/* ========== Base ==========
   Tipografía y reset mínimo accesible */
:root{
  --brand:#0aa3c0; /* aqua */
  --brand-dark:#04859a;
  --ink:#0e2b3a;
  --muted:#4b6a78;
  --bg:#ffffff;
  --surface:#f2fafc;
  --card:#ffffff;
  --border:#e6eef1;
  --focus:#1c7ed6;
  --shadow:0 8px 24px rgba(14,43,58,.08);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Montserrat,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
img{max-width:100%;height:auto;display:block}
.container{width:min(1100px,92%);margin-inline:auto}
.narrow{width:min(800px,92%)}
.center{text-align:center}
.mt-16{margin-top:1rem}
.mt-24{margin-top:1.5rem}
.mt-32{margin-top:2rem}
.unstyled{list-style:none;padding:0;margin:0}
.skip-link{position:absolute;left:-999px;top:auto}
.skip-link:focus{left:16px;top:16px;background:#fff;padding:.5rem 1rem;border:2px solid var(--focus);z-index:1000}

/* ========== Header & Nav ========== */
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 0}
.brand{display:flex;align-items:center;gap:.5rem;color:var(--ink);font-weight:700;letter-spacing:.5px}
.brand-logo{height:36px;width:auto;object-fit:contain}
.brand-text{display:inline}
.site-nav{display:flex;gap:.75rem}
.site-nav a{padding:.5rem .75rem;border-radius:.5rem;color:var(--muted)}
.site-nav a.active,.site-nav a:hover{color:var(--ink);background:var(--surface)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0}

/* ========== Hero ========== */
.hero{position:relative;isolation:isolate}
.hero-bg{height:60vh;min-height:360px;width:100%;object-fit:cover;filter:saturate(1.05)}
.hero-content{position:absolute;inset:0;display:grid;place-content:end center;text-align:center;color:#fff;padding:0 1rem clamp(56px,12vh,140px)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.35),rgba(0,0,0,.35));z-index:-1}
.hero-cta{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap}

/* ========== Buttons ========== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.6rem 1rem;border-radius:.6rem;border:1px solid transparent;font-weight:600;cursor:pointer;box-shadow:var(--shadow);background:#fff;color:var(--ink)}
.btn.primary{background:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-dark)}
.btn.ghost{background:#fff;border-color:var(--border)}
.btn.small{padding:.45rem .75rem;border-radius:.5rem;box-shadow:none}
.btn.large{padding:.8rem 1.2rem;font-size:1.05rem}

/* ========== Sections ========== */
.benefits{padding:2.25rem 0}
.benefits h2,.featured h2{margin-top:0;text-align:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}
.card{background:var(--card);border:1px solid var(--border);border-radius:.8rem;padding:1rem;box-shadow:var(--shadow)}
.featured{padding:2rem 0}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1rem}
.product{background:var(--card);border:1px solid var(--border);border-radius:.8rem;overflow:hidden;display:flex;flex-direction:column}
.product img{aspect-ratio:4/3;object-fit:contain;background:#fff}
.product h3{margin:.75rem 1rem .25rem}
.product p{margin:0 1rem 1rem;color:var(--muted)}
.product .btn{margin:0 1rem 1rem;align-self:flex-start}

.about-split{display:grid;grid-template-columns:1.2fr .8fr;gap:1.5rem;align-items:center;padding:2rem 0}
.about-split.one-col{grid-template-columns:1fr}
.about-split .image img{border-radius:.8rem}
.inline-links a{font-weight:600}

/* ========== Footer & FAB ========== */
.site-footer{margin-top:2rem;border-top:1px solid var(--border);background:#403F6F; color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:1rem;padding:1.25rem 0;background:#403F6F; color:#fff}
.legal{padding:.9rem 0;color:var(--muted);text-align:center}
.whatsapp-fab{position:fixed;right:16px;bottom:16px;width:52px;height:52px;border-radius:50%;background:#25D366;display:grid;place-items:center;box-shadow:0 10px 24px rgba(0,0,0,.15);z-index:60}
.whatsapp-fab:hover{transform:translateY(-1px)}
.whatsapp-fab img{width:28px;height:28px;display:block}

/* ========== Separadores ========== */
.section-sep{height:90px;background:url('assets/pool-pattern.jpg') center/cover no-repeat}

/* ========== Contact ========== */
.contact-cta{display:flex;justify-content:center;margin-top:1rem}
.social-list{display:grid;gap:.5rem;margin:0;padding:0;list-style:none}
.social{display:inline-flex;align-items:center;gap:.5rem}
.social.instagram{color:#E1306C}
.social.facebook{color:#1773EA}

/* ========== Page Titles ========== */
.page-title{margin:1.25rem 0 .25rem}
.page-intro{color:var(--muted);margin:0 0 1rem}

/* ========== Responsive ========== */
@media (max-width: 900px){
  .grid-3{grid-template-columns:1fr}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .about-split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .brand-text{display:inline}
}
@media (max-width: 680px){
  .site-nav{position:fixed;inset:auto 0 0 0;background:#fff;border-top:1px solid var(--border);padding:1rem;transform:translateY(100%);transition:transform .25s ease;display:grid;gap:.25rem}
  .site-nav.open{transform:translateY(0)}
  .nav-toggle{display:inline-block}
  /* Mostrar el banner completo en móviles (sin recorte) */
  .hero{display:block}
  .hero-bg{height:auto;min-height:0;object-fit:contain;width:100%}
  .hero-content{position:static;padding:12px 1rem 16px;color:inherit}
  .hero::after{display:none}
}

/* Focus visible for accessibility */
:where(a,button):focus-visible{outline:3px solid var(--focus);outline-offset:2px}