:root {
  --surface-bg: #f1f5fc;
  --surface-panel: #ffffff;
  --surface-panel-muted: #edf3fb;
  --surface-canvas: #e4ebf5;
  --surface-ink: #0d121b;
  --surface-muted: #6a7282;
  --surface-line: #dbe3ef;
  --surface-accent: #1c3baa;
  --surface-accent-strong: #1447e6;
  --surface-accent-bright: #0096ec;
  --surface-selected: #e3f0ff;
  --surface-danger: #e85d63;
}

* {
  box-sizing: border-box;
  border-radius: 0 !important;
}
button,
input,
textarea {
  font: inherit;
}
button {
  color: inherit;
}
[hidden] {
  display: none !important;
}
html,
body {
  width: 100%;
  height: 100%;
}
body {
  margin: 0;
  overflow: hidden;
  background: var(--surface-bg) !important;
  color: var(--surface-ink) !important;
  font-family: Inter, 'PingFang SC', 'Microsoft YaHei', sans-serif !important;
}

.enhancement-app {
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-rows: 56px minmax(0, 1fr);
  background: var(--surface-bg);
}
.editor-toolbar {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto minmax(320px, 1fr);
  align-items: center;
  gap: 22px;
  padding: 0 24px;
  border-bottom: 1px solid var(--surface-line);
  background: rgb(255 255 255 / 94%);
  z-index: 30;
}
.current-product-summary,
.editor-actions,
.mode-switch,
.canvas-statusbar,
.view-controls,
.zoom-controls,
.panel-heading,
.drawer-heading,
.assistant-suggestion-actions {
  display: flex;
  align-items: center;
}
.current-product-summary {
  gap: 10px;
  min-width: 0;
}
.current-product-thumb {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  object-fit: cover;
  border: 1px solid var(--surface-line);
  background: var(--surface-panel-muted);
}
.current-product-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}
.current-product-copy strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.eyebrow {
  color: var(--surface-accent);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

button,
.comparison-control {
  min-height: 30px;
  padding: 0 13px;
  border: 1px solid var(--surface-line);
  background: transparent;
  cursor: pointer;
  transition:
    border-color 140ms ease,
    background 140ms ease,
    color 140ms ease;
}
button:hover:not(:disabled),
.comparison-control:hover {
  border-color: var(--surface-accent);
  color: var(--surface-accent);
}
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--surface-accent);
  outline-offset: 2px;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}
.button-primary {
  border-color: var(--surface-accent-strong, #1447e6);
  background: var(--surface-accent-strong, #1447e6);
  color: #fff;
}
.button-primary:hover:not(:disabled) {
  background: var(--surface-accent);
  color: #fff;
}
.product-panel-toggle {
  min-height: 32px;
  padding-inline: 10px;
  border-color: var(--surface-ink);
  font-weight: 650;
}
.mode-switch {
  padding: 3px;
  border: 1px solid var(--surface-line);
}
.mode-switch button {
  min-height: 32px;
  border: 0;
  color: var(--surface-muted);
}
.mode-switch button[aria-pressed='true'] {
  background: var(--surface-accent);
  color: #fff;
}
.editor-actions {
  justify-content: flex-end;
  gap: 7px;
}
.editor-actions button {
  min-width: 58px;
  min-height: 30px;
  padding-inline: 9px;
}

