* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

/* LOGO */
.header-logo {
  background: #fff;
  padding: 15px 0;
  text-align: center;
}

.header-logo img {
  max-width: 160px;
}

/* FONDO */
.contacto-fondo {
  min-height: 100vh;
  background-image: url("imag/PORTADA.jpeg");
  background-size: cover;
  background-position: center;
}

/* OVERLAY NEGRO */
.overlay-negro {
  min-height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* CONTENEDOR */
.contacto-contenedor {
  width: 100%;
  max-width: 650px;
  text-align: center;
  color: #fff;
  padding: 20px;
}

.contacto-contenedor h1 {
  font-size: 40px;
  margin-bottom: 10px;
}

.contacto-contenedor p {
  font-size: 16px;
  margin-bottom: 25px;
  color: #ccc;
}

/* FORMULARIO (NEGRO, NO SE CAMBIA) */
.contacto-formulario {
  background: #000;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.6);
}

.contacto-formulario input,
.contacto-formulario textarea {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  background: transparent;
  border: 1px solid #555;
  color: #fff;
  border-radius: 6px;
}

.contacto-formulario textarea {
  resize: none;
  height: 120px;
}

.contacto-formulario input::placeholder,
.contacto-formulario textarea::placeholder {
  color: #aaa;
}

/* BOTONES */
.btn-enviar {
  width: 100%;
  padding: 12px;
  background: #fff;
  color: #000;
  border: none;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  margin-bottom: 10px;
}

.btn-whatsapp,
.btn-correo,
.btn-volver {
  display: block;
  text-decoration: none;
  padding: 12px;
  border-radius: 6px;
  margin-top: 10px;
  font-weight: bold;
}

/* WhatsApp */
.btn-whatsapp {
  background: #25D366;
  color: #fff;
}

/* Correo */
.btn-correo {
  background: #444;
  color: #fff;
}

/* Volver */
.btn-volver {
  background: #222;
  color: #fff;
}

/* RESPONSIVE */
@media (max-width: 600px) {
  .contacto-contenedor h1 {
    font-size: 30px;
  }
}