/* ==========================================================================
   KERNING PUBLICIDAD — Landing Page
   Design tokens
   ========================================================================== */
:root{
  --ink:        #0a0a0a;
  --ink-soft:   #171514;
  --ink-line:   #2c2725;
  --paper:      #ffffff;
  --paper-soft: #f4f2ef;
  --paper-line: #e4e0da;
  --crimson:       #a53234;
  --crimson-bright:#c23b3e;
  --crimson-deep:  #6e1f21;
  --graphite:   #4a4744;
  --mist:       #8a8681;

  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  --container: 1180px;
  --radius: 2px;
  --ease: cubic-bezier(.16,.8,.28,1);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *,*::before,*::after{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; cursor:pointer; }
ul{ list-style:none; margin:0; padding:0; }

.wrap{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

:focus-visible{
  outline: 2px solid var(--crimson-bright);
  outline-offset: 3px;
}

/* ---------- type helpers ---------- */
.eyebrow{
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--crimson);
  display:flex; align-items:center; gap:10px;
  margin: 0 0 18px;
}
.eyebrow::before{
  content:"";
  width: 26px; height: 1px;
  background: var(--crimson);
  display:inline-block;
}
.eyebrow.on-dark{ color:#e7a9a8; }

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  margin: 0;
  letter-spacing: -0.01em;
}
h2{ font-size: clamp(1.9rem, 4vw, 2.9rem); }
h3{ font-size: 1.3rem; }

p{ color: var(--graphite); }
.lede{ font-size: 1.1rem; max-width: 46ch; }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(10,10,10,.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ink-line);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height: 76px;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand img{ height: 32px; width:auto; }
.main-nav{ display:flex; align-items:center; gap:34px; }
.main-nav ul{ display:flex; gap:30px; }
.main-nav a{
  color:#efece8;
  font-size:.92rem;
  font-weight:500;
  position:relative;
  padding: 6px 0;
}
.main-nav a::after{
  content:""; position:absolute; left:0; bottom:0; height:1px; width:0;
  background: var(--crimson-bright);
  transition: width .25s var(--ease);
}
.main-nav a:hover::after{ width:100%; }

.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family: var(--font-mono);
  font-size:.82rem; letter-spacing:.04em; text-transform:uppercase;
  font-weight:500;
  padding: 13px 22px;
  border-radius: var(--radius);
  border:1px solid transparent;
  transition: transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.btn:hover{ transform: translateY(-2px); }
.btn-primary{ background: var(--crimson); color:#fff; }
.btn-primary:hover{ background: var(--crimson-bright); }
.btn-ghost-dark{ border-color: rgba(255,255,255,.28); color:#fff; }
.btn-ghost-dark:hover{ border-color:#fff; }
.btn-ghost-light{ border-color: var(--ink); color: var(--ink); }
.btn-ghost-light:hover{ background: var(--ink); color:#fff; }
.btn-lg{ padding: 17px 30px; font-size:.88rem; }
.btn svg{ width:16px; height:16px; }

.nav-toggle{
  display:none;
  width: 40px; height:40px;
  background:none; border:none;
  flex-direction:column; justify-content:center; align-items:center; gap:5px;
}
.nav-toggle span{ width:22px; height:2px; background:#fff; display:block; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  background: var(--ink);
  color:#fff;
  padding: 92px 0 60px;
  position:relative;
  overflow:hidden;
  border-bottom: 1px solid var(--ink-line);
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0 1px, transparent 1px 120px);
  pointer-events:none;
}
.hero .wrap{ position:relative; }
.hero h1{
  color:#fff;
  font-size: clamp(2.1rem, 5.2vw, 4.1rem);
  max-width: 15ch;
}
.hero-sub{
  margin-top: 22px;
  color:#c9c5c0;
  font-size: 1.12rem;
  max-width: 50ch;
}
.hero-ctas{ display:flex; gap:16px; margin-top: 34px; flex-wrap:wrap; }

