/* G0–G9 workbench presentation layer. Selectors are scoped to the workbench DOM. */
#tab-workbench {
  --wb-line: color-mix(in srgb, var(--accent-cyan) 17%, var(--border-subtle));
  --wb-tint: color-mix(in srgb, var(--accent-cyan) 7%, var(--bg-secondary));
  --wb-active: color-mix(in srgb, var(--accent-cyan) 13%, var(--bg-secondary));
  --wb-radius: 10px;
}

#tab-workbench .workbench-layout {
  align-items: flex-start;
  gap: clamp(1rem, 2vw, 1.5rem);
}

#tab-workbench .workbench-sidebar {
  flex-basis: 308px;
  width: 308px;
  min-width: 280px;
  top: 84px;
  max-height: calc(100vh - 100px);
  padding: 1.1rem 0.9rem;
  border-color: var(--wb-line);
  border-radius: var(--wb-radius);
  background: var(--bg-secondary);
  box-shadow: 0 5px 16px color-mix(in srgb, var(--bg-primary) 20%, transparent);
}

#tab-workbench .sidebar-header {
  padding: 0.2rem 0.25rem 1rem;
  margin-bottom: 0.8rem;
  border-bottom-color: var(--wb-line);
}

#tab-workbench .sidebar-title-block { gap: 0.6rem; }
#tab-workbench .sidebar-title-icon {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--wb-line);
  border-radius: 9px;
  background: var(--wb-tint);
  font-size: var(--fs-lg) !important;
}
#tab-workbench .sidebar-title-text {
  font-size: var(--fs-xl) !important;
  font-weight: 700;
  letter-spacing: 0.01em;
}
#tab-workbench .sidebar-toggle-all-btn {
  min-height: 30px;
  border-radius: 8px;
  font-size: var(--fs-md) !important;
}
#tab-workbench .sidebar-summary-badge {
  margin-top: 0.8rem;
  padding: 0.35rem 0.65rem;
  border-color: var(--wb-line);
  background: var(--wb-tint);
  color: var(--text-secondary);
  font-size: var(--fs-md) !important;
}
#tab-workbench #sidebar-completed-count {
  color: var(--accent-cyan);
  font-weight: 800;
  font-size: var(--fs-md) !important;
}

#tab-workbench .sidebar-stage-list { gap: 0.45rem; }
#tab-workbench .sidebar-stage-header {
  min-height: 44px;
  padding: 0.55rem 0.6rem;
  border-radius: 9px;
  font-size: var(--fs-lg) !important;
}
#tab-workbench .sidebar-stage-title {
  font-size: var(--fs-lg) !important;
  font-weight: 600;
}
#tab-workbench .sidebar-stage-sep {
  font-size: var(--fs-md) !important;
}
#tab-workbench .sidebar-stage-header:hover {
  background: var(--wb-tint);
  border-color: var(--wb-line);
}
#tab-workbench .sidebar-stage-item.active > .sidebar-stage-header {
  background: var(--wb-active);
  border-color: color-mix(in srgb, var(--accent-cyan) 44%, var(--border-subtle));
  color: var(--accent-cyan);
  box-shadow: inset 3px 0 0 var(--accent-cyan);
}
#tab-workbench .sidebar-stage-num,
#tab-workbench .sidebar-stage-code {
  font-family: var(--wt-font-sans) !important;
  font-size: var(--fs-sm) !important;
}
#tab-workbench .sidebar-stage-code {
  padding: 0.14rem 0.4rem;
  border-color: var(--wb-line);
  background: var(--bg-primary);
  color: var(--accent-cyan);
}
#tab-workbench .sidebar-toggle-btn {
  font-size: var(--fs-md) !important;
}
#tab-workbench .sidebar-sub-menu {
  gap: 0.3rem;
  padding: 0.35rem 0 0.45rem 1.05rem;
}
#tab-workbench .sidebar-sub-item {
  min-height: 36px;
  padding: 0.35rem 0.55rem;
  border-radius: 7px;
  font-size: var(--fs-lg) !important;
}
#tab-workbench .sub-item-icon,
#tab-workbench .sub-item-label {
  font-size: var(--fs-lg) !important;
}
#tab-workbench .sub-item-count,
#tab-workbench .sub-item-badge {
  font-size: var(--fs-sm) !important;
}
#tab-workbench .sidebar-sub-item.active,
#tab-workbench .sidebar-sub-item.is-active-sub {
  background: var(--wb-active);
  color: var(--accent-cyan);
}

