/* ============================================================
   3D OSOS — Hoja de estilos de la landing
   Tokens oficiales del Kit de Marca:
   negro #191A1C · naranja #E54A13 · crema #F9F5E4 · azul #456C7F
   Tipografía: Refrigerator Deluxe (títulos) + Comrade Bold (cuerpo)
   ============================================================ */
@font-face{
  font-family:'Refrigerator Deluxe';
  src:url('../assets/fonts/RefrigeratorDeluxe-Regular.ttf') format('truetype');
  font-weight:400 600;font-display:swap;
}
@font-face{
  font-family:'Refrigerator Deluxe';
  src:url('../assets/fonts/RefrigeratorDeluxe-Bold.ttf') format('truetype');
  font-weight:700 900;font-display:swap;
}
@font-face{
  font-family:'Comrade';
  src:url('../assets/fonts/Comrade-Bold.ttf') format('truetype');
  font-weight:400 700;font-display:swap;
}
:root{
  --ink:#191A1C;          /* negro de marca */
  --ink-soft:#26282A;
  --orange:#E54A13;       /* naranja quemado de marca */
  --orange-dark:#C53E0F;
  --cream:#F9F5E4;        /* crema de marca (fondo base) */
  --paper:#FCFAF0;        /* superficie de tarjetas */
  --slate:#456C7F;        /* azul pizarra de marca (acento secundario) */
  --line:rgba(25,26,28,.14);
  --line-light:rgba(249,245,228,.18);
  --shadow-sm:0 2px 8px rgba(25,26,28,.07);
  --shadow-md:0 10px 30px rgba(25,26,28,.10);
  --shadow-lg:0 18px 50px rgba(25,26,28,.16);
  --r-card:18px;
  --r-chip:999px;
  --font-display:'Comrade',system-ui,sans-serif;
  --font-body:'Refrigerator Deluxe',system-ui,sans-serif;
  --font-mark:'Comrade',system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:18px}
body{
  font-family:var(--font-body);
  background:var(--cream);
  color:var(--ink);
  line-height:1.65;
  font-size:1.12rem;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:inherit}

/* ---- Retícula técnica sutil sobre el fondo ---- */
.grid-bg{
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:48px 48px;
}
.grid-bg-dark{
  background-image:
    linear-gradient(var(--line-light) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-light) 1px,transparent 1px);
  background-size:48px 48px;
}

/* ---- Layout ---- */
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
section{padding:72px 0}
@media(min-width:768px){section{padding:104px 0}}

/* ---- Tipografía ---- */
h1,h2,h3{font-family:var(--font-display);line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(1.45rem,3.4vw,2.15rem);font-weight:700}
h2{font-size:clamp(1.2rem,2.4vw,1.65rem);font-weight:700}
h3{font-size:1.15rem;font-weight:600}
.kicker{
  font-family:var(--font-display);
  font-size:.8rem;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--orange);
  display:flex;align-items:center;gap:10px;
  margin-bottom:14px;
}
.kicker::before{content:"";width:26px;height:2px;background:var(--orange)}
.lead{font-size:1.2rem;color:rgba(23,25,27,.78);max-width:62ch}
.dark .lead{color:rgba(245,240,226,.78)}

/* ---- Secciones oscuras ---- */
.dark{background:var(--ink);color:var(--cream)}
.dark h2,.dark h3{color:var(--cream)}

/* ---- Botones ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--font-display);font-weight:600;font-size:1rem;
  padding:15px 26px;border-radius:12px;border:2px solid transparent;
  text-decoration:none;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s;
  min-height:52px;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{background:var(--orange-dark);box-shadow:var(--shadow-lg)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:var(--cream)}
.dark .btn-outline{color:var(--cream);border-color:var(--cream)}
.dark .btn-outline:hover{background:var(--cream);color:var(--ink)}
.btn img,.btn svg{flex:none}
.btn .ico{width:20px;height:20px}

/* ---- Header ---- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(245,240,226,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:84px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo-mark{width:auto;height:54px}
.logo-word{width:auto;height:34px}
.logo-text{font-family:var(--font-mark);font-size:.95rem;letter-spacing:.02em}
.nav-links{display:none;gap:28px;list-style:none}
.nav-links a{
  text-decoration:none;font-family:var(--font-display);
  font-size:.8rem;font-weight:600;letter-spacing:.03em;
  color:rgba(23,25,27,.78);transition:color .15s;
}
.nav-links a:hover{color:var(--orange)}
.nav .btn{padding:10px 18px;min-height:42px;font-size:.8rem}
@media(min-width:900px){.nav-links{display:flex}}

