/* ==========================================================================
   Gasfiter en Las Condes — Design System
   Plantilla maestra — reutilizable para futuras comunas
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Arvo:wght@400;700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root{
  /* Color — inspirado en el oficio: cobre, bronce, pátina */
  --ink:        #2A251F;
  --ink-soft:   #4A4237;
  --paper:      #FFFFFF;
  --paper-2:    #F1EEE6;
  --copper:     #B36A3C;
  --copper-dark:#8F5230;
  --patina:     #5C7A6E;
  --brass:      #C9A227;
  --stone:      #ADA593;
  --navy:       #1C3144;
  --navy-dark:  #12212E;
  --white:      #FFFFFF;

  --font-display: 'Arvo', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --radius: 6px;
  --radius-lg: 14px;
  --shadow: 0 4px 20px rgba(42,37,31,0.08);
  --shadow-lg: 0 12px 40px rgba(42,37,31,0.14);
  --maxw: 1120px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.15;margin:0 0 .5em;font-weight:700;}
h1{font-size:clamp(2.2rem,4.5vw,3.4rem);}
h2{font-size:clamp(1.7rem,3vw,2.4rem);}
h3{font-size:1.3rem;}
p{margin:0 0 1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
section{padding:80px 0;}
@media(max-width:720px){section{padding:56px 0;}}

/* Focus visibility */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:3px solid var(--copper);outline-offset:2px;
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* Eyebrow label */
.eyebrow{
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--copper-dark);
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
}
.eyebrow::before{content:'';width:18px;height:2px;background:var(--copper);display:inline-block;}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:var(--font-body);font-weight:600;font-size:.98rem;
  padding:14px 26px;border-radius:var(--radius);border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);}
.btn-whatsapp{background:var(--patina);color:var(--white);box-shadow:var(--shadow);}
.btn-whatsapp:hover{background:#4d685e;}
.btn-phone{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-phone:hover{background:var(--ink);color:var(--paper);}
.btn-copper{background:var(--copper);color:var(--white);box-shadow:var(--shadow);}
.btn-copper:hover{background:var(--copper-dark);}
.btn-block{width:100%;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--paper-2);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;max-width:var(--maxw);margin:0 auto;
}
.logo{font-family:var(--font-display);font-weight:700;font-size:1.25rem;color:var(--ink);display:flex;align-items:center;gap:10px;}
.logo .logo-mark{color:var(--copper);}
.logo small{display:block;font-family:var(--font-mono);font-size:.62rem;letter-spacing:.06em;color:var(--ink-soft);font-weight:500;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:32px;}
.main-nav a{font-weight:600;font-size:.95rem;position:relative;padding:4px 0;}
.main-nav a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--copper);transition:width .2s ease;}
.main-nav a:hover::after,.main-nav a.active::after{width:100%;}
.header-cta{display:flex;align-items:center;gap:12px;}
.header-phone{font-family:var(--font-mono);font-weight:600;font-size:.92rem;display:flex;align-items:center;gap:6px;}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px;}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;transition:.2s;}

@media(max-width:900px){
  .main-nav{
    position:fixed;inset:64px 0 0 0;background:var(--paper);
    flex-direction:column;justify-content:flex-start;padding:32px 24px;gap:24px;
    transform:translateX(100%);transition:transform .25s ease;
  }
  .main-nav.open{transform:translateX(0);}
  .nav-toggle{display:block;}
  .header-phone{display:none;}
}

/* ===== Hero ===== */
.hero{padding:64px 0 40px;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;}}
.hero h1{margin-bottom:.4em;}
.hero .lede{font-size:1.15rem;color:var(--ink-soft);max-width:44ch;margin-bottom:2em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:2em;}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px;font-family:var(--font-mono);font-size:.82rem;color:var(--ink-soft);}
.hero-trust li{display:flex;align-items:center;gap:8px;}
.hero-trust li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--patina);}

/* Pipe illustration signature */
.pipe-art{width:100%;height:auto;}

/* Hero photo */
.hero-photo-wrap{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
  border:6px solid var(--white);
  outline:2px solid var(--paper-2);
}
.hero-photo-wrap::after{
  content:'';position:absolute;inset:0;
  box-shadow:inset 0 0 0 3px var(--copper);
  border-radius:8px;
  pointer-events:none;
  opacity:.55;
}
.hero-photo{width:100%;height:100%;aspect-ratio:719/426;object-fit:cover;display:block;}
.hero-photo-tag{
  position:absolute;left:18px;bottom:18px;
  background:var(--ink);color:var(--paper);
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.04em;
  padding:8px 14px;border-radius:100px;
  display:flex;align-items:center;gap:8px;
  box-shadow:var(--shadow);
}
.hero-photo-tag::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--brass);}
@media(max-width:900px){.hero-photo-wrap{margin-top:8px;}}

/* Pipe divider — signature element between sections */
.pipe-divider{width:100%;height:40px;display:block;margin:0;}
.pipe-divider path{fill:none;stroke:var(--copper);stroke-width:2;opacity:.5;}
.pipe-divider circle{fill:var(--copper);}

