body {
    font-family: Arial, sans-serif;
    display: flex;
    align-items: flex-start;
    font-size: 12px;
    margin: 0;
    background: #111;
    color: #ddd;
}

#gameWorld {
    border: 1px solid #333;
    background-color: #000;
    margin-right: 12px;
    flex-shrink: 0;
}

#controlPanel {
    display: flex;
    flex-direction: column;
    width: 260px;
    padding-top: 4px;
}

#frameRate {
    background: #222;
    border: 1px solid #444;
    text-align: center;
    padding: 4px;
    margin-bottom: 8px;
    font-size: 11px;
    color: #aaa;
}

#stats {
    background: #1a1a2e;
    border: 1px solid #03ecd3;
    padding: 8px;
    margin-bottom: 8px;
    font-size: 11px;
    line-height: 1.8;
}

#stats .label { color: #888; }
#stats .value { color: #03ecd3; font-weight: bold; }

#parameters {
    border: 1px solid #444;
    padding: 8px;
    background: #1a1a1a;
    margin-bottom: 8px;
}

#parameters h3 {
    margin: 0 0 8px 0;
    font-size: 12px;
    color: #03ecd3;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.param-row {
    margin-bottom: 6px;
}

.param-row label {
    display: block;
    color: #999;
    margin-bottom: 2px;
}

.param-row select,
.param-row input[type=number],
.param-row input[type=range] {
    width: 100%;
    box-sizing: border-box;
    background: #222;
    border: 1px solid #555;
    color: #eee;
    padding: 2px 4px;
    font-size: 11px;
}

.param-row input[type=checkbox] {
    margin-right: 6px;
}

button {
    width: 100%;
    padding: 6px;
    background: #03ecd3;
    color: #000;
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: bold;
    margin-top: 4px;
}

button:hover { background: #02c4af; }