/* ============ TOKENS ============ */
:root{
  --white:#FFFFFF;
  --surface:#F5F6F8;
  --surface-2:#EEF0F3;
  --border:#DFE2E8;

  --gray-900:#1B2233;
  --gray-700:#3A445A;
  --gray-500:#5B6472;
  --gray-400:#8A93A3;

  --blue-600:#2C64EF;
  --blue-700:#1E4FD6;
  --blue-50:#EAF0FE;

  /* CAMBIO: verde oficial de WhatsApp */
  --wa-green:#25D366;
  --wa-green-dark:#1EBE57;

  --radius:14px;
  --shadow-sm:0 1px 2px rgba(27,34,51,.06);
  --shadow-md:0 12px 32px rgba(27,34,51,.08);

  --font-display:'Sora', sans-serif;
  --font-body:'Inter', sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--gray-700);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:var(--font-display);
  color:var(--gray-900);
  margin:0 0 .5em;
  line-height:1.15;
}
p{margin:0 0 1em;}
a{color:inherit;text-decoration:none;}
img,svg{display:block;max-width:100%;}
ul,ol{margin:0;padding:0;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.01ms !important; transition-duration:.01ms !important;}
}

:focus-visible{
  outline:2px solid var(--blue-600);
  outline-offset:3px;
  border-radius:4px;
}

.container{
  width:100%;
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:.95rem;
  padding:13px 26px;
  border-radius:10px;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background .18s ease, border-color .18s ease, transform .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--blue-600);
  color:var(--white);
}
.btn-primary:hover{background:var(--blue-700); transform:translateY(-1px);}
.btn-ghost{
  background:var(--white);
  color:var(--gray-900);
  border-color:var(--gray-400);
  box-shadow:var(--shadow-sm);
}
.btn-ghost:hover{
  border-color:var(--blue-600);
  color:var(--blue-600);
  transform:translateY(-1px);
}
/* Botón email — borde visible y estilo de botón claro */
.btn-email{
  background:var(--white);
  color:var(--blue-600);
  border:1.5px solid var(--blue-600);
  box-shadow:var(--shadow-sm);
}
.btn-email:hover{
  background:var(--blue-50);
  border-color:var(--blue-700);
  color:var(--blue-700);
  transform:translateY(-1px);
}
.btn-email svg{
  flex-shrink:0;
}
.btn-sm{padding:9px 16px; font-size:.85rem;}
.btn-lg{padding:16px 34px; font-size:1rem;}

/* CAMBIO: botones WhatsApp — verde oficial */
.btn-whatsapp{
  background:var(--wa-green);
  color:var(--white);
}
.btn-whatsapp:hover{
  background:var(--wa-green-dark);
  transform:translateY(-1px);
}

/* ============ HEADER ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:84px;
}
/* CAMBIO: logo más a la izquierda — menos padding izquierdo solo en el header */
.site-header .container{
  padding-left:4px;
  padding-right:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
/* CAMBIO: logo simple más grande, sin texto al lado */
.brand-logo{
  display:block;
  width:auto;
  height:58px;
  object-fit:contain;
  flex-shrink:0;
}
.brand-logo-footer{height:52px;}
.brand-name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.25rem;
  color:var(--gray-900);
  letter-spacing:-.01em;
}
.brand-accent{color:var(--blue-600);}

.main-nav{
  display:flex;
  align-items:center;
  /* CAMBIO: gap reducido para que quepa todo en una línea */
  gap:14px;
  flex:1;
  justify-content:center;
  min-width:0;
}
.main-nav a{
  /* CAMBIO: fuente más chica + nowrap para evitar saltos de línea en el menú */
  font-size:.78rem;
  font-weight:500;
  color:var(--gray-700);
  position:relative;
  padding:6px 2px;
  transition:color .15s ease;
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-2px;
  height:2px;
  background:var(--blue-600);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
}
.main-nav a:hover{color:var(--gray-900);}
.main-nav a:hover::after{transform:scaleX(1);}
/* Subrayado activo: página actual en el header */
.main-nav a[aria-current="page"]{
  color:var(--gray-900);
  font-weight:600;
}
.main-nav a[aria-current="page"]::after{
  transform:scaleX(1);
}

