/* =========================================================
   ADSSA · Landing SUNMI V3
   Paleta y tipografía tomadas del sitio actual adssa.mx
   ========================================================= */

:root{
  --tinta:#16181a;
  --grafito:#26282b;
  --acero:#3a3d42;
  --humo:#9aa0a6;
  --linea:#e4e4e4;
  --papel:#ffffff;
  --papel-2:#f7f5f1;
  --marca:#f7901e;
  --marca-oscuro:#e07c0c;
  --ok:#5aa832;

  --fuente:'Mulish',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --dato:ui-monospace,SFMono-Regular,'SF Mono',Menlo,Consolas,monospace;

  --ancho:1180px;
  --nav-h:64px;
  --rail-h:52px;
  --r:14px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--fuente);
  color:var(--grafito);
  background:var(--papel);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{max-width:100%;display:block;}
a{color:inherit;}

.contenedor{width:100%;max-width:var(--ancho);margin:0 auto;padding:0 20px;}

/* ---------- tipografía ---------- */
.eyebrow{
  font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;
  color:var(--marca);margin:0 0 14px;
}
.titulo{
  font-size:clamp(28px,5.2vw,52px);font-weight:900;line-height:1.08;
  letter-spacing:-.02em;margin:0 0 16px;
}
.subtitulo{
  font-size:clamp(16px,2.2vw,19px);color:var(--acero);margin:0 auto;max-width:64ch;
}
.seccion{padding:clamp(56px,9vw,104px) 0;}
.seccion--oscura{background:var(--tinta);color:#fff;}
.seccion--oscura + .seccion--oscura{padding-top:clamp(24px,4vw,48px);}
.seccion--oscura .subtitulo{color:#b9bdc2;}
.seccion--crema{background:var(--papel-2);}
.cabecera-seccion{text-align:center;margin-bottom:clamp(32px,5vw,56px);}

/* ---------- botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  font-family:var(--fuente);font-size:15px;font-weight:800;text-decoration:none;
  cursor:pointer;transition:background .18s,color .18s,border-color .18s,transform .18s;
}
.btn:hover{transform:translateY(-1px);}
.btn--marca{background:var(--marca);color:#fff;}
.btn--marca:hover{background:var(--marca-oscuro);}
.btn--fantasma{border-color:rgba(255,255,255,.35);color:#fff;}
.btn--fantasma:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.btn--linea{border-color:var(--linea);color:var(--grafito);background:#fff;}
.btn--linea:hover{border-color:var(--grafito);}
:focus-visible{outline:3px solid var(--marca);outline-offset:3px;}

/* ---------- navegación ---------- */
.nav{
  position:sticky;top:0;z-index:60;height:var(--nav-h);
  background:rgba(22,24,26,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav__in{display:flex;align-items:center;gap:20px;height:var(--nav-h);}
.nav__marca{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:#fff;}
.nav__logo{font-weight:900;font-size:20px;letter-spacing:-.02em;}
.nav__logo span{color:var(--marca);}
.nav__producto{font-size:13px;color:var(--humo);font-weight:600;}
.nav__links{display:none;margin-left:auto;gap:24px;}
.nav__links a{color:#cfd2d6;text-decoration:none;font-size:14px;font-weight:600;}
.nav__links a:hover{color:#fff;}
.nav__cta{margin-left:auto;padding:9px 18px;font-size:14px;}
@media(min-width:960px){
  .nav__links{display:flex;}
  .nav__cta{margin-left:0;}
}

/* ---------- hero ---------- */
.hero{background:var(--tinta);color:#fff;padding:clamp(48px,7vw,84px) 0 0;overflow:hidden;}
.hero__texto{text-align:center;max-width:760px;margin:0 auto;}
.hero__titulo{font-size:clamp(36px,7.5vw,72px);font-weight:900;letter-spacing:-.03em;line-height:1;margin:0 0 18px;}
.hero__titulo small{display:block;font-size:clamp(13px,1.8vw,15px);font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--marca);margin-bottom:14px;}
.hero__sub{font-size:clamp(16px,2.4vw,21px);color:#cfd2d6;margin:0 0 28px;}
.hero__acciones{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.hero__medio{margin-top:clamp(32px,5vw,56px);}
.hero__insignias{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
  margin-top:28px;padding-bottom:clamp(40px,6vw,64px);
}
.insignia{
  display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);font-size:13px;font-weight:700;color:#cfd2d6;
}
.insignia b{color:#fff;font-weight:800;}

