/* ============ TOKENS ============ */
:root {
  --bg: #FAF8F5;
  --navy: #1B365D;
  --navy-deep: #142946;
  --rose: #C4808E;
  --rose-dark: #8F5260;
  --pink-pale: #F2E4E1;
  --text: #2A3B54;
  --muted: #5A6B84;
  --line: rgba(27, 54, 93, .18);
  --font-display: "Bodoni Moda", Didot, serif;
  --font-body: "Inter", system-ui, sans-serif;
  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-pad: clamp(4rem, 10vw, 8rem);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --paper: #ffffff;
  --footer-text: #cbd5e3;
  --footer-muted: #8195ad;
}

/* ============ RESET / BASE ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--navy); text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; color: var(--navy); line-height: 1.12; }
h1 { font-size: clamp(2.5rem, 6vw, 5.5rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.9rem, 4vw, 3.25rem); }
h3 { font-size: clamp(1.3rem, 2.2vw, 1.75rem); }
em { font-style: italic; color: var(--rose-dark); }
.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
section { padding-block: var(--section-pad); }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--navy); color: var(--paper); padding: .6rem 1rem; z-index: 200;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--rose-dark); outline-offset: 2px; }

/* ============ MICRO-TIPOGRAFÍA ============ */
.eyebrow {
  font-size: .6875rem; font-weight: 600; letter-spacing: .18em;
  text-transform: uppercase; color: var(--rose-dark); margin-bottom: 1.1rem;
}
.section-num { font-family: var(--font-display); color: var(--rose-dark); font-size: 1.1rem; }
.lead { font-size: clamp(1.1rem, 1.6vw, 1.3rem); color: var(--muted); max-width: 34em; }

/* ============ BOTONES ============ */
.btn {
  display: inline-block; padding: 1rem 2.2rem;
  font-size: .8125rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  border: 1px solid var(--navy); transition: background-color .3s var(--ease), border-color .3s var(--ease), color .3s var(--ease); cursor: pointer;
  background: transparent; font-family: var(--font-body);
}
.btn-primary { background: var(--navy); color: var(--paper); }
.btn-primary:hover { background: var(--rose-dark); border-color: var(--rose-dark); }
.btn-ghost { color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: var(--paper); }
.btn-light { border-color: var(--paper); color: var(--paper); }
.btn-light:hover { background: var(--paper); color: var(--navy); }
.arrow-link {
  font-size: .8125rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  border-bottom: 1px solid var(--rose); padding-bottom: .3rem;
}
.arrow-link::after { content: " →"; color: var(--rose-dark); }
.arrow-link:hover { color: var(--rose-dark); }

/* ============ HEADER ============ */
.site-header {
  position: fixed; inset-inline: 0; top: 0; z-index: 100;
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.scrolled { background: rgba(250, 248, 245, .95); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); box-shadow: 0 1px 0 var(--line); }
.site-header.on-dark:not(.scrolled) .logo,
.site-header.on-dark:not(.scrolled) .site-nav a { color: var(--paper); }
.site-header.on-dark:not(.scrolled) .site-nav a:hover { color: var(--rose); }
.site-header.on-dark:not(.scrolled) .site-nav .nav-cta { border-color: var(--paper); }
.site-header.on-dark:not(.scrolled) .nav-toggle span { background: var(--paper); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { font-family: var(--font-display); font-size: 1.45rem; font-weight: 700; color: var(--navy); }
.logo-dot { color: var(--rose); }
.logo-img { height: 44px; width: auto; display: block; }
.site-header.on-dark:not(.scrolled) .logo-img { filter: brightness(0) invert(1); }
.site-nav { display: flex; gap: 2.2rem; align-items: center; }
.site-nav a {
  font-size: .75rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--navy); transition: color .2s;
}
.site-nav a:hover, .site-nav a.active { color: var(--rose-dark); }
.site-nav .nav-cta { border: 1px solid var(--navy); padding: .6rem 1.3rem; }
.site-nav .nav-cta:hover { background: var(--navy); color: var(--paper); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: .5rem; }
.nav-toggle span { display: block; width: 26px; height: 2px; background: var(--navy); margin: 6px 0; transition: transform .3s var(--ease); }

