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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 1rem;
}

nav ul li {
    margin: 0 1.5rem;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 600;
    transition: color 0.3s;
    position: relative;
}

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

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s;
}

nav ul li a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

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

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero .tagline {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

/* Section Styles */
section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: #667eea;
    position: relative;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
}

/* About Section */
.about-content {
    display: flex;
    gap: 3rem;
    align-items: center;
    flex-wrap: wrap;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.contact-item a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s;
}

.contact-item a:hover {
    color: #764ba2;
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.skill-category:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.skill-category h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.skill-tag {
    display: inline-block;
    background: white;
    padding: 0.5rem 1rem;
    margin: 0.3rem;
    border-radius: 20px;
    font-size: 0.9rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.project-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
}

.project-header h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.project-year {
    font-size: 0.9rem;
    opacity: 0.9;
}

.project-body {
    padding: 1.5rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-badge {
    background: #e9ecef;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    color: #667eea;
    font-weight: 600;
}

/* Education Section */
.education-timeline {
    position: relative;
    padding-left: 2rem;
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #667eea, #764ba2);
}

.education-item {
    margin-bottom: 2.5rem;
    position: relative;
    padding-left: 2rem;
}

.education-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 0;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #667eea;
    border: 3px solid white;
    box-shadow: 0 0 0 3px #667eea;
}

.education-item h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
}

.education-item .degree {
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.education-item .year {
    color: #666;
    font-style: italic;
}

/* Certifications */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    transition: transform 0.3s;
}

.cert-card:hover {
    transform: scale(1.05);
}

/* Accomplishments */
.accomplishments-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.accomplishment-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-left: 4px solid #667eea;
    border-radius: 5px;
    font-size: 1.1rem;
}

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

/* Scroll Animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s, transform 0.8s;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .tagline {
        font-size: 1.2rem;
    }

    nav ul {
        flex-wrap: wrap;
    }

    nav ul li {
        margin: 0.5rem 1rem;
    }

    section {
        padding: 3rem 1rem;
    }

    .about-content {
        flex-direction: column;
    }
}