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

body {
    font-family: 'Arial', sans-serif;
    background: #f7f7f7;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    overflow: hidden;
}

.container {
    text-align: center;
    background-color: #fff;
    padding: 40px 50px;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    width: 350px;
    max-height: 600px;
    position: relative;
    transition: all 0.3s ease-in-out;
    animation: fadeIn 1s ease-out;
}

.container:hover {
    transform: scale(1.05);
}

h1 {
    margin-bottom: 20px;
    font-size: 28px;
    color: #333;
    font-family: 'Arial', sans-serif;
    letter-spacing: 1px;
}

input {
    width: 80%;
    padding: 12px 20px;
    font-size: 16px;
    margin-bottom: 25px;
    border: 2px solid #ccc;
    border-radius: 5px;
    background-color: #f4f4f4;
    color: #333;
    text-align: center;
    transition: transform 0.2s ease, border 0.2s ease;
}

input:focus {
    transform: scale(1.05);
    border-color: #5a9bd4;
    outline: none;
}

button {
    padding: 12px 20px;
    background-color: #5a9bd4;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    font-family: 'Arial', sans-serif;
    letter-spacing: 1px;
    transition: background-color 0.3s ease;
    margin-top: 15px;
}

button:hover {
    background-color: #4a8db3;
}

#qrCodeContainer {
    margin-top: 20px;
    display: none;
    animation: fadeInUp 1s ease-out;
}

.spinner {
    display: none;
    border: 4px solid #ddd;
    border-top: 4px solid #5a9bd4;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

#actionButtons {
    display: none; /* Hide buttons initially */
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
}

#actionButtons button {
    background-color: #fff;
    border: 2px solid #ddd;
    color: #333;
    font-size: 16px;
    width: 48%;
}

#actionButtons button:hover {
    background-color: #f4f4f4;
}