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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #121212; 
    color: #ffffff; 
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-color: #1e1e1e; 
    color: #ffffff;
    padding: 20px 0;
    text-align: center;
    box-shadow: none;
    position: sticky;
    top: 0;
    z-index: 1000;
}

header h1 {
    font-size: 2.5rem;
    letter-spacing: 1.5px;
    margin-bottom: 10px;
    font-weight: 700;
    font-family: 'Segoe UI Black', sans-serif;
}

nav {
    margin-top: 10px;
}

nav a {
    color: #bbbbbb; 
    text-decoration: none;
    margin: 0 15px;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 8px 12px;
    border-radius: 3px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

nav a:hover,
nav a:focus {
    background-color: #66aaff; 
    color: #121212; /
    outline: none;
}

main {
    flex: 1;
    max-width: 900px;
    background-color: #1e1e1e; 
    margin: 30px auto;
    padding: 30px 40px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.7);
}

main h2 {
    color: #ffffff; 
    margin-bottom: 20px;
    font-weight: 700;
    font-size: 2rem;
    border-bottom: 2px solid #66aaff; 
    padding-bottom: 8px;
}

main p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: #bbbbbb; 
}

main img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: none;
}

footer {
    background-color: #1e1e1e; 
    color: #bbbbbb; 
    text-align: center;
    padding: 15px 10px;
    font-size: 0.9rem;
    box-shadow: none;
}

footer a {
    color: #66aaff; 
    text-decoration: none;
    margin: 0 8px;
    transition: color 0.3s ease;
}

footer a:hover,
footer a:focus {
    color: #ffffff;
    outline: none;
}


@media (max-width: 600px) {
    main {
        margin: 20px 15px;
        padding: 20px;
    }

    nav a {
        margin: 0 8px;
        font-size: 1rem;
        padding: 6px 8px;
    }

    header h1 {
        font-size: 1.8rem;
    }
}

main a {
    color: #66aaff;
    text-decoration: none;
    transition: color 0.3s ease;
}

main a:hover,
main a:focus {
    color: #aaddff;
    text-decoration: underline;
    outline: none;
}