/* ============ FOOTER ============ */
.site-footer { background: var(--navy-deep); color: var(--footer-text); padding-block: 4rem 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer-logo { color: var(--paper); font-size: 1.3rem; }
.footer-tag { font-size: .9rem; margin-top: .8rem; }
.footer-nav, .footer-contact { display: flex; flex-direction: column; gap: .7rem; }
.footer-nav a, .footer-contact a { color: var(--footer-text); font-size: .9rem; }
.footer-nav a:hover, .footer-contact a:hover { color: var(--rose); }
.footer-legal { padding-top: 2rem; font-size: .8rem; color: var(--footer-muted); }

/* ============ REVEAL ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============ PLACEHOLDER VISUAL ============ */
.ph-visual { position: relative; overflow: hidden; }
.ph-visual svg { width: 100%; height: 100%; object-fit: cover; }
.ph-label {
  position: absolute; left: 1.2rem; bottom: 1rem;
  font-size: .6875rem; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.85);
}

/* ============ RESPONSIVE NAV ============ */
@media (max-width: 900px) {
  .nav-toggle { display: block; z-index: 110; }
  .site-nav {
    position: fixed; inset: 0; background: var(--bg);
    flex-direction: column; justify-content: center; text-align: center; gap: 2rem;
    transform: translateX(100%); transition: transform .35s var(--ease);
  }
  .site-nav.open { transform: none; }
  .site-nav a { font-size: 1rem; }
  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(8px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-8px) rotate(-45deg); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .site-header.on-dark .site-nav.open a { color: var(--navy); }
  .site-header.on-dark .site-nav.open .nav-cta { border-color: var(--navy); }
  .site-header.on-dark:not(.scrolled) .nav-toggle[aria-expanded="true"] span { background: var(--navy); }
}

/* ============ HERO ============ */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; padding-block: 0; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: -1; }
.hero-bg svg { width: 100%; height: 100%; }
.hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(rgba(20,41,70,.72), rgba(20,41,70,.45)); }
.hero-content { padding-top: 76px; }
.hero h1 { color: var(--paper); }
.hero h1 em { color: var(--pink-pale); }
.hero-eyebrow { color: var(--rose); }
.hero-lead { color: #e7edf5; margin-top: 1.4rem; }
.hero-actions { display: flex; gap: 2rem; align-items: center; margin-top: 2.6rem; flex-wrap: wrap; }
.arrow-light { color: var(--paper); border-color: rgba(255,255,255,.5); }
.arrow-light::after { color: var(--rose); }

/* ============ STATS ============ */
.stats { background: var(--pink-pale); padding-block: clamp(3rem, 6vw, 4.5rem); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; text-align: center; }
.stat-num { font-family: var(--font-display); font-size: clamp(2.4rem, 4.5vw, 3.6rem); font-weight: 700; color: var(--navy); }
.stat-label { font-size: .85rem; color: var(--muted); max-width: 16em; margin-inline: auto; }

/* ============ INTRO / SPLIT ============ */
.split { display: grid; grid-template-columns: 5fr 6fr; gap: clamp(2rem, 6vw, 5rem); align-items: center; }
.split .ph-visual { aspect-ratio: 4 / 5; }
.split p + p { margin-top: 1rem; }
.split .arrow-link { display: inline-block; margin-top: 2rem; }
.split h2 { margin-bottom: 1.5rem; }

/* ============ SERVICES ============ */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3.5rem; }
.service-card { border-top: 1px solid var(--line); padding-top: 1.8rem; }
.service-num { font-family: var(--font-display); font-size: 1.15rem; color: var(--rose-dark); }
.service-card h3 { margin: .8rem 0 1rem; }
.service-card p { font-size: .95rem; color: var(--muted); margin-bottom: 1.6rem; }

/* ============ CASE STUDY ============ */
.case-study { background: var(--paper); }
.case-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; margin-block: 3rem; }
.case-step h3 { font-size: 1.05rem; font-family: var(--font-body); font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--rose-dark); margin-bottom: .6rem; }
.case-step p { font-size: .92rem; color: var(--muted); }

