body {
    background-color: #f0f2f5;
    color: #333;
    margin: 0;
    overflow-x: hidden;
}

.hero {
  background: radial-gradient(circle at center,
    #7E57C2 0%,      /* violet */
    #8E24AA 30%,     /* violet moyen plus saturé */
    #BA68C8 60%,     /* fuchsia */
    #1E1E2F 100%);   /* bleu nuit terminal */
  color: white;
  padding: 60px 20px;
  text-align: center;
  background-size: 250% 250%;
  background-position: center;
  animation: animate-gradient 12s ease-in-out infinite;
  overflow-x: hidden;
}

@keyframes animate-gradient {
  0%   { background-position: 50% 50%; }
  50%  { background-position: 60% 40%; }
  100% { background-position: 50% 50%; }
}

.hero-content {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1.2s ease-out forwards;
  animation-delay: 0.3s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1:hover {
  text-shadow: 0 0 15px rgba(255, 255, 255, 0.6);
  transform: scale(1.03);
  transition: all 0.3s ease;
}

.hero h1, .hero p {
  text-shadow: 0 0 12px rgba(186, 104, 200, 0.4);
}


.card:hover {
    transform: translateY(-5px);
    transition: transform 0.2s ease-in-out;
}

footer {
    padding: 20px 0;
    text-align: center;
    color: #777;
}

.presentation {
  background: linear-gradient(180deg, #e1f0ff, #ede7f6 );
  padding: 60px 20px;
  text-align: center;
}

.presentation h2 {
  font-size: 2.2em;
  color: #7E57C2; /* violet principal */
  margin-bottom: 20px;
}

.presentation p {
  max-width: 800px;
  margin: 0 auto 20px;
  font-size: 1.1em;
  line-height: 1.7;
  color: #444;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
  padding: 0 20px;
}

.service {
  background: white;
  border-radius: 12px;
  padding: 30px 20px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  transition: transform 0.3s ease;
}

.service:hover {
  transform: translateY(-5px);
}

.service i {
  font-size: 2.5em;
  color: #7E57C2;
  margin-bottom: 15px;
  display: inline-block;
}

.service h3 {
  font-size: 1.3em;
  margin-bottom: 10px;
  color: #333;
}

.service p {
  font-size: 1em;
  color: #555;
  line-height: 1.5;
}

.projects {
  background: linear-gradient(180deg, #ede7f6, #e1f0ff);

  padding: 80px 20px;
  text-align: center;
}

.projects h2 {
  font-size: 2.4em;
  color: #7E57C2;
  margin-bottom: 50px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  padding: 0 20px;
}


.project-logo {
  max-width: 120px;
  height: auto;
  display: block;
  margin: 20px auto 10px;
}


.project-card {
  position: relative;
  background: white;
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 50%;
  background-color: rgba(126, 87, 194, 0.2); /* violet pastel clair */
  border-radius: 0 0 16px 16px; /* arrondir uniquement en bas */
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
  cursor: pointer;
}

.project-card:hover::before {
  opacity: 0; /* 1 pour le rendre visible */
}

.project-card h3 {
  font-size: 1.3em;
  margin: 20px 15px 10px;
  color: #333;
}

.project-card p {
  font-size: 1em;
  margin: 0 15px 20px;
  color: #666;
}

.project-card-link {
  text-decoration: none;
  color: inherit;
  display: block; /* pour que le lien prenne toute la carte */
  transition: transform 0.3s ease;
}