/* =========================================================
   GENERADORES ANDINOS SAC
   Tokens: piedra (stone), tinta (ink), acero (steel), oxido (rust)
   ========================================================= */
:root{
  --stone-050: #F3F1EC;
  --stone-100: #EAE7DF; 
  --stone-200: #DCD8CD;
  --line:       #CFCABD;
  --ink-900:   #17181A;
  --ink-700:   #2B2C2E;
  --ink-500:   #55564F;
  --paper:     #FBFAF7;
  --steel-600: #33505F;
  --steel-700: #22394450;
  --steel-050: #E7EEF1;
  --rust-500:  #C1662B;
  --rust-600:  #A6551F;
  --focus:     #1E6FA8;

  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --container: 1180px;
  --radius: 2px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink-700);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{
  font-family: var(--font-display);
  color: var(--ink-900);
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 1.08;
  margin: 0 0 .5em;
  font-weight: 600;
}
p{ margin: 0 0 1em; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; }

:focus-visible{
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

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

.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--rust-600);
  margin-bottom: 14px;
}
.eyebrow::before{
  content:"";
  width: 22px; height:2px;
  background: var(--rust-500);
  display:inline-block;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 14px 22px;
  border: 1.5px solid var(--ink-900);
  color: var(--ink-900);
  background: transparent;
  transition: background .15s ease, color .15s ease, transform .15s ease;
  cursor:pointer;
}
.btn:hover{ background: var(--ink-900); color: var(--paper); }
.btn.primary{ background: var(--ink-900); color: var(--paper); }
.btn.primary:hover{ background: var(--rust-600); border-color: var(--rust-600); }
.btn.ghost-light{ border-color: rgba(255,255,255,.55); color:#fff; }
.btn.ghost-light:hover{ background:#fff; color: var(--ink-900); }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(251,250,247,.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height: 48px; width:auto; }
.brand-text{ font-family: var(--font-display); line-height:1; }
.brand-text .b1{ font-size: 16px; letter-spacing:.03em; color: var(--ink-900); font-weight:600;}
.brand-text .b2{ font-size: 10.5px; letter-spacing:.18em; color: var(--rust-600); font-family: var(--font-mono); text-transform: uppercase; }

.main-nav ul{ display:flex; gap: 30px; }
.main-nav a{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing:.08em;
  text-transform: uppercase;
  color: var(--ink-700);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover, .main-nav a.active{ border-color: var(--rust-500); color: var(--ink-900); }

.header-actions{ display:flex; align-items:center; gap:18px; }
.header-actions .tel{ font-family: var(--font-mono); font-size: 13px; color: var(--ink-700); white-space:nowrap; }
.nav-toggle{
  display:none;
  width:40px; height:40px;
  border:1px solid var(--ink-900);
  background:none;
  position:relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; position:absolute; left:9px; right:9px; height:2px; background: var(--ink-900);
}
.nav-toggle span{ top:19px; }
.nav-toggle span::before{ top:-7px; }
.nav-toggle span::after{ top:7px; }

/* ---------- Skyline / waveform divider (signature element) ---------- */
.skyline{ display:block; width:100%; height:auto; }
.skyline-light path{ stroke: var(--line); }
.skyline-dark path{ stroke: rgba(255,255,255,.18); }
.skyline-accent path{ stroke: var(--rust-500); }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-color: var(--ink-900);
  background-image:
    linear-gradient(rgba(23,24,26,.50), rgba(23,24,26,.55)),
    url('../img/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--stone-050);
  overflow:hidden;
}
.hero .wrap{
  padding-top: 100px;
  padding-bottom: 64px;
  position:relative;
  z-index:2;
}
.hero-kicker{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color: var(--rust-500);
  margin-bottom: 20px;
  display:flex; align-items:center; gap:10px;
}
.hero h1{
  color:#fff;
  font-size: clamp(34px, 5.4vw, 68px);
  max-width: 16ch;
  margin-bottom: 22px;
}
.hero .lead{
  color: var(--stone-200);
  font-size: 18px;
  max-width: 56ch;
  margin-bottom: 36px;
}
.hero-ctas{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom: 56px;}
.hero-stats{
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
  border-top: 1px solid rgba(255,255,255,.18);
  padding-top: 28px;
  max-width: 720px;
}
.hero-stats .stat b{
  display:block; font-family: var(--font-display); font-size: 30px; color:#fff;
}
.hero-stats .stat span{
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing:.08em; text-transform:uppercase; color: var(--stone-200);
}
.hero-bg-peaks{
  position:absolute; left:0; right:0; bottom:-2px; z-index:1; opacity:.5;
}

/* ---------- Section scaffolding ---------- */
section{ padding: 88px 0; }
section.tight{ padding: 56px 0; }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end; gap:32px;
  margin-bottom: 48px; flex-wrap:wrap;
}
.section-head h2{ font-size: clamp(26px,3.4vw,40px); max-width: 18ch; margin:0; }
.section-head .desc{ max-width: 44ch; color: var(--ink-500); margin:0; }

