.timeline-container {
    position: relative;
    padding: 20px 0;
    margin: 20px 0;
    width: 100%;
    box-sizing: border-box;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 120px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, 
        transparent 0%,
        rgba(100, 181, 246, 0.4) 10%,
        rgba(100, 181, 246, 0.4) 90%,
        transparent 100%
    );
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
    width: 100%;
    box-sizing: border-box;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-year {
    position: absolute;
    left: 0;
    top: 0;
    width: 100px;
    padding: 6px 0;
    text-align: center;
    background: rgba(100, 181, 246, 0.1);
    border-radius: 20px;
    font-weight: bold;
    color: #64b5f6;
    font-size: 0.95em;
    z-index: 1;
}

.timeline-content {
    position: relative;
    margin-left: 160px;
    padding-bottom: 10px;
}

.timeline-event {
    position: relative;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    color: rgba(255, 255, 255, 0.9);
}

.timeline-event:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateX(5px);
}

.timeline-event::before {
    content: '';
    position: absolute;
    left: -45px;
    top: 50%;
    width: 12px;
    height: 12px;
    background: #64b5f6;
    border-radius: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 0 4px rgba(100, 181, 246, 0.2);
    transition: all 0.3s ease;
}

.timeline-event:hover::before {
    background: #90caf9;
    box-shadow: 0 0 0 6px rgba(100, 181, 246, 0.3);
}

@media (max-width: 768px) {
    .timeline-container::before {
        left: 80px;
    }
    
    .timeline-year {
        width: 70px;
        font-size: 0.9em;
        padding: 4px 0;
    }
    
    .timeline-content {
        margin-left: 96px;
    }
    
    .timeline-event::before {
        left: -20px;
        width: 10px;
        height: 10px;
    }
}