:root {
    --primary-blue: #2563eb;
    --text-main: #333333;
    --text-muted: #666666;
    --bg-color: #DDDDDD;
    --link-hover: #1d4ed8;
    --font-header: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Newsreader', Georgia, serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: 19px;
    line-height: 1.65;
    color: var(--text-main);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    padding: 60px 20px;
}

.container {
    max-width: 680px;
    margin: 0 auto;
}

header {
    margin-bottom: 50px;
}

.logo {
    width: 44px;
    height: 44px;
    background-color: var(--primary-blue);
    border-radius: 8px; /* Slightly rounded as in screenshot */
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    transition: transform 0.2s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo span {
    color: white;
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.5px;
}

h1 {
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 24px;
    letter-spacing: 0.5px;
    margin-bottom: 25px;
    color: #1a1a1a;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav ul li {
    position: relative;
}

nav ul li a {
    text-decoration: none;
    color: var(--primary-blue);
    font-family: var(--font-header);
    font-weight: 500;
    font-size: 17px;
    transition: opacity 0.2s ease;
}

nav ul li a:hover {
    opacity: 0.8;
}

nav ul li.active .dot {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 5px;
    height: 5px;
    background-color: var(--primary-blue);
    border-radius: 50%;
}

.section-title {
    font-family: var(--font-header);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.certificate-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.cert-logo {
    width: 60px;
    height: auto;
    border-radius: 6px;
    background-color: white;
    padding: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    opacity: 1;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cert-logo:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.cert-info {
    flex: 1;
}

.cert-name {
    font-family: var(--font-header);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--text-main);
}

.cert-issuer {
    font-size: 16px;
    color: var(--text-main);
    margin-bottom: 2px;
}

.cert-date {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.work-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 30px;
}

.work-logo {
    width: 60px;
    height: auto;
    border-radius: 8px;
    background-color: white;
    padding: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.work-logo:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.work-info {
    flex: 1;
}

.work-title {
    font-family: var(--font-header);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.work-description {
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-main);
}

.education-item {
    margin-bottom: 20px;
}

.education-degree {
    font-family: var(--font-header);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 2px;
}

.education-school, .education-date {
    font-size: 16px;
    color: var(--text-main);
    margin-bottom: 2px;
}

.honor-item {
    margin-bottom: 30px;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    background-color: white;
    color: var(--text-main);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    border: 1px solid #e0e0e0;
    transition: all 0.2s ease;
}

.skill-tag:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.honor-info {
    margin-bottom: 12px;
}

.honor-title {
    font-family: var(--font-header);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 2px;
}

.honor-date {
    font-size: 16px;
    color: var(--text-main);
}

.honor-description {
    font-size: 17px;
    line-height: 1.6;
    margin-bottom: 15px;
    color: var(--text-main);
}

.honor-gallery {
    display: flex;
    gap: 15px;
}

.honor-img {
    width: 120px;
    height: 80px;
    object-fit: cover;
    border-radius: 6px;
    background-color: white;
    padding: 3px;
    border: 1px solid #eee;
    transition: transform 0.2s ease;
    cursor: pointer;
}

.honor-img:hover {
    transform: scale(1.05);
}

main section {
    margin-bottom: 60px;
}

main {
    margin-bottom: 80px;
}

.about p {
    margin-bottom: 24px;
    font-weight: 400;
}

.link-primary {
    color: var(--primary-blue);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    font-weight: 600;
    transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.link-primary:hover {
    color: var(--link-hover);
    text-decoration-thickness: 2px;
}

footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid #f0f0f0;
    color: var(--text-muted);
    font-size: 15px;
}

.footer-right {
    display: flex;
    gap: 15px;
}

.footer-right a {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.footer-right a:hover {
    color: var(--text-main);
}

/* Lightbox Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    max-width: 85%;
    max-height: 85%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 30px;
    right: 40px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s ease;
}

.modal-close:hover {
    color: var(--primary-blue);
}

@media (max-width: 600px) {
    body {
        padding: 40px 20px;
    }
    
    footer {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
    }
}