/* === Negus Cremas y Postres — Landing === */
:root {
  --rose: #F7C5CC;
  --rose-deep: #E8909C;
  --peach: #FAD9C1;
  --lavender: #DDD0F0;
  --vanilla: #FFFAF4;
  --cream: #FFF5E6;
  --choco: #3D2B1F;
  --cacao: #6B3D2E;
  --wa: #25D366;
  --wa-dark: #1cb756;
  --soft-shadow: 0 8px 30px rgba(107,61,46,0.10);
  --soft-shadow-strong: 0 18px 50px rgba(107,61,46,0.18);
  --rose-shadow: 0 14px 40px rgba(232,144,156,0.25);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Nunito', system-ui, sans-serif;
  background: var(--vanilla);
  color: var(--choco);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.serif { font-family: 'Playfair Display', Georgia, serif; }
.italic { font-style: italic; }
.accent { color: var(--rose-deep); font-style: italic; }
.eyebrow {
  font-family: 'Nunito', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--cacao);
  opacity: 0.75;
}

/* ===== Floating blob backgrounds ===== */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
  animation: floatBlob 10s ease-in-out infinite;
}
.blob.rose   { background: var(--rose); }
.blob.peach  { background: var(--peach); }
.blob.lav    { background: var(--lavender); }

@keyframes floatBlob {
  0%,100% { transform: translateY(0) scale(1); }
  50%     { transform: translateY(-26px) scale(1.06); }
}
@keyframes floatBlob2 {
  0%,100% { transform: translate(0,0) scale(1); }
  50%     { transform: translate(20px,-18px) scale(1.08); }
}

/* ===================================================
   NAV
   =================================================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 36px;
  transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.3s ease;
}
.nav.scrolled {
  background: rgba(255,250,244,0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 24px rgba(107,61,46,0.06);
  padding: 12px 36px;
}
.nav-logo {
  display: flex; align-items: center; gap: 12px;
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem; font-weight: 700; color: var(--choco);
}
.nav-logo img { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; box-shadow: var(--soft-shadow); }
.nav-logo .tag { color: var(--rose-deep); font-style: italic; font-size: 0.95rem; font-weight: 400; }
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--wa); color: #fff;
  padding: 10px 20px; border-radius: 50px;
  font-weight: 600; font-size: 0.9rem;
  box-shadow: 0 6px 20px rgba(37,211,102,0.30);
  transition: transform 0.3s, box-shadow 0.3s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(37,211,102,0.40); }
.nav-cta svg { width: 16px; height: 16px; }

@media (max-width: 640px) {
  .nav { padding: 14px 18px; }
  .nav.scrolled { padding: 10px 18px; }
  .nav-logo { font-size: 1.15rem; }
  .nav-logo .tag { display: none; }
  .nav-cta span { display: none; }
  .nav-cta { padding: 10px 12px; }
  .nav-cta svg { width: 18px; height: 18px; }
}

/* ===================================================
   HERO
   =================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  padding: 120px 24px 90px;
  isolation: isolate;
}
.hero-bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(247,197,204,0.55), transparent 55%),
    radial-gradient(ellipse at 80% 70%, rgba(221,208,240,0.45), transparent 55%),
    linear-gradient(180deg, var(--cream) 0%, var(--vanilla) 100%);
}
.hero-video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: -2;
  opacity: 0.32;
  filter: blur(2px) saturate(1.1);
}
.hero-overlay {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse at center, rgba(255,250,244,0.55) 0%, rgba(255,250,244,0.85) 70%, rgba(255,250,244,0.95) 100%);
}

.hero-inner {
  max-width: 1100px; width: 100%;
  text-align: center;
  position: relative;
  z-index: 2;
}
.hero .eyebrow { display: block; margin-bottom: 22px; opacity: 0; animation: fadeUp 1s 0.1s forwards; }