/* ---------- riel de especificaciones (elemento firma) ---------- */
.rail{
  position:sticky;top:var(--nav-h);z-index:50;
  background:var(--grafito);border-bottom:1px solid rgba(255,255,255,.08);
}
.rail__pista{
  display:flex;gap:0;overflow-x:auto;scrollbar-width:none;
  height:var(--rail-h);align-items:stretch;
}
.rail__pista::-webkit-scrollbar{display:none;}
.rail__item{
  display:flex;align-items:center;gap:8px;white-space:nowrap;
  padding:0 18px;border-right:1px solid rgba(255,255,255,.08);
  font-family:var(--dato);font-size:12px;color:#9aa0a6;
  text-decoration:none;transition:color .2s,background .2s;
}
.rail__item:first-child{padding-left:0;}
.rail__item:last-child{border-right:none;}
.rail__item b{color:#fff;font-family:var(--fuente);font-weight:800;font-size:13px;}
.rail__item:hover{color:#fff;}
.rail__item.activo{background:rgba(247,144,30,.12);color:var(--marca);}
.rail__item.activo b{color:var(--marca);}

/* ---------- bloques alternados ---------- */
.duo{display:grid;gap:clamp(24px,4vw,56px);align-items:center;}
@media(min-width:900px){
  .duo{grid-template-columns:1fr 1fr;}
  .duo--invertido .duo__media{order:-1;}
}
.duo__titulo{font-size:clamp(24px,3.4vw,38px);font-weight:900;letter-spacing:-.02em;line-height:1.15;margin:0 0 14px;}
.duo__texto{font-size:16px;color:var(--acero);margin:0;}
.seccion--oscura .duo__texto{color:#b9bdc2;}
.duo + .duo{margin-top:clamp(48px,7vw,88px);}

/* ---------- cifras de rendimiento ---------- */
.cifras{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.1);border-radius:var(--r);overflow:hidden;}
@media(min-width:820px){.cifras{grid-template-columns:repeat(4,1fr);}}
.cifra{background:var(--tinta);padding:28px 20px;text-align:center;}
.cifra__valor{font-size:clamp(30px,4.6vw,46px);font-weight:900;letter-spacing:-.03em;color:var(--marca);line-height:1;}
.cifra__etiqueta{margin-top:10px;font-size:13px;color:#9aa0a6;font-weight:600;}
.nota{font-size:12px;color:var(--humo);margin-top:16px;text-align:center;}

/* ---------- rejilla de funciones ---------- */
.funciones{display:grid;gap:20px;grid-template-columns:1fr;}
@media(min-width:700px){.funciones{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1000px){.funciones{grid-template-columns:repeat(3,1fr);}}
.funcion{
  background:var(--papel);border:1px solid var(--linea);border-radius:var(--r);
  padding:26px;transition:border-color .2s,box-shadow .2s,transform .2s;
}
.funcion:hover{border-color:var(--marca);box-shadow:0 12px 28px rgba(22,24,26,.08);transform:translateY(-2px);}
.funcion__icono{
  width:44px;height:44px;border-radius:12px;background:#fbf0e1;color:var(--marca-oscuro);
  display:grid;place-items:center;font-size:20px;font-weight:900;margin-bottom:16px;
}
.funcion__titulo{font-size:18px;font-weight:800;margin:0 0 8px;}
.funcion__texto{font-size:15px;color:var(--acero);margin:0;}
.funcion__lista{margin:12px 0 0;padding-left:18px;font-size:14px;color:var(--acero);}

/* ---------- carrusel ---------- */
.carrusel{position:relative;}
.carrusel__pista{
  display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:8px;scrollbar-width:none;
}
.carrusel__pista::-webkit-scrollbar{display:none;}
.tarjeta{
  flex:0 0 84%;scroll-snap-align:start;background:var(--papel);
  border:1px solid var(--linea);border-radius:var(--r);overflow:hidden;
}
@media(min-width:760px){.tarjeta{flex-basis:46%;}}
@media(min-width:1060px){.tarjeta{flex-basis:31%;}}
.tarjeta .ph{border-radius:0;}
.tarjeta__cuerpo{padding:22px;}
.tarjeta__titulo{font-size:17px;font-weight:800;margin:0 0 8px;}
.tarjeta__texto{font-size:15px;color:var(--acero);margin:0;}
.tarjeta__pie{margin-top:14px;font-family:var(--dato);font-size:12px;color:var(--marca-oscuro);}
.carrusel__controles{display:flex;gap:10px;justify-content:flex-end;margin-top:18px;}
.carrusel__btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--linea);background:#fff;
  font-size:18px;cursor:pointer;color:var(--grafito);transition:border-color .2s,background .2s;
}
.carrusel__btn:hover{border-color:var(--grafito);}
.carrusel__btn[disabled]{opacity:.35;cursor:default;}