/* ============ BA SLIDER ============ */
.ba-slider { position: relative; aspect-ratio: 16 / 9; overflow: hidden; max-width: 900px; margin-inline: auto; }
.ba-pane { position: absolute; inset: 0; }
.ba-pane svg { width: 100%; height: 100%; }
.ba-after { clip-path: inset(0 0 0 var(--pos, 50%)); }
.ba-handle { position: absolute; top: 0; bottom: 0; left: var(--pos, 50%); width: 2px; background: var(--paper); box-shadow: 0 0 0 1px rgba(0,0,0,.15); pointer-events: none; }
.ba-handle::after {
  content: "↔"; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 44px; height: 44px; border-radius: 50%; background: var(--paper); color: var(--navy);
  display: grid; place-items: center; font-size: 1.1rem;
}
.ba-range { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: ew-resize; }

/* ============ TESTIMONIALS ============ */
.testimonials { background: var(--pink-pale); }
.quotes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-top: 3rem; }
.quote { border-left: 2px solid var(--rose); padding-left: 1.8rem; }
.quote p { font-family: var(--font-display); font-size: clamp(1.15rem, 1.8vw, 1.45rem); font-style: italic; color: var(--navy); line-height: 1.5; }
.quote cite { display: block; margin-top: 1.2rem; font-style: normal; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }

/* ============ CTA FINAL ============ */
.cta-final { background: var(--navy); text-align: center; }
.cta-final h2 { color: var(--paper); }
.cta-final p { color: var(--footer-text); margin: 1.4rem auto 2.4rem; max-width: 32em; }

@media (max-width: 900px) {
  .stats-grid, .case-steps { grid-template-columns: repeat(2, 1fr); }
  .split, .services-grid, .quotes-grid { grid-template-columns: 1fr; }
  .hero-actions { gap: 1.2rem; }
}

/* ============ PAGE HERO ============ */
.page-hero { padding-top: calc(76px + clamp(3rem, 8vw, 6rem)); padding-bottom: clamp(2.5rem, 6vw, 4rem); }
.page-title { font-size: clamp(2.1rem, 4.5vw, 3.6rem); }
.page-hero .lead { margin-top: 1.4rem; }

/* ============ METHOD ============ */
.method { background: var(--paper); }
.method-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2.5rem; margin-top: 3.5rem; }
.method-step { border-top: 1px solid var(--line); padding-top: 1.6rem; }
.method-num { font-family: var(--font-display); color: var(--rose-dark); font-size: 1.2rem; }
.method-step h3 { margin: .7rem 0 .8rem; font-size: 1.25rem; }
.method-step p { font-size: .92rem; color: var(--muted); }

/* ============ AUDIENCE ============ */
.audience { background: var(--pink-pale); }
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3rem; }
.audience-card { background: var(--bg); padding: 2.2rem; }
.audience-card h3 { margin-bottom: .8rem; }
.audience-card p { font-size: .95rem; color: var(--muted); }

@media (max-width: 900px) {
  .method-grid { grid-template-columns: repeat(2, 1fr); }
  .audience-grid { grid-template-columns: 1fr; }
}

/* ============ FILTERS ============ */
.filters { display: flex; gap: .8rem; flex-wrap: wrap; margin-bottom: 3rem; }
.filter-btn {
  font-family: var(--font-body); font-size: .75rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  background: none; border: 1px solid var(--line); color: var(--muted); padding: .6rem 1.4rem; cursor: pointer;
  transition: background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.filter-btn:hover { border-color: var(--navy); color: var(--navy); }
.filter-btn.active { background: var(--navy); border-color: var(--navy); color: var(--paper); }

