/* ============================================================
   PPSA · Sistema de diseño web
   Marino #1A1A66 · Eléctrico #303084 · Plata #C8CCD6
   Tipografías: Montserrat (display) · IBM Plex Sans (texto) · IBM Plex Mono (etiquetas)
   ============================================================ */
:root{
  --marino:#1A1A66; --marino-deep:#0E0E3A; --marino-2:#13134D;
  --electrico:#303084; --electrico-2:#4A4AA8;
  --plata:#C8CCD6; --plata-lt:#EEF0F5; --plata-2:#9FA6BC;
  --grafito:#1C1F2A; --blanco:#FFFFFF;
  --arca-rojo:#F01020; --arca-negro:#0D0D0F;
  --wa:#25D366;
  --font-d:'Montserrat',system-ui,sans-serif;
  --font-b:'IBM Plex Sans',system-ui,sans-serif;
  --font-m:'IBM Plex Mono',ui-monospace,monospace;
  --rail:64px;
  --maxw:1180px;
  --r:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-b); color:var(--grafito); background:var(--marino-deep);
  -webkit-font-smoothing:antialiased; overflow-x:hidden; line-height:1.6;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--font-d);line-height:1.08;letter-spacing:-.015em}
.mono{font-family:var(--font-m)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Canvas 3D fijo ---------- */
#scene{position:fixed;inset:0;z-index:0;pointer-events:none}
#bgGrad{position:fixed;inset:0;z-index:-1;
  background:
    radial-gradient(120% 90% at 75% 0%, #23237A 0%, transparent 55%),
    radial-gradient(100% 80% at 10% 100%, #10104A 0%, transparent 60%),
    linear-gradient(180deg,#0E0E3A 0%, #12124A 50%, #0E0E3A 100%);
}
main{position:relative;z-index:1}

/* ---------- Progress rail (firma) ---------- */
#rail{position:fixed;left:0;top:0;bottom:0;width:var(--rail);z-index:40;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;
  pointer-events:none}
#rail .line{position:absolute;top:96px;bottom:96px;width:2px;background:rgba(200,204,214,.18);border-radius:2px}
#rail .fill{position:absolute;top:96px;width:2px;background:linear-gradient(180deg,var(--plata),#fff);border-radius:2px;height:0;box-shadow:0 0 10px rgba(255,255,255,.5)}
#rail .dot{position:relative;width:10px;height:10px;border-radius:50%;
  background:rgba(200,204,214,.25);margin:26px 0;transition:.3s;z-index:2}
#rail .dot.on{background:#fff;box-shadow:0 0 0 5px rgba(255,255,255,.15),0 0 14px rgba(255,255,255,.6)}
#railLabel{position:fixed;left:calc(var(--rail) - 10px);bottom:40px;z-index:40;
  font-family:var(--font-m);font-size:10px;letter-spacing:.22em;color:var(--plata);
  writing-mode:vertical-rl;transform:rotate(180deg);opacity:.85;pointer-events:none}

/* ---------- Nav ---------- */
nav{position:fixed;top:0;left:0;right:0;z-index:50;
  padding:14px 28px;display:flex;align-items:center;gap:26px;
  transition:background .35s,backdrop-filter .35s,padding .35s}
nav.solid{background:rgba(14,14,58,.82);backdrop-filter:blur(14px);padding:10px 28px;border-bottom:1px solid rgba(200,204,214,.12)}
nav .brand img{height:40px}
nav .links{display:flex;gap:22px;margin-left:auto;align-items:center}
nav .links a{color:var(--plata-lt);text-decoration:none;font-size:13.5px;font-weight:500;opacity:.9;transition:.2s}
nav .links a:hover{opacity:1;color:#fff}
nav .cta{background:#fff;color:var(--marino);font-family:var(--font-d);font-weight:700;font-size:12.5px;
  padding:10px 18px;border-radius:26px;text-decoration:none;transition:.25s;white-space:nowrap}
nav .cta:hover{transform:translateY(-1px);box-shadow:0 10px 26px -10px rgba(255,255,255,.5)}
#shareBtn{background:transparent;border:1px solid rgba(200,204,214,.4);color:var(--plata-lt);
  width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:15px;display:flex;align-items:center;justify-content:center;transition:.2s}
#shareBtn:hover{border-color:#fff;color:#fff}
#menuBtn{display:none;background:none;border:none;color:#fff;font-size:26px;cursor:pointer;margin-left:auto}

