.sprite-workspace { grid-template-columns: minmax(260px, 340px) minmax(0, 1fr); }
.sprite-options { margin: 0; min-width: 0; }
.sprite-options legend { padding-inline: 8px; font-family: var(--font-heading); }
.sprite-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sprite-tool .tool-field input { width: 100%; min-width: 0; min-height: 42px; padding: 8px 12px; border: 1px solid var(--border-medium); border-radius: 4px; background: var(--bg-raised); color: var(--text-primary); font: inherit; }
.sprite-tool :focus-visible { outline: 2px solid #90c5ef; outline-offset: 3px; }
.sprite-tool .upload-tile:focus-within { outline: 2px solid #90c5ef; outline-offset: 3px; }
.sprite-tool .upload-tile { cursor: pointer; }
.sprite-tool .upload-tile__meta, .sprite-hint { color: #a3a3a3; }
.sprite-tool .tool-status, .sprite-tool .tool-range output { color: #aaa; }
.sprite-tool .tool-status.is-error { color: #f6a1a1; }
.sprite-previews { min-width: 0; display: flex; flex-direction: column; gap: 16px; }
.sprite-panel-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.sprite-panel-heading h2 { font-size: 1.125rem; }
.sprite-panel-heading span { color: #aaa; font-size: .875rem; font-variant-numeric: tabular-nums; }
.sprite-stage, .sprite-sheet-stage { border: 1px solid var(--border-medium); border-radius: 8px; background-color: #222; background-image: conic-gradient(#2b2b2b 25%, #222 0 50%, #2b2b2b 0 75%, #222 0); background-size: 24px 24px; }
.sprite-stage { height: 340px; display: grid; place-items: center; overflow: auto; padding: 20px; }
.sprite-stage canvas { display: block; flex-shrink: 0; }
.sprite-stage canvas[hidden], #sheet-display[hidden] { display: none; }
.sprite-stage p, .sprite-sheet-stage > p { color: #bbb; text-align: center; padding: 32px; }
.sprite-stage[data-background="dark"] { background: #101010; }
.sprite-stage[data-background="light"] { background: #eee; }
.sprite-transport { display: flex; align-items: center; gap: 8px; }
.sprite-transport .btn { padding: 10px 16px; min-height: 44px; }
.sprite-scrubber { flex: 1; min-width: 30px; }
.sprite-scrubber input { width: 100%; accent-color: #90c5ef; }
.sprite-view-options { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; margin-bottom: 12px; }
.sprite-sheet-stage { min-height: 160px; padding: 12px; }
#sheet-display { position: relative; width: fit-content; max-width: 100%; margin: auto; }
#sheet-image { display: block; max-width: 100%; max-height: 480px; width: auto; height: auto; }
#grid-canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; }
.sprite-hint { font-size: .875rem; max-width: 78ch; }
.sprite-tool button:disabled { opacity: .45; cursor: not-allowed; }
@media (max-width: 900px) { .sprite-workspace { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .sprite-workspace { padding: 16px; } .sprite-stage { height: 280px; } .sprite-transport .btn { padding-inline: 12px; } }