body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f4f4;
  color: #333;
  transition: background-color 0.3s ease, color 0.3s ease;
}

header {
  background: #111;
  color: #fff;
  padding: 20px;
  text-align: center;
  transition: background-color 0.3s ease;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  padding: 0;
}

nav ul li {
  margin: 0 15px;
}

nav a {
  color: #fff;
  text-decoration: none;
  transition: color 0.3s ease;
}

section {
  padding: 60px 20px;
  max-width: 900px;
  margin: auto;
}

form input,
form textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 16px;
  box-sizing: border-box;
}

button {
  background: #111;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

/* Modo oscuro */
body.oscuro {
  background-color: #111;
  color: #f4f4f4;
}

body.oscuro header {
  background-color: #222;
}

body.oscuro nav a {
  color: #f4f4f4;
}

body.oscuro button {
  background-color: #444;
  color: #f4f4f4;
}

/* Mensaje de éxito */
#mensaje-enviado {
  background-color: #dff0d8;
  color: #3c763d;
  padding: 12px 20px;
  border-radius: 6px;
  border: 1px solid #c3e6cb;
  font-weight: bold;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.4s ease;
  display: none;
}

#mensaje-enviado.mostrar {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* ----------------------------
   Botón flotante de WhatsApp
----------------------------- */
@keyframes pulso {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }
  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

.boton-whatsapp {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  z-index: 999;
  transition: transform 0.2s ease;
  text-decoration: none;
}

.boton-whatsapp:hover {
  transform: scale(1.05);
}

.boton-whatsapp img.icono-whatsapp {
  width: 32px;
  height: 32px;
  object-fit: contain;
}


/* Estilos para los planes */
.plan {
  background: #fff;
  padding: 20px;
  margin: 20px 0;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease, border 0.3s ease;
}

.plan:hover {
  transform: translateY(-4px);
}

.plan h3 {
  margin-top: 0;
  color: #111;
}

body.oscuro .plan {
  background: #1c1c1c;
  color: #f4f4f4;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
}

body.oscuro .plan:hover {
  border: 1px solid rgba(255, 255, 255, 0.5);
}

#justificacion ul {
  padding-left: 20px;
}

#justificacion li {
  margin-bottom: 10px;
}

.plan h3 {
  margin-top: 0;
  color: #111;
}

body.oscuro .plan h3 {
  color: #ffffff;
}

/* -------------------------------
   Estilos destacados y responsive
-------------------------------- */
#sobre-mi h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #007acc;
  border-left: 5px solid #007acc;
  padding-left: 12px;
  margin-bottom: 20px;
}

section h2 {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: #222;
  font-weight: 600;
  position: relative;
  padding-left: 10px;
  border-left: 4px solid #007acc;
}

body.oscuro section h2 {
  color: #f0f0f0;
  border-left-color: #00bfff;
}

header h1 {
  font-size: 1.6rem;
  color: #007acc;
  margin: 0;
  font-weight: bold;
}

/* --------------------
   Responsive: Celulares
--------------------- */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.3rem;
    text-align: center;
  }

  #sobre-mi h2 {
    font-size: 1.5rem;
  }

  section h2 {
    font-size: 1.4rem;
  }

  header nav ul {
    flex-wrap: wrap;
    gap: 8px;
    padding-left: 0;
  }

  header nav ul li {
    margin: 5px 0;
  }
}
/* Imagen personalizada dentro del botón flotante */
.boton-whatsapp img.icono-whatsapp {
  width: 32px;
  height: 32px;
  display: block;
  object-fit: contain;
}
.boton-whatsapp img.icono-whatsapp {
  width: 32px;
  height: 32px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 0 3px #fff);
}
#modo-oscuro-toggle {
  background-color: transparent;
  border: none;
  font-size: 28px;
  cursor: pointer;
  transition: transform 0.3s ease, color 0.3s ease;
  padding: 8px;
  margin-left: 10px;
}

/* Animación de rebote */
#modo-oscuro-toggle.animando {
  animation: rebote 0.3s ease;
}

@keyframes rebote {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}
/* Animación elegante para elementos del nav y título */

header h1,
nav a {
  display: inline-block;
  position: relative;
  transition: transform 0.3s ease, color 0.3s ease;
}

header h1:hover,
nav a:hover {
  transform: translateY(-4px);
  color: #00bfff; /* celeste vibrante */
}

