/* ==========================================================================
   NUTRIWAXX-EQI Premium — Editorial Dark / Gold
   ========================================================================== */

:root{
  --bg:            #0d0c08;
  --bg-alt:        #141210;
  --ink:           #f3ede1;
  --ink-dim:       #cabfa9;
  --ink-faint:     #8a8272;
  --gold:          #c9a24b;
  --gold-bright:   #e6c877;
  --line:          rgba(243,237,225,0.14);
  --shadow:        rgba(0,0,0,0.55);

  --font-display:  "Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --font-body:     -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --container:     1180px;
  --gap:           clamp(1.5rem, 4vw, 4rem);
  --radius:        2px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3{ font-family:var(--font-display); font-weight:500; margin:0; letter-spacing:-0.01em; }
p{ margin:0 0 1rem; color:var(--ink-dim); }
ul{ list-style:none; margin:0; padding:0; }

.container{ max-width:var(--container); margin:0 auto; padding:0 clamp(1.25rem,4vw,2.5rem); }

/* ---------- defensive: never hide content if JS/animation fails ---------- */
.reveal{ opacity:1; transform:none; }
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .9s cubic-bezier(.16,.8,.24,1), transform .9s cubic-bezier(.16,.8,.24,1); }
.reveal.is-visible{ opacity:1; transform:none; }
.reveal[data-split]{ opacity:1; transform:none; }

/* noise texture */
.noise-overlay{
  position:fixed; inset:0; pointer-events:none; z-index:9000; opacity:.035; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ambient background: drifting smoke + tiled brand watermark */
.bg-ambient{ position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden; }

.bg-ambient .smoke{
  position:absolute; border-radius:50%; filter:blur(70px); mix-blend-mode:screen;
  opacity:.16; will-change:transform;
}
.bg-ambient .smoke-1{
  width:60vw; height:60vw; left:-15vw; top:-10vw;
  background:radial-gradient(circle, rgba(201,162,75,0.9), transparent 70%);
  animation:smokeDrift1 34s ease-in-out infinite;
}
.bg-ambient .smoke-2{
  width:50vw; height:50vw; right:-10vw; top:20vh;
  background:radial-gradient(circle, rgba(230,200,119,0.8), transparent 70%);
  animation:smokeDrift2 42s ease-in-out infinite;
}
.bg-ambient .smoke-3{
  width:55vw; height:55vw; left:20vw; bottom:-20vw;
  background:radial-gradient(circle, rgba(154,120,60,0.8), transparent 70%);
  animation:smokeDrift3 50s ease-in-out infinite;
}
@keyframes smokeDrift1{
  0%,100%{ transform:translate(0,0) scale(1); }
  50%{ transform:translate(8vw,10vh) scale(1.15); }
}
@keyframes smokeDrift2{
  0%,100%{ transform:translate(0,0) scale(1); }
  50%{ transform:translate(-10vw,-6vh) scale(1.1); }
}
@keyframes smokeDrift3{
  0%,100%{ transform:translate(0,0) scale(1); }
  50%{ transform:translate(6vw,-8vh) scale(1.2); }
}

.bg-ambient .watermark{
  position:absolute; inset:-200px; opacity:.1;
  background-image:url("assets/img/logo-blanco.png");
  background-repeat:repeat; background-size:260px auto;
  animation:watermarkDrift 90s linear infinite;
}
@keyframes watermarkDrift{
  0%{ transform:translate(0,0); }
  100%{ transform:translate(-260px,-260px); }
}

main, .site-header, .site-footer{ position:relative; z-index:1; }

@media (prefers-reduced-motion: reduce){
  .bg-ambient .smoke, .bg-ambient .watermark{ animation:none; }
}

/* ---------- splash ---------- */
#splash{
  position:fixed; inset:0; z-index:10000; background:var(--bg);
  display:flex; align-items:center; justify-content:center;
  animation: splashHide 0.6s ease 2.2s forwards;
}
.splash-logo{ width:min(46vw,220px); animation: splashPulse 1.6s ease-in-out infinite; }
@keyframes splashPulse{ 0%,100%{ opacity:.55; } 50%{ opacity:1; } }
@keyframes splashHide{ to{ opacity:0; visibility:hidden; pointer-events:none; } }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:500;
  padding:1.1rem 0;
  background:linear-gradient(to bottom, rgba(13,12,8,0.75), transparent);
  transition:background .4s ease, padding .4s ease, border-color .4s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(13,12,8,0.92);
  backdrop-filter:blur(10px);
  padding:.7rem 0;
  border-bottom-color:var(--line);
}
.header-inner{
  max-width:var(--container); margin:0 auto; padding:0 clamp(1.25rem,4vw,2.5rem);
  display:flex; align-items:center; justify-content:space-between;
}
.brand-logo{ height:28px; width:auto; }
.main-nav{ display:flex; align-items:center; gap:clamp(1.2rem,2vw,2.2rem); font-size:.92rem; letter-spacing:.02em; }
.main-nav a{ color:var(--ink-dim); transition:color .25s ease; white-space:nowrap; }
.main-nav a:hover{ color:var(--gold-bright); }
.nav-cta{
  color:var(--bg) !important; background:var(--gold); padding:.55rem 1.1rem; border-radius:var(--radius);
  font-weight:600; transition:background .25s ease, transform .2s ease;
}
.nav-cta:hover{ background:var(--gold-bright); transform:translateY(-1px); }

.nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:8px; }
.nav-toggle span{ width:22px; height:2px; background:var(--ink); display:block; }

@media (max-width:860px){
  .main-nav{
    position:fixed; inset:0 0 0 auto; width:min(78vw,320px); height:100vh;
    background:var(--bg-alt); flex-direction:column; align-items:flex-start; justify-content:center;
    gap:1.6rem; padding:2rem clamp(1.5rem,6vw,2.5rem); font-size:1.15rem;
    transform:translateX(100%); transition:transform .45s cubic-bezier(.16,.8,.24,1);
    border-left:1px solid var(--line);
  }
  .main-nav.is-open{ transform:translateX(0); }
  .nav-toggle{ display:flex; }
  .nav-cta{ margin-top:.5rem; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  position:relative; min-height:100svh; display:flex; align-items:flex-end;
  overflow:hidden;
}
.hero-media{ position:absolute; inset:0; z-index:1; }
.hero-media img{ width:100%; height:100%; object-fit:cover; object-position:center 30%; will-change:transform; }
.hero-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(to top, rgba(13,12,8,0.96) 0%, rgba(13,12,8,0.55) 42%, rgba(13,12,8,0.35) 65%, rgba(13,12,8,0.55) 100%);
}
.hero-content{ position:relative; z-index:2; max-width:var(--container); margin:0 auto; width:100%; padding:0 clamp(1.25rem,4vw,2.5rem) clamp(5rem,10vw,7rem); }
.eyebrow{ color:var(--gold-bright); text-transform:uppercase; letter-spacing:.14em; font-size:.78rem; margin-bottom:1rem; font-weight:600; }
.hero-title{
  font-size:clamp(2.4rem, 6.4vw, 5.2rem); line-height:1.04; color:var(--ink); margin-bottom:1.4rem;
}
.hero-title span{ display:block; }
.hero-title em{ color:var(--gold-bright); font-style:normal; }
.hero-sub{ max-width:540px; font-size:clamp(1rem,1.4vw,1.15rem); color:var(--ink-dim); margin-bottom:2rem; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:1rem; }

.scroll-cue{
  position:absolute; right:clamp(1.25rem,4vw,2.5rem); bottom:2.2rem; z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:.6rem;
  color:var(--ink-faint); font-size:.72rem; letter-spacing:.14em; text-transform:uppercase;
}
.scroll-line{ width:1px; height:46px; background:linear-gradient(to bottom, var(--gold-bright), transparent); animation:scrollDown 2s ease-in-out infinite; }
@keyframes scrollDown{ 0%{ transform:scaleY(0); transform-origin:top; } 50%{ transform:scaleY(1); transform-origin:top; } 51%{ transform-origin:bottom; } 100%{ transform:scaleY(0); transform-origin:bottom; } }
@media (max-width:640px){ .scroll-cue{ display:none; } }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:.5rem;
  padding:.95rem 1.8rem; border-radius:var(--radius); font-size:.95rem; font-weight:600;
  letter-spacing:.01em; transition:transform .25s ease, background .25s ease, border-color .25s ease, color .25s ease;
  border:1px solid transparent; cursor:pointer;
}
.btn-primary{ background:var(--gold); color:#181510; }
.btn-primary:hover{ background:var(--gold-bright); transform:translateY(-2px); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--gold-bright); color:var(--gold-bright); transform:translateY(-2px); }
.btn-large{ padding:1.15rem 2.2rem; font-size:1rem; }

/* ==========================================================================
   Section scaffolding
   ========================================================================== */
section{ position:relative; padding:clamp(4.5rem,10vw,8rem) 0; }
.kicker{ color:var(--gold-bright); text-transform:uppercase; letter-spacing:.16em; font-size:.76rem; font-weight:700; margin-bottom:1rem; }
h2{ font-size:clamp(1.9rem,4vw,3.1rem); color:var(--ink); line-height:1.14; margin-bottom:1.4rem; max-width:780px; }

