:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #606a80;
  --text: #e6e8ec;
  --muted: #9aa1ad;
  --accent: #6ea8fe;
  --warn: #e0b341;
  --severe: #e0655a;
  --ok: #63c07a;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

header,
main,
footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
}

header h1 {
  margin-bottom: 0.25rem;
}

.tagline {
  color: var(--muted);
}

.tagline a {
  color: var(--accent);
}

h2 {
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.step-note {
  color: var(--muted);
  font-size: 0.9rem;
}

.example-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.example-card {
  text-align: left;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem;
  color: var(--text);
  cursor: pointer;
  font: inherit;
}

.example-card.selected {
  border-color: var(--accent);
}

.example-card h3 {
  margin: 0 0 0.25rem;
}

.example-card .category {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 0 0 0.5rem;
}

.example-card .look-for,
.example-card .unresolved-note {
  font-size: 0.85rem;
  color: var(--muted);
}

.citation {
  font-size: 0.8rem;
  color: var(--muted);
  border-left: 2px solid var(--border);
  padding-left: 0.75rem;
}

.custom-target {
  margin-top: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1rem;
}

.custom-target summary {
  cursor: pointer;
  font-weight: 600;
}

.custom-target h3 {
  font-size: 1rem;
  margin: 1rem 0 0.5rem;
}

.element-row,
.candidate-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.candidate-row {
  flex-direction: column;
  align-items: stretch;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem;
}

.candidate-row .element-rows {
  margin-left: 1rem;
}

.candidate-id-label {
  color: var(--muted);
  font-size: 0.85rem;
}

.element-symbol {
  width: 5rem;
}

.element-amount {
  width: 6rem;
}

.element-symbol,
.element-amount,
.candidate-id {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
  padding: 0.3rem 0.5rem;
  font: inherit;
}

.add-row-button {
  background: transparent;
  border: 1px dashed var(--border);
  color: var(--muted);
  border-radius: 4px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  margin-bottom: 0.75rem;
}

.remove-row-button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--severe);
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
  cursor: pointer;
}

#generate-custom {
  display: block;
  margin-top: 0.75rem;
  background: var(--accent);
  color: #0b0d12;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  cursor: pointer;
}

#generate {
  background: var(--accent);
  color: #0b0d12;
  border: none;
  border-radius: 6px;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  cursor: pointer;
}

.status {
  color: var(--warn);
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin: 1rem 0 0.5rem;
}

.tab-button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 6px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
}

.tab-button.active {
  color: var(--text);
  border-color: var(--accent);
}

.plan-card,
.rejection-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.plan-card .reaction {
  font-family: monospace;
  color: var(--accent);
}

.plan-card h4 {
  margin-bottom: 0.35rem;
}

.step {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  border-top: 1px solid var(--border);
  padding: 0.4rem 0;
  font-size: 0.9rem;
}

.step-requirement {
  min-width: 6rem;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.7rem;
  padding-top: 0.15rem;
}

.step-name {
  min-width: 6rem;
  font-weight: 600;
}

.step-fields {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.unresolved {
  color: var(--warn);
}

.severity-severe {
  color: var(--severe);
}

.severity-caution {
  color: var(--warn);
}

.severity-info {
  color: var(--muted);
}

.manual-review {
  color: var(--severe);
  font-weight: 600;
}

.reason-codes {
  color: var(--warn);
  font-family: monospace;
}

.raw-view h3 {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.copy-button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
  cursor: pointer;
}

.copy-feedback {
  font-size: 0.8rem;
  color: var(--ok);
  margin-left: 0.5rem;
}

pre {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.8rem;
  max-height: 480px;
}

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

.commercial-disclosure {
  color: var(--muted);
  font-size: 0.85rem;
  border-left: 2px solid var(--border);
  padding-left: 0.75rem;
  margin-bottom: 1rem;
}

.combination-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  margin-bottom: 0.6rem;
}

.combination-card h4 {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
}

.selection-row {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  padding: 0.25rem 0;
  border-top: 1px solid var(--border);
}

.selection-offer {
  font-weight: 600;
}

footer {
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

/* Below ~480px the .step row's three fixed-min-width columns (requirement
   label / step name / fields) get too cramped to read -- stack them
   instead of squeezing into three narrow columns. */
@media (max-width: 480px) {
  .step {
    flex-direction: column;
    gap: 0.15rem;
  }

  .step-requirement,
  .step-name {
    min-width: 0;
  }
}