/* ============================================================
   SAVYCSA — Empresa Constructora
   Hoja de estilos principal
   ============================================================ */

:root{
  --color-bg: #ffffff;
  --color-bg-dark: #14181c;
  --color-bg-dark-2: #1b2126;
  --color-text: #1c2226;
  --color-text-soft: #5b6570;
  --color-text-on-dark: #eef1f3;
  --color-text-on-dark-soft: #a7b0b8;
  --color-accent: #f5a623;
  --color-accent-dark: #d98c12;
  --color-line: #e5e8ea;
  --font-head: 'Barlow Condensed', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius: 10px;
  --max-width: 1180px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4{
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 .5em;
  letter-spacing: .3px;
}

p{ margin: 0 0 1em; }
a{ color: inherit; text-decoration: none; }

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

.skip-link{
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: #14181c;
  padding: 12px 20px;
  z-index: 999;
  font-weight: 600;
}
.skip-link:focus{ left: 16px; top: 16px; }

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover{ transform: translateY(-2px); }
.btn-primary{
  background: var(--color-accent);
  color: #14181c;
}
.btn-primary:hover{ background: var(--color-accent-dark); }
.btn-outline{
  border-color: rgba(255,255,255,.5);
  color: #fff;
}
.btn-outline:hover{ border-color: #fff; background: rgba(255,255,255,.08); }

/* ---------- Header ---------- */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  background: rgba(20,24,28,0);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled{
  background: rgba(20,24,28,.96);
  box-shadow: 0 4px 20px rgba(0,0,0,.15);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.logo{
  display: inline-flex;
  align-items: center;
}
.logo-img{
  height: 40px;
  width: auto;
  display: block;
}

.main-nav{
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav a{
  color: #fff;
  padding: 10px 16px;
  font-size: .95rem;
  font-weight: 500;
  opacity: .9;
  border-radius: 999px;
  transition: opacity .2s ease, background .2s ease;
}
.main-nav a:hover{ opacity: 1; background: rgba(255,255,255,.08); }
.nav-cta{
  background: var(--color-accent);
  color: #14181c !important;
  opacity: 1 !important;
  margin-left: 8px;
}
.nav-cta:hover{ background: var(--color-accent-dark); }

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
}
.nav-toggle span{
  display: block;
  height: 2px;
  width: 100%;
  background: #fff;
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity: 0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.hero-slider{
  position: absolute;
  inset: 0;
  overflow: hidden;
  background-color: #14181c;
}
.hero-slide{
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-color: #14181c;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1.6s ease, transform 6s ease;
}
.hero-slide.is-active{
  opacity: 1;
  transform: scale(1);
  z-index: 1;
}
.hero-overlay{
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(100deg, rgba(20,24,28,.78) 0%, rgba(20,24,28,.5) 45%, rgba(20,24,28,.28) 100%),
    repeating-linear-gradient(120deg, rgba(255,255,255,.02) 0px, rgba(255,255,255,.02) 2px, transparent 2px, transparent 140px);
}
.hero-overlay::after{
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 12%;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--color-accent) 0 42px, transparent 42px 84px);
  opacity: .35;
  transform: skewY(-3deg);
}
.hero-inner{
  position: relative;
  z-index: 2;
  max-width: 760px;
  padding-top: 90px;
}
.eyebrow{
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 14px;
}
.hero h1{
  font-size: clamp(2.4rem, 5.2vw, 4rem);
  margin-bottom: .4em;
}
.hero-lead{
  font-size: 1.15rem;
  color: var(--color-text-on-dark-soft);
  max-width: 560px;
}
.hero-actions{
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.scroll-cue{
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255,255,255,.5);
  border-radius: 999px;
  z-index: 2;
}
.scroll-cue span{
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 999px;
  animation: scrollcue 1.6s ease infinite;
}
@keyframes scrollcue{
  0%{ opacity: 1; transform: translate(-50%,0); }
  70%{ opacity: 0; transform: translate(-50%,14px); }
  100%{ opacity: 0; }
}

