/* DIÁBOLO IA — Sistema de identidad visual (wireframe fase 1) */
:root{
  --carbon:#14120F;
  --carbon-soft:#201F1C;
  --white:#FFFFFF;
  --sand:#F7F3EA;
  --sand-dark:#E9E3D5;
  --red:#B3261E;
  --red-dark:#8C1D17;
  --stone:#6B6660;
  --stone-light:#B3AB9F;
  --serif:'Cormorant Garamond', Georgia, serif;
  --sans:'Jost', -apple-system, sans-serif;
}
*{box-sizing:border-box; margin:0; padding:0;}
body{
  font-family:var(--sans);
  color:var(--carbon-soft);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
.wrap{max-width:1180px; margin:0 auto; padding:0 32px;}
.eyebrow{
  font-family:var(--sans); font-size:0.72rem; letter-spacing:0.18em; text-transform:uppercase;
  color:var(--red); font-weight:500; margin-bottom:14px; display:block;
}
h1,h2,h3{font-family:var(--serif); font-weight:600; color:var(--carbon-soft); letter-spacing:-0.01em;}
h1{font-size:3.4rem; line-height:1.08;}
h2{font-size:2.3rem; line-height:1.15;}
h3{font-size:1.35rem; line-height:1.3;}
p.lead{font-size:1.15rem; color:var(--stone); max-width:640px;}
p{color:var(--stone);}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:22px 32px; background:rgba(20,18,15,0.0);
  transition:background .3s;
}
.site-header.solid{background:var(--white); box-shadow:0 1px 0 var(--sand-dark);}
.logo{font-family:var(--serif); font-weight:700; font-size:1.5rem; color:var(--white); display:flex; align-items:center; gap:9px;}
.site-header.solid .logo{color:var(--carbon-soft);}
.logo .dot{color:var(--red);}
.logo img{height:28px; width:auto; display:block;}
.nav{display:flex; gap:34px; align-items:center;}
.nav a{font-size:0.86rem; color:rgba(255,255,255,0.85); font-weight:500;}
.site-header.solid .nav a{color:var(--carbon-soft);}
.nav a:hover{color:var(--red);}
.nav-toggle{display:none; background:none; border:1px solid rgba(255,255,255,0.5); color:var(--white); font-size:1.1rem; padding:8px 14px; cursor:pointer;}
.site-header.solid .nav-toggle{color:var(--carbon-soft); border-color:var(--sand-dark);}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 28px; border-radius:2px; font-size:0.86rem; font-weight:600;
  letter-spacing:0.02em; border:1px solid transparent; cursor:pointer;
}
.btn-primary{background:var(--red); color:var(--white);}
.btn-primary:hover{background:var(--red-dark);}
.btn-ghost{border-color:rgba(255,255,255,0.5); color:var(--white);}
.btn-ghost:hover{border-color:var(--white);}
.btn-dark{background:var(--carbon-soft); color:var(--white);}
.btn-dark:hover{background:var(--carbon);}

/* Hero */
.hero{
  position:relative; min-height:92vh; display:flex; align-items:center;
  padding:150px 0 90px; overflow:hidden;
}
.hero-bg{
  position:absolute; inset:-20px; background-size:cover; background-position:center;
  filter:blur(7px) brightness(0.8); transform:scale(1.06); z-index:0;
}
.hero::after{
  content:''; position:absolute; inset:0; z-index:1;
  background:linear-gradient(115deg, rgba(20,18,15,0.82) 0%, rgba(20,18,15,0.55) 45%, rgba(20,18,15,0.35) 100%);
}
.hero-inner{position:relative; z-index:2; color:var(--white); display:flex; align-items:center; gap:60px; flex-wrap:wrap;}
.hero-text{flex:1 1 480px; max-width:600px;}
.hero h1{color:var(--white);}
.hero p.lead{color:rgba(255,255,255,0.82); margin:22px 0 8px;}
.hero-ctas{display:flex; gap:16px; margin-top:26px;}