.editor-layout {
  min-height: 0;
  display: grid;
  grid-template-columns: 260px minmax(520px, 1fr) 320px;
  background: var(--surface-line);
  gap: 1px;
  transition: grid-template-columns 180ms ease;
}
.product-panel,
.effect-panel,
.preview-stage {
  min-height: 0;
  background: var(--surface-panel);
}
.product-panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.effect-panel {
  overflow: hidden;
}
.panel-heading {
  justify-content: space-between;
  min-height: 50px;
  padding: 9px 14px;
  border-bottom: 1px solid var(--surface-line);
}
.panel-heading h2,
.drawer-heading h2 {
  margin: 0;
  font:
    600 16px/1.1 Georgia,
    'Songti SC',
    serif;
}
.panel-heading--compact {
  min-height: 50px;
}
.product-heading-labels {
  flex: 1;
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 12px;
  color: var(--surface-ink);
  font-size: 15px;
  font-weight: 650;
}
.product-heading-labels span + span {
  color: var(--surface-muted);
  font-weight: 500;
}
.product-count {
  color: var(--surface-muted);
  font-size: 12px;
}
.search-box {
  padding: 6px 10px 8px;
  border-bottom: 1px solid var(--surface-line) !important;
}
.search-box input {
  width: 100%;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--surface-line) !important;
  background: var(--surface-bg) !important;
  color: var(--surface-ink) !important;
}
.product-list {
  min-height: 0;
  flex: 1;
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  align-content: start;
  gap: 10px !important;
  padding: 14px !important;
  overflow: auto;
  background: var(--surface-panel-muted);
}
.product-card {
  position: relative;
  z-index: 1;
  min-width: 0;
  min-height: 0 !important;
  display: grid !important;
  grid-template-rows: auto 66px !important;
  align-self: start;
  border: 1px solid var(--surface-line) !important;
  background: var(--surface-panel) !important;
  overflow: hidden;
  cursor: pointer;
  transform: none !important;
  box-shadow: none !important;
}
.product-card:hover,
.product-card.active {
  z-index: 20;
  border-color: var(--surface-accent) !important;
}
.product-card.active {
  box-shadow: inset 0 0 0 2px var(--surface-accent) !important;
}
.product-card__media {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background: #edf3fb;
}
.product-card__media img {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  display: block;
  object-fit: cover;
  opacity: 0;
  transition: opacity 160ms ease;
  background: transparent !important;
  animation: none !important;
}
.product-card__media img.loaded {
  opacity: 1;
}
.product-card .info {
  min-width: 0;
  min-height: 66px;
  padding: 9px 10px !important;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--surface-panel);
}
.product-card .sku {
  color: var(--surface-accent) !important;
  font-size: 11px !important;
}
.product-card .cat {
  color: var(--surface-muted) !important;
  font-size: 10px !important;
  line-height: 1.35;
}
.product-card:hover .info {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  min-height: auto;
  background: var(--surface-panel);
  box-shadow: 0 -8px 18px rgb(13 18 27 / 12%);
}
.product-card--skeleton {
  pointer-events: none;
}
.product-card--skeleton .product-card__media,
.product-card--skeleton .info span {
  background: #dbe3ef;
  animation: product-skeleton-pulse 1.25s ease-in-out infinite;
}
.product-card--skeleton .info {
  gap: 8px;
}
.product-card--skeleton .info span {
  width: 72%;
  height: 8px;
  display: block;
}
.product-card--skeleton .info span:last-child {
  width: 92%;
}
@keyframes product-skeleton-pulse {
  0%,
  100% {
    opacity: 0.58;
  }
  50% {
    opacity: 1;
  }
}

