.conferences-section {
      width: 90%;
      margin-top: 150px;
      margin-bottom: 50px;
    }

    .section-title {
      text-align: center;
      font-size: 2rem;
      margin-bottom: 40px;
      color: #6518ff;
    }

    .conferences-container {
      display: flex;
      flex-wrap: wrap;
      gap: 25px;
      justify-content: center;
    }

    .conference-card {
      background-color: #fff;
      border-radius: 12px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
      padding: 20px;
      width: 300px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      transition: transform 0.2s ease, box-shadow 0.3s ease;
    }

    .conference-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 20px rgba(0,0,0,0.15);
    }

    .conference-card h3 {
      color: #6518ff;
      margin: 0 0 5px 0;
    }

    .conference-card p {
      margin: 0;
      font-size: 0.95rem;
    }

    .conference-card .desc {
      font-size: 0.9rem;
      color: #555;
      margin-top: 10px;
    }

    .conference-card .countdown {
      font-weight: bold;
      color: #d9534f;
    }

    .conference-card button {
      margin-top: auto;
      background-color: #6518ff;
      color: white;
      border: none;
      padding: 10px;
      border-radius: 8px;
      font-size: 1rem;
      cursor: pointer;
      transition: background-color 0.3s ease;
    }

    .conference-card button:hover {
      background-color: #925bff;
    }

    /* المؤتمرات التي انتهت */
    .conference-card.past {
      background-color: #f2f2f2;
      opacity: 0.85;
      pointer-events: none;
    }

    .conference-card.past h3,
    .conference-card.past p,
    .conference-card.past .desc {
      color: #888;
    }

    .conference-card.past .countdown {
      color: #999 !important;
    }

    .conference-card.past button {
      background-color: #aaa;
      cursor: default;
    }