/* ============================================
   ALFA DIGITAL — CSS Base
   Modo visual: Híbrido (Opción A)
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Figtree:wght@700&family=Open+Sans:wght@400;600&display=swap');

/* --- Variables --- */
:root {
  /* Colores */
  --azul-cielo:    #52BCDB;
  --azul-medio:    #2878BB;
  --azul-marino:   #1A4E8C;
  --azul-profundo: #0F2D5C;
  --carbon:        #3D3D3D;
  --blanco:        #FFFFFF;

  /* Tipografía */
  --font-titulo: 'Figtree', sans-serif;
  --font-cuerpo: 'Open Sans', sans-serif;

  /* Escala desktop */
  --h1: 52px;
  --h2: 36px;
  --h3: 22px;
  --texto: 16px;
  --caption: 13px;

  /* Espaciado entre secciones */
  --gap-seccion: 80px;
}

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cuerpo);
  font-size: var(--texto);
  color: var(--azul-profundo);
  background-color: var(--blanco);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--azul-cielo);
  text-decoration: none;
}

a:hover {
  color: var(--azul-medio);
}

ul {
  list-style: none;
}

/* --- Tipografía base --- */
h1, h2, h3, h4 {
  font-family: var(--font-titulo);
  font-weight: 700;
  line-height: 1.2;
  color: inherit;
}

h1 { font-size: var(--h1); }
h2 { font-size: var(--h2); }
h3 { font-size: var(--h3); }

p {
  font-size: var(--texto);
  font-weight: 400;
}

small, .caption {
  font-size: var(--caption);
  font-weight: 400;
}

/* --- Contenedor principal --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Secciones --- */
section {
  padding: var(--gap-seccion) 0;
}

/* ============================================
   NAVBAR
   ============================================ */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--azul-profundo);
  padding: 16px 0;
  transition: box-shadow 0.3s ease;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar__logo img {
  height: 40px;
  width: auto;
}

.brand {
  font-family: var(--font-titulo);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--blanco);
}

.brand--accent {
  color: var(--azul-cielo);
}

.navbar__links {
  display: flex;
  gap: 32px;
}

.navbar__links a {
  color: var(--blanco);
  font-family: var(--font-cuerpo);
  font-size: 15px;
  font-weight: 600;
  transition: color 0.2s;
}

.navbar__links a:hover,
.navbar__links a.active {
  color: var(--azul-cielo);
}

/* Hamburger — solo mobile */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--blanco);
  transition: opacity 0.2s;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background-color: var(--azul-profundo);
  color: var(--blanco);
  padding: 48px 0 24px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer__brand img {
  height: 48px;
  width: auto;
  margin-bottom: 16px;
}

.footer__brand p {
  font-size: var(--caption);
  color: rgba(255, 255, 255, 0.7);
  max-width: 280px;
}

.footer__links h4 {
  font-size: 14px;
  font-family: var(--font-cuerpo);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--azul-cielo);
  margin-bottom: 16px;
}

.footer__links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  transition: color 0.2s;
}

.footer__links a:hover {
  color: var(--azul-cielo);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__bottom p {
  font-size: var(--caption);
  color: rgba(255, 255, 255, 0.5);
}

.footer__social a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--caption);
  font-weight: 600;
  transition: color 0.2s;
}

.footer__social a:hover {
  color: var(--azul-cielo);
}

/* ============================================
   BOTONES
   ============================================ */

.btn {
  display: inline-block;
  font-family: var(--font-cuerpo);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 6px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  text-align: center;
  white-space: nowrap;
}

/* CTA principal */
.btn--primary {
  background-color: var(--azul-cielo);
  color: var(--blanco);
  border-color: var(--azul-cielo);
  box-shadow: 0 2px 10px rgba(82, 188, 219, 0.35);
}

.btn--primary:hover {
  background-color: var(--azul-medio);
  border-color: var(--azul-medio);
  color: var(--blanco);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(40, 120, 187, 0.4);
}

/* Secundario (outline sobre fondo oscuro) */
.btn--outline {
  background-color: transparent;
  color: var(--blanco);
  border-color: var(--blanco);
}

.btn--outline:hover {
  background-color: var(--blanco);
  color: var(--azul-profundo);
}

/* ============================================
   CARDS DE SERVICIOS
   ============================================ */

.card {
  background-color: var(--blanco);
  border: 1px solid rgba(26, 78, 140, 0.1);
  border-top: 3px solid var(--azul-cielo);
  border-radius: 12px;
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  box-shadow: 0 2px 8px rgba(15, 45, 92, 0.06), 0 1px 2px rgba(15, 45, 92, 0.04);
  transition: box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  box-shadow: 0 16px 40px rgba(15, 45, 92, 0.14), 0 4px 12px rgba(15, 45, 92, 0.08);
  transform: translateY(-5px);
}

