/* ---------- Montserrat, servida desde el propio dominio ---------- */
@font-face{
  font-family:'Montserrat';font-style:normal;font-weight:400;font-display:swap;
  src:url(fonts/montserrat-400-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:'Montserrat';font-style:normal;font-weight:400;font-display:swap;
  src:url(fonts/montserrat-400-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
@font-face{
  font-family:'Montserrat';font-style:normal;font-weight:500;font-display:swap;
  src:url(fonts/montserrat-500-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:'Montserrat';font-style:normal;font-weight:500;font-display:swap;
  src:url(fonts/montserrat-500-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
@font-face{
  font-family:'Montserrat';font-style:normal;font-weight:700;font-display:swap;
  src:url(fonts/montserrat-700-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:'Montserrat';font-style:normal;font-weight:700;font-display:swap;
  src:url(fonts/montserrat-700-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

:root{
  --azul:#0d1f2d;
  --petroleo:#175c6e;
  --gris:#8b9aa5;
  --gris-claro:#eef1f3;
  --lima:#c2d94b;
  --texto:#1b2a35;
  --blanco:#fff;
  --borde:#dfe4e8;
  --ancho:1180px;
}

*{box-sizing:border-box;margin:0;padding:0}

html{
  scroll-behavior:smooth;
  overflow-x:hidden;
  -webkit-text-size-adjust:100%;
}

body{
  font-family:'Montserrat',-apple-system,'Segoe UI',sans-serif;
  color:var(--texto);
  background:var(--blanco);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  width:100%;
  max-width:100vw;
  overflow-wrap:break-word;
  word-break:break-word;
}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

.wrap{max-width:var(--ancho);margin:0 auto;padding:0 24px}

h1,h2,h3{line-height:1.15;font-weight:700;letter-spacing:-0.01em}
h1{font-size:clamp(2rem,5vw,3.4rem)}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem)}
h3{font-size:1.1rem}

section{padding:84px 0}
section.gris{background:var(--gris-claro)}

/* ---------- header ---------- */
.header{
  position:sticky;top:0;z-index:50;
  background:rgba(13,31,45,.96);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header .wrap{display:flex;align-items:center;gap:32px;height:74px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;letter-spacing:.14em;font-size:1.05rem}
.logo img{height:30px;filter:invert(1)}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{color:#cfd8de;font-size:.87rem;font-weight:500;letter-spacing:.03em}
.nav a:hover{color:#fff}

.btn{
  display:inline-block;background:var(--lima);color:var(--azul);
  padding:13px 24px;border-radius:2px;font-weight:700;
  font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;
  border:none;cursor:pointer;transition:background .15s;
}
.btn:hover{background:#d3e964}
.btn-linea{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45)}
.btn-linea:hover{background:rgba(255,255,255,.1)}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:82vh;display:flex;align-items:flex-end;
  background:var(--azul);
}
.hero img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;opacity:.5;
}
.hero .wrap{position:relative;padding-top:120px;padding-bottom:80px}
.hero h1{color:#fff;max-width:15ch}
.hero p{color:#d5dde2;font-size:1.12rem;max-width:52ch;margin:22px 0 32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- efectos ---------- */

/* aparición al hacer scroll */
.rev{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
.rev.vis{opacity:1;transform:none}

/* el header se compacta y se opaca al bajar */
.header{transition:height .25s ease,background .25s ease}
.header.chico{background:rgba(13,31,45,.99);box-shadow:0 1px 14px rgba(0,0,0,.28)}
.header.chico .wrap{height:60px}

/* zoom lento sobre las fotos */
.zoom{overflow:hidden}
.zoom img{transition:transform .8s cubic-bezier(.2,.7,.3,1)}
.zoom:hover img{transform:scale(1.045)}

