/* Construcciones Hernández — sistema visual "Bitácora de obra" */
@font-face{font-family:"Archivo";src:url("../fonts/archivo-var.woff2") format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"Archivo Narrow";src:url("../fonts/archivo-narrow-700.woff2") format("woff2");font-weight:700;font-display:swap}
:root{
  --concreto:#546E7A;--concreto-osc:#263238;--concreto-med:#37474F;--concreto-cla:#ECEFF1;--concreto-lin:#CFD8DC;
  --casco:#F9A825;--casco-osc:#C17900;--blanco:#FFFFFF;--texto:#1F2A30;--texto-sec:#4A5A62;
  --ok:#2E7D32;--error:#B3261E;
  --f-cuerpo:"Archivo",system-ui,sans-serif;--f-rotulo:"Archivo Narrow","Archivo",sans-serif;
  --r:4px;--sombra:0 10px 30px -12px rgba(38,50,56,.35);
  --max:1180px;--pad:clamp(1rem,4vw,2rem);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--f-cuerpo);color:var(--texto);background:var(--blanco);line-height:1.6;font-size:1.0625rem}
img{max-width:100%;height:auto;display:block}
a{color:var(--concreto-osc);text-decoration-color:var(--casco);text-decoration-thickness:2px;text-underline-offset:3px}
a:hover{color:var(--casco-osc)}
:focus-visible{outline:3px solid var(--casco);outline-offset:2px}
h1,h2,h3{line-height:1.12;color:var(--concreto-osc);margin:0 0 .6em}
h1{font-size:clamp(2.1rem,6vw,3.8rem);font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800;letter-spacing:-.01em}
h3{font-size:1.25rem;font-weight:700}
.rotulo{font-family:var(--f-rotulo);text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;color:var(--concreto);display:inline-flex;align-items:center;gap:.6rem;margin-bottom:.8rem}
.rotulo::before{content:"";width:28px;height:4px;background:var(--casco)}
.envoltura{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.seccion{padding:clamp(3rem,8vw,6rem) 0}
.seccion--gris{background:var(--concreto-cla)}
.seccion--osc{background:var(--concreto-osc);color:var(--concreto-cla)}
.seccion--osc h2,.seccion--osc h3{color:var(--blanco)}
.seccion--osc a{color:var(--blanco)}
.salto{position:absolute;left:-999px;top:0;background:var(--casco);padding:.6rem 1rem;z-index:100}
.salto:focus{left:1rem}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
/* encabezado */
.cabecera{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.97);border-bottom:1px solid var(--concreto-lin)}
.cabecera__in{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:68px}
.cabecera__logo img{height:44px;width:auto}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:.2rem}
.nav a{display:block;padding:.55rem .7rem;text-decoration:none;font-weight:600;font-size:.95rem;border-radius:var(--r)}
.nav a[aria-current="page"]{box-shadow:inset 0 -3px 0 var(--casco)}
.nav a:hover{background:var(--concreto-cla);color:var(--concreto-osc)}
.menu-btn{display:none;background:none;border:2px solid var(--concreto-osc);border-radius:var(--r);padding:.45rem .7rem;font:inherit;font-weight:700;cursor:pointer;min-height:44px}
@media (max-width:960px){
  .menu-btn{display:inline-flex;align-items:center;gap:.4rem}
  .nav{position:fixed;inset:68px 0 auto 0;background:var(--blanco);border-bottom:4px solid var(--casco);display:none;max-height:calc(100vh - 68px);overflow:auto}
  .nav.abierto{display:block}
  .nav ul{flex-direction:column;padding:.5rem var(--pad) 1rem}
  .nav a{padding:.85rem .5rem;border-bottom:1px solid var(--concreto-cla)}
  .cabecera__cta{display:none}
}
/* botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:.75rem 1.3rem;border-radius:var(--r);font:inherit;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn--casco{background:var(--casco);color:var(--concreto-osc)}
.btn--casco:hover{background:#FFB938;color:var(--concreto-osc)}
.btn--osc{background:var(--concreto-osc);color:var(--blanco)}
.btn--osc:hover{background:var(--concreto-med);color:var(--blanco)}
.btn--linea{border-color:currentColor;background:transparent;color:inherit}
.btn--wa{background:#1F7A4D;color:var(--blanco)}
.btn--wa:hover{background:#17623D;color:var(--blanco)}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}
