:root {
  color-scheme: light;
  --bg: #f4efe4;
  --bg-accent: #efe2c5;
  --panel: rgba(255, 252, 246, 0.94);
  --panel-strong: #fffdf8;
  --line: rgba(74, 57, 29, 0.16);
  --line-strong: rgba(74, 57, 29, 0.28);
  --text: #2a2114;
  --muted: #6d5e47;
  --brand: #0f766e;
  --brand-strong: #115e59;
  --danger: #b91c1c;
  --shadow: 0 20px 60px rgba(78, 54, 19, 0.12);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  font-family: "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.92), transparent 38%),
    radial-gradient(circle at bottom right, rgba(15, 118, 110, 0.14), transparent 26%),
    linear-gradient(140deg, var(--bg) 0%, var(--bg-accent) 100%);
  overflow: hidden;
}

button,
input {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 24px;
  height: 100vh;
  padding: 24px;
}

.control-panel,
.preview-panel {
  min-width: 0;
}

.control-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  padding-right: 6px;
}

.control-panel::-webkit-scrollbar,
.preview-panel::-webkit-scrollbar,
.result-list::-webkit-scrollbar,
.raw-response::-webkit-scrollbar {
  width: 10px;
}

.control-panel::-webkit-scrollbar-thumb,
.preview-panel::-webkit-scrollbar-thumb,
.result-list::-webkit-scrollbar-thumb,
.raw-response::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(74, 57, 29, 0.18);
}

.panel-header,
.control-card,
.preview-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.panel-header {
  padding: 24px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand);
}

.panel-header h1 {
  margin: 0;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.05;
}

.panel-copy {
  margin: 14px 0 0;
  line-height: 1.6;
  color: var(--muted);
}

.mode-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 16px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
}

.mode-button {
  padding: 10px 16px;
  color: var(--muted);
  background: transparent;
}

.mode-button.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #0ea5a0);
}

.control-card,
.preview-card {
  padding: 16px;
}

.control-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mode-panel.is-hidden,
.preview-legend.is-hidden {
  display: none;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field span,
.section-title-row h2 {
  font-size: 14px;
  font-weight: 700;
}

.field input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--text);
  background: rgba(255, 255, 255, 0.72);
}

.field input:focus {
  outline: 2px solid rgba(15, 118, 110, 0.15);
  border-color: var(--brand);
}

.upload-zone {
  display: grid;
  place-items: center;
  gap: 6px;
  min-height: 124px;
  padding: 16px;
  border: 1.5px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(255, 248, 235, 0.9)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.06), rgba(245, 158, 11, 0.08));
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
  text-align: center;
}

.upload-zone:focus-visible {
  outline: 2px solid rgba(15, 118, 110, 0.22);
  outline-offset: 3px;
  border-color: var(--brand);
}

.upload-zone:hover {
  transform: translateY(-1px);
  border-color: var(--brand);
  box-shadow: 0 14px 30px rgba(15, 118, 110, 0.08);
}

.upload-zone.is-ready {
  border-color: rgba(15, 118, 110, 0.42);
  box-shadow: 0 14px 30px rgba(15, 118, 110, 0.12);
}

.upload-zone.is-busy {
  opacity: 0.78;
}

.upload-title {
  font-size: 18px;
  font-weight: 700;
}

.upload-copy {
  font-size: 12px;
  color: var(--muted);
}

.button-row {
  display: grid;
  grid-template-columns: 1fr 112px;
  gap: 10px;
}

.eval-button-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

button {
  border: 0;
  border-radius: 999px;
  padding: 10px 16px;
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease, background 140ms ease;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.56;
  transform: none;
}

#analyze-button {
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #0ea5a0);
}

.button-secondary {
  color: var(--text);
  background: rgba(74, 57, 29, 0.08);
}

.button-tertiary {
  padding: 8px 12px;
  color: var(--muted);
  background: rgba(74, 57, 29, 0.06);
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.meta-card {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.55);
}

.metric-card {
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(255, 251, 241, 0.9)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.05), rgba(245, 158, 11, 0.08));
}

