/* VARIABLES DE COLOR */
:root {
  --azul-principal: #1e56a0;
  --azul-oscuro: #153e75;
  --blanco: #ffffff;
  --gris-claro: #f5f7fa;
  --gris-medio: #e0e0e0;
  --gris-texto: #555;
}

/* RESET Y ESTILOS GENERALES */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--gris-texto);
  background-color: var(--blanco);
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 0;
}

h1, h2, h3, h4 {
  color: var(--azul-oscuro);
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* HEADER */
.header {
  background-color: var(--blanco);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
}

.logo img {
  height: 50px;
}

.nav ul {
  display: flex;
  gap: 1.5rem;
}

.nav a {
  font-weight: 600;
  transition: color 0.3s;
}

.nav a:hover {
  color: var(--azul-principal);
}

.btn-reserva {
  background-color: var(--azul-principal);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 30px;
  font-weight: bold;
  transition: background 0.3s;
}

.btn-reserva:hover {
  background-color: var(--azul-oscuro);
  color: white;
}

/* HERO */
.hero {
  background: linear-gradient(rgba(30, 86, 160, 0.85), rgba(21, 62, 117, 0.9)), url('assets/img/hero-bg.jpg') center/cover no-repeat;
  color: white;
  text-align: center;
  padding: 12rem 0 8rem;
  margin-top: 70px;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto;
}

/* SECCIONES */
.servicios, .nosotros, .testimonios, .productos, .contacto {
  padding: 4rem 0;
}

.servicios {
  background-color: var(--gris-claro);
}

.servicios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.servicio-card {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
  text-align: center;
  transition: transform 0.3s;
}

.servicio-card:hover {
  transform: translateY(-10px);
}

.icono {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

/* NOSOTROS */
.nosotros-contenido {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.foto-doctora img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.texto p {
  margin-bottom: 1rem;
}

/* TESTIMONIOS */
.testimonios {
  background-color: var(--gris-claro);
  text-align: center;
}

.carousel {
  position: relative;
  margin: 2rem auto;
  max-width: 700px;
  overflow: hidden;
}

.testimonial {
  display: none;
  padding: 2rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.testimonial.active {
  display: block;
  animation: fadeIn 0.6s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.carousel-nav {
  margin-top: 1.5rem;
}

.carousel-nav button {
  background: var(--azul-principal);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  font-size: 1.5rem;
  cursor: pointer;
  margin: 0 0.5rem;
  border-radius: 5px;
}

/* PRODUCTOS */
.productos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.producto-card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
  text-align: center;
}

.producto-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.precio {
  font-weight: bold;
  color: var(--azul-principal);
  margin: 0.5rem 0;
}

.btn-comprar {
  background-color: var(--azul-principal);
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  margin: 1rem 0;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s;
}

.btn-comprar:hover {
  background-color: var(--azul-oscuro);
}

/* CONTACTO */
.contacto form {
  max-width: 600px;
  margin: 2rem auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contacto input,
.contacto textarea {
  padding: 0.8rem;
  border: 1px solid var(--gris-medio);
  border-radius: 5px;
  font-size: 1rem;
}

.contacto textarea {
  height: 120px;
  resize: vertical;
}

.btn-enviar {
  background-color: var(--azul-principal);
  color: white;
  border: none;
  padding: 0.8rem;
  border-radius: 5px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.3s;
}

.btn-enviar:hover {
  background-color: var(--azul-oscuro);
}

/* FOOTER */
.footer {
  background-color: var(--azul-oscuro);
  color: white;
  padding: 3rem 0 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer a {
  color: white;
  transition: opacity 0.3s;
}

.footer a:hover {
  opacity: 0.8;
}

.copyright {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9rem;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .header .container {
    flex-wrap: wrap;
  }

  .nav ul {
    margin: 1rem 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .nosotros-contenido {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 10rem 0 6rem;
    margin-top: 120px;
  }
}