:root {
  --bg: #f5f0e8;
  --panel: rgba(255, 252, 247, 0.86);
  --panel-strong: rgba(255, 250, 244, 0.96);
  --line: rgba(61, 45, 34, 0.14);
  --text: #2f241d;
  --muted: #715d4c;
  --brand: #a64b2a;
  --brand-deep: #6f2f18;
  --accent: #2f6e63;
  --warning: #8e5a00;
  --shadow: 0 18px 45px rgba(64, 41, 24, 0.1);
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --sans: "Avenir Next", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(166, 75, 42, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(47, 110, 99, 0.16), transparent 24%),
    linear-gradient(180deg, #fbf7f0 0%, #efe5d8 100%);
}

.page-shell {
  max-width: 1560px;
  margin: 0 auto;
  padding: 28px 24px 36px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  margin-bottom: 24px;
  padding: 28px 30px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(255, 250, 244, 0.95), rgba(247, 236, 223, 0.9));
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  color: var(--brand);
}

.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(38px, 5vw, 62px);
  line-height: 0.98;
}

.hero-text {
  max-width: 700px;
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.hero-meta {
  display: grid;
  align-content: start;
  gap: 10px;
}

.stage-chip,
.provider-badge,
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.stage-chip {
  background: rgba(166, 75, 42, 0.12);
  color: var(--brand-deep);
}

.provider-badge {
  background: rgba(47, 110, 99, 0.12);
  color: var(--accent);
}

.workspace-layout {
  display: grid;
  grid-template-columns: 420px minmax(0, 1fr);
  gap: 20px;
}

.sidebar,
.main-panel {
  display: grid;
  gap: 18px;
  align-content: start;
}

.panel {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: 0 12px 26px rgba(61, 45, 34, 0.06);
  backdrop-filter: blur(10px);
}

.panel-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.panel h2,
.panel h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
}

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

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.field span {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

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

input,
textarea,
select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(61, 45, 34, 0.16);
  border-radius: var(--radius-sm);
  background: var(--panel-strong);
  color: var(--text);
}

textarea {
  resize: vertical;
  min-height: 48px;
}

button {
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, opacity 140ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.primary-button,
.artifact-card .generate-button {
  background: linear-gradient(135deg, var(--brand), #c77754);
  color: #fffaf6;
  box-shadow: 0 12px 24px rgba(166, 75, 42, 0.2);
}

.secondary-button,
.ghost-button,
.card-action {
  padding: 10px 14px;
  background: rgba(255, 250, 244, 0.9);
  border: 1px solid rgba(61, 45, 34, 0.12);
  color: var(--text);
}

.tab-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.tab-button {
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(255, 250, 244, 0.82);
  border: 1px solid transparent;
  color: var(--muted);
  font-weight: 700;
}

.tab-button.active {
  background: rgba(166, 75, 42, 0.12);
  border-color: rgba(166, 75, 42, 0.24);
  color: var(--brand-deep);
}

.artifact-grid {
  display: grid;
  gap: 16px;
}

.artifact-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 252, 247, 0.95);
}

.artifact-card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
  margin-bottom: 14px;
}

.artifact-card h3 {
  margin: 0 0 6px;
  font-size: 24px;
}

.artifact-meta {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.artifact-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.artifact-card .generate-button {
  padding: 11px 16px;
}

.card-action {
  font-size: 13px;
}

.artifact-output {
  display: grid;
  gap: 14px;
}

.output-block {
  padding: 14px;
  border-radius: 14px;
  background: rgba(244, 236, 227, 0.65);
  border: 1px solid rgba(61, 45, 34, 0.08);
}

.output-block pre {
  white-space: pre-wrap;
  margin: 0;
  font-family: "SFMono-Regular", "SFMono", "Roboto Mono", Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
}

.output-block ul {
  margin: 0;
  padding-left: 18px;
}

.placeholder {
  color: var(--muted);
  font-size: 14px;
}

.status-badge.pass {
  background: rgba(47, 110, 99, 0.12);
  color: var(--accent);
}

.status-badge.warn {
  background: rgba(142, 90, 0, 0.14);
  color: var(--warning);
}

.status-badge.fail {
  background: rgba(143, 48, 56, 0.14);
  color: #8f3038;
}

.keyword-groups {
  display: grid;
  gap: 10px;
}

.keyword-group {
  border: 1px solid rgba(61, 45, 34, 0.1);
  border-radius: 14px;
  background: rgba(255, 252, 247, 0.72);
  overflow: hidden;
}

.keyword-group summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 700;
  color: var(--text);
}

.keyword-group summary::-webkit-details-marker {
  display: none;
}

.keyword-group-body {
  display: grid;
  gap: 10px;
  padding: 0 16px 16px;
}

.term-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 120px 44px;
  gap: 8px;
}

.term-row input,
.term-row select {
  min-width: 0;
}

.term-meta {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.custom-term-form,
.artifact-actions {
  align-items: center;
}

.custom-term-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px 88px;
  gap: 8px;
  margin-bottom: 16px;
}

.bullet-inputs {
  display: grid;
  gap: 10px;
}

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

.history-card {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 252, 247, 0.94);
}

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

.history-card h4 {
  margin: 0;
  font-size: 16px;
}

.history-card p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.history-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.source-version {
  font-size: 12px;
  color: var(--muted);
}

.hidden {
  display: none;
}

@media (max-width: 1120px) {
  .workspace-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .page-shell {
    padding: 16px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .custom-term-form,
  .term-row {
    grid-template-columns: 1fr;
  }

  .artifact-card-header {
    flex-direction: column;
  }
}