/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg:        #FAFAFA;
  --bg-2:      #F0EEEA;
  --paper:     #FFFFFF;
  --ink:       #171717;
  --ink-soft:  #2B2B2B;
  --ink-mute:  #6E6C67;
  --accent:    #8A6A34;   /* dark bronze / gold */
  --accent-2:  #16223D;   /* midnight blue */
  --cream:     #FAFAFA;
  --line:      rgba(23,23,23,0.10);
  --line-soft: rgba(23,23,23,0.06);

  --serif: "Playfair Display", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:   cubic-bezier(0.7, 0, 0.84, 0);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --container: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 14px;
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-soft);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.05; letter-spacing: -0.01em; font-family: var(--serif); font-weight: 600; color: var(--ink); }
ul { list-style: none; padding: 0; }
::selection { background: var(--accent); color: var(--cream); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* =============================================================
   3. Utilities
   ============================================================= */
.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--ink); color: var(--cream);
  z-index: 9999; border-radius: 8px; font-weight: 500;
  transition: top .3s var(--ease-out);
}
.skip-link:focus { top: 1rem; }

.kicker {
  font-family: var(--sans);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .9rem;
}

[data-reveal] {
  opacity: 0; transform: translateY(32px);
  transition: opacity .9s var(--ease-soft), transform .9s var(--ease-soft);
}
[data-reveal].is-revealed { opacity: 1; transform: none; }

.section-head { max-width: 640px; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section-head h2 { font-size: clamp(1.9rem, 3.4vw, 2.8rem); }

section { padding-block: clamp(4rem, 9vw, 7.5rem); }

/* =============================================================
   4. Buttons
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5rem;
  padding: .95rem 1.9rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  white-space: nowrap;
  transition: background .35s var(--ease-out), color .35s var(--ease-out),
              border-color .35s var(--ease-out), box-shadow .35s var(--ease-out);
}
.btn-primary {
  background: var(--ink);
  color: var(--cream);
  box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}
.btn-primary:hover { background: var(--accent); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--line);
}
.btn-ghost:hover { border-color: var(--ink); }
.btn-sm { padding: .6rem 1.3rem; font-size: .85rem; }
.btn-lg { padding: 1.1rem 2.3rem; font-size: 1rem; }
.btn-block { width: 100%; }

.has-magnetic { display: inline-flex; position: relative; isolation: isolate; }
.magnetic-inner {
  display: inline-flex; align-items: center; justify-content: center; gap: inherit;
  will-change: transform;
  transition: transform .8s var(--ease-soft);
}

/* =============================================================
   5. Header / Nav
   ============================================================= */
.site-header {
  position: sticky; top: 0; z-index: 100;
  /* no transform/filter/backdrop-filter here: it would become the
     containing block for position:fixed descendants (the mobile nav
     overlay) and break its full-viewport stretch. See gotcha C.3. */
  transition: box-shadow .4s var(--ease-out);
}
.site-header::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: rgba(250,250,250,0.82);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color .4s var(--ease-out);
}
.site-header.is-scrolled { box-shadow: 0 8px 24px rgba(23,23,23,0.04); }
.site-header.is-scrolled::before { border-bottom-color: var(--line); }
@supports not (backdrop-filter: blur(1px)) {
  .site-header::before { background: rgba(250,250,250,0.98); }
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 84px;
}
.logo {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--serif); font-weight: 600; font-size: 1.3rem;
  color: var(--ink); letter-spacing: -0.01em;
}
.logo span { color: var(--accent); }
.logo-icon { height: 34px; width: auto; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px;
}
.nav-toggle span { display: block; width: 22px; height: 1.5px; background: var(--ink); transition: transform .3s var(--ease-out), opacity .3s; }

.site-nav { display: flex; align-items: center; gap: clamp(1.2rem, 2vw, 2.2rem); }
.site-nav a:not(.btn) {
  font-size: .93rem; font-weight: 500; color: var(--ink-soft);
  position: relative; padding-block: .3rem;
}
.site-nav a:not(.btn)::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px;
  background: var(--accent); transition: right .35s var(--ease-out);
}
.site-nav a:not(.btn):hover::after { right: 0; }

