body {
  background-color: #000000;
  color: #D4AF37;
  font-family: 'Roboto', sans-serif;
  margin: 0;
  font-size: 1.05em;
}

/* Header */
header {
  width: 100%;
  position: fixed;
  top: 0;
  background: rgba(0, 0, 0, 0.85);
  border-bottom: 1px solid #D4AF37;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 30px;
}

.logo h1 {
  font-size: 1.8em;
  margin: 0;
}

.nav-list {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

.nav-list li {
  margin-left: 25px;
}

.nav-list li a {
  text-decoration: none;
  color: #D4AF37;
  font-size: 1em;
  transition: color 0.3s;
}

.nav-list li a:hover {
  color: #fff;
}

/* Main */
main {
  padding: 0px 20px 40px;
  max-width: 850px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  font-size: 2.3em;
  margin-bottom: 10px;
}

.intro-text {
  text-align: center;
  margin-bottom: 40px;
  font-size: 1.15em;
  color: #ccc;
}

/* Contacto */
.contact {
  background-color: #111;
  padding: 100px 55px;
  border-radius: 10px;
  border: 1.5px solid #b49019;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 40px auto 0;
  max-width: 850px;
}

.contact form {
  width: 100%;
  max-width: 600px;
  margin-top: 20px;
}

.input-group {
  position: relative;
  margin-bottom: 25px;
}

.input-group i {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: #D4AF37;
  font-size: 1.2em;
}

.input-group input,
.input-group textarea {
  width: 100%;
  padding: 14px 14px 14px 50px;
  background-color: #222;
  border: 1px solid #D4AF37;
  border-radius: 6px;
  color: #D4AF37;
  font-size: 1.05em;
}

.input-group textarea {
  resize: vertical;
  min-height: 140px;
}

.input-group input:focus,
.input-group textarea:focus {
  border-color: #fff;
  outline: none;
}

/* Botón */
.btn {
  width: 100%;
  background-color: #D4AF37;
  color: #000;
  padding: 14px;
  font-weight: bold;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1.2em;
  transition: all 0.3s ease;
}

.btn:hover {
  background-color: #fff;
  color: #000;
}

/* Errores */
.error-box {
  background: #2c0000;
  border: 1px solid #ff4d4d;
  padding: 15px;
  margin-bottom: 25px;
  border-radius: 6px;
  width: 100%;
  max-width: 700px;
}

.error-box ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.error-box li {
  color: #ff4d4d;
  margin-bottom: 8px;
  font-size: 1em;
}

/* Mensaje de éxito */
.mensaje-enviado {
  padding: 130px 20px;
  text-align: center;
}

.success-box {
  background-color: #111;
  border: 1.5px solid #D4AF37;
  border-radius: 10px;
  padding: 50px 25px;
  max-width: 750px;
  margin: 0 auto;
}

.success-box i {
  color: #D4AF37;
  margin-bottom: 10px;
  font-size: 2.5em;
}

.success-box h2 {
  font-size: 2em;
  margin-bottom: 10px;
}

.success-box p {
  font-size: 1.2em;
  margin-bottom: 20px;
}

/* Footer */
footer {
  background-color: #000000;
  text-align: center;
  padding: 10px;
  font-size: 1em;
  border-top: 2px solid #D4AF37;
}

/* 
  =======================================
  Media Queries para Responsividad
  =======================================
*/

/* Pantallas medianas: hasta 1024px */
@media (max-width: 1024px) {
  .header-container {
    padding: 15px 20px;
  }
  .nav-list li {
    margin-left: 20px;
  }
  .section-title {
    font-size: 2em;
  }
  .intro-text {
    font-size: 1.05em;
  }
  .contact {
    padding: 80px 40px;
  }
}

/* Pantallas pequeñas: hasta 768px */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .nav-list {
    flex-direction: column;
    margin-top: 10px;
  }

  .nav-list li {
    margin: 10px 0;
  }

  main {
    padding: 0 15px 30px;
  }

  .section-title {
    font-size: 1.8em;
  }

  .intro-text {
    font-size: 1em;
  }

  .contact {
    padding: 60px 30px;
    margin-top: 20px;
  }

  .input-group i {
    left: 15px;
  }

  .input-group input,
  .input-group textarea {
    padding-left: 45px;
  }

  .btn {
    font-size: 1em;
  }
}

/* Pantallas muy pequeñas: hasta 480px */
@media (max-width: 480px) {
  /* Ajustes generales */
  .logo h1 {
    font-size: 1.4em;
  }

  .section-title {
    font-size: 1.6em;
  }

  .intro-text {
    font-size: 0.95em;
  }

  .contact {
    padding: 40px 20px;
  }

  .btn {
    font-size: 0.95em;
  }

  .success-box h2 {
    font-size: 1.5em;
  }
  .success-box p {
    font-size: 1em;
  }
  footer {
    font-size: 0.9em;
  }

  /* Nuevo comportamiento para el header */
  header {
    top: auto;
    bottom: 0;
    left: 0;
    right: auto;
    width: auto;
    background: rgba(0, 0, 0, 0.85);
    border: none;
  }

  .header-container {
    padding: 10px 15px;
    flex-direction: row;
    justify-content: flex-start;
    align-items: center;
  }

  /* Ocultar el logo en versión iconos */
  .logo h1 {
    display: none;
  }

  .nav-list {
    display: flex;
    gap: 15px;
    margin: 0;
    padding: 0;
  }

  .nav-list li {
    margin: 0;
  }

  .nav-list li a {
    font-size: 1.8em;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Si en los enlaces hay texto adicional, se oculta */
  .nav-list li a span {
    display: none;
  }
}