/* SEZIONE HERO */
.hero-banner {
  background-color: var(--bs-primary);
  height: 353px;
  display: flex;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
}

/* Titolo */
.h1-hero {
  text-transform: uppercase !important;
  color: white !important;
  font-weight: 400 !important;
  position: relative;
  z-index: 2;
}

/* Quadrato arancione allineato al bordo del container */
.hero-square {
  position: absolute;
  left: 0;
  top: 0;
  width: 120px;
  height: 120px;
  background-color: var(--bs-secondary);
  z-index: 1;
  transform: translateX(var(--px-vw-5, 5vw));
}

/* SEZIONE COLLABORA */
.cta-section {
  width: 100%;
  border-left: none !important;
  border-right: none !important;
}

.cta-container {
  width: 100%;
  padding: 0;
}

.filtro-buttons-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  gap: 0;
  max-width: 100%;
  border: 1px solid var(--bs-neutral); 
  overflow: hidden; 
}

.filtro-categoria-btn {
  background-color: #f5f5f5;
  border: none;
  border-right: 1px solid var(--bs-neutral); 
  padding: 35px 30px;
  cursor: pointer;
  transition: color 0.3s ease;
  text-align: center;
  position: relative;
  z-index: 1;
  color: #a6a6a6;
  overflow: hidden;
}

.filtro-categoria-btn:last-child {
  border-right: none;
}

/* Animazione coloramento dal basso verso l'alto */
.filtro-categoria-btn::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0;
  background-color: var(--bs-secondary);
  z-index: -1;
  transition: height 0.3s ease;
}

.filtro-categoria-btn:hover {
  color: white;
}

.filtro-categoria-btn:hover::before {
  height: 100%;
}

.filtro-categoria-btn.active {
  color: white;
}

.filtro-categoria-btn.active::before {
  height: 100%;
}

/* Rimuovi il vecchio ::after che non serve più */
.filtro-categoria-btn::after {
  display: none;
}

/* ========================================
   SEZIONE MOSAICO PROGETTI
   ======================================== */

.mosaico-container {
  display: flex;
  gap: 0;
  width: 100%;
  height: fit-content; 
  min-height: auto; /* ✅ Base impostata su auto */
}


/* Spazio tra i gruppi */
.mosaico-container + .mosaico-container {
  margin-top: 0;
  min-height: auto; 
}

.mosaico-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: fit-content; /* ✅ Si adatta al contenuto */
}

.progetto-card {
  overflow: hidden;
  cursor: pointer;
  width: 100%;
  margin: 0;
  padding: 0;
  line-height: 0;
  flex-shrink: 0;
  position: relative;
}

.progetto-card img {
  transition: transform 0.3s ease;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.01);
}

.progetto-card:hover img {
  transform: scale(1.05);
}

/* Overlay scuro al hover */
.progetto-overlay {
  background-color: rgba(0, 0, 0, 0.7);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.progetto-card:hover .progetto-overlay {
  opacity: 1;
}

/* Quadrato colorato animato */
.quadrato-colorato {
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  opacity: 0;
  transition: all 0.4s ease;
  z-index: 1;
}

.progetto-card:hover .quadrato-colorato {
  width: 80px;
  height: 80px;
  opacity: 1;
}

/* Titolo sopra il quadrato */
.progetto-overlay h4 {
  z-index: 2;
}

.mosaico-card a.glightbox {
    display: block;
    width: 100%;
    height: 100%;
    cursor: zoom-in;
}

/* ========================================
   RESPONSIVE
   ======================================== */

/* Mobile */
@media (max-width: 768px) {
  .cta-section {
    padding: 15px 0;
  }

  .cta-section .d-flex {
    flex-direction: column;
    align-items: stretch;
  }

  .filtro-buttons-wrapper {
    grid-template-columns: 1fr;
  }

  .filtro-categoria-btn {
    border-right: none;
    border-bottom: 1px solid #d0d0d0;
  }

  .filtro-categoria-btn:last-child {
    border-bottom: none;
  }

  .mosaico-container {
    flex-direction: column;
    height: auto;
    min-height: auto;
  }

  .mosaico-column {
    height: auto;
  }

  .progetto-card {
    height: 300px !important;
  }

  .progetto-card:hover .quadrato-colorato {
    width: 60px;
    height: 60px;
  }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 992px) {
  .filtro-categoria-btn {
    padding: 18px 20px;
    font-size: 15px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .mosaico-container {
    min-height: auto !important; /* ✅ FIX: Rimosso 500px, messo auto */
  }

  .mosaico-container + .mosaico-container {
    min-height: auto;
  }

  .progetto-card:hover .quadrato-colorato {
    width: 70px;
    height: 70px;
  }
}

/* Desktop medio */
@media (min-width: 1025px) and (max-width: 1440px) {
  .mosaico-container {
    min-height: auto !important; /* ✅ FIX: Rimosso 550px, messo auto */
  }

  .mosaico-container + .mosaico-container {
    min-height: auto;
  }
}

/* Desktop grande */
@media (min-width: 1441px) {
  .mosaico-container {
    min-height: auto !important; /* ✅ FIX: Rimosso 600px, messo auto */
  }

  .mosaico-container + .mosaico-container {
    min-height: auto;
  }
}

/* SEZIONE COLLABORA - STILI AGGIUNTIVI */
/* (Nota: c'erano duplicati nel tuo file originale, li ho mantenuti per sicurezza ma uniti dove possibile) */

/* CTA attaccati tra loro */
.contenitore-interno {
  border: 1px solid var(--bs-neutral);
}
.cta-section .d-flex {
  gap: 0 !important;
}

.contenitore-interno .cta-primary {
  border-right: none !important;
}