/* iTech IOT — hoja de estilos unica, sin dependencias de build/CMS. */

:root{
  --navy: #222838;
  --navy2: #002a3a;
  --yellow: #ffd500;
  --light: #f4f4f4;
  --black: #0b0b0b;
  --gray: #5a6072;
  --white: #ffffff;
  --radius: 14px;
  --maxw: 1180px;
  --shadow: 0 14px 34px rgba(0,0,0,.18);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0; background:var(--white); color:var(--black);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  line-height:1.65;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
.container{max-width:var(--maxw); margin:0 auto; padding:0 24px;}
h1,h2,h3{font-weight:800; line-height:1.15; margin:0 0 18px;}
h1{font-size:clamp(2.1rem,4.2vw,3.2rem);}
h2{font-size:clamp(1.7rem,3vw,2.5rem);}
h3{font-size:1.15rem;}
p{margin:0 0 16px; color:var(--gray);}
section{padding:80px 0; position:relative; overflow:hidden;}
.eyebrow{display:block; letter-spacing:.14em; text-transform:uppercase; font-size:.78rem; font-weight:700; color:var(--gray); margin-bottom:14px;}
.on-dark .eyebrow{color:#9aa3b8;}
.on-dark p{color:#c7cbd8;}
.on-dark h2, .on-dark h1{color:var(--white);}
.center{text-align:center; max-width:720px; margin-left:auto; margin-right:auto;}

/* Reveal on scroll (solo si JS confirma soporte; si no, visible siempre) */
.reveal{transition:opacity .7s ease, transform .7s ease;}
html.js .reveal{opacity:0; transform:translateY(28px);}
.reveal.in{opacity:1 !important; transform:translateY(0) !important;}
.reveal.d1{transition-delay:.08s;} .reveal.d2{transition-delay:.16s;}
.reveal.d3{transition-delay:.24s;} .reveal.d4{transition-delay:.32s;}

/* Botones */
.btn{display:inline-flex; align-items:center; gap:8px; padding:14px 28px; border-radius:999px; font-weight:700; font-size:.95rem; border:2px solid transparent; cursor:pointer;}
.btn-yellow{background:var(--yellow); color:var(--black);}
.btn-yellow:hover{filter:brightness(.94);}
.btn-outline{border-color:var(--white); color:var(--white);}
.btn-outline:hover{background:rgba(255,255,255,.12);}

/* Header */
header.site{position:sticky; top:0; z-index:80; background:var(--navy); border-bottom:3px solid var(--yellow);}
.nav-wrap{display:flex; align-items:center; justify-content:space-between; padding:12px 24px; max-width:var(--maxw); margin:0 auto;}
.brand img{height:42px; width:auto;}
nav.main-nav ul{list-style:none; display:flex; gap:30px; margin:0; padding:0;}
nav.main-nav a{color:#e7e9f0; font-weight:600; font-size:.95rem; padding:6px 0; position:relative;}
nav.main-nav a.active, nav.main-nav a:hover{color:var(--yellow);}
.wa-float{
  position:fixed; right:22px; bottom:22px; z-index:90; width:56px; height:56px; border-radius:50%;
  background:#25D366; display:flex; align-items:center; justify-content:center; box-shadow:var(--shadow);
}
.wa-float svg{width:28px; height:28px; fill:#fff;}

/* Hero */
.hero{background:var(--black); color:var(--white); padding:90px 0 200px;}
.hero .container{max-width:820px;}
.hero p{color:#c7c7c7;}
.hero-actions{display:flex; gap:14px; margin-top:8px; flex-wrap:wrap;}

/* Panel de problemas flotante sobre el hero */
.problem-panel{
  background:var(--light); border-radius:var(--radius); box-shadow:var(--shadow);
  margin-top:-140px; position:relative; z-index:5; padding:44px 36px;
  display:grid; grid-template-columns:repeat(4,1fr); gap:34px;
}
.problem-item{text-align:center;}
.problem-item img{height:70px; margin:0 auto 16px;}
.problem-item h3{margin-bottom:8px; font-size:1.1rem;}
.problem-item p{font-size:.9rem; margin:0;}

