/* ============================================================
   B&B Óptica Integral — styles.css
   Paleta anclada al dorado del logo, editorial japandi.
   ============================================================ */

:root {
  --pb-bone: #f7f3ec;
  --pb-cream: #efe8dc;
  --pb-paper: #fcfaf4;
  --pb-stone: #e3dcce;
  --pb-mist: #d8d1c3;
  --pb-ink: #1b1e22;
  --pb-graphite: #2a2f35;
  --pb-ash: #494e54;
  --pb-smoke: #767b80;
  --pb-gold: #b08d5c;
  --pb-gold-soft: #cbb682;
  --font-serif: "Cormorant Garamond", "EB Garamond", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", "Helvetica Neue", system-ui, -apple-system, sans-serif;
  --ease-japandi: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-stage: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ---------- Reset y base ---------- */
html { color-scheme: light; scroll-behavior: smooth; }
* { margin: 0; padding: 0; box-sizing: border-box; border-color: var(--pb-stone); }
body {
  background: var(--pb-bone);
  color: var(--pb-ink);
  overflow-x: hidden;
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--pb-gold); color: var(--pb-bone); }
img { display: block; }
button, a, input, textarea, select { touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
section[id] { scroll-margin-top: 90px; }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--pb-gold);
  outline-offset: 3px;
}

.skip-link {
  position: absolute; top: -100%; left: 0; z-index: 9999;
  background: var(--pb-ink); color: var(--pb-bone);
  padding: 0.75rem 1.25rem; font-size: 0.85rem;
}
.skip-link:focus { top: 0; }

/* ---------- Tipografía ---------- */
.pb-eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--pb-gold);
  font-weight: 500;
}
.pb-eyebrow-line { display: inline-flex; align-items: center; gap: 0.75rem; }
.pb-eyebrow-line::before { content: ""; width: 2rem; height: 1px; background: var(--pb-gold); }

.pb-display { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.02em; line-height: 0.97; }
.pb-heading { font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.015em; line-height: 1.05; }
.pb-body { font-family: var(--font-sans); font-weight: 400; letter-spacing: 0.005em; line-height: 1.75; color: var(--pb-ash); }

.pb-h-xl { font-size: clamp(3.4rem, 9vw, 8.5rem); }
.pb-h-lg { font-size: clamp(2.6rem, 6vw, 5.25rem); }
.pb-h-md { font-size: clamp(2.1rem, 4vw, 3.4rem); }
.pb-h-sm { font-size: clamp(1.4rem, 2.2vw, 1.9rem); }

.pb-num {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  color: var(--pb-smoke);
}

/* ---------- Utilidades ---------- */
.pb-hairline { height: 1px; background: var(--pb-stone); width: 100%; }
.pb-vline { width: 1px; background: var(--pb-stone); height: 100%; }

.pb-noise { position: relative; }
.pb-noise::after {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: 0.025;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/></svg>");
}

.pb-grid-bg {
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--pb-stone) 55%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--pb-stone) 55%, transparent) 1px, transparent 1px);
  background-size: 80px 80px;
}

.pb-section {
  padding-top: clamp(4rem, 8vw, 7.5rem);
  padding-bottom: clamp(4rem, 8vw, 7.5rem);
}
.pb-container {
  width: 100%;
  max-width: 1400px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

.sep { height: 1px; background: linear-gradient(to right, transparent, color-mix(in srgb, var(--pb-gold) 35%, transparent), transparent); }

.sec-head { max-width: 680px; }
.sec-head .pb-eyebrow-line { margin-bottom: 1.25rem; }
.sec-head h2 { margin-top: 0.25rem; }

/* ---------- Enlaces y botones ---------- */
.pb-link {
  position: relative;
  display: inline-block;
  color: var(--pb-ink);
  transition: color 0.4s var(--ease-japandi);
}
.pb-link::after {
  content: "";
  position: absolute; left: 0; bottom: -2px;
  height: 1px; width: 100%;
  background: currentColor;
  transform-origin: right;
  transform: scaleX(0);
  transition: transform 0.6s var(--ease-japandi);
}
.pb-link:hover::after { transform-origin: left; transform: scaleX(1); }

