/* ============ CORPORACIÓN ENTREMONTAÑAS ============ */
:root{
  --azul:#1d3a5f;
  --azul-claro:#2e6da4;
  --verde:#5f8a4e;
  --dorado:#c9973f;
  --dorado-claro:#e0b56a;
  --bg:#f7f5f0;
  --bg-alt:#ffffff;
  --bg-card:#ffffff;
  --texto:#22303f;
  --texto-suave:#5b6b7c;
  --linea:rgba(29,58,95,.12);
  --sombra:0 20px 50px -20px rgba(29,58,95,.25);
  --nav-bg:rgba(247,245,240,.82);
  --hero-grad:linear-gradient(160deg,#eef3f8 0%,#f7f5f0 55%,#f3ecdd 100%);
  --radius:20px;
  --transicion:.45s cubic-bezier(.22,.68,.32,1);
}
[data-theme="dark"]{
  --azul:#7db3e8;
  --azul-claro:#9ec9f5;
  --verde:#93c479;
  --dorado:#e6b968;
  --dorado-claro:#f0cf95;
  --bg:#0c1420;
  --bg-alt:#101a29;
  --bg-card:#152234;
  --texto:#e8eef5;
  --texto-suave:#9fb1c4;
  --linea:rgba(157,201,245,.14);
  --sombra:0 20px 50px -18px rgba(0,0,0,.6);
  --nav-bg:rgba(12,20,32,.82);
  --hero-grad:linear-gradient(160deg,#0e1a2b 0%,#0c1420 55%,#16202e 100%);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Sora',system-ui,sans-serif;
  background:var(--bg);color:var(--texto);
  overflow-x:hidden;line-height:1.6;
  transition:background .5s,color .5s;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---------- PRELOADER ---------- */
#preloader{
  position:fixed;inset:0;z-index:1000;
  background:linear-gradient(160deg,#12233a,#0c1420);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:26px;
  transition:opacity .7s,visibility .7s;
}
#preloader.oculto{opacity:0;visibility:hidden}
.pre-montanas{width:150px;filter:drop-shadow(0 6px 30px rgba(224,181,106,.35))}
.pre-montanas .m{stroke-dasharray:400;stroke-dashoffset:400;animation:trazo 2.2s ease forwards}
.pre-montanas .m2{animation-delay:.25s}
.pre-montanas .m3{animation-delay:.5s}
@keyframes trazo{to{stroke-dashoffset:0}}
.pre-texto{color:#e8eef5;font-size:.85rem;letter-spacing:6px;text-transform:uppercase;font-weight:600;opacity:0;animation:aparece 1s .8s forwards}
.pre-barra{width:190px;height:3px;background:rgba(255,255,255,.12);border-radius:99px;overflow:hidden}
.pre-barra span{display:block;height:100%;width:0;background:linear-gradient(90deg,#2e6da4,#93c479,#e6b968);animation:carga 2.4s ease forwards}
@keyframes carga{to{width:100%}}
@keyframes aparece{to{opacity:1}}

/* ---------- PARTÍCULAS ---------- */
#particulas{position:fixed;inset:0;z-index:0;pointer-events:none}

/* ---------- NAV ---------- */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 5vw;backdrop-filter:blur(14px);
  background:var(--nav-bg);border-bottom:1px solid var(--linea);
  transition:background .5s;
}
.nav-logo{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.5px}
.nav-logo img{height:42px;border-radius:8px}
.nav-logo span b{color:var(--dorado)}
.nav-links{display:flex;gap:28px;align-items:center;font-size:.92rem;font-weight:600}
.nav-links a{position:relative;padding:4px 0;transition:color .3s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:linear-gradient(90deg,var(--azul-claro),var(--dorado));transition:width .35s}
.nav-links a:hover::after{width:100%}
#btn-tema{
  border:1px solid var(--linea);background:var(--bg-card);color:var(--texto);
  width:40px;height:40px;border-radius:12px;cursor:pointer;font-size:1.05rem;
  transition:transform .3s,box-shadow .3s;
}
#btn-tema:hover{transform:rotate(20deg) scale(1.08);box-shadow:var(--sombra)}
#btn-menu{display:none;background:none;border:none;color:var(--texto);font-size:1.6rem;cursor:pointer}

