/* --- Grid Layout --- */
    body, html { margin:0; padding:0; height:100%; }
    .projects-grid {
      display: grid;
      grid-template-columns: 1fr 280px 1fr;
      height: 100vh;
    }
    .column {
      overflow-y: auto;
      padding: 1em;
      box-sizing: border-box;
    }
    .column.center {
      background: #fafafa;
      border-left: 1px solid #eee;
      border-right: 1px solid #eee;
      text-align: center;
    }

    /* --- Project Cards & Images --- */
    .project-card {
      margin-bottom: 1em;
      position: relative;
    }
    .project-card img {
      width: 100%;
      height: 266px;
      object-fit: cover;
      border-radius: 4px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    }
    .caption {
      position: absolute;
      bottom: 0; left: 0;
      width: 100%;
      background: rgba(0,0,0,0.6);
      color: #fff;
      padding: 0.4em;
      font-size: 0.9em;
      border-radius: 0 0 4px 4px;
    }

    /* --- Center Menu --- */
    .center .logo {
      width: 120px;
      margin: 1em auto;
    }
    .center h2 { margin: .5em 0; font-family: sans-serif; }
    .center .back-menu {
      display: inline-block;
      margin-bottom: 1em;
      color: #333;
      text-decoration: none;
      font-family: sans-serif;
    }
    .center select {
      width: 100%;
      padding: .5em;
      border-radius: 4px;
      border: 1px solid #ccc;
      font-family: sans-serif;
    }

    /* --- Hide scrollbar track on WebKit --- */
    .column::-webkit-scrollbar { width: 8px; }
    .column::-webkit-scrollbar-thumb {
      background: rgba(0,0,0,0.1);
      border-radius: 4px;
    }