/* ============================================================
   Sentza Hogar — Landing de producto
   Scroll editorial · 100% gráfico · bordes rectos · modo noche
   ============================================================ */

:root{
  --bg:#ffffff;
  --bg-alt:#f5f0eb;
  --text:#1c1c1c;
  --text-soft:#6f6f68;
  --accent:#0E424E;
  --accent-soft:#0a323b;
  --gold:#b8956a;
  --line:#e7e0d7;
  --wa:#25D366;
  --bar:rgba(255,255,255,.86);
  --shadow:0 30px 70px -40px rgba(14,66,78,.45);
}
html[data-theme="dark"]{
  --bg:#0d1418;
  --bg-alt:#131d22;
  --text:#f1ede6;
  --text-soft:#9aa3a3;
  --accent:#5fb6c6;
  --accent-soft:#7cc6d4;
  --gold:#cba87b;
  --line:#283236;
  --bar:rgba(13,20,24,.82);
  --shadow:0 30px 70px -40px rgba(0,0,0,.7);
}

*{box-sizing:border-box;margin:0;padding:0;border-radius:0 !important}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',sans-serif;
  background:var(--bg);color:var(--text);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  transition:background .5s ease,color .5s ease;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,.display{font-family:BreadleySans,'Cormorant Garamond',Georgia,serif;font-weight:normal;letter-spacing:.01em}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.eyebrow{font-size:.7rem;letter-spacing:.36em;text-transform:uppercase;color:var(--gold);font-weight:600}

/* ---------- TOP BAR ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:70;
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 32px;transition:background .4s ease,padding .4s ease,border-color .4s ease;
  border-bottom:1px solid transparent;
}
.topbar.solid{background:var(--bar);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom-color:var(--line);padding:11px 32px}
.topbar-logo{height:36px;width:auto;display:block}
.topbar-logo.logo-day{display:none}
.topbar-logo.logo-night{display:block}
/* En modo claro y con la barra sólida usamos el logo diurno; en el resto
   (hero transparente sobre foto oscura, o modo noche) usamos el nocturno. */
html[data-theme="light"] .topbar.solid .topbar-logo.logo-night{display:none}
html[data-theme="light"] .topbar.solid .topbar-logo.logo-day{display:block}
.topbar:not(.solid) .topbar-logo{filter:drop-shadow(0 2px 10px rgba(0,0,0,.4))}
.topbar-right{display:flex;align-items:center;gap:14px}
.theme-toggle{
  width:40px;height:40px;border:1px solid rgba(255,255,255,.4);background:rgba(255,255,255,.12);
  color:#fff;cursor:pointer;font-size:1.05rem;display:flex;align-items:center;justify-content:center;
  transition:background .25s,border-color .25s,color .25s;
}
.topbar.solid .theme-toggle{border-color:var(--line);background:transparent;color:var(--text)}
.theme-toggle:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.topbar-cta{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--wa);color:#fff;padding:11px 22px;
  font-size:.78rem;letter-spacing:.07em;font-weight:600;
  transition:filter .25s,transform .25s;white-space:nowrap;
}
.topbar-cta:hover{filter:brightness(1.07);transform:translateY(-1px)}
.topbar-cta svg{width:18px;height:18px}