/* Hero phone mock */
.hero-phone-wrap{flex:0 0 auto; margin-left:auto;}
.hero-phone{
  width:290px; background:var(--carbon-soft); border-radius:28px; padding:10px;
  box-shadow:0 40px 90px rgba(0,0,0,0.5); border:1px solid rgba(255,255,255,0.08);
}
.hero-phone .screen{background:var(--white); border-radius:20px; overflow:hidden;}
.hero-phone .notch{width:70px; height:18px; background:var(--carbon-soft); border-radius:0 0 12px 12px; margin:0 auto;}
.hero-phone .chat-head{padding:14px 16px;}
.hero-phone .chat-body{padding:16px; min-height:0;}
.hero-phone .bubble{font-size:0.8rem; max-width:88%;}

/* Sections */
section{padding:110px 0;}
section.tight{padding:70px 0;}
.section-head{max-width:640px; margin-bottom:56px;}
.section-head.center{margin-left:auto; margin-right:auto; text-align:center;}

.bg-sand{background:var(--sand);}
.bg-carbon{background:var(--carbon);}
.bg-carbon h2, .bg-carbon h3{color:var(--white);}
.bg-carbon p{color:rgba(255,255,255,0.65);}
.bg-carbon .eyebrow{color:var(--red);}

/* Grids */
.grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:24px;}
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:28px;}
.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center;}

/* Cards */
.card{background:var(--white); border:1px solid var(--sand-dark); padding:34px 28px; border-radius:2px;}
.card .icon{font-size:1.4rem; margin-bottom:16px; display:block;}
.card.problem{background:var(--carbon-soft); border-color:var(--carbon-soft);}
.card.problem .icon{color:var(--red);}
.card.problem h3, .card.problem p{color:var(--white);}
.card.problem p{color:rgba(255,255,255,0.6); font-size:0.92rem;}

.step{display:flex; gap:22px; align-items:flex-start; padding:28px 0; border-bottom:1px solid var(--sand-dark);}
.step:last-child{border-bottom:none;}
.step-num{font-family:var(--serif); font-size:2.2rem; color:var(--red); font-weight:600; min-width:56px;}

/* Chat mock */
.chat-mock{
  background:var(--white); border:1px solid var(--sand-dark); border-radius:6px;
  width:100%; max-width:420px; box-shadow:0 24px 60px rgba(20,18,15,0.18);
  overflow:hidden;
}
.chat-mock .chat-head{background:var(--carbon-soft); color:var(--white); padding:16px 20px; display:flex; align-items:center; gap:10px; font-size:0.9rem; font-weight:500;}
.chat-mock .chat-head .pulse{width:8px; height:8px; border-radius:50%; background:#4ADE80;}
.chat-mock .chat-body{padding:20px; display:flex; flex-direction:column; gap:12px; min-height:220px;}
.bubble{padding:12px 16px; border-radius:14px; font-size:0.88rem; max-width:82%;}
.bubble.user{align-self:flex-end; background:var(--sand); color:var(--carbon-soft); border-bottom-right-radius:3px;}
.bubble.bot{align-self:flex-start; background:rgba(179,38,30,0.08); color:var(--carbon-soft); border-bottom-left-radius:3px;}
.chat-mock .chat-suggestions{padding:0 20px 20px; display:flex; flex-wrap:wrap; gap:8px;}
.chip{border:1px solid var(--sand-dark); border-radius:20px; padding:8px 14px; font-size:0.78rem; color:var(--stone); background:var(--white);}

/* Comparison table (antes/despues) */
.compare{display:grid; grid-template-columns:1fr 1fr; gap:0; border:1px solid var(--sand-dark);}
.compare > div{padding:40px;}
.compare .antes{background:var(--sand);}
.compare .despues{background:var(--carbon-soft); color:var(--white);}
.compare .despues p, .compare .despues li{color:rgba(255,255,255,0.75);}
.compare ul{list-style:none; margin-top:18px;}
.compare li{padding:8px 0; font-size:0.92rem; border-bottom:1px solid rgba(0,0,0,0.06);}
.compare .despues li{border-bottom-color:rgba(255,255,255,0.08);}

