/* App-local Core UI Kit: responsive authentication shell shared by web/PWA/desktop. */
html { min-height: 100%; background: var(--cui-canvas); }
body.cui-auth-page {
  min-height: 100dvh; margin: 0; padding: max(24px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom))
    max(18px, env(safe-area-inset-left));
  display: grid; place-items: center; overflow-x: hidden;
  background:
    radial-gradient(circle at 15% 10%, color-mix(in srgb, var(--cui-accent) 12%, transparent), transparent 38%),
    radial-gradient(circle at 85% 90%, color-mix(in srgb, var(--cui-accent) 8%, transparent), transparent 42%),
    var(--cui-canvas);
}
.cui-auth-shell { width: min(100%, 430px); display: flex; flex-direction: column; gap: 16px; }
.cui-auth-brand { display: flex; flex-direction: column; align-items: center; gap: 8px; text-align: center; }
.cui-auth-logo { width: 58px; height: 58px; border-radius: 17px; box-shadow: var(--cui-shadow-sm); }
.cui-auth-brand h1 { margin: 2px 0 0; color: var(--cui-text); font-size: 24px; line-height: 1.2; }
.cui-auth-brand p { margin: 0; color: var(--cui-muted); font-size: 13px; }
.cui-auth-provider { width: 100%; }
.cui-auth-provider .ca-panel { margin-inline: auto; }
.cui-auth-divider { display: flex; align-items: center; gap: 12px; color: var(--cui-muted);
  font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
.cui-auth-divider::before, .cui-auth-divider::after { content: ""; flex: 1; height: 1px; background: var(--cui-line); }
.cui-auth-local { width: 100%; border: 1px solid var(--cui-line); border-radius: 16px;
  background: var(--cui-panel); box-shadow: var(--cui-shadow-sm); overflow: hidden; }
.cui-auth-local > summary { min-height: 48px; display: flex; align-items: center; gap: 10px;
  padding: 0 17px; color: var(--cui-text); font-weight: 650; cursor: pointer; list-style: none; }
.cui-auth-local > summary::-webkit-details-marker { display: none; }
.cui-auth-chevron { width: 18px; height: 18px; margin-left: auto; fill: none; stroke: currentColor;
  stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
  opacity: .65; }
.cui-auth-local[open] > summary { border-bottom: 1px solid var(--cui-line); }
.cui-auth-local__body { padding: 16px; }
.cui-auth-form { display: flex; flex-direction: column; gap: 12px; }
.cui-auth-field { display: flex; flex-direction: column; gap: 5px; color: var(--cui-muted); font-size: 12px; }
.cui-auth-field input { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid var(--cui-line);
  border-radius: 11px; outline: none; background: var(--cui-surface-inset); color: var(--cui-text);
  font: inherit; transition: border-color .15s ease, box-shadow .15s ease, background .15s ease; }
.cui-auth-field input::placeholder { color: var(--cui-dim); }
.cui-auth-field input:focus { border-color: var(--cui-accent);
  box-shadow: 0 0 0 3px var(--cui-accent-soft); background: var(--cui-surface); }
.cui-auth-submit { min-height: 44px; border: 0; border-radius: 11px; padding: 10px 14px;
  background: var(--cui-accent); color: var(--cui-on-accent); font: inherit; font-weight: 700; cursor: pointer; }
.cui-auth-submit:hover { filter: brightness(1.05); }
.cui-auth-signup { margin-top: 14px; border-top: 1px solid var(--cui-line); padding-top: 12px; }
.cui-auth-signup > summary { color: var(--cui-muted); font-size: 13px; cursor: pointer; }
.cui-auth-signup[open] > summary { margin-bottom: 12px; color: var(--cui-text); }
.cui-auth-alert { margin: 0 0 12px; padding: 9px 11px; border-radius: 10px; font-size: 12.5px; }
.cui-auth-alert--error { color: var(--cui-error); background: var(--cui-error-soft); }
.cui-auth-alert--success { color: var(--cui-ok); background: var(--cui-ok-soft); }
.cui-auth-footer { display: flex; justify-content: center; }
.cui-auth-footer a { display: inline-flex; align-items: center; gap: 7px; min-height: 36px; padding: 6px 10px;
  border-radius: 9px; color: var(--cui-muted); font-size: 12px; text-decoration: none; }
.cui-auth-footer a:hover { background: var(--cui-hover); color: var(--cui-text); }
.cui-auth-footer svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.8; }
@media (max-width: 480px) {
  body.cui-auth-page { place-items: start center; padding-top: max(18px, env(safe-area-inset-top)); }
  .cui-auth-shell { gap: 13px; }
  .cui-auth-brand { gap: 6px; }
  .cui-auth-logo { width: 50px; height: 50px; border-radius: 15px; }
  .cui-auth-brand h1 { font-size: 21px; }
}
@media (max-height: 760px) {
  body.cui-auth-page { place-items: start center; }
}
@media (prefers-reduced-motion: reduce) {
  .cui-auth-field input { transition: none; }
}