#tab-workbench .workbench-main-content { gap: 0.25rem; }
#tab-workbench .workbench-main-content > .card {
  padding: clamp(1rem, 2vw, 1.65rem);
  border-color: var(--wb-line);
  border-radius: var(--wb-radius);
  background: var(--bg-secondary);
  box-shadow: 0 5px 18px color-mix(in srgb, var(--bg-primary) 18%, transparent);
}
#tab-workbench .stepper-header-bar {
  align-items: flex-start;
  margin-bottom: 1rem;
}
#tab-workbench .stepper-header-bar .card-title {
  font-size: var(--fs-xl) !important;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.015em;
}
#tab-workbench .stepper-header-bar .card-subtitle {
  max-width: 68ch;
  margin-top: 0.4rem;
  font-size: var(--fs-md) !important;
  line-height: 1.65;
}
#tab-workbench #run-full-pipeline-btn,
#tab-workbench #reset-stages-btn {
  min-height: 40px;
  border-radius: 9px;
  font-size: var(--fs-md) !important;
}
#tab-workbench #run-full-pipeline-btn {
  background: var(--accent-blue);
  box-shadow: 0 3px 10px color-mix(in srgb, var(--accent-cyan) 14%, transparent);
}

#tab-workbench .stepper-progress-track {
  position: relative;
  gap: 0.35rem;
  padding: 1rem 0.35rem 0.45rem;
  border-top: 1px solid var(--wb-line);
  scrollbar-color: var(--border-strong) transparent;
}
#tab-workbench .step-node {
  min-width: 92px;
  flex: 1 0 82px;
  padding: 0 0.2rem;
}
#tab-workbench .step-node:not(:last-child)::after {
  top: 15px;
  left: calc(50% + 17px);
  width: calc(100% - 34px);
  height: 2px;
  background: var(--wb-line);
}
#tab-workbench .step-circle {
  width: 34px;
  height: 34px;
  border-width: 1px;
  background: var(--bg-primary);
  font-family: var(--wt-font-sans) !important;
  font-size: var(--fs-sm) !important;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}
#tab-workbench .step-node:hover .step-circle { transform: translateY(-2px); }
#tab-workbench .step-node.active .step-circle {
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
  color: var(--text-inverse, var(--bg-primary));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-cyan) 14%, transparent);
}
#tab-workbench .step-label {
  max-width: 100%;
  font-size: var(--fs-sm) !important;
  line-height: 1.35;
}