.card__icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(82, 188, 219, 0.2) 0%, rgba(40, 120, 187, 0.1) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card__icon svg {
  width: 26px;
  height: 26px;
  stroke: var(--azul-cielo);
  fill: none;
}

.card__title {
  font-size: var(--h3);
  color: var(--azul-profundo);
}

.card__text {
  font-size: var(--texto);
  color: var(--carbon);
  line-height: 1.7;
  flex: 1;
}

/* Grid de cards (4 servicios) */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

/* ============================================
   UTILIDADES
   ============================================ */

/* Secciones oscuras (hero, footer) */
.section--dark {
  background-color: var(--azul-profundo);
  color: var(--blanco);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: var(--blanco);
}

/* Secciones con fondo marino suave */
.section--tinted {
  background-color: #EEF8FC;
}

/* Centrado de texto */
.text-center { text-align: center; }

/* Acento de color en títulos */
.highlight { color: var(--azul-cielo); }

/* Subtítulo de sección */
.section__label {
  font-size: var(--caption);
  font-family: var(--font-cuerpo);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--azul-cielo);
  margin-bottom: 12px;
}

.section__title {
  margin-bottom: 16px;
}

.section__desc {
  max-width: 600px;
  color: var(--carbon);
  margin-bottom: 48px;
}

.section--dark .section__desc {
  color: rgba(255, 255, 255, 0.75);
}

/* ============================================
   HERO
   ============================================ */

.hero {
  padding: 100px 0 90px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 65% 70% at 90% 35%, rgba(82, 188, 219, 0.13) 0%, transparent 55%),
    radial-gradient(ellipse 45% 50% at 15% 85%, rgba(40, 120, 187, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero__content {
  max-width: 680px;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero__desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================
   POR QUÉ ALFA DIGITAL
   ============================================ */

.porque__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 48px;
}

.porque__item {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-left: 24px;
  border-left: 3px solid var(--azul-cielo);
}

.porque__numero {
  font-family: var(--font-titulo);
  font-size: 40px;
  font-weight: 700;
  color: var(--azul-cielo);
  line-height: 1;
}

.porque__item h3 {
  font-size: var(--h3);
  color: var(--azul-profundo);
}

.porque__item p {
  color: var(--carbon);
  line-height: 1.7;
}

/* ============================================
   SERVICIOS — layout detalle
   ============================================ */

.servicio__layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 56px;
  align-items: start;
}

.servicio__layout--reverse {
  grid-template-columns: 1fr 180px;
}

.servicio__layout--reverse .servicio__icono {
  order: 2;
}

.servicio__layout--reverse .servicio__contenido {
  order: 1;
}

.servicio__icono {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, rgba(82, 188, 219, 0.18) 0%, rgba(40, 120, 187, 0.08) 100%);
  border-radius: 16px;
  margin-top: 8px;
}

.servicio__icono svg {
  width: 52px;
  height: 52px;
  stroke: var(--azul-cielo);
  fill: none;
}

.servicio__contenido {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.servicio__contenido h2 {
  color: var(--azul-profundo);
}

.servicio__contenido p {
  color: var(--carbon);
  line-height: 1.75;
}

/* ============================================
   CONTACTO
   ============================================ */

.contacto {
  padding: var(--gap-seccion) 0;
}

.contacto__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 56px;
}

.contacto__persona {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  background-color: var(--blanco);
  border: 1px solid rgba(26, 78, 140, 0.1);
  border-top: 3px solid var(--azul-cielo);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 2px 8px rgba(15, 45, 92, 0.06), 0 1px 2px rgba(15, 45, 92, 0.04);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.contacto__persona:hover {
  box-shadow: 0 10px 28px rgba(15, 45, 92, 0.12);
  transform: translateY(-3px);
}

.contacto__avatar {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
}

.contacto__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.contacto__info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contacto__rol {
  font-size: var(--caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--azul-cielo);
}

.contacto__info h3 {
  font-size: var(--h3);
  color: var(--azul-profundo);
}

.contacto__desc {
  font-size: 14px;
  color: var(--carbon);
  line-height: 1.6;
}

