:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --sidebar: #1e2a3a;
  --sidebar-text: #c8d4e4;
  --accent: #f97316;
  --accent-soft: #ffedd5;
  --accent-blue: #3b82f6;
  --text: #1a2332;
  --muted: #64748b;
  --border: #e2e8f0;
  --danger: #dc2626;
  --success: #16a34a;
  --radius: 10px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--sidebar);
  color: var(--sidebar-text);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  transition: opacity 0.15s;
}
.brand:hover { opacity: 0.85; }
.brand-logo {
  border-radius: 8px;
  flex-shrink: 0;
}
.brand-text { min-width: 0; }
.brand h1 {
  margin: 0;
  font-size: 0.95rem;
  color: #fff;
  line-height: 1.25;
}
.brand-accent { color: var(--accent); }
.brand p {
  margin: 4px 0 0;
  font-size: 0.72rem;
  color: #94a3b8;
}

.sidebar-user {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 4px 8px;
  margin-top: -12px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 8px;
}

.sidebar-user-link {
  font-size: 0.72rem;
  color: #94a3b8;
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 6px;
}

.sidebar-user-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.06);
}

.sidebar-user-logout {
  font-size: 0.68rem;
  color: #64748b;
  text-decoration: none;
  padding: 2px 8px;
}

.sidebar-user-logout:hover { color: #f87171; }

body:has(.demo-tour-bar) .app-shell {
  padding-bottom: 64px;
}

body:has(.demo-tour-bar) .demo-banner {
  bottom: 64px;
}

.nav { display: flex; flex-direction: column; gap: 6px; }
.nav-item {
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
}
.nav-item:hover { background: rgba(255,255,255,0.06); }
.nav-item.active {
  background: rgba(249, 115, 22, 0.18);
  color: #fff;
}

.main {
  padding: 24px 28px 40px;
  overflow: auto;
}

.panel.hidden { display: none; }

.page-header {
  margin-bottom: 20px;
}
.page-header h2 {
  margin: 0 0 6px;
  font-size: 1.5rem;
}
.page-header p {
  margin: 0;
  color: var(--muted);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card .label {
  color: var(--muted);
  font-size: 0.85rem;
}
.card .value {
  margin-top: 8px;
  font-size: 1.4rem;
  font-weight: 600;
}

.split {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 20px;
  align-items: start;
}

.form-card, .table-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.form-grid .full { grid-column: 1 / -1; }

label {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 4px;
}
input, select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 10px;
  font: inherit;
  background: #fff;
}
input:focus, select:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.btn {
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.05); }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-sm { padding: 6px 10px; font-size: 0.85rem; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
th, td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #1d4ed8;
  font-size: 0.75rem;
  text-transform: capitalize;
}
.swatch {
  display: inline-block;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.order-card {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}
.order-card h3 { margin: 0 0 4px; font-size: 1rem; }
.order-brief { margin: 4px 0; font-size: 0.88rem; color: var(--text); }
.order-lines-preview { margin: 2px 0 6px; font-size: 0.78rem; line-height: 1.4; }
.order-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.interim-best-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
  margin-top: 8px;
}
.interim-best-row {
  font-size: 0.82rem;
  padding: 8px 10px;
  border-radius: 6px;
  background: var(--surface-2, #f1f5f9);
  border: 1px solid var(--border);
}
.interim-best-row.is-new-best {
  border-color: #16a34a;
  background: #f0fdf4;
}
.pack-summary { color: #1d4ed8; font-size: 0.9rem; margin: 6px 0 0; }

.order-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.pack-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 20px;
}
#viewer3d {
  min-height: 520px;
  background: #eef2f7;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.result-hero {
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.result-bin {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: #fff;
  font-size: 0.9rem;
}
.result-bin h4 { margin: 0 0 6px; }
.result-bin ul { margin: 8px 0 0; padding-left: 18px; }

.step-chips {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 220px;
  overflow: auto;
  margin-bottom: 12px;
}
.step-chip {
  text-align: left;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 0.85rem;
}
.step-chip.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.step-detail {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  min-height: 64px;
}
.step-nav { display: flex; gap: 8px; margin-top: 10px; }

.muted { color: var(--muted); }
.alert-error {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 12px;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: #1e293b;
  color: #fff;
  padding: 12px 16px;
  border-radius: 8px;
  opacity: 0;
  transform: translateY(8px);
  transition: 0.2s ease;
  z-index: 100;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-success { background: #166534; }
.toast-error { background: #991b1b; }