/* ---------- Hero ---------- */
.hero{min-height:100vh;display:flex;align-items:center;padding:120px 0 80px;position:relative}
.hero-inner{max-width:640px;margin-left:calc(var(--rail) + 4vw);padding:0 24px}
.eyebrow{font-family:var(--font-m);font-size:11px;letter-spacing:.3em;text-transform:uppercase;color:var(--plata);margin-bottom:18px}
.hero h1{font-size:clamp(34px,5.2vw,60px);font-weight:800;color:#fff;text-wrap:balance}
.hero .sub{margin-top:20px;font-size:16.5px;color:#C9CDE2;font-weight:300;max-width:54ch}
.hero .ctas{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-d);font-weight:700;font-size:14px;
  padding:15px 26px;border-radius:32px;text-decoration:none;cursor:pointer;border:none;transition:.25s}
.btn-primary{background:#fff;color:var(--marino)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 36px -12px rgba(255,255,255,.55)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn .wa-ic{width:19px;height:19px}
.hero .kpis{display:flex;gap:30px;margin-top:44px;flex-wrap:wrap}
.kpi{border-left:2px solid var(--electrico-2);padding-left:14px}
.kpi b{display:block;font-family:var(--font-d);font-weight:800;font-size:22px;color:#fff}
.kpi span{font-size:11px;color:var(--plata);letter-spacing:.06em;text-transform:uppercase}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:var(--plata);font-family:var(--font-m);font-size:10px;letter-spacing:.25em;text-transform:uppercase;opacity:.7;animation:hint 2.4s ease-in-out infinite}
@keyframes hint{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ---------- Resumen (TL;DR) ---------- */
.resumen{padding:10px 0 40px}
.resumen .box{margin-left:calc(var(--rail));
  background:rgba(255,255,255,.05);border:1px solid rgba(200,204,214,.16);border-radius:var(--r);
  backdrop-filter:blur(8px);padding:22px 26px;max-width:720px}
.resumen .t{font-family:var(--font-m);font-size:10.5px;letter-spacing:.24em;color:var(--plata);text-transform:uppercase;margin-bottom:12px}
.resumen ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.resumen li{color:#DDE0EE;font-size:14px;padding-left:22px;position:relative}
.resumen li::before{content:"";position:absolute;left:0;top:8px;width:10px;height:2px;background:var(--plata)}

/* ---------- Proceso (scroll story) ---------- */
.proceso{position:relative;padding:60px 0 40px}
.stage{min-height:92vh;display:flex;align-items:center}
.stage-card{margin-left:calc(var(--rail) + 3vw);max-width:430px;
  background:rgba(10,10,40,.62);border:1px solid rgba(200,204,214,.18);border-radius:var(--r);
  backdrop-filter:blur(12px);padding:30px 32px;opacity:0;transform:translateY(30px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.stage.in .stage-card{opacity:1;transform:none}
.stage-card .et{font-family:var(--font-m);font-size:10.5px;letter-spacing:.24em;color:var(--plata);text-transform:uppercase}
.stage-card h3{font-size:25px;color:#fff;margin-top:10px;font-weight:700}
.stage-card p{color:#C9CDE2;font-size:14px;margin-top:12px;font-weight:300}
.stage:nth-child(even) .stage-card{margin-left:auto;margin-right:6vw}

/* ---------- Superficie clara ---------- */
.light{background:var(--plata-lt);border-radius:34px 34px 0 0;box-shadow:0 -30px 80px rgba(0,0,0,.35);position:relative;z-index:2}
.sect{padding:90px 0}
.sect-head{max-width:640px;margin-bottom:46px}
.sect-head .eyebrow{color:var(--electrico)}
.sect-head h2{font-size:clamp(28px,3.6vw,40px);color:var(--marino);font-weight:800}
.sect-head p{color:#4A4E5C;margin-top:14px;font-size:15.5px}

/* Servicios */
.serv-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.serv{background:#fff;border:1px solid #E2E5EE;border-radius:var(--r);padding:28px;transition:.3s;position:relative;overflow:hidden}
.serv:hover{transform:translateY(-5px);box-shadow:0 22px 44px -22px rgba(26,26,102,.35);border-color:var(--electrico)}
.serv .ic{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--marino),var(--electrico));display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.serv .ic svg{width:26px;height:26px;stroke:#fff;fill:none;stroke-width:1.6}
.serv h3{font-size:17px;color:var(--marino);font-weight:700}
.serv p{font-size:13.5px;color:#4A4E5C;margin-top:9px}

