/* AFJ-CSS-VERSION: FIX-TARJETAS-V2 (altura fija 560px en .service-card Y .service-card__inner) */
/* =========================================================
   TOKENS
   ========================================================= */
:root{
  --negro: #0D0D0D;
  --negro-suave: #1A1A1A;
  --blanco: #FAFAFA;
  --gris-concreto: #8B8680;
  --gris-linea: #3A3A3A;
  --rojo: #E31E30;
  --azul: #1D449A;

  --f-display: 'Archivo Black', sans-serif;
  --f-body: 'Work Sans', sans-serif;
  --f-mono: 'JetBrains Mono', monospace;

  --container: 1180px;
  --radius: 2px;
}

/* =========================================================
   RESET
   ========================================================= */
*,*::before,*::after{ box-sizing: border-box; margin:0; padding:0; }
html{ scroll-behavior: smooth; }
body{
  font-family: var(--f-body);
  background: var(--blanco);
  color: var(--negro);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul,ol{ list-style:none; }
button{ font-family:inherit; cursor:pointer; border:none; background:none; }
input,textarea,select{ font-family:inherit; font-size:1rem; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior:auto !important; }
}

:focus-visible{
  outline: 3px solid var(--rojo);
  outline-offset: 2px;
}

.container{
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* =========================================================
   BOTONES
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 14px 28px;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  border: 2px solid transparent;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.btn--primary{
  background: var(--rojo);
  color: var(--negro);
}
.btn--primary:hover{ transform: translateY(-2px); }
.btn--ghost{
  border-color: var(--negro);
  color: var(--negro);
}
.btn--ghost:hover{ background: var(--negro); color: var(--blanco); }
.btn--nav{
  padding: 10px 20px;
  background: transparent;
  border-color: var(--rojo);
  color: var(--rojo);
}
.btn--nav:hover{ background: var(--rojo); color: var(--negro); }
.btn--full{ width:100%; justify-content:center; }

/* =========================================================
   HEADER
   ========================================================= */
.header{
  position: fixed;
  top:0; left:0; right:0;
  z-index: 100;
  background: rgba(250,250,250,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid transparent;
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height: 76px;
  gap: 24px;
}
.logo{ display:flex; align-items:center; gap:10px; flex-shrink:0; }
.logo__img{ height: 112px; width:auto; }
.footer__logo{
  align-self: flex-start;
  height: auto;
  width: auto;
  max-width: 100%;
  max-height: 72px;
  object-fit: contain;
}

.nav{ display:flex; gap: 32px; }
.nav a{
  font-family: var(--f-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  position: relative;
  padding: 4px 0;
}
.nav a::after{
  content:"";
  position:absolute; left:0; bottom:0;
  width:0; height:2px;
  background: var(--rojo);
  transition: width .2s ease;
}
.nav a:hover::after{ width:100%; }

.nav__toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  padding: 8px;
}
.nav__toggle span{
  width:24px; height:2px; background: var(--negro); display:block;
}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative;
  padding: 168px 0 96px;
  min-height: 640px;
  background: #FFFFFF url('../images/hero-obra.png') no-repeat right bottom / auto 100%;
  overflow:hidden;
}
.hero .container{
  max-width: none;
  margin: 0;
  padding-left: 24px;
  padding-right: 24px;
}
.hero__inner{ position:relative; max-width: 620px; }

.hero__eyebrow{
  display:flex;
  align-items:center;
  gap:12px;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gris-concreto);
  margin-bottom: 28px;
}
.dim-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:26px; height:26px;
  border: 1px solid var(--negro);
  font-size: 0.7rem;
}

.hero__title{
  position:relative;
  font-family: var(--f-display);
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 1.05;
  text-transform: uppercase;
  padding: 36px 0;
  margin-bottom: 24px;
}
.text-rojo{ color: #1C4498; }

.hero__subtitle{
  font-size: 1.15rem;
  color: #333;
  max-width: 560px;
  margin-bottom: 40px;
}
.hero__cta{
  display:flex; flex-wrap:wrap; gap:16px;
  margin-bottom: 64px;
}

.hero__subtitle--mobile{ display: none; }
.hero__stats{
  display:flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 28px;
}
.hero__stat dt{
  font-family: var(--f-mono);
  font-size: 2rem;
  color: var(--negro);
}
.hero__stat dd{
  font-size: 0.85rem;
  color: var(--gris-concreto);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* =========================================================
   SECTION HEAD (compartido)
   ========================================================= */
.section-head{
  max-width: 620px;
  margin-bottom: 56px;
}
.section-head__num{
  display:block;
  font-family: var(--f-mono);
  font-size: 0.85rem;
  color: var(--rojo);
  margin-bottom: 12px;
}
.section-head--light .section-head__num{ color: var(--rojo); }
.section-head h2{
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  text-transform: uppercase;
  line-height: 1.15;
  margin-bottom: 12px;
}
.section-head p{ color: var(--gris-concreto); font-size: 1.05rem; }
.section-head--light h2,
.section-head--light p{ color: var(--blanco); }
.section-head--light p{ color: #B8B4AC; }

