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

body {
    font-family: Arial, sans-serif;
    background-color: #0d1117;
    color: white;
    line-height: 1.6;
}

header {
    background-color: #161b22;
    padding: 20px 50px;
    border-bottom: 1px solid #30363d;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: #58a6ff;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li { 
    margin-left: 25px;
}

.nav-links a {
    text-decoration: none;
    color: white;
    transition: 0.3s;
}

.nav-links a:hover {
    color: #58a6ff;
}

.hero {
    height: 40vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 20px;
}

.hero h2 {
    color: #58a6ff;
    margin-bottom: 15px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #c91dd9;
}

.btn {
    display: inline-block;
    padding: 12px 25px; 
    background-color: #238636;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: 0.3s;
}

.btn:hover {
    background-color: #2ea043;
}

.overview {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 60px 40px;
    flex-wrap: wrap;
}

.card {
    background-color: #161b22;
    padding: 30px;
    border-radius: 12px;
    width: 300px;
    border: 1px solid #30363d;
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-8px);
    border-color: #58a6ff;
}

.card h3 {
    margin-bottom: 15px;
    color: #58a6ff;
}

.card p { 
    color: #c9d1d9;
}

footer { 
    text-align: center;
    padding: 20px;
    border-top: 1px solid #30363d;
    margin-top: 40px;
    color: #8b949e;
}

@media(max-width: 768px) {
    nav {
        flex-direction: column;
    }

    .nav-links {
        margin-top: 20px;
    }

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

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