/* ===== MOBILE STYLES ===== */
@media (max-width: 900px) {

  /* ===== HAMBURGER ===== */
  .hamburger {
    display: block;
    font-size: 1.8rem;
    color: white;
    cursor: pointer;
    z-index: 300; /* sopra tutto */
  }

  /* Menu mobile sovrapposto a tutto lo schermo */
  .nav-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh; /* occupa tutto lo schermo */
    flex-direction: column;
    align-items: center;
    padding-top: 80px;
    z-index: 9999; /* sopra hero e tutto il resto */
    overflow-y: auto; /* scroll se menu lungo */
    background-color: #002855;
  }

  .nav-menu.active {
    display: flex;
  }

  .close-btn {
    display: block;
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 1.8rem;
    color: white;
    cursor: pointer;
    z-index: 10000;
  }

  .menu {
    flex-direction: column;
    width: 90%;
    gap: 22px; /* maggiore distacco tra le voci */
    background-color: #002855;
    border-radius: 8px;
    padding: 20px 0;
  }

  .menu a {
    text-align: center;
    font-size: 1.15rem;
    padding: 18px 14px;
    color: white;
  }

  /* ===== SUBMENU MOBILE ===== */
  .submenu {
    position: static !important; /* forza static su mobile */
    display: none; /* inizialmente nascosto */
    width: 100%;
    background-color: #f8f9fa; /* bianco chiaro */
    box-shadow: none;
    margin-top: 5px;
    border-radius: 8px;
  }

  /* disabilita hover desktop */
  .dropdown:hover .submenu {
    display: none;
  }

  /* mostra submenu solo quando dropdown ha classe active */
  .dropdown.active .submenu {
    display: block !important;
  }

  .submenu a {
    padding: 16px 14px;
    font-size: 1.05rem;
    color: #002855; /* testo blu scuro */
    text-align: center;
    display: block;
  }

  /* ===== HERO ===== */
  .hero {
    height: 55vh;
    min-height: 300px;
    position: relative;
    width: 100%;
    overflow: hidden;
  }

  .hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.5) blur(12px);
  }

  .hero-text {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    text-shadow: 0 0 15px rgba(0,0,0,0.9);
    z-index: 2;
  }

  .hero-text h2 {
    font-size: 1.8rem;
    padding: 0 10px;
  }

  .hero-text p {
    font-size: 1rem;
    padding: 0 10px;
  }

  /* ===== JOIN US ===== */
  .join-us {
    padding: 60px 15px 40px;
  }

  .join-container {
    padding: 40px 20px;
  }

  .join-container h2 {
    font-size: 1.6rem;
  }

  .join-container p {
    font-size: 1rem;
  }

  /* ===== JOIN US BUTTON ===== */
  .join-us .join-container button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    max-width: 100%;
    padding: 8px 12px;
    font-size: clamp(0.75rem, 4vw, 1rem);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-sizing: border-box;
    border: none;
    border-radius: 8px;
    background-color: #004aad;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
  }

  .join-us .join-container button:hover {
    background-color: #003b77;
  }
}

/* ===== ULTRA-SAFE BUTTON <360px ===== */
@media (max-width: 360px) {
  .join-us .join-container button {
    font-size: clamp(0.6rem, 5vw, 0.8rem);
    padding: 5px 8px;
  }
}