:root {
    --primary-color: #007bff;
    --background-color: #f4f7f6;
    --container-bg: #ffffff;
    --text-color: #333;
    --light-text-color: #666;
    --border-color: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px var(--shadow-color);
    width: 100%;
    max-width: 450px;
    text-align: center;
}

h1 {
    margin-bottom: 10px;
    font-weight: 600;
}

.subtitle {
    margin-bottom: 30px;
    color: var(--light-text-color);
}

form {
    display: flex;
    flex-direction: column;
}

label {
    text-align: left;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

input[type="text"] {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
}

button[type="submit"] {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 15px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

button[type="submit"]:hover {
    background-color: #0056b3;
}

button[type="submit"]:active {
    transform: scale(0.98);
}

#qrCodeContainer {
    margin-top: 20px;
    text-align: center;
}

#qrCodeContainer h3 {
    margin-bottom: 10px;
}

#qrCodeContainer p {
    color: var(--light-text-color);
    margin-bottom: 20px;
}

#qrCodeImage {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 8px;
}

/* QR Scanner Page Styles */
#reader {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 20px;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 15px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    width: 100%;
    margin-top: 10px;
}

button:hover {
    background-color: #0056b3;
}

button:active {
    transform: scale(0.98);
}

.button-danger {
    background-color: #dc3545;
}

.button-danger:hover {
    background-color: #c82333;
}

.manual-check {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.manual-check p {
    margin-bottom: 15px;
    color: var(--light-text-color);
}

.result-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    font-weight: 600;
}

.result-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.result-message.info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.result-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

#qrCodeImage {
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 8px;
}

/* Style for the download link */
a.button {
    display: inline-block;
    background-color: #28a745; /* Green color for download */
    color: white;
    text-decoration: none;
    padding: 15px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 20px;
    transition: background-color 0.3s, transform 0.2s;
}

a.button:hover {
    background-color: #218838;
}

a.button:active {
    transform: scale(0.98);
}

.result-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Style for disabled buttons */
button:disabled {
    background-color: #cccccc;
    color: #666666;
    cursor: not-allowed;
    transform: none; /* Prevent active scale effect */
}

button:disabled:hover {
    background-color: #cccccc; /* Keep the same color on hover */
}