.demo-banner {
  position: fixed;
  bottom: 0;
  left: 240px;
  right: 0;
  background: linear-gradient(90deg, #1e2a3a 0%, #2d3f56 100%);
  color: #c8d4e4;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  z-index: 90;
  border-top: 2px solid var(--accent);
}
.demo-banner.hidden { display: none; }
.demo-banner a {
  color: var(--accent);
  font-weight: 600;
  margin-left: auto;
  text-decoration: none;
  white-space: nowrap;
}
.demo-banner a:hover { text-decoration: underline; }
.demo-banner a + a { margin-left: 16px; }

@media (max-width: 768px) {
  .demo-banner { left: 0; flex-wrap: wrap; }
}

.research-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  line-height: 1.55;
  font-size: 0.92rem;
}
.research-box h3 { margin-top: 0; }
.research-box ul { padding-left: 20px; }

.action-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }

.designer-layout {
  display: grid;
  grid-template-columns: 340px 320px 1fr;
  gap: 16px;
  align-items: start;
}
.designer-preview-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}
.designer-preview-card h3 { margin: 0 0 10px; font-size: 0.95rem; }
.designer-canvas {
  height: 280px;
  border-radius: 8px;
  overflow: hidden;
  background: #eef2f7;
}
.designer-table { grid-column: 1 / -1; }
.dim-slider input[type="range"] { width: 100%; margin: 6px 0; accent-color: var(--accent); }
.dim-readout {
  margin: 12px 0 0;
  padding: 10px;
  background: var(--accent-soft);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
}

.help-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.help-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
.help-card-box { border-left: 3px solid var(--accent); }
.help-card h4 { margin: 0 0 6px; font-size: 0.92rem; }
.help-card p { margin: 0; font-size: 0.85rem; color: var(--muted); }
.badge-strange { background: #fef3c7; color: #b45309; }
.badge-cube { background: #dcfce7; color: #166534; font-size: 0.7rem; }
.badge-container { background: #e2e8f0; color: #334155; font-size: 0.7rem; }
.badge-known { background: #dbeafe; color: #1d4ed8; font-size: 0.7rem; }
.badge-furniture { background: #ffedd5; color: #9a3412; }
.preset-row { display: flex; flex-wrap: wrap; gap: 8px; }
.notes-cell { font-size: 0.85rem; max-width: 280px; }

.orders-split { grid-template-columns: 360px 1fr; }
.orders-toolbar { margin-bottom: 12px; }
.search-input {
  width: 100%;
  max-width: 320px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
}
.status-ok { color: #1d4ed8; font-size: 0.88rem; }
.status-fail { color: var(--danger); font-size: 0.88rem; }

.load-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.load-badge {
  background: var(--accent-soft);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
}
.load-workspace {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  max-width: 1600px;
}

.load-toolbar-compact {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
}
.load-toolbar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.pack-goal-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.pack-goal-label {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
}
.pack-mode-select {
  min-width: 200px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.88rem;
}
.search-summary-banner {
  font-size: 0.82rem;
  line-height: 1.4;
  padding: 8px 10px;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.search-summary-banner.verified {
  background: #f0fdf4;
  border-color: #86efac;
  color: #14532d;
}
.search-summary-compare {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  opacity: 0.9;
}

.load-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
  gap: 12px;
  align-items: stretch;
  min-width: 0;
}
.load-stage-visual {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: 12px !important;
}
.load-viewer-wrap {
  position: relative;
  flex: 1;
  min-height: 320px;
}
.viewer-search-overlay {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  z-index: 4;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.viewer-search-overlay.hidden {
  opacity: 0;
  visibility: hidden;
}
.vso-inner {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.88);
  color: #f1f5f9;
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.2);
}
.viewer-search-overlay.mode-preview .vso-inner {
  border-color: rgba(96, 165, 250, 0.55);
}
.viewer-search-overlay.mode-best .vso-inner {
  border-color: rgba(134, 239, 172, 0.5);
}
.vso-phase {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #94a3b8;
}
.vso-label {
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.35;
}
.option-cycler-bar.is-previewing {
  border-color: #93c5fd;
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.15);
}