.hero h1 {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 1.02;
  color: var(--choco);
  letter-spacing: -0.02em;
  margin-bottom: 22px;
  opacity: 0; animation: fadeUp 1.1s 0.3s forwards;
}
.hero h1 .line { display: block; }
.hero h1 .accent { display: block; font-weight: 500; }

.hero-sub {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--cacao);
  max-width: 540px;
  margin: 0 auto 38px;
  opacity: 0; animation: fadeUp 1s 0.55s forwards;
}

.hero-ctas {
  display: flex; flex-wrap: wrap; gap: 14px;
  justify-content: center; align-items: center;
  opacity: 0; animation: fadeUp 1s 0.75s forwards;
}

/* Scroll cue */
.scroll-cue {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: var(--cacao); opacity: 0;
  animation: fadeUp 1s 1.4s forwards;
}
.scroll-cue .label { font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; }
.scroll-cue .arrow {
  width: 22px; height: 22px;
  animation: bounceY 2s ease-in-out infinite;
}
@keyframes bounceY {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(8px); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Particles */
.particles { position: absolute; inset: 0; pointer-events: none; z-index: 1; overflow: hidden; }
.particle {
  position: absolute;
  bottom: -40px;
  animation: floatParticle linear infinite;
  will-change: transform, opacity;
}
@keyframes floatParticle {
  0%   { transform: translateY(0) translateX(0); opacity: 0; }
  10%  { opacity: 0.8; }
  50%  { transform: translateY(-50vh) translateX(20px); opacity: 0.7; }
  90%  { opacity: 0.5; }
  100% { transform: translateY(-110vh) translateX(-15px); opacity: 0; }
}

/* ===================================================
   BUTTONS
   =================================================== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 32px; border-radius: 50px;
  font-family: 'Nunito', sans-serif;
  font-weight: 600; font-size: 1rem;
  cursor: pointer; border: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, color 0.3s ease;
  white-space: nowrap;
}
.btn svg { width: 20px; height: 20px; }
.btn-wa {
  background: var(--wa); color: #fff;
  box-shadow: 0 6px 24px rgba(37,211,102,0.30);
}
.btn-wa:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(37,211,102,0.45); background: var(--wa-dark); }
.btn-ig {
  background: transparent; color: var(--cacao);
  border: 2px solid var(--rose-deep);
  padding: 14px 30px;
}
.btn-ig:hover { background: var(--rose-deep); color: #fff; transform: translateY(-3px); box-shadow: var(--rose-shadow); }
.btn-lg { padding: 20px 44px; font-size: 1.1rem; }
.btn-outline-rose {
  background: transparent; color: var(--rose-deep);
  border: 2px solid var(--rose-deep);
}
.btn-outline-rose:hover { background: var(--rose-deep); color: #fff; transform: translateY(-3px); box-shadow: var(--rose-shadow); }

/* ===================================================
   SECTIONS: shared
   =================================================== */
section {
  position: relative;
  padding: 110px 24px;
  overflow: hidden;
}
.container { max-width: 1240px; margin: 0 auto; position: relative; z-index: 2; }

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--choco);
  line-height: 1.05;
  letter-spacing: -0.01em;
  text-align: center;
  text-wrap: balance;
}
.section-sub {
  text-align: center;
  color: var(--cacao); opacity: 0.8;
  max-width: 560px; margin: 16px auto 0;
  font-size: 1.05rem;
}

/* Decorative divider: two dots + line */
.divider {
  display: flex; align-items: center; justify-content: center;
  gap: 14px; margin: 40px auto 0;
}
.divider .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--rose-deep); }
.divider .line { width: 60px; height: 1px; background: var(--rose-deep); opacity: 0.5; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.9s ease, transform 0.9s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-stagger > * { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-stagger.in > *:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0s; }
.reveal-stagger.in > *:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.15s; }
.reveal-stagger.in > *:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.3s; }
.reveal-stagger.in > *:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.45s; }

