body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 0;
    text-align: center;
}

h1 {
    color: #2c3e50;
}

form {
    background: #ffffff;
    padding: 20px;
    margin: 50px auto;
    width: 300px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

input {
    width: 100%;
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: #2c3e50;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #34495e;
}

.loading-spinner {
    border: 6px solid #f3f3f3;
    border-top: 6px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
    display: none;
}

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

.result-container {
    max-width: 800px;
    margin: 50px auto;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    text-align: center;
}

.result-container h1 {
    color: #2c3e50;
    margin-bottom: 20px;
}

.result-container p {
    font-size: 18px;
    margin-bottom: 20px;
    color: #34495e;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th, table td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: right;
}

table th {
    background-color: #2c3e50;
    color: white;
}

table tr:nth-child(even) {
    background-color: #f9f9f9;
}

table tr:hover {
    background-color: #f1f1f1;
}

.back-button {
    display: inline-block;
    margin-top: 20px;
    background-color: #2c3e50;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
}

.back-button:hover {
    background-color: #34495e;
}