body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

.container {
    width: 60%;
    margin: 50px auto;
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

label {
    font-weight: bold;
}

input, select, textarea {
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    box-sizing: border-box;
}

button {
    padding: 10px;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background-color: #45a049;
}

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

/* Loading and error feedback styles */
.spinner {
    display: none;
    width: 30px;
    height: 30px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #4CAF50;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 10px auto;
}

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

.error-feedback {
    color: #d32f2f;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

.processing-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}