.order-item-select-list {
  width: 100%;
  min-height: 9.5rem;
  margin-top: 6px;
  font-size: 0.84rem;
}
#order-item-filter {
  margin-top: 4px;
}

.inner-product-picker {
  margin: 12px 0;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.inner-product-picker h4 {
  margin: 0 0 4px;
  font-size: 0.88rem;
}
.inner-picker-hint {
  margin: 0 0 8px;
  font-size: 0.75rem;
}
.inner-product-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
}
.inner-product-chip {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  text-align: left;
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #f8fafc;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.inner-product-chip:hover {
  border-color: #93c5fd;
  background: #eff6ff;
}
.inner-product-chip.active {
  border-color: #3b82f6;
  background: #dbeafe;
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.2);
}
.inner-product-chip.unplaced {
  opacity: 0.65;
  border-style: dashed;
}
.ipc-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
}
.ipc-meta {
  font-size: 0.72rem;
  color: var(--muted);
}

.load-options-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}
.load-option-card {
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.load-option-card:hover {
  border-color: #93c5fd;
}
.load-option-card.active {
  border-color: #3b82f6;
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.2);
}
.load-option-card.recommended .loc-rank::after {
  content: ' ★';
  color: #16a34a;
}
.loc-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}
.loc-rank {
  font-weight: 700;
  font-size: 0.9rem;
}
.loc-cube {
  font-weight: 600;
  font-size: 0.82rem;
  color: #1d4ed8;
}
.loc-outers {
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.loc-inners {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.35;
}
.opt-inner-line strong {
  color: var(--text);
}
.load-sidebar-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  max-height: min(72vh, 720px);
  overflow: hidden;
  padding: 12px !important;
}
.load-sidebar-panel #pack-result {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}
.card-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  min-width: 0;
}
.subsection-title { margin: 12px 0 8px; font-size: 0.9rem; font-weight: 600; }
.load-collapse {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 14px 14px;
}
.load-collapse summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 0;
  list-style: none;
}
.load-collapse summary::-webkit-details-marker { display: none; }
.load-collapse[open] summary { border-bottom: 1px solid var(--border); margin-bottom: 10px; }

.cube-analysis-panel { margin-bottom: 8px; }
.cube-analysis-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.cube-best-pill {
  background: #dcfce7;
  color: #166534;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
}
.cube-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
.cube-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.cube-table th, .cube-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.cube-table th:last-child,
.cube-table td:last-child {
  max-width: 180px;
  font-size: 0.75rem;
}
.cube-table th { background: #f8fafc; color: var(--muted); font-weight: 600; }
.cube-table tbody tr { cursor: pointer; }
.cube-table tbody tr:hover { background: #f8fafc; }

.search-progress-section {
  margin-top: 8px;
}
.search-progress-section .search-status {
  margin: 6px 0 0;
  font-size: 0.82rem;
}
#btn-rerun-pack:disabled {
  opacity: 0.65;
  cursor: wait;
}
.search-cycle-panel { margin-bottom: 10px; }
.search-cycle-feed {
  max-height: 140px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0f172a;
  color: #e2e8f0;
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
  padding: 8px;
}
.cycle-tick {
  display: flex;
  gap: 8px;
  padding: 3px 0;
  border-bottom: 1px solid #1e293b;
  line-height: 1.35;
}
.cycle-tick.is-new-best { color: #86efac; font-weight: 600; }
.cycle-tick.type-complete { color: #93c5fd; border-bottom: none; padding-top: 8px; }
.cycle-no { flex: 0 0 52px; color: #64748b; }
.cycle-text { flex: 1; min-width: 0; }

.option-cycler-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
}
.option-cycler-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.option-cycler-label {
  flex: 1;
  min-width: 120px;
  font-size: 0.84rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.option-strip {
  display: flex;
  gap: 5px;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}
.option-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 0 0 auto;
  min-width: 48px;
  padding: 5px 7px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  font-size: 0.68rem;
  transition: border-color 0.15s, background 0.15s;
}
.option-chip:hover { border-color: #93c5fd; }
.option-chip.active { border-color: var(--accent); background: var(--accent-soft); }
.option-chip.recommended { border-left: 3px solid #16a34a; }
.option-chip .chip-num { font-weight: 700; font-size: 0.8rem; }
.option-chip .chip-cube { color: var(--muted); margin-top: 2px; }
.cube-row-active { background: var(--accent-soft) !important; }
.cube-row-best td:nth-child(3) { color: #15803d; }
.cube-delta-best { color: #15803d; font-weight: 600; }
.cube-delta-worse { color: #b45309; }

