* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
}

h2 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.input-group {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

input, select {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

input {
    flex-grow: 1;
}

select {
    margin-left: 10px;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
    width: 100%;
}

button:hover {
    background-color: #2980b9;
}

.result {
    margin-top: 15px;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 4px;
    border-left: 4px solid #3498db;
    min-height: 40px;
}

.current-time {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.current-time span {
    font-weight: bold;
    color: #3498db;
}

footer {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    color: #777;
}

footer a {
    color: #3498db;
    text-decoration: none;
}

@media (max-width: 600px) {
    .input-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    select {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
    }
    
    input {
        width: 100%;
    }
}