/* ---------- HERO ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:var(--hero-grad);padding:120px 5vw 80px;overflow:hidden;z-index:1;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center;width:100%;max-width:1200px;margin:auto}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:700;letter-spacing:2.5px;text-transform:uppercase;
  color:var(--dorado);border:1px solid var(--dorado);padding:8px 18px;border-radius:99px;margin-bottom:22px;
  animation:brillo 3s ease-in-out infinite;
}
@keyframes brillo{0%,100%{box-shadow:0 0 0 0 rgba(201,151,63,.35)}50%{box-shadow:0 0 24px 3px rgba(201,151,63,.25)}}
.hero h1{font-size:clamp(2.4rem,5.2vw,4.2rem);line-height:1.08;font-weight:800;letter-spacing:-1px}
.hero h1 .grad{background:linear-gradient(90deg,var(--azul-claro),var(--verde) 55%,var(--dorado));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{margin:24px 0 36px;font-size:1.12rem;color:var(--texto-suave);max-width:560px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:10px;padding:15px 32px;border-radius:14px;font-weight:700;font-size:.98rem;
  transition:transform .3s,box-shadow .3s;cursor:pointer;border:none;
}
.btn-p{background:linear-gradient(120deg,#2e6da4,#1d3a5f);color:#fff;box-shadow:0 14px 34px -12px rgba(46,109,164,.55)}
.btn-p:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 22px 44px -12px rgba(46,109,164,.65)}
.btn-s{background:transparent;color:var(--texto);border:2px solid var(--dorado)}
.btn-s:hover{transform:translateY(-4px);background:var(--dorado);color:#fff}
.hero-visual{position:relative;display:flex;justify-content:center}
.hero-visual .marco{
  position:relative;border-radius:28px;overflow:hidden;box-shadow:var(--sombra);
  animation:flota 6s ease-in-out infinite;
}
.hero-visual img{width:100%;max-width:460px}
@keyframes flota{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-18px) rotate(1deg)}}
.orbe{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;z-index:1;animation:orbita 12s ease-in-out infinite}
.orbe-1{width:340px;height:340px;background:var(--azul-claro);top:-80px;right:-60px}
.orbe-2{width:280px;height:280px;background:var(--dorado);bottom:-40px;left:-80px;animation-delay:-6s}
@keyframes orbita{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-30px) scale(1.15)}}
.hero-stats{display:flex;gap:38px;margin-top:48px;flex-wrap:wrap}
.stat b{font-size:2rem;font-weight:800;color:var(--dorado)}
.stat small{display:block;color:var(--texto-suave);font-size:.85rem}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);color:var(--texto-suave);font-size:1.4rem;animation:rebote 2s infinite;z-index:2}
@keyframes rebote{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,12px)}}

/* ---------- SECCIONES ---------- */
section{position:relative;z-index:1;padding:110px 5vw}
.contenedor{max-width:1200px;margin:auto}
.sec-head{text-align:center;max-width:720px;margin:0 auto 70px}
.sec-tag{font-size:.78rem;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--verde)}
.sec-head h2{font-size:clamp(1.9rem,3.6vw,2.9rem);font-weight:800;margin:12px 0 16px;letter-spacing:-.5px}
.sec-head p{color:var(--texto-suave);font-size:1.05rem}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(50px);transition:opacity .9s ease,transform .9s cubic-bezier(.22,.68,.32,1)}
.reveal.izq{transform:translateX(-90px)}
.reveal.der{transform:translateX(90px)}
.reveal.zoom{transform:scale(.85)}
.reveal.visible{opacity:1;transform:none}