.header-actions{display:flex; align-items:center; gap:14px;}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:38px;
  height:38px;
  background:none;
  border:1px solid var(--border);
  border-radius:8px;
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  margin:0 auto;
  background:var(--gray-900);
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ HERO ============ */
.hero{
  padding:88px 0 96px;
  background:
    radial-gradient(720px 420px at 82% 8%, var(--blue-50), transparent 60%),
    var(--white);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  align-items:center;
  gap:56px;
}
.eyebrow{
  font-family:var(--font-body);
  font-weight:600;
  font-size:.82rem;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--blue-600);
  margin-bottom:14px;
}
.hero h1{
  font-size:clamp(2.1rem, 4vw, 3.15rem);
  font-weight:700;
  letter-spacing:-.02em;
}
.hero-sub{
  font-size:1.08rem;
  color:var(--gray-500);
  max-width:46ch;
}
.hero-actions{
  display:flex;
  gap:14px;
  margin-top:8px;
  flex-wrap:wrap;
}
.hero-art{
  justify-self:center;
  width:100%;
  max-width:420px;
  display:flex;
  align-items:center;
  justify-content:center;
}
/* CAMBIO: logo principal grande y visible junto al texto del hero */
.hero-logo-principal{
  width:100%;
  max-width:380px;
  height:auto;
  object-fit:contain;
  display:block;
}

/* ============ SECTIONS ============ */
.section{
  padding:88px 0;
  border-top:1px solid var(--border);
}
.section-alt{background:var(--surface);}
.eyebrow-center{text-align:center;}
.section-title{
  font-size:clamp(1.5rem, 2.6vw, 2rem);
  text-align:center;
  max-width:46ch;
  margin-left:auto;
  margin-right:auto;
}
.section-title.align-left{text-align:left; margin-left:0;}
/* Título principal de sección (Facturación / WhatsCalendar / Servicios) — azul */
.section-title-primary{
  font-size:clamp(2rem, 4vw, 2.75rem);
  max-width:22ch;
  margin-bottom:.35em;
  color:var(--blue-600);
}
.section-subtitle{
  text-align:center;
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(1.05rem, 1.8vw, 1.25rem);
  color:var(--gray-700);
  margin:0 auto 14px;
  max-width:40ch;
}
.section-lede{
  text-align:center;
  color:var(--gray-500);
  max-width:62ch;
  margin:0 auto 48px;
  font-size:1.02rem;
}
.section-lede.align-left{text-align:left; margin-left:0;}
/* Texto explicativo más chico para priorizar el título */
.section-lede-sm{
  font-size:.92rem;
  max-width:58ch;
  line-height:1.55;
}

/* ============ CARDS ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:24px;
}
.card{
  background:var(--white);
  border:1px solid var(--border);
  border-top:3px solid var(--gray-300, var(--border));
  border-radius:var(--radius);
  padding:32px 28px;
  transition:border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.card:hover{
  border-top-color:var(--blue-600);
  box-shadow:var(--shadow-md);
  transform:translateY(-3px);
}
.card-icon{
  width:44px;
  height:44px;
  border-radius:10px;
  background:var(--blue-50);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:18px;
}
.card h3{font-size:1.08rem;}
.card p{color:var(--gray-500); font-size:.95rem;}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:.9rem;
  color:var(--blue-600);
  margin-top:6px;
}
.card-link span{transition:transform .15s ease;}
.card-link:hover span{transform:translateX(3px);}

/* ============ HIGHLIGHT ============ */
.highlight{
  background:var(--white);
}
.highlight-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
  align-items:start;
  padding:44px 48px;
  background:var(--surface);
  border:1px solid var(--border);
  border-left:4px solid var(--blue-600);
  border-radius:var(--radius);
}
.highlight .section-title{color:var(--gray-900);}
.highlight-text{color:var(--gray-500); font-size:1.02rem; max-width:70ch;}

/* ============ REASONS LIST ============ */
.reasons{
  list-style:none;
  display:grid;
  gap:28px;
  max-width:820px;
  margin:0 auto;
}
.reasons li{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:20px;
  align-items:start;
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:26px 28px;
}
.reasons-num{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.4rem;
  color:var(--blue-600);
  background:var(--blue-50);
  width:44px;
  height:44px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.reasons h3{font-size:1.05rem; margin-bottom:.3em;}
.reasons p{color:var(--gray-500); font-size:.95rem; margin:0;}

/* ============ CONTACT ============ */
.contact-grid{
  display:grid;
  grid-template-columns:1.3fr auto;
  gap:32px;
  align-items:center;
}
.contact-info{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:18px;
}
.contact-item{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:600;
  color:var(--gray-900);
}
.contact-item:hover{color:var(--blue-600);}

