/* HashimaXR Timeline Component - v1.6.0 */
/* Visual timeline for Module 02: Hashima in Time and Place */

.hashima-timeline {
    position: relative;
    margin: var(--spacing-xxl) 0;
    padding: var(--spacing-xl) 0;
}

.hashima-timeline h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: 1.4rem;
    color: var(--rc-gold);
    border: none;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.timeline-container {
    position: relative;
    max-width: 100%;
}

/* Central timeline line */
.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(
        to bottom,
        transparent,
        var(--rc-gold) 5%,
        var(--rc-gold) 95%,
        transparent
    );
}

/* Timeline era sections */
.timeline-era {
    position: relative;
    display: flex;
    margin-bottom: var(--spacing-xl);
    align-items: flex-start;
}

.timeline-era:nth-child(odd) {
    flex-direction: row;
}

.timeline-era:nth-child(even) {
    flex-direction: row-reverse;
}

/* Era content box */
.era-content {
    width: calc(50% - 30px);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-subtle);
    padding: var(--spacing-lg);
    position: relative;
    transition: all 0.3s ease;
}

.era-content:hover {
    border-color: var(--rc-gold);
    background: var(--color-bg-card-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Arrow pointing to timeline */
.timeline-era:nth-child(odd) .era-content::after {
    content: '';
    position: absolute;
    right: -10px;
    top: 20px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 10px solid var(--color-border-subtle);
    transition: border-color 0.3s ease;
}

.timeline-era:nth-child(odd) .era-content:hover::after {
    border-left-color: var(--rc-gold);
}

.timeline-era:nth-child(even) .era-content::after {
    content: '';
    position: absolute;
    left: -10px;
    top: 20px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-right: 10px solid var(--color-border-subtle);
    transition: border-color 0.3s ease;
}

.timeline-era:nth-child(even) .era-content:hover::after {
    border-right-color: var(--rc-gold);
}

/* Timeline marker (center dot) */
.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--rc-charcoal);
    border: 3px solid var(--rc-gold);
    border-radius: 50%;
    z-index: 2;
    transition: all 0.3s ease;
}

.timeline-era:hover .timeline-marker {
    background: var(--rc-gold);
    box-shadow: 0 0 20px rgba(197, 160, 89, 0.5);
    transform: translateX(-50%) scale(1.2);
}

/* Era date badge */
.era-date {
    display: inline-block;
    background: var(--rc-blue);
    color: var(--rc-gold);
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

/* Era title */
.era-content h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: #fff;
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

/* Era description */
.era-content p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.6;
}

.era-content p:last-child {
    margin-bottom: 0;
}

/* Key events list */
.era-events {
    list-style: none;
    padding: 0;
    margin: var(--spacing-sm) 0 0 0;
    font-size: 0.85rem;
}

.era-events li {
    position: relative;
    padding-left: 16px;
    margin-bottom: 4px;
    color: var(--color-text-muted);
}

.era-events li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--rc-gold);
}

/* Era type indicators */
.era-content[data-era="industrial"] {
    border-top: 3px solid #4a90a4;
}

.era-content[data-era="wartime"] {
    border-top: 3px solid var(--color-warning);
}

.era-content[data-era="postwar"] {
    border-top: 3px solid #7c3aed;
}

.era-content[data-era="decline"] {
    border-top: 3px solid #666;
}

.era-content[data-era="heritage"] {
    border-top: 3px solid var(--rc-gold);
}

/* Legend */
.timeline-legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border-subtle);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.legend-color {
    width: 16px;
    height: 4px;
}

.legend-color.industrial { background: #4a90a4; }
.legend-color.wartime { background: var(--color-warning); }
.legend-color.postwar { background: #7c3aed; }
.legend-color.decline { background: #666; }
.legend-color.heritage { background: var(--rc-gold); }

/* Mobile responsive */
@media (max-width: 768px) {
    .timeline-container::before {
        left: 20px;
    }
    
    .timeline-era,
    .timeline-era:nth-child(odd),
    .timeline-era:nth-child(even) {
        flex-direction: column;
        padding-left: 50px;
    }
    
    .era-content {
        width: 100%;
    }
    
    .timeline-marker {
        left: 20px;
        transform: translateX(-50%);
    }
    
    .timeline-era:hover .timeline-marker {
        transform: translateX(-50%) scale(1.2);
    }
    
    .timeline-era:nth-child(odd) .era-content::after,
    .timeline-era:nth-child(even) .era-content::after {
        left: -10px;
        right: auto;
        border-left: 0;
        border-right: 10px solid var(--color-border-subtle);
    }
    
    .timeline-era:nth-child(odd) .era-content:hover::after,
    .timeline-era:nth-child(even) .era-content:hover::after {
        border-right-color: var(--rc-gold);
        border-left-color: transparent;
    }
    
    .timeline-legend {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Print styles */
@media print {
    .hashima-timeline {
        page-break-inside: avoid;
    }
    
    .timeline-container::before {
        background: #000;
    }
    
    .era-content {
        border: 1px solid #000;
        background: #fff !important;
    }
    
    .era-content h3 {
        color: #000;
    }
    
    .era-content p,
    .era-events li {
        color: #333;
    }
    
    .era-date {
        background: #000;
        color: #fff;
    }
    
    .timeline-marker {
        background: #fff;
        border-color: #000;
    }
}