.botones{display:flex;flex-wrap:wrap;gap:.75rem}
/* portada */
.portada{position:relative;background:var(--concreto-osc);color:var(--blanco);overflow:hidden}
.portada__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.portada__in{position:relative;padding:clamp(4rem,12vw,8rem) 0 clamp(3rem,8vw,5rem)}
.portada h1{color:var(--blanco);max-width:15ch}
.portada h1 em{font-style:normal;color:var(--casco)}
.portada p.lead{font-size:clamp(1.05rem,2.4vw,1.3rem);max-width:52ch;color:var(--concreto-cla)}
.portada .rotulo{color:var(--concreto-lin)}
.cinta{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:1px;background:var(--concreto-med);margin-top:3rem;border-top:4px solid var(--casco)}
.cinta div{background:rgba(38,50,56,.92);padding:1rem 1.1rem;font-size:.95rem}
.cinta strong{display:block;font-family:var(--f-rotulo);text-transform:uppercase;letter-spacing:.1em;font-size:.75rem;color:var(--casco)}
.cabeza-pag{background:var(--concreto-osc);color:var(--concreto-cla);padding:clamp(2.5rem,7vw,4.5rem) 0;border-bottom:6px solid var(--casco)}
.cabeza-pag h1{color:var(--blanco);font-size:clamp(2rem,5vw,3.2rem)}
.migas{font-size:.85rem;margin-bottom:1rem}.migas a{color:var(--concreto-lin)}
.migas ol{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;padding:0;margin:0}
.migas li+li::before{content:"/";margin-right:.4rem;color:var(--casco)}
/* rejillas variadas */
.dos{display:grid;gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
@media(min-width:860px){.dos{grid-template-columns:1.05fr .95fr}.dos--inv>*:first-child{order:2}}
.marco{position:relative}
.marco img{border-radius:var(--r);box-shadow:var(--sombra)}
.marco::after{content:"";position:absolute;inset:auto -14px -14px auto;width:45%;height:45%;border-right:6px solid var(--casco);border-bottom:6px solid var(--casco);pointer-events:none}
.nota-ilus{font-size:.78rem;color:var(--texto-sec);margin-top:.5rem}
.etapas{counter-reset:e;list-style:none;padding:0;margin:2rem 0 0;display:grid;gap:0}
@media(min-width:760px){.etapas{grid-template-columns:repeat(4,1fr)}}
.etapas li{counter-increment:e;padding:1.4rem 1.2rem;border-left:3px solid var(--casco);background:var(--blanco)}
.etapas li::before{content:"0" counter(e);font-family:var(--f-rotulo);font-size:2.2rem;color:var(--concreto-lin);display:block;line-height:1}
.lista-precios{border-top:3px solid var(--concreto-osc)}
.fila{display:grid;grid-template-columns:1fr auto;gap:.5rem 1rem;padding:1rem 0;border-bottom:1px dashed var(--concreto-lin);align-items:baseline}
.fila a{font-weight:700;text-decoration:none}.fila a:hover{text-decoration:underline}
.fila .precio{font-family:var(--f-rotulo);font-size:1.15rem;color:var(--concreto-osc);white-space:nowrap}
.fila small{grid-column:1/-1;color:var(--texto-sec)}
.tarjetas{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.tarjeta{background:var(--blanco);border:1px solid var(--concreto-lin);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s}
.tarjeta:hover{box-shadow:var(--sombra)}
.tarjeta img{aspect-ratio:4/3;object-fit:cover;width:100%}
.tarjeta__c{padding:1.1rem;display:flex;flex-direction:column;gap:.4rem;flex:1}
.tarjeta__c p{margin:0;color:var(--texto-sec);font-size:.95rem}
.tarjeta__c .precio{font-family:var(--f-rotulo);color:var(--concreto-osc);font-size:1.1rem;margin-top:auto;padding-top:.6rem}
.chip{display:inline-block;font-size:.72rem;font-family:var(--f-rotulo);letter-spacing:.08em;text-transform:uppercase;background:var(--concreto-cla);padding:.2rem .5rem;border-radius:2px;color:var(--concreto-med)}
.aviso{border-left:4px solid var(--casco);background:#FFF8E6;padding:1rem 1.2rem;border-radius:0 var(--r) var(--r) 0;font-size:.95rem}
.prosa{max-width:72ch}.prosa h2{margin-top:2rem;font-size:1.6rem}.prosa h3{margin-top:1.5rem}
.prosa table{border-collapse:collapse;width:100%;font-size:.95rem}.prosa td,.prosa th{border:1px solid var(--concreto-lin);padding:.5rem;text-align:left;vertical-align:top}
