.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 6rem 1rem 3rem;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  border: 1px solid var(--accent-line);
  padding: 3rem 2.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* En-tête de la carte */
.auth-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.auth-logo {
  font-family: var(--font-sc);
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
}

.auth-logo:hover {
  color: var(--text-primary);
}

.auth-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  color: var(--text-primary);
  line-height: 1.1;
}

/* Formulaire */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.auth-field label {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.auth-field input {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--text-muted);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.5rem 0;
  width: 100%;
  transition: border-color 250ms ease;
}

.auth-field input:focus {
  outline: none;
  border-bottom-color: var(--accent);
}

.auth-field input::placeholder {
  color: var(--text-muted);
}

/* Groupement de champs côte-à-côte (register) */
.auth-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

/* Message d'erreur par champ */
.auth-field-error {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  color: #c08070;
  letter-spacing: 0.04em;
}

/* Erreur globale */
.auth-error-global {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: #c08070;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(192, 128, 112, 0.3);
}

/* Bouton principal */
.auth-btn {
  display: block;
  width: 100%;
  padding: 0.9rem 1rem;
  background: var(--accent-gradient);
  color: var(--surface-dark);
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: opacity 250ms ease;
  margin-top: 0.5rem;
}

.auth-btn:hover {
  opacity: 0.85;
}

/* Pied de carte — lien alternatif */
.auth-footer {
  text-align: center;
  border-top: 1px solid var(--accent-line);
  padding-top: 1.5rem;
}

.auth-footer p {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.auth-footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 250ms ease;
}

.auth-footer a:hover {
  color: var(--accent);
}

@media (max-width: 480px) {
  .auth-card {
    padding: 2.5rem 1.5rem 2rem;
  }

  .auth-row {
    grid-template-columns: 1fr;
  }
}