/* ---- Hero ---- */
.hero{padding:64px 0 80px;overflow:hidden}
.hero-grid{display:grid;gap:48px;align-items:center}
@media(min-width:920px){.hero-grid{grid-template-columns:1.05fr .95fr}}
.hero .lead{margin:20px 0 30px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:28px;
  font-size:.85rem;color:rgba(23,25,27,.65);
}
.hero-trust span{display:flex;align-items:center;gap:7px}
.hero-trust .diamond{width:10px;height:10px;transform:rotate(45deg);flex:none}
.d-orange{background:var(--orange)}
.d-slate{background:var(--slate)}
.d-ink{background:var(--ink)}

/* Visual del hero: tarjetas en capas con muestras de proyectos */
.hero-visual{position:relative;min-height:340px;display:none}
@media(min-width:920px){.hero-visual{display:block;min-height:460px}}
.hv-card{
  position:absolute;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-lg);padding:18px;
}
.hv-card .hv-label{
  font-family:var(--font-display);font-size:.72rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--slate);
  margin-top:10px;
}
.hv-1{width:54%;top:4%;left:0;transform:rotate(-2.5deg)}
.hv-2{width:46%;top:30%;right:0;transform:rotate(2deg);z-index:2}
.hv-3{width:42%;bottom:0;left:12%;transform:rotate(-1deg);z-index:3}
.hv-tag{
  position:absolute;z-index:4;
  font-family:var(--font-display);font-size:.74rem;font-weight:600;
  background:var(--ink);color:var(--cream);
  padding:7px 13px;border-radius:var(--r-chip);box-shadow:var(--shadow-md);
}
.hv-tag.t1{top:1%;right:6%}
.hv-tag.t2{bottom:26%;right:2%;background:var(--orange);color:#fff}
.hv-tag.t3{bottom:-3%;left:0;background:var(--slate);color:#fff}

/* Visual simplificado para móvil: una sola tarjeta */
.hero-visual-mobile{margin-top:36px}
@media(min-width:920px){.hero-visual-mobile{display:none}}
.hvm-card{
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-md);
  padding:18px;display:flex;align-items:center;gap:16px;
}
.hvm-card img{width:110px;flex:none}
.hvm-card p{font-size:.85rem;color:rgba(23,25,27,.7)}

/* ---- Chips de factores de cotización ---- */
.factors{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0}
.factor{
  font-family:var(--font-display);font-size:.86rem;font-weight:500;
  border:1px solid var(--line-light);border-radius:var(--r-chip);
  padding:9px 18px;color:rgba(245,240,226,.9);
  display:flex;align-items:center;gap:8px;
}
.factor::before{content:"";width:6px;height:6px;background:var(--orange);transform:rotate(45deg);flex:none}
.pullquote{
  border-left:4px solid var(--orange);
  padding:18px 0 18px 24px;margin-top:36px;
  font-family:var(--font-display);font-size:clamp(1.15rem,2.4vw,1.5rem);
  font-weight:600;line-height:1.4;max-width:34ch;
}

/* ---- Tarjetas genéricas ---- */
.card{
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-sm);
  padding:28px;transition:transform .18s,box-shadow .18s;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}

/* ---- Servicios (FDM / Resina) ---- */
.services-grid{display:grid;gap:22px;margin-top:42px}
@media(min-width:768px){.services-grid{grid-template-columns:1fr 1fr}}
.svc{padding:34px 30px;position:relative;overflow:hidden}
.svc-icon{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.svc-fdm .svc-icon{background:rgba(74,113,135,.14)}
.svc-resina .svc-icon{background:rgba(226,73,29,.12)}
.svc h3{font-size:1.4rem;margin-bottom:6px}
.svc .svc-sub{
  font-family:var(--font-display);font-size:.8rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px;
}
.svc-fdm .svc-sub{color:var(--slate)}
.svc-resina .svc-sub{color:var(--orange)}
.svc ul{list-style:none;margin:0 0 22px}
.svc li{
  padding:9px 0 9px 28px;position:relative;
  font-size:.95rem;color:rgba(23,25,27,.8);
  border-bottom:1px dashed var(--line);
}
.svc li:last-child{border-bottom:none}
.svc li::before{
  content:"";position:absolute;left:4px;top:17px;
  width:8px;height:8px;transform:rotate(45deg);
}
.svc-fdm li::before{background:var(--slate)}
.svc-resina li::before{background:var(--orange)}
.svc-note{font-size:.86rem;color:rgba(23,25,27,.6);font-style:italic}
.helper-banner{
  margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  justify-content:space-between;
  background:var(--ink);color:var(--cream);
  border-radius:var(--r-card);padding:24px 28px;box-shadow:var(--shadow-md);
}
.helper-banner p{font-family:var(--font-display);font-weight:600;font-size:1.05rem}
.helper-banner .btn{padding:11px 20px;min-height:44px;font-size:.9rem}

