/* Layout centrado */
body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #8ea8ff;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* Contenedor de login/registro */
.auth-card {
  width: min(92vw, 420px); /* máximo 420px de ancho */  
}

/* Tarjeta con borde suave */
.card {
  border: 0;
  border-radius: 20px;
}

.shadow-soft {
  box-shadow: 0 10px 30px rgba(0,0,0,.06);
}

/* Branding */
.brand {
  font-weight: 700;
  letter-spacing: .4px;
}

.muted {
  color: #6c757d;
}

/* Inputs y botones redondeados */
.form-control,
.btn {
  border-radius: 14px;
}

/* Botones con padding extra */
.btn-primary,
.btn-success {
  padding: .75rem 1rem;
}