/* ===== BLASTCOL landing ===== */
:root{
  --bg:#f6f4f0; --ink:#1e1e1e; --muted:#5e5e5e;
  --dark:#262626; --dark2:#303030; --forest:#163222;
  --grad:linear-gradient(160deg,#262626 0%,#1f2a23 50%,var(--forest) 100%); --line:#e3ded6;
  --accent:#f26a1b; --accent-d:#d4560e; --green:#1f7a3d;
  --radius:14px; --wrap:1180px; --head:72px;
  --font:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --font-d:'Barlow Condensed','Inter',sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--head)}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}
img,video,iframe{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--font-d);line-height:1.05;margin:0 0 .5em;letter-spacing:.01em;text-transform:uppercase}
h1{font-size:clamp(2.6rem,7vw,5rem);font-weight:800}
h2{font-size:clamp(2rem,4.5vw,3.1rem);font-weight:700}
h3{font-size:1.5rem;font-weight:700}
p{margin:0 0 1em}
.wrap{width:min(100% - 32px,var(--wrap));margin-inline:auto}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 12px;z-index:200}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:.85em 1.5em;border:2px solid var(--accent);background:var(--accent);color:#fff;font:600 1rem var(--font);border-radius:999px;text-decoration:none;cursor:pointer;transition:transform .2s,background .2s}
.btn:hover{background:var(--accent-d);border-color:var(--accent-d);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.7)}
.btn-ghost:hover{background:#fff;color:var(--dark);border-color:#fff}
.btn-sm{padding:.5em 1.1em;font-size:.9rem}

/* Header */
.header{position:fixed;inset:0 0 auto 0;height:var(--head);z-index:100;background:transparent;transition:background .3s,box-shadow .3s}
.header.scrolled{background:rgba(38,38,38,.96);box-shadow:0 2px 20px rgba(0,0,0,.3);backdrop-filter:blur(8px)}
.header-in{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff;font:700 .95rem/1.1 var(--font-d);letter-spacing:.04em}
.brand img{width:44px;height:44px;border-radius:10px;object-fit:cover}
.menu{display:flex;align-items:center;gap:6px}
.menu a{color:#fff;text-decoration:none;font-weight:500;padding:.5em .9em;border-radius:999px;transition:background .2s}
.menu a:not(.btn):hover,.menu a.is-active{background:rgba(255,255,255,.14)}
.menu .btn{margin-left:6px}
.burger{display:none;width:44px;height:44px;background:none;border:0;cursor:pointer;padding:10px}
.burger span{display:block;height:2px;background:#fff;margin:6px 0;transition:transform .25s,opacity .25s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* Hero */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;color:#fff;background:var(--dark);overflow:hidden;padding:calc(var(--head) + 40px) 0 60px}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,20,20,.88) 0%,rgba(20,20,20,.55) 60%,rgba(22,50,34,.45) 100%)}
.hero-in{position:relative;max-width:var(--wrap)}
.hero h1{max-width:12ch}
.lead{font-size:1.15rem;max-width:56ch;color:#e8e6e1}
.eyebrow{font:700 .85rem var(--font);letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin-bottom:.8em}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:1.5em}
.stats{list-style:none;display:flex;flex-wrap:wrap;gap:28px;margin:2.5em 0 0;padding:0}
.stats li{border-left:3px solid var(--accent);padding-left:12px}
.stats strong{display:block;font:800 1.8rem var(--font-d);text-transform:uppercase}
.stats span{font-size:.85rem;color:#cfcdc8}

/* Secciones */
.section{padding:clamp(64px,9vw,110px) 0}
.section.dark{background:var(--dark);background-image:var(--grad);color:#f1efea}
.section-head{max-width:60ch;margin-bottom:2.5rem}
.section-head p:last-child{color:var(--muted)}
.dark .section-head p:last-child{color:#bdbdbd}

/* Nosotros */
.about-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(24px,5vw,64px);align-items:center}
.about-media{margin:0;border-radius:var(--radius);overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.18)}
.about-media img{width:100%;aspect-ratio:1;object-fit:cover}
.tabs{display:flex;gap:8px;margin:1.5em 0 1em;flex-wrap:wrap}
.tabs button{font:600 .95rem var(--font);padding:.55em 1.2em;border-radius:999px;border:1.5px solid var(--line);background:#fff;cursor:pointer;color:var(--ink)}
.tabs button[aria-selected="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.panel p{color:var(--muted);margin:0}

