/* About Page - Hero with intro, certs, skills */

.about-hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 20px;
    margin-bottom: 4rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.about-hero-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-intro {
    text-align: center;
}

.about-intro h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
    font-weight: 700;
}

.about-intro p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #555;
    max-width: 900px;
    margin: 0 auto;
}

/* Certifications Section */
.certifications-section {
    text-align: center;
    padding: 2rem 0;
}

.cert-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
}

.cert-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    min-width: 120px;
}

.cert-badge:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.cert-icon {
    font-size: 2.5rem;
}

.cert-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
}

/* Skills Section */
.skills-section {
    padding: 2rem 0;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.skill-category {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.skill-category h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e0e0e0;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    display: inline-block;
    padding: 0.4rem 0.85rem;
    background: #f8fafc;
    color: #475569;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: all 0.2s ease;
    cursor: default;
}

.skill-tag:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: #334155;
}

/* Legacy */
.about-intro-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem 2rem;
}

.about-intro-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-intro {
    text-align: center;
}

.about-intro h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
    font-weight: 700;
}

.about-intro p {
    font-size: 1.15rem;
    line-height: 1.8;
    color: #555;
    max-width: 800px;
    margin: 0 auto;
}

/* Certifications - compact pills, centered below intro */
.certifications-compact {
    display: flex;
    justify-content: center;
    margin-top: 0.5rem;
}

.cert-badges-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.cert-pill {
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: #5b7fa8;
    background: rgba(91, 127, 168, 0.12);
    border-radius: 20px;
}

/* Timeline Section - same container as intro for unified flow */
.timeline-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.timeline-header {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.timeline-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #5b7fa8 0%, #6b8db8 100%);
    border-radius: 2px;
}

/* Enhanced Timeline Styles - Add animation without overriding base styles */
/* Note: Base timeline-item styles are in timeline.css */
.timeline-section .timeline-item {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.timeline-section .timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-section .timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-section .timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-section .timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-section .timeline-item:nth-child(5) { animation-delay: 0.5s; }
.timeline-section .timeline-item:nth-child(6) { animation-delay: 0.6s; }
.timeline-section .timeline-item:nth-child(7) { animation-delay: 0.7s; }
.timeline-section .timeline-item:nth-child(8) { animation-delay: 0.8s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.timeline-content {
    margin-top: 0; /* card top aligns with circle/start date */
    background: white;
    padding: 1.5rem 1.6rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    line-height: 1.5;
}

/* Education cards: subtle background to distinguish from work */
.timeline-item--education .timeline-content {
    background: #f8fafc;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #5b7fa8 0%, #6b8db8 100%);
    border-radius: 10px 10px 0 0;
}

/* Card + circle linked on hover - subtle, elegant */
.timeline-section .timeline-item {
    cursor: pointer;
}

.timeline-section .timeline-item:nth-child(odd):hover .timeline-content {
    transform: translateX(4px);
    box-shadow: 0 6px 24px rgba(91, 127, 168, 0.12), 0 0 0 1px rgba(91, 127, 168, 0.08);
}

.timeline-section .timeline-item:nth-child(even):hover .timeline-content {
    transform: translateX(-4px);
    box-shadow: 0 6px 24px rgba(91, 127, 168, 0.12), 0 0 0 1px rgba(91, 127, 168, 0.08);
}

.timeline-section .timeline-item:hover .timeline-circle-left,
.timeline-section .timeline-item:hover .timeline-circle-right {
    transform: scale(1.1);
    box-shadow: 0 0 0 3px rgba(91, 127, 168, 0.15);
}

.timeline-content h3 {
    color: #2c3e50;
    font-size: 1.2rem;
    line-height: 1.4;
    margin: 0 0 0.5rem 0;
    font-weight: 600;
}

/* Date + location: metadata block, visually grouped */
.timeline-content .timeline-date {
    font-size: 0.9rem;
    font-weight: 500;
    color: #64748b;
    margin: 0.45rem 0 0.25rem 0;
    letter-spacing: 0.01em;
}

.timeline-content h4 {
    color: #64748b;
    font-size: 0.9rem;
    font-weight: 500;
    margin: 0 0 0.85rem 0;
}

.timeline-content p {
    color: #475569;
    line-height: 1.65;
    margin: 0;
    font-size: 0.95rem;
}

/* Timeline tags - light, subtle */
.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.timeline-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    color: #64748b;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(148, 163, 184, 0.12);
    transition: all 0.2s ease;
}

.timeline-tag:hover {
    background: rgba(148, 163, 184, 0.2);
    color: #475569;
}


/* Enhanced Timeline Circle */
.timeline-circle-left,
.timeline-circle-right {
    background: linear-gradient(135deg, #5b7fa8 0%, #6b8db8 100%);
    border: 4px solid white;
    box-shadow: 0 0 0 4px rgba(91, 127, 168, 0.2), 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.timeline-section .timeline-item:hover .timeline-circle-left,
.timeline-section .timeline-item:hover .timeline-circle-right {
    transform: scale(1.2);
    box-shadow: 0 0 0 6px rgba(91, 127, 168, 0.3), 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .about-hero {
        padding: 2rem 1rem;
        margin-bottom: 2rem;
    }

    .about-intro h1 {
        font-size: 2rem;
    }

    .about-intro p {
        font-size: 1rem;
    }

    .cert-badges {
        gap: 1rem;
    }

    .cert-badge {
        min-width: 100px;
        padding: 1rem 1.5rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .timeline-header {
        font-size: 2rem;
    }

    .timeline-section {
        padding: 2rem 1rem;
    }
}