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

body {
    font-family: "American Typewriter", Courier, sans-serif;
    background: url(background.jpg) no-repeat center center/cover;
    color: #fff;
    line-height: 1.6;
    padding-top: 60px;
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

header .logo {
    font-size: 1.8em;
    font-weight: bold;
}

header nav ul {
    list-style: none;
    display: flex;
    gap: 15px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
    padding: 8px 15px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    transition: background 0.3s;
}

header nav ul li a:hover {
    background: rgba(0, 0, 0, 0.8);
}

main .content-box {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 15px;
    padding: 20px;
    margin: 20px auto;
    max-width: 800px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.intro h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.download-btn {
    display: inline-block;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    text-decoration: none;
    padding: 10px 20px;
    margin: 10px 5px;
    border-radius: 10px;
    transition: background 0.3s;
    text-align: center;
}

.download-btn:hover {
    background: rgba(0, 0, 0, 0.8);
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 20px auto;
    padding: 20px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 15px;
    max-width: 500px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

form label {
    text-align: left;
    font-size: 1.1em;
}

form input,
form textarea {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 10px;
    font-size: 1em;
    margin-top: 5px;
}

form button {
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 1.1em;
    cursor: pointer;
    transition: background 0.3s;
}

form button:hover {
    background: rgba(0, 0, 0, 0.9);
}

footer {
    text-align: center;
    padding: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    margin-top: 20px;
}