/* ===================================================
   2. SOBRE LA MARCA
   =================================================== */
.brand {
  background: linear-gradient(180deg, var(--vanilla) 0%, var(--cream) 100%);
  padding: 130px 24px;
}
.brand-inner { max-width: 760px; margin: 0 auto; text-align: center; position: relative; z-index: 2; }
.brand .lede {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  line-height: 1.35;
  color: var(--choco);
  margin-bottom: 32px;
  text-wrap: balance;
}
.brand .body {
  font-size: 1.15rem; color: var(--cacao); line-height: 1.75;
  margin-bottom: 28px;
}
.brand .close {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-weight: 600;
  font-size: clamp(1.25rem, 1.9vw, 1.6rem);
  color: var(--rose-deep);
  line-height: 1.4;
  margin-top: 10px;
}
.brand .blob { width: 380px; height: 380px; }
.brand .blob.rose  { top: -60px; left: -80px; opacity: 0.35; }
.brand .blob.lav   { bottom: -80px; right: -80px; opacity: 0.30; animation: floatBlob2 12s ease-in-out infinite; }

/* ===================================================
   CINEMATIC BAND (between brand and catalog)
   =================================================== */
.cine-band {
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border-radius: 0;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  background: #000;
}
.cine-band video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
@media (max-width: 640px) {
  .cine-band { height: 55vh; }
}

/* ===================================================
   3. CATÁLOGO CAROUSEL
   =================================================== */
.catalog {
  background: var(--vanilla);
}
.catalog .blob.peach { width: 420px; height: 420px; top: 10%; right: -120px; opacity: 0.4; }
.catalog .blob.rose  { width: 360px; height: 360px; bottom: -120px; left: -100px; opacity: 0.35; }

.carousel {
  position: relative;
  margin-top: 64px;
  padding: 0 60px;
}
.carousel-viewport { overflow: hidden; }
.carousel-track {
  display: flex; gap: 28px;
  transition: transform 0.8s cubic-bezier(0.65, 0.05, 0.36, 1);
  will-change: transform;
}
.cat-card {
  flex: 0 0 calc((100% - 56px) / 3);
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: var(--cream);
  box-shadow: var(--soft-shadow);
  aspect-ratio: 4 / 5;
  cursor: pointer;
  transition: transform 0.5s ease, box-shadow 0.5s ease;
}
.cat-card:hover { box-shadow: var(--soft-shadow-strong); transform: translateY(-4px); }
.cat-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.7s ease;
}
.cat-card:hover img { transform: scale(1.06); }
.cat-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(232,144,156,0.0) 60%, rgba(232,144,156,0.18) 100%);
  opacity: 0; transition: opacity 0.5s ease;
  pointer-events: none;
}
.cat-card:hover::after { opacity: 1; }
.cat-card .tag {
  position: absolute; left: 22px; bottom: 22px;
  background: rgba(255,250,244,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--choco);
  padding: 10px 18px;
  border-radius: 50px;
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: 0 4px 14px rgba(107,61,46,0.10);
  z-index: 2;
}

.carousel-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255,250,244,0.95);
  border: 1px solid rgba(232,144,156,0.5);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 5;
  color: var(--rose-deep);
  box-shadow: var(--soft-shadow);
  transition: transform 0.3s, background 0.3s, color 0.3s;
}
.carousel-nav:hover { background: var(--rose-deep); color: #fff; transform: translateY(-50%) scale(1.08); }
.carousel-nav.prev { left: 0; }
.carousel-nav.next { right: 0; }
.carousel-nav svg { width: 22px; height: 22px; }

.carousel-dots {
  display: flex; gap: 8px; justify-content: center; margin-top: 28px;
}
.carousel-dots .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--rose); cursor: pointer; transition: all 0.3s;
}
.carousel-dots .dot.active { background: var(--rose-deep); width: 26px; border-radius: 4px; }