/* Tabla comparativa */
.tabla-comp{margin-top:44px;background:#fff;border:1px solid #E2E5EE;border-radius:var(--r);overflow:hidden}
.tabla-comp table{width:100%;border-collapse:collapse;font-size:14px}
.tabla-comp th{background:var(--marino);color:#fff;font-family:var(--font-d);font-weight:600;text-align:left;padding:14px 18px;font-size:13px}
.tabla-comp td{padding:13px 18px;border-bottom:1px solid #EDEFF5;color:#3A3E4C}
.tabla-comp tr:last-child td{border-bottom:none}
.tabla-comp td:first-child{font-weight:600;color:var(--marino);font-family:var(--font-d);font-size:13px}

/* Productos */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.prod{background:#fff;border:1px solid #E2E5EE;border-radius:var(--r);overflow:hidden;transition:.3s}
.prod:hover{transform:translateY(-5px);box-shadow:0 22px 44px -22px rgba(26,26,102,.35)}
.prod .ph{aspect-ratio:4/3;background:linear-gradient(150deg,#1A1A66,#303084);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.prod .ph img{width:100%;height:100%;object-fit:cover}
.prod .ph .placeholder{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--plata)}
.prod .ph .placeholder svg{width:54px;height:54px;stroke:var(--plata);fill:none;stroke-width:1.2;opacity:.9}
.prod .ph .placeholder span{font-family:var(--font-m);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase}
.prod .bd{padding:20px 22px}
.prod h3{font-size:16.5px;color:var(--marino);font-weight:700}
.prod p{font-size:13.5px;color:#4A4E5C;margin-top:8px}

/* Diseña tu producto */
.disena{background:linear-gradient(150deg,var(--marino),var(--marino-2));border-radius:24px;padding:52px;color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;position:relative;overflow:hidden}
.disena::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;right:-80px;top:-80px;background:radial-gradient(circle at 35% 30%,rgba(255,255,255,.16),transparent)}
.disena h2{font-size:clamp(26px,3vw,34px);font-weight:800}
.disena .dtxt{color:#C9CDE2;margin-top:14px;font-size:15px;font-weight:300}
.disena form{position:relative;z-index:2;display:flex;flex-direction:column;gap:14px}
.disena label{font-family:var(--font-m);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--plata)}
.disena input[type=text],.disena textarea{background:rgba(255,255,255,.08);border:1px solid rgba(200,204,214,.3);border-radius:10px;padding:13px 15px;color:#fff;font-family:var(--font-b);font-size:14px;outline:none;transition:.2s;width:100%}
.disena input:focus,.disena textarea:focus{border-color:#fff;background:rgba(255,255,255,.12)}
.disena textarea{min-height:88px;resize:vertical}
.upload{border:1.5px dashed rgba(200,204,214,.45);border-radius:12px;padding:18px;text-align:center;cursor:pointer;transition:.25s;position:relative}
.upload:hover{border-color:#fff;background:rgba(255,255,255,.05)}
.upload input{position:absolute;inset:0;opacity:0;cursor:pointer}
.upload .u-txt{font-size:13px;color:var(--plata-lt)}
.upload .u-sub{font-size:11px;color:var(--plata);margin-top:4px}
.upload img.preview{max-height:120px;margin:0 auto 10px;border-radius:8px}
.disena .btn-primary{justify-content:center}

/* Galería */
.gal-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}
.gal-item{aspect-ratio:16/10;border-radius:var(--r);overflow:hidden;background:linear-gradient(150deg,#E4E7F0,#D5D9E6);display:flex;align-items:center;justify-content:center;position:relative;border:1px solid #E2E5EE}
.gal-item img,.gal-item video{width:100%;height:100%;object-fit:cover}
.gal-item .placeholder{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--plata-2)}
.gal-item .placeholder svg{width:44px;height:44px;stroke:var(--plata-2);fill:none;stroke-width:1.3}
.gal-item .placeholder span{font-family:var(--font-m);font-size:9.5px;letter-spacing:.18em;text-transform:uppercase}

