/* ==========================================================
   LLAVE EXTRA – ESTILOS PARA SECCIONES EN DESARROLLO
   (Excluye el header)
   ========================================================== */

body {
  margin: 0;
  padding-top: 160px; /* espacio para el header fijo */
  font-family: "Montserrat", sans-serif;
  background: linear-gradient(180deg, #ffffff 0%, #f7f7f7 100%);
  color: #111;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ----------------------------------------------------------
   SECCIÓN PRINCIPAL EN DESARROLLO
   ---------------------------------------------------------- */
.contenedor-desarrollo {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 20px;
  text-align: center;
  animation: fadeIn 1.2s ease forwards;
}

.mensaje {
  max-width: 700px;
  background: #fff;
  padding: 50px 30px;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  border: 1px solid #eee;
}

.mensaje h1 {
  font-size: 2.2em;
  color: #f47a0b;
  margin-bottom: 15px;
}

.mensaje p {
  font-size: 1.1em;
  line-height: 1.7em;
  margin: 10px 0;
}

.btn-volver {
  display: inline-block;
  margin-top: 25px;
  padding: 12px 28px;
  background: #f47a0b;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: background 0.3s ease, transform 0.2s ease;
}

.btn-volver:hover {
  background: #d96a05;
  transform: translateY(-2px);
}

/* ----------------------------------------------------------
   FOOTER
   ---------------------------------------------------------- */
.footer-llaveextra {
  background: #fff;
  color: #777;
  text-align: center;
  font-size: 0.9em;
  padding: 20px 10px;
  border-top: 1px solid #eee;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.03);
}

/* ----------------------------------------------------------
   ANIMACIONES
   ---------------------------------------------------------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ----------------------------------------------------------
   RESPONSIVE
   ---------------------------------------------------------- */
@media (max-width: 768px) {
  body {
    padding-top: 130px;
  }

  .mensaje {
    padding: 35px 20px;
  }

  .mensaje h1 {
    font-size: 1.7em;
  }

  .mensaje p {
    font-size: 1em;
  }

  .btn-volver {
    padding: 10px 22px;
    font-size: 0.95em;
  }
}