/* ---------- NOSOTROS ---------- */
.nosotros-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.pilar{
  background:var(--bg-card);border:1px solid var(--linea);border-radius:var(--radius);
  padding:38px 30px;transition:transform var(--transicion),box-shadow var(--transicion);
}
.pilar:hover{transform:translateY(-10px);box-shadow:var(--sombra)}
.pilar .ico{
  width:58px;height:58px;border-radius:16px;display:grid;place-items:center;font-size:1.5rem;margin-bottom:20px;
  background:linear-gradient(135deg,var(--azul-claro),var(--verde));color:#fff;
}
.pilar:nth-child(2) .ico{background:linear-gradient(135deg,var(--verde),var(--dorado))}
.pilar:nth-child(3) .ico{background:linear-gradient(135deg,var(--dorado),var(--azul-claro))}
.pilar h3{font-size:1.2rem;margin-bottom:10px}
.pilar p{color:var(--texto-suave);font-size:.95rem}

/* ---------- PROYECTOS ---------- */
.proyecto{
  display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
  margin-bottom:110px;
}
.proyecto:last-child{margin-bottom:0}
.proyecto.invertido .p-media{order:2}
.p-media{position:relative}
.p-media .marco{
  border-radius:24px;overflow:hidden;box-shadow:var(--sombra);position:relative;
  transition:transform .5s;
}
.p-media .marco:hover{transform:scale(1.03) rotate(.5deg)}
.p-media .marco img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .8s}
.p-media .marco:hover img{transform:scale(1.08)}
.p-glow{position:absolute;inset:-18px;border-radius:32px;filter:blur(38px);opacity:.35;z-index:-1}
.p-num{
  position:absolute;top:-26px;left:-16px;font-size:5rem;font-weight:800;opacity:.12;line-height:1;
  background:linear-gradient(120deg,var(--azul-claro),var(--dorado));-webkit-background-clip:text;background-clip:text;color:transparent;
}
.p-info .etiqueta{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;
  padding:6px 16px;border-radius:99px;margin-bottom:16px;color:#fff;
}
.p-info h3{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:800;margin-bottom:14px;letter-spacing:-.5px}
.p-info p{color:var(--texto-suave);margin-bottom:22px}
.p-datos{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.p-datos span{
  font-size:.82rem;font-weight:600;padding:7px 14px;border-radius:10px;
  background:var(--bg-card);border:1px solid var(--linea);color:var(--texto-suave);
}
.btn-ver{
  display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:.95rem;
  color:var(--azul-claro);transition:gap .3s;
}
.btn-ver:hover{gap:16px}

/* ---------- CTA / CONTACTO ---------- */
.cta-banda{
  background:linear-gradient(120deg,#1d3a5f,#2e6da4 55%,#5f8a4e);
  border-radius:28px;padding:70px 8%;text-align:center;color:#fff;position:relative;overflow:hidden;
}
.cta-banda::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(224,181,106,.22);filter:blur(80px);top:-150px;right:-100px}
.cta-banda h2{font-size:clamp(1.8rem,3.4vw,2.7rem);font-weight:800;margin-bottom:16px;position:relative}
.cta-banda p{opacity:.85;max-width:620px;margin:0 auto 34px;position:relative}
.cta-banda .btn-p{background:#fff;color:#1d3a5f;position:relative}
.contacto-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:60px}
.con-card{background:var(--bg-card);border:1px solid var(--linea);border-radius:var(--radius);padding:34px;text-align:center;transition:transform var(--transicion),box-shadow var(--transicion)}
.con-card:hover{transform:translateY(-8px);box-shadow:var(--sombra)}
.con-card .ico{font-size:1.9rem;margin-bottom:12px}
.con-card b{display:block;margin-bottom:6px}
.con-card span{color:var(--texto-suave);font-size:.92rem}

/* ---------- FOOTER ---------- */
footer{position:relative;z-index:1;border-top:1px solid var(--linea);padding:50px 5vw 30px;background:var(--bg-alt)}
.foot-grid{max-width:1200px;margin:auto;display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;align-items:center}
.foot-grid img{height:52px;border-radius:10px}
.foot-copy{text-align:center;color:var(--texto-suave);font-size:.82rem;margin-top:34px}