.load-options-section h3 { margin: 0 0 4px; font-size: 1rem; }
.options-hint { margin: 0 0 10px; font-size: 0.85rem; }
.load-options-row {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
}
.alt-plan-banner {
  background: #fff7ed;
  border: 1px solid #fdba74;
}
.btn-link {
  background: none;
  border: none;
  color: #2563eb;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  padding: 0;
  text-decoration: underline;
}
.btn-link:hover { color: #1d4ed8; }

.load-option-card {
  flex: 0 0 220px;
  text-align: left;
  border: 2px solid var(--border);
  background: #fff;
  border-radius: 10px;
  padding: 12px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.load-option-card:hover { border-color: #93c5fd; }
.load-option-card.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}
.load-option-card.recommended { border-left: 4px solid #16a34a; }
.load-option-card .opt-rank { font-weight: 700; font-size: 0.9rem; }
.load-option-card .opt-badge {
  display: inline-block;
  font-size: 0.7rem;
  background: #dcfce7;
  color: #166534;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
}
.load-option-card .opt-badge-multi {
  background: #dbeafe;
  color: #1d4ed8;
}
.load-option-card .opt-outers { font-size: 0.82rem; margin-top: 6px; color: var(--text); }
.load-option-card .opt-meta { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }

.inner-outer-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  min-width: 0;
}
.io-card {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  max-height: 280px;
  overflow: auto;
  min-width: 0;
}
.io-card h4 { margin: 0 0 10px; font-size: 0.9rem; }
.io-table { width: 100%; font-size: 0.8rem; border-collapse: collapse; }
.io-table th, .io-table td {
  text-align: left;
  padding: 6px 4px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.io-table th { color: var(--muted); font-weight: 600; }
.io-rot { color: #1d4ed8; font-size: 0.75rem; }
.io-min { color: #15803d; font-size: 0.75rem; }
.compare-pill { background: #f0fdf4; border-color: #86efac; }

.viewer-mode-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.view3d-btn {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.78rem;
  cursor: pointer;
}
.view3d-btn.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

@media (max-width: 900px) {
  .inner-outer-panel { grid-template-columns: 1fr; }
}
.load-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.load-stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.load-stat {
  flex: 1;
  min-width: 90px;
  padding: 10px 14px;
  border-right: 1px solid var(--border);
}
.load-stat:last-child { border-right: 0; }
.load-stat .k {
  display: block;
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 2px;
}
.load-stat .v {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.2;
}
.load-stat.highlight { background: #f0fdf4; }
.load-stat-wide {
  flex: 2;
  min-width: 200px;
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  width: 100%;
  font-size: 0.82rem;
  background: #f8fafc;
}
.stat-pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  min-width: 100px;
}
.stat-pill.wide { flex: 1; min-width: 200px; }
.stat-pill .label { display: block; font-size: 0.75rem; color: var(--muted); }
.stat-pill .val { font-weight: 600; font-size: 0.95rem; }
.stat-pill.muted-pill { background: #f8fafc; }
.load-bin-tabs { margin-bottom: 0; }
.load-bin-tabs .bin-tab-row { margin-top: 0; }
.bin-tab {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 0.85rem;
}
.bin-tab.active { border-color: var(--accent); background: var(--accent-soft); color: #1d4ed8; }
.bin-tab { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; border-radius: 10px; }
.bin-tab-num { font-weight: 600; font-size: 0.88rem; }
.bin-tab-meta { font-size: 0.75rem; color: var(--muted); }
.bin-tab-row { display: flex; flex-wrap: wrap; gap: 8px; }
.outer-summary { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; width: 100%; }
.outer-type-chip {
  background: #dcfce7;
  color: #166534;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}
.stat-pill.highlight { border-color: #86efac; background: #f0fdf4; }
.result-hero { margin-bottom: 10px; }
.result-hero h3 { margin: 0 0 4px; font-size: 1rem; }
.result-hero p { margin: 0; font-size: 0.82rem; color: var(--muted); }
.outer-box-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
  max-height: 120px;
  overflow: auto;
}
.step-guide-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.step-guide-header h4 { margin: 0; font-size: 0.88rem; }
.simulate-load-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--muted, #64748b);
  cursor: pointer;
  white-space: nowrap;
}
.simulate-load-toggle input { margin: 0; }
.step-chips {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 140px;
  overflow-y: auto;
  margin-bottom: 8px;
}
.step-chip {
  text-align: left;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 0.72rem;
  line-height: 1.3;
  cursor: pointer;
}
.step-chip.active { border-color: var(--accent); background: var(--accent-soft); }
.step-detail { font-size: 0.78rem; line-height: 1.4; margin: 0 0 8px; }
.step-nav { display: flex; gap: 8px; }
.order-lines-box { display: none; }
.outer-box-card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
}
.outer-box-card strong { color: #1d4ed8; }
.load-viewer {
  min-height: 420px;
  height: min(62vh, 640px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #eef2f7;
  min-width: 0;
  flex: 1;
  position: relative;
}
.load-viewer canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}
.load-viewer-hero {
  min-height: min(58vh, 600px);
  height: min(58vh, 600px);
}