/* --- kerning interactive demo --- */
.kerning-demo{
  margin-top: 68px;
  border-top: 1px solid var(--ink-line);
  padding-top: 40px;
  display:grid;
  grid-template-columns: 1fr;
  gap: 26px;
}
.kerning-demo-label{
  font-family: var(--font-mono);
  font-size:.78rem;
  color:#8a8681;
  letter-spacing:.1em;
  text-transform:uppercase;
  max-width: 60ch;
}
.kerning-demo-label strong{ color:#e7e4e0; font-weight:500; }
.kerning-stage{
  display:flex; align-items:baseline; justify-content:space-between; flex-wrap:wrap; gap:20px;
}
#kerningWord{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 8vw, 5.6rem);
  color: var(--crimson-bright);
  white-space: nowrap;
  transition: letter-spacing .05s linear;
}
.kerning-controls{
  display:flex; align-items:center; gap:16px;
  font-family: var(--font-mono);
  color:#8a8681; font-size:.85rem;
  min-width: 260px;
}
#kerningRange{
  -webkit-appearance:none; appearance:none;
  width: 220px; height: 2px;
  background: var(--ink-line);
  outline:none;
}
#kerningRange::-webkit-slider-thumb{
  -webkit-appearance:none;
  width:16px; height:16px; border-radius:50%;
  background: var(--crimson-bright);
  border: 3px solid var(--ink);
  box-shadow: 0 0 0 1px var(--crimson-bright);
  cursor:grab;
}
#kerningRange::-moz-range-thumb{
  width:16px; height:16px; border-radius:50%;
  background: var(--crimson-bright);
  border: 3px solid var(--ink);
  cursor:grab;
}
#kerningValue{ color:#efece8; width:56px; display:inline-block; }

/* ==========================================================================
   TICKER
   ========================================================================== */
.ticker{
  background: var(--crimson);
  color:#fff;
  overflow:hidden;
  border-bottom: 1px solid var(--crimson-deep);
}
.ticker-track{
  display:flex;
  width: max-content;
  animation: scroll-left 32s linear infinite;
}
.ticker-track span{
  font-family: var(--font-mono);
  font-size:.82rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  padding: 13px 0;
  white-space:nowrap;
}
.ticker-track span::after{ content:"—"; margin: 0 22px; opacity:.6; }
@keyframes scroll-left{
  from{ transform: translateX(0); }
  to{ transform: translateX(-50%); }
}

/* ==========================================================================
   SECTION SHELL
   ========================================================================== */
section{ padding: 100px 0; }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end; gap:30px;
  margin-bottom: 56px; flex-wrap:wrap;
}
.section-head p{ max-width: 44ch; }

.on-paper-soft{ background: var(--paper-soft); }
.on-ink{ background: var(--ink); color:#fff; }
.on-ink p{ color:#b9b5b0; }
.on-ink h2{ color:#fff; }

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--paper-line);
  border: 1px solid var(--paper-line);
}
.service-card{
  background: var(--paper);
  padding: 38px 32px;
  display:flex; flex-direction:column; gap:18px;
  transition: background .25s var(--ease);
  position:relative;
}
.service-card:hover{ background: var(--paper-soft); }
.service-icon{
  width: 44px; height:44px;
  color: var(--crimson);
}
.service-icon svg{ width:100%; height:100%; }
.service-card h3{ letter-spacing:-.01em; }
.service-card p{ font-size:.95rem; margin:0; }
.service-tag{
  font-family: var(--font-mono);
  font-size:.72rem;
  color: var(--mist);
  letter-spacing:.08em;
  text-transform:uppercase;
}
.service-link{
  margin-top:auto;
  font-family: var(--font-mono);
  font-size:.78rem;
  letter-spacing:.04em;
  color: var(--ink);
  display:inline-flex; align-items:center; gap:8px;
  padding-top: 8px;
  border-top: 1px solid var(--paper-line);
}
.service-link svg{ width:13px; height:13px; transition: transform .2s var(--ease); }
.service-card:hover .service-link svg{ transform: translateX(3px); }