.bg-stone{ background: var(--stone-100); }
.bg-ink{ background: var(--ink-900); color: var(--stone-100); }
.bg-ink h2, .bg-ink h3{ color:#fff; }
.bg-ink .eyebrow{ color: var(--rust-500); }
.bg-ink .project-card h3{ color: var(--ink-900); }

/* ---------- Two pillars (home) ---------- */
.pillars{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.pillar{
  background: var(--paper);
  padding: 40px 36px;
  position:relative;
}
.pillar .tag{
  font-family: var(--font-mono); font-size:11.5px; letter-spacing:.1em; text-transform:uppercase;
  color: var(--paper); background: var(--ink-900); padding:4px 10px; display:inline-block; margin-bottom:22px;
}
.pillar.hybrid .tag{ background: var(--rust-600); }
.pillar h3{ font-size: 26px; margin-bottom: 14px; }
.pillar p{ color: var(--ink-500); }
.pillar ul{ margin-top: 18px; }
.pillar li{
  font-size: 14.5px; color: var(--ink-700);
  padding: 9px 0 9px 22px;
  border-top: 1px solid var(--stone-200);
  position: relative;
}
.pillar li:first-child{ border-top:none; }
.pillar li::before{
  content:"—"; position:absolute; left:0; color: var(--rust-500);
}
.pillar .btn{ margin-top: 24px; }

/* ---------- Service cards ---------- */
.services-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.service-card{
  background: var(--paper);
  padding: 32px;
}
.service-card .tag{
  font-family: var(--font-mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase; color: var(--rust-600); margin-bottom:10px; display:block;
}
.service-card h3{ font-size: 20px; margin-bottom: 12px; }
.service-card p{ color: var(--ink-500); font-size: 14.8px; margin-bottom:0; }

/* Full service detail blocks (servicios.html) */
.service-detail{
  display:grid;
  grid-template-columns: 0.9fr 1.4fr;
  gap: 48px;
  padding: 56px 0;
  border-top: 1px solid var(--line);
  align-items:start;
}
.service-detail:first-of-type{ border-top:none; }
.service-detail .num{
  font-family: var(--font-mono); color: var(--rust-500); font-size:13px; letter-spacing:.1em;
}
.service-detail h3{ font-size: clamp(22px,2.6vw,30px); margin-top:8px; }
.service-detail .body p{ color: var(--ink-500); }
.service-detail .body ul{ margin-top: 14px; }
.service-detail .body li{
  padding-left: 20px; position:relative; margin-bottom: 8px; color: var(--ink-700); font-size: 15px;
}
.service-detail .body li::before{ content:"›"; position:absolute; left:0; color: var(--rust-500); font-weight:700; }

/* ---------- Projects ---------- */
.projects-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.project-card{
  border: 1px solid var(--line);
  background: var(--paper);
  display:flex; flex-direction:column;
}
.project-card .thumb{
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--steel-050), var(--stone-100));
  display:flex; align-items:center; justify-content:center;
  border-bottom: 1px solid var(--line);
}
.project-card .thumb svg{ width: 56%; opacity:.85; }
.project-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.project-card .content{ padding: 22px; display:flex; flex-direction:column; flex:1; }
.project-card .tag{ font-family: var(--font-mono); font-size:11px; letter-spacing:.08em; text-transform:uppercase; color: var(--rust-600); margin-bottom:8px;}
.project-card h3{ font-size: 18px; margin-bottom:10px; }
.project-card p{ font-size: 14px; color: var(--ink-500); flex:1; }
.project-card .meta{
  display:flex; justify-content:space-between; font-family: var(--font-mono); font-size:11.5px; color: var(--ink-500);
  border-top: 1px dashed var(--line); padding-top: 12px; margin-top:12px;
}
.placeholder-note{
  border: 1px dashed var(--rust-500);
  background: var(--rust-500)10;
  color: var(--rust-600);
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 10px 14px;
  margin-bottom: 32px;
  display:inline-block;
}

/* ---------- CTA band ---------- */
.cta-band{
  background: var(--ink-900);
  color:#fff;
  padding: 72px 0;
  text-align:center;
}
.cta-band h2{ color:#fff; font-size: clamp(26px,3.6vw,42px); max-width: 22ch; margin: 0 auto 16px; }
.cta-band p{ color: var(--stone-200); max-width: 52ch; margin:0 auto 32px; }
.cta-band .ctas{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* ---------- About page ---------- */
.about-grid{ display:grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items:start; }
.value-list{ display:grid; gap: 22px; margin-top: 24px; }
.value-list .item{ border-top:1px solid var(--line); padding-top:18px; }
.value-list h4{ font-size:16px; margin-bottom:6px; }
.value-list p{ color: var(--ink-500); font-size:14.5px; margin:0; }

