/* BriHogar – styles v1
   Al modificar este archivo, renombrá a styles.v2.css y actualizá el <link> en index.html y 404.html
   (los assets se sirven con caché inmutable de un año). */

:root {
  --azul: #2170AD;
  --azul-oscuro: #17507D;
  --verde: #2F8B4E;
  --verde-oscuro: #246E3D;
  --negro: #17181A;
  --gris: #5B6470;
  --gris-linea: #D6DEE6;
  --tinta: #EAF3FA;
  --blanco: #FFFFFF;

  --font-titulos: "Segoe UI", "Segoe UI Variable Display", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-texto: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;

  --ancho: 72rem;
  --radio: 0.5rem;
  --radio-boton: 999px;
  --sombra: 0 6px 24px rgba(23, 24, 26, 0.08);
  --sombra-lg: 0 20px 44px rgba(23, 80, 125, 0.16);
  --grad-verde: linear-gradient(135deg, var(--verde), var(--verde-oscuro));
  --grad-azul: linear-gradient(135deg, var(--azul), var(--azul-oscuro));
  --header-h: 4.5rem;
  --transicion: 180ms ease;
  --transicion-lenta: 320ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-texto);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--negro);
  background: var(--blanco);
}
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3 { font-family: var(--font-titulos); line-height: 1.15; margin: 0 0 0.6em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 5.5vw, 3.25rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 4vw, 2.25rem); font-weight: 700; color: var(--azul-oscuro); }
h3 { font-size: 1.25rem; font-weight: 600; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: var(--azul); }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--azul);
  outline-offset: 3px;
}
.container { width: min(100% - 2.5rem, var(--ancho)); margin-inline: auto; }
.icon { width: 1.25em; height: 1.25em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.4rem;
  color: var(--verde); font-weight: 700; font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.08em;
  margin: 0 0 0.6em;
}
.section-dark .eyebrow { color: #8FD4A6; }

/* Animaciones de entrada al hacer scroll (mejora progresiva: sin JS, todo queda visible) */
.js .reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.js .reveal.is-visible { opacity: 1; transform: none; }
.stagger > :nth-child(1) { transition-delay: 0ms; }
.stagger > :nth-child(2) { transition-delay: 70ms; }
.stagger > :nth-child(3) { transition-delay: 140ms; }
.stagger > :nth-child(4) { transition-delay: 210ms; }
.stagger > :nth-child(5) { transition-delay: 280ms; }
.stagger > :nth-child(6) { transition-delay: 350ms; }

.skip-link {
  position: absolute; left: 1rem; top: -4rem;
  background: var(--negro); color: var(--blanco);
  padding: 0.6rem 1rem; border-radius: var(--radio); z-index: 100;
}
.skip-link:focus { top: 1rem; }

/* Botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radio-boton);
  font-weight: 600; text-decoration: none;
  border: 2px solid transparent;
  transition: background-color var(--transicion), border-color var(--transicion), transform var(--transicion), box-shadow var(--transicion);
}
.btn-wa { background: var(--grad-verde); color: var(--blanco); box-shadow: 0 10px 22px rgba(47, 139, 78, 0.28); }
.btn-wa:hover, .btn-wa:focus-visible { background: var(--verde-oscuro); transform: translateY(-2px); box-shadow: 0 14px 26px rgba(47, 139, 78, 0.34); }
.btn-outline { background: transparent; color: var(--azul); border-color: var(--azul); }
.btn-outline:hover, .btn-outline:focus-visible { background: var(--tinta); transform: translateY(-2px); }
.btn-lg { padding: 1rem 1.7rem; font-size: 1.1rem; }
.btn-xl { padding: 1.1rem 2.2rem; font-size: 1.2rem; }
.btn:active { transform: translateY(1px); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--gris-linea);
  backdrop-filter: blur(6px);
  transition: box-shadow var(--transicion);
}
.site-header.is-scrolled { box-shadow: 0 4px 18px rgba(23, 24, 26, 0.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 1rem; }
.brand img { width: auto; height: 3.9rem; }
.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.75rem; height: 2.75rem;
  background: none; border: 0; border-radius: var(--radio);
  color: var(--negro); cursor: pointer;
}
.nav-toggle .icon { width: 1.6rem; height: 1.6rem; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-menu { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

