* {
      box-sizing: border-box;
    }


    .timeline {
      position: relative;
      max-width: 1300px;
      margin: auto;
    }

    .timeline::before {
      content: '';
      position: absolute;
      left: 50%;
      top: 0;
      transform: translateX(-50%);
      width: 4px;
      height: 100%;
      background: #ddd;
    }

    .timeline-item {
      position: relative;
      width: 50%;
      padding: 30px 40px;
      margin-bottom: 30px;
      opacity: 0;
      transform: translateY(40px);
      transition: all 0.6s ease;
    }

    .timeline-item.show {
      opacity: 1;
      transform: translateY(0);
    }

    .timeline-item.left {
      left: 0;
      text-align: right;
    }

    .timeline-item.right {
      left: 50%;
      text-align: left;
    }

    .timeline-content {
      background: white;
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 6px 18px rgba(0, 0, 0, 0.4);
      transition: background 0.4s ease, color 0.3s ease;
      position: relative;
    }

    .timeline-icon {
      position: absolute;
      top: 10px;
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background: white;
      border: 4px solid #222;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 34px;
      z-index: 1;
      transition: transform 0.3s;
    }

    /* Başlangıç ve bitiş ikonları için daha büyük */
    .timeline-icon.start,
    .timeline-icon.end {
      width: 100px;
      height: 100px;
      font-size: 42px;
      border-width: 5px;
      top: 5px;
    }

    .timeline-item.left .timeline-icon {
      right: -40px;
    }

    .timeline-item.right .timeline-icon {
      left: -40px;
    }

    .timeline-content:hover {
      color: black;
    }

    .timeline-item[data-color]:hover .timeline-content {
      background-color: var(--color);
    }

    .timeline-item[data-color]:hover .timeline-icon {
      transform: scale(1.1);
    }

    .timeline-title {
      font-size: 20px;
      font-weight: bold;
      margin-bottom: 10px;
    }

    .timeline-desc {
      font-size: 16px;
      color: #222;
    }

    .timeline-end {
      text-align: center;
      font-size: 20px;
      font-weight: bold;
      color: #28a745;
      margin-top: 30px;
      animation: fadeIn 1s ease forwards;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @media screen and (max-width: 768px) {
      .timeline::before {
        left: 25px;
      }

      .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 80px;
        padding-right: 20px;
        text-align: left;
      }

      .timeline-icon {
        left: -20px !important;
        right: auto !important;
      }
    }