/* las tarjetas se elevan y marcan el borde superior */
.card{position:relative;transition:border-color .2s,transform .2s,box-shadow .2s}
.card::after{
  content:"";position:absolute;left:-1px;right:-1px;top:-1px;height:2px;
  background:var(--petroleo);transform:scaleX(0);transform-origin:left;
  transition:transform .3s cubic-bezier(.2,.7,.3,1);
}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(13,31,45,.09)}
.card:hover::after{transform:scaleX(1)}

/* la flecha del enlace se corre */
.mas::after{content:" →";transition:margin-left .2s}
.card:hover .mas::after{margin-left:5px}

/* el hero respira muy despacio */
.hero img{animation:deriva 26s ease-in-out infinite alternate}
@keyframes deriva{from{transform:scale(1)}to{transform:scale(1.06)}}

/* subrayado que crece en los enlaces del menú */
.nav a{position:relative;padding-bottom:3px}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--lima);transform:scaleX(0);transform-origin:right;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.nav a:hover::after{transform:scaleX(1);transform-origin:left}

/* el paso del proceso marca su línea superior */
.paso{transition:border-color .2s}
.paso:hover{border-color:var(--lima)}

.btn{transition:background .15s,transform .15s}
.btn:hover{transform:translateY(-2px)}
.wa{transition:transform .2s}
.wa:hover{transform:scale(1.07)}

/* quien pida menos movimiento, no ve nada de esto */
@media(prefers-reduced-motion:reduce){
  .rev{opacity:1;transform:none;transition:none}
  .hero img{animation:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* ---------- encabezado de páginas internas ---------- */
.pagehero{background:var(--azul);color:#fff;padding:70px 0 60px}
.pagehero h1{color:#fff;font-size:clamp(1.8rem,4vw,2.9rem)}
.pagehero p{color:#c3ced6;max-width:60ch;margin-top:18px}
.miga{font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--gris);margin-bottom:18px}
.miga a:hover{color:#fff}

/* bloque de línea/producto */
.linea{border-top:1px solid var(--borde);padding:38px 0}
.linea:last-child{border-bottom:1px solid var(--borde)}
.linea h3{font-size:1.35rem;margin-bottom:12px}
.linea p{color:#4a5c68;max-width:70ch}
.lista{list-style:none;margin-top:16px}
.lista li{padding-left:18px;position:relative;font-size:.94rem;color:#4a5c68;padding-top:5px}
.lista li::before{content:"";position:absolute;left:0;top:15px;width:7px;height:1px;background:var(--petroleo)}

/* llamada final */
.cierre{background:var(--gris-claro);text-align:center}
.cierre h2{margin-bottom:14px}
.cierre p{color:#4a5c68;max-width:56ch;margin:0 auto 26px}

/* ---------- preguntas frecuentes ---------- */
.faq{max-width:820px}
.faq details{border-bottom:1px solid var(--borde)}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 40px 22px 0;position:relative;
  font-weight:700;font-size:1.02rem;color:var(--azul);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:8px;top:50%;width:10px;height:10px;
  border-right:2px solid var(--petroleo);border-bottom:2px solid var(--petroleo);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s;
}
.faq details[open] summary::after{transform:translateY(-20%) rotate(-135deg)}
.faq summary:hover{color:var(--petroleo)}
.faq .resp{padding:0 0 24px;color:#4a5c68;font-size:.96rem;max-width:70ch}
.faq .resp p+p{margin-top:12px}

/* ---------- grillas ---------- */
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

.card{
  background:#fff;border:1px solid var(--borde);
  padding:32px 26px;transition:border-color .15s;
}
.card:hover{border-color:var(--petroleo)}
.card h3{margin-bottom:10px}
.card p{font-size:.94rem;color:#4a5c68}
.card .mas{
  display:inline-block;margin-top:16px;font-size:.8rem;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;color:var(--petroleo);
}

.intro{max-width:62ch;margin-bottom:46px}
.intro p{margin-top:16px;color:#4a5c68}

