/* ============================================
   Pixia - AI Object Remover studio
   (remove-object.html)
   Complements css/ai-tool.css (.at-* primitives)
   Scope: body.at-remove-object
   ============================================ */

body.at-remove-object {
  --ro-accent: #6366f1;
  --ro-accent-2: #8b5cf6;
  --ro-shadow: 0 16px 34px -18px rgba(99, 102, 241, .7);
  --ro-ease: var(--at-ease, cubic-bezier(.22, .61, .36, 1));
}

body.at-remove-object [hidden] { display: none !important; }

/* Indigo accent replaces the shared identity. */
body.at-remove-object .at-kicker {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #ffffff;
}
body.at-remove-object .at-btn {
  color: #ffffff;
  box-shadow: var(--ro-shadow);
}
body.at-remove-object .at-btn-alt {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  box-shadow: none;
}
body.at-remove-object .at-progress-fill { background: linear-gradient(90deg, #6366f1, #8b5cf6); }
body.at-remove-object .at-drop-icon {
  background: linear-gradient(135deg, rgba(99, 102, 241, .18), rgba(139, 92, 246, .18));
  color: #4f46e5;
}

/* ---------- Layout ---------- */
body.at-remove-object .ro-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 22px;
  align-items: start;
}
.ro-main {
  min-width: 0;
  position: sticky;
  inset-block-start: 84px;
  align-self: start;
}
.ro-side {
  min-width: 0;
  display: grid;
  gap: 16px;
}
@media (max-width: 1060px) {
  body.at-remove-object .ro-layout { grid-template-columns: 1fr; }
  .ro-main { position: static; }
}

body.at-remove-object .at-panel { min-height: 0; min-width: 0; }

.ro-panel h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-block-end: 4px;
}

/* ---------- Source drop ---------- */
.ro-source { display: flex; flex-direction: column; gap: 12px; }
.ro-drop {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  padding: 30px 20px;
  border: 1.6px dashed var(--glass-border-hover);
  border-radius: var(--at-radius-lg);
  background: var(--glass-bg);
  cursor: pointer;
  transition: border-color .2s var(--ro-ease), background .2s var(--ro-ease), transform .2s var(--ro-ease);
}
.ro-drop:hover { border-color: var(--ro-accent); }
.ro-drop:focus-visible { outline: 2px solid var(--ro-accent); outline-offset: 3px; }
.ro-drop.is-disabled { opacity: .55; pointer-events: none; }
.ro-drop.is-over {
  border-color: var(--ro-accent);
  background: color-mix(in srgb, var(--ro-accent) 10%, var(--glass-bg));
  transform: scale(1.006);
}
.ro-drop input { display: none; }
.ro-drop-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 16px;
  background: color-mix(in srgb, var(--ro-accent) 16%, transparent);
  color: var(--ro-accent);
  margin-block-end: 2px;
}
.ro-drop-icon svg { width: 26px; height: 26px; }
.ro-drop-title { font-family: var(--font-display); font-size: 1.02rem; font-weight: 600; color: var(--text-primary); }
.ro-drop-sub { font-size: 12.5px; color: var(--text-tertiary); line-height: 1.55; }
.ro-drop-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-block-start: 4px; }
.ro-drop-meta span {
  font-size: 11px; font-weight: 600;
  color: var(--text-tertiary);
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 3px 10px;
}

/* ---------- Stage / preview ---------- */
.ro-stage-panel { display: flex; flex-direction: column; }
.ro-stage-head {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin-block-end: 12px;
}
.ro-stage-head h2 { margin: 0; }

.ro-view {
  justify-self: center;
  display: inline-flex;
  gap: 3px;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
}
.ro-view-btn {
  min-width: 54px; height: 28px; padding: 0 12px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: 999px; background: transparent;
  color: var(--text-secondary); font: 600 12px/1 var(--font-primary); cursor: pointer;
  transition: color .2s var(--ro-ease), background .2s var(--ro-ease);
}
.ro-view-btn:hover { color: var(--text-primary); }
.ro-view-btn.is-active { background: var(--bg-card-hover); color: var(--text-primary); }

