/* ============================================================
   EL EMPORIO — Main Stylesheet
   Colors: Navy #0d1b8e · Blue #1565c0 · Bright #1e90ff · White #fff
   ============================================================ */

/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:   #0d1b8e;
  --blue:   #1565c0;
  --mid:    #1e90ff;
  --light:  #63b3ed;
  --white:  #ffffff;
  --off:    #f4f7ff;
  --dark:   #0a1060;
  --text:   #1a2340;
  --muted:  #5a6a8a;
  --radius: 14px;
  --shadow: 0 8px 40px rgba(13,27,142,.13);
  --trans:  .35s cubic-bezier(.4,0,.2,1);
  --font:   'Montserrat', sans-serif;
  --font2:  'Raleway', sans-serif;
  --nav-h:  76px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.7;
}

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; gap: .5rem;
  background: linear-gradient(135deg, var(--mid), var(--navy));
  color: #fff;
  padding: .85rem 2.2rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .03em;
  border: none; cursor: pointer;
  transition: transform var(--trans), box-shadow var(--trans);
  box-shadow: 0 6px 24px rgba(30,144,255,.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(30,144,255,.5); }
.btn-primary.full  { width: 100%; justify-content: center; }

.btn-secondary {
  display: inline-flex; align-items: center; gap: .5rem;
  background: transparent;
  color: #fff;
  padding: .85rem 2.2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  border: 2px solid rgba(255,255,255,.55);
  cursor: pointer;
  transition: all var(--trans);
  backdrop-filter: blur(6px);
}
.btn-secondary:hover { background: rgba(255,255,255,.15); border-color: #fff; }

/* ── Section helpers ──────────────────────────────────────── */
.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}
.section-container.center { text-align: center; }
.section-label {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mid);
  background: rgba(30,144,255,.1);
  padding: .3rem .9rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}
.section-label.light { color: var(--light); background: rgba(255,255,255,.1); }
.section-title {
  font-family: var(--font2);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--navy);
  margin-bottom: 1.2rem;
}
.section-title.light { color: #fff; }
.section-title span { color: var(--mid); }

/* ── Reveal animations ────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.reveal-right { transform: translateX(60px); }
.reveal.visible { opacity: 1; transform: none; }

/* ============================================================
   NAVBAR
============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background var(--trans), box-shadow var(--trans), backdrop-filter var(--trans);
}
.navbar.scrolled {
  background: rgba(10, 16, 96, .92);
  backdrop-filter: blur(16px);
  box-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-logo { display: flex; align-items: center; }
.nav-logo-img { height: 44px; width: auto; }
.nav-logo-fallback {
  display: none;
  font-family: var(--font2);
  font-size: 1.5rem;
  font-weight: 300;
  color: #fff;
  letter-spacing: -.01em;
}
.nav-logo-fallback strong { font-weight: 900; color: var(--light); }
.nav-links {
  display: flex;
  gap: 2rem;
  margin-left: auto;
}
.nav-links a {
  color: rgba(255,255,255,.85);
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 2px;
  transition: color var(--trans);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--mid);
  transition: width var(--trans);
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }

.btn-nav-wa {
  display: inline-flex; align-items: center; gap: .45rem;
  background: #25d366;
  color: #fff;
  padding: .5rem 1.3rem;
  border-radius: 50px;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
  transition: background var(--trans), transform var(--trans);
}
.btn-nav-wa:hover { background: #1ebc5a; transform: scale(1.04); }

.hamburger {
  display: none;
  flex-direction: column; justify-content: center; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: .4rem; margin-left: auto;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--trans);
}
.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); }

/* ============================================================
   HERO
============================================================ */
.hero {
  position: relative;
  height: 100svh;
  min-height: 640px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-video-wrap {
  position: absolute; inset: 0;
}
.hero-video-wrap video {
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(160deg,
    rgba(10,16,96,.88) 0%,
    rgba(13,27,142,.75) 40%,
    rgba(21,101,192,.6) 100%);
}
/* Fallback background when no video */
.hero-video-wrap::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--dark) 0%, var(--navy) 50%, var(--blue) 100%);
  z-index: -1;
}

.hero-content {
  position: relative; z-index: 2;
  text-align: center;
  color: #fff;
  padding: 0 1.5rem;
  max-width: 860px;
  animation: heroFadeIn 1.2s ease forwards;
}
@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: none; }
}