.metric-card:hover,
.metric-card.is-active {
  border-color: rgba(15, 118, 110, 0.48);
  box-shadow: 0 10px 22px rgba(15, 118, 110, 0.08);
}

.metric-card.is-active {
  background:
    linear-gradient(180deg, rgba(240, 253, 250, 0.96), rgba(255, 251, 241, 0.94)),
    linear-gradient(135deg, rgba(15, 118, 110, 0.13), rgba(245, 158, 11, 0.1));
}

.meta-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.meta-card strong,
.metric-card strong {
  display: block;
  margin-top: 6px;
  font-size: 14px;
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.section-title-row h2 {
  margin: 0;
}

.section-title-row span {
  font-size: 12px;
  color: var(--muted);
  text-align: right;
}

.result-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 320px;
  overflow: auto;
}

#eval-sample-list {
  max-height: calc(100vh - 520px);
  min-height: 220px;
}

.empty-state {
  color: var(--muted);
  line-height: 1.6;
}

.result-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel-strong);
  cursor: pointer;
  transition: border-color 140ms ease, transform 140ms ease, box-shadow 140ms ease;
}

.result-item:hover,
.result-item.is-active {
  transform: translateY(-1px);
  border-color: var(--brand);
  box-shadow: 0 12px 24px rgba(15, 118, 110, 0.08);
}

.result-item header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.result-item strong {
  font-size: 13px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
}

.eval-badge {
  background: linear-gradient(135deg, #7c3aed, #0891b2);
}

.usable-badge {
  background: linear-gradient(135deg, #15803d, #0f766e);
}

.error-badge {
  background: linear-gradient(135deg, #dc2626, #b91c1c);
}

.result-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  font-size: 11px;
  color: var(--muted);
}

.result-meta code {
  font-size: 11px;
  white-space: nowrap;
}

.result-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 2px;
  font-size: 11px;
  color: var(--muted);
}

.result-item.is-manually-usable {
  border-color: rgba(21, 128, 61, 0.28);
  background:
    linear-gradient(180deg, rgba(240, 253, 244, 0.78), rgba(255, 253, 249, 0.96)),
    var(--panel-strong);
}

.result-item.is-request-failed {
  border-color: rgba(220, 38, 38, 0.3);
  background:
    linear-gradient(180deg, rgba(254, 242, 242, 0.82), rgba(255, 253, 249, 0.96)),
    var(--panel-strong);
}

.result-error {
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 11px;
  line-height: 1.5;
  color: #991b1b;
  background: rgba(220, 38, 38, 0.1);
}

.manual-usable-button {
  padding: 6px 10px;
  font-size: 11px;
}

.raw-response {
  margin: 0;
  max-height: 280px;
  overflow: auto;
  padding: 14px;
  border-radius: var(--radius-md);
  background: #211c14;
  color: #f8f5ef;
  font-family: "SFMono-Regular", "Menlo", monospace;
  font-size: 12px;
  line-height: 1.6;
}

.preview-panel {
  display: flex;
  height: calc(100vh - 48px);
  overflow-y: auto;
  padding-right: 6px;
}

.preview-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-height: 0;
}

.eval-preview-panel {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.eval-preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.eval-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.eval-diff-toggle {
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-chip {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
}

.filter-chip.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), #0ea5a0);
  border-color: transparent;
}

.eval-preview-summary,
.eval-diff-list {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.62);
}

.eval-summary-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--muted);
}

.eval-summary-head.compact {
  justify-content: flex-start;
  gap: 8px;
}

.eval-summary-head strong {
  font-size: 14px;
  color: var(--text);
  margin-right: 4px;
}

.eval-summary-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.summary-chip,
.diff-tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.summary-chip.is-miss,
.diff-tag.is-miss {
  color: #991b1b;
  background: rgba(220, 38, 38, 0.14);
}

.summary-chip.is-extra,
.diff-tag.is-extra {
  color: #9a3412;
  background: rgba(249, 115, 22, 0.16);
}

.summary-chip.is-label,
.diff-tag.is-label {
  color: #5b21b6;
  background: rgba(124, 58, 237, 0.16);
}

