/* ============================================================
   Consent gate — first-visit overlay shown on /, /chat/ and
   /api-docs until the visitor accepts. /privacy stays open so
   the policy can actually be read first.
   ============================================================ */
.consent-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-consent);
  display: grid;
  place-items: center;
  padding: var(--sp-6);
  background: var(--scrim);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-slow) var(--ease);
}
.consent-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

.consent-card {
  width: min(var(--modal-w), 100%);
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  box-shadow: var(--e3);
  padding: var(--sp-6);
  animation: consentIn var(--dur-slow) var(--ease);
}
@keyframes consentIn {
  from { opacity: 0; transform: translateY(12px) scale(0.97); }
  to { opacity: 1; transform: none; }
}
.consent-card h2 {
  font-size: var(--fs-h2);
  line-height: var(--lh-h2);
  letter-spacing: var(--tr-h2);
  font-weight: var(--wt-semi);
  margin: 0 0 var(--sp-3);
}
.consent-card p {
  color: var(--text-dim);
  font-size: var(--fs-sm);
  line-height: var(--lh-sm);
  margin: 0 0 var(--sp-3);
}
.consent-card .consent-link {
  margin-bottom: var(--sp-5);
}
.consent-card .consent-link a {
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: text-decoration-thickness var(--dur) var(--ease);
}
.consent-card .consent-link a:hover {
  text-decoration-thickness: 2px;
}

.consent-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-2);
}
.consent-ok {
  background: var(--accent);
  color: var(--on-accent);
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  padding: var(--sp-2) var(--sp-5);
  font: var(--wt-medium) var(--fs-sm) / 1 var(--font);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.consent-ok:hover { background: var(--accent-strong); }
.consent-ok:active { transform: translateY(1px); }
/* Focus ring comes from the global :focus-visible contract in tokens.css. */

body.consent-open { overflow: hidden; }
body.consent-open .main,
body.consent-open #msgs { overflow: hidden; }