.hero-logo-wrap { margin-bottom: 1.4rem; }
.hero-logo-img  { height: 120px; margin: 0 auto; filter: drop-shadow(0 4px 24px rgba(30,144,255,.5)); }

.hero-sub {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--light);
  margin-bottom: .7rem;
}
.hero-title {
  font-family: var(--font2);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 1rem;
  text-shadow: 0 2px 20px rgba(0,0,0,.4);
}
.hero-title span {
  background: linear-gradient(90deg, var(--light), var(--mid));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,.8);
  max-width: 600px;
  margin: 0 auto 2rem;
}
.hero-ctas { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  color: rgba(255,255,255,.5);
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.hero-scroll-hint span {
  display: block;
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,.5));
  animation: scrollLine 1.8s ease infinite;
}
@keyframes scrollLine {
  0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50%  { opacity: 1; transform: scaleY(1); transform-origin: top; }
  100% { opacity: 0; transform: scaleY(1) translateY(20px); }
}

/* ============================================================
   STATS BAR
============================================================ */
.stats-bar {
  background: linear-gradient(135deg, var(--navy), var(--blue));
  padding: 2.8rem 2rem;
}
.stats-container {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 2rem;
}
.stat-item {
  text-align: center;
  color: #fff;
  display: flex; flex-direction: column; align-items: center;
}
.stat-item p { font-size: .82rem; color: rgba(255,255,255,.65); letter-spacing: .05em; text-transform: uppercase; margin-top: .3rem; }
.stat-num {
  font-family: var(--font2);
  font-size: 3rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(to right, #fff, var(--light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-plus {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--light);
  vertical-align: super;
}
.stat-divider {
  width: 1px; height: 60px;
  background: rgba(255,255,255,.2);
}

/* ============================================================
   NOSOTROS
============================================================ */
.nosotros {
  padding: 8rem 2rem;
  background: var(--white);
}
.nosotros .section-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}
.nosotros-text p {
  color: var(--muted);
  margin-bottom: 1rem;
  font-size: .97rem;
}
.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin-top: 2rem;
}
.feat-card {
  padding: 1.4rem;
  border: 1px solid rgba(13,27,142,.1);
  border-radius: var(--radius);
  background: var(--off);
  transition: transform var(--trans), box-shadow var(--trans);
}
.feat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feat-card i {
  font-size: 1.6rem;
  color: var(--mid);
  margin-bottom: .7rem;
}
.feat-card h4 { font-size: .95rem; font-weight: 700; color: var(--navy); margin-bottom: .3rem; }
.feat-card p  { font-size: .83rem; color: var(--muted); }

.nosotros-image { display: flex; justify-content: center; }
.img-stack {
  position: relative;
  width: 420px; max-width: 100%;
  height: 460px;
}
.img-deco {
  position: absolute;
  top: -20px; right: -20px;
  width: 100%; height: 100%;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--mid), var(--navy));
  opacity: .12;
  z-index: 0;
}
.img-placeholder {
  position: relative; z-index: 1;
  width: 100%; height: 100%;
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(145deg, var(--off), #dbeafe);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
}
.img-placeholder img { width: 65%; height: auto; opacity: .85; }
.img-placeholder-inner {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%;
}
.img-placeholder-inner i { font-size: 7rem; color: var(--blue); opacity: .3; }

/* ============================================================
   MARCAS SLIDER
============================================================ */
.marcas {
  padding: 7rem 0;
  background: linear-gradient(145deg, var(--dark) 0%, var(--navy) 50%, var(--blue) 100%);
  overflow: hidden;
}
.marcas-header {
  text-align: center;
  padding: 0 2rem;
  margin-bottom: 3.5rem;
}
.marcas-header p { color: rgba(255,255,255,.65); max-width: 500px; margin: 0 auto; }

.slider-wrapper {
  position: relative;
  overflow: hidden;
  margin-bottom: 1.4rem;
  /* fade edges */
  mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
}
.slider-track {
  display: flex;
  gap: 1.2rem;
  width: max-content;
  animation: slide 28s linear infinite;
}
.reverse-track { animation: slideReverse 24s linear infinite; }

@keyframes slide {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@keyframes slideReverse {
  from { transform: translateX(-50%); }
  to   { transform: translateX(0); }
}
.slider-wrapper:hover .slider-track  { animation-play-state: paused; }