.summary-chip.is-iou,
.diff-tag.is-iou {
  color: #92400e;
  background: rgba(217, 119, 6, 0.16);
}

.summary-chip.is-correct,
.diff-tag.is-correct {
  color: #166534;
  background: rgba(22, 163, 74, 0.14);
}

.eval-summary-filter {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
}

.eval-diff-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.eval-diff-list.is-collapsed {
  display: none;
}

.diff-item {
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 253, 249, 0.88);
}

.diff-item.is-miss {
  border-color: rgba(220, 38, 38, 0.22);
}

.diff-item.is-extra {
  border-color: rgba(249, 115, 22, 0.24);
}

.diff-item.is-label {
  border-color: rgba(124, 58, 237, 0.24);
}

.diff-item.is-iou {
  border-color: rgba(217, 119, 6, 0.24);
}

.diff-item-head {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.diff-item-head strong {
  font-size: 13px;
}

.diff-item-meta {
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.stage-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: calc(100vh - 140px);
  margin-top: 14px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(255, 250, 241, 0.92)),
    linear-gradient(90deg, rgba(74, 57, 29, 0.03) 1px, transparent 1px),
    linear-gradient(rgba(74, 57, 29, 0.03) 1px, transparent 1px);
  background-size: auto, 24px 24px, 24px 24px;
  overflow-x: auto;
  overflow-y: visible;
}

#preview-canvas {
  display: none;
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 22px 40px rgba(68, 50, 16, 0.16);
}

.stage-empty #preview-canvas {
  display: none;
}

.stage-ready #preview-canvas {
  display: block;
}

.stage-placeholder {
  display: grid;
  gap: 6px;
  justify-items: center;
  color: var(--muted);
  text-align: center;
}

.stage-placeholder p {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.stage-ready .stage-placeholder {
  display: none;
}

.preview-legend {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--muted);
}

.preview-legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend-swatch {
  display: inline-block;
  width: 18px;
  height: 10px;
  border-radius: 999px;
}

.legend-swatch.is-ground-truth {
  border: 2px dashed #15803d;
  background: rgba(21, 128, 61, 0.1);
}

.legend-swatch.is-prediction {
  border: 2px solid #2563eb;
  background: rgba(37, 99, 235, 0.12);
}

.legend-swatch.is-miss {
  border: 2px dashed #dc2626;
  background: rgba(220, 38, 38, 0.14);
}

.legend-swatch.is-extra {
  border: 2px solid #f97316;
  background: rgba(249, 115, 22, 0.16);
}

.legend-swatch.is-label {
  border: 2px solid #7c3aed;
  background: rgba(124, 58, 237, 0.16);
}

.legend-swatch.is-iou {
  border: 2px solid #d97706;
  background: rgba(217, 119, 6, 0.16);
}

.legend-swatch.is-correct {
  border: 2px solid rgba(21, 128, 61, 0.32);
  background: rgba(21, 128, 61, 0.06);
}

@media (max-width: 1080px) {
  body {
    height: auto;
    overflow: auto;
  }

  .app-shell {
    grid-template-columns: 1fr;
    height: auto;
  }

  .control-panel,
  .preview-panel {
    max-height: none;
    height: auto;
    overflow: visible;
    padding-right: 0;
  }

  .stage-frame {
    min-height: 560px;
  }
}

@media (max-width: 640px) {
  body {
    background:
      radial-gradient(circle at top, rgba(255, 255, 255, 0.9), transparent 34%),
      linear-gradient(160deg, var(--bg) 0%, var(--bg-accent) 100%);
  }

  .app-shell {
    gap: 16px;
    padding: 16px;
  }

  .panel-header,
  .control-card,
  .preview-card {
    border-radius: 20px;
  }

  .button-row,
  .meta-grid,
  .metrics-grid,
  .result-meta {
    grid-template-columns: 1fr;
  }

  .eval-preview-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .eval-diff-toggle {
    width: 100%;
  }

  .eval-summary-head {
    align-items: flex-start;
    flex-direction: column;
  }

  #eval-sample-list {
    max-height: 320px;
    min-height: 0;
  }

  .stage-frame {
    min-height: 420px;
    padding: 16px;
  }
}