/* ---------- enkel ---------- */
.enkel{background:var(--azul);color:#fff}
.enkel .wrap{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.enkel h2{color:#fff}
.enkel p{color:#c3ced6;margin-top:18px}
.specs{list-style:none;margin-top:26px}
.specs li{
  padding:13px 0;border-bottom:1px solid rgba(255,255,255,.14);
  font-size:.94rem;color:#dde4e9;
}
.specs li span{color:var(--lima);font-weight:700;margin-right:10px}

/* ---------- proceso ---------- */
.pasos{counter-reset:p;display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.paso{border-top:2px solid var(--petroleo);padding-top:18px}
.paso .n{font-size:.78rem;font-weight:700;color:var(--petroleo);letter-spacing:.1em}
.paso h3{font-size:1rem;margin:6px 0 8px}
.paso p{font-size:.88rem;color:#4a5c68}

/* ---------- sistemas ---------- */
.sistemas{display:flex;gap:14px;flex-wrap:wrap}
.sistema{
  border:1px solid var(--borde);padding:18px 28px;
  font-weight:700;letter-spacing:.1em;font-size:.9rem;color:var(--azul);
}

/* ---------- obras ---------- */
.obra img{width:100%;height:420px;object-fit:cover}
.obra figcaption{font-size:.86rem;color:#5a6a75;padding-top:12px}

/* ---------- contacto ---------- */
.contacto{background:var(--azul);color:#fff}
.contacto .wrap{display:grid;grid-template-columns:1fr 1fr;gap:60px}
.contacto h2{color:#fff}
.contacto p{color:#c3ced6;margin-top:16px}
.datos{list-style:none;margin-top:30px}
.datos li{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:.95rem}
.datos strong{display:block;font-size:.75rem;letter-spacing:.1em;color:var(--gris);text-transform:uppercase;margin-bottom:3px}

form{display:grid;gap:14px}
input,select,textarea{
  width:100%;padding:14px;border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.06);color:#fff;font-family:inherit;font-size:.95rem;border-radius:2px;
}
input::placeholder,textarea::placeholder{color:#8fa0ac}
select option{color:#1b2a35}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--lima)}

/* ---------- footer ---------- */
.footer{background:#081620;color:#8b9aa5;padding:44px 0;font-size:.86rem}
.footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer a:hover{color:#fff}

/* ---------- whatsapp flotante ---------- */
.wa{
  position:fixed;right:22px;bottom:22px;z-index:60;
  width:56px;height:56px;border-radius:50%;background:#25d366;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 16px rgba(0,0,0,.25);
}
.wa svg{width:30px;height:30px;fill:#fff}

/* ---------- responsive ---------- */
.btn-header{display:none}

@media(max-width:900px){
  .nav{display:none}
  .btn-header{display:inline-block;margin-left:auto;padding:11px 18px;font-size:.72rem}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .pasos{grid-template-columns:repeat(2,1fr)}
  .enkel .wrap,.contacto .wrap{grid-template-columns:1fr;gap:40px}
  section{padding:60px 0}
}

@media(max-width:560px){
  .wrap{padding:0 18px}
  .header .wrap{height:64px;gap:12px}
  .logo{font-size:.95rem;letter-spacing:.1em}
  .logo img{height:24px}

  .g2,.g3,.g4,.pasos{grid-template-columns:1fr}
  .grid{gap:16px}

  /* hero: alto real del viewport, sin recorte lateral */
  .hero{min-height:auto}
  .hero .wrap{padding-top:90px;padding-bottom:56px}
  .hero h1{max-width:none;font-size:1.85rem}
  .hero p{font-size:1rem;margin:16px 0 26px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{text-align:center}

  section{padding:48px 0}
  .intro{margin-bottom:28px}
  .card{padding:24px 20px}
  .obra img{height:260px}

  /* la perfilería se lee mejor a lo ancho completo en mano */
  .sistema{flex:1 1 100%;text-align:center;padding:14px 18px}
  .specs li{font-size:.9rem}
  .datos li{font-size:.92rem}
}

/* nada puede empujar el ancho de la página */
img,video,iframe,table,pre{max-width:100%}
.hero,.header,section,footer{max-width:100vw;overflow-x:clip}