/* =========================================================
   KUSI SONCCO — styles.css
   Metodología: Mobile-first (base = celular, luego escritorio con min-width)
   ========================================================= */

/* ---------- 1. RESET BÁSICO ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

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

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

ul {
  list-style: none;
}

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

/* ---------- 2. VARIABLES (Design Tokens) ---------- */
:root {
  /* Colores (extraídos del logo) */
  --azul-oscuro: #0b2a6b;
  --azul-medio:  #1450a8;
  --azul-claro:  #2e9de3;
  --blanco:      #ffffff;
  --gris-claro:  #f5f7fa;
  --texto:       #1a1f2b;
  --texto-suave: #5b6472;
  --whatsapp:    #25d366;

  /* Tipografía */
  --font-titulos: 'Montserrat', system-ui, sans-serif;
  --font-cuerpo: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* Tamaños fluidos (se adaptan solos entre celular y escritorio) */
  --h1: clamp(2rem, 5vw + 1rem, 3.5rem);
  --h2: clamp(1.5rem, 3vw + 1rem, 2.5rem);
  --texto-base: clamp(1rem, 0.5vw + 0.9rem, 1.125rem);

  /* Layout */
  --max-width: 1200px;
  --radio: 10px;
  --sombra: 0 10px 30px rgba(11, 42, 107, 0.12);
  --header-height: 84px;
}

body {
  font-family: var(--font-cuerpo);
  color: var(--texto);
  font-size: var(--texto-base);
  line-height: 1.6;
  background: var(--blanco);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Botones reutilizables */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radio);
  font-weight: 700;
  font-family: var(--font-titulos);
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn--primary {
  background: var(--whatsapp);
  color: var(--blanco);
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.35);
}

.btn--outline {
  background: transparent;
  color: var(--azul-oscuro);
  border: 2px solid var(--azul-oscuro);
}

.btn:hover {
  transform: translateY(-2px);
}

/* ---------- 3. HEADER ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--blanco);
  box-shadow: 0 2px 12px rgba(11, 42, 107, 0.08);
  height: var(--header-height);
}

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo img {
  width: 160px;   /* en celular, para que no desborde */
  height: auto;
}

/* Nav: oculto en celular, se muestra al abrir el menú hamburguesa */
.nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--blanco);
  box-shadow: 0 10px 20px rgba(11, 42, 107, 0.08);
  transform: translateY(-150%);
  opacity: 0;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav.is-open {
  transform: translateY(0);
  opacity: 1;
}

.nav__list {
  display: flex;
  flex-direction: column;
  padding: 1rem 1.25rem 1.5rem;
}

.nav__list li a {
  display: block;
  padding: 0.85rem 0;
  font-weight: 600;
  color: var(--texto);
  border-bottom: 1px solid var(--gris-claro);
}

.nav__list li a:hover {
  color: var(--azul-claro);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--whatsapp);
  color: var(--blanco);
  padding: 0.55rem 0.9rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.85rem;
}

.btn-whatsapp__text {
  display: none; /* en celular solo mostramos el ícono para ahorrar espacio */
}

/* Botón hamburguesa */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
}

.nav-toggle span {
  height: 2px;
  width: 100%;
  background: var(--azul-oscuro);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 4. HERO ---------- */
.hero {
  padding-block: 3rem;
  background: linear-gradient(180deg, var(--gris-claro) 0%, var(--blanco) 100%);
  overflow: hidden;
}

.hero__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero__eyebrow {
  color: var(--azul-claro);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.hero__title {
  font-family: var(--font-titulos);
  font-size: var(--h1);
  font-weight: 800;
  line-height: 1.05;
  color: var(--azul-oscuro);
}

.hero__title span {
  color: var(--azul-claro);
}

.hero__subtitle {
  margin-top: 1.1rem;
  max-width: 42ch;
  color: var(--texto-suave);
}

.hero__cta {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero__image img {
  width: 100%;
  height: auto;
  border-radius: var(--radio);
  box-shadow: var(--sombra);
}

/* ---------- 5. SECCIÓN GENÉRICA (título + eyebrow reutilizable) ---------- */
.section__eyebrow {
  color: var(--azul-claro);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  text-align: center;
  margin-bottom: 0.5rem;
}

.section__title {
  font-family: var(--font-titulos);
  font-size: var(--h2);
  font-weight: 800;
  color: var(--azul-oscuro);
  text-align: center;
  margin-bottom: 2.5rem;
}

/* ---------- 6. SERVICIOS ---------- */
.servicios {
  padding-block: 4rem;
  background: var(--blanco);
}

.servicios__grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.card {
  background: var(--gris-claro);
  border-radius: var(--radio);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra);
}

.card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--azul-oscuro);
  color: var(--blanco);
}

.card__title {
  font-family: var(--font-titulos);
  color: var(--azul-oscuro);
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
}

