/* NEXO Ortodoncia Digital — sistema visual base */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --black: #111110;
  --near-black: #1a1a18;
  --white: #ffffff;
  --paper: #f7f6f3;
  --paper-2: #efeee9;
  --line: #dedcd4;
  --gray: #6f6d66;
  --gray-light: #9c9a92;
  --accent: #111110;

  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container: 1180px;
  --radius: 2px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--near-black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4{ font-family: var(--font-display); margin: 0; font-weight: 600; letter-spacing: -0.01em; }
p{ margin: 0; }

.container{
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Eyebrow / labels ---------- */
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
}
.eyebrow::before{
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1.5px solid var(--near-black);
  background: transparent;
}

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .container{
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 104px;
}
.brand img{ height: 58px; width: auto; }

.nav-links{
  display: flex;
  align-items: center;
  gap: 36px;
}
@media (min-width: 921px){
  .nav-links{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    gap: 28px;
  }
}
.nav-links a{
  font-size: 14px;
  font-weight: 500;
  color: var(--near-black);
  position: relative;
  padding: 6px 0;
}
.nav-links a::after{
  content:'';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--near-black);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after{ transform: scaleX(1); }
.nav-links a.active{ font-weight: 600; }

.header-actions{ display: flex; align-items: center; gap: 12px; }

.nav-toggle{
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--near-black);
  background: transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:'';
  display:block;
  width: 18px; height: 1.5px;
  background: var(--near-black);
  position: relative;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  padding: 14px 26px;
  border: 1px solid var(--near-black);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background .2s ease, color .2s ease, transform .15s ease;
  white-space: nowrap;
}
.btn-primary{ background: var(--near-black); color: var(--white); }
.btn-primary:hover{ background: #000; transform: translateY(-1px); }
.btn-ghost{ background: transparent; color: var(--near-black); }
.btn-ghost:hover{ background: var(--near-black); color: var(--white); }
.btn-sm{ padding: 10px 18px; font-size: 13px; }
.btn-arrow::after{ content: '\2192'; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  overflow: hidden;
  padding: 90px 0 80px;
  background: var(--white);
}
.hero .pattern{
  position: absolute;
  top: -40px; right: -120px;
  width: 720px;
  max-width: none;
  opacity: 0.9;
  pointer-events: none;
  color: var(--line);
}
.hero .pattern circle{ color: var(--near-black); }
.hero-dark .pattern{ color: #34332f; }
.hero-dark .pattern circle{ color: var(--gray-light); }
.pattern-flip{ transform: scaleX(-1); }
.obj-low{ object-position: center 82%; }
.hero-inner{
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.hero h1{
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.08;
  margin: 18px 0 22px;
}
.hero .lede{
  font-size: 18px;
  color: var(--gray);
  max-width: 560px;
  margin-bottom: 28px;
}
.hero-stats{
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 28px 0 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.hero-stats span{
  font-size: 13px;
  font-weight: 600;
  color: var(--near-black);
}
.hero-ctas{ display: flex; flex-wrap: wrap; gap: 14px; }

.hero-dark{
  background: var(--near-black);
  color: var(--white);
}
.hero-dark .eyebrow{ color: var(--gray-light); }
.hero-dark .eyebrow::before{ border-color: var(--white); }
.hero-dark .lede{ color: #c9c7bf; }
.hero-dark .hero-stats{ border-color: #34332f; }
.hero-dark .hero-stats span{ color: var(--white); }
.hero-dark .btn-primary{ background: var(--white); color: var(--near-black); border-color: var(--white); }
.hero-dark .btn-primary:hover{ background: #eceae3; }
.hero-dark .btn-ghost{ border-color: #4a4944; color: var(--white); }
.hero-dark .btn-ghost:hover{ background: var(--white); color: var(--near-black); border-color: var(--white); }