/* Subrayado animado */
nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0%;
  height: 2px;
  background-color: #00bfff;
  transition: width 0.3s ease;
}

nav a:hover::after {
  width: 100%;
}

/* En modo oscuro cambia el color del subrayado */
body.oscuro nav a:hover {
  color: #00bfff;
}

body.oscuro nav a::after {
  background-color: #00bfff;
}
.aparecer {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.aparecer.visible {
  opacity: 1;
  transform: translateY(0);
}
button:active {
  transform: scale(0.97);
}
body {
  background: linear-gradient(-45deg, #f4f4f4, #e8f0ff, #f4f4f4);
  background-size: 400% 400%;
  animation: fondoAnimado 12s ease infinite;
}

@keyframes fondoAnimado {
  0% {background-position: 0% 50%;}
  50% {background-position: 100% 50%;}
  100% {background-position: 0% 50%;}
}

body.oscuro {
  background: linear-gradient(-45deg, #111, #222, #111);
}
.aparecer {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.aparecer.visible {
  opacity: 1;
  transform: translateY(0);
}
nav a.activo {
  color: #00bfff;
  font-weight: bold;
}

body.oscuro nav a.activo {
  color: #00bfff;
}
.boton-arriba {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 48px;
  height: 48px;
  background-color: rgba(0, 0, 0, 0.6); /* Fondo oscuro semitransparente */
  color: #fff; /* Flecha blanca */
  font-size: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.boton-arriba.visible {
  opacity: 1;
  transform: scale(1);
}

/* En modo oscuro: mantener la flecha blanca y fondo ligeramente más claro */
body.oscuro .boton-arriba {
  background-color: rgba(255, 255, 255, 0.15);
  color: #fff;
}
@keyframes pulso-suave {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.2);
  }
  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 10px rgba(255, 255, 255, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
  }
}
.slogan {
  font-size: 1.1rem;
  font-weight: 400;
  color: #555;
  font-style: italic;
  text-align: center;
  margin-top: -0.5rem;
  margin-bottom: 1rem;
}
.slogan {
  font-size: 1.1rem;
  color: #666;
  text-align: center;
  margin: 0.3rem 0 1rem;
  font-style: italic;
  opacity: 0.85;
}
.slogan:hover {
  color: #007acc;
  text-decoration: underline;
  transition: color 0.3s ease;
}
.errores-formulario {
  color: #b10000;
  background: #ffecec;
  border: 1px solid #ff7a7a;
  padding: 0.8rem;
  margin-bottom: 1rem;
  border-radius: 5px;
  display: none;
  font-size: 0.9rem;
}

.errores-formulario.mostrar {
  display: block;
}
.plan {
  perspective: 1000px;
  transform-style: preserve-3d;
  will-change: transform;
}
#cotizador {
  background: #fff;
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 40px;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.05);
}

body.oscuro #cotizador {
  background: #1a1a1a;
  color: #f0f0f0;
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.05);
}

#cotizador h2 {
  margin-top: 0;
  color: #007acc;
}

#form-cotizador label {
  display: block;
  margin: 10px 0;
  font-size: 1rem;
}

.total-cotizacion {
  font-size: 1.2rem;
  margin-top: 20px;
  font-weight: bold;
  color: #007acc;
}
.cotizador-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.item-cotizador {
  display: flex;
  align-items: center;
  padding: 1rem;
  background-color: #fff;
  border-radius: 12px;
  border: 2px solid #ccc;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  font-weight: 500;
  cursor: pointer;
}

.item-cotizador:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.item-cotizador input {
  margin-right: 0.75rem;
  transform: scale(1.2);
}

/* Colores personalizados por borde */
.borde-azul { border-color: #3b82f6; }
.borde-verde { border-color: #10b981; }
.borde-naranja { border-color: #f97316; }
.borde-gris { border-color: #9ca3af; }
.borde-rosado { border-color: #ec4899; }
.borde-amarillo { border-color: #facc15; }
.borde-lima { border-color: #84cc16; }
.borde-celeste { border-color: #22d3ee; }
.borde-morado { border-color: #a855f7; }
/* Estilo base para cada ítem del cotizador */
#form-cotizador label {
  display: block;
  background-color: var(--fondo-item, #f9f9f9);
  color: var(--color-texto, #111);
  border-left: 5px solid #007acc;
  border-radius: 8px;
  margin: 10px 0;
  padding: 10px 15px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease, background-color 0.3s ease;
}

/* Efecto flotante */
#form-cotizador label:hover {
  transform: translateY(-2px);
}

/* Ajustes de checkbox */
#form-cotizador input[type="checkbox"] {
  margin-right: 10px;
}