.pb-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--pb-bone);
  background: var(--pb-ink);
  border: 1px solid var(--pb-ink);
  text-decoration: none;
  overflow: hidden;
  isolation: isolate;
  cursor: pointer;
  transition: color 0.5s var(--ease-japandi);
}
.pb-btn .material-icons { font-size: 1.1rem; }
.pb-btn::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--pb-gold);
  transform: translateY(101%);
  transition: transform 0.6s var(--ease-japandi);
  z-index: -1;
}
.pb-btn:hover::before { transform: translateY(0); }
.pb-btn--outline { background: transparent; color: var(--pb-ink); }
.pb-btn--outline::before { background: var(--pb-ink); }
.pb-btn--outline:hover { color: var(--pb-bone); }

/* ---------- Tarjetas ---------- */
.pb-card {
  position: relative;
  background: var(--pb-paper);
  border: 1px solid var(--pb-stone);
  transition: border-color 0.6s var(--ease-japandi),
              transform 0.7s var(--ease-japandi),
              background 0.6s var(--ease-japandi);
}
.pb-card:hover { border-color: var(--pb-ink); transform: translateY(-4px); }

.pb-corner { position: absolute; width: 22px; height: 22px; border-color: var(--pb-gold); }
.pb-corner--tl { top: -1px; left: -1px; border-top: 1px solid; border-left: 1px solid; }
.pb-corner--tr { top: -1px; right: -1px; border-top: 1px solid; border-right: 1px solid; }
.pb-corner--bl { bottom: -1px; left: -1px; border-bottom: 1px solid; border-left: 1px solid; }
.pb-corner--br { bottom: -1px; right: -1px; border-bottom: 1px solid; border-right: 1px solid; }

/* ---------- Fotos ---------- */
.pb-photo { position: relative; overflow: hidden; background: var(--pb-cream); }
.pb-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.6s var(--ease-japandi), filter 0.8s var(--ease-japandi);
  filter: grayscale(12%) contrast(1.02);
}
.pb-photo:hover img { transform: scale(1.04); filter: grayscale(0%) contrast(1.05); }

@media (hover: none) {
  .pb-photo img { filter: grayscale(0%) contrast(1.05); }
  @keyframes pb-touch-drift {
    0%, 100% { transform: scale(1.02); }
    50%      { transform: scale(1.045); }
  }
  .pb-photo > img, .pb-photo picture > img { animation: pb-touch-drift 12s ease-in-out infinite; }
}

.pb-mask { display: inline-block; overflow: hidden; vertical-align: bottom; }

/* ---------- Animaciones ---------- */
@keyframes pb-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.pb-marquee-track { display: inline-flex; gap: 4rem; animation: pb-marquee 38s linear infinite; will-change: transform; }

@keyframes pb-drift {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50%      { transform: translate3d(2%, -1.5%, 0) scale(1.04); }
}
.pb-drift { animation: pb-drift 18s ease-in-out infinite; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease-stage), transform 0.8s var(--ease-stage); }
.reveal.visible { opacity: 1; transform: none; }

/* Firma: iris con rayos (eco del logo) */
.sig-ray { stroke: var(--pb-gold); stroke-width: 1; opacity: 0; animation: rayIn 0.9s var(--ease-japandi) forwards; }
@keyframes rayIn { to { opacity: 1; } }
.sig-iris { fill: none; stroke: var(--pb-gold-soft); stroke-width: 1.5; stroke-dasharray: 300; stroke-dashoffset: 300; animation: drawIris 2.2s var(--ease-japandi) forwards; }
@keyframes drawIris { to { stroke-dashoffset: 0; } }
.sig-pupil { fill: var(--pb-gold); opacity: 0; animation: pupilIn 0.6s var(--ease-japandi) 1.6s forwards; }
@keyframes pupilIn { to { opacity: 1; } }

/* ---------- Navegación ---------- */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; height: 76px; z-index: 1000;
  background: color-mix(in srgb, var(--pb-bone) 88%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: box-shadow 0.5s var(--ease-japandi), background 0.5s var(--ease-japandi);
}
.nav.scrolled { box-shadow: 0 1px 0 var(--pb-stone); background: color-mix(in srgb, var(--pb-bone) 96%, transparent); }
.nav .pb-hairline { position: absolute; bottom: 0; left: 0; }
.nav-inner {
  max-width: 1400px; margin: 0 auto; height: 100%;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.nav-logo img { height: 46px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 2.2rem; }
.nav-links a { text-decoration: none; font-size: 0.82rem; letter-spacing: 0.05em; }
.nav-cta { padding: 0.7rem 1.3rem; font-size: 0.72rem; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--pb-ink); }
.nav-toggle .material-icons { font-size: 2rem; }