.ro-zoom {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
}
.ro-zoom-btn {
  min-width: 30px; height: 28px; padding: 0 10px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 0; border-radius: 999px; background: transparent;
  color: var(--text-secondary); font: 600 12px/1 var(--font-primary); cursor: pointer;
  transition: color .2s var(--ro-ease), background .2s var(--ro-ease);
}
.ro-zoom-btn:hover { color: var(--text-primary); }
.ro-zoom-btn svg { width: 15px; height: 15px; }
.ro-zoom-level {
  min-width: 44px; padding-inline: 6px;
  text-align: center;
  font: 600 11.5px/1 var(--font-primary);
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

.ro-stage-shell {
  position: relative;
  flex: 1;
  min-height: 420px;
  max-height: min(770px, calc(100vh - 240px));
  display: flex;
  flex-direction: column;
}
.ro-stage {
  position: relative;
  flex: 1;
  min-height: 0;
  display: flex;
  /* Centering is done by `margin: auto` on the wrap instead of justify/align,
     so a zoomed image that overflows stays scrollable to its far edges. */
  padding: 16px;
  border-radius: var(--at-radius-lg);
  border: 1px solid var(--glass-border);
  /* Checkerboard so transparent pixels (if any) read clearly. */
  background-image: repeating-conic-gradient(rgba(128, 128, 128, .16) 0% 25%, transparent 0% 50%);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
  overflow: auto;
  overscroll-behavior: contain;
}
.ro-stage-empty {
  display: grid;
  place-items: center;
  gap: 8px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13.5px;
  line-height: 1.6;
  max-width: 34ch;
  margin: auto;
}
.ro-stage-empty svg { width: 44px; height: 44px; color: var(--text-muted); }
.ro-stage-empty strong { font-size: 15px; color: var(--text-secondary); font-weight: 600; }

/* The interactive surface: img + mask overlay + a live brush cursor. */
.ro-canvas-wrap {
  position: relative;
  margin: auto;
  line-height: 0;
  touch-action: none;
  /* Don't let the flex stage shrink the zoomed image back down; let it
     overflow and scroll instead. */
  flex: none;
  /* Clip the brush cursor so its circle can't overhang the image and create
     phantom scrollbars on the scrollable stage. */
  overflow: hidden;
  border-radius: 8px;
}
.ro-canvas-wrap img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  user-select: none;
  -webkit-user-drag: none;
  cursor: crosshair;
}
.ro-canvas-wrap canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  border-radius: 8px;
  transition: opacity .2s var(--ro-ease);
}
/* In result view the mask overlay is hidden and the pointer stops selecting. */
.ro-canvas-wrap.is-result img { cursor: default; }
.ro-canvas-wrap.is-result canvas { opacity: 0; }

.ro-brush-cursor {
  position: absolute;
  border-radius: 50%;
  border: 1.6px solid rgba(255, 255, 255, .95);
  box-shadow: 0 0 0 1.4px rgba(0, 0, 0, .55), inset 0 0 0 1.4px rgba(0, 0, 0, .45);
  transform: translate(-50%, -50%);
  pointer-events: none;
  display: none;
  z-index: 3;
}
.ro-brush-cursor.is-eraser {
  border-style: dashed;
  border-color: rgba(255, 255, 255, .95);
}

/* Busy: the scrim lives inside the zoomed canvas so it tracks the image at
   every zoom level; the spinner stays pinned over the stage viewport. */
.ro-busy-scrim {
  position: absolute;
  inset: 0;
  z-index: 4;
  border-radius: 8px;
  background: color-mix(in srgb, var(--bg-primary) 68%, transparent);
  backdrop-filter: blur(3px);
}
.ro-busy {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border-radius: var(--at-radius-lg);
  pointer-events: none;
  z-index: 4;
}
.ro-spinner {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 3px solid color-mix(in srgb, var(--ro-accent) 24%, transparent);
  border-top-color: var(--ro-accent);
  animation: ro-spin .8s linear infinite;
}
@keyframes ro-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .ro-spinner { animation-duration: 1.8s; }
}
.ro-busy-msg { font-size: 13px; font-weight: 600; color: var(--text-secondary); }

