/* Timeline Specific Styles overriding base aesthetics */
:root {
    --color-bg: #050505;
    --color-text: #f0f0f0;
    --color-text-muted: #a0a0a0;
    --color-orange: #ff6a00;
    --color-blue: #00d2ff;
    --color-card: rgba(20, 20, 20, 0.6);
    --color-card-border: rgba(255, 255, 255, 0.05);
}

[data-theme="light"] {
    --color-bg: #f8f9fa;
    --color-text: #212529;
    --color-text-muted: #6c757d;
    --color-card: rgba(255, 255, 255, 0.9);
    --color-card-border: rgba(0, 0, 0, 0.1);
}

.timeline-header {
    text-align: center;
    padding: 100px 20px 40px;
    background: radial-gradient(circle at top, rgba(0, 210, 255, 0.1) 0%, transparent 70%);
}

.timeline-header h1 {
    font-size: 3rem;
    color: var(--color-blue);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.timeline-header p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Timeline Core */
.timeline-container {
    position: relative;
    max-width: 1000px;
    margin: 40px auto;
    padding: 20px;
}

/* The vertical line */
.timeline-container::after {
    content: '';
    position: absolute;
    width: 4px;
    background: linear-gradient(to bottom, var(--color-blue), var(--color-orange));
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
    border-radius: 2px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
    box-sizing: border-box;
}

/* Position Left */
.timeline-item.left {
    left: 0;
}

/* Position Right */
.timeline-item.right {
    left: 50%;
}

/* The dot on the timeline */
.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: var(--color-bg);
    border: 4px solid var(--color-orange);
    top: 20px;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 10px var(--color-orange);
}

.timeline-item.right::after {
    left: -10px;
    border-color: var(--color-blue);
    box-shadow: 0 0 10px var(--color-blue);
}

/* Cards */
.timeline-content.card {
    background: var(--color-card);
    border: 1px solid var(--color-card-border);
    backdrop-filter: blur(5px);
    border-radius: 15px;
    padding: 25px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-content.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.1);
}

.timeline-date {
    display: inline-block;
    padding: 5px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    font-size: 0.78rem;
    color: var(--color-orange);
    margin-bottom: 12px;
    font-weight: 600;
    letter-spacing: 0.4px;
}

.timeline-item.right .timeline-date {
    color: var(--color-blue);
}

.timeline-title {
    color: var(--color-text);
    font-size: 1.2rem;
    line-height: 1.35;
    margin-bottom: 10px;
}

.timeline-title-link {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

.timeline-item.left .timeline-title-link:hover {
    color: var(--color-orange);
}

.timeline-item.right .timeline-title-link:hover {
    color: var(--color-blue);
}

.timeline-item.left .timeline-title {
    border-left: 3px solid var(--color-orange);
    padding-left: 10px;
}

.timeline-item.right .timeline-title {
    border-left: 3px solid var(--color-blue);
    padding-left: 10px;
}

.timeline-content h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.timeline-content h2 a {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.3s;
}

.timeline-content h2 a:hover {
    color: var(--color-orange);
}

.timeline-item.right .timeline-content h2 a:hover {
    color: var(--color-blue);
}

.timeline-summary {
    color: var(--color-text-muted);
    font-size: 0.93rem;
    margin-bottom: 14px;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.timeline-readmore {
    display: inline-block;
    color: var(--color-text);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
    transition: color 0.3s;
}

.timeline-readmore:hover {
    color: var(--color-orange);
}

.timeline-item.right .timeline-readmore:hover {
    color: var(--color-blue);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media screen and (max-width: 768px) {
    .timeline-container::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 20px;
    }
    
    .timeline-item.right {
        left: 0%;
    }
    
    .timeline-item.left::after, 
    .timeline-item.right::after {
        left: 21px;
    }
    
    .timeline-item.left::after {
        border-color: var(--color-orange);
        box-shadow: 0 0 10px var(--color-orange);
    }
}