.load-bottom-tabs { padding: 0 !important; overflow: hidden; }
.load-tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  background: #f8fafc;
}
.load-tab-btn {
  border: 0;
  background: transparent;
  padding: 12px 18px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.load-tab-btn:hover { color: var(--text); background: #fff; }
.load-tab-btn.active {
  color: var(--accent);
  background: #fff;
  border-bottom-color: var(--accent);
}
.load-tab-panel {
  display: none;
  padding: 14px;
  max-height: 360px;
  overflow-y: auto;
}
.load-tab-panel.active { display: block; }
.order-lines-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.order-lines-box h4 { margin: 0 0 8px; }
.order-lines-box ul { margin: 0; padding-left: 18px; }

.search-trace-section {
  padding: 0;
  background: transparent;
  border: 0;
}
.search-progress-wrap {
  height: 6px;
  background: #e8edf5;
  border-radius: 999px;
  overflow: hidden;
  margin: 10px 0 8px;
}
.search-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #3b82f6, #22c55e);
  transition: width 0.2s ease;
}
.search-trace-log {
  max-height: 220px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.8rem;
}
.search-trace-row {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 8px;
  align-items: start;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  background: #f8fafc;
}
.search-trace-row:hover { border-color: var(--border); background: #fff; }
.search-trace-row.active { border-color: var(--accent); background: var(--accent-soft); }
.search-trace-row.type-plan-found { border-left: 3px solid #22c55e; }
.search-trace-row.type-bin-packed { border-left: 3px solid #3b82f6; }
.search-trace-row.type-strategy-start { border-left: 3px solid #94a3b8; }
.search-trace-row.type-search-complete { border-left: 3px solid #16a34a; font-weight: 600; }
.search-trace-row.type-new-best,
.search-trace-row.is-new-best { border-left: 3px solid #16a34a; background: #f0fdf4; font-weight: 600; }
.search-trace-row.type-rated { border-left: 3px solid #e2e8f0; }
.search-trace-row.type-exhaustive-complete { border-left: 3px solid #16a34a; font-weight: 600; }
.trace-no { color: var(--muted); font-size: 0.75rem; }
.trace-label { line-height: 1.35; }
.trace-meta { color: var(--muted); font-size: 0.72rem; white-space: nowrap; }
.search-status { margin: 0; font-size: 0.85rem; }
.searching-pulse { animation: pulse 1.2s ease infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.hidden { display: none !important; }

@media (max-width: 1200px) {
  .designer-layout { grid-template-columns: 1fr 1fr; }
  .designer-table { grid-column: 1 / -1; }
  .load-stage { grid-template-columns: 1fr; }
  .load-sidebar-panel { max-height: none; }
  .load-viewer, .load-viewer-hero { height: 380px; min-height: 380px; }
  .load-tab-panel { max-height: 300px; }
}

@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .split, .orders-split { grid-template-columns: 1fr; }
  .designer-layout { grid-template-columns: 1fr; }
}

.app-shell-embed {
  grid-template-columns: 1fr;
  min-height: 100vh;
}

.app-shell-embed .sidebar {
  display: none;
}

.app-embed #demo-banner {
  display: none !important;
}

.app-shell-embed .main {
  padding: 0;
}

.app-shell-embed .page-header {
  padding: 12px 16px 0;
}

.app-shell-embed .load-stage {
  min-height: calc(100vh - 48px);
}