/* ── Mask Editor CSS ─────────────────────────────────────────────────────── */
#mask-editor-modal {
  --me-accent: #4a9eff;
  --me-active-tool: #4a9eff;
  --me-danger: #ff3b30;

  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.75);
  font-family: inherit;
  color: var(--text, #e0e0e0);
}
#mask-editor-modal.visible { display: flex; }

#mask-editor-container {
  display: flex;
  flex-direction: column;
  width: 95vw;
  height: 95vh;
  max-width: 95vw;
  max-height: 95vh;
  background: var(--bg, #1a1a1a);
  border: 1px solid var(--border, #3a3a3a);
  border-radius: 8px;
  overflow: hidden;
}

/* ── Top Bar ── */
#mask-topbar {
  display: flex;
  align-items: center;
  height: 44px;
  min-height: 44px;
  padding: 0 10px;
  background: var(--surface, #242424);
  border-bottom: 1px solid var(--border, #3a3a3a);
  gap: 6px;
}
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 4px; }
.topbar-center { flex: 1; text-align: center; font-weight: 600; font-size: 14px; opacity: 0.7; }
.topbar-right { margin-left: auto; }

#mask-topbar button {
  background: transparent;
  border: 1px solid var(--border, #3a3a3a);
  color: var(--text, #e0e0e0);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  white-space: nowrap;
}
#mask-topbar button:hover { background: var(--surface2, #333); }
#mask-topbar button.primary {
  background: var(--me-accent);
  color: #fff;
  border-color: var(--me-accent);
  font-weight: 600;
}
#mask-topbar button.primary:hover { opacity: 0.9; }
#mask-topbar button.danger-btn { color: var(--me-danger); }

/* ── Body layout ── */
#mask-editor-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Left Toolbar ── */
#mask-toolbar {
  display: flex;
  flex-direction: column;
  width: 48px;
  min-width: 48px;
  background: var(--surface, #242424);
  border-right: 1px solid var(--border, #3a3a3a);
  padding: 6px 0;
  align-items: center;
  gap: 2px;
}
.tool-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-size: 18px;
  color: var(--text, #e0e0e0);
  padding: 0;
}
.tool-btn:hover { background: var(--surface2, #333); }
.tool-btn.active {
  background: var(--me-active-tool);
  color: #fff;
  border-color: var(--me-active-tool);
}
.toolbar-divider {
  width: 30px;
  border: none;
  border-top: 1px solid var(--border, #3a3a3a);
  margin: 4px 0;
}

/* ── Viewport ── */
#mask-viewport {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: #111;
  cursor: crosshair;
}
#mask-viewport.panning { cursor: grab; }
#mask-viewport.panning.grabbing { cursor: grabbing; }

#canvas-stage {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
}
#canvas-stage canvas {
  position: absolute;
  top: 0;
  left: 0;
  image-rendering: auto;
}

/* ── Options Panel ── */
#mask-options-panel {
  width: 220px;
  min-width: 220px;
  background: var(--surface, #242424);
  border-left: 1px solid var(--border, #3a3a3a);
  padding: 12px;
  overflow-y: auto;
  font-size: 12px;
}
#mask-options-panel .opt-group {
  margin-bottom: 12px;
}
#mask-options-panel .opt-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
  font-size: 11px;
  color: var(--muted, #aaa);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
#mask-options-panel input[type="range"] {
  width: 100%;
  margin: 2px 0;
  accent-color: var(--me-accent);
}
#mask-options-panel input[type="number"] {
  width: 52px;
  background: var(--bg, #1a1a1a);
  border: 1px solid var(--border, #3a3a3a);
  color: var(--text, #e0e0e0);
  border-radius: 3px;
  padding: 2px 4px;
  font-size: 11px;
  text-align: right;
}
#mask-options-panel select {
  width: 100%;
  background: var(--bg, #1a1a1a);
  border: 1px solid var(--border, #3a3a3a);
  color: var(--text, #e0e0e0);
  border-radius: 3px;
  padding: 3px 4px;
  font-size: 11px;
}
#mask-options-panel .shape-btns {
  display: flex;
  gap: 4px;
}
#mask-options-panel .shape-btn {
  flex: 1;
  padding: 4px;
  background: var(--bg, #1a1a1a);
  border: 1px solid var(--border, #3a3a3a);
  color: var(--text, #e0e0e0);
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
  text-align: center;
}
#mask-options-panel .shape-btn.active {
  background: var(--me-accent);
  color: #fff;
  border-color: var(--me-accent);
}
#mask-options-panel .mode-btns {
  display: flex;
  gap: 6px;
  margin-top: 4px;
}
#mask-options-panel label.mode-label {
  display: flex;
  align-items: center;
  gap: 3px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text, #e0e0e0);
}
.opt-section-header {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--muted, #888);
  border-top: 1px solid var(--border, #3a3a3a);
  padding-top: 8px;
  margin-top: 8px;
  margin-bottom: 8px;
}
.opt-panel { display: none; }
.opt-panel.visible { display: block; }
#mask-options-panel .checkbox-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 4px 0;
  font-size: 12px;
  cursor: pointer;
}
#mask-options-panel .checkbox-row input[type="checkbox"] {
  accent-color: var(--me-accent);
}

/* ── Status Bar ── */
#mask-statusbar {
  display: flex;
  align-items: center;
  height: 24px;
  min-height: 24px;
  padding: 0 10px;
  background: var(--surface, #242424);
  border-top: 1px solid var(--border, #3a3a3a);
  font-size: 11px;
  color: var(--muted, #aaa);
  gap: 16px;
}

/* ── Brush cursor preview ── */
#brush-cursor {
  position: fixed;
  pointer-events: none;
  border: 1.5px solid rgba(255,255,255,0.7);
  border-radius: 50%;
  z-index: 2001;
  display: none;
}