/* ============ Variables ============ */
:root{
  --accent:#3a3a3a;
  --accent-dark:#1a1a1a;
  --dark:#1a1a1a;
  --dark-soft:#2b2b2b;
  --cream:#fbefc6;
  --grey:#efeded;
  --grey-text:#5a5a5a;
  --white:#ffffff;
  --radius:6px;
  --shadow:0 4px 18px rgba(0,0,0,.12);
  --maxw:1180px;
  font-size:16px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--dark);
  background:var(--white);
  line-height:1.55;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;line-height:1.2;margin:0 0 .5em;}
p{margin:0 0 1em;text-align:justify;text-align-last:left;}
.center,.hero-caption,.cta-band p,.card-tags,.form-msg{text-align:center;text-align-last:center;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:64px 0;}
.section-alt{background:var(--grey);}
.section-dark{background:var(--dark);color:#f2f2f2;}
.section-dark h2,.section-dark h3{color:var(--white);}
.eyebrow{
  display:inline-block;
  color:var(--accent);
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  font-size:.8rem;
  margin-bottom:.6em;
}
.section-title{font-size:2rem;margin-bottom:.3em;}
.section-lead{max-width:720px;color:var(--grey-text);}
.center{text-align:center;margin-left:auto;margin-right:auto;}

/* ============ Buttons ============ */
.btn{
  display:inline-block;
  background:var(--accent);
  color:#fff;
  font-weight:700;
  padding:14px 30px;
  border-radius:var(--radius);
  border:none;
  cursor:pointer;
  font-size:1rem;
  transition:background .2s ease,transform .2s ease;
}
.btn:hover{background:var(--accent-dark);transform:translateY(-1px);}
.btn-outline{
  background:transparent;
  border:2px solid var(--white);
  color:var(--white);
}
.btn-outline:hover{background:var(--white);color:var(--dark);}
.btn-dark{background:var(--dark);}
.btn-dark:hover{background:#000;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid #eee;
  backdrop-filter:blur(6px);
}
.header-inner{
  max-width:var(--maxw);margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo img{height:56px;width:auto;}
.main-nav{display:flex;align-items:center;gap:8px;}
.main-nav ul{list-style:none;display:flex;gap:4px;margin:0;padding:0;}
.main-nav a{
  display:block;padding:10px 16px;font-weight:600;border-radius:var(--radius);
  color:var(--dark);transition:color .2s, background .2s;
}
.main-nav a:hover,.main-nav a.active{color:var(--accent);}
.header-cta{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;background:none;border:none;cursor:pointer;padding:8px;
}
.nav-toggle span{display:block;width:26px;height:3px;background:var(--dark);margin:5px 0;transition:.25s;}

@media(max-width:900px){
  .main-nav{
    position:fixed;inset:0 0 0 auto;width:78%;max-width:320px;
    background:var(--white);flex-direction:column;align-items:stretch;
    padding:90px 24px 24px;box-shadow:-8px 0 24px rgba(0,0,0,.15);
    transform:translateX(100%);transition:transform .3s ease;
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav ul{flex-direction:column;gap:0;}
  .main-nav a{padding:14px 8px;border-bottom:1px solid #f0f0f0;}
  .nav-toggle{display:block;}
  .header-inner{padding:10px 16px;gap:10px;}
  .logo img{height:42px;}
  .header-cta .btn{padding:10px 16px;font-size:.85rem;}
}

/* ============ Hero / Slider ============ */
.hero-slider{position:relative;overflow:hidden;height:60vh;min-height:380px;max-height:560px;background:#000;}
.hero-slide{
  position:absolute;inset:0;opacity:0;transition:opacity .8s ease;
}
.hero-slide.active{opacity:1;}
.hero-slide img{width:100%;height:100%;object-fit:cover;}
.hero-slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(0,0,0,.65) 0%,rgba(0,0,0,.15) 55%,rgba(0,0,0,.35) 100%);
}
.hero-caption{
  position:absolute;left:0;right:0;bottom:36px;z-index:2;
  text-align:center;color:#fff;padding:0 24px;
}
.hero-caption h2{color:#fff;font-size:1.6rem;text-shadow:0 2px 8px rgba(0,0,0,.5);}
.hero-dots{position:absolute;bottom:10px;left:0;right:0;display:flex;justify-content:center;gap:8px;z-index:3;}
.hero-dots button{
  width:10px;height:10px;border-radius:50%;border:2px solid #fff;background:transparent;
  padding:0;cursor:pointer;opacity:.7;
}
.hero-dots button.active{background:#fff;opacity:1;}
.hero-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  background:rgba(0,0,0,.35);color:#fff;border:none;width:44px;height:44px;
  border-radius:50%;font-size:1.4rem;cursor:pointer;
}
.hero-arrow.prev{left:16px;}
.hero-arrow.next{right:16px;}

