body 
{
        /* تنسيقات الـ Popup */
    .close-btn {
      position: absolute;
      top: 20px;
      left: 20px;
      font-size: 28px;
      color: #f44336;
      cursor: pointer;
      transition: transform 0.3s;
    }
    
    .close-btn:hover {
      transform: rotate(90deg);
        .conference-popup {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            z-index: 9999;
            justify-content: center;
            align-items: center;
        }

        .popup-content {
            background: linear-gradient(135deg, #1a2a6c, #2d85fd, #fdbb2d);
            width: 80%;
            max-width: 800px;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            animation: popIn 0.5s ease-out;
            color: white;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        @keyframes popIn {
            from { transform: scale(0.8); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }

        .popup-header {
            padding: 20px;
             color: white;
            text-align: center;
            background: rgba(0, 0, 0, 0.2);
        }

        .popup-header h2 {
            margin: 0;
             color: white;
            font-size: 28px;
            font-weight: bold;
        }

        .popup-body {
            padding: 30px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .conference-title {
            font-size: 24px;
            text-align: center;
            margin-bottom: 20px;
            line-height: 1.4;
        }

        .countdown {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin: 20px 0;
        }

        .countdown-item {
            background: rgba(255, 255, 255, 0.2);
            padding: 15px;
            border-radius: 10px;
            min-width: 80px;
            text-align: center;
            backdrop-filter: blur(10px);
        }

        .countdown-number {
            font-size: 32px;
            font-weight: bold;
            display: block;
        }

        .countdown-label {
            font-size: 14px;
            text-transform: uppercase;
        }

        .conference-date {
            font-size: 20px;
            margin: 15px 0;
            text-align: center;
        }

        .conference-location {
            font-size: 18px;
            margin-bottom: 25px;
            text-align: center;
        }

        .popup-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
        }

        .popup-button {
            padding: 12px 25px;
            border: none;
            border-radius: 50px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .register-btn {
            background: #ffcc00;
            color: #000;
        }

        .register-btn:hover {
            background: #ffdd40;
            transform: translateY(-3px);
        }

        .close-btn {
            background: rgba(255, 255, 255, 0.2);
            color: white;
        }

        .close-btn:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .popup-footer {
            padding: 15px;
            text-align: center;
            background: rgba(0, 0, 0, 0.3);
            font-size: 14px;
        }

        @media (max-width: 768px) {
            .popup-content {
                width: 95%;
            }
            
            .countdown {
                flex-wrap: wrap;
            }
            
            .conference-title {
                font-size: 20px;
            }
        }