.site-nav {
  display: none;
  position: absolute; left: 0; right: 0; top: var(--header-h);
  background: var(--blanco);
  border-bottom: 1px solid var(--gris-linea);
  padding: 1rem 1.25rem 1.5rem;
  box-shadow: var(--sombra);
}
.site-nav.is-open { display: block; }
.site-nav ul { display: flex; flex-direction: column; }
.site-nav ul a {
  display: block; padding: 0.75rem 0.25rem;
  color: var(--negro); text-decoration: none; font-weight: 600;
  border-bottom: 1px solid var(--gris-linea);
}
.site-nav ul a:hover { color: var(--azul); }
.btn-nav { margin-top: 1rem; width: 100%; }

@media (min-width: 60rem) {
  .nav-toggle { display: none; }
  .site-nav {
    display: flex; align-items: center; gap: 1.5rem;
    position: static; background: none; border: 0; padding: 0; box-shadow: none;
  }
  .site-nav ul { flex-direction: row; gap: 1.25rem; }
  .site-nav ul a {
    padding: 0.25rem 0; border: 0; font-weight: 500;
    position: relative; transition: color var(--transicion);
  }
  .site-nav ul a::after {
    content: ""; position: absolute; left: 0; right: 100%; bottom: -2px;
    height: 2px; background: var(--verde);
    transition: right var(--transicion-lenta);
  }
  .site-nav ul a:hover::after, .site-nav ul a:focus-visible::after { right: 0; }
  .btn-nav { margin: 0; width: auto; }
}

/* Hero */
.hero {
  position: relative; overflow: hidden; isolation: isolate;
  color: var(--blanco);
  padding: 5rem 0 6rem;
}
.hero-bg {
  position: absolute; inset: 0; z-index: -2;
  width: 100%; height: 100%; object-fit: cover; object-position: center;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(100deg, rgba(10, 20, 28, 0.86) 0%, rgba(10, 20, 28, 0.6) 45%, rgba(10, 20, 28, 0.32) 100%);
}
.hero-inner { position: relative; display: grid; gap: 2rem; align-items: center; }
.hero-copy { max-width: 40rem; }

.hero-copy > * {
  opacity: 0; transform: translateY(16px);
  animation: heroFadeUp 0.7s ease forwards;
}
.hero-copy > .hero-eyebrow { animation-delay: 0.05s; }
.hero-copy > h1 { animation-delay: 0.15s; }
.hero-copy > .lead { animation-delay: 0.25s; }
.hero-copy > .hero-actions { animation-delay: 0.35s; }
.hero-copy > .hero-points { animation-delay: 0.45s; }
@keyframes heroFadeUp { to { opacity: 1; transform: none; } }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: var(--blanco); color: var(--azul-oscuro);
  padding: 0.4rem 0.9rem; border-radius: var(--radio-boton);
  font-weight: 600; font-size: 0.85rem; box-shadow: var(--sombra);
  margin-bottom: 1rem;
}
.hero-eyebrow .icon { width: 1rem; height: 1rem; color: var(--verde); }

.hero-copy h1 { color: var(--blanco); text-shadow: 0 2px 16px rgba(0, 0, 0, 0.35); }
.hero-copy .lead { font-size: 1.15rem; color: rgba(255, 255, 255, 0.92); max-width: 34rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.5rem 0; }
.hero .btn-outline {
  background: rgba(255, 255, 255, 0.95); color: var(--azul-oscuro); border-color: var(--blanco);
}
.hero .btn-outline:hover, .hero .btn-outline:focus-visible { background: var(--blanco); }
.hero-points { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.hero-points li {
  display: flex; align-items: center; gap: 0.45rem;
  background: var(--blanco); border: 1px solid var(--gris-linea);
  color: var(--azul-oscuro); font-weight: 600; font-size: 0.88rem;
  padding: 0.5rem 0.9rem; border-radius: var(--radio-boton);
}
.hero-points .icon { width: 1rem; height: 1rem; color: var(--verde); }

@media (min-width: 60rem) {
  .hero { padding: 7rem 0; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-copy > * { opacity: 1; transform: none; animation: none; }
}

/* Barra de confianza */
.trust-bar-wrap { position: relative; z-index: 2; margin-top: -1.5rem; padding: 0 0 1rem; }
.trust-bar {
  display: flex; flex-wrap: wrap; gap: 1.25rem;
  background: var(--blanco); border-radius: var(--radio);
  box-shadow: var(--sombra-lg); border: 1px solid var(--gris-linea);
  padding: 1.25rem 1.5rem;
}
.trust-bar li { display: flex; align-items: center; gap: 0.7rem; flex: 1 1 12rem; }
.trust-bar .trust-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.5rem; height: 2.5rem; border-radius: 50%; flex-shrink: 0;
  background: var(--tinta); color: var(--verde);
}
.trust-bar .trust-icon .icon { width: 1.3rem; height: 1.3rem; }
.trust-bar span:last-child { font-weight: 600; color: var(--azul-oscuro); font-size: 0.92rem; }
@media (min-width: 60rem) {
  .trust-bar-wrap { margin-top: -2.75rem; }
  .trust-bar li { flex: 1; }
}

