.sku-tool {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 20px;
  align-items: start;
  margin: 8px 0 40px;
}
.sku-panel {
  border-radius: 18px;
  padding: 20px;
  background: var(--tbg-6);
  border: 1px solid var(--tbd-2);
}
.sku-panel h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ttx-2);
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}
.sku-panel__hint {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 16px;
}
.sku-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}
.sku-field label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ttx-1);
}
.sku-field .sku-help {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.sku-field input[type="number"],
.sku-field input[type="text"],
.sku-field textarea,
.sku-field select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--tbd-1);
  background: var(--tbg-8);
  color: var(--ttx-2);
  font: inherit;
  padding: 10px 12px;
}
.sku-field textarea {
  min-height: 72px;
  resize: vertical;
}
.sku-field input:focus,
.sku-field textarea:focus,
.sku-field select:focus {
  outline: 2px solid rgba(99, 102, 241, 0.55);
  outline-offset: 1px;
  border-color: rgba(129, 140, 248, 0.8);
}
.sku-sep {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.sku-sep label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 0;
  padding: 10px 6px;
  border-radius: 12px;
  border: 1px solid var(--tbd-1);
  background: var(--tbg-8);
  text-transform: none;
  letter-spacing: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--ttx-2);
  cursor: pointer;
}
.sku-sep input {
  accent-color: var(--accent-strong);
}
.sku-sep label:has(input:checked) {
  border-color: rgba(129, 140, 248, 0.85);
  background: rgba(79, 70, 229, 0.22);
  color: var(--accent-strong);
}
.sku-warn {
  display: none;
  margin: 0 0 14px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(249, 115, 115, 0.45);
  background: rgba(127, 29, 29, 0.25);
  color: #fecaca;
  font-size: 13px;
  line-height: 1.55;
}
.sku-warn.is-visible { display: block; }
.sku-pattern {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  color: var(--accent-strong);
  background: rgba(79, 70, 229, 0.15);
  border: 1px solid rgba(129, 140, 248, 0.4);
  border-radius: 10px;
  padding: 8px 10px;
  margin: 0 0 14px;
  word-break: break-all;
}
.sku-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.sku-actions .btn-primary,
.sku-actions .btn-ghost {
  cursor: pointer;
  border: 0;
}
.sku-actions .btn-ghost[disabled],
.sku-actions .btn-primary[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}
.sku-results {
  min-width: 0;
}
.sku-results__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.sku-results__count {
  font-size: 13px;
  color: var(--text-secondary);
}
.sku-grid-wrap {
  overflow: auto;
  max-height: min(70vh, 720px);
  border-radius: 16px;
  border: 1px solid var(--tbd-2);
  background: var(--tbg-6);
}
.sku-grid {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.sku-grid th,
.sku-grid td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--tbd-2);
  white-space: nowrap;
}
.sku-grid th {
  position: sticky;
  top: 0;
  background: var(--tbg-8);
  color: var(--ttx-1);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 1;
}
.sku-grid td {
  color: var(--ttx-2);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.sku-grid tr.is-dup td.sku-code {
  color: #fecaca;
}
.sku-grid .sku-code {
  font-weight: 600;
  color: var(--accent-strong);
}
.sku-empty {
  padding: 36px 20px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}
.sku-copy {
  border: 1px solid rgba(129, 140, 248, 0.45);
  background: transparent;
  color: var(--accent-strong);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}
.sku-guide a {
  color: var(--accent-strong);
  text-decoration: none;
}
.sku-guide a:hover { text-decoration: underline; }
.sku-guide .why-grid { margin-top: 16px; }
.sku-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: var(--ttx-6, #9ca3af);
  margin: 0 0 16px;
}
.sku-crumb a { color: var(--accent-strong); text-decoration: none; }
.sku-crumb a:hover { text-decoration: underline; }
@media (max-width: 960px) {
  .sku-tool { grid-template-columns: 1fr; }
  .sku-sep { grid-template-columns: repeat(2, 1fr); }
}