/* ZALTARI — Diseño & Construcción de Piscinas
   style.css */

@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:wght@400;600;700;800;900&family=Lato:wght@300;400;700&display=swap');

/* Variables */
:root {
  --red:        #BF303C;
  --red-alt:    #BF3030;
  --pink:       #D9A7A7;
  --light:      #F2F2F2;
  --gray:       #595959;
  --white:      #ffffff;
  --black:      #1C1C1C;
  --transition: .35s cubic-bezier(.4,0,.2,1);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Lato', sans-serif;
  color: var(--black);
  background: var(--white);
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Typography helpers */
.section-label {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 12px;
}
h1, h2, h3 {
  font-family: 'Nunito Sans', sans-serif;
  font-weight: 800;
  line-height: 1.15;
}

/* HEADER */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 76px;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(191,48,60,.12);
  transition: box-shadow var(--transition);
}
#site-header.scrolled {
  box-shadow: 0 4px 24px rgba(0,0,0,.08);
}

/* Logo */
.header-logo-img {
  height: 48px;
  width: auto;
}

/* Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  font-size: .88rem;
  font-weight: 500;
  color: var(--gray);
  padding: 8px 16px;
  border-radius: 4px;
  letter-spacing: .02em;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--red);
  background: rgba(191,48,60,.06);
}
.main-nav a.active {
  font-weight: 600;
}
.nav-cta {
  margin-left: 12px;
  background: var(--red) !important;
  color: #fff !important;
  padding: 10px 22px !important;
  border-radius: 4px !important;
  font-weight: 600 !important;
  transition: background var(--transition), transform var(--transition) !important;
}
.nav-cta:hover {
  background: var(--red-alt) !important;
  transform: translateY(-1px);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: 76px; left: 0; right: 0;
  background: #fff;
  border-bottom: 2px solid var(--red);
  padding: 16px 24px 24px;
  z-index: 999;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 8px 32px rgba(0,0,0,.1);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--gray);
  padding: 12px 16px;
  border-radius: 4px;
  transition: background var(--transition), color var(--transition);
}
.mobile-nav a:hover,
.mobile-nav a.active { background: var(--light); color: var(--red); }

/* CARRUSEL HERO */
.hero-carousel {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 380px;
  overflow: hidden;
  margin-top: 76px;
}
.carousel-track {
  display: flex;
  height: 100%;
  transition: transform .8s cubic-bezier(.77,0,.18,1);
}
.carousel-slide {
  min-width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}
.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  transition: transform 6s ease;
}
.carousel-slide.active img { transform: scale(1); }

/* Overlay */
.carousel-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(28,28,28,.68) 0%,
    rgba(0,0,0,.18) 100%
  );
}
.carousel-caption {
  position: absolute;
  bottom: 100px;
  left: 80px;
  max-width: 560px;
  color: #fff;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease .3s, transform .7s ease .3s;
}
.carousel-slide.active .carousel-caption {
  opacity: 1;
  transform: translateY(0);
}
.carousel-caption .eyebrow {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--pink);
  margin-bottom: 14px;
}
.carousel-caption h1 {
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.08;
  margin-bottom: 18px;
  text-shadow: 0 2px 16px rgba(0,0,0,.25);
}
.carousel-caption p {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.65;
  color: rgba(255,255,255,.88);
}
.footer-logo-img {
  height: 52px;
  width: auto;
  margin-bottom: 18px;
}

/* Controls */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px; height: 52px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 50%;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(6px);
  transition: background var(--transition), transform var(--transition);
  z-index: 10;
}
.carousel-btn:hover {
  background: var(--red);
  border-color: var(--red);
  transform: translateY(-50%) scale(1.08);
}
.carousel-btn.prev { left: 28px; }
.carousel-btn.next { right: 28px; }

/* Dots */
.carousel-dots {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}
.carousel-dots button {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.4);
  border: none;
  cursor: pointer;
  transition: background var(--transition), width var(--transition);
  padding: 0;
}
.carousel-dots button.active {
  background: #fff;
  width: 28px;
  border-radius: 4px;
}

/* SECCION INTRO */
.section-intro {
  padding: 96px 0;
  background: var(--white);
}
.intro-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.intro-text .section-label { margin-bottom: 14px; }
.intro-text h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 800;
  color: var(--black);
  margin-bottom: 28px;
  line-height: 1.18;
}
.intro-text h2 em {
  font-style: normal;
  color: var(--red);
}
.intro-text p {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--gray);
  margin-bottom: 16px;
}
.intro-text p:last-of-type { margin-bottom: 36px; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--red);
  color: #fff;
  font-family: 'Lato', sans-serif;
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .03em;
  padding: 14px 30px;
  border-radius: 4px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  background: var(--red-alt);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(191,48,60,.3);
}
.btn-primary svg { transition: transform var(--transition); }
.btn-primary:hover svg { transform: translateX(4px); }