/* ---- Público objetivo ---- */
.users-grid{display:grid;gap:18px;margin-top:42px;grid-template-columns:1fr}
@media(min-width:640px){.users-grid{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.users-grid{grid-template-columns:repeat(3,1fr)}}
.user-card{padding:24px}
.user-card .uc-icon{
  width:44px;height:44px;border-radius:11px;background:rgba(23,25,27,.06);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.user-card h3{margin-bottom:8px;font-size:1.05rem}
.user-card p{font-size:.9rem;color:rgba(23,25,27,.72)}

/* ---- Proceso ---- */
.process-grid{display:grid;gap:18px;margin-top:46px}
@media(min-width:880px){.process-grid{grid-template-columns:repeat(4,1fr)}}
.step{position:relative;padding:28px 24px}
.step-num{
  font-family:var(--font-mark);font-size:1.5rem;color:var(--orange);
  margin-bottom:14px;display:flex;align-items:center;gap:12px;
}
.step-num::after{content:"";flex:1;height:2px;background:var(--line)}
.step h3{font-size:1.02rem;margin-bottom:8px}
.step p{font-size:.88rem;color:rgba(23,25,27,.72)}
.process-cta{text-align:center;margin-top:40px}

/* ---- Galería de proyectos entregados ---- */
.gallery-grid{display:grid;gap:20px;margin-top:42px;grid-template-columns:1fr}
@media(min-width:640px){.gallery-grid{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.gallery-grid{grid-template-columns:repeat(3,1fr)}}
.g-card{
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-sm);
  overflow:hidden;transition:transform .18s,box-shadow .18s;
}
.g-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.g-media{position:relative;aspect-ratio:4/3;background:var(--cream)}
.g-media img{width:100%;height:100%;object-fit:cover}
.g-tag{
  position:absolute;top:12px;left:12px;
  font-family:var(--font-display);font-size:.72rem;font-weight:600;
  letter-spacing:.08em;text-transform:uppercase;
  padding:5px 12px;border-radius:var(--r-chip);box-shadow:var(--shadow-sm);
}
.g-tag.fdm{background:var(--slate);color:#fff}
.g-tag.resina{background:var(--orange);color:#fff}
.g-tag.mixta{background:var(--ink);color:var(--cream)}
.g-card figcaption{padding:18px 20px 20px}
.g-card h3{font-size:1rem;margin-bottom:6px}
.g-card p{font-size:.86rem;color:rgba(23,25,27,.7)}
.gallery-note{
  margin-top:30px;font-size:.88rem;color:rgba(23,25,27,.6);
  text-align:center;
}

/* ---- Materiales ---- */
.mat-grid{display:grid;gap:22px;margin-top:42px}
@media(min-width:768px){.mat-grid{grid-template-columns:1fr 1fr}}
.mat-col h3{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.mat-col h3 .dot{width:12px;height:12px;transform:rotate(45deg);flex:none}
.dot-slate{background:var(--slate)}
.dot-orange{background:var(--orange)}
.mat-list{list-style:none}
.mat-list li{
  background:var(--paper);border:1px solid var(--line);border-radius:12px;
  padding:14px 18px;margin-bottom:10px;font-size:.94rem;
  display:flex;justify-content:space-between;align-items:baseline;gap:12px;
}
.mat-list li b{font-family:var(--font-display);font-weight:600}
.mat-list li span{font-size:.8rem;color:rgba(23,25,27,.55);text-align:right}
.formats{margin-top:38px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 28px}
.formats p{font-size:.95rem;margin-bottom:14px}
.format-chips{display:flex;flex-wrap:wrap;gap:10px}
.fchip{
  font-family:var(--font-mark);font-size:.78rem;
  border:2px solid var(--ink);border-radius:8px;padding:7px 14px;
}
.mat-disclaimer{margin-top:18px;font-size:.84rem;color:rgba(23,25,27,.6)}

/* ---- Calidad / guía técnica ---- */
.quality-grid{display:grid;gap:14px;margin-top:42px;grid-template-columns:1fr}
@media(min-width:640px){.quality-grid{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.quality-grid{grid-template-columns:repeat(3,1fr)}}
.q-item{
  border:1px solid var(--line-light);border-radius:14px;padding:20px 22px;
  background:rgba(245,240,226,.04);
}
.q-item h3{font-size:.98rem;margin-bottom:6px}
.q-item p{font-size:.86rem;color:rgba(245,240,226,.68)}

