/* Reset some default styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    line-height: 1.6;
    padding-bottom: 50px;
}

/* Header styles */
.opt {
    background-color: #000000;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

header nav ul {
    list-style: none;
    padding: 0;
}

header nav ul li {
    display: inline;
    margin: 0 1rem;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
}

header nav ul li a:hover {
    text-decoration: underline;
}


/* Header styling */
header {
    background-color: #1f1f1f;
    padding: 40px 20px;
    text-align: center;
}

header img {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    margin-bottom: 15px;
    border: 3px solid #333;
}

/* Section styling */
section {
    background-color: #1a1a1a;
    margin: 20px;
    padding: 20px;
    border-radius: 8px;
}

h1, h2, h3 {
    color: #ffffff;
    margin-bottom: 10px;
}

a {
    color: #66b2ff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Projects */
.project {
    margin-bottom: 20px;
}

/* Footer */
footer {
    background-color: #1f1f1f;
    color: #aaa;
    text-align: center;
    padding: 20px;
    position: relative;
}

/* Responsive Design */
@media (max-width: 768px) {
    header img {
        width: 100px;
        height: 100px;
    }

    section {
        margin: 10px;
        padding: 15px;
    }

    h1 {
        font-size: 1.8em;
    }

    h2 {
        font-size: 1.4em;
    }

    h3 {
        font-size: 1.2em;
    }
}