/* Base */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial);
  color: #0f172a; /* slate-900 */
  background: #ffffff;
  line-height: 1.6;
}

:root{
  --primary: #003366;       /* Azul corporativo */
  --primary-dark: #00264D;  /* Azul más profundo */
  --secondary: #0056A3;     /* Azul contraste */
  --accent: #E6F0FA;        /* Azul claro */
  --ink: #0f172a;           /* Texto principal */
  --muted: #6B7280;         /* Texto secundario */
  --soft: #F9FAFB;          /* Fondo muy claro */
  --border: #E5E7EB;        /* Gris bordes */
}

.container{
  width: min(1120px, 92vw);
  margin-inline: auto;
}

/* Header */
.site-header{
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .nav{
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 0;
}

.brand{
  display: inline-flex; align-items: center; gap: .5rem;
  text-decoration: none; color: var(--ink); font-weight: 700; letter-spacing: .3px;
}

.site-header nav{
  display: flex; gap: 1rem; align-items: center;
}

.site-header nav a{
  text-decoration: none; color: var(--muted); font-weight: 600; font-size: .95rem;
}
.site-header nav a:hover{ color: var(--primary); }

.btn{
  display: inline-flex; align-items: center; justify-content: center;
  height: 42px; padding: 0 18px; border-radius: 12px;
  border: 1px solid transparent; text-decoration: none; font-weight: 700;
  transition: .2s ease;
}

.btn-ghost{ border-color: var(--border); color: var(--ink); background: #fff; }
.btn-ghost:hover{ border-color: var(--primary-dark); color: var(--primary-dark); }

.btn-primary{ background: var(--primary); color: #fff; }
.btn-primary:hover{ background: var(--primary-dark); }

.btn-secondary{ background: var(--accent); color: var(--primary-dark); border-color: var(--secondary); }
.btn-secondary:hover{ background: #D6E4F5; color: var(--primary-dark); }

/* Hero */
.hero{
  padding: 6rem 0 3rem;
  background: radial-gradient(1200px 600px at 75% -10%, var(--accent) 0, transparent 60%);
}

.hero-grid{
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 2rem; align-items: center;
}

.hero h1{ font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1; margin: 0 0 .75rem; }
.hero p{ font-size: 1.05rem; color: var(--muted); margin: 0 0 1rem; }
.hero .whatsapp{ color: var(--primary-dark); }

.cta-group{ display: flex; gap: .75rem; margin: 1rem 0 1.25rem; flex-wrap: wrap; }
.hero-bullets{ margin: 0; padding-left: 1.1rem; color: var(--muted); }

/* Mockups */
.hero-media{ position: relative; min-height: 360px; }
.screen-mock{
  --r: 22px;
  width: clamp(300px, 46vw, 560px);
  aspect-ratio: 16/10;
  background: #fff; border-radius: var(--r);
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(0,0,0,.06);
  position: relative; z-index: 1;
}
.screen-mock .toolbar{
  height: 42px; border-bottom: 1px solid var(--border); border-top-left-radius: var(--r); border-top-right-radius: var(--r);
  background: linear-gradient(180deg, #f8fafc, #eef2f7);
}
.screen-mock .window{ display: grid; grid-template-columns: 180px 1fr; height: calc(100% - 42px); }
.screen-mock .sidebar{ background: #f8fafc; border-right: 1px solid var(--border); }
.screen-mock .content{ padding: 18px; display: grid; gap: 12px; align-content: start; }
.screen-mock .card{ height: 72px; border-radius: 12px; background: #f1f5f9; border: 1px solid var(--border); }

.phone-mock{
  position: absolute; right: 0; bottom: -16px; width: 180px; height: 360px;
  background: #111; border-radius: 28px; border: 8px solid #1f2937; box-shadow: 0 8px 24px rgba(0,0,0,.15);
}
.phone-mock .notch{
  width: 60%; height: 18px; background: #1f2937; border-bottom-left-radius: 16px; border-bottom-right-radius: 16px;
  margin: 0 auto; transform: translateY(-2px);
}
.phone-mock .chat-bubble{
  position: absolute; left: 10px; right: 10px; bottom: 16px;
  background: var(--accent); padding: 10px 12px; border-radius: 14px 14px 14px 4px;
  font-size: .9rem; color: var(--primary-dark);
}

