/* =========================================================
   Puerta Segura — Hoja de estilos
   Blog de ciberseguridad para personas no técnicas
   Metáfora: cuidar tu vida digital como cuidas tu casa
   ========================================================= */

/* ----------  Variables de color y diseño  ---------- */
:root {
  --azul: #1f4e6b;
  --azul-oscuro: #163a50;
  --durazno: #f2a679;
  --durazno-oscuro: #e08b5b;
  --crema: #fbf7f2;
  --blanco: #ffffff;
  --texto: #1c2434;
  --texto-suave: #4a5568;
  --borde: #ece3d8;

  --sombra-sm: 0 1px 3px rgba(28, 36, 52, 0.08);
  --sombra-md: 0 6px 20px rgba(28, 36, 52, 0.08);
  --sombra-lg: 0 16px 40px rgba(31, 78, 107, 0.14);

  --radio: 16px;
  --radio-sm: 10px;
  --ancho-max: 1120px;

  --fuente-titulo: "Fraunces", Georgia, "Times New Roman", serif;
  --fuente-cuerpo: "Inter", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--fuente-cuerpo);
  color: var(--texto);
  background-color: var(--crema);
  line-height: 1.6;
  font-size: 17px;
  min-height: 100vh;
}

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

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

a:hover {
  text-decoration: underline;
}

/* ----------  Accesibilidad: foco visible  ---------- */
:focus-visible {
  outline: 3px solid var(--durazno);
  outline-offset: 3px;
  border-radius: 4px;
}

.saltar-enlace {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--azul);
  color: var(--blanco);
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radio-sm) 0;
  z-index: 200;
}

.saltar-enlace:focus {
  left: 0;
}

/* ----------  Contenedor  ---------- */
.contenedor {
  width: 100%;
  max-width: var(--ancho-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ----------  Tipografía  ---------- */
h1,
h2,
h3 {
  font-family: var(--fuente-titulo);
  color: var(--azul);
  line-height: 1.15;
  font-weight: 600;
  text-wrap: balance;
}

.seccion {
  padding: 4rem 0;
}

.seccion-cabecera {
  max-width: 640px;
  margin-bottom: 2.5rem;
}

.seccion-etiqueta {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--durazno-oscuro);
  margin-bottom: 0.75rem;
}

.seccion-titulo {
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  margin-bottom: 0.75rem;
}

.seccion-texto {
  color: var(--texto-suave);
  font-size: 1.05rem;
}

/* ----------  Botones  ---------- */
.boton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--fuente-cuerpo);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease,
    box-shadow 0.15s ease;
  text-decoration: none;
}

.boton:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.boton-primario {
  background-color: var(--durazno);
  color: var(--texto);
}

.boton-primario:hover {
  background-color: var(--durazno-oscuro);
  box-shadow: var(--sombra-md);
}

.boton-secundario {
  background-color: transparent;
  color: var(--azul);
  border-color: var(--azul);
}

.boton-secundario:hover {
  background-color: var(--azul);
  color: var(--blanco);
}

/* =========================================================
   Header
   ========================================================= */
.encabezado {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(251, 247, 242, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--borde);
}

.encabezado-interno {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--fuente-titulo);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--azul);
}

.logo:hover {
  text-decoration: none;
}

.logo svg {
  flex-shrink: 0;
}

/* ----------  Navegación  ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-lista {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-lista a {
  color: var(--texto);
  font-weight: 500;
  font-size: 0.98rem;
  padding: 0.25rem 0;
}

.nav-lista a:hover {
  color: var(--azul);
  text-decoration: none;
}

.nav .boton {
  padding: 0.6rem 1.2rem;
}

/* ----------  Botón hamburguesa  ---------- */
.menu-boton {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--borde);
  border-radius: var(--radio-sm);
  cursor: pointer;
}

.menu-boton span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--azul);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.menu-boton[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-boton[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-boton[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  padding: 3.5rem 0 4.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.hero-titulo {
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  margin-bottom: 1.25rem;
}

.hero-subtitulo {
  font-size: 1.15rem;
  color: var(--texto-suave);
  margin-bottom: 2rem;
  max-width: 40ch;
}

.hero-botones {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-ilustracion {
  display: flex;
  justify-content: center;
}

.hero-ilustracion svg {
  width: 100%;
  max-width: 360px;
  height: auto;
  filter: drop-shadow(var(--sombra-lg));
}

/* =========================================================
   Tarjetas de artículos
   ========================================================= */
.grid-articulos {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.tarjeta {
  background-color: var(--blanco);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 1.75rem;
  box-shadow: var(--sombra-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

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

.etiqueta-tema {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--azul);
  background-color: rgba(31, 78, 107, 0.08);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.tarjeta-titulo {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.tarjeta-titulo a {
  color: var(--azul);
}

.tarjeta-titulo a:hover {
  color: var(--durazno-oscuro);
  text-decoration: none;
}

.tarjeta-resumen {
  color: var(--texto-suave);
  font-size: 0.98rem;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.tarjeta-meta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--texto-suave);
}

/* =========================================================
   Sección Temas
   ========================================================= */
.temas {
  background-color: var(--blanco);
}

