@media (max-width: 48em) {

    /* ----------------- */
    /* HEADER & NAVBAR    */
    /* ----------------- */
    .site-header {
        flex-direction: column;
        height: auto;
        padding: 0.5rem 1rem;
    }

    .site-header .nav {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        position: relative;
    }

    .logo img {
        display: none;
    }

    /* Hamburger */
    .hamburger {
        display: block;
        cursor: pointer;
        width: 30px;
        height: 25px;
        position: relative;
        z-index: 101;
    }

    .hamburger span {
        display: block;
        width: 100%;
        height: 3px;
        background-color: var(--green);
        margin: 5px 0;
        transition: 0.3s ease;
    }

    /* Navigation menu */
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: white;
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
        padding: 4rem 2rem;
        display: flex;
        flex-direction: column;
        gap: 2rem;
        transition: right 0.3s ease;
        z-index: 100;
    }

    nav ul {
        display: flex;
        flex-direction: column;
        gap: 2rem;
    }

    nav a {
        font-size: 1.2rem;
        color: var(--green);
        font-weight: 700;
        text-align: left;
    }

    /* Overlay */
    .nav-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.4);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
        z-index: 99;
    }

    /* Menu actif */
    .nav.active nav {
        right: 0;
    }

    .nav.active .nav-overlay {
        opacity: 1;
        pointer-events: auto;
    }

    /* Hamburger → croix */
    .nav.active .hamburger span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav.active .hamburger span:nth-child(2) {
        opacity: 0;
    }
    .nav.active .hamburger span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    /* ----------------- */
    /* HERO              */
    /* ----------------- */
    .hero-card {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .hero-image img {
        max-height: 200px;
        width: 100%;
        object-fit: cover;
    }

    .hero-content h1 {
        font-size: 1.1rem;
        text-align: center;
    }

    .btn-primary {
        width: 100%;
        padding: 1rem;
        font-size: 1rem;
        margin-top: 1rem;
    }

    /* ----------------- */
    /* MISSIONS          */
    /* ----------------- */
    .missions-list {
        gap: 2rem;
        margin-top: 2rem;
    }

    .mission {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1rem;
    }

    .missions, .contact-section {
        background-image: none; 
    }

    .mission-icon {
        min-width: 90px;
        height: 90px;
    }

    .mission-content h3 {
        font-size: 0.95rem;
    }

    .mission-content p {
        font-size: 0.85rem;
    }

    /* ----------------- */
    /* PARTNERS          */
    /* ----------------- */
    .partner-logos {
        gap: 1rem;
    }

    .partner-logos .logo-box {
        padding: 0.5rem;
    }

    /* ----------------- */
    /* CONTACT           */
    /* ----------------- */
    .contact-form .form-row {
        flex-direction: column;
        gap: 0.8rem;
    }

    .contact-form .btn-primary {
        width: 100%;
        text-align: center;
        padding: 1rem;
    }

    /* ----------------- */
    /* FOOTER            */
    /* ----------------- */
    .site-footer .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer-left, .footer-center, .footer-right {
        text-align: center;
    }

    /* ----------------- */
    /* PUBLICATIONS            */
    /* ----------------- */
    .publications-page {
    padding: 3rem 0;
  }

  .publications-page h1 {
    font-size: 1.8rem;
    margin: 2rem 0;
  }

  .publications-list {
    gap: 1.5rem;
  }

  /* CARD EN COLONNE */
  .publication-card {
    flex-direction: column;
    border-radius: 16px;
  }

  /* IMAGE EN HAUT */
  .publication-card img {
    width: 100%;
    height: 180px;
  }

  /* CONTENU */
  .publication-content {
    padding: 1.2rem;
  }

  .publication-content h2 {
    font-size: 1.1rem;
    line-height: 1.4;
  }

  .publication-content p {
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.2rem;
  }
  .publication-content .btn-primary {
    width: 100%;
    text-align: center;
    padding: 0.8rem;
  }

  .publications-plus {
    font-size: 0.95rem;
    margin-top: 1.5rem;
  }
}