.nav-overlay {
  position: fixed; inset: 0; z-index: 1100; background: var(--pb-bone);
  transform: translateY(-100%); transition: transform 0.6s var(--ease-japandi);
  display: flex; flex-direction: column; padding: 2rem clamp(1.25rem, 4vw, 3rem);
  overscroll-behavior: contain;
}
.nav-overlay.open { transform: translateY(0); }
.nav-overlay-top { display: flex; justify-content: space-between; align-items: center; height: 76px; }
.nav-overlay-links { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 3rem; }
.nav-overlay-links a { text-decoration: none; font-family: var(--font-serif); font-size: 2.2rem; color: var(--pb-ink); }
.nav-overlay-close { background: none; border: none; cursor: pointer; color: var(--pb-ink); }
.nav-overlay-close .material-icons { font-size: 2rem; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; overflow: hidden; display: flex; align-items: center; padding-top: 76px; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; width: 100%; }
.hero-content { position: relative; z-index: 3; padding-block: clamp(2rem, 5vh, 4rem); }
.hero h1 { margin: 1.75rem 0; text-wrap: balance; }
.hero h1 .pb-mask { display: block; }
.hero h1 span span { display: inline-block; transform: translateY(100%); transition: transform 1s var(--ease-japandi); }
.hero.loaded h1 span span { transform: translateY(0); }
.hero h1 .pb-mask:nth-child(2) span { transition-delay: 0.12s; }
.hero-p { max-width: 34rem; margin-bottom: 2.5rem; }
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-photo { position: relative; z-index: 2; aspect-ratio: 3 / 4; }
.hero-sig { position: absolute; top: 9%; right: 5%; z-index: 1; width: 230px; height: 230px; opacity: 0.45; }
.hero-blur { position: absolute; border-radius: 50%; filter: blur(80px); z-index: 0; }
.hero-blur.b1 { width: 300px; height: 300px; background: color-mix(in srgb, var(--pb-gold) 14%, transparent); top: 10%; left: -5%; animation: float 8s ease-in-out infinite; }
.hero-blur.b2 { width: 200px; height: 200px; background: color-mix(in srgb, var(--pb-gold-soft) 12%, transparent); bottom: 10%; right: 30%; animation: float 7s ease-in-out infinite; }
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-20px) rotate(3deg); }
}

/* ---------- Manifiesto ---------- */
.manif { background: var(--pb-cream); }
.manif-inner { display: grid; grid-template-columns: 0.4fr 1px 1.6fr; gap: clamp(2rem, 4vw, 3.5rem); }
.manif-left { display: flex; flex-direction: column; gap: 1rem; }

/* ---------- Marquee ---------- */
.marquee { background: var(--pb-bone); overflow: hidden; }
.marquee-band { padding: 1.75rem 0; }
.marquee-item {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  color: var(--pb-ink);
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 4rem;
}
.marquee-dot { color: var(--pb-gold); }

/* ---------- Servicios ---------- */
.serv-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.75rem; margin-top: clamp(2.5rem, 5vw, 4rem); }
.serv-card { padding: clamp(2rem, 3vw, 2.75rem); display: flex; flex-direction: column; gap: 1.1rem; }
.serv-card .material-icons { font-size: 2rem; color: var(--pb-gold); }
.serv-card a {
  text-decoration: none;
  font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--pb-ink);
  margin-top: auto;
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.serv-card a .material-icons { font-size: 1rem; color: inherit; }

/* ---------- Valores ---------- */
.val-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.75rem; margin-top: clamp(2.5rem, 5vw, 4rem); }
.val-card { padding: 2rem; display: flex; flex-direction: column; gap: 1rem; }
.val-card .material-icons { font-size: 2rem; color: var(--pb-gold); }
.val-card h3 { font-family: var(--font-serif); font-size: 1.4rem; font-weight: 500; }

