.rb { display: grid; gap: 4px; }
.rb .kv-msg { margin: 0 0 16px; }
.rb-work { display: grid; gap: 22px; }
@media (min-width: 900px) {
  .rb-work { grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; }
}

.rb-stage-col { display: grid; gap: 10px; align-content: start; min-width: 0; }
.rb-stage {
  position: relative; display: grid; place-items: center;
  height: clamp(320px, 62vh, 560px); border-radius: 12px; overflow: hidden;
  background: repeating-conic-gradient(var(--line) 0 25%, var(--surface) 0 50%) 0 0 / 18px 18px;
}
.rb-stage canvas { display: block; }
.rb-stage canvas.is-brushing { touch-action: none; cursor: none; }
.rb-progress {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(340px, calc(100% - 32px)); display: grid; gap: 10px; padding: 16px 18px;
  border-radius: 12px; background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25); text-align: center;
}
.rb-progress p { margin: 0; font-weight: 650; }
.rb-progress .rb-progress-help { font-weight: 400; color: var(--muted); font-size: 0.88rem; }
.rb-progress .rb-progress-help:empty { display: none; }
.rb-bar { height: 10px; border-radius: 5px; background: var(--sunken); overflow: hidden; }
.rb-bar span { display: block; height: 100%; width: 0; border-radius: 5px; background: var(--kit); transition: width 0.3s ease; }
.rb-bar.is-busy span { width: 35%; animation: rb-busy 1.2s ease-in-out infinite alternate; }
@keyframes rb-busy { from { transform: translateX(-10%); } to { transform: translateX(200%); } }

.rb-side { display: grid; gap: 20px; align-content: start; }
.rb-side .kv-chip { padding: 6px 12px; font-size: 0.93rem; }

/* Ajustes do recorte e pincel */
.rb-box { display: grid; gap: 14px; margin: 0; padding: 14px 16px; border: 1.5px solid var(--line); border-radius: 12px; min-width: 0; }
.rb-box legend { padding: 0 6px; margin-left: -6px; }
.rb-box:disabled { opacity: 0.5; }
.rb-box .kv-field { gap: 4px; }
.rb-range-label { display: flex; justify-content: space-between; gap: 8px; color: var(--ink); font-weight: 600; }
.rb-range-label output { font-variant-numeric: tabular-nums; color: var(--muted); }
.rb-small { font-size: 0.84rem; line-height: 1.35; }
.rb-brush { padding-top: 12px; border-top: 1px solid var(--line); }
.rb-brush .kv-seg span { padding: 6px 12px; font-size: 0.93rem; }
.rb-brush .kv-seg { margin-bottom: 6px; }
.rb-buttons { display: flex; flex-wrap: wrap; gap: 6px; }
.rb-color { position: relative; display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.rb-color input { width: 22px; height: 22px; padding: 0; border: 0; background: none; cursor: pointer; }
.rb-side .kv-btn--big { justify-self: stretch; }
.rb-side > .kv-btn--quiet { justify-self: start; }
.rb-done { margin: 0; color: var(--muted); font-weight: 600; }
.rb-done:empty { display: none; }