.lang-switch { position: relative; list-style: none; }
.lang-switch summary {
  list-style: none; cursor: pointer;
  font-size: .82rem; font-weight: 600; letter-spacing: .05em;
  color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 999px;
  padding: .4rem .9rem;
}
.lang-switch summary::-webkit-details-marker { display: none; }
.lang-switch summary:hover { border-color: var(--accent); color: var(--accent); }
.lang-menu {
  position: absolute; top: calc(100% + .5rem); right: 0;
  background: var(--paper); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 16px 40px -12px rgba(23,23,23,0.2);
  display: flex; flex-direction: column; min-width: 140px;
  overflow: clip; z-index: 50;
}
.lang-menu a { padding: .6rem .9rem; font-size: .88rem; color: var(--ink-soft); }
.lang-menu a:hover { background: var(--bg-2); color: var(--ink); }
@media (max-width: 959px) {
  .lang-switch { align-self: flex-start; }
  .lang-menu { position: static; box-shadow: none; border: none; margin-top: .5rem; }
}

/* =============================================================
   6. Sections — Hero
   ============================================================= */
.hero {
  position: relative;
  min-height: 92svh;
  display: flex; align-items: center;
  padding-block: clamp(3rem, 8vw, 5rem);
  overflow: clip;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-ph {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-tint {
  position: absolute; inset: 0;
  background:
    linear-gradient(0deg, rgba(250,250,250,0.9) 0%, rgba(250,250,250,0.25) 30%, transparent 55%),
    linear-gradient(100deg, rgba(250,250,250,0.97) 0%, rgba(250,250,250,0.88) 40%, rgba(250,250,250,0.6) 66%, rgba(250,250,250,0.3) 100%);
}
.hero-grain {
  position: absolute; inset: 0; z-index: 1; opacity: 0.035; mix-blend-mode: multiply; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hero-inner { position: relative; z-index: 2; max-width: 760px; }
.hero-title {
  font-size: clamp(2.6rem, 6.4vw, 4.6rem);
  line-height: 1.02;
  max-width: 16ch;
  margin-bottom: 1.4rem;
}
.hero-title em { font-style: italic; color: var(--accent); font-weight: 500; }
.hero-sub {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--ink-mute);
  max-width: 52ch;
  margin-bottom: 2.4rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 3.5rem; }
.hero-stats { display: flex; gap: clamp(1.6rem, 4vw, 3.2rem); flex-wrap: wrap; }
.hero-stat { display: flex; flex-direction: column; }
.hero-stat strong { font-family: var(--serif); font-size: 1.7rem; color: var(--ink); }
.hero-stat span { font-size: .82rem; color: var(--ink-mute); }

/* =============================================================
   7. Trust strip
   ============================================================= */
.trust-strip { padding-block: 2.6rem; border-block: 1px solid var(--line-soft); background: var(--bg-2); }
.trust-label { text-align: center; font-size: .82rem; color: var(--ink-mute); letter-spacing: .04em; margin-bottom: 1.4rem; }
.trust-row {
  display: flex; flex-wrap: nowrap; justify-content: space-between; align-items: center;
  gap: 1.5rem; overflow-x: auto;
}
.trust-brand {
  font-family: var(--serif); font-weight: 600; font-size: clamp(1rem, 2vw, 1.4rem);
  color: var(--ink-mute); filter: grayscale(1); opacity: .55; white-space: nowrap;
  transition: opacity .35s var(--ease-out), filter .35s var(--ease-out);
  flex: 0 0 auto;
}
.trust-brand:hover { opacity: 1; filter: grayscale(0.4); color: var(--ink); }