/* Intro stats */
.intro-stats {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}
.intro-stats::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--red), var(--pink));
  border-radius: 2px;
}
.stat-card {
  padding: 32px 36px;
  border-bottom: 1px solid var(--light);
  transition: background var(--transition);
}
.stat-card:last-child { border-bottom: none; }
.stat-card:hover { background: var(--light); }
.stat-card .stat-number {
  font-family: 'Nunito Sans', sans-serif;
  font-size: 3rem;
  font-weight: 900;
  color: var(--red);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-card .stat-label {
  font-size: .88rem;
  font-weight: 500;
  color: var(--gray);
  letter-spacing: .03em;
}
.stat-card .stat-desc {
  font-size: .8rem;
  color: var(--pink);
  margin-top: 4px;
}

/* SECCION SERVICIOS */
.section-services {
  padding: 80px 0;
  background: var(--light);
}
.services-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 48px;
}
.services-header {
  text-align: center;
  margin-bottom: 56px;
}
.services-header h2 {
  font-size: clamp(1.8rem, 2.5vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 14px;
}
.services-header p {
  font-size: 1rem;
  color: var(--gray);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.65;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: #fff;
  border-radius: 8px;
  padding: 36px 30px;
  border-bottom: 3px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--pink));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover {
  box-shadow: 0 12px 40px rgba(0,0,0,.1);
  transform: translateY(-4px);
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 52px; height: 52px;
  background: rgba(191,48,60,.08);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: var(--red);
  font-size: 1.5rem;
  transition: background var(--transition), color var(--transition);
}
.service-card:hover .service-icon {
  background: var(--red);
  color: #fff;
}
.service-card h3 {
  font-family: 'Nunito Sans', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 10px;
}
.service-card p {
  font-size: .88rem;
  color: var(--gray);
  line-height: 1.65;
}
.service-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--red);
  letter-spacing: .03em;
  transition: gap var(--transition);
}
.service-card:hover .card-link { gap: 10px; }

/* FOOTER */
#site-footer {
  background: var(--black);
  color: rgba(255,255,255,.75);
}
.footer-top {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 48px 48px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-brand .logo-mark {
  width: 40px; height: 40px;
  background: var(--red);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.footer-brand .logo-mark span {
  font-family: 'Nunito Sans', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  color: #fff;
}
.footer-brand .brand-name {
  font-family: 'Nunito Sans', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 4px;
}
.footer-brand .brand-tagline {
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--pink);
  margin-bottom: 18px;
}
.footer-brand p {
  font-size: .88rem;
  line-height: 1.7;
  color: rgba(255,255,255,.55);
  max-width: 280px;
}
.footer-col h4 {
  font-family: 'Nunito Sans', sans-serif;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--pink);
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: .88rem;
  color: rgba(255,255,255,.6);
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col ul li a:hover {
  color: #fff;
  padding-left: 6px;
}
.footer-col .contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: .88rem;
  color: rgba(255,255,255,.6);
  line-height: 1.5;
}
.footer-col .contact-item svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--red);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 22px 48px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom p {
  font-size: .8rem;
  color: rgba(255,255,255,.35);
}
.footer-bottom a { color: var(--pink); }
.footer-legal {
  display: flex;
  gap: 24px;
}
.footer-legal a {
  font-size: .8rem;
  color: rgba(255,255,255,.35);
  transition: color var(--transition);
}
.footer-legal a:hover { color: #fff; }

/* SCROLL TOP BUTTON */
#scroll-top {
  position: fixed;
  bottom: 36px;
  right: 36px;
  width: 46px; height: 46px;
  background: var(--red);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 18px rgba(191,48,60,.35);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), background var(--transition);
  z-index: 999;
  pointer-events: none;
}
#scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
#scroll-top:hover { background: var(--red-alt); }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .intro-inner { gap: 48px; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  #site-header { padding: 0 24px; }
  .main-nav { display: none; }
  .hamburger { display: flex; }

  .hero-carousel { height: 75vh; min-height: 480px; }
  .carousel-caption {
    left: 64px;
    right: 64px;
    bottom: 90px;
    max-width: none;
  }
  .carousel-caption h1 {
    font-size: 1.9rem;
    line-height: 1.15;
  }
  .carousel-caption .eyebrow {
    font-size: .65rem;
    margin-bottom: 10px;
  }
  .carousel-caption p {
    font-size: .92rem;
  }
  .carousel-btn {
    width: 36px;
    height: 36px;
    font-size: .9rem;
  }
  .carousel-btn.prev { left: 12px; }
  .carousel-btn.next { right: 12px; }

  .section-intro { padding: 64px 0; }
  .intro-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 0 24px;
  }
  .intro-stats::before { left: 0; }
  .stat-card { padding: 24px 28px; }

  .section-services { padding: 56px 0; }
  .services-inner { padding: 0 24px; }
  .services-grid { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; padding: 48px 24px 32px; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; padding: 22px 24px; }
}

@media (max-width: 480px) {
  .carousel-caption h1 { font-size: 1.6rem; }
  .carousel-caption p { font-size: .88rem; }
  .services-inner { padding: 0 16px; }
  #scroll-top { bottom: 20px; right: 20px; }
}