/* ==========================================================================
   PROCESS
   ========================================================================== */
.process-list{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.process-step{
  border-top: 2px solid var(--ink-line);
  padding-top: 22px;
}
.process-num{
  font-family: var(--font-mono);
  color: var(--crimson-bright);
  font-size:.85rem;
  display:block;
  margin-bottom: 14px;
}
.process-step h3{ color:#fff; font-size:1.1rem; margin-bottom:10px; }
.process-step p{ font-size:.92rem; }

/* ==========================================================================
   PORTFOLIO / MARCAS
   ========================================================================== */
.brands-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.brand-card{
  border: 1px solid var(--paper-line);
  padding: 32px;
  display:flex; flex-direction:column; gap:14px;
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.brand-card:hover{ border-color: var(--crimson); transform: translateY(-4px); }
.brand-kicker{
  font-family: var(--font-mono);
  font-size:.72rem;
  color: var(--crimson);
  letter-spacing:.1em;
  text-transform:uppercase;
}
.brand-card h3{ font-size:1.35rem; }
.brand-card p{ font-size:.92rem; margin:0; }
.brand-visit{
  margin-top:auto;
  font-family: var(--font-mono);
  font-size:.78rem;
  display:inline-flex; align-items:center; gap:8px;
}
.brand-visit svg{ width:13px; height:13px; }

/* ==========================================================================
   CTA BANNER
   ========================================================================== */
.cta-banner{
  background: var(--crimson);
  color:#fff;
  text-align:center;
  padding: 90px 0;
}
.cta-banner h2{ color:#fff; max-width: 20ch; margin:0 auto; }
.cta-banner p{ color: #f6dede; margin: 20px auto 34px; max-width: 42ch; }
.cta-banner .btn-primary{ background:#fff; color: var(--crimson-deep); }
.cta-banner .btn-primary:hover{ background: var(--ink); color:#fff; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{
  background: var(--ink);
  color:#c9c5c0;
  padding: 70px 0 30px;
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid var(--ink-line);
}
.footer-brand img{ height:30px; margin-bottom:16px; }
.footer-brand p{ color:#8a8681; font-size:.9rem; max-width:32ch; }
.footer-col h4{
  font-family: var(--font-mono);
  font-size:.74rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:#fff;
  margin-bottom:18px;
  font-weight:500;
}
.footer-col ul{ display:flex; flex-direction:column; gap:11px; }
.footer-col a{ font-size:.9rem; color:#c9c5c0; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  padding-top: 26px; flex-wrap:wrap; gap:12px;
  font-size:.8rem; color:#6f6b67;
  font-family: var(--font-mono);
}

/* ==========================================================================
   WHATSAPP FLOAT
   ========================================================================== */
.wa-float{
  position: fixed; right: 22px; bottom: 22px; z-index: 200;
  background: var(--crimson);
  color:#fff;
  width: 56px; height:56px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
  transition: transform .2s var(--ease), background .2s var(--ease);
}
.wa-float:hover{ transform: scale(1.07); background: var(--crimson-bright); }
.wa-float svg{ width:26px; height:26px; }

/* ==========================================================================
   SCROLL REVEAL
   ========================================================================== */
.reveal{ opacity:0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible{ opacity:1; transform:none; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 980px){
  .services-grid{ grid-template-columns: repeat(2,1fr); }
  .process-list{ grid-template-columns: repeat(2,1fr); gap:36px; }
  .footer-grid{ grid-template-columns: 1fr 1fr; gap:36px; }
  .brands-grid{ grid-template-columns: 1fr; }
}
@media (max-width: 760px){
  .main-nav{
    position:fixed; inset: 76px 0 0 0;
    background: var(--ink);
    flex-direction:column; align-items:flex-start;
    padding: 30px 28px;
    gap: 26px;
    transform: translateY(-8px);
    opacity:0; visibility:hidden;
    transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
  }
  .main-nav.is-open{ opacity:1; visibility:visible; transform:none; }
  .main-nav ul{ flex-direction:column; gap:20px; }
  .nav-toggle{ display:flex; }
  section{ padding: 70px 0; }
  .services-grid{ grid-template-columns: 1fr; }
  .process-list{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .kerning-stage{ flex-direction:column; align-items:flex-start; }
  .section-head{ flex-direction:column; align-items:flex-start; }
}