/* ============ History band (home) ============ */
.history-band{
  position:relative;width:100%;
  aspect-ratio:1920/1055;
  background-size:cover;background-position:center;background-repeat:no-repeat;
  display:flex;align-items:flex-end;justify-content:center;
  color:#1a1a1a;text-align:center;
  padding:0 20px 32px;
}
.history-band .history-textbox{
  position:relative;z-index:1;width:100%;max-width:760px;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  border-radius:10px;
  box-shadow:0 12px 34px rgba(0,0,0,.28);
  padding:24px 30px;
}
.history-band h1,.history-band p{color:#1a1a1a;}
.history-band .section-lead{color:#333;}
@media(max-width:700px){
  .history-band{aspect-ratio:3/4;padding:0 16px 22px;}
  .history-band .history-textbox{padding:18px 20px;}
}

/* ============ Section divider (small breathing gap between stacked photo sections) ============ */
.section-divider{padding:40px 24px;background:var(--white);}
.section-divider .eyebrow{margin-bottom:0;}
@media(max-width:600px){.section-divider{padding:26px 24px;}}

/* ============ Mosaic hero (photo montage header) ============ */
.mosaic-hero{
  position:relative;
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(2,1fr);
  gap:4px;height:360px;overflow:hidden;background:#000;
}
.mosaic-hero img{width:100%;height:100%;object-fit:cover;display:block;opacity:.88;}
.mosaic-hero::before{content:"";position:absolute;inset:0;background:rgba(0,0,0,.32);z-index:1;}
.mosaic-textbox{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  z-index:2;text-align:center;color:#fff;
  background:rgba(20,20,20,.6);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  padding:26px 44px;border-radius:10px;
}
.mosaic-textbox .eyebrow{color:#fff;opacity:.85;}
.mosaic-textbox h1{color:#fff;margin:0;font-size:2rem;}
@media(max-width:700px){
  .mosaic-hero{height:260px;}
  .mosaic-textbox{padding:16px 22px;}
  .mosaic-textbox h1{font-size:1.3rem;}
}

/* ============ Compact rotating hero (interior page header) ============ */
.hero-slider.compact{height:340px;min-height:280px;max-height:380px;}
.hero-slider-title{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  z-index:5;text-align:center;color:#fff;
  background:rgba(20,20,20,.55);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  padding:26px 44px;border-radius:10px;
  width:max-content;max-width:90%;
}
.hero-slider-title .eyebrow{color:#fff;opacity:.85;}
.hero-slider-title h1{color:#fff;margin:0;font-size:2rem;}
@media(max-width:700px){
  .hero-slider.compact{height:260px;min-height:230px;}
  .hero-slider-title{padding:16px 22px;}
  .hero-slider-title h1{font-size:1.3rem;}
}

/* ============ Page hero (interior pages) ============ */
.page-hero{
  position:relative;
  background:linear-gradient(rgba(0,0,0,.55),rgba(0,0,0,.55));
  background-size:cover;background-position:center;
  color:#fff;padding:90px 0;text-align:center;
}
.page-hero h1{color:#fff;font-size:2.4rem;}
.back-link{
  position:absolute;top:20px;left:24px;z-index:2;
  display:inline-block;color:#fff;opacity:.8;font-size:.85rem;font-weight:600;
}
.back-link:hover{opacity:1;color:var(--accent);}
@media(max-width:600px){
  .page-hero{padding:52px 0;}
  .page-hero h1{font-size:1.6rem;}
  .section{padding:44px 0;}
  .section-title{font-size:1.5rem;}
  .hero-caption h2{font-size:1.1rem;}
  .hero-caption{bottom:24px;}
  .info-card{padding:22px;}
  .container{padding:0 18px;}
}