/* Secciones */
.section { padding: 3.5rem 0; }
@media (min-width: 60rem) { .section { padding: 5.5rem 0; } }
.section-tint { background: var(--tinta); }
.section-dark { background: var(--azul-oscuro); color: var(--blanco); }
.section-dark h2, .section-dark h3 { color: var(--blanco); }
.section-dark .section-head p { color: rgba(255, 255, 255, 0.85); }
.section-head { max-width: 40rem; margin-bottom: 2.25rem; }
.section-head p { color: var(--gris); font-size: 1.1rem; margin: 0; }

/* Servicios */
.services { display: grid; gap: 1.5rem; }
.service {
  display: flex; flex-direction: column;
  background: var(--blanco);
  border: 1px solid var(--gris-linea);
  border-top: 5px solid var(--verde);
  border-radius: var(--radio);
  overflow: hidden;
  transition: transform var(--transicion-lenta), box-shadow var(--transicion-lenta), border-color var(--transicion-lenta);
}
.service:hover, .service:focus-within { transform: translateY(-6px); box-shadow: var(--sombra-lg); border-color: var(--azul); }
.service img { aspect-ratio: 8 / 5; object-fit: cover; transition: transform var(--transicion-lenta); }
.service:hover img { transform: scale(1.05); }
.service-body { display: flex; flex-direction: column; flex: 1; padding: 1.5rem; }
.service-body h3 { color: var(--azul-oscuro); }
.service-for { color: var(--gris); font-size: 0.95rem; margin-top: auto; }
@media (min-width: 45rem) { .services { grid-template-columns: repeat(2, 1fr); } }

/* Maquinaria */
#maquinaria { position: relative; overflow: hidden; }
#maquinaria::before {
  content: ""; position: absolute; z-index: 0; pointer-events: none;
  border-radius: 50%; filter: blur(60px);
  width: 22rem; height: 22rem; background: rgba(255, 255, 255, 0.06); top: -8rem; right: -6rem;
}
#maquinaria .container { position: relative; z-index: 1; }
.machines { display: grid; gap: 2rem; }
.machines li {
  border-left: 3px solid var(--verde); padding-left: 1.25rem;
  transition: transform var(--transicion-lenta);
}
.machines li:hover { transform: translateX(4px); }
.machines p { color: rgba(255, 255, 255, 0.85); margin: 0; }
.machine-icon {
  width: 3rem; height: 3rem; margin-bottom: 0.75rem; padding: 0.7rem;
  box-sizing: content-box; border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  fill: none; stroke: var(--blanco); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round;
  transition: background-color var(--transicion-lenta);
}
.machines li:hover .machine-icon { background: var(--verde); }
@media (min-width: 45rem) { .machines { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 60rem) { .machines { grid-template-columns: repeat(3, 1fr); } }

/* Pasos (sí es una secuencia: se numera) */
.steps { display: grid; gap: 1.75rem; counter-reset: paso; }
.steps li { position: relative; padding-left: 3.5rem; transition: transform var(--transicion-lenta); }
.steps li:hover { transform: translateY(-3px); }
.steps li::before {
  counter-increment: paso; content: counter(paso);
  position: absolute; left: 0; top: 0;
  width: 2.5rem; height: 2.5rem; border-radius: 50%;
  background: var(--grad-azul); color: var(--blanco);
  box-shadow: 0 8px 16px rgba(33, 112, 173, 0.3);
  font-family: var(--font-titulos); font-weight: 700; font-size: 1.1rem;
  display: grid; place-items: center; z-index: 1;
}
.steps h3 { color: var(--azul-oscuro); margin-bottom: 0.25em; }
.steps p { color: var(--gris); margin: 0; }
@media (min-width: 45rem) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 60rem) {
  .steps { grid-template-columns: repeat(4, 1fr); gap: 2rem; }
  .steps li:not(:last-child)::after {
    content: ""; position: absolute; top: 1.25rem; left: 3.5rem; right: -1rem;
    height: 2px; background: var(--gris-linea);
  }
}