/* ---------- HERO ---------- */
.hero{position:relative;height:100vh;min-height:620px;display:flex;align-items:flex-end;overflow:hidden}
.hero-img{position:absolute;inset:0;width:100%;height:120%;object-fit:cover;z-index:0;will-change:transform}
.hero::after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(to top,rgba(0,0,0,.72) 0%,rgba(0,0,0,.18) 45%,rgba(0,0,0,.28) 100%)}
.hero-inner{position:relative;z-index:2;color:#fff;padding:0 0 9vh;width:100%}
.hero-eyebrow{color:#e9d9c2;font-size:.74rem;letter-spacing:.4em;text-transform:uppercase;font-weight:600}
.hero-title{font-size:clamp(3rem,9vw,6.5rem);line-height:.94;margin:18px 0 22px;color:#fff;text-shadow:0 4px 30px rgba(0,0,0,.4)}
.hero-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:34px}
.hero-price{font-family:BreadleySans,serif;font-size:1.9rem;color:#fff}
.hero-price s{color:rgba(255,255,255,.6);font-size:1.1rem;margin-left:12px}
.hero-tag{font-size:.78rem;letter-spacing:.1em;color:#e9d9c2;border:1px solid rgba(255,255,255,.45);padding:7px 14px}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;color:#fff;font-size:.66rem;letter-spacing:.3em;text-transform:uppercase;opacity:.8;display:flex;flex-direction:column;align-items:center;gap:8px;animation:floaty 2.4s ease-in-out infinite}
.scroll-hint span{display:block;width:1px;height:34px;background:rgba(255,255,255,.6)}
@keyframes floaty{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* CTA inline */
.cta{
  display:inline-flex;align-items:center;gap:11px;
  background:var(--wa);color:#fff;padding:17px 30px;
  font-size:.95rem;letter-spacing:.04em;font-weight:600;
  box-shadow:var(--shadow);transition:filter .25s,transform .25s;
}
.cta:hover{filter:brightness(1.07);transform:translateY(-2px)}
.cta svg{width:22px;height:22px}
.cta.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.7);box-shadow:none}
.cta.ghost:hover{background:#fff;color:var(--accent)}

/* ---------- SECCIONES DE IMAGEN ---------- */
.shots{padding:0}
.shot-section{padding:9vh 0;background:var(--bg);transition:background .5s ease}
.shot-section.alt{background:var(--bg-alt)}
.shot-wrap{max-width:1080px;margin:0 auto;padding:0 24px;overflow:hidden}
.shot{width:100%;height:auto;max-height:90vh;object-fit:cover;margin:0 auto;display:block;
  box-shadow:var(--shadow);transform:scale(1.08);transition:transform 1.5s cubic-bezier(.16,.84,.3,1)}
.shot-tall .shot{max-width:680px}
.shot-cap{max-width:620px;margin:30px auto 0;text-align:center;padding:0 24px}
.shot-cap h3{font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.1;margin-bottom:10px;color:var(--text)}
.shot-cap p{font-size:.98rem;color:var(--text-soft);max-width:48ch;margin:0 auto}
.shot-cap .eyebrow{display:block;margin-bottom:12px}

/* Intro / claim */
.claim{padding:14vh 0 8vh;text-align:center}
.claim h2{font-size:clamp(2.2rem,5vw,3.8rem);line-height:1.06;max-width:16ch;margin:18px auto 0;color:var(--text)}
.claim .eyebrow{display:block}

/* ---------- FRANJA BENEFICIOS ---------- */
.beltline{background:var(--accent);color:#fff;padding:8vh 0}
.belt-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;text-align:center}
.belt-ico{width:58px;height:58px;line-height:58px;margin:0 auto 14px;border:1px solid rgba(255,255,255,.3);font-size:1.5rem}
.belt h3{font-size:1.1rem;color:#fff;margin-bottom:6px}
.belt p{font-size:.84rem;color:rgba(255,255,255,.75);line-height:1.5}

/* ---------- CTA FINAL ---------- */
.final{position:relative;padding:18vh 0;text-align:center;color:#fff;overflow:hidden}
.final-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.final::after{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(to bottom,rgba(14,66,78,.78),rgba(10,30,36,.9))}
.final .wrap{position:relative;z-index:2}
.final .eyebrow{color:#e9d9c2}
.final h2{font-size:clamp(2.4rem,5vw,4rem);line-height:1.05;margin:16px auto 16px;max-width:18ch}
.final p{color:rgba(255,255,255,.85);max-width:54ch;margin:0 auto 36px;font-size:1.05rem}

