* {
    box-sizing: border-box;
}

body {
    background-color: #f8f8f8;
    font-family: Arial, sans-serif;
    margin: 0;
}

.simon-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.title {
    font-size: 48px;
    margin-bottom: 30px;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.board {
    display: grid;
    grid-template-columns: repeat(2, 100px);
    grid-template-rows: repeat(2, 100px);
    gap: 10px;
    margin-bottom: 30px;
}

.pad {
    cursor: pointer;
    border-radius: 50%;
    width: 100%;
    height: 100%;
    opacity: 0.6;
    transition: opacity 0.2s ease-in-out;
}

.pad.green {
    background-color: green;
}

.pad.red {
    background-color: red;
}

.pad.yellow {
    background-color: yellow;
}

.pad.blue {
    background-color: blue;
}

.pad.active {
    opacity: 1;
}

.controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

button {
    font-size: 24px;
    padding: 10px 20px;
    border-radius: 5px;
    border: none;
    background-color: #333;
    color: #fff;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out;
}

button:hover {
    background-color: #555;
}

.difficulty {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.level-display {
    font-size: 32px;
}

#strict.active {
    background-color: red;
}