.catalog-cta { display: flex; justify-content: center; margin-top: 52px; }

@media (max-width: 1024px) {
  .cat-card { flex: 0 0 calc((100% - 28px) / 2); }
}
@media (max-width: 640px) {
  .carousel { padding: 0 12px; }
  .cat-card { flex: 0 0 100%; }
  .carousel-nav { width: 40px; height: 40px; }
  .carousel-nav.prev { left: -6px; }
  .carousel-nav.next { right: -6px; }
}

/* ===================================================
   4. CÓMO PEDIR
   =================================================== */
.steps {
  background: linear-gradient(180deg, var(--cream) 0%, var(--vanilla) 100%);
}
.steps .blob.lav { width: 360px; height: 360px; top: 5%; left: -100px; opacity: 0.35; }
.steps .blob.peach { width: 320px; height: 320px; bottom: -80px; right: -80px; opacity: 0.4; animation: floatBlob2 11s ease-in-out infinite; }

.steps-grid {
  display: grid; grid-template-columns: repeat(4, 1fr) ;
  gap: 24px; align-items: stretch;
  margin-top: 64px;
  position: relative;
}
.step-card {
  background: #fff;
  border-radius: 22px;
  padding: 36px 28px;
  border-left: 5px solid var(--rose-deep);
  box-shadow: var(--soft-shadow);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  position: relative;
}
.step-card:hover { transform: translateY(-6px); box-shadow: var(--soft-shadow-strong); }
.step-num {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 3.2rem;
  font-weight: 600;
  color: var(--rose-deep);
  line-height: 1;
  margin-bottom: 14px;
}
.step-icon {
  width: 42px; height: 42px;
  color: var(--cacao);
  margin-bottom: 14px;
}
.step-card p { font-size: 1.02rem; color: var(--cacao); line-height: 1.55; }

.step-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  color: var(--rose-deep); opacity: 0.6;
  pointer-events: none;
}
.step-arrow svg { width: 26px; height: 26px; }

@media (max-width: 1024px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .steps-grid { grid-template-columns: 1fr; }
}

/* ===================================================
   5. TESTIMONIOS — Marquee
   =================================================== */
.testimonials {
  background: var(--vanilla);
  padding-bottom: 130px;
}
.testimonials .blob.rose { width: 340px; height: 340px; top: 8%; right: -100px; opacity: 0.30; }

.marquee {
  margin-top: 60px;
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.marquee-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: marquee 60s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.testimonial {
  width: 380px;
  flex-shrink: 0;
  background: #fff;
  border-radius: 24px;
  box-shadow: var(--soft-shadow);
  padding: 32px 28px;
  position: relative;
  display: flex; flex-direction: column;
}
.testimonial .quote-mark {
  position: absolute; top: 16px; left: 18px;
  color: var(--rose); opacity: 0.6;
  width: 36px; height: 36px;
}
.testimonial .quote {
  font-style: italic; color: var(--choco);
  line-height: 1.6; font-size: 1rem;
  margin-top: 28px; margin-bottom: 24px;
  flex: 1;
}
.testimonial .sep {
  height: 1px; background: rgba(232,144,156,0.3); margin-bottom: 18px;
}
.testimonial .author { display: flex; align-items: center; gap: 14px; }
.testimonial .avatar {
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--peach) 0%, var(--rose) 100%);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Playfair Display', serif; font-weight: 600;
  color: var(--cacao); font-size: 1rem;
  flex-shrink: 0;
}
.testimonial .name { font-weight: 700; color: var(--choco); font-size: 0.95rem; }
.testimonial .occasion { font-size: 0.82rem; color: var(--cacao); opacity: 0.7; }

/* ===================================================
   6. GALERÍA INSTAGRAM
   =================================================== */
.gallery {
  background: linear-gradient(180deg, var(--vanilla) 0%, var(--cream) 100%);
}
.gallery .ig-handle { font-family: 'Playfair Display', serif; font-style: italic; color: var(--rose-deep); font-size: 1.1rem; margin-top: 8px; text-align: center; }

