:root {
  /* Partida 3 -- tema claro. Nombres de variable conservados por compatibilidad
     con todo el archivo; los valores ahora son la paleta clara aprobada
     (ancla: rojo oído de bullín del logo oficial de Santoro). */
  --bg: #EDE6D8;       /* rawhide -- fondo base */
  --bg2: #F1EBDF;       /* rawhide, tono 2 -- nosotros / certs */
  --bg3: #F5F0E6;       /* rawhide, tono 3 -- proceso / contacto / video */
  --surface: #FAF7F1;   /* vellum -- tarjetas y superficies elevadas */
  --gold: #7B2C26;      /* oxblood -- acento principal (logo) */
  --gold2: #96453D;     /* oxblood claro -- hover / énfasis */
  --brass: #A97C3D;     /* latón -- acento secundario, solo elementos grandes */
  --cream: #241C16;     /* ink -- texto/encabezados prominentes */
  --warm: #6B6055;      /* taupe -- texto secundario */
  --text: #241C16;      /* ink -- texto de cuerpo */
  --muted: #7A6F60;     /* taupe claro -- texto terciario / captions */
  --line: rgba(36,28,22,0.14);
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Barlow', sans-serif;
  --font-ui: 'Barlow Condensed', sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

/* ── NOISE TEXTURE ── */

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: .4;
}

/* ── NAV ── */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 4rem;
  background: linear-gradient(to bottom, rgba(237,230,216,.95) 0%, transparent 100%);
  backdrop-filter: blur(8px);
  transition: background .4s;
}

nav.scrolled {
  background: rgba(237,230,216,.97);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: .25em;
  color: var(--gold);
  text-decoration: none;
}

.nav-logo span {
  color: var(--cream);
}

.nav-links {
  display: flex;
  gap: 2.4rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: .8rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--warm);
  text-decoration: none;
  transition: color .3s;
}

.nav-links a:hover {
  color: var(--gold2);
}

.nav-cta {
  font-family: var(--font-ui);
  font-size: .78rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: .55rem 1.4rem;
  text-decoration: none;
  transition: background .3s, color .3s;
}

.nav-cta:hover {
  background: var(--gold);
  color: var(--bg);
}

/* ── HERO ── */

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/hero/hero-bg.webp');
  background-size: cover;
  background-position: center 30%;
  filter: grayscale(.35) sepia(.2) brightness(1.05) contrast(.95);
  transform: scale(1.06);
  animation: heroZoom 12s ease-out forwards;
}

@keyframes heroZoom { to { transform: scale(1); } }

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(237,230,216,.88) 45%, rgba(237,230,216,.3) 100%),
                  linear-gradient(to top, rgba(237,230,216,.75) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-left: 8rem;
  max-width: 720px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp .9s .4s forwards;
}

@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }

.hero-tag {
  font-family: var(--font-ui);
  font-size: .72rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.4rem;
  display: flex;
  align-items: center;
  gap: .8rem;
}

.hero-tag::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--gold);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  color: var(--cream);
  margin-bottom: 1.6rem;
}

.hero h1 em {
  font-style: italic;
  color: var(--gold2);
}

.hero-desc {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--warm);
  max-width: 480px;
  margin-bottom: 2.8rem;
}

.hero-actions {
  display: flex;
  gap: 1.2rem;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  font-family: var(--font-ui);
  font-size: .8rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  background: var(--gold);
  color: var(--bg);
  padding: .9rem 2.4rem;
  text-decoration: none;
  font-weight: 600;
  transition: background .3s, transform .2s;
}

.btn-primary:hover {
  background: var(--gold2);
  transform: translateY(-2px);
}

.btn-outline {
  font-family: var(--font-ui);
  font-size: .8rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cream);
  border-bottom: 1px solid var(--warm);
  padding-bottom: .2rem;
  text-decoration: none;
  transition: color .3s, border-color .3s;
}

.btn-outline:hover {
  color: var(--gold2);
  border-color: var(--gold2);
}

.hero-scroll {
  position: absolute;
  bottom: 3rem;
  right: 4rem;
  z-index: 2;
  writing-mode: vertical-rl;
  font-family: var(--font-ui);
  font-size: .65rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: .8rem;
  opacity: 0;
  animation: fadeUp .9s 1s forwards;
}

.hero-scroll::after {
  content: '';
  width: 1px;
  height: 50px;
  background: var(--gold);
  animation: lineGrow 1.5s 1.5s ease forwards;
  transform-origin: top;
  transform: scaleY(0);
}

