body {
    background-color: #21224e;
}

.intro {
    background-color: #424e68;
    margin: 1rem 4rem 2rem 4rem;
    padding: 1rem;
    border-radius: 1rem;
}

.lastEdition {
        background-image: linear-gradient(
        62deg,
        #454272 0%,
        #968ced 100%
    );
    margin: 0 4rem 2rem 4rem;
    padding: 1rem;
    border-radius: 1rem;
}

.edition {
    padding: 1em;
    border-radius: 1em;
}

#editionDeux {
    background-image: linear-gradient(
        62deg,
        #425172 0%,
        #8caeed 100%
    );
}

#editionUn {
    background-image: linear-gradient(
        62deg,
        #915246 0%,
        #dcb7a8 100%
    );
}

.flexbox {
    display: flex;
    justify-content: space-between;
}

.flexbox img {
    max-width: 20rem;
}

/* Panneau dépliant */
.accordion {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  margin: 0 2em;
  padding: 2rem;
  gap: 1.5rem;
  text-align: center;
}

.accordion div {
  padding: 1em 1.5em 0.5em 1.5em;
  color: white;
  border-radius: 10px;
  transition: 0.3s;
  align-items: center;
}

.accordion img {
    width: 100%;
    max-width: 20rem;
    border-radius: 10px;
}

.accordion details {
    background-image: linear-gradient(
        62deg,
        #425172 0%,
        #8caeed 100%
    );
    padding: 1em;
    border-radius: 8px;
    color: white;
    margin-top: 1em;
}

.accordion details > .flexbox {
    flex-wrap: wrap;
    gap: 2em;
    margin-top: 1em;
}

.accordion details > .flexbox > div {
    flex: 1 1 40%;
}

.accordion summary {
    cursor: pointer;
    font-size: 1.3em;
    font-weight: bold;
    list-style: none;
}

.accordion summary h4 {
    display: inline;
    font-size: 1.5em;
}

.accordion ul {
    text-align: justify;
    margin-top: 1em;
    padding-left: 1.2em;
}

.accordion li {
    margin-bottom: 0.7em;
    line-height: 1.5;
}

/* Supprime la flèche native */
.accordion summary::-webkit-details-marker {
    display: none;
}

.video {
    background-color: #e4e8ff;
    margin: 0 4rem 0 4rem;
    padding: 0.5rem 2rem 2rem 2rem;
    border-radius: 1rem;
    color:#21224e;
}

.videoSpan {
    display: flex;
    justify-content: space-evenly;
}

iframe {
    max-width: 34rem;
    width : 100%;
    height: 19rem;
    
}

/* 📱 Responsive */
@media (max-width: 768px) {
  .intro {
      margin: 2rem 1.5rem 1rem 1.5rem;
      padding: 0.5rem 1.5rem 0.5rem 1.5rem;
      text-align: justify;
  }
  .lastEdition {
      flex-direction: column;
      text-align: center;
      margin: 1.5rem;
      padding: 0.5rem 1.5rem 0.5rem 1.5rem;
  }
    .video {
      flex-direction: column;
      text-align: center;
      margin: 1.5rem;
      padding: 0.5rem 1.5rem 0.5rem 1.5rem;
    }
    
    .videoSpan {
      flex-direction: column;
      text-align: center;
      gap: 1rem;
    }
    iframe {
        height: 10.5rem;
    }
    .accordion {
        margin: 0 0 1.5rem 0;;
        padding: 0;
    }
    .edition {
        flex-direction: column;
        margin: 0 1.5rem;
        padding: 1rem;
    }
    .edition-flex div {
        padding: 0;
    }
    .edition-video ul {
        padding: 0;
    }
}

/* 🌌 Fond étoilé animé */
@keyframes twinkling {
    0% { opacity: 0.3; }
    50% { opacity: 1; }
    100% { opacity: 0.3; }
}

.stars {
    position: fixed;
    width: 100%;
    height: 100%;
    background: transparent;
    overflow: hidden;
    top: 0;
    left: 0;
    z-index: -1;
}

.star {
    position: absolute;
    width: 3px;
    height: 3px;
    background: rgb(247, 247, 247);
    border-radius: 50%;
    opacity: 0.3;
    animation: twinkling 1.5s infinite alternate ease-in-out;
}

/* Génération aléatoire des étoiles */
.star:nth-child(odd) {
    animation-duration: 1.5s;
}

.star:nth-child(even) {
    animation-duration: 2.5s;
}