/* ============================================================
   ROLLING BARCELONA - "Lamas de acero"
   Estilo propio de esta web. No se parece a las otras.
   ============================================================ */
:root{
  --grafito:#14161A; --acero:#20242B; --acero2:#2B313A;
  --hueso:#F2F3F5;   --humo:#9BA1AA;  --senal:#FF6A13; --senal2:#FF8A3D;
  --linea:rgba(255,255,255,.10);
  --tipo:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  --ancho:1180px; --radio:14px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--grafito);color:var(--hueso);font-family:var(--tipo);
  font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.envoltura{max-width:var(--ancho);margin:0 auto;padding:0 22px}

/* ---------- textura de lama, el sello de la casa ---------- */
.lamas{background-image:repeating-linear-gradient(180deg,
    rgba(255,255,255,.05) 0 1px, transparent 1px 9px)}

/* ---------- barra de progreso: una lama que avanza ---------- */
#progreso{position:fixed;top:0;left:0;height:3px;width:0;z-index:120;
  background:linear-gradient(90deg,var(--senal),var(--senal2));transition:width .1s linear}

/* ---------- cabecera ---------- */
.cab{position:sticky;top:0;z-index:100;background:rgba(20,22,26,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--linea)}
.cab-in{display:flex;align-items:center;gap:18px;height:68px}
.logo{display:flex;align-items:center;gap:11px;text-decoration:none;font-weight:800;
  letter-spacing:.5px;font-size:18px;white-space:nowrap}
.logo-marca{width:auto;height:34px;flex:0 0 auto;display:block;
  filter:drop-shadow(0 2px 6px rgba(0,0,0,.45))}
.nav{margin-left:auto;display:flex;gap:6px;align-items:center}
.nav a{text-decoration:none;color:var(--humo);font-size:15px;font-weight:600;
  padding:9px 13px;border-radius:9px;transition:color .2s,background .2s}
.nav a:hover,.nav a[aria-current=page]{color:var(--hueso);background:rgba(255,255,255,.06)}
.cab-tel{display:inline-flex;align-items:center;gap:8px;background:var(--senal);color:#12140F;
  font-weight:800;padding:10px 17px;border-radius:999px;text-decoration:none;white-space:nowrap;
  transition:transform .2s,box-shadow .2s}
.cab-tel:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,106,19,.35)}
.hamb{display:none;margin-left:auto;background:none;border:1px solid var(--linea);
  border-radius:9px;width:44px;height:40px;cursor:pointer;padding:0}
.hamb span{display:block;width:20px;height:2px;background:var(--hueso);margin:4px auto;
  transition:transform .25s,opacity .25s}
.hamb[aria-expanded=true] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamb[aria-expanded=true] span:nth-child(2){opacity:0}
.hamb[aria-expanded=true] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- portada: la persiana que sube ---------- */
.hero{position:relative;min-height:clamp(520px,74vh,700px);display:flex;align-items:center;
  overflow:hidden;border-bottom:1px solid var(--linea)}
.hero-foto{position:absolute;inset:0;background-size:cover;background-position:center;
  filter:saturate(.85) contrast(1.05)}
.hero-foto::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,22,26,.96) 0%,rgba(20,22,26,.86) 45%,rgba(20,22,26,.55) 100%)}
/* la cortina de lamas que se levanta al cargar */
#cortina{position:absolute;inset:0;z-index:3;pointer-events:none;display:flex;flex-direction:column}
#cortina i{flex:1;background:var(--acero);border-bottom:1px solid rgba(0,0,0,.5);
  transform-origin:top;animation:subeLama .75s cubic-bezier(.7,0,.3,1) forwards}
@keyframes subeLama{to{transform:scaleY(0)}}
.hero-in{position:relative;z-index:4;padding:72px 0}
.antetitulo{display:inline-flex;align-items:center;gap:9px;color:var(--senal);font-weight:800;
  font-size:12.5px;letter-spacing:2.6px;text-transform:uppercase;margin:0 0 16px}
.antetitulo::before{content:"";width:26px;height:2px;background:var(--senal)}
.hero h1{font-size:clamp(31px,5.4vw,58px);line-height:1.06;margin:0 0 18px;font-weight:800;
  letter-spacing:-.5px;max-width:16ch}
.hero p.entradilla{font-size:clamp(16px,1.9vw,19px);color:#C9CED5;max-width:56ch;margin:0 0 30px}
.botones{display:flex;flex-wrap:wrap;gap:13px}
.btn{display:inline-flex;align-items:center;gap:9px;padding:15px 27px;border-radius:999px;
  text-decoration:none;font-weight:800;font-size:16px;transition:transform .22s,box-shadow .22s,background .22s}
.btn-1{background:var(--senal);color:#12140F;box-shadow:0 10px 26px rgba(255,106,19,.3)}
.btn-1:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(255,106,19,.45)}
.btn-2{background:rgba(255,255,255,.07);color:var(--hueso);border:1px solid var(--linea)}
.btn-2:hover{transform:translateY(-3px);background:rgba(255,255,255,.13)}
.btn svg{width:19px;height:19px;fill:currentColor;flex:0 0 19px}