/* =============================================================
   7.5 Zona de cobertura
   ============================================================= */
.coverage-inner {
  display: grid; gap: clamp(2rem, 4vw, 3.5rem); grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 960px) { .coverage-inner { grid-template-columns: 1.1fr 0.9fr; } }
.coverage-copy h2 { font-size: clamp(1.6rem, 2.8vw, 2.2rem); margin-bottom: 1rem; }
.coverage-sub { color: var(--ink-mute); max-width: 52ch; }
.coverage-list {
  display: flex; flex-wrap: wrap; gap: .6rem;
}
.coverage-list li {
  padding: .55rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .88rem;
  color: var(--ink-soft);
  background: var(--paper);
}

/* =============================================================
   8. Services
   ============================================================= */
.services-grid {
  display: grid; gap: clamp(1.25rem, 2vw, 2rem);
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .services-grid { grid-template-columns: repeat(3, 1fr); } }

.service-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.8rem, 2.5vw, 2.5rem);
  transition: transform .5s var(--ease-out), box-shadow .5s var(--ease-out), border-color .5s var(--ease-out);
}
.service-card:hover { box-shadow: 0 24px 48px -20px rgba(23,23,23,0.14); border-color: rgba(138,106,52,0.35); }

.service-icon {
  width: 52px; height: 52px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-2); color: var(--accent);
  margin-bottom: 1.5rem;
}
.service-icon svg { width: 24px; height: 24px; }
.service-card h3 { font-size: 1.25rem; margin-bottom: .7rem; }
.service-card p { color: var(--ink-mute); font-size: .96rem; }

.has-tilt { transform: perspective(900px) rotateX(0deg) rotateY(0deg) translateY(0); transition: transform .5s var(--ease-out); }
.has-tilt:hover { transition-duration: .15s; }

/* =============================================================
   9. Pillars (zigzag)
   ============================================================= */
.pillar-row {
  display: grid; grid-template-columns: 1fr; gap: 2rem;
  align-items: center;
  padding-block: clamp(2rem, 4vw, 3rem);
  border-top: 1px solid var(--line-soft);
}
.pillar-row:first-of-type { border-top: none; }
@media (min-width: 960px) {
  .pillar-row { grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 5vw, 5rem); }
  .pillar-row.is-reverse .pillar-figure { order: 2; }
  .pillar-row.is-reverse .pillar-text { order: 1; }
}
.pillar-figure { border-radius: var(--radius); overflow: clip; aspect-ratio: 4 / 3; position: relative; }
.pillar-figure img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.pillar-num { font-family: var(--serif); font-size: 1rem; color: var(--accent); display: block; margin-bottom: .6rem; }
.pillar-text h3 { font-size: 1.6rem; margin-bottom: .8rem; }
.pillar-text p { color: var(--ink-mute); max-width: 42ch; }

/* =============================================================
   10. Gallery (masonry-style)
   ============================================================= */
.gallery-grid {
  columns: 1; column-gap: 1.25rem;
}
@media (min-width: 720px) { .gallery-grid { columns: 2; } }
@media (min-width: 1024px) { .gallery-grid { columns: 3; } }

.gallery-item {
  break-inside: avoid; margin-bottom: 1.25rem;
  position: relative; border-radius: var(--radius); overflow: clip;
}
.gallery-item.is-portrait .gallery-ph { aspect-ratio: 4 / 5; }
.gallery-item.is-landscape .gallery-ph { aspect-ratio: 16 / 10; }
.gallery-item.is-square .gallery-ph { aspect-ratio: 1 / 1; }
.gallery-ph { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s var(--ease-out); }
.gallery-item:hover .gallery-ph { transform: scale(1.06); }
.gallery-item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 1.4rem 1.3rem 1.1rem;
  background: linear-gradient(0deg, rgba(23,23,23,0.72), transparent);
  color: #fff; font-size: .95rem; font-weight: 500;
}
.gallery-item figcaption span {
  display: block; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  color: #D9C79A; margin-bottom: .25rem; font-weight: 600;
}

