/* sections/about.css */
.about-section {
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.about-container {
    position: relative;
    z-index: 1;
}

/* Academic Background */
.academic-timeline {
    position: relative;
    padding-left: 3rem;
}

.timeline-line {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--secondary-blue);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid #E3F2FD;
}

.timeline-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.timeline-dot {
    position: absolute;
    left: -3rem;
    width: 1rem;
    height: 1rem;
    background: var(--deep-blue);
    border: 2px solid white;
    border-radius: 50%;
    transform: translateX(50%);
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

/* Research Interests */
.research-interests {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.interest-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.interest-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.interest-icon {
    width: 3rem;
    height: 3rem;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill-item {
    background: white;
    padding: 1rem;
    border-radius: 0.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .about-section {
        padding: 4rem 0;
    }

    .academic-timeline {
        padding-left: 2rem;
    }

    .timeline-dot {
        left: -2rem;
    }

    .timeline-content {
        padding: 1.5rem;
    }

    .research-interests {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .academic-timeline {
        padding-left: 1.5rem;
    }

    .timeline-dot {
        left: -1.5rem;
    }

    .timeline-content {
        padding: 1rem;
    }
}