/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Base */
body {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #111;
  background-color: #fff;
}

/* Header projet */
.header-projet {
  position: fixed;
  top: 0;
  width: 100%;
  background: #fff;
  border-bottom: 1px solid #eaeaea;
  padding: 10px 40px;
  z-index: 1000;
}


.retour {
  text-decoration: none;
  color: #111;
  font-size: 14px;
}

.retour:hover {
  text-decoration: underline;
}

/* Contenu */
.contenu-projet {
  max-width: 900px;
  margin: 0 auto;
  padding: 140px 20px 100px;
}


/* Intro */
.intro-projet {
  margin-bottom: 60px;
}

.intro-projet h1 {
  font-size: 28px;
  margin-bottom: 10px;
}

.meta {
  font-size: 14px;
  color: #666;
}

/* Images */
.images-projet {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 30px;
}

.images-projet img {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 40px;
}

.videos-projet {
  display: grid;
  gap: 40px;
  margin: 60px 0;
}

.videos-projet video {
  width: 100%;
  max-width: 900px;
  height: auto;
  display: block;
}
/* Texte */
.texte-projet {
  max-width: 600px;
  font-size: 15px;
}

/* Footer */
.footer-projet {
  border-top: 1px solid #eaeaea;
  padding: 40px;
  text-align: center;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
  .header-projet {
    padding: 20px;
  }

  .contenu-projet {
    padding: 110px 15px 80px;
  }
}