/* filtros */
.filtros{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;margin-bottom:1.5rem}
.filtros input{flex:1 1 240px}
.filtro-btn{border:2px solid var(--concreto-lin);background:var(--blanco);border-radius:999px;padding:.45rem 1rem;font:inherit;font-weight:600;cursor:pointer;min-height:44px}
.filtro-btn[aria-pressed="true"]{background:var(--concreto-osc);color:var(--blanco);border-color:var(--concreto-osc)}
.vacio{padding:2rem;text-align:center;border:2px dashed var(--concreto-lin);border-radius:var(--r);color:var(--texto-sec)}
/* formularios */
.form{display:grid;gap:1rem}
.campo{display:grid;gap:.35rem}
.campo label{font-weight:700;font-size:.95rem}
.campo .ayuda{font-size:.82rem;color:var(--texto-sec)}
input,select,textarea{font:inherit;padding:.75rem .85rem;border:2px solid var(--concreto-lin);border-radius:var(--r);background:var(--blanco);color:var(--texto);min-height:48px;width:100%}
input:focus,select:focus,textarea:focus{border-color:var(--concreto);outline:3px solid rgba(249,168,37,.5)}
[aria-invalid="true"]{border-color:var(--error)}
.err{color:var(--error);font-size:.85rem;font-weight:600;min-height:1em}
.dos-campos{display:grid;gap:1rem}@media(min-width:620px){.dos-campos{grid-template-columns:1fr 1fr}}
.check{display:flex;gap:.6rem;align-items:flex-start;font-size:.9rem}.check input{width:22px;min-height:22px;margin-top:.2rem}
.estado{padding:1rem;border-radius:var(--r);display:none}
.estado.ver{display:block}.estado--ok{background:#E8F5E9;border-left:4px solid var(--ok)}.estado--err{background:#FDECEA;border-left:4px solid var(--error)}
.resumen{white-space:pre-wrap;background:var(--concreto-cla);padding:1rem;border-radius:var(--r);font-size:.9rem;font-family:ui-monospace,monospace}
.hp{position:absolute;left:-5000px}
/* cotizador */
.cotizador{background:var(--blanco);border:2px solid var(--concreto-osc);border-radius:var(--r);padding:clamp(1.2rem,3vw,2rem);box-shadow:8px 8px 0 var(--casco)}
.cotizador output{display:block;font-family:var(--f-rotulo);font-size:clamp(1.8rem,5vw,2.6rem);color:var(--concreto-osc);margin:.6rem 0}
/* galería */
.galeria{display:grid;gap:.8rem;grid-template-columns:repeat(2,1fr)}
@media(min-width:760px){.galeria{grid-template-columns:repeat(4,1fr)}.galeria button:nth-child(1){grid-column:span 2;grid-row:span 2}}
.galeria button{padding:0;border:0;background:none;cursor:zoom-in;border-radius:var(--r);overflow:hidden;position:relative}
.galeria img{width:100%;height:100%;object-fit:cover;aspect-ratio:1;transition:transform .3s}
.galeria button:hover img{transform:scale(1.04)}
.galeria span{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(38,50,56,.85));color:var(--blanco);font-size:.85rem;padding:1.5rem .7rem .6rem;text-align:left}
.visor{position:fixed;inset:0;background:rgba(20,28,32,.94);z-index:90;display:none;align-items:center;justify-content:center;padding:1rem}
.visor.abierto{display:flex}
.visor figure{margin:0;max-width:1100px;width:100%}.visor img{max-height:78vh;margin:0 auto;width:auto}
.visor figcaption{color:var(--concreto-cla);text-align:center;margin-top:.8rem}
.visor button{position:absolute;background:var(--casco);border:0;border-radius:var(--r);width:48px;height:48px;font-size:1.4rem;cursor:pointer;color:var(--concreto-osc)}
.visor .cerrar{top:1rem;right:1rem}.visor .prev{left:1rem;top:50%}.visor .sig{right:1rem;top:50%}
/* faq */
details{border-bottom:1px solid var(--concreto-lin);padding:1rem 0}
summary{font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem}
summary::after{content:"+";color:var(--casco-osc);font-size:1.4rem;line-height:1}
details[open] summary::after{content:"–"}
/* pie */
.pie{background:var(--concreto-osc);color:var(--concreto-lin);padding:3.5rem 0 7rem;font-size:.95rem}
.pie a{color:var(--blanco)}
.pie__rej{display:grid;gap:2rem}@media(min-width:820px){.pie__rej{grid-template-columns:1.3fr 1fr 1fr 1fr}}
