body {
    background: linear-gradient(135deg, #0D1B2A, #1B263B);
    color: #FFFFFF;
    text-align: center;
    padding: 40px 20px;
    font-family: "Poppins", Arial, sans-serif;
}

h1 {
    font-size: 36px;
    font-weight: 700;
    color: #00FFAA;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

p {
    font-size: 18px;
    color: #EEEEEE;
}

.container {
    background: rgba(255, 255, 255, 0.05);
    padding: 35px;
    margin-top: 40px;
    border-radius: 18px;
    backdrop-filter: blur(5px);
    display: inline-block;
    box-shadow: 0px 0px 18px rgba(0,0,0,0.4);
}

.qr img {
    width: 300px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0px 0px 12px rgba(0,255,170,0.4);
}

.btn {
    display: inline-block;
    margin-top: 30px;
    background: #00FFAA;
    color: #0D1B2A;
    padding: 14px 28px;
    font-size: 20px;
    font-weight: bold;
    border-radius: 12px;
    text-decoration: none;
    transition: 0.2s ease-in-out;
}

.btn:hover {
    background: #00DDA0;
    transform: scale(1.05);
}

footer {
    margin-top: 50px;
    font-size: 14px;
    opacity: 0.7;
}