/* ============ PROJECTS ============ */
.portfolio-list { padding-top: 0; }
.projects-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
.project-card { background: var(--paper); transition: opacity .3s var(--ease); }
.project-card.hidden { display: none; }
.project-card .ph-visual { aspect-ratio: 4 / 3; }
.card-body { padding: 1.8rem; }
.card-tag { font-size: .7rem; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; color: var(--rose-dark); margin-bottom: .5rem; }
.card-metric { font-family: var(--font-display); font-style: italic; color: var(--navy); margin-top: .4rem; }
.card-toggle {
  margin-top: 1.2rem; background: none; border: 0; border-bottom: 1px solid var(--rose);
  font-family: var(--font-body); font-size: .78rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--navy); padding: 0 0 .3rem; cursor: pointer;
}
.card-toggle:hover { color: var(--rose-dark); }
.card-detail { display: none; margin-top: 1.4rem; border-top: 1px solid var(--line); padding-top: 1.4rem; }
.card-detail p { font-size: .92rem; color: var(--muted); margin-bottom: .7rem; }
.card-detail strong { color: var(--navy); }
.project-card.expanded .card-detail { display: block; }

@media (max-width: 900px) {
  .projects-grid { grid-template-columns: 1fr; }
}

/* ============ SERVICE BLOCKS ============ */
.service-blocks { padding-top: 0; }
.service-block { display: grid; grid-template-columns: 6fr 5fr; gap: clamp(2rem, 6vw, 5rem); align-items: center; padding-block: clamp(3rem, 7vw, 5rem); border-top: 1px solid var(--line); }
.service-block:first-of-type { border-top: 0; }
.service-block.reverse .sb-visual { order: -1; }
.sb-visual .ph-visual { aspect-ratio: 4 / 3; }
.service-block h2 { margin: .6rem 0 1.2rem; }
.sb-list { list-style: none; padding: 0; margin: 1.4rem 0; }
.sb-list li { padding-left: 1.4rem; position: relative; font-size: .95rem; color: var(--muted); margin-bottom: .5rem; }
.sb-list li::before { content: "—"; position: absolute; left: 0; color: var(--rose); }
.sb-meta { font-size: .92rem; margin-top: .8rem; }
.sb-meta strong { color: var(--navy); }
.service-block .arrow-link { display: inline-block; margin-top: 1.8rem; }

@media (max-width: 900px) {
  .service-block { grid-template-columns: 1fr; }
  .service-block.reverse .sb-visual { order: 0; }
}

/* ============ BLOG / COMING SOON ============ */
.coming-soon { background: var(--paper); text-align: center; }
.coming-soon p { max-width: 34em; margin: 1.4rem auto 2.4rem; color: var(--muted); }
.newsletter-form { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.newsletter-form .field-group { margin: 0; }
.newsletter-form input[type="email"] { min-width: 280px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.hp-field { position: absolute; left: -9999px; }

/* ============ FORMS ============ */
.field-group { margin-bottom: 1.4rem; }
.field-group label { display: block; font-size: .78rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--navy); margin-bottom: .5rem; }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  width: 100%; padding: .9rem 1rem; font-family: var(--font-body); font-size: 1rem; color: var(--text);
  background: var(--paper); border: 1px solid var(--line); transition: border-color .2s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--navy); }
.field-error { border-color: #c0392b !important; }
.error-msg { color: #c0392b; font-size: .8rem; margin-top: .4rem; }

/* ============ CONTACT ============ */
.contact { padding-top: 0; }
.contact-grid { display: grid; grid-template-columns: 6fr 5fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
.contact-grid > * { min-width: 0; }
.contact-aside { background: var(--pink-pale); padding: 2.2rem; }
.contact-aside .aside-title { font-size: 1.35rem; margin-bottom: .6rem; }
.contact-aside > p { font-size: .95rem; color: var(--muted); margin-bottom: 1.6rem; }
.calendly-box { background: var(--paper); overflow: hidden; }
.contact-direct { margin-top: 1.8rem; font-size: .95rem; }
.contact-direct p { margin-bottom: .4rem; }

@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ============ WHATSAPP FLOAT ============ */
.whatsapp-float {
  position: fixed; right: 1.4rem; bottom: 1.4rem; z-index: 95;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .22);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.whatsapp-float:hover { transform: scale(1.08); box-shadow: 0 6px 20px rgba(0, 0, 0, .28); }
@media (max-width: 900px) {
  .whatsapp-float { right: 1rem; bottom: 1rem; }
}