* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

main {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

canvas {
    background-color: #000000;
    border: 1px solid #444;
    cursor: pointer;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 15px;
    background-color: #1f1f1f;
    border-bottom: 1px solid #444;
    width: 100%;
}

.title-container {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

h1 {
    font-size: 1.2em;
    margin: 0;
    color: #0099ff;
}

#status-container {
    font-size: 0.8em;
    color: #888;
    margin-left: 15px;
}

#controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

label {
    font-size: 0.9em;
    color: #aaa;
}

#cellSizeValue {
    font-weight: bold;
    color: #fff;
    min-width: 22px;
    display: inline-block;
    text-align: right;
    padding-right: 2px;
}

button, select {
    padding: 5px 12px;
    font-size: 0.9em;
    cursor: pointer;
    border: 1px solid #555;
    border-radius: 5px;
    background-color: #333;
    color: #eee;
    transition: background-color 0.3s, border-color 0.3s;
}

button:hover, select:hover {
    background-color: #444;
    border-color: #777;
}

#startPauseBtn { background-color: #007bff; border-color: #007bff; }
#startPauseBtn:hover { background-color: #0056b3; }
#clearBtn { background-color: #c82333; border-color: #c82333; }
#clearBtn:hover { background-color: #a81c2b; }


@media (max-width: 768px) {
    .top-bar {
        flex-direction: column;
        align-items: flex-start;
        padding: 10px;
    }

    #controls {
        width: 100%;
        justify-content: space-between;
        margin-top: 10px;
        gap: 8px;
    }

    button, select {
        padding: 8px 12px;
        font-size: 1em;
    }

    h1 {
        font-size: 1.4em;
    }
}