body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f0f2f5;
}

.container {
    background-color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

h1 {
    text-align: center;
    color: #1a73e8;
    margin-bottom: 1.5rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: #5f6368;
    font-weight: 500;
}

input[type="date"] {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #dadce0;
    border-radius: 5px;
    font-size: 1rem;
}

button {
    width: 100%;
    padding: 1rem;
    background-color: #1a73e8;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #1557b0;
}

#result {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 5px;
    display: none;
}

#result.success {
    background-color: #e8f0fe;
    color: #1967d2;
    border: 1px solid #1967d2;
}

#result.error {
    background-color: #fce8e6;
    color: #c5221f;
    border: 1px solid #c5221f;
}