/* ===== Trust strip ===== */
.trust-strip{background:var(--ink);color:var(--paper);padding:28px 0;}
.trust-strip .container{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;}
.trust-strip .item{display:flex;align-items:center;gap:12px;font-size:.92rem;flex:1 1 200px;}
.trust-strip .item strong{display:block;font-family:var(--font-display);font-size:1.1rem;color:var(--brass);}

/* ===== Cards / services ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
@media(max-width:900px){.grid-3{grid-template-columns:1fr;}}
.service-card{
  background:var(--white);border-radius:var(--radius-lg);padding:32px 28px;
  box-shadow:var(--shadow);border:1px solid var(--paper-2);
  display:flex;flex-direction:column;height:100%;transition:transform .2s ease, box-shadow .2s ease;
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.service-card .icon{width:52px;height:52px;margin-bottom:18px;color:var(--copper);}
.service-card h3{margin-bottom:.4em;}
.service-card p{color:var(--ink-soft);font-size:.95rem;flex-grow:1;}
.service-card .card-link{margin-top:18px;font-weight:600;color:var(--copper-dark);display:inline-flex;align-items:center;gap:6px;font-size:.92rem;}
.service-card .card-link svg{width:14px;height:14px;transition:transform .15s;}
.service-card:hover .card-link svg{transform:translateX(3px);}

/* Section heading block */
.section-head{max-width:640px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* Two column content */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
@media(max-width:900px){.split{grid-template-columns:1fr;}}

/* Steps list */
.steps{counter-reset:step;display:grid;gap:22px;}
.step{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;}
.step .num{
  font-family:var(--font-mono);font-weight:600;color:var(--copper);
  background:var(--white);border:2px solid var(--copper);border-radius:50%;
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}

/* FAQ */
.faq-item{border-bottom:1px solid var(--paper-2);padding:20px 0;}
.faq-item summary{cursor:pointer;font-weight:600;font-family:var(--font-display);font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:'+';font-size:1.4rem;color:var(--copper);flex-shrink:0;transition:transform .2s;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item p{margin-top:14px;color:var(--ink-soft);}

/* CTA banner */
.cta-banner{
  background:linear-gradient(135deg,var(--ink) 0%,#3a3227 100%);
  color:var(--paper);border-radius:var(--radius-lg);padding:52px 44px;
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:28px;
}
.cta-banner h2{color:var(--white);margin-bottom:.2em;}
.cta-banner p{color:var(--stone);margin:0;}
.cta-banner .actions{display:flex;gap:14px;flex-wrap:wrap;}

/* Blog cards */
.blog-card{
  background:var(--white);border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--paper-2);box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .2s ease;
}
.blog-card:hover{transform:translateY(-4px);}
.blog-card .tag{
  font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--patina);padding:22px 24px 0;
}
.blog-card .body{padding:10px 24px 24px;flex-grow:1;display:flex;flex-direction:column;}
.blog-card h3{margin-bottom:.4em;}
.blog-card p{color:var(--ink-soft);font-size:.92rem;flex-grow:1;}
.blog-card .read-more{margin-top:14px;font-weight:600;color:var(--copper-dark);font-size:.9rem;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
@media(max-width:760px){.grid-2{grid-template-columns:1fr;}}

/* Article */
.article-header{padding:56px 0 20px;}
.article-header .tag{font-family:var(--font-mono);color:var(--patina);text-transform:uppercase;letter-spacing:.06em;font-size:.78rem;}
.article-body{max-width:68ch;margin:0 auto;font-size:1.05rem;}
.article-body h2{margin-top:1.6em;}
.article-body ul{margin:0 0 1.4em;padding-left:1.4em;list-style:disc;}
.article-body li{margin-bottom:.5em;}
.article-body blockquote{
  border-left:3px solid var(--copper);margin:2em 0;padding:.4em 0 .4em 1.4em;
  font-family:var(--font-display);font-size:1.15rem;color:var(--ink-soft);font-style:italic;
}
.byline{display:flex;gap:14px;align-items:center;color:var(--ink-soft);font-size:.9rem;margin-top:18px;}

/* Contact */
.contact-panel{background:var(--white);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow);border:1px solid var(--paper-2);}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px;}
.form-row input,.form-row textarea,.form-row select{
  width:100%;padding:13px 14px;border:1.5px solid var(--paper-2);border-radius:var(--radius);
  font-family:var(--font-body);font-size:.96rem;background:var(--paper);color:var(--ink);
}
.form-row input:focus,.form-row textarea:focus,.form-row select:focus{border-color:var(--copper);outline:none;}
.contact-direct{display:grid;gap:18px;}
.contact-direct .item{
  display:flex;align-items:center;gap:16px;background:var(--white);border-radius:var(--radius-lg);
  padding:22px 24px;border:1px solid var(--paper-2);box-shadow:var(--shadow);
}
.contact-direct .item .ico{width:42px;height:42px;color:var(--copper);flex-shrink:0;}
.contact-direct .item strong{display:block;font-family:var(--font-mono);font-size:1.05rem;}
.contact-direct .item span{color:var(--ink-soft);font-size:.88rem;}

