/* Common Styles */
.simple-timeline {
    position: relative;
    padding: 20px 0;
    margin: 40px 0;
}

.timeline-content-link,
.timeline-content-wrapper {
    text-decoration: none;
    color: inherit;
    display: block;
}

.timeline-content-link {
    cursor: pointer;
    transition: transform 0.3s ease;
}

.timeline-content-link:hover {
    transform: translateY(-5px);
}

.timeline-content-link:hover .timeline-content {
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    border-color: #2196F3;
}

.timeline-content {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.timeline-image {
    margin-bottom: 15px;
}

.timeline-image img {
    width: 100%;
    height: auto;
    border-radius: 6px;
}

.timeline-title {
    margin: 0 0 8px 0;
    font-size: 24px;
    color: #333;
    text-align:center;
}

.timeline-subtitle {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: #666;
    font-style: italic;
}

.timeline-description {
    margin-bottom: 15px;
    line-height: 1.6;
    color: #555;
}

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

.timeline-link-indicator {
    display: inline-block;
    padding: 8px 16px;
    background: #2196F3;
    color: #fff;
    border-radius: 4px;
    font-size: 14px;
    transition: background 0.3s;
}

.timeline-content-link:hover .timeline-link-indicator {
    background: #1976D2;
}

/* ============================================
   VERTICAL LAYOUT - Position Bottom (Default)
   ============================================ */
.timeline-vertical::before {
    content: "";
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #e0e0e0;
}

.timeline-vertical .timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 40px;
}

.timeline-vertical .timeline-marker {
    position: absolute;
    left: 11px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #2196F3;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px #e0e0e0;
    z-index: 1;
}

/* ============================================
   VERTICAL LAYOUT - Position Top
   ============================================ */
.timeline-vertical.position-top::before {
    left: 20px;
}

.timeline-vertical.position-top .timeline-item {
    padding-left: 60px;
    padding-bottom: 0;
}

.timeline-vertical.position-top .timeline-marker {
    left: 11px;
    top: auto;
    bottom: 0;
}

/* ============================================
   VERTICAL LAYOUT - Alternate Position
   ============================================ */
.timeline-vertical.position-alternate {
    padding-left: 0;
    max-width: 1200px;
    margin: 40px auto;
}

.timeline-vertical.position-alternate::before {
    left: 50%;
    transform: translateX(-50%);
}

.timeline-vertical.position-alternate .timeline-item {
    width: 50%;
    padding-left: 0;
    margin-bottom: 60px;
    clear: both;
}

.timeline-vertical.position-alternate .timeline-item.item-bottom {
    padding-left: calc(50% + 40px);
    padding-right: 0;
}

.timeline-vertical.position-alternate .timeline-item.item-top {
    padding-right: calc(50% + 40px);
    padding-left: 0;
}

.timeline-vertical.position-alternate .timeline-item.item-bottom .timeline-marker {
    left: calc(50% - 10px);
}

.timeline-vertical.position-alternate .timeline-item.item-top .timeline-marker {
    left: auto;
    right: calc(50% - 10px);
}

/* ============================================
   HORIZONTAL LAYOUT
   ============================================ */
.timeline-horizontal {
    overflow-x: auto;
    overflow-y: hidden;
    padding: 40px 0 20px 0;
}

.timeline-horizontal::before {
    content: "";
    position: absolute;
    top: 30px;
    left: 0;
    right: 0;
    height: 3px;
    background: #e0e0e0;
}

.timeline-horizontal .timeline-wrapper {
    display: flex;
    flex-wrap: nowrap;
    gap: 30px;
    padding: 0 20px;
    min-width: min-content;
}

.timeline-horizontal .timeline-item {
    position: relative;
    flex: 0 0 300px;
    width: 300px;
}

/* Horizontal - Bottom Position (Default) */
.timeline-horizontal .timeline-item,
.timeline-horizontal.position-bottom .timeline-item {
    padding-top: 50px;
}

