/* =============================================================
   auth.css — Registration, Login, and MFA screen styles
   All values reference tokens from tokens.css.
   Never use hardcoded colors, fonts, or spacing here.
   ============================================================= */

/* ── Shared form card ─────────────────────────────────────────── */
.auth-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.auth-header img {
  height: 48px;
  width: auto;
  margin-bottom: var(--space-md);
}

.auth-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.auth-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ── Form fields ──────────────────────────────────────────────── */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.form-label .optional-badge {
  font-weight: var(--font-weight-normal);
  color: var(--color-text-light);
  font-size: 12px;
  margin-left: var(--space-xs);
}

.form-input {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-base);
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  /* Minimum tap target */
  min-height: var(--tap-target-min);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  box-sizing: border-box;
  -webkit-appearance: none;  /* prevent iOS styling */
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(178, 34, 52, 0.12);
}

.form-input.error {
  border-color: var(--color-error);
}

.form-input::placeholder {
  color: var(--color-border);
}

/* Numeric code input — centered, large, spaced */
.code-input {
  text-align: center;
  font-size: var(--font-size-xl);
  letter-spacing: 0.4em;
  font-weight: var(--font-weight-bold);
}

.form-help {
  margin-top: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.form-error {
  margin-top: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-error);
  display: none;
}

.form-error.visible {
  display: block;
}

/* ── Radio groups (language, MFA method) ──────────────────────── */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.radio-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast),
              background-color var(--transition-fast);
  min-height: var(--tap-target-min);
}

.radio-option:has(input:checked) {
  border-color: var(--color-primary);
  background-color: rgba(178, 34, 52, 0.04);
}

.radio-option input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.radio-option .radio-label {
  font-size: var(--font-size-base);
  color: var(--color-text);
  flex: 1;
}

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-base);
  font-family: var(--font-body);
  font-weight: var(--font-weight-medium);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: var(--tap-target-min);
  transition: background-color var(--transition-fast),
              opacity var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-primary-dark);
  outline: none;
}

.btn-primary:active {
  opacity: 0.9;
}

.btn-primary:disabled,
.btn-primary[aria-busy="true"] {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background-color: rgba(178, 34, 52, 0.06);
  outline: none;
}

.btn-link {
  background: transparent;
  color: var(--color-primary);
  border: none;
  font-weight: var(--font-weight-normal);
  text-decoration: underline;
  padding: 0;
  min-height: auto;
  width: auto;
  display: inline;
  cursor: pointer;
}

/* Loading spinner inside button */
.btn .spinner-sm {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: var(--space-sm);
  display: none;
}

.btn[aria-busy="true"] .spinner-sm { display: block; }
.btn[aria-busy="true"] .btn-label  { opacity: 0.7; }

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

/* ── Alert / inline message ───────────────────────────────────── */
.alert {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
  display: none;
}

.alert.visible { display: block; }
.alert-error   { background: rgba(198,40,40,0.08); color: var(--color-error); border: 1px solid rgba(198,40,40,0.2); }
.alert-success { background: rgba(46,125,50,0.08); color: var(--color-success); border: 1px solid rgba(46,125,50,0.2); }

/* ── Footer link row ──────────────────────────────────────────── */
.auth-footer {
  text-align: center;
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ── Resend countdown (MFA screen) ───────────────────────────── */
.resend-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.resend-countdown {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ── Destination display (MFA screen) ────────────────────────── */
.mfa-destination {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--space-md);
  word-break: break-all;
}