/* =============================================================
   11. Testimonials
   ============================================================= */
.testimonials { background: var(--bg-2); }
.testimonials-grid { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 960px) { .testimonials-grid { grid-template-columns: repeat(3, 1fr); } }

.testimonial-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(1.8rem, 2.5vw, 2.3rem);
  display: flex; flex-direction: column; gap: 1.3rem;
}
.testimonial-stars { color: var(--accent); font-size: .95rem; letter-spacing: .15em; }
.quote-mark { width: 32px; height: 24px; color: var(--accent); opacity: .7; fill: currentColor; }
.testimonial-card p { font-size: .98rem; color: var(--ink-soft); }
.testimonial-card footer {
  display: flex; align-items: center; gap: .8rem;
  margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--line-soft);
}
.testimonial-avatar {
  flex: 0 0 auto; width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-2); color: var(--accent);
  font-family: var(--serif); font-weight: 600; font-size: .85rem;
}
.testimonial-who { display: flex; flex-direction: column; }
.testimonial-who strong { font-family: var(--serif); font-size: 1rem; color: var(--ink); font-weight: 600; }
.testimonial-who span { font-size: .82rem; color: var(--ink-mute); }

/* =============================================================
   11.5 Antes y después
   ============================================================= */
.ba-disclaimer { font-size: .82rem; color: var(--ink-mute); font-style: italic; margin-top: .5rem; }
.ba-grid { display: grid; gap: clamp(1.25rem, 2vw, 2rem); grid-template-columns: 1fr; }
@media (min-width: 960px) { .ba-grid { grid-template-columns: 1fr 1fr; } }

.ba-slider {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: clip;
  user-select: none;
}
.ba-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ba-before-wrap {
  position: absolute; inset: 0;
  clip-path: inset(0 50% 0 0);
}
.ba-before-wrap .ba-img { filter: grayscale(0.85) brightness(0.72) contrast(0.92) sepia(0.15); }
.ba-handle {
  position: absolute; top: 0; bottom: 0; left: 50%;
  width: 3px; background: var(--cream);
  transform: translateX(-50%);
  display: flex; align-items: center; justify-content: center;
  pointer-events: none;
}
.ba-handle svg {
  width: 36px; height: 36px; padding: 6px;
  background: var(--cream); color: var(--ink);
  border-radius: 50%; box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}
.ba-range {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  margin: 0; opacity: 0; cursor: ew-resize;
  -webkit-appearance: none; appearance: none;
}
.ba-range::-webkit-slider-thumb { -webkit-appearance: none; width: 100%; height: 100%; }
.ba-range::-moz-range-thumb { width: 40px; height: 100%; border: 0; background: transparent; }

/* =============================================================
   12. CTA Final / Form
   ============================================================= */
.cta-final { background: var(--ink); color: var(--cream); }
.cta-final h2, .cta-final .kicker { color: var(--cream); }
.cta-final .kicker { color: #D9C79A; }
.cta-inner { display: grid; gap: clamp(2.5rem, 5vw, 5rem); grid-template-columns: 1fr; }
@media (min-width: 960px) { .cta-inner { grid-template-columns: 1fr 1fr; align-items: start; } }

.cta-copy h2 { font-size: clamp(1.9rem, 3.2vw, 2.6rem); margin-bottom: 1rem; }
.cta-sub { color: rgba(250,250,250,0.68); max-width: 46ch; margin-bottom: 1.6rem; }
.cta-list { display: flex; flex-direction: column; gap: .7rem; }
.cta-list li {
  padding-left: 1.6rem; position: relative; color: rgba(250,250,250,0.85); font-size: .95rem;
}
.cta-list li::before {
  content: ""; position: absolute; left: 0; top: .45em; width: 8px; height: 8px;
  border-radius: 50%; background: var(--accent);
}

