body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    padding: 20px;
    color: #333;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

h1 {
    color: #007bff;
    margin-bottom: 5px;
}

form {
    margin: 25px 0;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

label {
    display: block;
    margin-top: 10px;
    font-weight: bold;
}

input, button {
    padding: 10px;
    margin-top: 5px;
    width: 100%;
    max-width: 400px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
    font-weight: bold;
    margin-top: 20px;
    transition: background-color 0.3s;
}

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

.result-box {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    margin-top: 20px;
}

.location-time {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.location-time:last-of-type {
    border-bottom: none;
}

.time {
    font-size: 1.2em;
    color: #007bff;
}

.time-diff {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 4px;
    margin-top: 15px;
}

.loading {
    color: #666;
    font-style: italic;
}

.error {
    color: #d9534f;
    background: #f9f2f2;
    padding: 10px;
    border-radius: 4px;
}

h3 {
    color: #555;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
    margin-top: 0;
}

h4 {
    margin-bottom: 5px;
    color: #333;
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    
    form, .result-box {
        padding: 15px;
    }
}