/* ==========================================================================
   Grupo Farmanorte — hoja de estilos compartida
   Paleta tomada del logo: anillos azul → azul marino, con acento verde.
   ========================================================================== */

:root {
  --navy:        #1B2A6B;   /* azul marino del logo — color maestro */
  --navy-dark:   #131E4D;
  --blue:        #2E6DB4;   /* azul de los anillos exteriores */
  --blue-light:  #4A90D9;
  --green:       #2FA36B;   /* acento verde del degradado del logo */
  --whatsapp:    #25D366;
  --texto:       #1B2733;
  --texto-suave: #5A6775;
  --linea:       #E3E8EF;
  --fondo:       #FFFFFF;
  --fondo-suave: #F5F8FC;

  --radio:       10px;
  --sombra:      0 4px 16px rgba(27, 42, 107, .07);
  --sombra-alta: 0 12px 30px rgba(27, 42, 107, .14);
  --ancho:       1180px;
  --fuente:      'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--fuente);
  color: var(--texto);
  background: var(--fondo);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--blue); }

/* ==========================================================================
   1. Pantalla de carga (3 s, solo en la primera visita de la sesión)
   La animación es 100 % CSS: aunque el JavaScript falle, la pantalla se va.
   ========================================================================== */

.carga {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-dark) 55%, #0C1436 100%);
  animation: carga-salir .7s ease 3s forwards;
}

/* Si ya visitó la página en esta sesión, ni siquiera se dibuja. */
html.sin-carga .carga { display: none; }

@keyframes carga-salir {
  to { opacity: 0; visibility: hidden; pointer-events: none; }
}

/* Caja cuadrada: los anillos y el logo se centran en ella */
.carga__marca {
  position: relative;
  display: grid;
  place-items: center;
  width: min(420px, 86vw);
  aspect-ratio: 1 / 1;
}

/* Anillos y logo en la misma celda: así el logo queda en el centro exacto */
.carga__anillos {
  position: absolute;
  inset: 0;
}

/* Anillos concéntricos, guiño al isotipo del logo */
.carga__anillos span {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 2px solid rgba(74, 144, 217, .55);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: pulso 2.4s ease-out infinite;
}
.carga__anillos span:nth-child(1) { width: 62%;  height: 62%;  animation-delay: 0s; }
.carga__anillos span:nth-child(2) { width: 81%;  height: 81%;  animation-delay: .35s; }
.carga__anillos span:nth-child(3) { width: 100%; height: 100%; animation-delay: .7s; border-color: rgba(47, 163, 107, .5); }

@keyframes pulso {
  0%   { opacity: 0;   transform: translate(-50%, -50%) scale(.85); }
  40%  { opacity: 1; }
  100% { opacity: 0;   transform: translate(-50%, -50%) scale(1.15); }
}

/* Logo en blanco, sin caja, centrado dentro de los anillos */
.carga__logo {
  position: relative;
  z-index: 2;
  width: 56%;
  height: auto;
  animation: aparecer .8s ease both;
}

.carga__titulo {
  color: #fff;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: .5px;
  text-align: center;
  animation: aparecer .8s ease .15s both;
}

.carga__texto {
  color: rgba(255, 255, 255, .72);
  font-size: .9rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  text-align: center;
  padding: 0 1.5rem;
  animation: aparecer .8s ease .3s both;
}

@keyframes aparecer {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

.carga__barra {
  width: 220px;
  max-width: 60vw;
  height: 3px;
  background: rgba(255, 255, 255, .18);
  border-radius: 3px;
  overflow: hidden;
}

.carga__barra i {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--blue-light), var(--green));
  transform-origin: left center;
  animation: barra 3s linear forwards;
}

@keyframes barra { from { transform: scaleX(0); } to { transform: scaleX(1); } }

@media (prefers-reduced-motion: reduce) {
  .carga__anillos span { animation: none; opacity: .4; }
  .carga__logo, .carga__titulo, .carga__texto { animation: none; }
}

/* ==========================================================================
   2. Cabecera y navegación
   ========================================================================== */

.encabezado {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #fff;
  border-bottom: 1px solid var(--linea);
  box-shadow: 0 2px 12px rgba(27, 42, 107, .05);
}

.nav {
  max-width: var(--ancho);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .55rem 1.5rem;
}

/* Logo de Grupo Farmanorte — arriba a la izquierda */
.nav__logo { display: flex; align-items: center; gap: .7rem; text-decoration: none; }
.nav__logo img { height: 80px; width: auto; object-fit: contain; }

.nav__links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 2rem;
}

.nav__links a {
  position: relative;
  text-decoration: none;
  color: var(--texto);
  font-weight: 500;
  font-size: .98rem;
  padding: .35rem 0;
  transition: color .25s;
}

