/* Historical Timeline Styles */

.timeline-container {
    position: relative;
    padding: 2rem 0;
}

.timeline-date-group {
    margin-bottom: 3rem;
    position: relative;
}

.timeline-date-marker {
    position: relative;
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.timeline-date-label {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--bg-card);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: 2px solid var(--primary);
    display: inline-block;
    position: relative;
    z-index: 2;
}

.timeline-date-line {
    position: absolute;
    left: 0;
    top: 50%;
    width: 2px;
    height: 100%;
    background: var(--primary);
    opacity: 0.3;
    transform: translateY(-50%);
}

.timeline-events {
    padding-left: 2rem;
    position: relative;
}

.timeline-events::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), transparent);
    opacity: 0.2;
}

.timeline-event {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    position: relative;
    animation: slideInRight 0.4s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.timeline-event:hover {
    transform: translateX(5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.timeline-event-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    flex-shrink: 0;
    border: 2px solid;
    background: rgba(0, 255, 136, 0.1);
}

.timeline-event-content {
    flex: 1;
}

.timeline-event-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-event-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

.timeline-event-time {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    opacity: 0.7;
}

.timeline-event[data-type="achievement"] .timeline-event-icon {
    background: rgba(255, 215, 0, 0.1);
    border-color: #ffd700;
}

.timeline-event[data-type="milestone"] .timeline-event-icon {
    background: rgba(0, 212, 255, 0.1);
    border-color: #00d4ff;
}

.timeline-event[data-type="xp"] .timeline-event-icon {
    background: rgba(0, 255, 136, 0.1);
    border-color: #00ff88;
}

/* Responsive */
@media (max-width: 768px) {
    .timeline-date-marker {
        padding-left: 1rem;
    }
    
    .timeline-events {
        padding-left: 1rem;
    }
    
    .timeline-event {
        flex-direction: column;
        text-align: center;
    }
    
    .timeline-event-icon {
        margin: 0 auto;
    }
}