/* ---------- Info strip ---------- */
.ro-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-block-start: 12px;
}
.ro-info-cell {
  display: grid;
  gap: 2px;
  padding: 9px 12px;
  border-radius: var(--at-radius-md);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
}
.ro-info-k { font-size: 11px; font-weight: 600; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: .03em; }
.ro-info-v { font-size: 13px; font-weight: 600; color: var(--text-primary); font-variant-numeric: tabular-nums; }

/* ---------- Settings ---------- */
.ro-field { margin-block-start: 16px; }
.ro-field:first-of-type { margin-block-start: 0; }
.ro-legend {
  display: block;
  font-size: 12.5px; font-weight: 600; letter-spacing: .02em;
  color: var(--text-secondary); margin-block-end: 9px;
}
.ro-hint { margin: 8px 0 0; font-size: 11.5px; line-height: 1.5; color: var(--text-muted); }
.ro-keys { text-align: center; margin-block-start: 12px; }

.ro-mode-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
}
.ro-actions-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.ro-mini-btn { width: 100%; justify-content: center; }

.ro-bg-opt {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  gap: 7px;
  padding: 10px 8px;
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  background: var(--glass-bg);
  color: var(--text-secondary);
  font: 600 12.5px/1.2 var(--font-primary);
  text-align: center;
  cursor: pointer;
  transition: color .2s var(--ro-ease), border-color .2s var(--ro-ease), background .2s var(--ro-ease);
}
.ro-bg-opt:hover { color: var(--text-primary); border-color: var(--glass-border-hover); }
.ro-bg-opt input { position: absolute; opacity: 0; pointer-events: none; }
.ro-bg-opt svg { width: 16px; height: 16px; }
.ro-bg-opt:has(input:checked) {
  color: var(--ro-accent);
  border-color: var(--ro-accent);
  background: color-mix(in srgb, var(--ro-accent) 10%, var(--glass-bg));
}
.ro-bg-opt:has(input:disabled) { opacity: .55; cursor: not-allowed; }

/* Model picker (run panel) */
.ro-engine-field { margin-block-start: 0; margin-block-end: 14px; }
.ro-engine-opt {
  flex-direction: column;
  gap: 2px;
  padding: 9px 8px;
  line-height: 1.25;
}
.ro-engine-opt strong { font-size: 12.5px; font-weight: 700; }
.ro-engine-opt small { font-size: 10.5px; font-weight: 500; opacity: .72; }
.ro-engine-hint { min-height: 34px; }
.ro-engine-hint.is-lama { color: var(--ro-accent); }

.ro-range { width: 100%; accent-color: var(--ro-accent); }
.ro-range-row { display: flex; align-items: center; gap: 12px; }
.ro-range-out {
  min-width: 34px; text-align: end;
  font-size: 13px; color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

/* Coverage meter: how much of the image is currently selected. */
.ro-coverage {
  height: 8px;
  border-radius: 999px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  overflow: hidden;
}
.ro-coverage-fill {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  transition: width .18s var(--ro-ease);
}

/* ---------- Run / progress ---------- */
.ro-run-actions { display: grid; gap: 10px; }
.ro-run-btn { width: 100%; justify-content: center; }
.ro-cancel {
  border: 0; background: none;
  color: var(--text-muted);
  font: 600 13px/1 var(--font-primary);
  cursor: pointer; padding: 6px;
  border-radius: 8px;
  transition: color .2s var(--ro-ease), background .2s var(--ro-ease);
}
.ro-cancel:hover { color: #ef4444; background: color-mix(in srgb, #ef4444 10%, transparent); }

.ro-progress { display: grid; gap: 6px; }
.ro-progress-track {
  display: block;
  height: 6px;
  border-radius: 999px;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  overflow: hidden;
}
.ro-progress-fill {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  transition: width .2s var(--ro-ease);
}
.ro-progress-msg { font-size: 11.5px; color: var(--text-muted); text-align: center; }

/* ---------- RTL ---------- */
[dir="rtl"] .ro-zoom-level { direction: ltr; }

/* ---------- Small screens ---------- */
@media (max-width: 560px) {
  .ro-stage-shell { min-height: 320px; }
  .ro-info { grid-template-columns: 1fr; }
  .ro-stage-head { grid-template-columns: 1fr; justify-items: center; }
  .ro-zoom { justify-self: center; }
}