.brand-card {
  flex-shrink: 0;
  min-width: 170px;
  height: 80px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  transition: background var(--trans), transform var(--trans);
  cursor: default;
}
.brand-card:hover { background: rgba(255,255,255,.16); transform: scale(1.05); }
.brand-card.alt { background: rgba(255,255,255,.04); }
.brand-inner {
  display: flex; align-items: center; gap: .7rem;
  color: rgba(255,255,255,.85);
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .02em;
  padding: 0 1.4rem;
}
.brand-inner i { color: var(--light); font-size: .75rem; }

/* ============================================================
   PRODUCTOS
============================================================ */
.productos {
  padding: 8rem 2rem;
  background: var(--off);
}
.productos .section-title { margin-bottom: 1.5rem; }

/* Tab switcher */
.productos-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.8rem;
  flex-wrap: wrap;
}
.tab-btn {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .7rem 1.8rem;
  border-radius: 50px;
  border: 2px solid rgba(13,27,142,.15);
  background: var(--white);
  color: var(--muted);
  font-family: var(--font);
  font-size: .9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--trans);
}
.tab-btn:hover { border-color: var(--mid); color: var(--mid); }
.tab-btn.active {
  background: linear-gradient(135deg, var(--mid), var(--navy));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 24px rgba(30,144,255,.35);
}
.tab-btn i { font-size: .85rem; }
.productos-grid.hidden { display: none !important; }
.prod-icon.perf { background: linear-gradient(135deg, #a855f7, #6d28d9); }

.productos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
  margin-top: 1rem;
  text-align: left;
}
.prod-card {
  background: var(--white);
  padding: 2rem 1.8rem;
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(13,27,142,.07);
  border: 1px solid rgba(13,27,142,.07);
  transition: transform var(--trans), box-shadow var(--trans);
  position: relative; overflow: hidden;
}
.prod-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--mid), var(--navy));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--trans);
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.prod-card:hover::before { transform: scaleX(1); }
.prod-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--mid), var(--navy));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.1rem;
}
.prod-icon i { font-size: 1.4rem; color: #fff; }
.prod-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--navy); margin-bottom: .5rem; }
.prod-card p  { font-size: .88rem; color: var(--muted); }

/* ============================================================
   CONTACTO
============================================================ */
.contacto {
  padding: 8rem 2rem;
  background: var(--white);
}
.contacto-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}
.contacto-info .section-title { color: var(--navy); margin-bottom: 1rem; }
.contacto-info > p { color: var(--muted); margin-bottom: 2rem; }

.contact-items { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 2rem; }
.contact-item {
  display: flex; align-items: center; gap: 1.1rem;
  padding: 1rem 1.3rem;
  border-radius: var(--radius);
  border: 1px solid rgba(13,27,142,.1);
  background: var(--off);
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
  color: var(--text);
}
.contact-item:hover { transform: translateX(6px); box-shadow: var(--shadow); border-color: var(--mid); }
.contact-item.wa:hover { background: #f0fff6; border-color: #25d366; }
.contact-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--mid), var(--navy));
  display: flex; align-items: center; justify-content: center;
}
.contact-item.wa .contact-icon { background: linear-gradient(135deg, #25d366, #128c4f); }
.contact-icon i { color: #fff; font-size: 1.1rem; }
.contact-item strong { display: block; font-size: .8rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); margin-bottom: .1rem; }
.contact-item span  { font-size: .95rem; font-weight: 600; color: var(--navy); }

.social-links { display: flex; gap: .8rem; }
.social-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--off);
  border: 1px solid rgba(13,27,142,.12);
  display: flex; align-items: center; justify-content: center;
  color: var(--blue);
  font-size: 1rem;
  transition: all var(--trans);
}
.social-btn:hover { background: var(--blue); color: #fff; border-color: var(--blue); transform: translateY(-3px); }
.social-btn.wa:hover { background: #25d366; border-color: #25d366; }

/* Form */
.contacto-form-wrap {
  background: var(--off);
  border: 1px solid rgba(13,27,142,.09);
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: var(--shadow);
}
.contact-form h3 {
  font-family: var(--font2);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 1.8rem;
}
.form-group { margin-bottom: 1.2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group label {
  display: block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .4rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: .85rem 1.1rem;
  border: 1.5px solid rgba(13,27,142,.15);
  border-radius: 10px;
  font-family: var(--font);
  font-size: .95rem;
  color: var(--text);
  background: #fff;
  transition: border-color var(--trans), box-shadow var(--trans);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--mid);
  box-shadow: 0 0 0 4px rgba(30,144,255,.12);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-note {
  text-align: center;
  font-size: .82rem;
  color: var(--muted);
  margin-top: 1rem;
}
.form-note a { color: var(--mid); font-weight: 600; }
.form-note a:hover { text-decoration: underline; }