.card__text {
  color: var(--texto-suave);
  font-size: 0.95rem;
}

/* ---------- 7. GALERÍA ---------- */
.galeria {
  padding-block: 4rem;
  background: var(--gris-claro);
}

.galeria__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.galeria__item {
  overflow: hidden;
  border-radius: var(--radio);
  aspect-ratio: 4 / 3;
}

.galeria__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.galeria__item:hover img {
  transform: scale(1.06);
}

/* ---------- 8. BLOG ---------- */
.blog {
  padding-block: 4rem;
  background: var(--blanco);
}

.blog__grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.blog-card {
  border-radius: var(--radio);
  overflow: hidden;
  box-shadow: var(--sombra);
}

.blog-card img {
  width: 100%;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

.blog-card__body {
  padding: 1.25rem;
}

.blog-card__date {
  font-size: 0.8rem;
  color: var(--azul-claro);
  font-weight: 700;
}

.blog-card__title {
  font-family: var(--font-titulos);
  font-size: 1.05rem;
  color: var(--texto);
  margin-block: 0.5rem 0.75rem;
}

.blog-card__link {
  color: var(--azul-oscuro);
  font-weight: 700;
  font-size: 0.9rem;
}

.blog__more {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--texto-suave);
}

.blog__more a {
  color: var(--azul-claro);
  font-weight: 700;
  text-decoration: underline;
}

/* ---------- 9. FOOTER ---------- */
.footer {
  background: var(--azul-oscuro);
  color: var(--blanco);
  padding-top: 3rem;
}

.footer__inner {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

.footer__brand img {
  height: 44px;
  width: auto;
  margin-bottom: 1rem;
  /* El logo tiene fondo transparente pero letras oscuras/azules,
     así que le damos un fondo blanco redondeado para que se lea bien */
  background: var(--blanco);
  border-radius: 6px;
  padding: 4px 8px;
}

.footer__brand p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
  max-width: 40ch;
}

.footer__col h4 {
  font-family: var(--font-titulos);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.footer__col ul li {
  margin-bottom: 0.6rem;
}

.footer__col ul li a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
}

.footer__col ul li a:hover {
  color: var(--blanco);
}

.footer__bottom {
  margin-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 1.25rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ---------- 10. PÁGINA DE ARTÍCULO (blog individual) ---------- */
.article {
  padding-block: 3rem;
}

.article__container {
  width: 100%;
  max-width: 760px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.article__eyebrow {
  color: var(--azul-claro);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}

.article__title {
  font-family: var(--font-titulos);
  font-size: var(--h1);
  font-weight: 800;
  color: var(--azul-oscuro);
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.article__meta {
  color: var(--texto-suave);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.article__cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radio);
  margin-bottom: 2rem;
  box-shadow: var(--sombra);
}

.article__body h2 {
  font-family: var(--font-titulos);
  color: var(--azul-oscuro);
  font-size: 1.4rem;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
}

.article__body h3 {
  font-family: var(--font-titulos);
  color: var(--azul-medio);
  font-size: 1.1rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.article__body p {
  margin-bottom: 1rem;
  color: var(--texto);
}

.article__body ul,
.article__body ol {
  margin: 0 0 1rem 1.25rem;
}

.article__body li {
  margin-bottom: 0.5rem;
}

.article__body strong {
  color: var(--azul-oscuro);
}

.article__body a {
  color: var(--azul-claro);
  font-weight: 700;
  text-decoration: underline;
}

.article__cta {
  margin-top: 2.5rem;
  padding: 1.75rem;
  background: var(--gris-claro);
  border-radius: var(--radio);
  text-align: center;
}

.article__cta p {
  margin-bottom: 1rem;
  color: var(--texto);
  font-weight: 600;
}

.article__back {
  display: inline-block;
  margin-top: 2rem;
  color: var(--azul-medio);
  font-weight: 700;
  font-size: 0.9rem;
}

.article__note {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--texto-suave);
  font-style: italic;
}

/* =========================================================
   BREAKPOINTS — Mobile-first: agregamos estilos a partir de aquí
   ========================================================= */

/* Tablet: 600px en adelante */
@media (min-width: 600px) {
  .btn-whatsapp__text {
    display: inline;
  }

  .logo img {
    width: 220px;
  }

  .galeria__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Escritorio: 900px en adelante */
@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .nav {
    position: static;
    transform: none;
    opacity: 1;
    box-shadow: none;
    background: transparent;
  }

  .nav__list {
    flex-direction: row;
    padding: 0;
    gap: 2rem;
  }

  .nav__list li a {
    border-bottom: none;
    padding: 0;
  }

  .hero__inner {
    flex-direction: row;
    align-items: center;
    padding-block: 2rem;
  }

  .hero__text,
  .hero__image {
    flex: 1;
  }

  .hero__cta {
    flex-wrap: nowrap;
  }

  .servicios__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .blog__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__inner {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

/* Escritorio grande: 1200px en adelante */
@media (min-width: 1200px) {
  .hero {
    padding-block: 5rem;
  }
}