/* ---------- Sections ---------- */
.section{
  padding: 110px 0;
}
.section-dark{
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}
.section-dark h2, .section-dark h3{ color: #fff; }
.section-dark .section-lead{ color: var(--color-text-on-dark-soft); }

.section-head{
  max-width: 640px;
  margin: 0 0 56px;
}
.section-head h2{
  font-size: clamp(2rem, 3.4vw, 2.7rem);
}
.section-lead{
  color: var(--color-text-soft);
  font-size: 1.05rem;
  margin-top: 8px;
}

/* ---------- Empresa ---------- */
.empresa-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.empresa-card{
  position: relative;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 40px 32px;
}
.card-index{
  display: inline-block;
  font-family: var(--font-head);
  font-size: .95rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  background: rgba(245,166,35,.12);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.empresa-card h3{ font-size: 1.5rem; }
.empresa-card p{ color: var(--color-text-soft); margin: 0; }

/* ---------- Servicios ---------- */
.services-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}
.service-card{
  background: var(--color-bg-dark-2);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 34px 28px;
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease;
}
.service-card:hover{
  transform: translateY(-6px);
  border-color: rgba(245,166,35,.4);
}
.service-media{
  margin: -34px -28px 20px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  background: #0e1114;
}
.service-media img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.service-card:hover .service-media img{ transform: scale(1.06); }

.service-icon{
  width: 52px;
  height: 52px;
  color: var(--color-accent);
  margin-bottom: 20px;
}
.service-icon svg{ width: 100%; height: 100%; }
.service-card h3{
  font-size: 1.3rem;
  margin-bottom: 14px;
}
.service-card ul{
  margin: 0;
  padding: 0;
  list-style: none;
}
.service-card li{
  color: var(--color-text-on-dark-soft);
  font-size: .95rem;
  padding: 7px 0 7px 20px;
  position: relative;
  border-top: 1px solid rgba(255,255,255,.06);
}
.service-card li:first-child{ border-top: none; }
.service-card li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 8px;
  height: 2px;
  background: var(--color-accent);
}

/* ---------- Equipos (carrusel) ---------- */
.carousel{
  position: relative;
  padding: 8px 0 4px;
}
.carousel-track{
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  padding: 8px 64px 18px;
  margin: 0;
  list-style: none;
}
.carousel-track::-webkit-scrollbar{ height: 8px; }
.carousel-track::-webkit-scrollbar-track{ background: transparent; }
.carousel-track::-webkit-scrollbar-thumb{ background: var(--color-line); border-radius: 999px; }

.carousel-item{
  flex: 0 0 auto;
  width: 260px;
  scroll-snap-align: start;
  margin: 0;
}
.carousel-item img{
  width: 100%;
  height: 190px;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 8px 20px rgba(20,24,28,.14);
}
.carousel-item figcaption{
  margin-top: 14px;
  text-align: center;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: .3px;
  color: var(--color-text);
}

.carousel-arrow{
  position: absolute;
  top: 42%;
  transform: translateY(-50%);
  z-index: 5;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--color-line);
  box-shadow: 0 6px 16px rgba(20,24,28,.15);
  font-size: 1.7rem;
  line-height: 1;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.carousel-arrow:hover{
  background: var(--color-accent);
  color: #14181c;
  border-color: var(--color-accent);
}
.carousel-prev{ left: 16px; }
.carousel-next{ right: 16px; }

@media (max-width: 640px){
  .carousel-arrow{ width: 38px; height: 38px; font-size: 1.4rem; }
  .carousel-track{ padding: 8px 46px 18px; gap: 14px; }
  .carousel-item{ width: 210px; }
  .carousel-item img{ height: 155px; }
}

/* ---------- Antecedentes ---------- */
.stats-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.stat{
  text-align: center;
  padding: 30px 16px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}
.stat-number{
  display: block;
  font-family: var(--font-head);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  line-height: 1;
  margin-bottom: 10px;
}
.stat-label{
  font-size: .88rem;
  color: var(--color-text-soft);
}

.obras-head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}
.obras-head h3{
  font-size: 1.3rem;
  margin: 0;
}
.obras-toggle-all{
  background: transparent;
  border: 1.5px solid var(--color-line);
  color: var(--color-text-soft);
  font-weight: 600;
  font-size: .85rem;
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease;
}
.obras-toggle-all:hover{
  border-color: var(--color-accent-dark);
  color: var(--color-accent-dark);
}