/* ============ FOOTER ============ */
.site-footer{
  background:var(--surface);
  border-top:1px solid var(--border);
  padding:48px 0 0;
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  padding-bottom:32px;
}
.brand-footer{gap:0;}
.footer-nav{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
}
.footer-nav a{font-size:.9rem; color:var(--gray-500); position:relative; padding-bottom:4px;}
.footer-nav a:hover{color:var(--blue-600);}
/* Página activa en footer (misma idea que el subrayado del header) */
.footer-nav a::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:0;
  height:2px;
  background:var(--blue-600);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
}
.footer-nav a:hover::after{transform:scaleX(1);}
.footer-nav a[aria-current="page"]{
  color:var(--blue-600);
  font-weight:600;
}
.footer-nav a[aria-current="page"]::after{
  transform:scaleX(1);
}

/* Página de contacto */
.contact-page{
  text-align:center;
  max-width:720px;
  margin:0 auto;
}
.contact-page-title{
  max-width:18ch;
  margin-left:auto;
  margin-right:auto;
}
.contact-channels{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
  margin-top:28px;
}
.contact-hero{
  padding-bottom:72px;
}
/* CAMBIO: footer WhatsApp como botón verde */
.footer-whatsapp{
  flex-shrink:0;
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:18px 0;
}
.footer-bottom p{
  margin:0;
  font-size:.82rem;
  color:var(--gray-400);
  text-align:center;
}

/* ============ WHATSAPP FLOAT ============ */
.whatsapp-float{
  position:fixed;
  right:22px;
  bottom:22px;
  width:56px;
  height:56px;
  border-radius:50%;
  /* CAMBIO: flotante en verde oficial WhatsApp */
  background:var(--wa-green);
  color:var(--white);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:var(--shadow-md);
  z-index:90;
  transition:transform .18s ease, background .18s ease;
}
.whatsapp-float:hover{background:var(--wa-green-dark); transform:translateY(-2px);}
.whatsapp-float svg{
  width:28px;
  height:28px;
  flex-shrink:0;
  display:block;
}

/* ============ PAGE: FACTURACIÓN ELECTRÓNICA ============ */
.page-hero{
  padding:72px 0 64px;
}
.page-hero h1{
  font-size:clamp(1.75rem, 3.4vw, 2.55rem);
  max-width:28ch;
  margin-bottom:16px;
}
.page-hero .hero-sub{
  max-width:62ch;
  margin-bottom:8px;
}
.feature-list{
  list-style:none;
  display:grid;
  gap:28px;
  max-width:920px;
  margin:0 auto;
}
.feature-block{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:22px;
  align-items:start;
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 30px;
}
.feature-block h2{
  font-size:1.25rem;
  margin-bottom:.45em;
}
.feature-block p{
  color:var(--gray-500);
  font-size:1rem;
  margin-bottom:18px;
  max-width:65ch;
}
.feature-num{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.35rem;
  color:var(--blue-600);
  background:var(--blue-50);
  width:48px;
  height:48px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.feature-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
}

/* ============ SCROLLED STATE ============ */
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}

/* ============ RESPONSIVE ============ */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-art{max-width:360px; order:-1;}
  .card-grid{grid-template-columns:repeat(2, 1fr);}
  .highlight-grid{grid-template-columns:1fr; padding:32px 28px;}
  .contact-grid{grid-template-columns:1fr; text-align:left;}
}

@media (max-width:760px){
  .main-nav{
    position:absolute;
    top:84px;
    left:0;
    right:0;
    background:var(--white);
    border-bottom:1px solid var(--border);
    flex-direction:column;
    align-items:flex-start;
    padding:18px 24px 26px;
    gap:16px;
    display:none;
    box-shadow:var(--shadow-md);
  }
  .main-nav.open{display:flex;}
  .nav-toggle{display:flex;}
  .header-actions .btn-sm span{display:none;}
  .card-grid{grid-template-columns:1fr;}
  .reasons li{grid-template-columns:auto 1fr;}
  .feature-block{grid-template-columns:auto 1fr; padding:26px 22px;}
  .section{padding:64px 0;}
  .hero{padding:56px 0 64px;}
  .page-hero{padding:48px 0 40px;}
}

@media (max-width:480px){
  .header-actions .btn-sm{padding:9px 12px;}
}