/* ---------- Cifras ---------- */
.cifras { background: var(--pb-ink); position: relative; }
.cifras .pb-eyebrow { color: var(--pb-gold-soft); }
.cifras-content { position: relative; z-index: 1; }
.cifras-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2.5rem; }
.cifra-num { color: var(--pb-bone); font-family: var(--font-serif); }
.cifra-label { color: color-mix(in srgb, var(--pb-bone) 70%, transparent); margin-top: 0.6rem; display: block; }
.cifras-bg {
  position: absolute; inset: 0; opacity: 0.05;
  background-image: radial-gradient(var(--pb-gold-soft) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

/* ---------- Productos ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.75rem; margin-top: clamp(2.5rem, 5vw, 4rem); }
.prod-card {
  display: flex; flex-direction: column;
  background: var(--pb-paper);
  border: 1px solid var(--pb-stone);
  transition: border-color 0.6s var(--ease-japandi), transform 0.7s var(--ease-japandi);
}
.prod-card:hover { border-color: var(--pb-ink); transform: translateY(-6px); }
.prod-photo { aspect-ratio: 4 / 5; }
.prod-body { padding: 1.6rem; display: flex; flex-direction: column; gap: 0.8rem; flex: 1; }
.prod-body h3 { font-family: var(--font-serif); font-size: 1.55rem; font-weight: 500; line-height: 1.1; }
.prod-body a {
  text-decoration: none;
  font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--pb-ink);
  margin-top: auto;
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.prod-body a .material-icons { font-size: 1rem; }

/* ---------- Galería ---------- */
.gal-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.75rem; margin-top: clamp(2.5rem, 5vw, 4rem); }
.gal-item .pb-photo { margin-bottom: 0.85rem; }
.gal-item:nth-child(1) .pb-photo { aspect-ratio: 3 / 4; }
.gal-item:nth-child(2) .pb-photo { aspect-ratio: 1 / 1; }
.gal-item:nth-child(3) .pb-photo { aspect-ratio: 4 / 3; }
.gal-item:nth-child(4) .pb-photo { aspect-ratio: 4 / 3; }
.gal-item:nth-child(5) .pb-photo { aspect-ratio: 3 / 4; }
.gal-item:nth-child(6) .pb-photo { aspect-ratio: 1 / 1; }

/* ---------- Proceso ---------- */
.proc { background: var(--pb-cream); }
.proc-grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr 1px 1fr 1px 1fr;
  gap: 1.75rem;
  margin-top: clamp(2.5rem, 5vw, 4rem);
  align-items: stretch;
}
.proc-step { display: flex; flex-direction: column; gap: 1rem; }

/* ---------- Historia ---------- */
.hist-inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 5vw, 4.5rem); align-items: center; }
.hist-photo { aspect-ratio: 4 / 5; }
.hist-title { margin: 1.25rem 0; }
.hist-p { margin-bottom: 1.25rem; }
.hist-p2 { margin-bottom: 2rem; }

/* ---------- Testimonios ---------- */
.test { background: var(--pb-cream); }
.test-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.75rem; margin-top: clamp(2.5rem, 5vw, 4rem); }
.test-card { padding: 2rem; display: flex; flex-direction: column; gap: 1rem; }
.test-quote { font-family: var(--font-serif); font-size: 3rem; line-height: 0.5; color: var(--pb-gold); }
.test-stars { color: var(--pb-gold-soft); display: flex; gap: 2px; }
.test-stars .material-icons { font-size: 1.1rem; }
.test-author { display: flex; align-items: center; gap: 0.85rem; margin-top: auto; }
.test-author img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.test-author strong { font-weight: 500; font-size: 0.95rem; }
.test-author span { display: block; font-size: 0.8rem; color: var(--pb-smoke); }

/* ---------- Contacto ---------- */
.cont-inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 5vw, 4.5rem); margin-top: clamp(2.5rem, 5vw, 4rem); }
.cont-form { display: flex; flex-direction: column; gap: 1.6rem; }
.form-label { display: block; margin-bottom: 0.35rem; }
.cont-submit { width: 100%; justify-content: center; }
.cont-wa { color: var(--pb-ash); }

.pb-input {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--pb-mist);
  padding: 1rem 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--pb-ink);
  outline: none;
  transition: border-color 0.4s var(--ease-japandi);
}
.pb-input:focus { border-color: var(--pb-ink); }
.pb-input::placeholder { color: var(--pb-smoke); }

