:root {
  color-scheme: dark;
  --bg: #11100d;
  --panel: #1d1b17;
  --panel-2: #26231d;
  --text: #f2eee4;
  --muted: #a8a094;
  --line: #3a352b;
  --accent: #28d7b4;
  --accent-2: #f3c65c;
  --danger: #ff6f61;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(40, 215, 180, 0.12), transparent 34%),
    linear-gradient(315deg, rgba(243, 198, 92, 0.11), transparent 34%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

.shell {
  display: grid;
  grid-template-columns: minmax(340px, 460px) minmax(0, 1fr);
  gap: 18px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0;
}

.workspace,
.result-panel {
  border: 1px solid var(--line);
  background: rgba(29, 27, 23, 0.94);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.26);
}

.workspace {
  padding: 22px;
}

.masthead,
.result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(30px, 5vw, 52px);
  line-height: 0.96;
}

h2 {
  font-size: 18px;
}

.status {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  padding: 7px 10px;
  color: var(--muted);
  font-size: 13px;
}

.status.busy {
  color: var(--accent-2);
}

.status.error {
  color: var(--danger);
}

.controls {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

label {
  color: var(--muted);
  font-size: 13px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0;
  background: #15130f;
  color: var(--text);
  outline: none;
}

input,
select {
  min-height: 44px;
  padding: 0 12px;
}

textarea {
  resize: vertical;
  min-height: 116px;
  padding: 12px;
  line-height: 1.55;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(40, 215, 180, 0.12);
}

.upload-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 132px;
  gap: 12px;
}

.upload-zone {
  display: grid;
  align-content: center;
  min-height: 132px;
  border: 1px dashed #665f4d;
  padding: 18px;
  background: #171510;
  cursor: pointer;
}

.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(40, 215, 180, 0.08);
}

.upload-zone input {
  display: none;
}

.upload-title {
  color: var(--text);
  font-size: 20px;
  font-weight: 800;
}

.upload-note {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.preview-box,
.result-stage {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    linear-gradient(45deg, #171510 25%, transparent 25%),
    linear-gradient(-45deg, #171510 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #171510 75%),
    linear-gradient(-45deg, transparent 75%, #171510 75%),
    #201d18;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
  background-size: 20px 20px;
}

.preview-box {
  width: 132px;
  aspect-ratio: 1;
}

.preview-box img,
.result-stage img {
  display: none;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.preview-box.has-image img,
.result-stage.has-image img {
  display: block;
}

.result-stage.compare-ready > #result-image {
  display: none;
}

.preview-box.has-image span,
.result-stage.has-image .empty-state {
  display: none;
}

#preview-empty,
.empty-state {
  color: var(--muted);
  font-size: 13px;
}

.compact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.primary {
  min-height: 50px;
  border: 0;
  background: var(--accent);
  color: #061713;
  font-weight: 900;
  cursor: pointer;
}

.primary:disabled {
  cursor: wait;
  opacity: 0.7;
}

.progress-panel {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  padding: 12px;
  background: #15130f;
}

.progress-panel[hidden] {
  display: none;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
}

.progress-panel.active .progress-meta span:first-child {
  color: var(--accent-2);
}

.progress-panel.complete .progress-meta span:first-child {
  color: var(--accent);
}

.progress-panel.error .progress-meta span:first-child {
  color: var(--danger);
}

.progress-track {
  position: relative;
  height: 8px;
  overflow: hidden;
  border: 1px solid #4a4336;
  background: #0f0d0a;
}

.progress-fill {
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 500ms ease;
}

.progress-panel.active .progress-fill {
  background-size: 180% 100%;
  animation: progress-shimmer 1.4s linear infinite;
}

.progress-panel.error .progress-fill {
  background: var(--danger);
}

.progress-note {
  min-height: 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.result-panel {
  display: grid;
  grid-template-rows: auto minmax(360px, 1fr) auto;
  min-height: calc(100vh - 56px);
  padding: 22px;
}