.nav__links a:not(.btn):hover { color: var(--blue); }

.nav__links a:not(.btn)::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--green);
  transition: width .25s ease;
}
.nav__links a:not(.btn):hover::after { width: 100%; }

/* Marca la página/sección en la que estás */
.nav__links a.activo { color: var(--navy); font-weight: 700; }
.nav__links a.activo::after { width: 100%; background: var(--blue); }

.btn {
  display: inline-block;
  background: var(--navy);
  color: #fff !important;
  padding: .65rem 1.35rem;
  border-radius: var(--radio);
  font-weight: 600;
  text-decoration: none;
  transition: background .25s, transform .2s, box-shadow .25s;
}
.btn:hover { background: var(--blue); transform: translateY(-2px); box-shadow: var(--sombra-alta); }

.btn--linea {
  background: transparent;
  color: var(--navy) !important;
  border: 2px solid var(--navy);
  padding: .58rem 1.3rem;
}
.btn--linea:hover { background: var(--navy); color: #fff !important; }

.btn--claro {
  background: #fff;
  color: var(--navy) !important;
}
.btn--claro:hover { background: rgba(255,255,255,.88); color: var(--navy) !important; }

/* El "Contacto" de la barra superior va un punto más grande que el resto
   de botones. En móvil no aplica: ahí es una fila más del menú desplegable. */
@media (min-width: 861px) {
  .nav__links .btn {
    padding: .82rem 1.75rem;
    font-size: 1.02rem;
  }
}

/* Botón hamburguesa (móvil) */
.nav__menu {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: .5rem;
  width: 44px;
  height: 44px;
}
.nav__menu span {
  display: block;
  height: 2px;
  width: 26px;
  margin: 5px auto;
  background: var(--navy);
  border-radius: 2px;
  transition: transform .3s, opacity .25s;
}
.nav__menu[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__menu[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__menu[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   3. Estructura general de secciones
   ========================================================================== */

.seccion {
  max-width: var(--ancho);
  margin: 0 auto;
  padding: 4.5rem 1.5rem;
}

.seccion--suave { max-width: none; background: var(--fondo-suave); }
.seccion--suave > * { max-width: var(--ancho); margin-left: auto; margin-right: auto; }

.titulo {
  text-align: center;
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  color: var(--navy);
  margin-bottom: .6rem;
}

.titulo::after {
  content: '';
  display: block;
  width: 64px; height: 3px;
  margin: .8rem auto 0;
  background: linear-gradient(90deg, var(--blue), var(--green));
  border-radius: 3px;
}

.subtitulo {
  text-align: center;
  color: var(--texto-suave);
  max-width: 720px;
  margin: 1.2rem auto 2.8rem;
}

/* ==========================================================================
   4. Portada (hero)
   ========================================================================== */

.hero {
  position: relative;
  color: #fff;
  text-align: center;
  background: var(--navy);
}

/* Video de portada: arriba, a todo lo ancho, sin texto encima */
.hero__video {
  position: relative;
  height: clamp(240px, 50vw, 600px);
  overflow: hidden;
  background: var(--navy);
}

.hero__video-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

/* Curva que une el video con la franja azul */
.hero__curva {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: clamp(36px, 7vw, 110px);
  fill: var(--navy);
}

/* Franja azul con el titular */
.hero__banda {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--navy) 0%, #23408C 60%, var(--blue) 100%);
  padding: 2.5rem 1.5rem 5rem;
}

/* Anillos decorativos del logo, muy sutiles, al fondo */
.hero__banda::before,
.hero__banda::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .07);
  pointer-events: none;
}
.hero__banda::before { width: 480px; height: 480px; top: -260px;  right: -110px; }
.hero__banda::after  { width: 700px; height: 700px; bottom: -430px; left: -180px; border-color: rgba(47,163,107,.12); }

.hero__contenido { position: relative; z-index: 1; max-width: 880px; margin: 0 auto; }

.hero h1 {
  font-size: clamp(1.9rem, 5vw, 2.9rem);
  line-height: 1.25;
  margin-bottom: 1.1rem;
}

.hero p {
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  color: rgba(255, 255, 255, .85);
  max-width: 700px;
  margin: 0 auto 2rem;
}

.hero__acciones {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sello de distribuidor autorizado de Alcon */
.sello {
  display: flex;
  justify-content: center;
  margin: 2.5rem auto 0;
}
.sello img {
  width: min(320px, 80%);
  height: auto;
}

/* Cabecera compacta para las páginas internas */
.portada-interna {
  background: linear-gradient(150deg, var(--navy) 0%, #23408C 100%);
  color: #fff;
  padding: 3.5rem 1.5rem;
  text-align: center;
}
.portada-interna h1 { font-size: clamp(1.7rem, 4.5vw, 2.4rem); margin-bottom: .6rem; }
.portada-interna p  { color: rgba(255,255,255,.82); max-width: 700px; margin: 0 auto; }