/* ---- Formulario ---- */
.form-wrap{display:grid;gap:40px;margin-top:42px}
@media(min-width:980px){.form-wrap{grid-template-columns:.85fr 1.15fr;align-items:start}}
.form-side p{margin-bottom:18px;font-size:.97rem;color:rgba(23,25,27,.78)}
.form-side .alt{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;margin-top:26px;
}
.form-side .alt h3{font-size:.95rem;margin-bottom:10px}
.form-side .alt a{color:var(--orange);font-weight:500}
.quote-form{
  background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow-md);padding:30px;
}
.f-row{display:grid;gap:16px;margin-bottom:16px}
@media(min-width:600px){.f-row.two{grid-template-columns:1fr 1fr}}
label{
  font-family:var(--font-display);font-size:.82rem;font-weight:600;
  letter-spacing:.04em;display:block;margin-bottom:6px;
}
label .req{color:var(--orange)}
input,select,textarea{
  width:100%;font-family:var(--font-body);font-size:.95rem;color:var(--ink);
  background:#fff;border:1.5px solid var(--line);border-radius:10px;
  padding:12px 14px;transition:border-color .15s,box-shadow .15s;
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(226,73,29,.15);
}
textarea{resize:vertical;min-height:90px}
.radio-chips{display:flex;flex-wrap:wrap;gap:10px}
.radio-chips input{position:absolute;opacity:0;width:0;height:0}
.radio-chips label{
  margin:0;cursor:pointer;border:1.5px solid var(--line);border-radius:var(--r-chip);
  padding:10px 20px;font-size:.88rem;background:#fff;transition:all .15s;
}
.radio-chips input:checked+label{
  background:var(--ink);color:var(--cream);border-color:var(--ink);
}
.radio-chips input:focus-visible+label{box-shadow:0 0 0 3px rgba(226,73,29,.3)}
.file-drop{
  border:2px dashed var(--line);border-radius:12px;padding:22px;text-align:center;
  font-size:.88rem;color:rgba(23,25,27,.6);cursor:pointer;transition:border-color .15s;
  background:#fff;display:block;
}
.file-drop:hover{border-color:var(--orange)}
.file-drop input{display:none}
.file-drop .fd-name{font-weight:500;color:var(--ink)}
.form-helpers{margin:18px 0 22px}
.form-helpers p{
  font-size:.83rem;color:rgba(23,25,27,.62);
  padding-left:20px;position:relative;margin-bottom:8px;
}
.form-helpers p::before{
  content:"";position:absolute;left:4px;top:8px;
  width:7px;height:7px;background:var(--orange);transform:rotate(45deg);
}
.form-actions{display:grid;gap:12px}
@media(min-width:600px){.form-actions{grid-template-columns:1fr 1fr}}
.form-note{margin-top:14px;font-size:.8rem;color:rgba(23,25,27,.55);text-align:center}

/* ---- FAQ ---- */
.faq-list{margin-top:42px;max-width:820px}
details{
  background:var(--paper);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
}
summary{
  font-family:var(--font-display);font-weight:600;font-size:1rem;
  padding:20px 56px 20px 24px;cursor:pointer;list-style:none;position:relative;
}
summary::-webkit-details-marker{display:none}
summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-family:var(--font-body);font-size:1.5rem;font-weight:400;color:var(--orange);
  transition:transform .2s;
}
details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
details .faq-body{padding:0 24px 22px;font-size:.94rem;color:rgba(23,25,27,.76)}

/* ---- CTA final ---- */
.final-cta{text-align:center}
.final-cta .cta-logo{width:56px;height:56px;margin:0 auto 24px}
.final-cta h2{font-size:clamp(1.33rem,2.8vw,1.87rem);max-width:24ch;margin:0 auto 18px}
.final-cta .lead{margin:0 auto 36px}
.final-cta .hero-ctas{justify-content:center}
.final-cta .mini{margin-top:26px;font-size:.85rem;color:rgba(245,240,226,.55)}

/* ---- Footer ---- */
footer{background:var(--ink);color:rgba(245,240,226,.65);border-top:1px solid var(--line-light)}
.foot{
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;
  padding:30px 0;font-size:.84rem;
}
.foot .logo-text{color:var(--cream);font-size:.8rem}
.foot a{color:rgba(245,240,226,.8);text-decoration:none}
.foot a:hover{color:var(--orange)}

/* ---- FAB de WhatsApp (móvil) ---- */
.wa-fab{
  position:fixed;right:18px;bottom:18px;z-index:60;
  width:58px;height:58px;border-radius:50%;
  background:var(--orange);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-lg);text-decoration:none;
  transition:transform .15s;
}
.wa-fab:hover{transform:scale(1.06)}
.wa-fab img{width:28px;height:28px}
@media(min-width:920px){.wa-fab{display:none}}

/* ---- Accesibilidad: reducir movimiento ---- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important}
}