@keyframes lineGrow { to { transform: scaleY(1); } }

/* ── DIVIDER ── */

.gold-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
  opacity: .35;
}

/* ── SECTION BASE ── */

.section-tag {
  font-family: var(--font-ui);
  font-size: .68rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  gap: .8rem;
}

.section-tag::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--gold);
}

h2.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 300;
  color: var(--cream);
  line-height: 1.2;
}

h2.section-title em {
  font-style: italic;
  color: var(--gold2);
}

/* ── ABOUT ── */

.about {
  background: var(--bg2);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-img-wrap {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
}

.about-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .8s ease;
}

.about-img-wrap:hover img {
  transform: scale(1.04);
}

.about-img-wrap::before {
  content: '';
  position: absolute;
  top: -1.5rem;
  left: -1.5rem;
  width: 60%;
  height: 60%;
  border-top: 1px solid var(--gold);
  border-left: 1px solid var(--gold);
  z-index: 2;
  pointer-events: none;
}

.about-img-wrap::after {
  content: '';
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  width: 60%;
  height: 60%;
  border-bottom: 1px solid var(--gold);
  border-right: 1px solid var(--gold);
  pointer-events: none;
}

.about-text {
  padding-right: 2rem;
}

.about-text p {
  color: var(--warm);
  line-height: 1.9;
  font-size: .97rem;
  margin-top: 1.4rem;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.stat-item {

}

.stat-num {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 600;
  color: var(--gold);
  display: block;
  line-height: 1;
}

.stat-label {
  font-family: var(--font-ui);
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: .3rem;
}

/* ── PRODUCTS ── */

.products {
  background: var(--bg);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  margin-top: 4rem;
}

.product-card {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  cursor: pointer;
}

.product-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s ease;
}

.product-card:hover img {
  transform: scale(1.07);
}

.product-card:hover .product-overlay {
  background: linear-gradient(to bottom, rgba(237,230,216,.94) 0%, rgba(237,230,216,.55) 60%, transparent 80%),
              linear-gradient(to top, rgba(237,230,216,.92) 35%, transparent 75%);
}

.product-card:hover .product-desc {
  max-height: 100px;
  opacity: 1;
}

.product-link::after {
  content: '→';
}

.product-card:hover .product-link {
  max-height: 50px;
  opacity: 1;
}

/* ── PROCESS ── */

.process {
  background: var(--bg3);
  position: relative;
  overflow: hidden;
}

.process::before {
  content: 'PROCESO';
  position: absolute;
  right: -2rem;
  top: 50%;
  transform: translateY(-50%) rotate(90deg);
  font-family: var(--font-display);
  font-size: 12rem;
  font-weight: 600;
  color: rgba(123,44,38,.04);
  letter-spacing: .05em;
  pointer-events: none;
  white-space: nowrap;
}

.process-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 5rem;
}

.process-header p {
  max-width: 380px;
  color: var(--warm);
  font-size: .95rem;
  line-height: 1.8;
}

.step:last-child {
  border-right: 1px solid var(--line);
}

.step:hover .step-num {
  color: var(--gold);
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--cream);
  margin-bottom: .6rem;
}

.step p {
  font-size: .85rem;
  color: var(--muted);
  line-height: 1.75;
}

/* ── CHEMICALS BANNER ── */

.chemicals-banner {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.chem-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(.35) sepia(.2) brightness(1.05) contrast(.95);
}

.chem-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(237,230,216,.85) 40%, transparent 100%);
}

.chem-content {
  position: relative;
  z-index: 2;
  padding: 6rem 8rem;
  max-width: 620px;
}

.chem-content h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  color: var(--cream);
  line-height: 1.15;
  margin-bottom: 1.4rem;
}

.chem-content h2 em {
  font-style: italic;
  color: var(--gold2);
}

.chem-content p {
  color: var(--warm);
  font-size: .96rem;
  line-height: 1.85;
  margin-bottom: 2.2rem;
}

/* Chemical products chips */

.chem-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: 2.5rem;
}

.chip {
  font-family: var(--font-ui);
  font-size: .68rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  border: 1px solid rgba(123,44,38,.3);
  color: var(--gold);
  padding: .4rem 1rem;
  transition: background .3s, border-color .3s;
}

.chip:hover {
  background: rgba(123,44,38,.1);
  border-color: var(--gold);
}

.gallery-strip {
  background: var(--bg);
  padding: 5rem 0;
  overflow: hidden;
}

.gallery-strip-header {
  padding: 0 8rem 3rem;
}

.strip-track {
  display: flex;
  gap: 5px;
  animation: stripScroll 20s linear infinite;
  width: max-content;
}