.miga {
  max-width: var(--ancho);
  margin: 0 auto;
  padding: 1rem 1.5rem 0;
  font-size: .88rem;
  color: var(--texto-suave);
}
.miga a { color: var(--blue); text-decoration: none; }
.miga a:hover { text-decoration: underline; }

/* ==========================================================================
   5. Carrusel de aliados
   ========================================================================== */

.aliados {
  background: #fff;
  border-top: 1px solid var(--linea);
  border-bottom: 1px solid var(--linea);
  padding: 2.8rem 0;
  text-align: center;
  overflow: hidden;
}

.aliados__titulo {
  font-size: .92rem;
  text-transform: uppercase;
  letter-spacing: 1.8px;
  color: var(--texto-suave);
  font-weight: 600;
  margin-bottom: 2rem;
  padding: 0 1.5rem;
}

.carrusel {
  position: relative;
  width: 100%;
  overflow: hidden;
  /* Difuminado en los bordes para que los logos entren y salgan suave */
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.carrusel__pista {
  display: flex;
  width: max-content;
  animation: correr 32s linear infinite;
}

.carrusel:hover .carrusel__pista,
.carrusel:focus-within .carrusel__pista { animation-play-state: paused; }

@keyframes correr {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.carrusel__item {
  flex: 0 0 auto;
  width: 210px;
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
}

.carrusel__item img {
  max-width: 100%;
  max-height: 60px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: .68;
  transition: filter .3s, opacity .3s, transform .3s;
}

.carrusel__item img:hover {
  filter: grayscale(0);
  opacity: 1;
  transform: scale(1.07);
}

/* Si falta el archivo de un logo, se muestra el nombre en vez de un icono roto */
.carrusel__item .respaldo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 56px;
  border: 1px dashed var(--linea);
  border-radius: var(--radio);
  color: var(--texto-suave);
  font-weight: 600;
  font-size: .9rem;
  background: var(--fondo-suave);
}

@media (prefers-reduced-motion: reduce) {
  .carrusel__pista { animation: none; }
  .carrusel { overflow-x: auto; }
}

/* ==========================================================================
   6. Tarjetas y rejillas
   ========================================================================== */

.rejilla {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.8rem;
}

.rejilla--2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
/* Cuatro tarjetas en una fila en escritorio (2 x 2 en tableta, 1 en móvil) */
.rejilla--4 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

.tarjeta {
  background: #fff;
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  padding: 2rem 1.8rem;
  box-shadow: var(--sombra);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}

.tarjeta:hover {
  transform: translateY(-6px);
  box-shadow: var(--sombra-alta);
  border-color: rgba(46, 109, 180, .35);
}

/* Tarjetas de servicio: una barra de color sobre el título, sin iconos */
.tarjeta--servicio h3::before {
  content: '';
  display: block;
  width: 38px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--blue), var(--green));
  margin-bottom: 1rem;
}

.tarjeta h3 { color: var(--navy); margin-bottom: .6rem; font-size: 1.15rem; }
.tarjeta p  { color: var(--texto-suave); }

.tarjeta ul { margin: .9rem 0 0 1.1rem; color: var(--texto-suave); }
.tarjeta li { margin-bottom: .4rem; }

/* Cifras / indicadores */
.cifras {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  text-align: center;
}
.cifra strong {
  display: block;
  font-size: 2.2rem;
  color: var(--navy);
  line-height: 1.2;
}
.cifra span { color: var(--texto-suave); font-size: .95rem; }

/* Lista de pasos (proceso) */
.pasos { list-style: none; counter-reset: paso; display: grid; gap: 1.2rem; }
.pasos li {
  counter-increment: paso;
  position: relative;
  padding-left: 3.6rem;
  color: var(--texto-suave);
}
.pasos li::before {
  content: counter(paso);
  position: absolute;
  left: 0; top: 0;
  width: 2.4rem; height: 2.4rem;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
}
.pasos li strong { display: block; color: var(--texto); }

/* Bloque de texto centrado */
.prosa { max-width: 820px; margin: 0 auto; color: var(--texto-suave); }
.prosa p { margin-bottom: 1.1rem; }
.prosa strong { color: var(--texto); }

/* Llamado a la acción final */
.cta {
  background: linear-gradient(135deg, var(--navy), var(--blue));
  color: #fff;
  border-radius: var(--radio);
  padding: 3rem 2rem;
  text-align: center;
}
.cta h2 { font-size: clamp(1.4rem, 3.5vw, 1.9rem); margin-bottom: .8rem; }
.cta p  { color: rgba(255,255,255,.85); max-width: 620px; margin: 0 auto 1.8rem; }