.pie h2{font-size:.85rem;font-family:var(--f-rotulo);text-transform:uppercase;letter-spacing:.12em;color:var(--casco)}
.pie ul{list-style:none;padding:0;margin:0;display:grid;gap:.4rem}
.pie address{font-style:normal}
.pie__legal{border-top:1px solid var(--concreto-med);margin-top:2.5rem;padding-top:1.2rem;display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;font-size:.85rem}
.linkbtn{background:none;border:0;color:var(--blanco);text-decoration:underline;font:inherit;cursor:pointer;padding:0}
/* flotantes: llamada/WA izquierda, chat derecha; se elevan sobre el banner */
.flotantes{position:fixed;left:1rem;bottom:calc(1rem + var(--banner-h,0px));z-index:50;display:flex;gap:.5rem;transition:bottom .2s}
.flotantes a{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;box-shadow:var(--sombra);text-decoration:none}
.flotantes svg{width:24px;height:24px;fill:currentColor}
.f-tel{background:var(--concreto-osc);color:var(--blanco)}.f-wa{background:#1F7A4D;color:var(--blanco)}
/* chatbot */
.chat-lanzador{position:fixed;right:1rem;bottom:calc(1rem + var(--banner-h,0px));z-index:55;background:var(--casco);color:var(--concreto-osc);border:0;border-radius:999px;padding:.8rem 1.1rem;font:inherit;font-weight:800;display:flex;gap:.5rem;align-items:center;box-shadow:var(--sombra);cursor:pointer;min-height:52px;transition:bottom .2s}
.chat-lanzador svg{width:22px;height:22px}
.chat{position:fixed;right:1rem;bottom:calc(5rem + var(--banner-h,0px));z-index:60;width:min(390px,calc(100vw - 2rem));height:min(580px,calc(100vh - 7rem - var(--banner-h,0px)));background:var(--blanco);border-radius:8px;box-shadow:0 20px 50px -10px rgba(0,0,0,.45);display:none;flex-direction:column;overflow:hidden;border-top:6px solid var(--casco)}
.chat.abierto{display:flex}
@media(max-width:520px){.chat{right:0;left:0;bottom:0;width:100%;height:100%;border-radius:0}}
.chat__cab{background:var(--concreto-osc);color:var(--blanco);padding:.8rem 1rem;display:flex;align-items:center;gap:.7rem}
.chat__cab img{width:34px;height:34px}
.chat__cab div{flex:1;line-height:1.25}.chat__cab small{color:var(--concreto-lin);font-size:.75rem}
.chat__cab button{background:none;border:1px solid var(--concreto);color:var(--blanco);border-radius:var(--r);min-width:40px;min-height:40px;cursor:pointer;font:inherit;font-size:.8rem}
.chat__log{flex:1;overflow:auto;padding:1rem;display:flex;flex-direction:column;gap:.6rem;background:var(--concreto-cla)}
.msg{max-width:88%;padding:.65rem .85rem;border-radius:10px;font-size:.93rem;line-height:1.45}
.msg--bot{background:var(--blanco);align-self:flex-start;border-bottom-left-radius:2px}
.msg--yo{background:var(--concreto);color:var(--blanco);align-self:flex-end;border-bottom-right-radius:2px}
.msg a{font-weight:700}
.chat__rapidas{display:flex;gap:.4rem;flex-wrap:wrap;padding:.6rem .8rem;border-top:1px solid var(--concreto-lin)}
.chat__rapidas button{background:var(--blanco);border:1.5px solid var(--concreto);border-radius:999px;padding:.35rem .7rem;font:inherit;font-size:.82rem;cursor:pointer;color:var(--concreto-osc)}
.chat__rapidas button:hover{background:var(--casco);border-color:var(--casco)}
.chat__form{display:flex;gap:.4rem;padding:.6rem .8rem .8rem}
.chat__form input{min-height:44px}
.chat__form button{background:var(--concreto-osc);color:var(--blanco);border:0;border-radius:var(--r);padding:0 1rem;font:inherit;font-weight:700;cursor:pointer}
/* cookies */
.cookies{position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--blanco);border-top:4px solid var(--casco);box-shadow:0 -10px 30px -10px rgba(0,0,0,.3);padding:1rem 0;display:none}
.cookies.ver{display:block}
.cookies__in{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between}
.cookies p{margin:0;max-width:70ch;font-size:.9rem}
.cookies .btn{min-height:44px;padding:.5rem 1.1rem}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.aparece{opacity:0;transform:translateY(14px);transition:opacity .6s,transform .6s}.aparece.visto{opacity:1;transform:none}