body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    background: #f0f2f5;
    color: #333;
}

h2 {
    text-align: center;
    margin-bottom: 20px;
}

.kmap-container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.cell {
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s, transform 0.2s;
}

.cell:hover {
    background-color: #e0f7fa;
    transform: scale(1.03);
}

.controls {
    margin: 20px 0;
    text-align: center;
}

button {
    padding: 10px 20px;
    margin: 0 5px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background: #009879;
    color: #fff;
    transition: background 0.3s;
}

button:hover {
    background: #007f66;
}

.result {
    padding: 15px;
    background: #fff;
    border-radius: 5px;
    border: 1px solid #ddd;
    margin-top: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.labels {
    font-weight: bold;
    text-align: center;
    margin-bottom: 10px;
}