body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

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

.converter-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
}

.converter-box {
    flex: 1;
    min-width: 300px;
    background-color: #f9f9f9;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

input, select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

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

.result {
    margin-top: 20px;
    padding: 15px;
    background-color: #e8f5e9;
    border-radius: 4px;
    font-weight: 500;
}

.today-info {
    text-align: center;
    margin: 20px 0;
    padding: 10px;
    background-color: #e3f2fd;
    border-radius: 4px;
}

.calendar {
    margin-top: 30px;
}

.calendar h3 {
    margin-bottom: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

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

th {
    background-color: #f2f2f2;
}

.current-day {
    background-color: #4CAF50;
    color: white;
    font-weight: bold;
}

.other-month {
    color: #aaa;
}