/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --border-color: #e0e0e0;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

.subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Sections */
section {
    padding: 60px 20px;
}

section:nth-child(even) {
    background-color: var(--light-bg);
}

section h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-weight: 600;
}

section p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
}

/* Intro Section */
.intro {
    text-align: center;
}

.intro h2 {
    margin-bottom: 15px;
}

.intro p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.skill-item {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-color: var(--secondary-color);
}

.skill-item h3 {
    color: var(--secondary-color);
    font-size: 1.3rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.skill-item p {
    font-size: 1rem;
    color: #666;
}

/* Contact Section */
.contact {
    text-align: center;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.contact-links a {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--secondary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid var(--secondary-color);
}

.contact-links a:hover {
    background-color: transparent;
    color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 30px 20px;
}

footer p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.2rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    section {
        padding: 40px 20px;
    }

    section h2 {
        font-size: 1.6rem;
    }

    section p {
        font-size: 1rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .contact-links a {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    header {
        padding: 60px 20px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    section {
        padding: 30px 15px;
    }
}