body {
    background-color: #000;
    color: #ffbf00;
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    text-align: center;
    padding: 20px;
}

.logo {
    max-width: 150px;
    height: auto;
}

h1, h2, h3 {
    color: #00ff00;
}

a {
    color: #ffbf00;
    text-decoration: none;
    padding: 5px 10px;
    border: 1px solid #ffbf00;
    transition: all 0.3s ease;
}

a:hover {
    background-color: #ffbf00;
    color: #000;
}

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

.login, .admin, .book-form, .site-description, .links-section {
    margin-bottom: 40px;
}

.login .toggle-login {
    background-color: #222;
    color: #ffbf00;
    border: 1px solid #ffbf00;
    padding: 10px;
    cursor: pointer;
    font-family: 'Courier New', Courier, monospace;
}

.login .toggle-login:hover {
    background-color: #ffbf00;
    color: #000;
}

.login-form {
    margin-top: 10px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

label {
    display: flex;
    flex-direction: column;
}

input, textarea, button {
    background-color: #222;
    color: #ffbf00;
    border: 1px solid #ffbf00;
    padding: 8px;
    font-family: 'Courier New', Courier, monospace;
}

button {
    cursor: pointer;
    padding: 10px;
}

button:hover {
    background-color: #ffbf00;
    color: #000;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.book {
    border: 1px solid #ffbf00;
    padding: 15px;
    text-align: center;
}

.book img {
    max-width: 100%;
    height: auto;
}

.links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.link {
    border: 1px solid #ffbf00;
    padding: 15px;
}

footer {
    text-align: center;
    padding: 20px;
    border-top: 1px solid #ffbf00;
}

/* Responsive Design */
@media (max-width: 768px) {
    .grid, .links-grid {
        grid-template-columns: 1fr;
    }

    header, section, footer {
        padding: 15px;
    }

    .logo {
        max-width: 100px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5em;
    }

    h2, h3 {
        font-size: 1.2em;
    }

    input, textarea, button {
        font-size: 0.9em;
    }
}