/* ---------- PÁGINA DE PROYECTO ---------- */
.proy-hero{
  min-height:62vh;display:flex;align-items:flex-end;position:relative;overflow:hidden;
  padding:140px 5vw 60px;z-index:1;
}
.proy-hero .fondo{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.42) saturate(1.1);transform:scale(1.06);animation:zoomlento 16s ease-in-out infinite alternate}
@keyframes zoomlento{to{transform:scale(1.14)}}
.proy-hero .velo{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(10,16,26,.85))}
.proy-hero .contenido{position:relative;z-index:2;max-width:1200px;margin:auto;width:100%;color:#fff}
.proy-hero h1{font-size:clamp(2.2rem,4.6vw,3.6rem);font-weight:800;letter-spacing:-1px;margin:14px 0 10px}
.proy-hero .sub{font-size:1.15rem;opacity:.88;max-width:640px}
.volver{
  display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.9rem;color:#fff;
  background:rgba(255,255,255,.14);padding:9px 20px;border-radius:99px;backdrop-filter:blur(8px);transition:background .3s,gap .3s;
}
.volver:hover{background:rgba(255,255,255,.26);gap:13px}
.proy-cuerpo{padding:90px 5vw}
.proy-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start;max-width:1200px;margin:auto}
.proy-texto h2{font-size:1.7rem;font-weight:800;margin-bottom:16px;letter-spacing:-.4px}
.proy-texto h2 + p, .proy-texto p{color:var(--texto-suave);margin-bottom:18px}
.proy-lista{list-style:none;margin:6px 0 26px}
.proy-lista li{padding:11px 0 11px 34px;position:relative;color:var(--texto-suave);border-bottom:1px dashed var(--linea)}
.proy-lista li::before{content:"✦";position:absolute;left:6px;color:var(--dorado);font-weight:800}
.proy-galeria{display:grid;gap:22px}
.proy-galeria .marco{border-radius:20px;overflow:hidden;box-shadow:var(--sombra)}
.proy-galeria img{width:100%;transition:transform .7s}
.proy-galeria .marco:hover img{transform:scale(1.05)}
.tarjetas-datos{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px;margin:34px 0}
.dato-card{background:var(--bg-card);border:1px solid var(--linea);border-radius:16px;padding:22px;text-align:center;transition:transform .35s}
.dato-card:hover{transform:translateY(-6px)}
.dato-card b{display:block;font-size:1.45rem;color:var(--dorado)}
.dato-card span{font-size:.83rem;color:var(--texto-suave)}
.tabla-wrap{overflow-x:auto;border-radius:16px;border:1px solid var(--linea);margin:26px 0}
table{width:100%;border-collapse:collapse;font-size:.9rem;min-width:520px}
th{background:linear-gradient(120deg,var(--azul),var(--azul-claro));color:#fff;padding:13px 16px;text-align:left}
[data-theme="dark"] th{background:linear-gradient(120deg,#1d3a5f,#2e6da4)}
td{padding:12px 16px;border-bottom:1px solid var(--linea);color:var(--texto-suave)}
tr:hover td{background:rgba(201,151,63,.06)}

/* ---------- RESPONSIVE ---------- */
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;gap:44px;text-align:center}
  .hero p{margin-inline:auto}
  .hero-cta,.hero-stats{justify-content:center}
  .nosotros-grid{grid-template-columns:1fr}
  .proyecto{grid-template-columns:1fr;gap:34px}
  .proyecto.invertido .p-media{order:0}
  .contacto-grid{grid-template-columns:1fr}
  .proy-grid{grid-template-columns:1fr}
}
@media(max-width:760px){
  .nav-links{
    position:fixed;top:70px;right:0;flex-direction:column;background:var(--nav-bg);backdrop-filter:blur(16px);
    width:min(78vw,300px);padding:34px 28px;gap:22px;border-left:1px solid var(--linea);border-bottom:1px solid var(--linea);
    border-radius:0 0 0 22px;transform:translateX(110%);transition:transform .45s cubic-bezier(.22,.68,.32,1);align-items:flex-start;
  }
  .nav-links.abierto{transform:translateX(0)}
  #btn-menu{display:block}
  section{padding:80px 6vw}
  .reveal.izq,.reveal.der{transform:translateY(50px)}
  .reveal.visible{transform:none}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}