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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

/* Navigation */
nav {
    background: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
    text-decoration: none;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: #555;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover, nav a.active {
    color: #3498db;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Sections */
section {
    padding: 4rem 0;
    min-height: 100vh;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #2c3e50;
}

/* Home Section */
#home {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    min-height: 90vh; /* Adjustment for separate page */
}

.home-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
    width: 100%;
}

.profile-photo {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.intro h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.intro p {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
}

.contact-info {
    margin: 1.5rem 0;
    font-size: 1.1rem;
}

.contact-info a {
    color: white;
    text-decoration: none;
    border-bottom: 2px solid rgba(255,255,255,0.3);
    transition: border-color 0.3s;
}

.contact-info a:hover {
    border-color: white;
}

.btn {
    display: inline-block;
    margin-top: 1.5rem;
    margin-right: 1rem;
    padding: 0.8rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.btn-primary {
    background: white;
    color: #667eea;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

/* Resume Section */
#resume {
    background: white;
}

.summary {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 3rem;
    border-left: 4px solid #667eea;
}

.experience, .education, .skills, .publications {
    margin-bottom: 3rem;
}

.experience h3, .education h3, .skills h3, .publications h3 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    border-bottom: 2px solid #667eea;
    padding-bottom: 0.5rem;
}

.job, .edu-item, .pub-item {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.job:hover, .edu-item:hover, .pub-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.job-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.job-title {
    font-weight: 700;
    font-size: 1.2rem;
    color: #2c3e50;
}

.job-date {
    color: #7f8c8d;
    font-style: italic;
}

.job-company {
    color: #667eea;
    font-weight: 600;
    margin-bottom: 1rem;
}

.job ul {
    margin-left: 1.5rem;
}

.job li {
    margin-bottom: 0.5rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.skill-category {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.skill-category h4 {
    color: #2c3e50;
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.skill-category p {
    color: #555;
}

/* Photography Section */
#photography {
    background: #f8f9fa;
    min-height: auto;
}

.photo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.photo-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    aspect-ratio: 4/3;
}

.photo-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Footer */
footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .home-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .profile-photo {
        margin: 0 auto;
    }

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

    nav ul {
        gap: 1rem;
    }

    nav .container {
        flex-direction: column;
        gap: 1rem;
    }

    .job-header {
        flex-direction: column;
    }
}