@keyframes stripScroll {
      0% { transform: translateX(0); }
      100% { transform: translateX(-50%); }
    }

.strip-track:hover {
  animation-play-state: paused;
}

.strip-img {
  width: 540px;
  height: 380px;
  object-fit: cover;
  flex-shrink: 0;
  transition: filter .5s, transform .5s;
  cursor: pointer;
}

.strip-img:hover {
  filter: brightness(1.05);
  transform: scale(1.02);
}

/* ── CERTIFICATIONS ── */

.certs-left {
  padding: 7rem 5rem 7rem 8rem;
  border-right: 1px solid var(--line);
}

.certs-right {
  padding: 7rem 8rem 7rem 5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.cert-list {
  margin-top: 3rem;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left .3s;
}

.cert-item:hover {
  padding-left: .5rem;
}

.cert-item:hover .cert-icon {
  border-color: var(--gold);
}

.cert-info {

}

.cert-name {
  font-family: var(--font-ui);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--cream);
  font-weight: 500;
}

.cert-desc {
  font-size: .82rem;
  color: var(--muted);
  margin-top: .2rem;
}

.cert-icon {
  width: 100px;
  height: auto;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  flex-shrink: 0;
  font-size: 1.1rem;
  transition: border-color .3s;
}

.certs-img:hover img {
  transform: scale(1.04);
  filter: brightness(.8);
}

.certs-img-caption {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  right: 2rem;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 300;
  font-style: italic;
  color: var(--cream);
  line-height: 1.3;
}

.contact {
  background: var(--bg3);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

.contact-left p {
  color: var(--warm);
  line-height: 1.9;
  font-size: .96rem;
  margin-top: 1.4rem;
  margin-bottom: 2.5rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.contact-info-icon {
  color: var(--gold);
  font-size: 1rem;
  margin-top: .15rem;
  flex-shrink: 0;
}

.contact-info-text {
  font-size: .88rem;
  color: var(--warm);
  line-height: 1.6;
}

.contact-info-label {
  font-family: var(--font-ui);
  font-size: .65rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: .2rem;
}

/* Redes sociales dentro del formulario */

.social-links-title {
  font-family: var(--font-ui);
  font-size: .68rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: .6rem;
}

.social-links-title::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--gold);
}

.social-link-cards {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.social-link-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .9rem 1.2rem;
  border: 1px solid var(--line);
  text-decoration: none;
  background: var(--surface);
  transition: border-color .3s, background .3s, padding-left .3s;
  position: relative;
  overflow: hidden;
}

.social-link-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .3s;
}

.social-link-card.insta::before {
  background: #e1306c;
}

.social-link-card.fb::before {
  background: #4267B2;
}

.social-link-card.wa::before {
  background: #25D366;
}

.social-link-card.li::before {
  background: #0077b5;
}

.social-link-card:hover {
  border-color: var(--gold);
  background: rgba(123,44,38,.05);
  padding-left: 1.5rem;
}

.social-link-card:hover::before {
  transform: scaleY(1);
}

.slc-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.social-link-card.insta .slc-icon {
  color: #e1306c;
}

.social-link-card.fb .slc-icon {
  color: #4267B2;
}

.social-link-card.wa .slc-icon {
  color: #25D366;
}

.social-link-card.li .slc-icon {
  color: #0077b5;
}

.slc-text {
  flex: 1;
}

.slc-name {
  font-family: var(--font-ui);
  font-size: .72rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
}

.slc-handle {
  font-size: .9rem;
  color: var(--cream);
  display: block;
  margin-top: .1rem;
}

.slc-arrow {
  color: var(--gold);
  font-size: 1rem;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity .3s, transform .3s;
}

.social-link-card:hover .slc-arrow {
  opacity: 1;
  transform: translateX(0);
}

.wa-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: .7rem;
}

.wa-tooltip {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: .82rem;
  padding: .55rem 1.1rem;
  white-space: nowrap;
  opacity: 0;
  transform: translateX(10px);
  transition: opacity .3s, transform .3s;
  pointer-events: none;
}

.wa-float:hover .wa-tooltip {
  opacity: 1;
  transform: translateX(0);
}

.wa-bubble {
  background: #25D366;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(37,211,102,.4);
  cursor: pointer;
  text-decoration: none;
  color: #fff;
  transition: transform .3s, box-shadow .3s;
  animation: waPop .6s 2s both;
}

.wa-bubble:hover {
  transform: scale(1.1);
  box-shadow: 0 8px 32px rgba(37,211,102,.55);
}

