* {
    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;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

nav {
    background: #2d3748;
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

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

nav a:hover {
    color: #667eea;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

section {
    margin-bottom: 4rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #2d3748;
    border-bottom: 3px solid #667eea;
    display: inline-block;
    padding-bottom: 0.5rem;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.about-text {
    font-size: 1.1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.skill-category {
    background: #f7fafc;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.skill-category h3 {
    margin-bottom: 1rem;
    color: #2d3748;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    padding: 0.3rem 0;
    color: #4a5568;
}

.skill-category li:before {
    content: "▸ ";
    color: #667eea;
    font-weight: bold;
}

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

.project-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.project-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    margin-bottom: 0.5rem;
    color: #2d3748;
}

.project-content p {
    color: #4a5568;
    margin-bottom: 1rem;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: #667eea;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background 0.3s;
    font-size: 0.9rem;
}

.btn:hover {
    background: #5568d3;
}

.btn-secondary {
    background: #4a5568;
}

.btn-secondary:hover {
    background: #2d3748;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    font-size: 1.1rem;
}

.contact-info a {
    color: #667eea;
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

footer {
    background: #2d3748;
    color: white;
    text-align: center;
    padding: 2rem;
}

@media (max-width: 768px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 2rem;
    }

    nav ul {
        gap: 1rem;
    }
}