.form-success {
  display: none;
  padding: 1rem;
  background: var(--pb-cream);
  border-left: 3px solid var(--pb-gold);
  font-size: 0.9rem;
  color: var(--pb-ash);
}
.form-success.show { display: block; }

.cont-info { display: flex; flex-direction: column; gap: 2rem; }
.cont-item { display: flex; gap: 1rem; align-items: flex-start; }
.cont-item .material-icons, .cont-item .fab { font-size: 1.4rem; color: var(--pb-gold); margin-top: 2px; }
.cont-item strong { display: block; font-weight: 500; margin-bottom: 0.25rem; }
.cont-map { margin-top: 1rem; }
.cont-map iframe { display: block; border: 0; filter: grayscale(20%); }

/* ---------- FAQ ---------- */
.faq-list { margin-top: clamp(2.5rem, 5vw, 4rem); max-width: 860px; }
.faq-item { border-bottom: 1px solid var(--pb-stone); }
.faq-q {
  width: 100%;
  background: none; border: none; cursor: pointer;
  padding: 1.5rem 0;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  text-align: left;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--pb-ink);
}
.faq-q .material-icons { transition: transform 0.4s var(--ease-japandi); color: var(--pb-gold); flex-shrink: 0; }
.faq-q[aria-expanded="true"] .material-icons { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.5s var(--ease-japandi); }
.faq-a-inner { padding-bottom: 1.5rem; }

/* ---------- Footer ---------- */
footer { background: var(--pb-ink); color: var(--pb-bone); }
footer .pb-link { color: var(--pb-bone); }
footer .pb-link:hover { color: #ffffff; }
footer .pb-body { color: color-mix(in srgb, var(--pb-bone) 72%, transparent); }
footer .pb-eyebrow, footer .pb-num { color: color-mix(in srgb, var(--pb-bone) 55%, transparent); }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 3rem; }
.footer-logo img { height: 60px; width: auto; margin-bottom: 1.25rem; }
.footer-col h4 { font-family: var(--font-serif); font-size: 1.2rem; margin-bottom: 1.25rem; color: var(--pb-bone); font-weight: 500; }
.footer-col a { display: block; text-decoration: none; margin-bottom: 0.75rem; font-size: 0.9rem; }
.footer-social { display: flex; gap: 0.75rem; margin-top: 0.5rem; }
.footer-social a {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid color-mix(in srgb, var(--pb-bone) 25%, transparent);
  color: var(--pb-bone);
  text-decoration: none;
  transition: background 0.4s var(--ease-japandi), color 0.4s var(--ease-japandi), border-color 0.4s var(--ease-japandi);
}
.footer-social a:hover { background: var(--pb-gold); border-color: var(--pb-gold); color: var(--pb-ink); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
  padding-top: 2rem; margin-top: 3rem;
  border-top: 1px solid color-mix(in srgb, var(--pb-bone) 12%, transparent);
}

/* ---------- WhatsApp flotante ---------- */
.wa-float {
  position: fixed; bottom: 24px; right: 24px;
  width: 52px; height: 52px;
  background: var(--pb-ink); color: var(--pb-bone);
  display: inline-flex; align-items: center; justify-content: center;
  z-index: 900; text-decoration: none;
  transition: background 0.4s var(--ease-japandi);
}
.wa-float .fab { font-size: 1.5rem; }
.wa-float:hover { background: var(--pb-gold); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero { min-height: 0; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-photo { aspect-ratio: 4 / 3; max-height: 420px; width: 100%; }
  .hero-sig { right: 4%; opacity: 0.3; width: 170px; height: 170px; }
  .serv-grid, .gal-grid, .test-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .prod-grid, .val-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cifras-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .manif-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .manif-inner .pb-vline { display: none; }
  .proc-grid { grid-template-columns: 1fr; gap: 0; }
  .proc-grid .pb-vline { display: none; }
  .proc-step { padding: 1.5rem 0; border-bottom: 1px solid color-mix(in srgb, var(--pb-ink) 12%, transparent); }
  .proc-step:last-child { border-bottom: 0; }
  .hist-inner, .cont-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .serv-grid, .gal-grid, .test-grid, .prod-grid, .val-grid, .cifras-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .hero-btns .pb-btn { width: 100%; justify-content: center; }
}

/* ---------- Accesibilidad: movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}