/* Seccion tecnologia (navy) con blob */
.tech-section{background:var(--navy);}
.blob{
  position:absolute; width:340px; height:340px; background:var(--yellow); border-radius:58% 42% 63% 37% / 41% 51% 49% 59%;
  z-index:0; animation:blobmove 9s ease-in-out infinite;
}
.blob.left{left:-90px; top:20px;}
.tech-section .container{position:relative; z-index:1;}
.tech-grid{display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center;}
@keyframes blobmove{
  0%,100%{border-radius:58% 42% 63% 37% / 41% 51% 49% 59%; transform:rotate(0deg) scale(1);}
  50%{border-radius:42% 58% 39% 61% / 55% 43% 57% 45%; transform:rotate(8deg) scale(1.05);}
}

/* Variables sensadas — sobre foto */
.variables-section{
  background-size:cover; background-position:center; padding:0;
}
.variables-overlay{background:rgba(10,12,20,.72); padding:80px 0;}
.var-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:0; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow);}
.var-card{padding:30px 26px; color:var(--white);}
.var-card .dots{color:rgba(255,255,255,.6); letter-spacing:3px; margin-bottom:10px;}
.var-card h3{color:var(--white); margin-bottom:10px;}
.var-card p{color:rgba(255,255,255,.85); font-size:.88rem; margin:0;}
.var-card:nth-child(1){background:#0f4c6b;}
.var-card:nth-child(2){background:#146b8c;}
.var-card:nth-child(3){background:#1b8a9e;}
.var-card:nth-child(4){background:#22a598;}
.var-card:nth-child(5){background:#3a1d0f;}
.var-card:nth-child(6){background:#6b2e0f;}
.var-card:nth-child(7){background:#a8430f;}
.var-card:nth-child(8){background:#e8720f;}
.var-grid.row2{margin-top:2px;}

/* Banner amarillo */
.yellow-banner{background:var(--yellow); padding:60px 0;}
.yellow-banner .eyebrow{color:#5a4b00;}
.yellow-banner p{color:#3a3100; font-size:1.25rem; font-weight:700; margin:0; max-width:900px;}

/* Caracteristicas */
.feature-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:26px; margin-top:20px;}
.feature-card{background:var(--light); border-radius:var(--radius); padding:28px; text-align:center;}
.feature-card .ico{
  width:58px; height:58px; border-radius:50%; background:var(--navy); color:var(--yellow);
  display:flex; align-items:center; justify-content:center; margin:0 auto 16px; font-size:1.4rem;
}
.feature-card h3{margin-bottom:8px; font-size:1.02rem;}
.feature-card p{font-size:.88rem; margin:0;}

/* Beneficios */
.benefits-section{background:var(--navy);}
.benefit-list{list-style:none; margin:0; padding:0; display:grid; grid-template-columns:1fr 1fr; gap:14px;}
.benefit-list li{
  color:#e7e9f0; padding:14px 18px; background:rgba(255,255,255,.06); border-radius:10px;
  display:flex; gap:10px; align-items:flex-start; font-size:.94rem;
}
.benefit-list li::before{content:'\2713'; color:var(--yellow); font-weight:800;}
.stat-row{display:grid; grid-template-columns:repeat(2,1fr); gap:24px; margin-top:40px;}
.stat-card{background:rgba(255,255,255,.06); border-radius:var(--radius); padding:26px; text-align:center;}
.stat-card .num{font-size:2.4rem; font-weight:800; color:var(--yellow);}
.stat-card p{color:#c7cbd8; margin:6px 0 0; font-size:.88rem;}

/* Ventajas */
.advantage-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:18px;}
.advantage-item{display:flex; gap:14px; align-items:flex-start; padding:18px; background:var(--light); border-radius:12px;}
.advantage-item .n{
  width:34px; height:34px; border-radius:50%; background:var(--yellow); color:var(--black);
  display:flex; align-items:center; justify-content:center; font-weight:800; flex-shrink:0;
}