/* Coverage list */
.comuna-list{display:flex;flex-wrap:wrap;gap:10px;}
.comuna-list span{
  font-family:var(--font-mono);font-size:.82rem;background:var(--white);border:1px solid var(--paper-2);
  padding:8px 14px;border-radius:100px;
}

/* Footer */
.site-footer{background:var(--ink);color:var(--stone);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:48px;}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h4{color:var(--paper);font-family:var(--font-mono);font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:1em;}
.footer-grid a{color:var(--stone);display:block;padding:6px 0;font-size:.92rem;}
.footer-grid a:hover{color:var(--brass);}
.footer-logo{font-family:var(--font-display);font-size:1.3rem;color:var(--paper);margin-bottom:12px;}
.footer-bottom{border-top:1px solid #453d30;padding-top:24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:.82rem;}

/* Floating WhatsApp button */
.wa-float{
  position:fixed;right:22px;bottom:22px;z-index:200;
  background:var(--patina);color:var(--white);width:60px;height:60px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);
  transition:transform .15s ease;
}
.wa-float:hover{transform:scale(1.08);}
.wa-float svg{width:28px;height:28px;}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease, transform .5s ease;}
.reveal.in{opacity:1;transform:none;}

/* ===== Top utility bar ===== */
.topbar{background:var(--navy);color:#fff;}
.topbar-inner{
  max-width:var(--maxw);margin:0 auto;padding:9px 24px;
  display:flex;justify-content:flex-end;align-items:center;gap:26px;
  font-family:var(--font-mono);font-size:.8rem;
}
.topbar a{display:inline-flex;align-items:center;gap:7px;color:#fff;opacity:.92;}
.topbar a:hover{opacity:1;color:var(--brass);}
.topbar svg{width:14px;height:14px;flex-shrink:0;}
@media(max-width:640px){.topbar-inner{justify-content:center;gap:18px;font-size:.74rem;}}

/* ===== Full-width hero with photo + gradient ===== */
.hero-full{position:relative;min-height:78vh;max-height:640px;display:flex;align-items:center;overflow:hidden;color:#fff;}
.hero-full .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;z-index:0;}
.hero-full .hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg, rgba(18,15,10,.88) 0%, rgba(18,15,10,.72) 38%, rgba(18,15,10,.34) 65%, rgba(18,15,10,.05) 100%);
}
.hero-full .container{position:relative;z-index:2;}
.hero-full-content{max-width:560px;}
.hero-full h1{color:#fff;}
.hero-full .eyebrow{color:var(--brass);}
.hero-full .eyebrow::before{background:var(--brass);}
.hero-full .lede{color:#EFECE3;}
.hero-full .hero-trust{color:#EFECE3;}
.hero-full .hero-trust li::before{background:var(--brass);}
.hero-full .btn-phone{border-color:#fff;color:#fff;}
.hero-full .btn-phone:hover{background:#fff;color:var(--ink);}
@media(max-width:720px){.hero-full{min-height:64vh;}.hero-full .hero-overlay{background:linear-gradient(180deg, rgba(18,15,10,.5) 0%, rgba(18,15,10,.88) 55%, rgba(18,15,10,.94) 100%);}}

/* ===== Service feature cards (with photo) ===== */
.service-feature{
  background:var(--white);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);border:1px solid var(--paper-2);
  display:flex;flex-direction:column;height:100%;transition:transform .2s ease, box-shadow .2s ease;
}
.service-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
.service-feature .photo-wrap{position:relative;aspect-ratio:4/3;overflow:hidden;}
.service-feature .photo-wrap img{width:100%;height:100%;object-fit:cover;display:block;}
.service-feature .photo-wrap .num{
  position:absolute;top:14px;left:14px;background:var(--navy);color:#fff;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;
  padding:6px 12px;border-radius:100px;
}
.service-feature .body{padding:26px 26px 28px;display:flex;flex-direction:column;flex-grow:1;}
.service-feature h3{margin-bottom:.5em;}
.service-feature p{color:var(--ink-soft);font-size:.94rem;flex-grow:1;margin-bottom:1.2em;}
.service-feature .ver-mas{
  font-weight:600;color:var(--copper-dark);display:inline-flex;align-items:center;gap:6px;font-size:.92rem;
}
.service-feature .ver-mas svg{width:14px;height:14px;transition:transform .15s;}
.service-feature:hover .ver-mas svg{transform:translateX(3px);}

/* ===== Map section ===== */
.map-section{padding-bottom:0;}
.map-full{
  width:100vw;position:relative;left:50%;right:50%;
  margin-left:-50vw;margin-right:-50vw;display:block;
}
.map-frame{
  width:100%;height:336px;border:0;
  filter:grayscale(.2) contrast(1.02);
  display:block;
}

/* Utility */
.text-center{text-align:center;}
.mt-0{margin-top:0;}
.badge{
  display:inline-block;background:var(--paper-2);color:var(--ink-soft);
  font-family:var(--font-mono);font-size:.72rem;padding:5px 10px;border-radius:100px;margin-bottom:8px;
}