.hero-brand-bg{ position: relative; }
.hero-brand-bg::before{
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../assets/pattern-nexo.webp');
  background-repeat: no-repeat;
  background-position: right -140px top -120px;
  background-size: 1000px auto;
  opacity: 0.6;
  pointer-events: none;
  z-index: 1;
}
.hero-brand-bg .container{ position: relative; z-index: 2; }
@media (max-width: 1080px){
  .hero-brand-bg::before{ background-position: right -420px top -100px; background-size: 760px auto; opacity: 0.4; }
}
@media (max-width: 560px){
  .hero-brand-bg::before{ background-position: right -480px top -40px; background-size: 560px auto; opacity: 0.35; }
}

/* ---------- Hero with photo ---------- */
.hero-split{ overflow: visible; }
.hero-split .container{
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero-split .hero-inner{ max-width: none; }
.hero-photo{
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border: 1px solid var(--line);
}
.hero-photo img{
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-dark .hero-photo{ border-color: #34332f; }
.hero-photo::after{
  content:'';
  position:absolute; inset:0;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.04);
}
.hero-photo .tag{
  position: absolute;
  left: 18px; bottom: 18px;
  background: var(--white);
  color: var(--near-black);
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 8px 14px;
  border: 1px solid var(--near-black);
}

.photo-inline{
  border: 1px solid var(--line);
  overflow: hidden;
}
.photo-inline img{
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.split-photo{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split-photo .photo-inline{ aspect-ratio: 4/3; }

/* ---------- Sections ---------- */
section{ padding: 88px 0; }
.section-tight{ padding: 64px 0; }
.section-alt{ background: var(--paper); }
.section-dark{ background: var(--near-black); color: var(--white); }
.section-dark .eyebrow{ color: var(--gray-light); }
.section-dark .eyebrow::before{ border-color: var(--white); }

.section-head{
  max-width: 640px;
  margin-bottom: 48px;
}
.section-head h2{
  font-size: clamp(26px, 3.4vw, 38px);
  margin-top: 14px;
  line-height: 1.15;
}
.section-head p{
  color: var(--gray);
  font-size: 16px;
  margin-top: 16px;
}
.section-dark .section-head p{ color: #c9c7bf; }

/* ---------- Grids / cards ---------- */
.grid{ display: grid; gap: 28px; }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }

.card{
  background: var(--white);
  border: 1px solid var(--line);
  padding: 32px 28px;
  border-radius: var(--radius);
}
.section-alt .card{ background: var(--white); }
.section-dark .card{ background: #211f1b; border-color: #34332f; }

.card .num{
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--gray-light);
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}
.card h3{ font-size: 18px; margin-bottom: 10px; }
.card p{ color: var(--gray); font-size: 15px; }
.section-dark .card p{ color: #b6b4ac; }

.stat{
  padding: 30px 26px;
  background: var(--paper);
  border: 1px solid var(--line);
}
.stat .stat-num{
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
}
.stat .stat-label{
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 10px 0 8px;
}
.stat .stat-desc{ font-size: 14px; color: var(--gray); }

/* checklist */
.check-list{ display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 40px; }
.check-item{ display: flex; gap: 16px; }
.check-item .mark{
  flex: none;
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 1.5px solid var(--near-black);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
}
.section-dark .check-item .mark{ border-color: var(--white); }
.check-item h4{ font-size: 16px; margin-bottom: 6px; }
.check-item p{ font-size: 14px; color: var(--gray); }
.section-dark .check-item p{ color: #b6b4ac; }

/* Bullets with dev copy */
.feature-list{ display: flex; flex-direction: column; gap: 26px; }
.feature-item{
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 18px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}
.feature-item:last-child{ border-bottom: none; padding-bottom: 0; }
.feature-item .dot{
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--near-black);
  margin-top: 6px;
}
.feature-item h3{ font-size: 18px; margin-bottom: 8px; }
.feature-item p{ color: var(--gray); font-size: 15px; }

/* steps */
.steps{
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.steps::before{
  content:'';
  position: absolute;
  top: 19px; left: 0; right: 0;
  height: 1px;
  background: var(--line);
}
.step{ position: relative; padding: 0 16px 0 0; }
.step .step-num{
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--white);
  border: 1.5px solid var(--near-black);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  position: relative;
  z-index: 2;
  margin-bottom: 20px;
}
.step h4{ font-size: 15px; margin-bottom: 8px; }
.step p{ font-size: 13.5px; color: var(--gray); }

