body {
    background-color: #0f172a;
    color: white;
    font-family: 'Segoe UI', system-ui, sans-serif;
    margin: 0;
    overflow: hidden;
    overscroll-behavior: none;
    touch-action: none;
    user-select: none;
}

#app {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100dvh;
    display: flex; flex-direction: column;
}

.top-bar {
    height: 50px; background: #1e293b; border-bottom: 1px solid #334155;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 15px; z-index: 50; flex-shrink: 0;
}

.canvas-area {
    flex-grow: 1; position: relative; background: #0f172a; overflow: hidden;
}

canvas { display: block; width: 100%; height: 100%; }
canvas.interactive { cursor: pointer; }

select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 1em;
    padding-right: 2rem;
}