/* ============ Intro / two-column blocks ============ */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
@media(max-width:800px){.two-col{grid-template-columns:1fr;}}
.two-col img{border-radius:var(--radius);box-shadow:var(--shadow);}

/* ============ Cards / grid ============ */
.grid{display:grid;gap:28px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media(max-width:860px){.grid-3{grid-template-columns:repeat(2,1fr);} }
@media(max-width:600px){.grid-3,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--white);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .2s ease;
}
.card:hover{transform:translateY(-4px);}
.card .card-img{aspect-ratio:4/3;overflow:hidden;background:#ddd;}
.card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-img img{transform:scale(1.06);}
.card-body{padding:18px 20px 22px;}
.card-body h3{font-size:1.15rem;margin-bottom:.3em;}
.card-tags{color:var(--accent);font-size:.85rem;font-weight:700;margin-bottom:.4em;}
.card-body p{color:var(--grey-text);font-size:.92rem;}
.card-link{display:inline-block;margin-top:6px;font-weight:700;color:var(--accent);}

/* ============ Facts grid (proyecto detail) ============ */
.facts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px 32px;}
@media(max-width:860px){.facts-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.facts-grid{grid-template-columns:1fr;}}
.fact-item-header{display:flex;align-items:center;gap:14px;margin-bottom:10px;}
.fact-icon{
  width:46px;height:46px;flex-shrink:0;border-radius:50%;border:1.5px solid var(--dark);
  display:flex;align-items:center;justify-content:center;color:var(--dark);
}
.fact-icon svg{width:22px;height:22px;}
.fact-item h3{margin:0;font-size:1rem;}
.fact-item ul{list-style:disc;margin:0;padding-left:22px;color:var(--grey-text);font-size:.92rem;}
.fact-item ul li{margin-bottom:2px;}
.fact-item p{margin:0;color:var(--grey-text);font-size:.92rem;}

/* ============ Work list (proyecto detail) ============ */
.work-list{list-style:none;margin:24px 0 0;padding:0;}
.work-list li{
  position:relative;padding:10px 0 10px 30px;border-bottom:1px solid #eee;
  color:var(--grey-text);
}
.work-list li:last-child{border-bottom:none;}
.work-list li::before{
  content:"";position:absolute;left:0;top:18px;width:10px;height:10px;
  border-radius:2px;background:var(--accent);
}

/* ============ Simple photo gallery ============ */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
@media(max-width:900px){.gallery{grid-template-columns:repeat(3,1fr);}}
@media(max-width:600px){.gallery{grid-template-columns:repeat(2,1fr);}}
.gallery figure{margin:0;aspect-ratio:1/1;overflow:hidden;border-radius:var(--radius);cursor:zoom-in;}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.gallery figure:hover img{transform:scale(1.08);}
.gallery-group{
  background:var(--white);border-radius:12px;box-shadow:var(--shadow);
  padding:26px 26px 30px;margin-bottom:28px;
}
.gallery-group h3{font-size:1.25rem;margin-bottom:4px;}
.gallery-group .gg-sub{color:var(--grey-text);font-size:.9rem;margin-bottom:18px;}
@media(max-width:600px){.gallery-group{padding:18px 16px 22px;border-radius:10px;}}

/* Lightbox */
.lightbox{
  position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:2000;
  display:none;align-items:center;justify-content:center;padding:30px;
}
.lightbox.open{display:flex;}
.lightbox img{max-width:100%;max-height:90vh;border-radius:4px;}
.lightbox-close{
  position:absolute;top:20px;right:26px;color:#fff;font-size:2rem;
  background:none;border:none;cursor:pointer;line-height:1;
}