.grid-temas {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.tema-tarjeta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1.75rem;
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  background-color: var(--crema);
  color: var(--texto);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tema-tarjeta:hover {
  transform: translateY(-4px);
  box-shadow: var(--sombra-md);
  text-decoration: none;
}

.tema-icono {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background-color: rgba(242, 166, 121, 0.25);
}

.tema-nombre {
  font-family: var(--fuente-titulo);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--azul);
}

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

/* =========================================================
   Boletín / suscripción
   ========================================================= */
.boletin {
  background-color: var(--azul);
  color: var(--blanco);
  border-radius: var(--radio);
  padding: 3rem 2rem;
  text-align: center;
  margin: 4rem auto;
}

.boletin h2 {
  color: var(--blanco);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin-bottom: 0.75rem;
}

.boletin p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 46ch;
  margin: 0 auto 2rem;
}

.boletin-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  max-width: 520px;
  margin: 0 auto;
}

.boletin-form input[type="email"] {
  flex: 1 1 240px;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  border: 2px solid transparent;
  font-size: 1rem;
  font-family: var(--fuente-cuerpo);
  color: var(--texto);
}

.boletin-form input[type="email"]:focus-visible {
  outline: 3px solid var(--durazno);
  outline-offset: 2px;
}

.boletin-mensaje {
  margin-top: 1rem;
  font-weight: 600;
  color: var(--durazno);
  min-height: 1.4rem;
}

/* =========================================================
   Footer
   ========================================================= */
.pie {
  background-color: var(--azul-oscuro);
  color: rgba(255, 255, 255, 0.8);
  padding: 3rem 0 2rem;
}

.pie-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 2rem;
}

.pie .logo {
  color: var(--blanco);
  margin-bottom: 0.75rem;
}

.pie-descripcion {
  max-width: 34ch;
  font-size: 0.95rem;
}

.pie-enlaces {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}

.pie-columna h3 {
  color: var(--blanco);
  font-size: 1rem;
  font-family: var(--fuente-cuerpo);
  font-weight: 700;
  margin-bottom: 0.9rem;
}

.pie-columna ul {
  list-style: none;
}

.pie-columna li {
  margin-bottom: 0.6rem;
}

.pie-columna a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
}

.pie-columna a:hover {
  color: var(--durazno);
}

.pie-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1.5rem;
  font-size: 0.88rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
}

/* =========================================================
   Página de artículo
   ========================================================= */
.articulo {
  padding: 2.5rem 0 4rem;
}

.articulo-contenido {
  max-width: 720px;
  margin: 0 auto;
}

.volver {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 2rem;
  color: var(--azul);
}

.articulo-titulo {
  font-size: clamp(2rem, 5vw, 2.8rem);
  margin: 1rem 0 1.25rem;
}

.articulo-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--borde);
  color: var(--texto-suave);
  font-size: 0.92rem;
}

.articulo-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.articulo-cuerpo h2 {
  font-size: 1.5rem;
  margin: 2.25rem 0 1rem;
}

.articulo-cuerpo p {
  margin-bottom: 1.25rem;
  color: var(--texto);
}

.articulo-cuerpo ul {
  margin: 0 0 1.5rem 1.25rem;
  color: var(--texto);
}

.articulo-cuerpo li {
  margin-bottom: 0.6rem;
}

.articulo-cuerpo strong {
  color: var(--azul);
}

/* ----------  Callout destacado  ---------- */
.callout {
  display: flex;
  gap: 1rem;
  background-color: rgba(242, 166, 121, 0.18);
  border-left: 4px solid var(--durazno);
  border-radius: var(--radio-sm);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}

.callout-icono {
  flex-shrink: 0;
  color: var(--durazno-oscuro);
}

.callout-titulo {
  font-family: var(--fuente-titulo);
  font-weight: 600;
  color: var(--azul);
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
}

.callout p {
  margin: 0;
  color: var(--texto);
  font-size: 0.97rem;
}

/* =========================================================
   Responsive — móvil primero mejorado hacia arriba
   ========================================================= */
@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }

  .hero-subtitulo {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-botones {
    justify-content: center;
  }

  .hero-ilustracion {
    order: -1;
  }

  .hero-ilustracion svg {
    max-width: 260px;
  }

  .grid-articulos,
  .grid-temas {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .menu-boton {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--crema);
    border-bottom: 1px solid var(--borde);
    box-shadow: var(--sombra-md);
    padding: 1rem 1.25rem 1.5rem;
    transform: translateY(-120%);
    transition: transform 0.28s ease;
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }

  .nav[data-abierto="true"] {
    transform: translateY(0);
  }

  .nav-lista {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-lista li {
    border-bottom: 1px solid var(--borde);
  }

  .nav-lista a {
    display: block;
    padding: 0.9rem 0;
    font-size: 1.05rem;
  }

  .nav .boton {
    margin-top: 1rem;
    width: 100%;
  }

  .grid-articulos,
  .grid-temas {
    grid-template-columns: 1fr;
  }

  .pie-grid {
    flex-direction: column;
    gap: 1.5rem;
  }
}

/* ----------  Respeta prefers-reduced-motion  ---------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .boton:hover,
  .tarjeta:hover,
  .tema-tarjeta:hover {
    transform: none;
  }
}