.result-head a {
  color: var(--accent);
  font-size: 14px;
  text-decoration: none;
  visibility: hidden;
}

.result-head a.ready {
  visibility: visible;
}

.result-stage {
  min-height: 360px;
}

.compare-viewer {
  --compare-position: 50%;
  position: absolute;
  inset: 0;
  display: block;
  cursor: ew-resize;
  touch-action: none;
  user-select: none;
  background: #0f0d0a;
}

.compare-viewer[hidden] {
  display: none;
}

.compare-image {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.compare-source {
  background: #0f0d0a;
}

.compare-result-wrap {
  position: absolute;
  inset: 0;
  clip-path: inset(0 calc(100% - var(--compare-position)) 0 0);
  overflow: hidden;
  border-right: 1px solid rgba(242, 238, 228, 0.82);
  box-shadow: 10px 0 26px rgba(0, 0, 0, 0.18);
}

.compare-result {
  width: 100%;
}

.compare-label {
  position: absolute;
  top: 14px;
  z-index: 2;
  border: 1px solid rgba(242, 238, 228, 0.18);
  padding: 5px 8px;
  background: rgba(15, 13, 10, 0.76);
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.compare-label-source {
  right: 14px;
}

.compare-label-result {
  left: 14px;
}

.compare-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--compare-position);
  z-index: 3;
  width: 44px;
  margin: 0 0 0 -22px;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: ew-resize;
}

.compare-handle::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: rgba(242, 238, 228, 0.92);
  box-shadow: 0 0 22px rgba(40, 215, 180, 0.34);
}

.compare-handle span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 36px;
  height: 36px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(242, 238, 228, 0.86);
  background:
    linear-gradient(90deg, transparent 42%, rgba(242, 238, 228, 0.94) 42% 58%, transparent 58%),
    rgba(15, 13, 10, 0.88);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.compare-handle:focus-visible span {
  outline: 3px solid rgba(40, 215, 180, 0.28);
  outline-offset: 3px;
}

.result-stage.is-generating .empty-state {
  display: none;
}

.result-waiting {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 14px;
  padding: 24px;
  background: rgba(18, 16, 13, 0.72);
  text-align: center;
}

.result-waiting[hidden] {
  display: none;
}

.scan-frame {
  width: min(240px, 62%);
  aspect-ratio: 4 / 3;
  border: 1px solid rgba(40, 215, 180, 0.76);
  background:
    linear-gradient(90deg, transparent, rgba(40, 215, 180, 0.34), transparent),
    rgba(40, 215, 180, 0.06);
  background-size: 220% 100%, auto;
  box-shadow: 0 0 36px rgba(40, 215, 180, 0.14);
  animation: scan-sweep 1.8s ease-in-out infinite;
}

.waiting-title {
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
}

.waiting-copy {
  max-width: 320px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.raw-output {
  max-height: 180px;
  margin: 14px 0 0;
  overflow: auto;
  border: 1px solid var(--line);
  padding: 12px;
  background: #12100d;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
}

@keyframes progress-shimmer {
  from {
    background-position: 0 0;
  }

  to {
    background-position: 180% 0;
  }
}

@keyframes scan-sweep {
  0%,
  100% {
    background-position: 220% 0, 0 0;
    opacity: 0.72;
  }

  50% {
    background-position: 0 0, 0 0;
    opacity: 1;
  }
}

@media (max-width: 840px) {
  .shell {
    grid-template-columns: 1fr;
    width: min(100% - 24px, 680px);
    padding: 12px 0;
  }

  .result-panel {
    min-height: 560px;
  }
}

@media (max-width: 520px) {
  .workspace,
  .result-panel {
    padding: 16px;
  }

  .masthead,
  .result-head,
  .upload-row,
  .compact-grid {
    grid-template-columns: 1fr;
  }

  .masthead,
  .result-head {
    display: grid;
  }

  .preview-box {
    width: 100%;
    max-height: 220px;
  }
}