/* ============ Client logos ============ */
.clients{display:grid;grid-template-columns:repeat(6,1fr);gap:24px;align-items:center;}
@media(max-width:800px){.clients{grid-template-columns:repeat(4,1fr);}}
@media(max-width:520px){.clients{grid-template-columns:repeat(3,1fr);}}
.clients img{max-height:56px;width:auto;margin:0 auto;filter:grayscale(100%);opacity:.75;transition:.2s;}
.clients img:hover{filter:none;opacity:1;}

/* ============ Contact ============ */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr;}}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-weight:700;margin-bottom:6px;font-size:.9rem;}
.form-field input,.form-field textarea{
  width:100%;padding:12px 14px;border:1px solid #ccc;border-radius:var(--radius);
  font-family:inherit;font-size:1rem;background:#fff;
}
.form-field textarea{min-height:140px;resize:vertical;}
.form-field input:focus,.form-field textarea:focus{outline:2px solid var(--accent);border-color:var(--accent);}
.form-msg{padding:12px 16px;border-radius:var(--radius);margin-bottom:18px;font-weight:600;display:none;}
.form-msg.show{display:block;}
.form-msg.ok{background:#e5f6e9;color:#1c7a35;}
.form-msg.err{background:#fdeaea;color:#b32424;}
.hp-field{position:absolute;left:-9999px;top:-9999px;}

.info-card{background:var(--dark);color:#fff;border-radius:var(--radius);padding:32px;}
.info-card h3{color:var(--accent);font-size:1.1rem;text-transform:uppercase;letter-spacing:.05em;}
.info-line{display:flex;gap:12px;margin-bottom:16px;align-items:flex-start;}
.info-line strong{display:block;}
.info-line a{color:#fff;}
.info-line a:hover{color:var(--accent);}
.hours-row{display:flex;justify-content:space-between;padding:4px 0;border-bottom:1px dotted rgba(255,255,255,.15);font-size:.92rem;}

/* ============ Intro blocks (quienes somos) ============ */
.intro-blocks{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-bottom:56px;}
@media(max-width:700px){.intro-blocks{grid-template-columns:1fr;}}
.intro-block{background:var(--dark);color:#fff;border-radius:12px;padding:36px 34px;}
.intro-block .eyebrow{color:var(--accent);opacity:.9;}
.intro-block h3{color:#fff;font-size:1.5rem;}
.intro-block p{color:#dcdcdc;margin-bottom:0;}

/* ============ Icon feature grid ============ */
.feature-icons{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center;}
@media(max-width:860px){.feature-icons{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.feature-icons{grid-template-columns:1fr;}}
.feature-item .feature-icon{
  width:64px;height:64px;margin:0 auto 16px;border-radius:50%;
  background:var(--grey);display:flex;align-items:center;justify-content:center;color:var(--dark);
}
.feature-item .feature-icon svg{width:28px;height:28px;}
.feature-item h3{font-size:1.05rem;margin-bottom:.4em;}
.feature-item p{color:var(--grey-text);font-size:.9rem;margin-bottom:0;}

/* ============ CTA band ============ */
.cta-band{background:var(--dark);color:#fff;text-align:center;padding:56px 24px;}
.cta-band h2{color:#fff;}
.cta-band p{color:#ccc;max-width:560px;margin:0 auto 24px;}

/* ============ Footer ============ */
.site-footer{background:var(--dark-soft);color:#ccc;padding:48px 0 20px;font-size:.9rem;}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:32px;margin-bottom:32px;}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h4{color:#fff;font-size:1rem;margin-bottom:12px;}
.footer-grid a{color:#ccc;}
.footer-grid a:hover{color:var(--accent);}
.footer-hours div{display:flex;justify-content:space-between;padding:3px 0;}
.social-row{display:flex;gap:12px;margin-top:10px;}
.social-row a{
  width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;font-size:.95rem;
}
.social-row a:hover{background:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-top:18px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:.82rem;color:#999;
}
.footer-bottom a{color:#999;}
.footer-bottom a:hover{color:var(--accent);}

/* ============ Whatsapp floating button ============ */
.wa-float{
  position:fixed;right:20px;bottom:20px;z-index:900;
  background:#25D366;color:#fff;width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:1.6rem;
  box-shadow:0 4px 14px rgba(0,0,0,.3);
}

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