:root {
    --primary-color: #000;
    --secondary-color: #666;
    --background-color: #fff;
    --accent-color: #f5f5f5;
    --transition: all 0.3s ease;
    --spacing-unit: 1rem;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: var(--primary-color);
    background-color: var(--background-color);
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--background-color);
    z-index: 1000;
    padding: 1.5rem 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 4rem;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary-color);
    margin: 4px 0;
    transition: var(--transition);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    opacity: 0.7;
}

/* Hero Section */
.hero {
    padding: 6.4rem 0 3.2rem;
}

.hero .container {
    max-width: 1200px;
    padding: 0 4rem;
    display: flex;
    align-items: center;
    gap: 3rem;
}

.hero-content {
    flex: 0.8;
    max-width: 450px;
    padding-right: 1rem;
}

.hero h1 {
    font-size: 2.2rem;
    font-weight: 700;
}

.hero-info {
    max-width: 450px;
}

.subtitle {
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.experience, .education {
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.hero-image {
    flex: 1.2;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    width: 100%;
    min-height: 320px;
    padding: 1.6rem;
}

.image-placeholder {
    width: 100%;
    height: 500px;
    background-color: var(--accent-color);
    border-radius: 8px;
}

#lottie-hero {
    width: 100%;
    max-width: 680px;
    height: auto;
    margin: 0;
    display: block;
    background: none;
    transition: all 0.3s ease;
}

.lottie-fallback {
    width: 100%;
    max-width: 800px;
    height: 500px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #aaa;
    font-size: 1.2rem;
    background: var(--accent-color);
    border-radius: 8px;
}

/* Work Section */
.work {
    padding: 4.8rem 0;
}

.work .container {
    max-width: 1200px;
    padding: 0 4rem;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.work h2 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 3.2rem;
    max-width: 100%;
    margin-left: 0;
}

.work-grid {
    display: flex;
    flex-direction: column;
    gap: 2.4rem;
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

.work-item {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 0;
    background: none;
    border-radius: 0;
    transition: var(--transition);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding-bottom: 2.4rem;
    cursor: pointer;
}

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

.work-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    flex-wrap: wrap;
}

.work-header .year {
    font-size: 1rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.work-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

.work-header .separator {
    color: var(--secondary-color);
}

.work-header .project-type {
    color: var(--secondary-color);
    font-size: 1rem;
}

.work-item .description {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--primary-color);
    margin: 1rem 0;
}

.work-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    margin-top: 0.5rem;
    transition: var(--transition);
}

.work-link:hover {
    opacity: 0.7;
}

.work-image {
    width: 100%;
    aspect-ratio: 1.6;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    background-color: var(--accent-color);
}

.work-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.work-item:hover .work-image img {
    transform: scale(1.02);
}

.work-link-wrapper {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: var(--transition);
}

.work-link-wrapper:hover {
    transform: translateY(-4px);
}

.work-link-wrapper:hover .work-image img {
    transform: scale(1.02);
}

/* Contact Section */
.contact {
    padding: 4rem 0;
    text-align: center;
}

.email {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.view-note {
    font-size: 0.875rem;
    color: var(--secondary-color);
}

/* Footer */
footer {
    padding: 2rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: 0.875rem;
    color: var(--secondary-color);
}

.social-links {
    display: flex;
    gap: 2rem;
}

.social-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.social-links a:hover {
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        padding: 0 2rem;
    }
    
    .hero .container,
    .work .container {
        padding: 0 2rem;
    }
    
    .hero-content {
        max-width: 500px;
    }
    
    .nav-content {
        padding: 0 2rem;
    }
    
    #lottie-hero {
        max-width: 500px;
        height: 320px;
    }
    
    .work .container {
        padding: 0 2rem;
    }
    
    .work-grid {
        max-width: 100%;
    }
    
    .work h2, .work-grid {
        max-width: 100%;
    }
}

@media (max-width: 992px) {
    .hero .container {
        gap: 3rem;
    }
    
    .hero-content {
        max-width: 450px;
    }
    
    .hero h1 {
        font-size: 2.4rem;
    }
    
    .work-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    #lottie-hero {
        max-width: 420px;
        height: 280px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .nav-content {
        padding: 0 1.5rem;
    }
    
    .hero .container,
    .work .container {
        padding: 0 1.5rem;
    }
    
    .hero .container {
        flex-direction: column;
        gap: 2rem;
    }
    
    .hero-content {
        order: 2;
        max-width: 100%;
        padding-right: 0;
        text-align: center;
    }
    
    .hero-image {
        order: 1;
        justify-content: center;
        margin-top: 0;
        min-height: 240px;
        padding: 1rem;
        width: 100%;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.125rem;
    }
    
    .experience, .education {
        font-size: 1rem;
    }
    
    .work-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .image-placeholder {
        height: 300px;
    }
    
    footer .container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        background: var(--background-color);
        padding: 0;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        z-index: 1000;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }
    
    .nav-links.active {
        display: flex;
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links a {
        font-size: 1.25rem;
        padding: 0.5rem 0;
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }
    
    .nav-links.active a {
        opacity: 1;
        transform: translateY(0);
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    body.menu-open {
        overflow: hidden;
    }
    
    #lottie-hero {
        max-width: 100%;
        height: 280px;
    }
    
    .work h2, .work-grid {
        max-width: 100%;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 1.25rem;
    }
    
    .hero .container,
    .work .container {
        padding: 0 1.25rem;
    }
    
    .nav-content {
        padding: 0 1.25rem;
    }
    
    .hero h1 {
        font-size: 1.6rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .experience, .education {
        font-size: 0.875rem;
    }
    
    .image-placeholder {
        height: 250px;
    }
    
    .work h2 {
        font-size: 1.75rem;
    }
    
    .work-content h3 {
        font-size: 1.125rem;
    }
    
    .email {
        font-size: 1rem;
    }
    
    .hero-image {
        min-height: 200px;
        padding: 0.5rem;
    }
    
    #lottie-hero {
        height: 240px;
    }
    

}

/* Additional Mobile Optimizations */
@media (max-width: 768px) {
    .work {
        padding: 4rem 0;
    }
    

    
    .contact {
        padding: 3rem 0;
    }
    
    .email {
        display: inline-block;
        padding: 0.75rem 1.5rem;
        background: var(--accent-color);
        border-radius: 4px;
        transition: var(--transition);
    }
    
    .email:hover {
        background: var(--primary-color);
        color: var(--background-color);
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1, .hero-info, .work-item {
    animation: fadeIn 0.8s ease-out forwards;
}

.hero h1 {
    animation-delay: 0.2s;
}

.hero-info {
    animation-delay: 0.4s;
}

.work-item {
    animation-delay: 0.6s;
}

.keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1rem 0;
}

.keywords span {
    font-size: 0.875rem;
    color: #666;
    background-color: #f5f5f5;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    transition: var(--transition);
}

.keywords span:hover {
    background-color: #e5e5e5;
}

@media (max-width: 768px) {
    .keywords {
        gap: 0.5rem;
    }
    
    .keywords span {
        font-size: 0.8125rem;
        padding: 0.2rem 0.6rem;
    }
}

.keyword {
    font-size: 1rem;
    color: #666;
    margin-bottom: 0.5rem;
    font-weight: 500;
}