/* quote */
.quote-block{
  text-align: center;
  padding: 100px 0;
  background: var(--near-black);
  color: var(--white);
}
.quote-block p{
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.3;
  max-width: 820px;
  margin: 0 auto;
}
.quote-block .accent{ color: var(--gray-light); font-style: italic; font-family: var(--font-body); }
.quote-block .sub{ margin-top: 22px; font-size: 15px; color: #b6b4ac; }

/* CTA band */
.cta-band{
  background: var(--paper);
  padding: 70px 0;
  text-align: center;
}
.cta-band h2{ font-size: clamp(24px, 3vw, 32px); margin-bottom: 14px; }
.cta-band p{ color: var(--gray); margin-bottom: 30px; }
.cta-band .btn-row{ display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* audience split (home) */
.split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
}
.split-item{
  padding: 56px 44px;
  position: relative;
}
.split-item + .split-item{ border-left: 1px solid var(--line); }
.split-item .eyebrow{ margin-bottom: 18px; }
.split-item h3{ font-size: 26px; margin-bottom: 14px; }
.split-item p{ color: var(--gray); margin-bottom: 26px; font-size: 15px; }
.split-item.dark{ background: var(--near-black); color: var(--white); }
.split-item.dark p{ color: #c9c7bf; }
.split-item.dark .eyebrow{ color: var(--gray-light); }
.split-item.dark .eyebrow::before{ border-color: var(--white); }

/* Footer */
.site-footer{
  background: var(--near-black);
  color: #c9c7bf;
  padding: 64px 0 28px;
}
.footer-top{
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid #34332f;
}
.footer-brand img{ height: 30px; margin-bottom: 16px; filter: invert(1); }
.footer-brand p{ font-size: 14px; color: #9c9a92; max-width: 280px; }
.footer-col h5{
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 18px;
}
.footer-col ul{ display: flex; flex-direction: column; gap: 12px; }
.footer-col a{ font-size: 14px; color: #b6b4ac; }
.footer-col a:hover{ color: var(--white); }
.footer-bottom{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  color: #7a786f;
  flex-wrap: wrap;
  gap: 12px;
}

/* Contact page */
.contact-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.contact-form{ display: flex; flex-direction: column; gap: 18px; }
.field label{
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 8px;
}
.field input, .field select, .field textarea{
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--near-black);
  border-radius: var(--radius);
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline: none;
  border-color: var(--near-black);
}
.field textarea{ resize: vertical; min-height: 110px; }

.contact-side .card{ margin-bottom: 20px; }
.contact-side .card h4{ font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gray); margin-bottom: 10px; }
.contact-side .card p, .contact-side .card a{ font-size: 17px; font-weight: 600; }

/* Utility */
.mt-0{ margin-top:0; }
.text-center{ text-align:center; margin-left:auto; margin-right:auto; }
.divider{ height:1px; background: var(--line); border:0; margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 920px){
  .nav-links{
    position: fixed;
    top: 104px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: all .2s ease;
  }
  .nav-links.open{ transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a{ width: 100%; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .header-actions .btn-ghost{ display:none; }
  .nav-toggle{ display: flex; }

  .grid-2, .grid-3, .grid-4{ grid-template-columns: 1fr; }
  .check-list{ grid-template-columns: 1fr; }
  .steps{ grid-template-columns: 1fr; gap: 28px; }
  .steps::before{ display: none; }
  .split{ grid-template-columns: 1fr; }
  .split-item + .split-item{ border-left: none; border-top: 1px solid var(--line); }
  .footer-top{ grid-template-columns: 1fr 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .hero .pattern{ opacity: 0.4; width: 480px; top: -20px; right: -160px; }
  .hero-split .container{ grid-template-columns: 1fr; }
  .hero-split .hero-photo{ order: -1; aspect-ratio: 16/10; }
  .split-photo{ grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 560px){
  .footer-top{ grid-template-columns: 1fr; gap: 30px; }
  section{ padding: 64px 0; }
  .hero{ padding: 56px 0 56px; }
}