/* =========================================================
   SERVICIOS
   ========================================================= */
.services{
  padding: 96px 0;
  position: relative;
  background: url('../images/servicios-bg.png') no-repeat left center / cover;
  color: var(--negro);
}
.services::before{
  content:"";
  position:absolute; top:0; left:0; right:0; height:120px;
  background: linear-gradient(to bottom, var(--blanco) 0%, rgba(250,250,250,0) 100%);
  pointer-events:none;
}
.services .section-head h2,
.services .section-head p{ color: var(--negro); }
.services .section-head__num{ color: var(--rojo); border-color: var(--rojo); }
.services .section-head{
  max-width: none;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.services .section-head h2{ white-space: nowrap; }

.services .container{
  max-width: none;
  margin: 0;
  padding-left: 40px;
  padding-right: 40px;
}
.services__grid{
  display:grid;
  grid-template-columns: repeat(6, minmax(0,1fr));
  gap: 16px;
}

.service-card{
  perspective: 1400px;
  cursor: pointer;
  outline: none;
  width: 100%;
  height: 560px;
  box-sizing: border-box;
}
.service-card__inner{
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform .6s cubic-bezier(.4,.2,.2,1);
  transform-style: preserve-3d;
}
.service-card.is-flipped .service-card__inner{ transform: rotateY(180deg); }
.service-card__face{
  position:absolute; inset:0;
  backface-visibility: hidden;
  border-radius: 2px;
  padding: 34px 26px;
  box-sizing: border-box;
  display:flex;
  flex-direction:column;
  overflow:hidden;
}
.service-card__front{
  background: rgba(10,10,10,0.72);
  border: 1px solid var(--rojo);
}
.service-card__front::before,
.service-card__front::after{
  content:""; position:absolute; width:14px; height:14px;
}
.service-card__front::before{ top:-1px; left:-1px; border-top:2px solid var(--rojo); border-left:2px solid var(--rojo); }
.service-card__front::after{ bottom:-1px; right:-1px; border-bottom:2px solid var(--rojo); border-right:2px solid var(--rojo); }
.service-card__back{
  transform: rotateY(180deg);
  background: #0d0d0d;
  border: 1px solid var(--rojo);
}
.service-card__head{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 6px;
}
.service-card__code{
  color: var(--blanco);
  background: var(--rojo);
  padding: 5px 10px;
  font-weight: 700;
}
.service-card__dim{ color: #ccc; font-weight: 700; }
.service-card__front h3{
  font-family: var(--f-display);
  font-size: 1.08rem;
  text-transform: uppercase;
  margin-bottom: 14px;
  color: var(--blanco);
  line-height: 1.2;
  overflow-wrap: break-word;
}
.service-card__front p{ color: #e5e5e0; font-size: 1rem; line-height:1.55; flex-grow:1; }
.service-card__hint{
  align-self: flex-end;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--rojo);
  margin-top: 16px;
}
.service-card__back h4{
  font-family: var(--f-display);
  font-size: 1.1rem;
  text-transform: uppercase;
  color: var(--blanco);
  margin-bottom: 16px;
  line-height: 1.25;
  overflow-wrap: break-word;
}
.service-card__back ul{
  list-style: none;
  flex-grow:1;
  font-family: var(--f-mono);
  font-size: 0.9rem;
  color: #eee;
}
.service-card__back li{ padding: 9px 0 9px 17px; position:relative; border-top: 1px dashed rgba(255,255,255,0.15); line-height:1.4; }
.service-card__back li:first-child{ border-top:none; }
.service-card__back li::before{ content:"▸"; color: var(--rojo); position:absolute; left:0; }

/* =========================================================
   PROCESO
   ========================================================= */
.process{ padding: 96px 0; background: var(--negro); color: var(--blanco); }
.process__list{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
}
.process__step{
  border-top: 2px solid var(--rojo);
  padding-top: 20px;
}
.process__step-num{
  display:block;
  font-family: var(--f-mono);
  font-size: 2.2rem;
  color: var(--rojo);
  margin-bottom: 8px;
}
.process__step h3{
  font-family: var(--f-display);
  font-size: 1.05rem;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.process__step p{ color: #B8B4AC; font-size: 0.9rem; }