/* ARCA */
.arca{background:var(--arca-negro);color:#fff;padding:90px 0;position:relative;overflow:hidden}
.arca::before{content:"";position:absolute;inset:0;background:
  repeating-linear-gradient(135deg,transparent 0 26px,rgba(240,16,32,.05) 26px 27px)}
.arca .wrap{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.arca img.logo{width:min(320px,80%)}
.arca .tag{display:inline-block;font-family:var(--font-m);font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--arca-rojo);border:1px solid rgba(240,16,32,.45);padding:6px 13px;border-radius:20px}
.arca h2{font-size:clamp(26px,3.2vw,36px);margin-top:18px;font-weight:800}
.arca p{color:#B9BBC4;margin-top:14px;font-size:15px;font-weight:300}
.arca ul{list-style:none;margin-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:12px}
.arca li{font-size:13.5px;color:#E4E5EA;padding-left:22px;position:relative}
.arca li::before{content:"";position:absolute;left:0;top:7px;width:10px;height:2px;background:var(--arca-rojo)}
.arca .nota{margin-top:26px;font-size:12px;color:#8A8C96;border-left:2px solid var(--arca-rojo);padding-left:14px}

/* FAQ */
.faq-list{max-width:780px}
.faq-item{background:#fff;border:1px solid #E2E5EE;border-radius:14px;margin-bottom:12px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:19px 22px;font-family:var(--font-d);font-weight:600;font-size:15px;color:var(--marino);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--electrico);transition:.3s;flex-shrink:0}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .a{padding:0 22px 20px;color:#4A4E5C;font-size:14px}

/* Contacto / footer */
.contact{background:var(--marino-deep);color:#fff;padding:80px 0 0;border-radius:34px 34px 0 0}
.contact .grid{display:grid;grid-template-columns:1.2fr 1fr;gap:56px}
.contact h2{font-size:clamp(26px,3.2vw,36px);font-weight:800}
.contact .sub{color:#C9CDE2;margin-top:12px;font-weight:300;font-size:15px}
.c-rows{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.c-row{display:flex;gap:14px;align-items:flex-start;font-size:14px;color:#DDE0EE}
.c-row .lbl{font-family:var(--font-m);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--plata);min-width:92px;padding-top:3px}
.socials{display:flex;gap:12px;margin-top:30px}
.soc{width:44px;height:44px;border-radius:50%;border:1px solid rgba(200,204,214,.35);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.25s;background:transparent}
.soc svg{width:19px;height:19px;fill:var(--plata-lt)}
.soc:hover{border-color:#fff;transform:translateY(-2px)}
.soc.off{opacity:.45}
footer{margin-top:64px;border-top:1px solid rgba(200,204,214,.14);padding:26px 0;display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
footer img{height:34px}
footer p{font-size:11.5px;color:var(--plata-2)}

/* Sticky CTA móvil */
#stickyCta{position:fixed;left:0;right:0;bottom:0;z-index:60;display:none;
  background:rgba(14,14,58,.92);backdrop-filter:blur(12px);border-top:1px solid rgba(200,204,214,.18);
  padding:10px 14px;gap:10px}
#stickyCta a{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-d);font-weight:700;font-size:13px;padding:12px;border-radius:12px;text-decoration:none}
#stickyCta .wa{background:#fff;color:var(--marino)}
#stickyCta .tel{border:1px solid rgba(255,255,255,.4);color:#fff}

/* Toast */
#toast{position:fixed;bottom:90px;left:50%;transform:translate(-50%,20px);z-index:80;
  background:var(--grafito);color:#fff;font-size:13px;padding:12px 20px;border-radius:30px;
  opacity:0;pointer-events:none;transition:.35s;max-width:90vw;text-align:center}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* Reveal genérico */
.rv{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  :root{--rail:0px}
  #rail,#railLabel{display:none}
  nav .links{display:none}
  nav .links.open{display:flex;position:fixed;top:60px;left:0;right:0;flex-direction:column;
    background:rgba(14,14,58,.97);padding:22px;gap:18px;border-bottom:1px solid rgba(200,204,214,.15)}
  #menuBtn{display:block}
  .hero-inner{margin-left:0}
  .resumen .box{margin-left:0}
  .stage-card{margin:0 20px !important;max-width:none}
  .disena{grid-template-columns:1fr;padding:34px 26px}
  .arca .wrap{grid-template-columns:1fr;gap:34px}
  .contact .grid{grid-template-columns:1fr}
  #stickyCta{display:flex}
  body{padding-bottom:64px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  #scene{display:none}
}