body {
    margin: 0;
    padding: 0;
    background-color: #1e1e1e; /* dark grey */
    font-family: Arial, sans-serif;
    color: #ffffff;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    text-align: center;
    width: 90%;
    max-width: 500px;
    padding: 1rem;
}

/* REMOVE max-width on mobile */
@media (max-width: 500px) {
    .container {
        max-width: none;
    }
}

.logo {
    width: 100px;
    margin-bottom: 1rem;
    margin-top: 25px;
}

h1 {
    margin-bottom: 2rem;
    font-size: 2rem;
    color: #ffffff;
}

#image-container img {
    max-width: 100%;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
}

input[type="text"] {
    width: 100%;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
}

#pay_button {
    padding: 1rem 2rem;
    font-size: 1.2rem;
    background-color: #7c3aed; /* purple button */
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#pay_button:hover {
    background-color: #6d28d9;
}

.result-text {
    margin-top: 1rem;
    font-size: 1rem;
    color: #ff6b6b;
}