/* Sections */
.section-header{ text-align: center; margin-bottom: 1.25rem; }
.section-header h2{ margin: 0 0 .5rem; font-size: clamp(1.5rem, 4vw, 2rem); }
.section-header p{ margin: 0; color: var(--muted); }

.benefits{ padding: 3rem 0; background: #fff; }
.cards-grid{
  display: grid; gap: 1rem;
  grid-template-columns: repeat(4, minmax(0,1fr));
}
.cards-grid .card{
  border: 1px solid var(--border); border-radius: 16px; padding: 1rem; background: #fff;
}
.cards-grid .card h3{ margin: .25rem 0 .25rem; }
.cards-grid .card .icon{ font-size: 1.5rem; }

.features{ padding: 3rem 0; background: var(--soft); }
.feature-list{
  display: grid; gap: 1rem;
  grid-template-columns: repeat(2, minmax(0,1fr));
}
.feature h3{ margin: .25rem 0 .25rem; }

.how{ padding: 3rem 0; }
.steps{
  counter-reset: step; display: grid; gap: 1rem; grid-template-columns: repeat(3, minmax(0,1fr));
  list-style: none; padding: 0; margin: 0;
}
.steps li{
  border: 1px solid var(--border); border-radius: 16px; padding: 1rem; background: #fff;
}
.steps li h3::before{
  counter-increment: step; content: counter(step) ". ";
  color: var(--primary-dark);
}

.testimonials{ padding: 3rem 0; background: #fff; }
.testi-grid{
  display: grid; gap: 1rem;
  grid-template-columns: repeat(2, minmax(0,1fr));
}
blockquote{ margin: 0; padding: 1rem; background: var(--soft); border: 1px solid var(--border); border-radius: 16px; }
blockquote footer{ margin-top: .5rem; color: var(--muted); font-size: .9rem; }

.contact{ padding: 3rem 0; background: var(--soft); }
.contact-form{ border: 1px solid var(--border); background: #fff; border-radius: 16px; padding: 1rem; }
.contact-form .grid{ display: grid; gap: 1rem; grid-template-columns: repeat(2, minmax(0,1fr)); }
.contact-form label{ display: grid; gap: .35rem; font-weight: 600; color: var(--muted); }
.contact-form input, .contact-form textarea{
  border: 1px solid var(--border); border-radius: 10px; padding: .7rem .8rem; font: inherit;
}
.contact-form input:focus, .contact-form textarea:focus{ outline: 2px solid var(--secondary); border-color: var(--primary-dark); }
.form-actions{ display: flex; gap: .75rem; flex-wrap: wrap; align-items: center; margin-top: .5rem; }
.pricing-note{ color: var(--muted); font-size: .95rem; }

/* Footer */
.site-footer{ border-top: 1px solid var(--border); background: #fff; }
.site-footer .container{ display: flex; gap: 1rem; justify-content: space-between; align-items: center; padding: 1rem 0; flex-wrap: wrap; }
.foot-nav{ display: flex; gap: 1rem; }
.foot-nav a{ color: var(--muted); text-decoration: none; }
.foot-nav a:hover{ color: var(--primary); }

/* WhatsApp float */
.wa-float{
  position: fixed; right: 18px; bottom: 18px; width: 56px; height: 56px;
  border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center;
  text-decoration: none; box-shadow: 0 10px 20px rgba(0,0,0,.15);
}
.wa-float:hover{ background: var(--primary-dark); }

/* Responsive */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .cards-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .feature-list{ grid-template-columns: 1fr; }
  .steps{ grid-template-columns: 1fr; }
  .testi-grid{ grid-template-columns: 1fr; }
  .phone-mock{ display: none; }
}

@media (max-width: 640px){
  .site-header nav a:not(.btn){ display: none; }
}