/* Modo oscuro */
body.oscuro #form-cotizador label {
  background-color: #222;
  color: #eee;
  border-left: 5px solid #00c4ff;
}
#precios h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: #007acc;
  text-align: center;
  position: relative;
  margin-bottom: 40px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
body.oscuro #precios h2 {
  color: #00bfff;
}
#precios h2::after {
  content: "";
  display: block;
  width: 80px;
  height: 4px;
  background-color: #007acc;
  margin: 10px auto 0;
  border-radius: 4px;
}

body.oscuro #precios h2::after {
  background-color: #00bfff;
}
.item-cotizador.active {
  background-color: #0d6efd;
  color: white;
  border-color: #0d6efd;
  box-shadow: 0 4px 12px rgba(13, 110, 253, 0.4);
  transform: scale(1.02);
}
#mensaje-enviado {
  opacity: 0;
  transition: opacity 0.5s ease;
  color: green;
  margin-top: 10px;
}
#mensaje-enviado.mostrar {
  opacity: 1;
}
#terminos-condiciones {
  background-color: #f8f8f8;
  padding: 2rem;
  font-size: 0.95rem;
  border-top: 1px solid #ddd;
  color: #333;
}

#terminos-condiciones h2 {
  margin-bottom: 1rem;
}

#terminos-condiciones ul {
  padding-left: 1.2rem;
  list-style-type: none;
}

#terminos-condiciones ul li::before {
  content: "✔️ ";
  margin-right: 0.5rem;
}
.item-cotizador {
  padding: 10px 16px;
  margin: 6px;
  border: 2px solid #007acc;
  border-radius: 8px;
  background-color: white;
  color: #007acc;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
}

.item-cotizador:hover {
  background-color: #007acc;
  color: white;
}

.item-cotizador.active {
  background-color: #007acc;
  color: white;
}
body.oscuro .item-cotizador {
  background-color: #1a1a1a;
  color: white;
  border-color: white;
}

body.oscuro .item-cotizador:hover,
body.oscuro .item-cotizador.active {
  background-color: white;
  color: #1a1a1a;
}
.btn-outline-primary {
  background-color: white;
  color: #007bff;
  border: 2px solid #007bff;
}
.btn-outline-primary:hover {
  background-color: #007bff;
  color: white;
}
.item-cotizador:hover,
.item-cotizador.active {
  background-color: #007acc;
  color: white;
}
body.oscuro #terminos-condiciones {
  background-color: #1a1a1a;
  color: #f0f0f0;
  border-top: 1px solid #444;
}

body.oscuro #terminos-condiciones ul li::before {
  content: "✔️ ";
  color: #00bfff;
}
body.oscuro #terminos-condiciones {
  background-color: #111;
  color: #eee;
}

body.oscuro #terminos-condiciones a {
  color: #4fc3f7;
}
.boton-informativo {
  position: fixed;
  top: 20px;
  right: 20px;
  background-color: #007acc;
  color: white;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  z-index: 9999;
  transition: background-color 0.3s ease;
}

.boton-informativo:hover {
  background-color: #005fa3;
}
.item-cotizador:hover {
  transform: scale(0.97);
  transition: transform 0.1s ease;
}
@media (max-width: 768px) {
  body {
    font-size: 16px;
    padding: 0 1rem;
  }

  header nav ul {
    display: none; /* Oculta menú en móvil */
    flex-direction: column;
    background-color: #007acc;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 1000;
  }

  header nav ul.show {
    display: flex;
  }

  header nav li {
    margin: 0.5rem 0;
    text-align: center;
  }

  #modo-oscuro-toggle {
    position: absolute;
    right: 1rem;
    top: 1rem;
  }

  header h1 {
    font-size: 1.8rem;
    text-align: center;
  }

  .plan {
    padding: 1rem;
    margin-bottom: 2rem;
  }

  .cotizador-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  input, textarea, button {
    width: 100%;
    font-size: 1rem;
  }

  .boton-whatsapp,
  .boton-informativo {
    right: 1rem;
    bottom: 1rem;
    width: 50px;
    height: 50px;
  }

  footer p {
    font-size: 0.9rem;
    text-align: center;
  }
}
#modo-oscuro-toggle {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 10;
}

/* Ajuste solo para pantallas pequeñas */
@media (max-width: 768px) {
  header {
    position: relative;
    padding-top: 3rem; /* Espacio para que no tape el título */
  }

  h1 {
    text-align: center;
    margin-top: 1rem;
  }

  #modo-oscuro-toggle {
    top: 0.5rem;
    right: 0.5rem;
  }
}