/* =========================================================
   PROYECTOS Y CARROUSEL (REDISEÑO DE 2 TARJETAS)
   ========================================================= */
.projects{ padding: 96px 0; background: var(--blanco); }
.projects__grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
  max-width: 1180px;
  margin: 0 auto;
}

.project-card {
  display: flex;
  flex-direction: column;
}

/* El contenedor del Carrusel */
.project-carousel {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--gris-linea);
  border-radius: var(--radius);
  background: var(--negro);
}

.carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
}

/* Diapositiva individual */
.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease-in-out, visibility 0.4s ease-in-out;
  z-index: 1;
}

/* Diapositiva activa visible */
.carousel-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Etiquetas flotantes en las fotos */
.slide-badge {
  position: absolute;
  bottom: 12px;
  left: 12px;
  padding: 4px 10px;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  background: var(--negro);
  color: var(--blanco);
  z-index: 5;
  border-left: 2px solid var(--rojo);
}

.slide-badge--before {
  border-left-color: var(--azul);
}

.slide-badge--after {
  border-left-color: var(--rojo);
}

/* Puntitos Indicadores de posición */
.carousel-dots {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  gap: 6px;
  z-index: 10;
}

.carousel-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(250, 250, 250, 0.4);
  transition: background 0.2s ease, transform 0.2s ease;
  cursor: pointer;
}

.carousel-dots .dot.active {
  background: var(--rojo);
  transform: scale(1.2);
}

.project-card figcaption{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  padding-top: 16px;
  font-family: var(--f-mono);
  font-size: 0.85rem;
}
.project-card figcaption h3 {
  font-family: var(--f-display);
  font-size: 1.1rem;
  text-transform: uppercase;
}
.project-card figcaption small{ color: var(--gris-concreto); }

/* =========================================================
   TESTIMONIOS
   ========================================================= */
.testimonials{ padding: 96px 0; background: var(--negro-suave); color: var(--blanco); }
.testimonials__grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.testimonial{
  border-left: 2px solid var(--rojo);
  padding-left: 20px;
}
.testimonial p{
  font-size: 1.05rem;
  margin-bottom: 14px;
  line-height: 1.5;
}
.testimonial cite{
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--gris-concreto);
  font-style: normal;
}

/* =========================================================
   CONTACTO
   ========================================================= */
.contact{ padding: 96px 0; background: var(--blanco); }
.contact__inner{
  display:grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
}
.contact__info h2{
  font-family: var(--f-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  text-transform: uppercase;
  margin: 12px 0 16px;
}
.contact__info p{ color: var(--gris-concreto); margin-bottom: 32px; max-width: 420px; }
.contact__list li{
  padding: 16px 0;
  border-top: 1px dashed var(--gris-linea);
  display:flex;
  flex-direction:column;
  gap: 4px;
}
.contact__list li:last-child{ border-bottom: 1px dashed var(--gris-linea); }
.contact__list strong{
  font-family: var(--f-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--gris-concreto);
}
.contact__list a{ font-size: 1.05rem; }
.contact__list a:hover{ color: var(--azul); }

.contact__form{
  background: var(--negro);
  color: var(--blanco);
  padding: 40px;
  border-radius: var(--radius);
}
.form-row{ margin-bottom: 20px; }
.form-row label{
  display:block;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--gris-concreto);
  margin-bottom: 8px;
}
.form-row input,
.form-row select,
.form-row textarea{
  width:100%;
  background: var(--negro-suave);
  border: 1px solid var(--gris-linea);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--blanco);
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  border-color: var(--rojo);
  outline: none;
}
.form-note{
  margin-top: 14px;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--rojo);
  min-height: 1.2em;
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer{ background: var(--negro); color: var(--blanco); padding: 56px 0 28px; }
.footer__inner{
  display:grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--gris-linea);
  margin-bottom: 24px;
}
.footer__brand{ display:flex; flex-direction:column; gap:10px; }
.footer__brand p{ color: var(--gris-concreto); font-size: 0.9rem; max-width: 260px; }
.footer__nav{ display:flex; flex-direction:column; gap: 10px; }
.footer__nav a{ font-family: var(--f-mono); font-size: 0.85rem; color: #B8B4AC; }
.footer__nav a:hover{ color: var(--rojo); }
.footer__copy{
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--gris-concreto);
  text-align: center;
}

/* =========================================================
   SCROLL REVEAL
   ========================================================= */
.reveal{ opacity:0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible{ opacity:1; transform:none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 860px){
  .nav{ display:none; }
  .btn--nav{ display:none; }
  .nav__toggle{ display:flex; }