/* ============================================================
   FOOTER
============================================================ */
.footer {
  background: linear-gradient(135deg, var(--dark), var(--navy));
  color: rgba(255,255,255,.7);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}
.footer-brand p { font-size: .88rem; line-height: 1.7; margin: 1rem 0 1.5rem; }
.footer-logo { height: 50px; margin-bottom: .6rem; }
.footer-logo-fallback {
  display: none;
  font-family: var(--font2);
  font-size: 1.6rem;
  font-weight: 300;
  color: #fff;
  margin-bottom: .6rem;
}
.footer-logo-fallback strong { font-weight: 900; color: var(--light); }
.footer-social { display: flex; gap: .7rem; }
.footer-social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.7);
  font-size: .9rem;
  transition: all var(--trans);
}
.footer-social a:hover { background: var(--mid); border-color: var(--mid); color: #fff; transform: translateY(-3px); }
.footer-links-col h5 {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  margin-bottom: 1.2rem;
}
.footer-links-col ul li { margin-bottom: .65rem; }
.footer-links-col ul li a,
.footer-links-col ul li span {
  font-size: .88rem;
  color: rgba(255,255,255,.65);
  transition: color var(--trans);
  display: flex; align-items: center; gap: .5rem;
}
.footer-links-col ul li a:hover { color: #fff; }
.footer-links-col ul li i { color: var(--light); font-size: .8rem; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center;
  padding: 1.4rem 2rem;
  font-size: .8rem;
  color: rgba(255,255,255,.3);
}

/* ============================================================
   WHATSAPP FLOAT
============================================================ */
.wa-float {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: #25d366;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 1.8rem;
  box-shadow: 0 6px 30px rgba(37,211,102,.5);
  z-index: 999;
  transition: transform var(--trans), box-shadow var(--trans);
  animation: waPulse 2.5s ease infinite;
}
.wa-float:hover {
  transform: scale(1.12);
  box-shadow: 0 10px 40px rgba(37,211,102,.6);
  animation: none;
}
@keyframes waPulse {
  0%, 100% { box-shadow: 0 6px 30px rgba(37,211,102,.5); }
  50%       { box-shadow: 0 6px 50px rgba(37,211,102,.75), 0 0 0 10px rgba(37,211,102,.1); }
}
.wa-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%; transform: translateY(-50%);
  background: #111;
  color: #fff;
  font-size: .78rem;
  font-weight: 700;
  white-space: nowrap;
  padding: .35rem .8rem;
  border-radius: 6px;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--trans);
}
.wa-float:hover .wa-tooltip { opacity: 1; }

/* ============================================================
   SCROLL TO TOP
============================================================ */
.scroll-top {
  position: fixed;
  bottom: 6.5rem; right: 2rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid rgba(255,255,255,.15);
  color: #fff;
  font-size: .95rem;
  cursor: pointer;
  z-index: 999;
  opacity: 0; visibility: hidden;
  transition: all var(--trans);
  display: flex; align-items: center; justify-content: center;
}
.scroll-top.show { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--mid); transform: translateY(-3px); }

/* ============================================================
   RESPONSIVE
============================================================ */
@media (max-width: 1024px) {
  .nosotros .section-container { grid-template-columns: 1fr; gap: 3rem; }
  .nosotros-image { order: -1; }
  .img-stack { height: 320px; }
  .contacto-inner { grid-template-columns: 1fr; gap: 3rem; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  :root { --nav-h: 66px; }
  .nav-links, .btn-nav-wa { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: rgba(10,16,96,.97);
    backdrop-filter: blur(16px);
    padding: 2rem;
    gap: 1.5rem;
    border-top: 1px solid rgba(255,255,255,.1);
  }
  .btn-nav-wa { display: none !important; }
  .hamburger { display: flex; }

  .hero-title { font-size: clamp(2.2rem, 9vw, 3.5rem); }
  .hero-logo-img { height: 80px; }

  .stat-divider { display: none; }
  .stats-container { gap: 1.2rem; }

  .features-grid { grid-template-columns: 1fr; }
  .produtos-grid,
  .productos-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 520px) {
  .produtos-grid,
  .productos-grid { grid-template-columns: 1fr; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .contacto-form-wrap { padding: 1.6rem; }
}