/* ---------- FOOTER ---------- */
footer{background:#0c1114;color:#cfcfca;padding:70px 0 30px}
html[data-theme="dark"] footer{background:#070b0d;border-top:1px solid var(--line)}
.footer-grid{max-width:1180px;margin:0 auto;padding:0 32px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}
.footer-logo{height:40px;margin-bottom:18px}
.footer-desc{font-size:.9rem;color:#9b9b95;max-width:36ch;line-height:1.7}
.footer-heading{font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:.9rem;color:#b4b4ae;transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-bottom{max-width:1180px;margin:48px auto 0;padding:24px 32px 0;border-top:1px solid #2a2f31;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-copy{font-size:.82rem;color:#8a8a82}
.footer-payments{display:flex;gap:8px}
.payment-badge{font-size:.7rem;letter-spacing:.04em;color:#cfcfca;border:1px solid #3a3a3a;padding:5px 11px}

/* ---------- WHATSAPP FLOTANTE (idéntico a catalogo.sentza.com) ---------- */
.wa-widget{position:fixed;right:24px;bottom:24px;z-index:1000;display:flex;align-items:flex-end;gap:12px}
.wa-bubble{position:relative;max-width:230px;margin-bottom:6px;background:#fff;
  border-radius:14px !important;padding:12px 14px;box-shadow:0 6px 22px rgba(0,0,0,0.16);
  transform-origin:bottom right;animation:wa-pop .45s cubic-bezier(.22,1,.36,1) 1.2s both}
.wa-bubble::after{content:"";position:absolute;right:-7px;bottom:16px;width:0;height:0;
  border-top:8px solid transparent;border-bottom:8px solid transparent;border-left:9px solid #fff}
.wa-bubble-link{display:block;font-size:.9rem;line-height:1.35;color:#1c1c1c;text-decoration:none}
.wa-bubble-name{display:block;font-size:.72rem;font-weight:600;color:#0A0A0A;margin-bottom:3px}
.wa-bubble-close{position:absolute;top:4px;right:6px;border:none;background:transparent;color:#b0b0b0;
  font-size:1rem;line-height:1;cursor:pointer;padding:2px}
.wa-bubble-close:hover{color:#777}
.wa-bubble-hidden{display:none}
.wa-float{flex:0 0 auto;display:flex;align-items:center;justify-content:center;height:60px;width:60px;
  border-radius:30px !important;background:#25D366;color:#fff;text-decoration:none;
  box-shadow:0 8px 24px rgba(0,0,0,0.22);transition:box-shadow .2s ease,transform .2s ease}
.wa-float:hover{box-shadow:0 10px 28px rgba(0,0,0,0.3);transform:translateY(-2px)}
.wa-float svg{width:60px;height:60px;padding:14px;box-sizing:border-box}
@keyframes wa-pop{from{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}

/* ---------- REVEAL ---------- */
.reveal{opacity:0;transform:translateY(46px);transition:opacity 1s cubic-bezier(.16,.84,.3,1),transform 1s cubic-bezier(.16,.84,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.in .shot{transform:scale(1)}
.fade{opacity:0;transition:opacity 1.1s ease}
.fade.in{opacity:1}

@media (prefers-reduced-motion:reduce){
  .reveal,.shot,.fade{transition:none !important;opacity:1 !important;transform:none !important}
  .scroll-hint,.wa-float{animation:none}
}

/* ---------- RESPONSIVE ---------- */
@media (max-width:900px){
  .belt-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:600px){
  .wrap,.shot-wrap{padding-left:18px;padding-right:18px}
  .topbar{padding:13px 16px}
  .topbar.solid{padding:10px 16px}
  .topbar-cta span{display:none}
  .topbar-cta{padding:11px 13px}
  .shot-section{padding:7vh 0}
  .belt-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .wa-widget{right:16px;bottom:16px;gap:10px}
  .wa-bubble{max-width:200px;font-size:.85rem}
  .wa-float{height:56px;width:56px;border-radius:28px !important}
  .wa-float svg{width:56px;height:56px;padding:13px}
}