  .hero{ background-image:none; }

  .nav.is-open{
    display:flex;
    flex-direction:column;
    position:absolute;
    top:76px; left:0; right:0;
    background: var(--blanco);
    border-bottom: 1px solid var(--gris-linea);
    padding: 20px 24px 28px;
    gap: 18px;
  }

  .contact__inner{ grid-template-columns: 1fr; }
  .footer__inner{ grid-template-columns: 1fr; }
  .services__grid{ grid-template-columns: repeat(3, minmax(0,1fr)); }
}

@media (max-width: 520px){
  .hero{ padding-top: 140px; }
  .hero__cta{ flex-direction:column; }
  .hero__cta .btn{ width:100%; justify-content:center; }
  .services__grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .service-card, .service-card__inner{ height: 480px; width: 100%; }
  .services .section-head h2{ white-space: normal; font-size: 1.6rem; }
}

/* =========================================================
   BOTÓN FLOTANTE DE WHATSAPP
   ========================================================= */
.wa-float{
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
}
.wa-float__btn{
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  transition: transform .15s ease;
}
.wa-float__btn:hover{ transform: scale(1.06); }

.wa-float__menu{
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.wa-float.is-open .wa-float__menu{
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.wa-float__option{
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--negro);
  color: var(--blanco);
  padding: 10px 16px;
  border-radius: 40px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
  white-space: nowrap;
  transition: background .2s ease;
}
.wa-float__option:hover{ background: var(--azul); }
.wa-float__option strong{
  display:block;
  font-family: var(--f-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
}
.wa-float__option small{
  display:block;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: #B8B4AC;
}
.wa-float__flag{ font-size: 1.3rem; }

@media (max-width: 520px){
  .wa-float{ right: 16px; bottom: 16px; }
  .wa-float__btn{ width: 54px; height: 54px; }
}

/* =========================================================
   MODO MOBILE (≤640px)
   - Ficha técnica de servicios → carrusel horizontal (swipe)
   - Obras realizadas → carrusel horizontal (swipe)
   - Ajustes generales de espaciado y tipografía
   ========================================================= */
@media (max-width: 640px){

  /* ---------- HERO ---------- */
  .hero{
    padding: 116px 0 260px;
    min-height: auto;
    background: #FFFFFF url('../images/hero-obra-mobile.png') no-repeat center bottom / contain;
  }
  .hero .container{ padding-left: 20px; padding-right: 20px; }
  .hero__title{ padding: 24px 0; margin-bottom: 18px; }
  .hero__subtitle{ display: none; }
  .hero__subtitle--mobile{
    display: block;
    font-size: 1.02rem;
    color: #333;
    max-width: 560px;
    margin-bottom: 28px;
  }
  .hero__cta{ margin-bottom: 0; }
  .hero__stats{ display: none; }

  /* ---------- ENCABEZADOS DE SECCIÓN ---------- */
  .section-head{ margin-bottom: 36px; }
  .section-head p{ font-size: 0.95rem; }

  /* ---------- FICHA TÉCNICA DE SERVICIOS → CARRUSEL ---------- */
  .services{ padding: 64px 0; }
  .services .container{ padding-left: 0; padding-right: 0; }
  .services .section-head{ padding: 0 20px; }
  .services .section-head h2{ white-space: normal; font-size: 1.5rem; }

  .services__grid{
    display: flex;
    grid-template-columns: none;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 16px;
    padding: 4px 20px 12px;
  }
  .services__grid::-webkit-scrollbar{ display: none; }

  .service-card,
  .service-card__inner{ height: 440px; }
  .service-card{
    flex: 0 0 80%;
    scroll-snap-align: center;
  }

  /* ---------- OBRAS REALIZADAS → CARRUSEL ---------- */
  .projects{ padding: 64px 0; }
  .projects .container{ padding-left: 0; padding-right: 0; }
  .projects .section-head{ padding: 0 20px; }

  .projects__grid{
    display: flex;
    grid-template-columns: none;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 20px;
    padding: 4px 20px 12px;
    max-width: none;
  }
  .projects__grid::-webkit-scrollbar{ display: none; }

  .project-card{
    flex: 0 0 85%;
    scroll-snap-align: center;
  }

  /* ---------- TESTIMONIOS ---------- */
  .testimonials{ padding: 64px 0; }
  .testimonials__grid{ gap: 24px; }

  /* ---------- CONTACTO ---------- */
  .contact{ padding: 64px 0; }
  .contact__inner{ gap: 40px; }
  .contact__form{ padding: 28px 20px; }

  /* ---------- FOOTER ---------- */
  .footer{ padding: 44px 0 24px; }
  .footer__inner{ gap: 28px; }
}