.timeline-horizontal .timeline-marker,
.timeline-horizontal.position-bottom .timeline-marker {
    position: absolute;
    left: 50%;
    top: 21px;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #2196F3;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px #e0e0e0;
    z-index: 1;
}

/* Horizontal - Top Position */
.timeline-horizontal.position-top .timeline-item {
    padding-top: 0;
    padding-bottom: 50px;
    display: flex;
    flex-direction: column-reverse;
}

.timeline-horizontal.position-top .timeline-marker {
    position: absolute;
    left: 50%;
    top: auto;
    bottom: 21px;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #2196F3;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px #e0e0e0;
    z-index: 1;
}

/* Horizontal - Alternate Position */
.timeline-horizontal.position-alternate .timeline-item:nth-child(odd) {
    padding-top: 50px;
    padding-bottom: 0;
}

.timeline-horizontal.position-alternate .timeline-item:nth-child(even) {
    padding-top: 0;
    padding-bottom: 50px;
    display: flex;
    flex-direction: column-reverse;
}

.timeline-horizontal.position-alternate .timeline-item:nth-child(odd) .timeline-marker {
    top: 21px;
    bottom: auto;
}

.timeline-horizontal.position-alternate .timeline-item:nth-child(even) .timeline-marker {
    top: auto;
    bottom: 21px;
}

.timeline-horizontal .timeline-content {
    height: 100%;
}

.timeline-horizontal .timeline-image img {
    max-height: 200px;
    object-fit: cover;
}

.timeline-horizontal .timeline-title {
    font-size: 20px;
}

/* ============================================
   RESPONSIVE STYLES
   ============================================ */
@media (max-width: 768px) {
    /* Vertical Layout Mobile */
    .timeline-vertical::before,
    .timeline-vertical.position-alternate::before,
    .timeline-vertical.position-top::before {
        left: 10px !important;
        transform: none;
    }
    
    .timeline-vertical .timeline-item,
    .timeline-vertical.position-alternate .timeline-item,
    .timeline-vertical.position-top .timeline-item {
        width: 100% !important;
        padding-left: 40px !important;
        padding-right: 0 !important;
        padding-bottom: 0 !important;
    }
    
    .timeline-vertical .timeline-marker,
    .timeline-vertical.position-alternate .timeline-marker,
    .timeline-vertical.position-top .timeline-marker {
        left: 1px !important;
        right: auto !important;
        top: 0 !important;
        bottom: auto !important;
    }
    
    .timeline-vertical .timeline-title {
        font-size: 20px;
    }
    
    /* Horizontal Layout Mobile - Convert to Vertical */
    .timeline-horizontal {
        padding: 20px 0;
    }
    
    .timeline-horizontal::before {
        top: 0;
        left: 10px;
        right: auto;
        bottom: 0;
        width: 3px;
        height: auto;
    }
    
    .timeline-horizontal .timeline-wrapper {
        flex-direction: column;
        gap: 0;
        padding: 0;
    }
    
    .timeline-horizontal .timeline-item,
    .timeline-horizontal.position-top .timeline-item,
    .timeline-horizontal.position-alternate .timeline-item {
        flex: 1;
        width: 100% !important;
        padding-top: 0 !important;
        padding-bottom: 0 !important;
        padding-left: 40px;
        margin-bottom: 40px;
        flex-direction: column;
    }
    
    .timeline-horizontal .timeline-marker,
    .timeline-horizontal.position-top .timeline-marker,
    .timeline-horizontal.position-alternate .timeline-marker {
        left: 1px !important;
        top: 0 !important;
        bottom: auto !important;
        transform: none !important;
    }
}

/* Scrollbar Styling for Horizontal Timeline */
.timeline-horizontal::-webkit-scrollbar {
    height: 8px;
}

.timeline-horizontal::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.timeline-horizontal::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 10px;
}

.timeline-horizontal::-webkit-scrollbar-thumb:hover {
    background: #555;
}