/* ============================================
   Pixelius Viewer — Comparison Slider, Zoom
   ============================================ */

/* Workspace sections */
.workspace-section {
  display: none;
  width: 100%;
  height: 100%;
}

.workspace-section.active {
  display: flex;
}

/* ============================================
   Comparison Viewer
   ============================================ */

.viewer-container {
  position: relative;
  flex: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  z-index: 0;
}

/* When viewer-container is column layout (result viewer), stretch children to full width */
.viewer-container[style*="column"] {
  align-items: stretch;
  justify-content: flex-start;
}

.viewer-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: col-resize;
  border-radius: 0.75rem;
}

.viewer-wrapper.is-panning {
  cursor: grabbing;
}

.viewer-wrapper.is-zoomed {
  cursor: grab;
}

.viewer-wrapper img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

.viewer-before {
  z-index: 1;
  clip-path: inset(0 50% 0 0);
}

.viewer-after {
  z-index: 0;
}

/* Slider line — gradient glow (Gigapixel-style) */
.viewer-slider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  z-index: 40;
  background: linear-gradient(to bottom,
    transparent 5%,
    var(--accent) 30%,
    var(--accent) 70%,
    transparent 95%);
  transform: translateX(-50%);
  pointer-events: none;
}

/* Left glow — soft accent bleed with feathered edge */
.viewer-slider::before {
  content: '';
  position: absolute;
  top: 0;
  left: calc(-30px * var(--inv-zoom, 1));
  width: calc(60px * var(--inv-zoom, 1));
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

/* Right subtle shadow with feathered edge */
.viewer-slider::after {
  content: '';
  position: absolute;
  top: 0;
  left: calc(-15px * var(--inv-zoom, 1));
  width: calc(30px * var(--inv-zoom, 1));
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

/* Handle — small white rounded square with grip dots */
.viewer-slider-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1.25rem;
  height: 1.25rem;
  background: white;
  border-radius: 0.375rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: col-resize;
  pointer-events: auto;
  z-index: 50;
}

.viewer-slider-handle svg {
  width: 6px;
  height: 10px;
  color: #999;
  flex-shrink: 0;
}

/* Viewer labels — top corners (Gigapixel-style) */
.viewer-label {
  position: absolute;
  top: 0.75rem;
  padding: 0.25rem 0.625rem;
  background: rgba(0, 0, 0, 0.85);
  color: white;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: 0.375rem;
  z-index: 25;
  user-select: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  letter-spacing: 0.02em;
}

.viewer-label-before {
  left: 0.75rem;
  transform-origin: top left;
}

.viewer-label-after {
  right: 0.75rem;
  transform-origin: top right;
}

/* Viewer controls */
.viewer-controls {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.25rem;
  box-shadow: var(--shadow-md);
  z-index: 20;
}

.viewer-controls .btn-icon {
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: 0.375rem;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.viewer-controls .btn-icon:hover {
  background: var(--queue-item-hover);
  color: var(--text-primary);
}

.viewer-controls .btn-icon svg {
  width: 1rem;
  height: 1rem;
}

.viewer-zoom-text {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  min-width: 2.5rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  font-variant-numeric: tabular-nums;
}

/* ============================================
   Zoom Modal (Fullscreen)
   ============================================ */

.zoom-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
}

.zoom-modal.show {
  display: flex;
}

.zoom-modal img {
  max-width: 95vw;
  max-height: 95vh;
  object-fit: contain;
  cursor: zoom-in;
}

.zoom-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
}

.zoom-modal-close:hover {
  background: rgba(255, 255, 255, 0.25);
}

.zoom-modal-close svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ============================================
   Variants Grid (Deblur)
   ============================================ */

.variants-grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 16px;
}

.variant-card {
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s ease;
}

.variant-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.variant-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
}

.variant-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.variant-card-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.variant-card-download {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  background: none;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.variant-card-download:hover {
  background: var(--queue-item-hover);
  color: var(--text-primary);
}

.variant-card-body {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
}

.variant-card-body:hover {
  opacity: 0.85;
}

.variant-card-body img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.variant-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: var(--text-muted);
  font-size: 0.75rem;
  gap: 0.5rem;
}

/* ============================================
   Viewer Info Bar (above/below viewer)
   ============================================ */

.viewer-info-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--divider);
  font-size: 0.75rem;
  min-height: 2.25rem;
  width: 100%;
  align-self: stretch;
  position: relative;
  z-index: 50;
}

.viewer-filename {
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-actions {
  display: flex;
  gap: 0.25rem;
}