.contacto__acciones {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.contacto__acciones .btn {
  padding: 10px 20px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Outline sobre fondo claro */
.btn--outline-dark {
  background-color: transparent;
  color: var(--azul-profundo);
  border: 2px solid var(--azul-profundo);
  font-family: var(--font-cuerpo);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
  text-align: center;
}

.btn--outline-dark:hover {
  background-color: var(--azul-profundo);
  color: var(--blanco);
}

.contacto__redes {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 8px;
  border-top: 1px solid rgba(26, 78, 140, 0.12);
}

.contacto__redes p {
  font-size: 14px;
  color: var(--carbon);
}

.contacto__red {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--azul-medio);
}

.contacto__red:hover {
  color: var(--azul-cielo);
}

/* ============================================
   PERFILES — sobre nosotros
   ============================================ */

.perfil__layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 64px;
  align-items: start;
}

.perfil__layout--reverse {
  grid-template-columns: 1fr 320px;
}

.perfil__layout--reverse .perfil__foto {
  order: 2;
}

.perfil__layout--reverse .perfil__contenido {
  order: 1;
}

.perfil__foto img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: top;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(15, 45, 92, 0.14);
}

.perfil__contenido {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 8px;
}

.perfil__contenido h2 {
  color: var(--azul-profundo);
  margin-bottom: 0;
}

.perfil__cargo {
  font-size: 14px;
  font-weight: 600;
  color: var(--azul-cielo);
  margin-bottom: 8px;
}

.perfil__contenido p {
  color: var(--carbon);
  line-height: 1.75;
}

/* ============================================
   HERO DE SECCIÓN (páginas internas)
   ============================================ */

.page-hero {
  padding: 64px 0 56px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 80% 40%, rgba(82, 188, 219, 0.12) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  margin: 8px 0 16px;
}

.page-hero__desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  line-height: 1.7;
}

/* ============================================
   CTA FINAL
   ============================================ */

.cta-final {
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-final::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(82, 188, 219, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.cta-final .container {
  position: relative;
  z-index: 1;
}

.cta-final h2 {
  margin-bottom: 20px;
}

.cta-final__desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

/* ============================================
   ANIMACIONES DE ENTRADA
   ============================================ */

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in { opacity: 0; }

.fade-in.visible {
  animation: fadeInUp 0.55s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.cards-grid .fade-in:nth-child(2) { animation-delay: 0.08s; }
.cards-grid .fade-in:nth-child(3) { animation-delay: 0.16s; }
.cards-grid .fade-in:nth-child(4) { animation-delay: 0.24s; }

.porque__grid .fade-in:nth-child(2) { animation-delay: 0.1s; }
.porque__grid .fade-in:nth-child(3) { animation-delay: 0.2s; }

@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1 !important; animation: none !important; }
}

/* Navbar scrolled */
.navbar.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.28);
}

/* ============================================
   MOBILE — Navbar + Footer
   ============================================ */

/* --- Mobile (375px base) --- */
@media (max-width: 768px) {
  :root {
    --h1: 32px;
    --h2: 26px;
    --h3: 18px;
    --texto: 15px;
    --caption: 12px;
    --gap-seccion: 48px;
  }

  .container {
    padding: 0 16px;
  }

  /* Navbar mobile */
  .navbar__links {
    display: none;
    flex-direction: column;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--azul-profundo);
    padding: 8px 0 16px;
  }

  .navbar__links.open {
    display: flex;
  }

  .navbar__links a {
    padding: 12px 24px;
  }

  .navbar__toggle {
    display: flex;
  }

  .navbar {
    position: sticky;
  }

  /* Contacto mobile */
  .contacto__grid {
    grid-template-columns: 1fr;
  }

  .contacto__persona {
    flex-direction: column;
    padding: 24px;
  }

  .contacto__redes {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  /* Perfiles mobile */
  .perfil__layout,
  .perfil__layout--reverse {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .perfil__layout--reverse .perfil__foto {
    order: 0;
  }

  .perfil__foto img {
    aspect-ratio: 4 / 3;
    object-position: center top;
  }

  /* Servicios detalle mobile */
  .servicio__layout,
  .servicio__layout--reverse {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .servicio__layout--reverse .servicio__icono {
    order: 0;
  }

  .servicio__icono {
    width: 80px;
    height: 80px;
  }

  .servicio__icono svg {
    width: 36px;
    height: 36px;
  }

  /* Por qué mobile */
  .porque__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* Hero mobile */
  .hero {
    padding: 64px 0 56px;
  }

  .hero__desc {
    font-size: 15px;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
    text-align: center;
  }

  /* Cards mobile */
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 24px;
  }

  /* Footer mobile */
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}