/* Servicios */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:rgba(48,48,48,.82);border:1px solid #3d3d3d;border-radius:var(--radius);padding:28px;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-6px);border-color:var(--accent)}
.ico{width:44px;height:44px;fill:none;stroke:var(--accent);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;margin-bottom:14px}
.card ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:.95rem;color:#c6c6c6}
.card li{padding-left:18px;position:relative}
.card li::before{content:"";position:absolute;left:0;top:.65em;width:7px;height:7px;background:var(--accent);border-radius:2px}
.card strong{color:#fff}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,56px);margin-top:64px;padding-top:48px;border-top:1px solid #3d3d3d}
.split p{color:#bdbdbd}
.check{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.check li{padding-left:28px;position:relative}
.check li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:700}

/* Portafolio */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.chip{font:600 .9rem var(--font);padding:.55em 1.2em;border-radius:999px;border:1.5px solid var(--line);background:#fff;cursor:pointer}
.chip.is-on{background:var(--accent);border-color:var(--accent);color:#fff}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.shot{position:relative;display:block;width:100%;aspect-ratio:4/3;padding:0;margin:0;border:0;border-radius:12px;overflow:hidden;cursor:zoom-in;background:#ddd}
.shot img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.shot:hover img{transform:scale(1.05)}
.shot span{position:absolute;inset:auto 0 0 0;padding:28px 12px 10px;color:#fff;text-align:left;font-size:.85rem;font-weight:600;background:linear-gradient(transparent,rgba(0,0,0,.75));opacity:0;transition:opacity .25s}
.shot:hover span,.shot:focus-visible span{opacity:1}
.shot.hide{display:none}

/* Antes / después */
.compare-wrap{margin-top:64px;max-width:420px;margin-inline:auto;text-align:center}
.compare{position:relative;aspect-ratio:9/16;border-radius:var(--radius);overflow:hidden;user-select:none;box-shadow:0 20px 50px rgba(0,0,0,.2)}
.compare>img,.compare-before img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.compare-before{position:absolute;inset:0;clip-path:inset(0 50% 0 0)}
.compare-bar{position:absolute;top:0;bottom:0;left:50%;width:3px;background:#fff;transform:translateX(-50%);pointer-events:none}
.compare-bar::after{content:"↔";position:absolute;top:50%;left:50%;width:42px;height:42px;display:grid;place-items:center;background:#fff;color:var(--ink);border-radius:50%;transform:translate(-50%,-50%);font-weight:700;box-shadow:0 2px 10px rgba(0,0,0,.35)}
.compare input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.tag{position:absolute;top:12px;padding:.25em .8em;border-radius:999px;background:rgba(0,0,0,.65);color:#fff;font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.tag-a{left:12px}.tag-b{right:12px}

/* Contacto */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:start}
.info{list-style:none;margin:1.5em 0;padding:0;display:grid;gap:14px}
.info li{display:flex;gap:12px;align-items:flex-start}
.info svg{flex:none;width:24px;height:24px;fill:none;stroke:var(--accent);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;margin-top:2px}
.info a{text-decoration:none;border-bottom:1px solid #555}
.info a:hover{border-color:var(--accent)}
.map{border-radius:var(--radius);overflow:hidden;border:1px solid #3d3d3d}
.map iframe{width:100%;height:280px;border:0;filter:grayscale(.3)}
.form{background:rgba(48,48,48,.82);border:1px solid #3d3d3d;border-radius:var(--radius);padding:clamp(20px,3vw,36px)}
.form label{display:block;font-weight:600;font-size:.9rem;margin:14px 0 6px}
.form input,.form select,.form textarea{width:100%;padding:.8em 1em;background:#1f1f1f;color:#fff;border:1.5px solid #4a4a4a;border-radius:10px;font:inherit}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--accent)}
.form .invalid{border-color:#ff5a5a}
.err{display:block;min-height:1.2em;color:#ff8080;font-size:.8rem;margin-top:4px}
.form .btn{width:100%;margin-top:14px}
.note{font-size:.8rem;color:#9e9e9e;text-align:center;margin:10px 0 0}