/* ---------- secciones ---------- */
section{padding:clamp(56px,8vw,92px) 0}
.claro{background:var(--hueso);color:#171A1F}
.claro .antetitulo{color:#C4520B}.claro .antetitulo::before{background:#C4520B}
.medio{background:var(--acero)}
h2{font-size:clamp(25px,3.5vw,38px);line-height:1.15;margin:0 0 14px;font-weight:800;letter-spacing:-.4px}
h3{font-size:20px;margin:0 0 9px;font-weight:800}
.sub{color:var(--humo);max-width:62ch;margin:0 0 38px;font-size:17px}
.claro .sub{color:#5A6069}

/* ---------- reveal: cada bloque sube como una lama ---------- */
.rev{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1)}
.rev.visto{opacity:1;transform:none}
.rev.d1{transition-delay:.09s}.rev.d2{transition-delay:.18s}
.rev.d3{transition-delay:.27s}.rev.d4{transition-delay:.36s}

/* ---------- rejilla de servicios ---------- */
.rejilla{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.tarjeta{background:var(--acero2);border:1px solid var(--linea);border-radius:var(--radio);
  overflow:hidden;text-decoration:none;display:flex;flex-direction:column;
  transition:transform .3s,border-color .3s,box-shadow .3s}
.tarjeta:hover{transform:translateY(-6px);border-color:rgba(255,106,19,.5);
  box-shadow:0 18px 40px rgba(0,0,0,.4)}
.tarjeta-foto{aspect-ratio:16/10;overflow:hidden;position:relative}
.tarjeta-foto img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.tarjeta:hover .tarjeta-foto img{transform:scale(1.07)}
.tarjeta-txt{padding:22px 22px 24px}
.tarjeta p{color:var(--humo);font-size:15.5px;margin:0}
.tarjeta .mas{display:inline-block;margin-top:14px;color:var(--senal);font-weight:800;font-size:14.5px}
.claro .tarjeta{background:#fff;border-color:#E2E5E9}
.claro .tarjeta p{color:#5A6069}

/* ---------- cifras ---------- */
.cifras{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  border-top:1px solid var(--linea);border-bottom:1px solid var(--linea);padding:34px 0}
.cifra b{display:block;font-size:clamp(34px,5vw,50px);font-weight:800;color:var(--senal);line-height:1}
.cifra span{display:block;color:var(--humo);font-size:14.5px;margin-top:7px}

/* ---------- pasos ---------- */
.pasos{counter-reset:p;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.paso{position:relative;padding:26px 22px 22px;background:rgba(255,255,255,.04);
  border:1px solid var(--linea);border-radius:var(--radio)}
.paso::before{counter-increment:p;content:counter(p,decimal-leading-zero);
  font-size:13px;font-weight:800;color:var(--senal);letter-spacing:1px}
.paso h3{margin:8px 0 7px;font-size:18px}
.paso p{color:var(--humo);font-size:15.5px;margin:0}

/* ---------- bloques de texto largos ---------- */
.texto{max-width:78ch}
.texto article{padding:26px 0;border-top:1px solid rgba(255,255,255,.09)}
.texto article:first-child{border-top:none;padding-top:0}
.claro .texto article{border-color:#DFE3E8}
.texto h3{color:var(--senal);font-size:21px}
.claro .texto h3{color:#C4520B}
.texto p{margin:0;color:#C9CED5}
.claro .texto p{color:#41474F}

/* ---------- preguntas ---------- */
.faq{max-width:860px}
.faq details{border:1px solid var(--linea);border-radius:12px;margin-bottom:11px;
  background:rgba(255,255,255,.035);overflow:hidden}
.claro .faq details{background:#fff;border-color:#E2E5E9}
.faq summary{cursor:pointer;padding:17px 20px;font-weight:700;list-style:none;
  display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--senal);font-size:23px;font-weight:800;
  transition:transform .3s;line-height:1}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{margin:0;padding:0 20px 19px;color:var(--humo);font-size:16px}
.claro .faq p{color:#5A6069}

/* ---------- zonas ---------- */
.zonas{display:flex;flex-wrap:wrap;gap:9px}
.zona{padding:8px 15px;border:1px solid var(--linea);border-radius:999px;font-size:14.5px;
  color:var(--humo);transition:border-color .25s,color .25s,transform .25s}
.zona:hover{border-color:var(--senal);color:var(--hueso);transform:translateY(-2px)}
.claro .zona{border-color:#DDE1E6;color:#5A6069}


