/* ============================================================

   MAIN LAYOUT & TITOLI

============================================================ */

main {

  max-width: 1320px;

  margin: 0 auto 6rem;

  box-sizing: border-box;

}



h1.page-title {

  font-weight: 300;

  font-size: 2.5rem;

  text-transform: uppercase;

  letter-spacing: 10px;

  margin: 0 auto 5rem;

  color: #111;

  text-align: center;

}



/* ============================================================

   FILTER BUTTON & PANEL

============================================================ */

button#filter-toggle {

  position: fixed;

  bottom: 30px;

  left: 20px;

  z-index: 1100;

  background-color: #000;

  color: #fff;

  padding: 6px 20px;

  border-radius: 22px;

  border: none;

  font-weight: 500;

  text-transform: uppercase;

  letter-spacing: 1.2px;

  font-size: 0.9rem;

  cursor: pointer;

  transition: 0.25s ease;

}



button#filter-toggle:hover {

  background-color: #444;

}



#filter-panel {

  position: fixed;

  bottom: 0;

  left: 0;

  width: 100vw;

  height: 0;

  overflow-y: hidden;

  padding: 50px 20px 20px 20px;

  background: transparent;

  transition: all 0.5s ease;

  z-index: 1050;

  box-sizing: border-box;

}



#filter-panel.active {

  height: 45%;

  max-height: 480px;

  background: #fff;

  padding: 50px 30px;

  overflow-y: auto;

}



#filter-close {

  display: none;

  position: absolute;

  top: 16px;

  right: 16px;

  background: transparent;

  border: none;

  cursor: pointer;

  color: #222;

  font-size: 1.6rem;

  font-weight: bold;

  transition: color 0.3s ease;

}



#filter-panel.active #filter-close {

  display: block;

}



#filter-close:hover {

  color: #000;

}



.filters-container {

  display: grid;

  grid-template-columns: repeat(3, 1fr);

  gap: 24px;

  padding: 10px 0;

}



.filter-group label {

  font-weight: 500;

  margin-bottom: 8px;

  text-transform: uppercase;

  font-size: 0.85rem;

  color: #444;

}



.filter-options {

  display: flex;

  flex-direction: column;

  gap: 6px;

}



.filter-option {

  cursor: pointer;

  padding: 8px 10px;

  border-radius: 4px;

  transition: background-color 0.3s ease, color 0.3s ease;

}



.filter-option:hover,

.filter-option.active {

  background-color: #f5f5f5;

  color: #000;

}



/* ============================================================

   GRIGLIA PROGETTI

============================================================ */

.project-grid {

  display: grid;

grid-template-columns: repeat(2, 1fr);

  gap: 1.2rem 1.8rem;

  width: 100%;

  margin: 10rem auto 0;

}



.project-item {

  position: relative;

  overflow: hidden;

  cursor: pointer;

  display: flex;

  flex-direction: column;

  gap: 2px;

  opacity: 0;

  transform: translateY(25px);

  transition: opacity 1.6s ease, transform 1.6s ease;

}





.project-item.visible {

  opacity: 1;

  transform: translateY(0);

}



.project-item img {

  width: 100%;

  height: 100%;

  object-fit: cover;

  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);

  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);

}



.project-item:hover img {

  transform: scale(1.02);

}



.project-info {

  padding: 0.6rem 0 2.5rem 0;

  color: #222;

}



.project-info h2 {

  margin: 0 0 6px;

  font-weight: 400;

  font-size: 1rem;

  color: #111;

  line-height: 1.25;

}



.project-info h2:hover{

  text-shadow:

    0.3px 0 0 currentColor,

   -0.3px 0 0 currentColor;  

}





.project-info p {

  margin: 0;

  font-weight: 300;

  font-size: 0.95rem;

  color: #4e4e4e;

}



/* ==============================

   RESPONSIVE

============================== */



/* ---- TABLET (max-width: 1024px) ---- */

@media (max-width: 1024px) {



  h1.page-title {

    font-size: 2.2rem;

    letter-spacing: 8px;

  }



  .project-info h2 {

    font-size: 1.2rem;

  }



  .filters-container {

    grid-template-columns: repeat(2, 1fr);

  }



  .project-grid {

    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));

    gap: 2.5rem;

    margin-top: 7rem;

  }

}



/* ---- MOBILE (max-width: 600px) ---- */

@media (max-width: 600px) {



  main {

    padding: 16px;

    margin-bottom: 2rem;

  }



  h1.page-title {

    font-size: 1.6rem;

    letter-spacing: 5px;

    margin-bottom: 2.5rem;

  }



  .project-item {

    gap: 6px;

    margin-bottom: 0.35rem;

  }



  .project-info {

    padding-top: 0.25rem;

  }



  .project-info h2 {

    font-size: 1rem;

    margin-bottom: 2px;

  }



  .project-info p {

    font-size: 0.9rem;

  }



  #filter-panel.active {

    height: 45%;

    max-height: 45vh;

    padding: 60px 24px 24px 24px;

  }



  .filters-container {

    grid-template-columns: 1fr;

    gap: 16px;

  }



  .project-grid {

    grid-template-columns: 1fr;

    gap: 1.5rem;

    margin-top: 4rem;

  }

}