/* Razones */
.reasons { display: grid; gap: 1.25rem; }
.reasons li {
  background: var(--blanco); padding: 1.25rem 1.5rem; border-radius: var(--radio);
  border: 1px solid var(--gris-linea);
  transition: transform var(--transicion-lenta), box-shadow var(--transicion-lenta);
}
.reasons li:hover { transform: translateY(-4px); box-shadow: var(--sombra); }
.reason-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 3rem; height: 3rem; border-radius: 50%;
  background: var(--tinta); color: var(--verde); margin-bottom: 0.75rem;
}
.reason-icon .icon { width: 1.5rem; height: 1.5rem; }
.reasons h3 { color: var(--azul-oscuro); font-size: 1.1rem; margin-bottom: 0.3em; }
.reasons p { color: var(--gris); margin: 0; }
@media (min-width: 45rem) { .reasons { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 60rem) { .reasons { grid-template-columns: repeat(3, 1fr); } }

/* Testimonios */
.testimonials { display: grid; gap: 1.25rem; }
.testimonials blockquote { margin: 0; background: var(--blanco); padding: 1.5rem; border-radius: var(--radio); border: 1px solid var(--gris-linea); }
.testimonials blockquote p { font-style: italic; }
.testimonials footer { color: var(--gris); font-size: 0.95rem; }
@media (min-width: 45rem) { .testimonials { grid-template-columns: repeat(3, 1fr); } }

/* FAQ */
.faq details { border-bottom: 1px solid var(--gris-linea); }
.faq summary {
  cursor: pointer; list-style: none;
  padding: 1rem 2.5rem 1rem 0; position: relative;
  font-weight: 600; font-size: 1.05rem; color: var(--azul-oscuro);
  transition: color var(--transicion);
}
.faq summary:hover { color: var(--azul); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0.5rem; top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem; line-height: 1; color: var(--verde);
  transition: transform var(--transicion);
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { color: var(--gris); padding: 0 0 1.25rem; margin: 0; max-width: 60ch; }

/* Contacto */
.section-cta { background: var(--grad-azul); color: var(--blanco); text-align: center; }
.section-cta .eyebrow { color: rgba(255, 255, 255, 0.85); justify-content: center; width: 100%; }
.section-cta .btn-wa { background: var(--blanco); color: var(--verde-oscuro); box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18); }
.section-cta .btn-wa:hover, .section-cta .btn-wa:focus-visible { background: var(--tinta); }
.contact h2 { color: var(--blanco); }
.contact > p { color: rgba(255, 255, 255, 0.9); font-size: 1.15rem; margin-bottom: 1.5rem; }
.contact-alt { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.5rem; margin-top: 1.75rem; }
.contact-alt li { display: flex; align-items: center; gap: 0.5rem; }
.contact-alt a { color: var(--blanco); font-weight: 600; transition: opacity var(--transicion); }
.contact-alt a:hover { opacity: 0.8; }

/* Footer */
.site-footer { background: var(--negro); color: rgba(255, 255, 255, 0.8); padding: 2.5rem 0; font-size: 0.95rem; }
.footer-inner { display: grid; gap: 1.5rem; }
.footer-brand { color: var(--blanco); font-weight: 700; font-family: var(--font-titulos); }
.footer-links { display: grid; gap: 0.4rem; }
.footer-links a { color: var(--blanco); }
.copy { margin: 0; color: rgba(255, 255, 255, 0.6); }
@media (min-width: 45rem) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .copy { grid-column: 1 / -1; }
}

/* Botón flotante WhatsApp */
.wa-float {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 60;
  width: 3.75rem; height: 3.75rem; border-radius: 50%;
  background: var(--verde); color: var(--blanco);
  display: grid; place-items: center;
  box-shadow: 0 8px 20px rgba(47, 139, 78, 0.4);
  transition: transform var(--transicion), background-color var(--transicion);
}
.wa-float::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid var(--verde); animation: waPulse 2.4s ease-out infinite;
}
@keyframes waPulse {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.7); opacity: 0; }
}
.wa-float .icon { width: 2rem; height: 2rem; }
.wa-float:hover, .wa-float:focus-visible { background: var(--verde-oscuro); transform: scale(1.05); }

/* 404 */
.page-404 { min-height: 70vh; display: grid; place-items: center; text-align: center; padding: 3rem 0; }
.page-404 h1 { color: var(--azul-oscuro); }

/* Movimiento reducido */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}