/* ---------- bloque integración ADSSA ---------- */
.adssa{background:linear-gradient(180deg,#26282b 0%,#16181a 100%);color:#fff;}
.adssa__grid{display:grid;gap:18px;grid-template-columns:1fr;margin-top:36px;}
@media(min-width:760px){.adssa__grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1040px){.adssa__grid{grid-template-columns:repeat(3,1fr);}}
.modulo{
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:24px;
  background:rgba(255,255,255,.03);
}
.modulo__etiqueta{font-family:var(--dato);font-size:11px;color:var(--marca);letter-spacing:.08em;text-transform:uppercase;}
.modulo__titulo{font-size:18px;font-weight:800;margin:10px 0 8px;}
.modulo__texto{font-size:15px;color:#b9bdc2;margin:0;}
.check{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:#cfd2d6;margin-top:10px;}
.check::before{content:"✓";color:var(--ok);font-weight:900;}

/* ---------- accesorios ---------- */
.accesorios{display:grid;gap:18px;grid-template-columns:repeat(2,1fr);}
@media(min-width:900px){.accesorios{grid-template-columns:repeat(4,1fr);}}
.accesorio{text-align:center;}
.accesorio__nombre{font-weight:800;margin:14px 0 4px;font-size:16px;}
.accesorio__estado{font-size:13px;color:var(--humo);}

/* ---------- ficha técnica ---------- */
.ficha{width:100%;border-collapse:collapse;font-size:15px;}
.ficha th,.ficha td{text-align:left;padding:14px 12px;border-bottom:1px solid var(--linea);vertical-align:top;}
.ficha th{width:34%;font-weight:800;color:var(--grafito);}
.ficha td{color:var(--acero);}
.ficha tr:hover{background:#fff;}

/* ---------- cotización ---------- */
.cotiza{display:grid;gap:32px;grid-template-columns:1fr;}
@media(min-width:920px){.cotiza{grid-template-columns:1fr 1fr;gap:56px;}}
.contacto__item{display:flex;gap:14px;margin-top:20px;align-items:flex-start;}
.contacto__icono{
  width:38px;height:38px;border-radius:10px;background:rgba(247,144,30,.14);
  color:var(--marca);display:grid;place-items:center;flex:none;font-size:16px;
}
.contacto__dato{font-weight:800;font-size:16px;}
.contacto__pie{font-size:14px;color:var(--humo);}
.campo{margin-bottom:16px;}
.campo label{display:block;font-size:13px;font-weight:800;margin-bottom:6px;}
.campo input,.campo select,.campo textarea{
  width:100%;padding:12px 14px;border:1px solid var(--linea);border-radius:10px;
  font-family:var(--fuente);font-size:15px;background:#fff;color:var(--grafito);
}
.campo input:focus,.campo select:focus,.campo textarea:focus{border-color:var(--marca);outline:none;box-shadow:0 0 0 3px rgba(247,144,30,.18);}
.campo--par{display:grid;gap:16px;grid-template-columns:1fr;}
@media(min-width:560px){.campo--par{grid-template-columns:1fr 1fr;}}
.trampa{position:absolute;left:-9999px;}
.aviso{padding:14px 16px;border-radius:10px;font-size:14px;font-weight:700;margin-bottom:18px;}
.aviso--ok{background:#eef7e8;color:#3f7d1f;border:1px solid #cfe6bd;}
.aviso--error{background:#fdecec;color:#a83232;border:1px solid #f3c9c9;}

/* ---------- pie ---------- */
.pie{background:var(--tinta);color:#9aa0a6;padding:44px 0;font-size:14px;}
.pie a{color:#cfd2d6;}
.pie__legal{margin-top:18px;font-size:12px;line-height:1.7;color:#6b7077;}

/* ---------- video de producto ---------- */
.media-video{width:100%;border-radius:var(--r);display:block;background:#000;}

/* ---------- marcador de material pendiente ---------- */
.ph{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:6px;border:2px dashed rgba(247,144,30,.55);border-radius:var(--r);
  background:repeating-linear-gradient(45deg,rgba(247,144,30,.05) 0 12px,transparent 12px 24px);
  color:var(--marca);text-align:center;padding:24px 16px;min-height:180px;
}
.ph__nombre{font-family:var(--dato);font-size:12px;word-break:break-all;}
.ph__medida{font-size:11px;color:var(--humo);font-family:var(--dato);}
.ph__nota{font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;}

/* ---------- animación de entrada ---------- */
.revela{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.revela.visible{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .revela{opacity:1;transform:none;transition:none;}
  .btn:hover,.funcion:hover{transform:none;}
}