/* Portfolio Grid */
    .portfolio {
      background: linear-gradient(to bottom, rgb(12, 12, 12), rgba(255,255,255,0)), url('../images/about.png') center / 100% 100%;
      color: #111;
      padding: 2rem 2rem; 
      margin: auto;
    }

    .portfolio h3 {
      text-align: center;
      font-size: 2rem;
      margin-bottom: 2rem;
    }

    
    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
      gap: 1.5rem;
    }

    .card {
      background:#112;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
      transition: transform 0.3s;
      height: 400px;
     }

    .card .img-border img {
      display: flex;              /* enable flexbox */
      justify-content: center;    /* center horizontally */
      align-items: center;        /* center vertically */
      text-align: center;         /* optional: center text inside */
      width: auto;
      height: 300px;
      display: block;
      margin:auto;
      position:relative;
      top:-10px;  
      border-radius: 12px;
      -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 10%, black 90%, transparent 100%),
                      linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
      -webkit-mask-composite: intersect;
      mask-image: linear-gradient(to bottom, transparent 0%, black 10%, black 90%, transparent 100%),
              linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
      mask-composite: intersect;
      }

     .card .img-border { 
      width: 100%;
      border: 10px solid transparent;
      border-image: radial-gradient(circle, rgba(0,0,14,0.8), rgba(0,0,0,0)) 4;
      overflow:hidden;

      border-radius: 12px;
      -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 10%, black 90%, transparent 100%),
                      linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
      -webkit-mask-composite: intersect;
      mask-image: linear-gradient(to bottom, transparent 0%, black 10%, black 90%, transparent 100%),
              linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
      mask-composite: intersect;
    }

    .card:hover { transform: translateY(-5px); }

    .card p {
      padding: 1rem;
      font-weight: bold;
      text-align: center;
      color: #fff;
      background-color:#112;
    }