:root {
    --primary: #0e75b6;
    --dark: #121212;
    --light: #f4f4f4;
    --gray: #2d2d2d;
    --card-bg: #1e1e1e;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark);
    color: var(--light);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn:hover {
    background-color: transparent;
    border-color: var(--primary);
    transform: translateY(-3px);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5rem;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary);
    margin: 15px auto;
    border-radius: 2px;
}

/* Responsive Design */
@media (max-width: 900px) {
    .hero h1 {
        font-size: 2.8rem;
    }

    .about-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding-top: 80px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .projects-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}