.fact-panel{
  background: var(--stone-100);
  border: 1px solid var(--line);
  padding: 30px;
  font-family: var(--font-mono);
  font-size: 13.5px;
}
.fact-panel .row{ display:flex; justify-content:space-between; padding: 12px 0; border-top: 1px dashed var(--stone-200); gap: 12px;}
.fact-panel .row:first-child{ border-top:none; }
.fact-panel .row span:first-child{ color: var(--ink-500); }
.fact-panel .row span:last-child{ color: var(--ink-900); text-align:right; }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.contact-card{
  border: 1px solid var(--line); padding: 26px; margin-bottom: 16px;
}
.contact-card .k{ font-family: var(--font-mono); font-size:11.5px; letter-spacing:.1em; text-transform:uppercase; color: var(--rust-600); display:block; margin-bottom:8px; }
.contact-card .v{ font-size: 18px; color: var(--ink-900); font-family: var(--font-display); text-transform:none; letter-spacing:0; }

form.contact-form{ display:grid; gap: 16px; }
.contact-form label{ font-family: var(--font-mono); font-size:12px; letter-spacing:.08em; text-transform:uppercase; color: var(--ink-500); display:block; margin-bottom:6px; }
.contact-form input, .contact-form textarea, .contact-form select{
  width:100%; padding: 13px 14px; border:1px solid var(--line); background: var(--paper);
  font-family: var(--font-body); font-size:15px; color: var(--ink-900);
}
.contact-form textarea{ min-height: 130px; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus{ border-color: var(--ink-900); }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink-900); color: var(--stone-200); padding-top: 0; }
.footer-main{ padding: 64px 0 40px; display:grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; }
.footer-brand img{ height: 46px; margin-bottom: 16px; }
.footer-brand p{ color: var(--stone-200); font-size: 14px; max-width: 34ch; }
.footer-col h5{
  font-family: var(--font-mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase; color: var(--rust-500);
  margin-bottom: 18px;
}
.footer-col li{ margin-bottom: 10px; font-size: 14.5px; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{
  border-top: 1px solid rgba(255,255,255,.14);
  padding: 20px 0;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  font-family: var(--font-mono); font-size: 11.5px; color: var(--stone-200);
}

/* ---------- Whatsapp float ---------- */
.wa-float{
  position:fixed; right:22px; bottom:22px; z-index: 200;
  width:56px; height:56px; border-radius:50%;
  background: var(--rust-500);
  display:flex; align-items:center; justify-content:center;
  box-shadow: 0 8px 20px rgba(0,0,0,.25);
}
.wa-float svg{ width:26px; height:26px; fill:#fff; }
.wa-float:hover{ background: var(--rust-600); }

/* ---------- Reveal on scroll ---------- */
.reveal{ opacity:0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:none; }

/* ---------- Utilities ---------- */
.mt-0{ margin-top:0; }
.text-center{ text-align:center; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 980px){
  .main-nav, .header-actions .tel{ display:none; }
  .nav-toggle{ display:block; }
  .site-header.open .main-nav{
    display:block; position:absolute; top:100%; left:0; right:0;
    background: var(--paper); border-bottom:1px solid var(--line); padding: 12px 24px 20px;
  }
  .site-header.open .main-nav ul{ flex-direction:column; gap:4px; }
  .site-header.open .main-nav a{ display:block; padding: 12px 0; }
  .pillars, .services-grid{ grid-template-columns: 1fr; }
  .service-detail{ grid-template-columns: 1fr; gap: 18px; }
  .projects-grid{ grid-template-columns: 1fr; }
  .about-grid, .contact-grid{ grid-template-columns: 1fr; }
  .footer-main{ grid-template-columns: 1fr; }
  .hero-stats{ grid-template-columns: 1fr; gap: 16px; }
}

/* ---------- Project image carousel ---------- */
.thumb.carousel{ position:relative; overflow:hidden; }
.carousel-track{
  display:flex;
  height:100%;
  transition: transform .4s ease;
}
.carousel-track img{
  width:100%; height:100%; flex-shrink:0;
  object-fit:cover;
}
.car-btn{
  position:absolute; top:50%; transform:translateY(-50%);
  width:32px; height:32px; border-radius:50%;
  background: rgba(23,24,26,.55);
  color:#fff; border:none;
  display:flex; align-items:center; justify-content:center;
  font-size:18px; line-height:1; cursor:pointer;
  z-index:3; transition: background .15s ease;
}
.car-btn:hover{ background: var(--rust-600); }
.car-btn.prev{ left:8px; }
.car-btn.next{ right:8px; }
.car-dots{
  position:absolute; bottom:10px; left:0; right:0;
  display:flex; justify-content:center; gap:6px; z-index:3;
}
.car-dot{
  width:7px; height:7px; border-radius:50%;
  background: rgba(255,255,255,.55);
  border:none; padding:0; cursor:pointer;
}
.car-dot.active{ background:#fff; }