/* Comparacion IOT vs Manual */
.compare-grid{display:grid; grid-template-columns:1fr 1fr; gap:26px;}
.compare-card{border-radius:var(--radius); padding:34px; color:var(--white);}
.compare-card.iot{background:linear-gradient(160deg,#1b8a9e,#0f4c6b);}
.compare-card.manual{background:linear-gradient(160deg,#4a4f5c,#2b2f3a);}
.compare-card h3{color:var(--white); font-size:1.3rem;}
.compare-card ul{margin:0; padding-left:20px; color:rgba(255,255,255,.9); font-size:.92rem;}
.compare-card li{margin-bottom:10px;}

/* Bloques de cierre */
.closing-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:28px;}
.closing-card h3{color:var(--navy);}
.closing-card{border-top:4px solid var(--yellow); padding-top:18px;}

/* Quienes somos */
.mv-grid{display:grid; grid-template-columns:1fr 1fr; gap:26px; margin-top:20px;}
.mv-card{background:var(--light); border-radius:var(--radius); padding:32px;}
.mv-card h3{color:var(--navy);}
.reason-list{list-style:none; margin:0; padding:0; display:grid; gap:14px;}
.reason-list li{display:flex; gap:12px; padding:16px 18px; background:var(--light); border-radius:10px; font-size:.94rem; color:#333;}
.reason-list li::before{content:'\2726'; color:var(--yellow); font-size:1.1rem;}

/* Contacto / formulario */
.contact-wrap{display:grid; grid-template-columns:.9fr 1.1fr; gap:48px;}
form.contact-form{background:var(--light); border-radius:var(--radius); padding:30px; display:grid; gap:16px;}
form.contact-form label{font-weight:600; font-size:.88rem; color:var(--navy); display:block; margin-bottom:6px;}
form.contact-form input[type=text], form.contact-form input[type=email], form.contact-form select, form.contact-form textarea{
  width:100%; padding:12px 14px; border-radius:8px; border:1px solid #dcdfe6; font-family:inherit; font-size:.95rem; background:var(--white);
}
form.contact-form textarea{min-height:120px; resize:vertical;}
.checkbox-group{display:grid; gap:8px;}
.checkbox-group label{display:flex; align-items:center; gap:8px; font-weight:400; color:#333;}
.checkbox-group input{width:auto;}
.contact-info-card{padding-top:8px;}
.contact-info-card .item{display:flex; gap:14px; margin-bottom:20px;}
.contact-info-card .ico{width:44px; height:44px; border-radius:12px; background:var(--light); display:flex; align-items:center; justify-content:center; color:var(--navy); flex-shrink:0;}

/* Footer */
footer.site{background:var(--black); color:#aab0c0; padding:50px 0 30px;}
.footer-grid{display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:32px;}
footer.site img.flogo{height:38px; margin-bottom:14px;}
footer.site .badges{display:flex; gap:10px; margin-top:14px;}
footer.site .badges img{height:40px;}
footer.site p{color:#7d8296; font-size:.85rem;}
.foot-bottom{border-top:1px solid #24283a; margin-top:30px; padding-top:20px; text-align:center; font-size:.82rem; color:#5f6478;}

/* Responsive */
@media (max-width:980px){
  .problem-panel, .feature-grid, .tech-grid, .contact-wrap, .compare-grid, .closing-grid, .mv-grid, .advantage-grid, .var-grid, .benefit-list, .stat-row{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:640px){
  .problem-panel, .feature-grid, .tech-grid, .contact-wrap, .compare-grid, .closing-grid, .mv-grid, .advantage-grid, .var-grid, .benefit-list, .stat-row{grid-template-columns:1fr;}
  .problem-panel{margin-top:-80px; padding:28px 20px;}
  nav.main-nav ul{gap:16px; flex-wrap:wrap;}
  .nav-wrap{flex-direction:column; gap:10px; padding:14px;}
}