@keyframes waPop {
      0%   { transform: scale(0.6); opacity: 0; }
      70%  { transform: scale(1.12); }
      100% { transform: scale(1); opacity: 1; }
    }

/* ── FOOTER ── */

footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 3.5rem 8rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: .25em;
  color: var(--gold);
}

.footer-logo span {
  color: var(--cream);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  font-family: var(--font-ui);
  font-size: .68rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color .3s;
}

.footer-links a:hover {
  color: var(--gold);
}

.footer-right {
  text-align: right;
}

.footer-copy {
  font-size: .78rem;
  color: var(--muted);
}

.footer-social {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  margin-top: .8rem;
}

.footer-social a {
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: .8rem;
  text-decoration: none;
  transition: border-color .3s, color .3s;
}

.footer-social a:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ── SCROLL REVEAL ── */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s ease, transform .8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) and (orientation: landscape) {
  .hero {
    height: auto;
    padding-top: 5rem;
    padding-bottom: 3rem;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    padding: 0;
    max-width: 720px;
    margin: 0 auto;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-desc {
    font-size: .9rem;
  }

  .products-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .about {
    grid-template-columns: 1fr;
  }

  .certs {
    grid-template-columns: 1fr;
  }

  .contact {
    grid-template-columns: 1fr;
  }

  .gallery-strip-header {
    padding: 0 2rem 2rem;
  }

  .strip-img {
    width: 300px;
    height: 200px;
  }

  nav {
    padding: 1rem 1.5rem;
  }

}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--cream);
  display: block;
  transition: .3s;
}

html, body {
  width: 100%;
  overflow-x: hidden;
}

.cert-icon img {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.certs {
  background: var(--bg2);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
}

.certs-right, .certs-left {
  height: auto;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-bottom: 8rem;
  overflow: hidden;
  padding: 6rem 2rem;
}

section {
  padding: 7rem 8rem;
  min-height: auto;
}

* {
  max-width: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  overflow-x: hidden;
}

.logo-santoro {
  width: 100%;
  max-width: 450px;
  /* tamaño máximo en compu */
  height: auto;
  display: block;
  margin: 3rem auto 0;
}

@media (max-width: 900px) {
  nav {
    padding: 1.2rem 1.8rem;
  }

  .nav-links, .nav-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  section {
    padding: 4.5rem 1.8rem;
    padding-left: 1.5rem !important;
    padding-right: 1.5rem !important;
  }

  .hero-content {
    padding-left: 1.8rem;
    padding-right: 1.8rem;
  }

  .hero-scroll {
    display: none;
  }

  .about {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about-text {
    padding-right: 0;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .process-header {
    flex-direction: column;
    gap: 1.2rem;
  }

  .process-steps {
    grid-template-columns: 1fr 1fr;
    gap: 1.5px;
  }

  .step:last-child {
    border-right: none;
  }

  .chem-content {
    padding: 4rem 1.8rem;
  }

  .certs {
    grid-template-columns: 1fr;
    display: block;
  }

  .certs-left {
    padding: 4rem 1.8rem;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .certs-right {
    padding: 4rem 1.8rem;
  }

  .contact {
    grid-template-columns: 1fr;
    gap: 3.5rem;
    padding: 4.5rem 1.8rem;
  }

  footer {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 3rem 1.8rem;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .footer-right {
    text-align: left;
  }

  .footer-social {
    justify-content: flex-start;
  }

  .wa-float {
    bottom: 1.2rem;
    right: 1.2rem;
  }

  .certs-left, .certs-right {
    padding-left: 1.5rem !important;
    padding-right: 1.5rem !important;
    padding: 3rem 1.5rem !important;
    width: 100%;
  }

  .hero, .certs, .about, .contact {
    width: 100%;
  }

  .strip-img {
    width: 260px;
    height: 180px;
  }

  .strip-track {
    animation: stripScroll 10s linear infinite;
  }

  .logo-santoro {
    max-width: 280px;
  }

}

.product-desc {
  font-size: 0.9rem;
  color: var(--warm);
  line-height: 1.7;
  margin-top: .7rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height .5s ease, opacity .4s;
  opacity: 0;
  margin: 10px 0;
}

.product-specs strong {
  color: var(--gold);
  font-weight: 600;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 10px;
  text-decoration: none;
  max-height: 0;
  overflow: hidden;
  transition: 0.3s ease;
  opacity: 0;
  border: 1px solid rgba(123,44,38,0.3);
  padding: 8px 12px;
  border-radius: 8px;
  width: fit-content;
}

.product-link:hover {
  background: var(--gold);
  color: var(--bg);
  border-color: var(--gold);
}