/* Footer */
footer{background:var(--carbon); color:rgba(255,255,255,0.6); padding:70px 0 32px;}
footer h3{color:var(--white); font-size:1.1rem;}
footer a{color:rgba(255,255,255,0.6); font-size:0.86rem;}
footer a:hover{color:var(--white);}
.footer-grid{display:grid; grid-template-columns:2fr 1fr 1fr; gap:40px; padding-bottom:50px; border-bottom:1px solid rgba(255,255,255,0.1);}
.footer-grid ul{list-style:none; display:flex; flex-direction:column; gap:10px; margin-top:16px;}
.footer-bottom{display:flex; justify-content:space-between; padding-top:28px; font-size:0.78rem;}
.qr-block{display:flex; align-items:center; gap:14px; margin-top:20px;}
.qr-box{width:64px; height:64px; background:var(--white); border-radius:4px; display:flex; align-items:center; justify-content:center; font-size:0.6rem; color:var(--carbon); text-align:center; padding:4px;}
.footer-mascot{position:absolute; right:0; bottom:-10px; width:120px; opacity:0.96; pointer-events:none;}

/* Any single-photo slot: fixed frame, crops whatever image (vertical or horizontal) without breaking layout */
.teaser-photo{display:block; width:100%; aspect-ratio:4/3; border-radius:2px; overflow:hidden;}
.teaser-photo img{width:100%; height:100%; object-fit:cover; border-radius:0;}

.tag{display:inline-block; font-size:0.72rem; letter-spacing:0.08em; text-transform:uppercase; color:var(--red); border:1px solid var(--red); border-radius:20px; padding:6px 14px; margin-bottom:20px;}

.cta-band{background:var(--red); padding:80px 0; text-align:center;}
.cta-band h2{color:var(--white);}
.cta-band p{color:rgba(255,255,255,0.85); margin:16px 0 32px;}
.cta-band .btn-dark{background:var(--carbon);}

@media(max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:1fr;}
  .grid-2{grid-template-columns:1fr; gap:30px;}
  .compare{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-mascot{display:none;}
  h1{font-size:2.3rem;}
  h2{font-size:1.8rem;}
  .not-chatbot{grid-template-columns:1fr;}
  .not-chatbot .no{border-right:none; border-bottom:1px solid rgba(255,255,255,0.12);}
  .example-compare{grid-template-columns:1fr;}
  .demo-layout{grid-template-columns:1fr;}
  .gallery{grid-template-columns:1fr 1fr; grid-template-rows:auto auto auto; height:auto;}
  .gallery .g1{grid-row:auto; grid-column:1 / 3; aspect-ratio:16/9;}
  .gallery img{aspect-ratio:1/1;}
}

@media(max-width:1080px){
  .hero-inner{flex-direction:column; align-items:flex-start;}
  .hero-phone-wrap{margin-left:0;}
  .hero-phone{width:250px;}
}

@media(max-width:780px){
  .hero{padding:130px 0 60px;}
  .nav-toggle{display:inline-flex; align-items:center; justify-content:center;}
  .cta-desktop{display:none;}
  .nav{
    position:fixed; inset:0 0 auto 0; top:64px; flex-direction:column; align-items:flex-start; gap:0;
    background:var(--white); padding:10px 32px 24px; box-shadow:0 12px 24px rgba(0,0,0,0.12);
    max-height:0; overflow:hidden; transition:max-height .25s ease; z-index:60;
  }
  .nav.open{max-height:400px; padding-top:18px;}
  .nav a{color:var(--carbon-soft) !important; padding:12px 0; width:100%; border-bottom:1px solid var(--sand-dark);}
  .nav a:last-child{border-bottom:none;}
  .site-header{padding:16px 20px;}
}