px 40px;
  background: rgba(255, 238, 170, 0.3);
}

.examples-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.examples-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 50px;
  background: linear-gradient(135deg, #ff7300, #ffae42);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.example-card {
  background: white;
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  text-align: left;
}

.example-question,
.example-answer {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 20px;
}

.example-answer {
  margin-bottom: 0;
}

.user-avatar,
.ai-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.user-avatar {
  background: #e3f2fd;
}

.ai-avatar {
  background: linear-gradient(135deg, #ff7300, #ffae42);
}

.message-bubble {
  background: #f5f5f5;
  border-radius: 15px;
  padding: 15px 20px;
  max-width: 400px;
  font-size: 0.95rem;
  line-height: 1.5;
  position: relative;
}

.message-bubble.user {
  background: #e3f2fd;
  margin-left: auto;
}

.message-bubble.ai {
  background: linear-gradient(145deg, hsl(46, 100%, 89%), #fff8cf);
  border: 1px solid rgba(255, 182, 0, 0.2);
}

/* Section CTA */
.cta-section {
  padding: 50px 40px;
  max-width: 1380px;
  margin: 0 auto;
}

.cta-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(145deg, hsl(46, 100%, 89%), #fff8cf);
  border-radius: 25px;
  padding: 50px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  gap: 40px;
}

.cta-content {
  flex: 1;
}

.cta-content h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 1.1rem;
  color: #555;
  margin-bottom: 30px;
  line-height: 1.6;
}

.btn-cta-large {
  background: #ff7300;
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  border: none;
  border-radius: 15px;
  padding: 18px 40px;
  box-shadow: 0 4px 15px rgba(255, 115, 0, 0.3);
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-cta-large:hover {
  background: #ffae42;
  color: #222;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255, 115, 0, 0.4);
}

.cta-stats {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  min-width: 100px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ff7300;
  margin-bottom: 5px;
  background: linear-gradient(135deg, #ff7300, #ffae42);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  color: #666;
  font-weight: 500;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-card,
.example-card {
  animation: fadeInUp 0.6s ease forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

/* Responsive Design */
@media (max-width: 1200px) {
  .cta-container {
    flex-direction: column;
    text-align: center;
  }
  
  .cta-stats {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .ia-hero {
    flex-direction: column;
    padding: 40px 20px;
    min-height: auto;
  }
  
  .ia-separator {
    width: 80%;
    height: 2px;
    margin: 30px 0;
    min-height: auto;
  }
  
  .features-section,
  .examples-section,
  .cta-section {
    padding: 40px 20px;
  }
  
  .features-title,
  .examples-title {
    font-size: 2rem;
  }
  
  .examples-grid {
    grid-template-columns: 1fr;
  }
  
  .example-card {
    padding: 20px;
  }
  
  .cta-container {
    padding: 30px;
  }
  
  .cta-content h2 {
    font-size: 1.8rem;
  }
  
  .cta-stats {
    gap: 20px;
  }
  
  .stat-number {
    font-size: 2rem;
  }
}