/* Footer */
.footer{background:linear-gradient(90deg,#1c1c1c,#10241a);border-top:3px solid var(--forest);color:#c6c6c6;padding:36px 0 90px}
.foot-in{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center}
.footer strong{font:700 1.4rem var(--font-d);color:#fff;text-transform:uppercase}
.footer p{margin:0}
.footer nav{display:flex;gap:18px;flex-wrap:wrap}
.footer nav a{text-decoration:none}.footer nav a:hover{color:var(--accent)}
.copy{grid-column:1/-1;font-size:.8rem;border-top:1px solid #222;padding-top:16px}

/* WhatsApp flotante */
.wa{position:fixed;right:18px;bottom:18px;width:58px;height:58px;display:grid;place-items:center;background:#25d366;border-radius:50%;box-shadow:0 8px 24px rgba(0,0,0,.35);z-index:90;transition:transform .2s}
.wa:hover{transform:scale(1.08)}
.wa svg{width:30px;height:30px;fill:#fff}

/* Lightbox */
.lightbox{position:fixed;inset:0;z-index:300;background:rgba(15,15,15,.92);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}
.lightbox[hidden]{display:none}
.lightbox img{max-height:82vh;width:auto;border-radius:10px}
.lightbox p{color:#ddd;margin:12px 0 0}
.lb-close{position:absolute;top:14px;right:18px;font-size:2.4rem;line-height:1;color:#fff;background:none;border:0;cursor:pointer}

/* Animación de entrada */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}

/* Responsive */
@media (max-width:960px){
  .cards{grid-template-columns:1fr}
  .about-grid,.contact-grid,.split{grid-template-columns:1fr}
  .about-media{max-width:520px}
}
@media (max-width:820px){
  .burger{display:block}
  .menu{position:fixed;inset:var(--head) 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:rgba(38,38,38,.98);padding:12px 16px 20px;transform:translateY(-130%);transition:transform .3s;visibility:hidden}
  .menu.open{transform:none;visibility:visible}
  .menu a{padding:.9em 1em;font-size:1.05rem}
  .menu .btn{margin:10px 0 0;text-align:center}
  .header{background:rgba(38,38,38,.96)}
}
@media (max-width:820px){
  .menu{max-height:calc(100svh - var(--head));overflow-y:auto}
  .hero{min-height:auto;padding:calc(var(--head) + 48px) 0 56px}
  .hero-shade{background:linear-gradient(180deg,rgba(20,20,20,.75) 0%,rgba(22,50,34,.85) 100%)}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .map iframe{height:240px}
}
@media (max-width:480px){
  :root{--head:64px}
  .brand{gap:8px}
  .brand img{width:38px;height:38px}
  .brand span{font-size:.78rem}
  .lead{font-size:1rem}
  .cta .btn{flex:1 1 100%}
  .stats{gap:14px 18px}
  .stats strong{font-size:1.5rem}
  .section-head{margin-bottom:1.75rem}
  .card{padding:22px}
  .split{margin-top:44px;padding-top:36px}
  .filters{flex-wrap:nowrap;overflow-x:auto;margin-inline:-16px;padding:0 16px 6px;scrollbar-width:none}
  .filters::-webkit-scrollbar{display:none}
  .chip{flex:none}
  .gallery{grid-template-columns:repeat(2,1fr);gap:10px}
  .shot{aspect-ratio:1}
  .shot span{opacity:1;padding:20px 8px 6px;font-size:.75rem}
  .compare-wrap{margin-top:44px}
  .compare{aspect-ratio:3/4}
  .info li{word-break:break-word}
  .map iframe{height:220px}
  .foot-in{grid-template-columns:1fr}
  .wa{width:52px;height:52px;right:14px;bottom:14px}
  .lightbox{padding:12px}
  .lightbox img{max-height:75vh}
  .lb-close{top:8px;right:10px;width:48px;height:48px}
}
/* En pantallas táctiles no dejar efectos hover "pegados" */
@media (hover:none){
  .btn:hover,.card:hover{transform:none}
  .shot:hover img{transform:none}
  .shot span{opacity:1}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
  .hero-video{display:none}
  .hero{background:var(--dark) url("imagenes.html/imagen%20de%20fondo.png") center/cover}
}