.cta-form {
  background: rgba(250,250,250,0.04);
  border: 1px solid rgba(250,250,250,0.14);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 3vw, 2.3rem);
  display: flex; flex-direction: column; gap: 1.1rem;
}
.form-row { display: flex; flex-direction: column; gap: .5rem; }
.form-row label { font-size: .8rem; letter-spacing: .03em; color: rgba(250,250,250,0.65); }
.form-row input, .form-row select {
  background: transparent;
  border: none; border-bottom: 1px solid rgba(250,250,250,0.25);
  color: var(--cream);
  font-family: var(--sans); font-size: 1rem;
  padding: .6rem .1rem;
  transition: border-color .3s var(--ease-out);
}
.form-row select { appearance: none; }
.form-row select option { color: var(--ink); }
.form-row input::placeholder { color: rgba(250,250,250,0.35); }
.form-row input:focus, .form-row select:focus { border-color: var(--accent); outline: none; }
.form-note { font-size: .78rem; color: rgba(250,250,250,0.5); }
.form-note a { text-decoration: underline; text-underline-offset: 3px; }
.form-success {
  display: none; font-size: .92rem; color: #D9C79A; padding-top: .3rem;
}
.cta-form.is-sent .form-success { display: block; }
.cta-form.is-sent .form-row, .cta-form.is-sent button[type="submit"], .cta-form.is-sent .form-note { display: none; }

.contact-map {
  height: 220px;
  border-radius: 12px;
  overflow: clip;
  border: 1px solid rgba(250,250,250,0.18);
}
.map-hint { font-size: .78rem; color: rgba(250,250,250,0.5); }

/* =============================================================
   13. Footer
   ============================================================= */
.site-footer { background: var(--bg-2); border-top: 1px solid var(--line); padding-top: clamp(3rem, 6vw, 5rem); }
.footer-inner {
  display: grid; gap: 2.5rem; grid-template-columns: 1fr;
  padding-bottom: 3rem;
}
@media (min-width: 720px) { .footer-inner { grid-template-columns: 1.6fr repeat(3, 1fr); } }
.footer-brand p { color: var(--ink-mute); font-size: .9rem; margin-block: 1rem 1.2rem; max-width: 32ch; }
.footer-social { display: flex; gap: .8rem; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  transition: border-color .3s var(--ease-out), color .3s var(--ease-out);
}
.footer-social a svg { width: 16px; height: 16px; }
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }
.footer-col { display: flex; flex-direction: column; gap: .7rem; }
.footer-col h4 { font-family: var(--sans); font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-mute); font-weight: 600; margin-bottom: .3rem; }
.footer-col a, .footer-col span { font-size: .92rem; color: var(--ink-soft); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-block: 1.4rem;
  font-size: .82rem; color: var(--ink-mute);
}

/* =============================================================
   14. Responsive — nav
   ============================================================= */
@media (max-width: 959px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed; inset: 84px 0 0 0; z-index: 90;
    background: var(--bg);
    flex-direction: column; align-items: flex-start; justify-content: flex-start;
    padding: 2rem var(--gutter);
    gap: 1.4rem;
    transform: translateY(-12px);
    opacity: 0; pointer-events: none;
    transition: opacity .35s var(--ease-out), transform .35s var(--ease-out);
  }
  .site-nav.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .site-nav a:not(.btn) { font-size: 1.1rem; }
  .site-nav .btn { margin-top: .5rem; }
}

/* =============================================================
   15. Reduced motion — only intrusive effects
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .hero-grain { animation: none; }
}

/* =============================================================
   16. Chat widget
   ============================================================= */
.chat-widget {
  position: fixed; right: clamp(1rem, 3vw, 1.75rem); bottom: clamp(1rem, 3vw, 1.75rem);
  z-index: 300;
}

.whatsapp-btn {
  position: fixed; left: clamp(1rem, 3vw, 1.75rem); bottom: clamp(1rem, 3vw, 1.75rem);
  z-index: 300;
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--ink); color: #25D366;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 28px -8px rgba(23,23,23,0.45);
  transition: transform .35s var(--ease-out);
}
.whatsapp-btn:hover { transform: scale(1.05); }
.whatsapp-btn svg { width: 28px; height: 28px; }