/* RESPONSIVE */

.product-specs {
  list-style: none;
  padding: 0;
  margin: 15px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  transform: translateY(10px);
  transition: 0.4s ease;
}

.product-card:hover .product-specs {
  opacity: 1;
  transform: translateY(0);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  content-visibility: auto;
}

.product-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(237,230,216,.88) 0%, rgba(237,230,216,.4) 55%, transparent 75%),
              linear-gradient(to top, rgba(237,230,216,.85) 25%, transparent 65%);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 22px;
  transition: background .4s;
}

.product-overlay p, .product-overlay h3, .product-overlay ul {
  margin: 0;
}

.product-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--cream);
  line-height: 1.1;
  margin: 0 0 10px 0;
}

.product-specs li {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.5;
}

.product-cat {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 6px !important;
  opacity: 0.8;
  font-weight: 800;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
  gap: 30px;
  margin-top: 60px;
}

.step::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      circle at top left,
      rgba(123,44,38,0.22),
      transparent 55%
    );
  opacity: 0;
  transition: opacity .6s ease;
  z-index: 0;
}

.step:hover {
  background: rgba(123,44,38,.04);
  transform: translateY(-14px)
    scale(1.02);
  border-color: rgba(123,44,38,0.4);
  box-shadow: 0 25px 50px rgba(36,28,22,0.18);
}

.step:hover::before {
  opacity: 1;
}

.step > * {
  position: relative;
  z-index: 2;
}

.step-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 18px;
  margin: 15px 0;
  background: var(--surface);
  transition: transform .8s cubic-bezier(.19,1,.22,1),
    filter .8s ease;
}

.step:hover .step-img {
  transform: scale(1.08);
  filter: brightness(.82)
    contrast(1.08);
}

.step-num {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 600;
  color: var(--brass);
  line-height: 1;
  margin-bottom: 14px;
  transition: color .3s;
  letter-spacing: 2px;
  opacity: .9;
}

.step-icon {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--brass);
  font-size: 1.15rem;
  transition: transform .5s ease,
    opacity .5s ease;
}

.step:hover .step-icon {
  border-color: var(--gold);
  background: rgba(123,44,38,.08);
  transform: rotate(12deg) scale(1.15);
}

.step {
  padding: 2.5rem 2rem;
  border-left: 1px solid var(--line);
  position: relative;
  transition: transform .55s cubic-bezier(.19,1,.22,1),
    box-shadow .55s ease,
    border-color .55s ease;
  overflow: hidden;
  border-radius: 24px;
  background: linear-gradient(180deg, var(--surface), var(--bg));
  border: 1px solid rgba(36,28,22,0.12);
  isolation: isolate;
  opacity: 0;
  transform: translateY(70px)
    scale(.95);
  animation: luxuryReveal 1s cubic-bezier(.19,1,.22,1)
    forwards;
}

.step:nth-child(2) {
  animation-delay: .15s;
}

.step:nth-child(3) {
  animation-delay: .3s;
}

.step:nth-child(4) {
  animation-delay: .45s;
}

@keyframes luxuryReveal{

  to{
    opacity:1;
    transform:
      translateY(0)
      scale(1);
  }

}

.video-section {
  width: 100%;
  padding: 80px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--bg3);
}

/* CONTENEDOR DEL VIDEO */

.process-video {
  width: 80%;
  max-width: 900px;
  margin: 50px auto 0;
  border-radius: 20px;
  overflow: hidden;
}

/* VIDEO DE GOOGLE DRIVE */

.process-video iframe {
  width: 100%;
  aspect-ratio: 16/9;
  height: auto;
  display: block;
  border: none;
  border-radius: 20px;
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 70px;
    right: 0;
    width: 100%;
    background: var(--surface);
    flex-direction: column;
    align-items: center;
    display: none;
    padding: 20px 0;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    margin: 15px 0;
  }

  .nav-cta {
    display: none;
  }

  .process-steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
  }

  .step {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    border-radius: 20px;
  }

  .step-img {
    width: 100%;
    height: 190px;
  }

  .process {
    padding: 80px 24px;
  }

  .section-title {
    font-size: 42px;
    line-height: 1.1;
  }

  .process-header p {
    font-size: 18px;
    line-height: 1.8;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .product-card {
    min-height: 380px;
  }

  .product-name {
    font-size: 1.1rem;
  }

  .product-specs li {
    font-size: 0.82rem;
  }

  .process-video {
    width: 100%;
    margin-top: 30px;
  }

  .process-video iframe {
    width: 100%;
    aspect-ratio: 16/9;
    height: auto;
  }

}