/* Witness pairing surface (/witness → WitnessPage + PairWithWitnessSection).
 * Split out of components/proofs.css (P3 hygiene): these rules serve the
 * live witness-pairing flow, not the proof bench. Linked in index_app.html
 * alongside proofs.css. See docs/UX.md §Pairing, docs/STYLE-GUIDE §2 / §10.4. */

/* Witness pairing is a focused single-column flow, not the wide proof
 * bench — cap the surface narrower so the card + QR read centred
 * instead of hugging the left of an oversized column. */
.app-main:has(.witness-hero) {
  max-inline-size: 680px;
}

.witness-hero {
  min-height: 100dvh;
  padding: var(--space-6) var(--space-6) var(--space-12);
  color: var(--color-text-body);
  display: grid;
  align-content: start;
}

.witness-column {
  display: grid;
  width: 100%;
  gap: var(--space-5);
  text-align: left;
}

.witness-layout {
  display: grid;
  gap: var(--space-4);
  inline-size: 100%;
}

.pair-card {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--r-lg);
}

.pair-header {
  display: grid;
  gap: var(--space-2);
}

.pair-title {
  margin: 0;
  color: var(--color-text-heading);
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  line-height: 1.2;
}

.pair-helper {
  margin: 0;
  color: var(--color-text-body);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.pair-field {
  display: grid;
  gap: var(--space-2);
}

.pair-field-label {
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.3;
  text-transform: uppercase;
}

.pair-input {
  inline-size: 100%;
  min-block-size: 2.75rem;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-page);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--r-md);
  color: var(--color-text-heading);
  font: inherit;
}

.pair-input:focus {
  border-color: var(--color-primary-accent);
  outline: 2px solid var(--color-primary-bg);
  outline-offset: 2px;
}

.pair-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.pair-error {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-accent-bounded-subtle);
  border-inline-start: 3px solid var(--color-accent-bounded);
  border-radius: var(--r-md);
  color: var(--color-text-body);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.pair-result {
  display: grid;
  gap: var(--space-4);
  justify-items: center;
  padding-block-start: var(--space-2);
}

.pair-qr {
  inline-size: min(100%, 240px);
  padding: var(--space-3);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--r-md);
}

.pair-qr svg {
  display: block;
  inline-size: 100%;
  block-size: auto;
}

/* QR-trouble fallback: the URL lives here, collapsed by default so the
 * QR stays the single obvious affordance. */
.pair-fallback {
  inline-size: 100%;
}

.pair-fallback-summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.4;
  cursor: pointer;
  list-style: none;
  text-align: center;
  justify-content: center;
}

.pair-fallback-summary::-webkit-details-marker {
  display: none;
}

.pair-fallback-summary::before {
  content: "›";
  display: inline-block;
  color: var(--color-text-muted);
  transition: transform 120ms ease;
}

.pair-fallback[open] .pair-fallback-summary::before {
  transform: rotate(90deg);
}

.pair-fallback-summary:hover {
  color: var(--color-text-heading);
}

.pair-fallback-summary:focus-visible {
  outline: 2px solid var(--color-primary-accent);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

/* Quiet text button (succession ride-along dismiss). Mirrors the
 * fallback summary's muted register but is a real <button>, so it
 * carries no disclosure chevron and meets the input's hit-target floor. */
.pair-dismiss {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  min-block-size: 2.75rem;
  padding: var(--space-1) 0;
  background: none;
  border: 0;
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.4;
  text-align: start;
  cursor: pointer;
}

.pair-dismiss:hover {
  color: var(--color-text-heading);
}

.pair-dismiss:focus-visible {
  outline: 2px solid var(--color-primary-accent);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.pair-details {
  display: grid;
  gap: var(--space-2);
  inline-size: 100%;
  margin-block-start: var(--space-2);
  padding: var(--space-3);
  background: var(--color-bg-page);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--r-md);
}

.pair-detail-row {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  color: var(--color-text-body);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.pair-detail-row strong {
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  line-height: 1.3;
  text-transform: uppercase;
}

.pair-detail-row a,
.pair-detail-row code {
  color: var(--color-primary-text);
  font-family: var(--font-mono);
}

@media (max-width: 480px) {
  .witness-hero {
    padding: var(--space-5) var(--space-4) var(--space-8);
  }

  /* Stack the minted result's Share / Copy controls full-width so they
   * don't crowd on a narrow phone. */
  .pair-result .pair-actions {
    flex-direction: column;
    align-items: stretch;
  }
}