.chat-toggle {
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--ink); color: var(--cream);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 28px -8px rgba(23,23,23,0.45);
  transition: transform .35s var(--ease-out), background .35s var(--ease-out);
}
.chat-toggle:hover { background: var(--accent); transform: scale(1.05); }
.chat-toggle svg { width: 24px; height: 24px; position: absolute; transition: opacity .2s var(--ease-out), transform .2s var(--ease-out); }
.chat-toggle-icon-close { opacity: 0; transform: rotate(-90deg) scale(.6); }
.chat-widget.is-open .chat-toggle-icon-open { opacity: 0; transform: rotate(90deg) scale(.6); }
.chat-widget.is-open .chat-toggle-icon-close { opacity: 1; transform: rotate(0) scale(1); }

.chat-window {
  position: absolute; right: 0; bottom: calc(100% + 1rem);
  width: min(360px, calc(100vw - 2rem));
  height: min(520px, calc(100vh - 8rem));
  background: var(--paper);
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: 0 32px 64px -16px rgba(23,23,23,0.28);
  display: flex; flex-direction: column;
  overflow: clip;
  opacity: 0; transform: translateY(16px) scale(.98);
  pointer-events: none;
  transition: opacity .3s var(--ease-out), transform .3s var(--ease-out);
}
.chat-widget.is-open .chat-window { opacity: 1; transform: none; pointer-events: auto; }

.chat-header {
  background: var(--ink); color: var(--cream);
  padding: 1rem 1.1rem;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--serif); font-size: 1.05rem; font-weight: 600;
  flex: 0 0 auto;
}
.chat-header-close { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; color: rgba(250,250,250,0.7); }
.chat-header-close:hover { color: var(--cream); }
.chat-header-close svg { width: 18px; height: 18px; }

.chat-messages {
  flex: 1 1 auto; overflow-y: auto; overflow-x: clip;
  padding: 1.1rem;
  display: flex; flex-direction: column; gap: .7rem;
  background: var(--bg);
}
.chat-msg {
  max-width: 84%;
  padding: .65rem .9rem;
  border-radius: 14px;
  font-size: .9rem; line-height: 1.45;
  white-space: pre-wrap;
}
.chat-msg-assistant {
  align-self: flex-start;
  background: var(--bg-2);
  color: var(--ink-soft);
  border-bottom-left-radius: 4px;
}
.chat-msg-user {
  align-self: flex-end;
  background: var(--ink);
  color: var(--cream);
  border-bottom-right-radius: 4px;
}
.chat-msg-error {
  align-self: center;
  background: transparent;
  color: var(--ink-mute);
  font-size: .8rem;
  font-style: italic;
}
.chat-msg-assistant.is-typing::after {
  content: "…";
  animation: chatTyping 1.1s steps(3, end) infinite;
}
@keyframes chatTyping {
  0% { content: ""; }
  33% { content: "."; }
  66% { content: ".."; }
  100% { content: "..."; }
}

.chat-input-row {
  flex: 0 0 auto;
  display: flex; gap: .6rem;
  padding: .8rem;
  border-top: 1px solid var(--line);
  background: var(--paper);
}
.chat-input {
  flex: 1 1 auto; min-width: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .6rem 1rem;
  font-family: var(--sans); font-size: .9rem;
  color: var(--ink-soft); background: var(--bg);
  transition: border-color .3s var(--ease-out);
}
.chat-input:focus { border-color: var(--accent); outline: none; }

@media (max-width: 539px) {
  .chat-window {
    position: fixed; right: 1rem; left: 1rem; bottom: 5.5rem; width: auto;
    height: min(70svh, calc(100svh - 7rem));
  }
}

@media (prefers-reduced-motion: reduce) {
  .chat-msg-assistant.is-typing::after { animation: none; content: "..."; }
}