:root {
  color-scheme: light;
  --ink: #172026;
  --muted: #5f6f7a;
  --line: #d7e0e5;
  --panel: #ffffff;
  --soft: #eef5f2;
  --accent: #1d6b64;
  --accent-strong: #124d48;
  --gold: #b27716;
  --danger: #9b2c2c;
  --shadow: 0 18px 45px rgba(23, 32, 38, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: #f5f7f3;
}

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

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 410px);
  gap: 24px;
  align-items: end;
  padding: 26px 0 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 4vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 720px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.6;
}

.integrity-note {
  border-left: 5px solid var(--accent);
  background: #fffaf0;
  padding: 16px 18px;
  line-height: 1.5;
}

.workspace {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.form-panel {
  position: sticky;
  top: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 20px;
}

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

label,
legend {
  color: #26343b;
  font-size: 0.9rem;
  font-weight: 700;
}

textarea,
select,
input[type="number"] {
  width: 100%;
  border: 1px solid #bccbd2;
  border-radius: 8px;
  background: #fbfdfc;
  color: var(--ink);
  padding: 11px 12px;
  outline: none;
}

textarea:focus,
select:focus,
input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29, 107, 100, 0.16);
}

.citation-field {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  border: 0;
  padding: 0;
  margin: 0;
}

.citation-field legend {
  grid-column: 1 / -1;
  margin-bottom: 2px;
}

.radio-card {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  border: 1px solid #bccbd2;
  border-radius: 8px;
  padding: 10px;
  cursor: pointer;
}

.radio-card:has(input:checked) {
  border-color: var(--accent);
  background: var(--soft);
}

.actions {
  display: grid;
  gap: 10px;
}

button {
  min-height: 46px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: var(--accent-strong);
}

button:disabled {
  cursor: wait;
  opacity: 0.7;
}

button.secondary {
  border: 1px solid #b9c7cd;
  background: #ffffff;
  color: var(--ink);
}

button.secondary:hover {
  background: #eef5f2;
}

.results-panel {
  min-height: 620px;
  padding: 24px;
}

.empty-state,
.loading-state,
.error-state {
  display: grid;
  min-height: 520px;
  place-items: center;
  text-align: center;
  color: var(--muted);
}

.empty-state h2 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 1.6rem;
}

.empty-state p,
.loading-state p {
  max-width: 440px;
  margin: 0;
  line-height: 1.6;
}

.spinner {
  width: 42px;
  height: 42px;
  margin: 0 auto 18px;
  border: 4px solid #d7e0e5;
  border-top-color: var(--accent);
  border-radius: 999px;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.hidden {
  display: none !important;
}

.results {
  line-height: 1.6;
}

.results h2 {
  margin: 0 0 12px;
  font-size: 1.7rem;
}

.results h3 {
  margin: 28px 0 10px;
  font-size: 1.2rem;
}

.term-list,
.outline-list {
  margin: 0;
  padding-left: 22px;
}

.source-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  margin: 16px 0;
  background: #fbfdfc;
}

.source-card h4 {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 14px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border: 1px solid #cdd8dd;
  border-radius: 999px;
  padding: 4px 10px;
  color: #31424a;
  background: #ffffff;
  font-size: 0.84rem;
}

.detail-grid {
  display: grid;
  gap: 12px;
}

.detail {
  border-top: 1px solid #e3eaed;
  padding-top: 10px;
}

.detail strong {
  display: block;
  margin-bottom: 3px;
}

.citation {
  background: #fffaf0;
  border-left: 4px solid var(--gold);
  padding: 12px;
}

.error-state {
  color: var(--danger);
  font-weight: 700;
}

a {
  color: var(--accent-strong);
}

@media (max-width: 900px) {
  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }

  .form-panel {
    position: static;
  }
}

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

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

  .hero,
  .form-panel,
  .empty-state,
  .loading-state,
  .error-state {
    display: none !important;
  }

  .workspace {
    display: block;
  }

  .panel,
  .source-card {
    box-shadow: none;
    border-color: #cccccc;
  }

  .results-panel {
    padding: 0;
    border: 0;
  }
}