/* ---------- galeria de trabajos ---------- */
.galeria{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.gal-item{margin:0;border-radius:var(--radio);overflow:hidden;background:var(--acero2);
  border:1px solid var(--linea);transition:transform .3s,box-shadow .3s}
.gal-item:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(0,0,0,.42)}
.gal-item img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .6s}
.gal-item:hover img{transform:scale(1.06)}
.gal-item figcaption{padding:12px 15px 15px;font-size:14px;color:var(--humo);line-height:1.5}
.claro .gal-item{background:#fff;border-color:#E2E5E9}
.claro .gal-item figcaption{color:#5A6069}

/* ---------- cierre ---------- */
.cierre{background:linear-gradient(135deg,var(--senal) 0%,#E2560B 100%);color:#14120E;text-align:center}
.cierre h2{color:#14120E}
.cierre p{color:rgba(20,18,14,.82);max-width:60ch;margin:0 auto 28px;font-size:17.5px}
.cierre .btn-1{background:#14161A;color:var(--hueso);box-shadow:0 10px 26px rgba(0,0,0,.28)}
.cierre .btn-2{background:rgba(20,22,26,.12);color:#14120E;border-color:rgba(20,18,14,.3)}
.cierre .botones{justify-content:center}

/* ---------- formulario ---------- */
.form{display:grid;gap:13px;max-width:560px}
.form input,.form textarea{width:100%;padding:13px 15px;border-radius:11px;
  border:1px solid var(--linea);background:rgba(255,255,255,.05);color:var(--hueso);
  font:inherit;font-size:16px}
.claro .form input,.claro .form textarea{background:#fff;border-color:#DDE1E6;color:#171A1F}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--senal);
  box-shadow:0 0 0 3px rgba(255,106,19,.2)}
.form textarea{min-height:118px;resize:vertical}
.form button{padding:15px;border:none;border-radius:999px;background:var(--senal);
  color:#12140F;font:inherit;font-weight:800;font-size:16px;cursor:pointer;
  transition:transform .2s,box-shadow .2s}
.form button:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,19,.4)}
.form small{color:var(--humo);font-size:13.5px}
.claro .form small{color:#6B717A}

/* ---------- pie ---------- */
.pie{background:#0F1114;border-top:1px solid var(--linea);padding:54px 0 26px;font-size:15px}
.pie-rej{display:grid;gap:30px;grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}
.pie h4{margin:0 0 13px;font-size:15px;letter-spacing:.6px;text-transform:uppercase;color:var(--hueso)}
.pie a,.pie li,.pie p{color:var(--humo);text-decoration:none}
.pie a:hover{color:var(--senal)}
.pie ul{list-style:none;margin:0;padding:0}
.pie li{margin-bottom:8px}
.pie-abajo{margin-top:34px;padding-top:20px;border-top:1px solid var(--linea);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:var(--humo);font-size:13.5px}

/* ---------- botones flotantes ---------- */
#flota{position:fixed;right:18px;bottom:18px;z-index:110;display:flex;flex-direction:column;gap:11px}
#flota a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 22px rgba(0,0,0,.45);transition:transform .25s}
#flota a:hover{transform:translateY(-4px) scale(1.07)}
#flota svg{width:27px;height:27px;fill:#fff}
.f-tel{background:var(--senal);animation:latido 2.6s ease-out infinite}
.f-wa{background:#25D366}
@keyframes latido{0%{box-shadow:0 8px 22px rgba(0,0,0,.45),0 0 0 0 rgba(255,106,19,.6)}
  70%{box-shadow:0 8px 22px rgba(0,0,0,.45),0 0 0 15px rgba(255,106,19,0)}
  100%{box-shadow:0 8px 22px rgba(0,0,0,.45),0 0 0 0 rgba(255,106,19,0)}}

/* ---------- migas ---------- */
.migas{font-size:14px;color:var(--humo);padding:18px 0 0}
.migas a{text-decoration:none}.migas a:hover{color:var(--senal)}
.claro .migas{color:#6B717A}

/* ---------- movil ---------- */
@media(max-width:900px){
  .hamb{display:block}
  .nav{position:fixed;inset:68px 0 auto 0;background:var(--acero);flex-direction:column;
    gap:0;padding:10px 16px 20px;border-bottom:1px solid var(--linea);
    transform:translateY(-130%);transition:transform .32s cubic-bezier(.4,0,.2,1);margin:0}
  .nav.abierto{transform:translateY(0)}
  .nav a{width:100%;padding:13px 10px;border-bottom:1px solid var(--linea)}
  .cab-tel{display:none}
  .cab-in{gap:12px}
}
@media(max-width:600px){
  body{font-size:16px}
  .hero-in{padding:52px 0}
  section{padding:48px 0}
  #flota{right:13px;bottom:13px}
  #flota a{width:50px;height:50px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .rev{opacity:1;transform:none}
  #cortina{display:none}
}