/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* Header and Navigation */
header {
    background-color: #2c3e50;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

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

nav a {
    color: #ecf0f1;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #3498db;
}

/* Sections */
section {
    padding: 5rem 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

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

/* Home Section */
#home {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: white;
    text-align: center;
}

#home h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.social-links {
    margin-top: 2rem;
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.social-links a {
    color: white;
    font-size: 2rem;
    transition: transform 0.3s;
}

.social-links a:hover {
    transform: translateY(-5px);
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
}

.skill-category {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.skill-category h3 {
    margin-bottom: 1rem;
    color: #3498db;
}

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

.skill-category li {
    margin: 0.5rem 0;
    padding: 0.5rem;
    background: #f8f9fa;
    border-radius: 5px;
}

/* Category Sections */
.category-section {
    margin-bottom: 4rem;
    width: 100%;
}

.category-section h3 {
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.category-section h3::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: #3498db;
    margin: 0.5rem auto;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-card h3 {
    color: #3498db;
    margin-bottom: 1rem;
}

.project-card a {
    display: inline-block;
    margin-top: 1rem;
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
}

.project-card a:hover {
    text-decoration: underline;
}

/* Achievements Section */
.achievements-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
}

.achievement-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.achievement-card h3 {
    color: #3498db;
    margin-bottom: 1rem;
}

.achievement-card ul {
    list-style: none;
}

.achievement-card li {
    margin: 0.5rem 0;
    padding: 0.5rem;
    background: #f8f9fa;
    border-radius: 5px;
}

/* Contact Section */
.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
}

.contact-info p {
    margin: 1rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.contact-info i {
    color: #3498db;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    section {
        padding: 3rem 1rem;
    }

    #home h1 {
        font-size: 2rem;
    }

    .projects-grid,
    .skills-container,
    .achievements-container {
        grid-template-columns: 1fr;
    }
}