body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0b0e14;
    color: #e0e0e0;
    line-height: 1.6;
    margin: 0;
}

header {
    background: #1a1f29;
    padding: 1rem;
    text-align: center;
    border-bottom: 2px solid #3498db;
}

nav a {
    color: #3498db;
    margin: 0 15px;
    text-decoration: none;
}

.container {
    width: 80%;
    margin: 20px auto;
    background: #161b22;
    padding: 20px;
    border-radius: 8px;
}

input, textarea {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    background: #0d1117;
    border: 1px solid #30363d;
    color: white;
}

button {
    background: #3498db;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #2980b9;
}