* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
    background: #0b0f17;
    color: #e5e7eb;
    font-family:
        Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
        sans-serif;
}

#app {
    min-height: 100%;
    padding: 24px;
}

.stage {
    display: grid;
    grid-template-columns: 800px 260px minmax(220px, 300px);
    gap: 18px;
    align-items: start;
}

.canvas-panel,
.readout {
    border: 1px solid #263142;
    border-radius: 8px;
    background: #111827;
    box-shadow: 0 18px 50px rgb(0 0 0 / 24%);
}

.panel-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    height: 44px;
    padding: 0 14px;
    border-bottom: 1px solid #263142;
}

h1,
h2 {
    margin: 0;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0;
}

.panel-header span {
    color: #94a3b8;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 12px;
}

#viewportCanvas,
#worldCanvas {
    line-height: 0;
}

canvas {
    display: block;
}

.readout {
    min-height: 644px;
    padding: 14px;
}

.readout h2 {
    margin-bottom: 12px;
}

#platform-readout {
    display: grid;
    gap: 10px;
}

#platform-readout article {
    display: grid;
    gap: 4px;
    padding: 10px;
    border: 1px solid #263142;
    border-radius: 6px;
    background: #0f172a;
}

#platform-readout strong {
    color: #f8fafc;
    font-size: 13px;
}

#platform-readout span,
#platform-readout p {
    margin: 0;
    color: #cbd5e1;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 12px;
}

@media (max-width: 1440px) {
    body {
        overflow: auto;
    }

    .stage {
        grid-template-columns: 800px 260px;
    }

    .readout {
        grid-column: 1 / -1;
        min-height: 0;
    }
}