@font-face {
    font-family: 'CooperBT';
    src: url('Fonts/CooperBlkBT-Regular.ttf') format('truetype');
    font-weight: 900;
    font-style: normal;
}

@font-face {
    font-family: 'CooperBT';
    src: url('Fonts/CooperBlkBT-Italic.ttf') format('truetype');
    font-weight: 900;
    font-style: italic;
}

@font-face {
    font-family: 'CooperBT';
    src: url('Fonts/CooperLtBT-Regular.ttf') format('truetype');
    font-weight: 300;
    font-style: normal;
}

@font-face {
    font-family: 'CooperBT';
    src: url('Fonts/CooperLtBT-Italic.ttf') format('truetype');
    font-weight: 300;
    font-style: italic;
}

@font-face {
    font-family: 'CooperBT';
    src: url('Fonts/CooperLtBT-Bold.ttf') format('truetype');
    font-weight: bold;
    font-style: normal;
}

@font-face {
    font-family: 'CooperBT';
    src: url('Fonts/CooperMdBT-Regular.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
}

@font-face {
    font-family: 'CooperBT';
    src: url('Fonts/CooperMdBT-Italic.ttf') format('truetype');
    font-weight: 500;
    font-style: italic;
}

body {
    background-color: #000;
    color: #fff;
    font-family: 'Poppins', sans-serif;
    padding: 2rem;
  }
  
  h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-family: 'CooperBT';
    padding-top: 50px;
  }
  
  .filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
  }
  
  .filters button {
    background: transparent;
    border: 2px solid #fff;
    padding: 0.5rem 1rem;
    color: #fff;
    border-radius: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  
  .filters button:hover,
  .filters button.active {
    background: #fff;
    color: #000;
  }
  
  .portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
  }
  
  /* Cartes */
  .flip-card {
    perspective: 1000px;
    position: relative;
    height: 320px;
    border-radius: 1.5rem;
    transition: transform 0.4s ease;
  }
  
  .flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.8s ease;
    border-radius: 1.5rem;
  }
  
  .flip-card:hover .flip-inner {
    transform: rotateY(180deg);
  }
  
  /* Faces */
  .flip-front, .flip-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    overflow: hidden;
    border-radius: 1.5rem;
    transition: box-shadow 0.4s ease;
  }
  
  .flip-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  /* Back */
  .flip-back {
    background: #1a1a1a;
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
    text-align: center;
  }
  
  .flip-back h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
  }
  
  .flip-back p {
    font-size: 1rem;
    margin-bottom: 1rem;
  }
  
  .flip-back .icon {
    font-size: 1.8rem;
    animation: bounceArrow 1s infinite alternate;
  }
  
  /* Glow effects */
  .flip-card.logotheque:hover .flip-inner {
    box-shadow: 0 0 25px 5px rgba(255, 255, 255, 0.7);
  }
  .flip-card.print:hover .flip-inner {
    box-shadow: 0 0 25px 5px rgba(190, 173, 230, 0.7);
  }
  .flip-card.projets:hover .flip-inner {
    box-shadow: 0 0 25px 5px rgba(255, 211, 241, 0.7);
  }
  
  /* Animation icône */
  @keyframes bounceArrow {
    0% { transform: translateX(-5px); }
    50% { transform: translateX(0) scale(1.2); }
    100% { transform: translateX(5px); }
  }
  
  /* Hide items by JS */
  .flip-card.hide {
    display: none;
  }