/* Auth screens — premium login, 2FA, password reset */

.auth-body {
  min-height: 100vh;
  background: var(--color-surface-secondary);
  -webkit-font-smoothing: antialiased;
}

.auth-layout {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
  .auth-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

.auth-layout--single .auth-layout__panel {
  grid-column: 1 / -1;
}

.auth-layout__brand {
  display: none;
  position: relative;
  overflow: hidden;
  padding: var(--space-12);
  color: var(--color-text-on-brand);
  background: var(--color-brand-primary);
}

@media (min-width: 1024px) {
  .auth-layout__brand {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

.auth-layout__brand-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.35), transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.2), transparent 40%);
  pointer-events: none;
}

.auth-layout__brand-content {
  position: relative;
  max-width: 28rem;
}

.auth-layout__brand-logo {
  width: 4.5rem;
  height: 4.5rem;
  object-fit: contain;
  margin-bottom: var(--space-6);
}

.auth-layout__brand-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
  line-height: var(--line-height-tight);
  margin: 0 0 var(--space-4);
}

.auth-layout__brand-tagline {
  font-size: var(--text-lg);
  opacity: 0.92;
  margin: 0;
}

.auth-layout__panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
  padding-top: max(var(--space-8), env(safe-area-inset-top));
  padding-bottom: max(var(--space-8), env(safe-area-inset-bottom));
}

.auth-card {
  width: min(100%, var(--auth-card-width, 440px));
  background: var(--color-surface);
  border: var(--border-default);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--auth-card-padding, var(--space-10));
}

.auth-card--shake {
  animation: authShake 0.45s ease;
}

@keyframes authShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.auth-card__toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-4);
}

.auth-theme-toggle {
  border: var(--border-default);
  background: var(--color-surface-secondary);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  cursor: pointer;
}

.auth-card__header {
  margin-bottom: var(--space-6);
}

.auth-card__header--center {
  text-align: center;
}

.auth-card__logo {
  display: block;
  height: var(--auth-logo-height, 40px);
  margin: 0 auto var(--space-4);
  object-fit: contain;
}

.auth-card__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  margin: 0 0 var(--space-2);
  color: var(--color-text-primary);
}

.auth-card__subtitle {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.auth-card__footer {
  margin-top: var(--space-6);
  text-align: center;
  font-size: var(--text-sm);
}

.auth-alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.auth-alert--danger {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.auth-form {
  display: grid;
  gap: var(--space-4);
}

.auth-form__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

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

.auth-field__label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
}

.auth-field__control {
  position: relative;
  display: flex;
  align-items: center;
}

.auth-field__icon {
  position: absolute;
  left: var(--space-3);
  color: var(--color-text-muted);
  pointer-events: none;
}

.auth-input,
.auth-field__control input[type="text"],
.auth-field__control input[type="email"],
.auth-field__control input[type="password"] {
  width: 100%;
  min-height: 2.75rem;
  padding: var(--space-3) var(--space-4);
  padding-left: calc(var(--space-4) + 1.5rem);
  border: var(--border-default);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-size: 1rem;
}

.auth-field__control input:not([type="checkbox"]) {
  padding-left: var(--space-4);
}

.auth-field__control .auth-input,
.auth-field__control input.auth-input--password {
  padding-right: 4.5rem;
  padding-left: calc(var(--space-4) + 1.5rem);
}

.auth-input:focus,
.auth-field__control input:focus {
  outline: 2px solid color-mix(in srgb, var(--color-brand-primary) 35%, transparent);
  border-color: var(--color-brand-primary);
}

.auth-field__toggle {
  position: absolute;
  right: var(--space-2);
  border: 0;
  background: transparent;
  color: var(--color-brand-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  min-height: 2.75rem;
  padding: 0 var(--space-2);
}

.auth-field__error {
  margin: 0;
  color: var(--color-danger);
  font-size: var(--text-sm);
}

.auth-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
}

.auth-link {
  color: var(--color-brand-primary);
  font-size: var(--text-sm);
  text-decoration: none;
}

.auth-link:hover {
  text-decoration: underline;
}

.auth-submit {
  margin-top: var(--space-2);
  min-height: 2.75rem;
  width: 100%;
  border: 0;
  border-radius: var(--radius-md);
  background: var(--color-brand-primary);
  color: var(--color-brand-primary-text);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: background var(--transition-fast);
  text-decoration: none;
}

.auth-submit:hover {
  background: var(--color-brand-primary-hover);
}

.auth-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.auth-submit--link {
  text-align: center;
}

.auth-submit__spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: authSpin 0.8s linear infinite;
}

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

.auth-flash {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 50;
  display: grid;
  gap: var(--space-2);
}

.auth-flash__item {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  font-size: var(--text-sm);
}

.otp-input__boxes {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
}

.otp-input__box {
  width: 3rem;
  height: 3.5rem;
  text-align: center;
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  border: var(--border-default);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.otp-input__box:focus {
  outline: 2px solid var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

.auth-otp-timer {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin: 0;
}

.auth-password-meter {
  display: grid;
  gap: var(--space-1);
}

.auth-password-meter__bar {
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--color-border);
  overflow: hidden;
}

.auth-password-meter__bar::after {
  content: "";
  display: block;
  height: 100%;
  width: var(--meter-width, 0%);
  background: var(--meter-color, var(--color-danger));
  transition: width var(--transition-base), background var(--transition-base);
}

.auth-password-meter__label {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.auth-2fa__qr {
  max-width: 12rem;
  margin: var(--space-4) auto;
  display: block;
}

.auth-backup-codes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
}

.auth-backup-codes code {
  display: block;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-secondary);
  border-radius: var(--radius-md);
  text-align: center;
}

@media (prefers-reduced-motion: reduce) {
  .auth-card--shake {
    animation: none;
  }
}