.preview-stage {
  display: grid;
  grid-template-rows: 50px minmax(0, 1fr);
  background: var(--surface-canvas);
}
.canvas-viewport {
  min-width: 0;
  min-height: 0;
  display: grid;
  place-items: center;
  padding: 26px;
  overflow: auto;
  background: #e4ebf5 !important;
}
.preview-canvas-stack {
  --comparison-position: 50%;
  --canvas-zoom: 1;
  position: relative;
  width: min(100%, 760px);
  max-height: calc(100vh - 250px);
  aspect-ratio: 1;
  transform: scale(var(--canvas-zoom));
  transform-origin: center;
  background: #071a42;
  box-shadow: 0 14px 34px rgb(13 18 27 / 13%);
}
.preview-canvas-stack canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #071a42;
  display: block;
}
.result-layer {
  position: absolute;
  inset: 0;
}
.preview-canvas-stack.is-comparing .result-layer {
  clip-path: inset(0 0 0 var(--comparison-position));
}
.preview-canvas-stack.is-showing-original .result-layer {
  visibility: hidden;
}
.preview-canvas-stack.is-showing-original #comparison-handle {
  visibility: hidden;
}
#comparison-handle {
  display: none;
  position: absolute;
  z-index: 4;
  top: 0;
  bottom: 0;
  left: var(--comparison-position);
  width: 30px;
  min-height: 0;
  padding: 0;
  transform: translateX(-15px);
  border: 0;
  cursor: ew-resize;
}
.is-comparing #comparison-handle {
  display: block;
}
#comparison-handle::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #fff;
  box-shadow: 0 0 0 1px rgb(13 18 27 / 28%);
}
#comparison-handle span {
  position: absolute;
  left: 5px;
  top: 50%;
  width: 20px;
  height: 36px;
  margin-top: -18px;
  background: #fff;
  border: 1px solid var(--surface-ink);
}
.canvas-empty {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: grid;
  place-content: center;
  gap: 8px;
  text-align: center;
  background: #071a42;
  color: #fff;
}
.canvas-empty span {
  color: #b9c8e0;
  font-size: 12px;
}
.processing-indicator {
  position: absolute;
  z-index: 6;
  left: 14px;
  bottom: 14px;
  padding: 8px 11px;
  background: var(--surface-ink);
  color: #fff;
  font-size: 11px;
  letter-spacing: 0.08em;
}
.canvas-statusbar {
  justify-content: space-between;
  gap: 14px;
  padding: 0 12px;
  border-bottom: 1px solid var(--surface-line);
  background: var(--surface-panel);
}
.view-controls,
.zoom-controls {
  gap: 6px;
}
.canvas-statusbar button,
.comparison-control {
  min-height: 32px;
  padding: 0 10px;
  font-size: 11px;
}
.comparison-control {
  display: inline-flex;
  gap: 7px;
  align-items: center;
}
.comparison-control input {
  accent-color: var(--surface-accent);
}
.canvas-meta {
  display: flex;
  gap: 12px;
  color: var(--surface-muted);
  font-size: 11px;
}
#zoom-value {
  min-width: 42px;
  text-align: center;
  color: var(--surface-muted);
  font-size: 11px;
}

.mode-panel {
  height: 100%;
  overflow: auto;
  background: var(--surface-panel);
}
.preset-list {
  display: grid;
  gap: 8px;
  padding: 16px;
}
.preset-card {
  display: grid;
  grid-template-columns: 30px 1fr;
  grid-template-rows: auto auto;
  min-height: 70px;
  padding: 12px;
  text-align: left;
  border-color: var(--surface-line);
  background: var(--surface-panel);
}
.preset-card.is-active {
  border-color: var(--surface-accent);
  background: var(--surface-selected);
}
.preset-index {
  grid-row: 1 / span 2;
  align-self: start;
  color: var(--surface-accent);
  font:
    600 10px/1.5 ui-monospace,
    monospace;
}
.preset-card strong {
  font-size: 13px;
}
.preset-card > span:last-child {
  margin-top: 4px;
  color: var(--surface-muted);
  font-size: 11px;
  line-height: 1.4;
}
.strength-control {
  margin: 0 16px;
  padding: 16px 0;
  border-top: 1px solid var(--surface-line);
  border-bottom: 1px solid var(--surface-line);
}
.strength-control > div {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 12px;
}
.strength-control output {
  color: var(--surface-accent);
  font-weight: 700;
}
.strength-control input {
  width: 100%;
  accent-color: var(--surface-accent);
}
.panel-note {
  margin: 14px 16px;
  color: var(--surface-muted);
  font-size: 11px;
  line-height: 1.6;
}