.ig-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
  margin-top: 56px;
}
.ig-item {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
}
.ig-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.ig-item:hover img { transform: scale(1.05); }
.ig-overlay {
  position: absolute; inset: 0;
  background: rgba(232,144,156,0.65);
  opacity: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px;
  color: #fff;
  transition: opacity 0.35s ease;
}
.ig-item:hover .ig-overlay { opacity: 1; }
.ig-overlay svg { width: 36px; height: 36px; }
.ig-overlay span { font-size: 0.85rem; font-weight: 600; letter-spacing: 0.05em; }

.gallery-cta { display: flex; justify-content: center; margin-top: 48px; }

/* ===================================================
   7. CONTACTO FINAL + FOOTER
   =================================================== */
.contact {
  background: linear-gradient(135deg, var(--rose) 0%, var(--lavender) 100%);
  padding: 130px 24px;
  position: relative;
}
.contact-card {
  max-width: 720px; margin: 0 auto;
  background: #fff;
  border-radius: 30px;
  padding: 64px 48px;
  text-align: center;
  box-shadow: 0 30px 80px rgba(107,61,46,0.18);
  animation: floatCard 6s ease-in-out infinite;
}
@keyframes floatCard {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-6px); }
}
.contact-card h2 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--choco);
  margin-bottom: 18px;
  line-height: 1.1;
}
.contact-card p {
  color: var(--cacao); font-size: 1.1rem;
  max-width: 480px; margin: 0 auto 36px;
  line-height: 1.6;
}

@media (max-width: 640px) {
  .contact-card { padding: 48px 28px; border-radius: 24px; }
}

footer {
  background: var(--cacao);
  color: var(--cream);
  padding: 70px 24px 28px;
  position: relative;
  overflow: hidden;
}
.footer-grid {
  max-width: 1240px; margin: 0 auto;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,245,230,0.15);
}
.footer-brand .logo-row { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.footer-brand .logo-row img { width: 48px; height: 48px; border-radius: 50%; }
.footer-brand .name { font-family: 'Playfair Display', serif; font-size: 1.5rem; font-weight: 700; }
.footer-brand p { color: rgba(255,245,230,0.75); font-size: 0.95rem; max-width: 280px; line-height: 1.6; }

footer h4 {
  font-family: 'Playfair Display', serif; font-style: italic;
  font-size: 1.2rem; margin-bottom: 18px; color: var(--rose);
  font-weight: 500;
}
footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
footer ul a {
  color: rgba(255,245,230,0.85);
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.95rem;
  transition: color 0.3s;
}
footer ul a:hover { color: var(--rose); }
footer ul a svg { width: 18px; height: 18px; }

.copyright {
  max-width: 1240px; margin: 24px auto 0;
  text-align: center; color: rgba(255,245,230,0.55);
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}

/* Floating WhatsApp action button */
.fab-wa {
  position: fixed; right: 24px; bottom: 24px;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--wa);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 32px rgba(37,211,102,0.45);
  z-index: 40;
  transition: transform 0.3s ease;
  animation: pulse 2.5s ease-in-out infinite;
}
.fab-wa:hover { transform: scale(1.08); }
.fab-wa svg { width: 30px; height: 30px; color: #fff; }
@keyframes pulse {
  0%,100% { box-shadow: 0 12px 32px rgba(37,211,102,0.45), 0 0 0 0 rgba(37,211,102,0.4); }
  50%     { box-shadow: 0 12px 32px rgba(37,211,102,0.45), 0 0 0 14px rgba(37,211,102,0); }
}

@media (max-width: 640px) {
  section { padding: 80px 20px; }
  .brand, .contact { padding: 90px 20px; }
  .hero { padding: 110px 20px 80px; }
  .fab-wa { width: 54px; height: 54px; right: 16px; bottom: 16px; }
  .fab-wa svg { width: 26px; height: 26px; }
  .btn { padding: 14px 26px; font-size: 0.95rem; }
  .btn-lg { padding: 16px 32px; font-size: 1rem; }
}