#tab-workbench .stage-cards-grid { gap: 1rem; }
#tab-workbench .stage-card {
  position: relative;
  border-color: var(--wb-line);
  border-radius: var(--wb-radius);
  background: var(--bg-secondary);
  box-shadow: 0 3px 12px color-mix(in srgb, var(--bg-primary) 16%, transparent);
}
#tab-workbench .stage-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: transparent;
  transition: background var(--transition-fast);
}
#tab-workbench .stage-card.is-active-focus {
  border-color: color-mix(in srgb, var(--accent-cyan) 50%, var(--border-subtle));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-cyan) 16%, transparent), 0 6px 18px color-mix(in srgb, var(--bg-primary) 18%, transparent);
}
#tab-workbench .stage-card.is-active-focus::before { background: var(--accent-cyan); }
#tab-workbench .stage-card-header {
  min-height: 62px;
  padding: 0.9rem 1.15rem;
  background: linear-gradient(100deg, var(--wb-tint), var(--bg-secondary) 72%);
  border-bottom-color: var(--wb-line);
}
#tab-workbench .stage-info { min-width: 0; gap: 0.7rem; }
#tab-workbench .stage-code {
  min-width: 48px;
  padding: 0.28rem 0.5rem;
  text-align: center;
  border-color: var(--wb-line);
  border-radius: 7px;
  background: var(--bg-primary);
  color: var(--accent-cyan);
  font-family: var(--wt-font-sans) !important;
  font-size: var(--fs-sm) !important;
}
#tab-workbench .stage-name {
  font-size: var(--fs-xl) !important;
  font-weight: 700;
  line-height: 1.4;
}
#tab-workbench .stage-body { padding: clamp(0.9rem, 1.8vw, 1.25rem); }
#tab-workbench .stage-desc {
  max-width: 88ch;
  margin-bottom: 0.8rem;
  font-size: var(--fs-md) !important;
  line-height: 1.7;
}
#tab-workbench .stage-section {
  margin-top: 0.75rem;
  padding: clamp(0.8rem, 1.5vw, 1.05rem);
  border-color: var(--wb-line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg-primary) 72%, var(--bg-secondary));
}
#tab-workbench .stage-section-header {
  gap: 0.55rem;
  margin-bottom: 0.85rem;
  font-size: var(--fs-lg) !important;
  font-weight: 700;
}
#tab-workbench .stage-section-icon {
  display: grid;
  place-items: center;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 7px;
  background: var(--wb-tint);
  font-size: var(--fs-lg) !important;
}
#tab-workbench .stage-section-badge {
  font-size: var(--fs-sm) !important;
}
#tab-workbench .gate-requirements {
  padding: 0.9rem 1rem;
  border-color: color-mix(in srgb, var(--status-review) 22%, var(--border-subtle));
  border-radius: 9px;
  background: color-mix(in srgb, var(--status-review) 5%, var(--bg-primary));
  font-size: var(--fs-md) !important;
  line-height: 1.65;
}
#tab-workbench .gate-title {
  margin-bottom: 0.45rem;
  font-size: var(--fs-lg) !important;
  font-weight: 700;
}
#tab-workbench .stage-actions-bar { align-items: flex-start; }
#tab-workbench .stage-actions-bar > div,
#tab-workbench .blender-action-group,
#tab-workbench .stage-artifacts-actions { gap: 0.55rem !important; }
#tab-workbench .stage-actions-bar .btn,
#tab-workbench .stage-artifacts-actions .btn {
  min-height: 34px;
  border-radius: 8px;
  font-family: var(--wt-font-sans) !important;
  font-size: var(--fs-md) !important;
}
#tab-workbench .stage-inputs-section .form-grid-2 { gap: 0.85rem; }
#tab-workbench .stage-inputs-section .form-group > label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: var(--fs-md) !important;
  font-weight: 600;
  color: var(--text-secondary);
}
#tab-workbench .stage-inputs-section .form-input,
#tab-workbench .stage-inputs-section .form-select {
  min-height: 40px;
  border-radius: 8px;
  font-family: var(--wt-font-sans) !important;
  font-size: var(--fs-md) !important;
}
#tab-workbench .stage-inputs-section .switch-label {
  min-height: 40px;
  font-size: var(--fs-md) !important;
}

#tab-workbench :is(.sidebar-stage-header, .sidebar-sub-item, .step-node, .btn):focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

@media (max-width: 1024px) {
  #tab-workbench .workbench-sidebar {
    flex: 1 1 100%;
    width: 100%;
    min-width: 0;
    max-height: min(46vh, 500px);
    position: static;
    overflow-y: auto;
  }
  #tab-workbench .sidebar-stage-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
    align-items: start;
  }
  #tab-workbench .sidebar-stage-item { min-width: 0; }
  #tab-workbench .sidebar-sub-menu { padding-left: 0.55rem; }
}

@media (max-width: 640px) {
  #tab-workbench .workbench-sidebar { padding: 0.9rem 0.75rem; }
  #tab-workbench .stepper-header-bar { align-items: stretch; }
  #tab-workbench .stepper-header-bar > div:last-child { flex-wrap: wrap; }
  #tab-workbench .stepper-header-bar > div:last-child .btn { flex: 1 1 180px; }
  #tab-workbench .step-node { min-width: 76px; flex-basis: 76px; }
  #tab-workbench .stage-card-header { align-items: flex-start; gap: 0.75rem; }
  #tab-workbench .stage-info { align-items: flex-start; }
  #tab-workbench .stage-actions-bar { flex-direction: column; }
  #tab-workbench .stage-actions-bar > div,
  #tab-workbench .blender-action-group { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  #tab-workbench *,
  #tab-workbench *::before,
  #tab-workbench *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}