.professional-step-list {
  display: grid;
  gap: 7px;
  padding: 12px;
  border-bottom: 1px solid var(--surface-line);
}
.steps-empty {
  display: grid;
  gap: 6px;
  padding: 22px 10px;
  text-align: center;
  color: var(--surface-muted);
}
.steps-empty strong {
  color: var(--surface-ink);
  font-size: 12px;
}
.steps-empty span {
  font-size: 10px;
  line-height: 1.5;
}
.professional-step {
  border: 1px solid var(--surface-line);
  background: #fff;
}
.professional-step.is-disabled {
  opacity: 0.55;
}
.step-row {
  min-height: 58px;
  display: grid;
  grid-template-columns: 18px 24px minmax(0, 1fr) 30px;
  align-items: center;
  gap: 4px;
  padding: 7px;
}
.drag-handle {
  color: var(--surface-muted);
  cursor: grab;
}
.step-enabled {
  display: grid;
  place-items: center;
}
.step-enabled input {
  accent-color: var(--surface-accent);
}
.step-expand {
  min-width: 0;
  padding: 2px 6px;
  border: 0;
  display: grid;
  gap: 4px;
  text-align: left;
}
.step-expand strong {
  font-size: 12px;
}
.step-expand span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--surface-muted);
  font-size: 10px;
}
.step-remove {
  width: 30px;
  min-height: 30px;
  padding: 0;
  border: 0;
  color: var(--surface-muted);
  font-size: 18px;
}
.step-remove:hover {
  color: var(--surface-danger) !important;
}
.step-parameters {
  display: grid;
  gap: 13px;
  padding: 12px;
  border-top: 1px solid var(--surface-line);
  background: var(--surface-bg);
}
.step-param {
  display: grid;
  gap: 8px;
}
.step-param span {
  display: flex;
  justify-content: space-between;
  color: var(--surface-muted);
  font-size: 10px;
}
.step-param output {
  color: var(--surface-accent);
  font-weight: 700;
}
.step-param input {
  width: 100%;
  accent-color: var(--surface-accent);
}
.empty-parameters {
  margin: 0;
  color: var(--surface-muted);
  font-size: 10px;
}
.operator-library {
  padding: 14px 12px 20px;
}
.library-title {
  margin-bottom: 9px;
  color: var(--surface-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
}
.operator-group {
  border-top: 1px solid var(--surface-line);
}
.operator-group summary {
  padding: 11px 2px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 650;
}
.operator-group > div {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 5px;
  padding: 0 0 10px;
}
.operator-group button {
  min-height: 32px;
  padding: 5px 7px;
  background: var(--surface-bg);
  font-size: 10px;
}

