body {
    margin: 0;
    padding: 0;
    background: linear-gradient(to bottom, #111111, #1a1a1a);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #f0f0f0;
    overflow: hidden;
    height: 100vh;
}

.container {
    text-align: center;
    position: relative;
    top: 30%;
    transform: translateY(-30%);
}

.logo {
    font-size: 3em;
    color: #7fff00;
    text-shadow: 0 0 20px #7fff00, 0 0 40px #6a0dad;
}

.tagline {
    font-size: 1.5em;
    margin: 20px 0;
    color: #ccc;
}

.buttons {
    margin-top: 30px;
}

.btn {
    display: inline-block;
    margin: 10px;
    padding: 12px 24px;
    font-size: 1em;
    color: white;
    background: #6a0dad;
    border-radius: 10px;
    text-decoration: none;
    transition: 0.3s;
    box-shadow: 0 0 15px #6a0dad;
}

.btn:hover {
    background: #7fff00;
    box-shadow: 0 0 25px #7fff00;
    color: black;
}

.secondary {
    background: transparent;
    border: 2px solid #7fff00;
}

.smoke {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://www.transparenttextures.com/patterns/smoke.png') repeat;
    opacity: 0.05;
    z-index: -1;
}