/* ---------- intro ---------- */
.intro{ background:var(--bg); border-top:1px solid var(--line); }
.intro-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:var(--gap); align-items:center; }
.intro-copy p{ max-width:520px; }
.intro-visual img{ border-radius:var(--radius); filter:drop-shadow(0 30px 60px var(--shadow)); }
.zoomable{
  position:relative; display:block; width:100%; padding:0; border:0; background:none; cursor:zoom-in;
}
.zoomable img{ width:100%; transition:transform .5s cubic-bezier(.16,.8,.24,1); }
.zoomable:hover img{ transform:scale(1.03); }
.zoom-icon{
  position:absolute; right:14px; bottom:14px; width:40px; height:40px; border-radius:50%;
  display:flex; align-items:center; justify-content:center; color:var(--bg);
  background:var(--gold); opacity:0; transform:translateY(6px); transition:opacity .25s ease, transform .25s ease;
}
.zoomable:hover .zoom-icon{ opacity:1; transform:translateY(0); }

/* ---------- lightbox ---------- */
.lightbox{
  position:fixed; inset:0; z-index:8000; display:flex; align-items:center; justify-content:center;
  background:rgba(13,12,8,0.94); backdrop-filter:blur(6px);
  opacity:0; visibility:hidden; transition:opacity .3s ease;
  padding:clamp(1.5rem,6vw,4rem);
}
.lightbox.is-open{ opacity:1; visibility:visible; }
.lightbox img{ max-width:100%; max-height:88vh; border-radius:var(--radius); box-shadow:0 40px 100px var(--shadow); }
.lightbox-close{
  position:absolute; top:1.5rem; right:1.5rem; width:44px; height:44px; border-radius:50%;
  background:transparent; border:1px solid var(--line); color:var(--ink); font-size:1.6rem; line-height:1;
  cursor:pointer; transition:border-color .25s ease, color .25s ease;
}
.lightbox-close:hover{ border-color:var(--gold-bright); color:var(--gold-bright); }
@media (max-width:900px){ .intro-grid{ grid-template-columns:1fr; } .intro-visual{ order:-1; max-width:280px; margin:0 auto; } }

/* ---------- stats ---------- */
.stats{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:2.5rem; }
.stat{ display:flex; flex-direction:column; gap:.6rem; }
.stat-number{ font-family:var(--font-display); font-size:clamp(2.2rem,4vw,3.2rem); color:var(--gold-bright); line-height:1; }
.stat-label{ color:var(--ink-faint); font-size:.9rem; max-width:220px; }
@media (max-width:860px){ .stats-grid{ grid-template-columns:repeat(2,1fr); row-gap:2.8rem; } }
@media (max-width:480px){ .stats-grid{ grid-template-columns:1fr; } }

/* ---------- product ---------- */
.product{ background:var(--bg); }
.product-grid{ display:grid; grid-template-columns:.9fr 1.1fr; gap:var(--gap); align-items:center; }
.product-image-wrap{
  position:relative; display:flex; align-items:center; justify-content:center;
  background:radial-gradient(ellipse at center, rgba(201,162,75,0.14), transparent 70%);
  padding:2rem;
}
.product-image-wrap img{ max-height:520px; margin:0 auto; filter:drop-shadow(0 40px 70px var(--shadow)); transition:transform .6s cubic-bezier(.16,.8,.24,1); }
.product-features{ margin:1.8rem 0; display:flex; flex-direction:column; gap:0; border-top:1px solid var(--line); }
.product-features li{ display:flex; gap:1.5rem; padding:1rem 0; border-bottom:1px solid var(--line); color:var(--ink-dim); }
.product-features li span{ flex:0 0 110px; color:var(--gold-bright); font-weight:600; font-size:.85rem; text-transform:uppercase; letter-spacing:.05em; }
@media (max-width:900px){ .product-grid{ grid-template-columns:1fr; } .product-copy{ order:2; } .product-image-wrap{ order:1; } }

/* ---------- science ---------- */
.science{ min-height:100vh; display:flex; align-items:center; overflow:hidden; }
.science-media{ position:absolute; inset:0; z-index:0; }
.science-media img{ width:100%; height:100%; object-fit:cover; will-change:transform; }
.science-scrim{ position:absolute; inset:0; background:linear-gradient(to bottom, rgba(13,12,8,0.92), rgba(13,12,8,0.8) 40%, rgba(13,12,8,0.96)); }
.science-content{ position:relative; z-index:1; padding:6rem 0; }
.science-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:2rem; margin-top:2.5rem; }
.science-item{ border-top:1px solid var(--line); padding-top:1.2rem; }
.science-index{ display:block; color:var(--gold); font-family:var(--font-display); font-size:1.4rem; margin-bottom:.6rem; }
.science-item h3{ color:var(--ink); font-size:1.1rem; margin-bottom:.5rem; }
.science-item p{ font-size:.92rem; margin:0; }
.science-footnote{ margin-top:3rem; font-size:.85rem; color:var(--ink-faint); border-top:1px solid var(--line); padding-top:1.5rem; max-width:640px; }
@media (max-width:900px){ .science-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .science-grid{ grid-template-columns:1fr; } }

