.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    overflow: hidden;
    background: #1a1a2e;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    width: 100vw;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.toolbar {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.25rem;
    background: #12121a;
    border-bottom: 1px solid #1e1e2e;
    position: relative;
    z-index: 10;
    flex-shrink: 0;
}

.btn {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: #e8e8f0;
    padding: 0.45rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.btn:hover { background: rgba(255,255,255,0.12); }

.game-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #e67e22;
}

#gameCanvas {
    display: block;
    background: #2d5a1e;
    image-rendering: auto;
    flex: 1;
}