:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef3f8;
  --line: #dbe3ec;
  --ink: #111827;
  --muted: #64748b;
  --soft: #94a3b8;
  --primary: #0f172a;
  --blue: #0071e3;
  --green: #16a34a;
  --orange: #ea580c;
  --radius: 8px;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, rgba(0, 113, 227, 0.12), transparent 28rem),
    linear-gradient(180deg, #fbfcff 0%, var(--bg) 38%, #ffffff 100%);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 42px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(219, 227, 236, 0.8);
  backdrop-filter: blur(20px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: #fff;
  background: var(--primary);
  border-radius: 8px;
  font-size: 0.9rem;
}

.topbar-actions,
.report-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(24px, 5vw, 58px) 0 64px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 440px);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  min-height: 360px;
}

.workspace-copy {
  max-width: 660px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.workspace-copy p:last-child {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.75;
}

.analysis-panel,
.progress-card,
.error-card,
.history-card,
.report-shell {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(219, 227, 236, 0.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.analysis-panel {
  display: grid;
  gap: 16px;
  padding: 22px;
}

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

.field span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
}

.field input,
.field select {
  width: 100%;
  min-height: 46px;
  padding: 0 13px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  outline: none;
}

.field input:focus,
.field select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

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

.field-note {
  margin: 0;
  color: var(--soft);
  font-size: 0.82rem;
  line-height: 1.6;
}

.primary-button,
.secondary-button,
.ghost-button,
.text-button {
  min-height: 42px;
  padding: 0 16px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 700;
  text-decoration: none;
}

.primary-button {
  color: #fff;
  background: var(--primary);
}

.primary-button:hover {
  background: #1f2937;
}

.primary-button:disabled,
.ghost-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.primary-button.compact {
  min-height: 38px;
}

.secondary-button,
.ghost-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: #fff;
  border-color: var(--line);
}

.secondary-button:hover,
.ghost-button:hover {
  border-color: var(--primary);
}

.text-button {
  min-height: 32px;
  padding: 0;
  color: var(--muted);
  background: transparent;
}

.progress-card,
.error-card,
.history-card,
.report-actions {
  margin-top: 18px;
}

.progress-card,
.error-card,
.history-card {
  padding: 18px;
}

.progress-head,
.history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.progress-head span {
  color: var(--muted);
  font-size: 0.9rem;
}

.progress-bar {
  height: 8px;
  margin: 14px 0;
  overflow: hidden;
  background: var(--surface-soft);
  border-radius: 999px;
}

.progress-bar span {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--green));
  transition: width 0.25s ease;
}

.progress-log {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.progress-log span {
  display: block;
  padding: 8px 10px;
  background: #f8fafc;
  border-radius: var(--radius);
}

.error-card {
  border-color: #fecaca;
  background: #fff7f7;
}

.error-card p {
  margin: 8px 0 0;
  color: #b91c1c;
}

.report-actions {
  justify-content: flex-end;
  padding: 14px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(219, 227, 236, 0.9);
  border-radius: var(--radius);
}

.report-shell {
  margin-top: 18px;
  padding: clamp(22px, 4vw, 42px);
}

.report-cover {
  display: grid;
  gap: 18px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.report-cover h2 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.report-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  color: var(--muted);
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 650;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.metric {
  padding: 14px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.metric strong {
  display: block;
  font-size: 1.65rem;
}

.metric span {
  color: var(--muted);
  font-size: 0.85rem;
}

.report-section {
  padding: 28px 0 0;
}

.report-section h3 {
  margin: 0 0 16px;
  font-size: 1.35rem;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.panel {
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel h4 {
  margin: 0 0 12px;
  font-size: 1rem;
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: 12px;
}

.swatch {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.swatch-color {
  height: 58px;
}

.swatch span {
  display: block;
  padding: 8px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.75rem;
}

.data-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.data-list li,
.page-row,
.recommendation {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid #edf2f7;
}

.data-list li:last-child,
.page-row:last-child,
.recommendation:last-child {
  border-bottom: 0;
}

.data-list b {
  color: var(--muted);
  font-weight: 650;
}

.page-row {
  align-items: flex-start;
}

.page-row a {
  color: var(--blue);
  text-decoration: none;
  word-break: break-all;
}

.page-row small {
  display: block;
  margin-top: 3px;
  color: var(--soft);
}

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

.tag {
  padding: 6px 10px;
  color: var(--primary);
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 650;
}

.recommendation {
  display: grid;
  grid-template-columns: 110px 1fr;
}

.recommendation strong {
  color: var(--orange);
}

.visual-brief,
.asset-layout {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 14px;
}

.brief-board {
  padding: 14px;
  background: #0f172a;
  border-radius: var(--radius);
}

.brief-screen {
  min-height: 246px;
  padding: 14px;
  background: #fff;
  border-radius: 6px;
}

.brief-nav {
  height: 18px;
  margin-bottom: 18px;
  background: linear-gradient(90deg, #111827 0 18%, #e2e8f0 18% 22%, #e2e8f0 52%, transparent 52%);
  border-radius: 999px;
}