.accordion{
  border-top: 1px solid var(--color-line);
}
.accordion-item{
  border-bottom: 1px solid var(--color-line);
}
.accordion-header{
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 20px 4px;
  text-align: left;
  font-family: var(--font-body);
}
.accordion-client{
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-text);
  flex: 1;
}
.accordion-count{
  font-size: .82rem;
  color: var(--color-text-soft);
  background: #f2f3f4;
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.accordion-caret{
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(245,166,35,.14);
  color: var(--color-accent-dark);
  font-weight: 700;
  transition: transform .25s ease;
}
.accordion-item.open .accordion-caret{ transform: rotate(45deg); }

.accordion-body{
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.accordion-item.open .accordion-body{
  max-height: 3000px;
}
.obras-list{
  list-style: none;
  margin: 0;
  padding: 0 4px 22px;
}
.obras-list li{
  display: flex;
  gap: 16px;
  padding: 10px 0;
  border-top: 1px dashed var(--color-line);
  font-size: .92rem;
  color: var(--color-text-soft);
}
.obras-list li:first-child{ border-top: none; }
.obra-anio{
  flex-shrink: 0;
  width: 92px;
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: .3px;
}

/* ---------- Contacto ---------- */
.contact-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.contact-card{
  background: var(--color-bg-dark-2);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 34px 28px;
}
.contact-card h3{ font-size: 1.25rem; }
.contact-card p{ color: var(--color-text-on-dark-soft); font-size: .95rem; }
.contact-card a[href^="mailto"], .contact-card a[href^="tel"]{
  color: var(--color-accent);
  font-weight: 600;
}
.contact-card-cta{
  background: linear-gradient(135deg, rgba(245,166,35,.16), rgba(245,166,35,.04));
  border-color: rgba(245,166,35,.3);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.contact-card-cta .btn{ margin-top: 8px; align-self: flex-start; }
.contact-card-cta a.btn-primary{ color: #fff !important; }

/* ---------- Footer ---------- */
.site-footer{
  background: #101317;
  color: var(--color-text-on-dark-soft);
  padding: 40px 0;
}
.footer-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-logo .logo-img{ height: 32px; }
.footer-inner p{ margin: 0; font-size: .85rem; }

/* ---------- WhatsApp flotante ---------- */
.whatsapp-float{
  position: fixed;
  left: 24px;
  bottom: 24px;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(0,0,0,.25);
  z-index: 400;
  transition: transform .2s ease, box-shadow .2s ease;
}
.whatsapp-float:hover{
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(0,0,0,.3);
}
.whatsapp-float svg{
  width: 28px;
  height: 28px;
  fill: #fff;
}

/* ---------- Back to top ---------- */
.back-to-top{
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #14181c;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease;
  z-index: 400;
}
.back-to-top.visible{
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* ---------- Reveal animation ---------- */
.reveal{
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.in-view{
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .empresa-grid{ grid-template-columns: 1fr; }
  .stats-grid{ grid-template-columns: repeat(2, 1fr); }
  .clients-list{ grid-template-columns: repeat(2, 1fr); }
  .contact-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 760px){
  .main-nav{
    position: fixed;
    top: 76px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(20,24,28,.98);
    padding: 12px 24px 24px;
    gap: 4px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease;
  }
  .main-nav.open{
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .main-nav a{ padding: 14px 8px; }
  .nav-cta{ margin-left: 0; text-align: center; }
  .nav-toggle{ display: flex; }
  .section{ padding: 76px 0; }
  .stats-grid{ grid-template-columns: 1fr 1fr; }
  .service-media{ margin: -28px -22px 16px; }
  .obras-list li{ flex-direction: column; gap: 2px; }
  .obra-anio{ width: auto; }
}

@media (max-width: 520px){
  .clients-list{ grid-template-columns: 1fr; }
  .stats-grid{ grid-template-columns: 1fr; }
  .hero-actions{ flex-direction: column; align-items: stretch; }
}