.timeline-item {
        opacity: 0;
        transform: translateY(20px);
        animation: fadeInUp 0.6s ease-out forwards;
    }

    .timeline-item:nth-child(1) { animation-delay: 0.1s; }
    .timeline-item:nth-child(2) { animation-delay: 0.2s; }
    .timeline-item:nth-child(3) { animation-delay: 0.3s; }
    .timeline-item:nth-child(4) { animation-delay: 0.4s; }
    .timeline-item:nth-child(5) { animation-delay: 0.5s; }
    .timeline-item:nth-child(6) { animation-delay: 0.6s; }

    @keyframes fadeInUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .timeline-dot {
        transition: all 0.3s ease;
    }

    .timeline-item:hover .timeline-dot {
        transform: scale(1.2);
        box-shadow: 0 0 0 8px rgba(59, 130, 246, 0.1);
    }

    .timeline-line {
        position: absolute;
        left: 50%;
        top: 0;
        bottom: 0;
        width: 2px;
        background: linear-gradient(to bottom, #e5e7eb, #9ca3af, #e5e7eb);
    }

    @media (max-width: 768px) {
        .timeline-line {
            left: 20px;
        }
    }

    .dark .timeline-line {
        background: linear-gradient(to bottom, #374151, #6b7280, #374151);
    }

    .timeline-content {
        transition: all 0.3s ease;
    }

    .timeline-item:hover .timeline-content {
        transform: translateY(-5px);
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    }

    @keyframes pulse-ring {
        0% {
            box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7);
        }
        70% {
            box-shadow: 0 0 0 10px rgba(59, 130, 246, 0);
        }
        100% {
            box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
        }
    }

    .timeline-dot-pulse {
        animation: pulse-ring 2s infinite;
    }