body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(to bottom, #1a1a1a, #333);
    color: #fff;
    line-height: 1.6;
}

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

header {
    text-align: center;
    padding: 60px 20px;
    background: #000;
    border-bottom: 2px solid #444;
}

h1 {
    font-size: 3em;
    margin: 0;
}

h2 {
    font-size: 2em;
    border-bottom: 1px solid #555;
    padding-bottom: 10px;
}

section {
    padding: 40px 0;
}

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

ul li {
    background: #444;
    margin: 10px 0;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: transform 0.2s;
}

ul li:hover {
    transform: scale(1.02);
}

form {
    display: flex;
    flex-direction: column;
    max-width: 600px;
    margin: 0 auto;
}

input, textarea {
    margin: 10px 0;
    padding: 15px;
    border: none;
    border-radius: 8px;
    background: #555;
    color: #fff;
}

button {
    padding: 15px;
    background: #007aff;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background: #005bb5;
}

.success {
    color: #4caf50;
    text-align: center;
}

.error {
    color: #f44336;
    text-align: center;
}

.social-links, .other-sites {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
}

a {
    color: #007aff;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #fff;
}

footer {
    text-align: center;
    padding: 20px;
    background: #000;
    border-top: 2px solid #444;
}

@media (max-width: 768px) {
    h1 { font-size: 2.5em; }
    h2 { font-size: 1.5em; }
    .social-links, .other-sites { flex-direction: column; }
}