.assistant-toggle {
  position: fixed;
  z-index: 40;
  right: 18px;
  bottom: 18px;
  min-height: 42px;
  border-color: var(--surface-accent-strong);
  background: var(--surface-accent-strong);
  color: #fff;
}
.assistant-toggle:hover {
  background: var(--surface-accent);
  color: #fff !important;
}
.assistant-backdrop {
  position: fixed;
  z-index: 49;
  inset: 0;
  background: rgb(13 18 27 / 24%);
}
.assistant-drawer {
  position: fixed;
  z-index: 50;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(420px, 100vw);
  display: grid;
  grid-template-rows: 76px minmax(0, 1fr) auto auto;
  border-left: 1px solid var(--surface-line);
  background: var(--surface-panel);
  box-shadow: -16px 0 40px rgb(13 18 27 / 13%);
}
.drawer-heading {
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--surface-line);
}
.drawer-heading button {
  width: 36px;
  padding: 0;
  font-size: 22px;
}
.chat-history {
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: auto;
  padding: 16px;
  background: var(--surface-panel-muted) !important;
}
.msg {
  max-width: 88%;
  padding: 11px 13px;
  font-size: 12px;
  line-height: 1.55;
}
.msg-ai {
  align-self: flex-start;
  border: 1px solid var(--surface-line);
  background: var(--surface-panel) !important;
  color: var(--surface-ink) !important;
}
.msg-user {
  align-self: flex-end;
  background: var(--surface-ink) !important;
  color: #fff !important;
}
.steps-preview {
  display: grid;
  gap: 5px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--surface-line);
  color: var(--surface-muted) !important;
  font-family: inherit !important;
}
.quick-prompts {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 14px;
  border-top: 1px solid var(--surface-line);
}
.quick-chip {
  min-height: 30px;
  padding: 0 9px;
  background: var(--surface-selected) !important;
  color: var(--surface-accent) !important;
  font-size: 10px;
}
.assistant-suggestion {
  padding: 14px;
  border-top: 1px solid var(--surface-line);
}
.assistant-suggestion > strong {
  font-size: 12px;
}
#assistant-suggestion-list {
  display: grid;
  gap: 7px;
  margin: 10px 0;
}
#assistant-suggestion-list > div {
  display: flex;
  gap: 10px;
  padding: 9px;
  border: 1px solid var(--surface-line);
}
#assistant-suggestion-list > div > span {
  color: var(--surface-accent);
  font:
    700 10px/1.4 ui-monospace,
    monospace;
}
#assistant-suggestion-list p {
  display: grid;
  gap: 2px;
  margin: 0;
}
#assistant-suggestion-list strong {
  font-size: 11px;
}
#assistant-suggestion-list small {
  color: var(--surface-muted);
  font-size: 10px;
}
.assistant-suggestion-actions {
  justify-content: flex-end;
  gap: 6px;
}
.chat-input {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  padding: 14px;
  border-top: 1px solid var(--surface-line) !important;
  background: var(--surface-panel) !important;
}
.chat-input textarea {
  min-height: 62px;
  padding: 10px;
  resize: none;
  border: 1px solid var(--surface-line) !important;
  background: var(--surface-bg) !important;
  color: var(--surface-ink) !important;
}
.chat-input button {
  align-self: stretch;
}

.empty-state {
  color: var(--surface-muted) !important;
}
.toast {
  z-index: 100;
  color: var(--surface-ink) !important;
  background: var(--surface-panel) !important;
  border-color: var(--surface-line) !important;
  box-shadow: 0 10px 24px rgb(13 18 27 / 12%) !important;
}
.toast.error {
  color: var(--surface-danger) !important;
  border-color: var(--surface-danger) !important;
}
.toast.success {
  color: var(--surface-accent) !important;
  border-color: var(--surface-accent) !important;
}
::-webkit-scrollbar {
  width: 7px;
  height: 7px;
}
::-webkit-scrollbar-thumb {
  background: #b7c5dc !important;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--surface-accent) !important;
}
body.is-product-panel-collapsed .editor-layout {
  grid-template-columns: 0 minmax(520px, 1fr) 320px;
}
body.is-product-panel-collapsed .product-panel {
  visibility: hidden;
}

@media (max-width: 1440px) {
  .editor-layout {
    grid-template-columns: 220px minmax(520px, 1fr) 300px;
  }
  .product-list {
    grid-template-columns: 1fr !important;
  }
  .current-product-copy {
    display: none;
  }
  .editor-toolbar {
    grid-template-columns: minmax(120px, 1fr) auto minmax(300px, 1fr);
  }
}
@media (max-width: 1180px) {
  .editor-layout {
    grid-template-columns: 0 minmax(520px, 1fr) 290px;
  }
  .product-panel {
    visibility: hidden;
    position: absolute;
    z-index: 35;
    top: 56px;
    bottom: 0;
    left: 0;
    width: 260px;
    box-shadow: 12px 0 28px rgb(13 18 27 / 16%);
  }
  body:not(.is-product-panel-collapsed) .product-panel {
    visibility: visible;
  }
  body.is-product-panel-collapsed .editor-layout {
    grid-template-columns: 0 minmax(520px, 1fr) 290px;
  }
  .editor-toolbar {
    padding-inline: 14px;
    gap: 10px;
  }
  .editor-actions button {
    min-width: 48px;
    padding-inline: 8px;
  }
  .stage-hint {
    display: none;
  }
}