/* ==========================================================================
   7. Contacto y formulario
   ========================================================================== */

.contacto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 3rem;
  background: var(--fondo-suave);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  padding: 2.8rem;
}

.contacto__datos h3 { color: var(--navy); margin-bottom: 1rem; }
.contacto__datos p  { color: var(--texto-suave); margin-bottom: .9rem; }
.contacto__datos a  { color: var(--blue); text-decoration: none; font-weight: 600; }
.contacto__datos a:hover { text-decoration: underline; }

form { display: flex; flex-direction: column; gap: 1rem; }

label { font-size: .9rem; font-weight: 600; color: var(--texto); }

input, textarea {
  width: 100%;
  padding: .8rem .9rem;
  border: 1px solid #CFD8E3;
  border-radius: var(--radio);
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(46, 109, 180, .15);
}

button[type="submit"] {
  background: var(--navy);
  color: #fff;
  border: 0;
  padding: .95rem;
  border-radius: var(--radio);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background .25s, transform .2s;
}
button[type="submit"]:hover:not(:disabled) { background: var(--blue); transform: translateY(-2px); }
button[type="submit"]:disabled { opacity: .65; cursor: progress; }

.form__nota { font-size: .82rem; color: var(--texto-suave); }

.form__aviso {
  display: none;
  padding: .9rem 1rem;
  border-radius: var(--radio);
  font-size: .92rem;
}
.form__aviso.visible { display: block; }
.form__aviso--ok    { background: rgba(47,163,107,.12);  color: #1C6F49; border: 1px solid rgba(47,163,107,.35); }
.form__aviso--error { background: rgba(200, 60, 60, .1); color: #9B2C2C; border: 1px solid rgba(200,60,60,.3); }

/* Trampa antispam: invisible para las personas, visible para los robots */
.miel { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

/* ==========================================================================
   8. Botón flotante de WhatsApp
   ========================================================================== */

.wsp {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 1200;
  display: flex;
  align-items: center;
  gap: .55rem;
  background: var(--whatsapp);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: .8rem 1.3rem;
  border-radius: 50px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .22);
  transition: transform .2s, box-shadow .25s;
}
.wsp:hover { transform: scale(1.05); box-shadow: 0 10px 24px rgba(0,0,0,.28); }
.wsp svg { width: 20px; height: 20px; fill: currentColor; flex: 0 0 auto; }

/* ==========================================================================
   9. Pie de página
   ========================================================================== */

.pie {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, .75);
  margin-top: 4rem;
  padding: 3rem 1.5rem 1.5rem;
  /* espacio extra abajo para que el botón flotante de WhatsApp no tape nada */
  padding-bottom: 5.5rem;
}

.pie__contenido {
  max-width: var(--ancho);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2.5rem;
}

.pie__logo { width: 180px; background: #fff; border-radius: 8px; padding: .7rem 1rem; margin-bottom: 1rem; }
.pie h4 { color: #fff; margin-bottom: .9rem; font-size: 1rem; }
.pie ul { list-style: none; }
.pie li { margin-bottom: .5rem; }
.pie a { color: rgba(255,255,255,.75); text-decoration: none; }
.pie a:hover { color: #fff; text-decoration: underline; }

.pie__base {
  max-width: var(--ancho);
  margin: 2.5rem auto 0;
  padding-top: 1.3rem;
  border-top: 1px solid rgba(255, 255, 255, .12);
  text-align: center;
  font-size: .87rem;
  color: rgba(255, 255, 255, .55);
}

/* ==========================================================================
   10. Aparición al hacer scroll
   ========================================================================== */

.revelar { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.revelar.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .revelar { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   11. Móvil
   ========================================================================== */

@media (max-width: 860px) {
  .nav__menu { display: block; }

  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--linea);
    box-shadow: 0 12px 24px rgba(27, 42, 107, .1);
    max-height: 0;
    overflow: hidden;
    transition: max-height .32s ease;
  }

  .nav__links.abierto { max-height: 420px; }

  .nav__links li { border-top: 1px solid var(--linea); }
  .nav__links a  { display: block; padding: 1rem 1.5rem; }
  .nav__links a:not(.btn)::after { display: none; }
  .nav__links .btn { border-radius: 0; text-align: center; }

  .nav { position: relative; }
  .nav__logo img { height: 60px; }

  .seccion  { padding: 3.2rem 1.2rem; }
  .contacto { padding: 1.8rem; gap: 2rem; }
  .hero__banda { padding: 2rem 1.2rem 3.5rem; }
  .wsp span { display: none; }
  .wsp { padding: .95rem; border-radius: 50%; }
}