.brief-hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 12px;
  margin-bottom: 12px;
}

.brief-hero span,
.brief-hero i,
.brief-grid b {
  display: block;
  min-height: 92px;
  border-radius: 6px;
}

.brief-hero i {
  min-height: 92px;
}

.brief-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.brief-grid b {
  min-height: 46px;
  opacity: 0.72;
}

.snapshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.snapshot-card {
  display: grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 12px;
  padding: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.snapshot-window {
  overflow: hidden;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.snapshot-top {
  display: flex;
  gap: 5px;
  padding: 8px;
  background: #e5e7eb;
}

.snapshot-top span {
  width: 7px;
  height: 7px;
  background: #94a3b8;
  border-radius: 50%;
}

.snapshot-canvas {
  display: grid;
  gap: 7px;
  padding: 9px;
}

.snapshot-section {
  position: relative;
  display: grid;
  gap: 5px;
  min-height: 42px;
  padding: 8px;
  background: #fff;
  border: 1px solid #edf2f7;
  border-radius: 6px;
}

.snapshot-section.is-hero {
  min-height: 72px;
  background: linear-gradient(135deg, #eff6ff, #fff);
}

.snapshot-section b,
.snapshot-section span,
.snapshot-section i {
  display: block;
  height: 7px;
  background: #cbd5e1;
  border-radius: 999px;
}

.snapshot-section b {
  width: 54%;
  background: #111827;
}

.snapshot-section i {
  width: 42%;
}

.snapshot-section em {
  position: absolute;
  right: 8px;
  bottom: 8px;
  width: 28px;
  height: 22px;
  background: #bfdbfe;
  border-radius: 5px;
}

.snapshot-info strong,
.snapshot-info small {
  display: block;
}

.snapshot-info small {
  margin: 4px 0 8px;
  color: var(--muted);
  word-break: break-all;
}

.snapshot-info ol {
  display: grid;
  gap: 5px;
  margin: 10px 0 0;
  padding-left: 0;
  list-style: none;
  color: var(--muted);
  font-size: 0.8rem;
}

.snapshot-info li b {
  margin-right: 6px;
  color: var(--blue);
}

.tag-row.compact .tag {
  padding: 4px 8px;
  font-size: 0.72rem;
}

.palette-strip {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  overflow: hidden;
  min-height: 70px;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.palette-strip span {
  min-height: 70px;
}

.swatch small {
  display: block;
  padding: 0 8px 8px;
  color: var(--soft);
  font-size: 0.72rem;
}

.type-specimen-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.type-specimen {
  display: grid;
  gap: 8px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.type-specimen small,
.type-specimen span {
  color: var(--muted);
}

.type-specimen strong {
  font-size: 1.5rem;
  line-height: 1.18;
  letter-spacing: 0;
}

.report-subgrid {
  margin-top: 14px;
}

.size-ladder {
  display: grid;
  gap: 10px;
}

.size-ladder span {
  display: block;
  line-height: 1.2;
  word-break: keep-all;
}

.button-board,
.icon-board,
.image-board {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button-sample {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--primary);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}

.button-sample.ghost {
  color: var(--primary);
  background: #fff;
  border-color: var(--line);
}

.icon-sample {
  display: grid;
  width: 76px;
  min-height: 76px;
  place-items: center;
  gap: 5px;
  padding: 8px;
  color: var(--primary);
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
}

.icon-sample svg,
.icon-sample img,
.svg-symbol {
  width: 28px;
  height: 28px;
}

.icon-sample img {
  object-fit: contain;
}

.svg-symbol {
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--primary);
  border-radius: 7px;
  font-size: 0.62rem;
}

.icon-sample small {
  max-width: 100%;
  color: var(--muted);
  font-size: 0.62rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.image-board {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.image-board figure {
  overflow: hidden;
  margin: 0;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.image-board img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: #e2e8f0;
}

.image-board figcaption {
  padding: 8px;
  color: var(--muted);
  font-size: 0.75rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.image-board figure.is-broken img {
  display: none;
}

.history-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.history-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.history-item button {
  min-height: 34px;
  padding: 0 12px;
}

.history-item strong,
.history-item span {
  display: block;
}

.history-item span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.85rem;
  word-break: break-all;
}

.empty {
  color: var(--soft);
}

[hidden] {
  display: none !important;
}

@media (max-width: 820px) {
  .workspace,
  .two-col,
  .metric-grid,
  .visual-brief,
  .asset-layout,
  .snapshot-card {
    grid-template-columns: 1fr;
  }

  .settings-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
  }

  .topbar-actions {
    justify-content: flex-end;
  }
}

@media print {
  body {
    background: #fff;
  }

  .topbar,
  .workspace,
  .progress-card,
  .error-card,
  .history-card,
  .report-actions {
    display: none !important;
  }

  .app-shell {
    width: 100%;
    padding: 0;
  }

  .report-shell {
    box-shadow: none;
    border: 0;
    margin: 0;
    padding: 0;
  }

  .report-section {
    break-inside: avoid;
  }
}