/* ---------- impact gallery ---------- */
.impact{ background:var(--bg); }
.impact-gallery{ display:grid; grid-template-columns:1.3fr 1fr; gap:1.2rem; max-width:var(--container); margin:3rem auto 0; padding:0 clamp(1.25rem,4vw,2.5rem); }
.impact-photo{ position:relative; margin:0; overflow:hidden; border-radius:var(--radius); }
.impact-photo img{ width:100%; height:100%; object-fit:cover; transition:transform .8s cubic-bezier(.16,.8,.24,1); }
.impact-photo:hover img{ transform:scale(1.05); }
.impact-photo--tall{ min-height:100%; }
.impact-photo figcaption{
  position:absolute; left:0; right:0; bottom:0; padding:1.2rem 1.4rem;
  background:linear-gradient(to top, rgba(13,12,8,.85), transparent);
  color:var(--ink-dim); font-size:.85rem; letter-spacing:.02em;
}
@media (max-width:760px){ .impact-gallery{ grid-template-columns:1fr; } .impact-photo{ aspect-ratio:4/3; } }

/* ---------- gallery ---------- */
.gallery{ background:var(--bg); border-top:1px solid var(--line); }
.gallery-grid{
  display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:180px; gap:1rem; margin-top:2.5rem;
}
.gallery-item{
  position:relative; padding:0; border:0; cursor:zoom-in; overflow:hidden; border-radius:var(--radius);
  grid-column:span 1; grid-row:span 1;
}
.gallery-item--tall{ grid-row:span 2; }
.gallery-item:nth-child(1){ grid-column:span 2; }
.gallery-item img{ width:100%; height:100%; object-fit:cover; display:block; transition:transform .6s cubic-bezier(.16,.8,.24,1); }
.gallery-item:hover img{ transform:scale(1.06); }
.gallery-item .zoom-icon{ position:absolute; right:10px; bottom:10px; width:34px; height:34px; }
@media (max-width:900px){
  .gallery-grid{ grid-template-columns:repeat(2,1fr); grid-auto-rows:160px; }
  .gallery-item:nth-child(1){ grid-column:span 2; }
}
@media (max-width:520px){
  .gallery-grid{ grid-template-columns:1fr; grid-auto-rows:220px; }
  .gallery-item, .gallery-item--tall, .gallery-item:nth-child(1){ grid-column:span 1; grid-row:span 1; }
}

/* ---------- testimonials ---------- */
.testimonials{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.testi-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:1.5rem; margin-top:2.5rem; }
.testi-card{
  margin:0; padding:2rem; border:1px solid var(--line); border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(201,162,75,0.05), transparent);
}
.testi-card p{ color:var(--ink); font-size:1.05rem; font-family:var(--font-display); line-height:1.5; margin-bottom:1rem; }
.testi-card cite{ font-style:normal; color:var(--gold-bright); font-size:.85rem; letter-spacing:.04em; text-transform:uppercase; }
@media (max-width:720px){ .testi-grid{ grid-template-columns:1fr; } }

/* ---------- philosophy ---------- */
.philosophy{ background:var(--bg); }
.philosophy-inner{ max-width:760px; }
.philosophy h2{ max-width:none; }

/* ---------- contact ---------- */
.contact{ background:var(--bg-alt); border-top:1px solid var(--line); }
.contact-inner{ max-width:760px; text-align:left; }
.contact-lead{ font-size:1.05rem; max-width:560px; }
.contact-actions{ display:flex; flex-wrap:wrap; gap:1rem; margin:2rem 0 2.2rem; }
.contact-details{ display:flex; flex-wrap:wrap; gap:1.6rem; color:var(--ink-faint); font-size:.95rem; border-top:1px solid var(--line); padding-top:1.6rem; }
.contact-details a:hover{ color:var(--gold-bright); }

/* ---------- footer ---------- */
.site-footer{ padding:3rem 0; border-top:1px solid var(--line); background:var(--bg); }
.footer-inner{ display:flex; flex-direction:column; align-items:flex-start; gap:.8rem; }
.footer-logo{ height:22px; opacity:.85; margin-bottom:.4rem; }
.footer-inner p{ font-size:.82rem; color:var(--ink-faint); margin:0; }

/* ==========================================================================
   Reduced motion — only intrusive parallax is gated, not micro-interactions
   ========================================================================== */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .scroll-line{ animation:none; }
  .splash-logo{ animation:none; }
}