/* =========================================================
   CONSTRUCTORA MAKRA — Hoja de estilos principal
   Paleta: charcoal cálido + naranja de obra + acentos del isotipo
   ========================================================= */

:root{
  --ink-900:#241C18;
  --ink-800:#3A2E28;
  --ink-700:#4E4038;
  --ink-600:#6B5C53;
  --orange:#A9792C;
  --orange-dark:#8A6423;
  --orange-light:#D8B978;
  --orange-tint:#F7EEDC;
  --gray-100:#FBF8F4;
  --gray-200:#EFE8DF;
  --gray-400:#CBBFB3;
  --white:#FFFFFF;

  --gold:#8A6423;
  --gold-light:#CBA66A;
  --orange-bright:#E3C077;

  --font-head:'Archivo', Arial, sans-serif;
  --font-body:'Work Sans', Arial, sans-serif;

  --radius:14px;
  --radius-sm:8px;
  --shadow-sm:0 2px 10px rgba(36,28,24,0.10);
  --shadow-md:0 10px 30px rgba(36,28,24,0.16);
  --container:1180px;
  --transition:.25s ease;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
[hidden]{ display:none !important; }

a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px var(--ink-900), 0 0 0 6px var(--orange-light);
}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink-800);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--font-head); font-weight:800; margin:0 0 .5em; line-height:1.15; color:var(--ink-900); letter-spacing:-.01em; }
p{ margin:0 0 1em; color:var(--ink-700); }

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

.section{ padding:88px 0; }
.section-tight{ padding:64px 0; }
.section-alt{ background:var(--gray-100); }
.section-head{ max-width:640px; margin:0 0 48px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.eyebrow{
  display:inline-block;
  font-family:var(--font-head);
  font-weight:700;
  font-size:.8rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--orange-dark);
  background:var(--orange-tint);
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:14px;
}

/* ===== Botones ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:999px;
  font-weight:700;
  font-size:.95rem;
  font-family:var(--font-head);
  border:2px solid transparent;
  cursor:pointer;
  transition:transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-2px); }
.btn-primary{
  background:linear-gradient(135deg, var(--orange-bright) 0%, var(--orange) 42%, var(--orange-dark) 100%);
  color:var(--white); box-shadow:var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,.35);
  text-shadow:0 1px 1px rgba(36,28,24,.25);
}
.btn-primary:hover{
  background:linear-gradient(135deg, var(--orange-bright) 0%, var(--orange-dark) 65%, var(--orange-dark) 100%);
  box-shadow:var(--shadow-md), inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-outline{ background:transparent; border-color:var(--white); color:var(--white); }
.btn-outline:hover{ background:rgba(255,255,255,.12); }
.btn-outline-dark{ background:transparent; border-color:var(--ink-900); color:var(--ink-900); }
.btn-outline-dark:hover{ background:var(--ink-900); color:var(--white); }
.btn-sm{ padding:10px 20px; font-size:.85rem; }
.btn-block{ width:100%; }

/* ===== Botón flotante WhatsApp / volver arriba ===== */
.whatsapp-float{
  position:fixed; right:20px; bottom:20px; z-index:60;
  width:56px; height:56px; border-radius:50%;
  background:#25D366; color:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow:var(--shadow-md);
  transition:transform var(--transition);
}
.whatsapp-float:hover{ transform:scale(1.07); }

.back-to-top{
  position:fixed; right:20px; bottom:86px; z-index:59;
  width:44px; height:44px; border-radius:50%;
  background:var(--ink-900); color:var(--white);
  border:none; font-size:1.1rem; cursor:pointer;
  opacity:0; visibility:hidden; transform:translateY(8px);
  transition:opacity var(--transition), transform var(--transition), visibility var(--transition);
  box-shadow:var(--shadow-sm);
}
.back-to-top.visible{ opacity:1; visibility:visible; transform:translateY(0); }

/* ===== Header ===== */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--gray-200);
}
.header-inner{
  display:flex; align-items:center; gap:24px;
  padding:14px 24px;
}
.brand{ display:flex; align-items:center; gap:10px; margin-right:auto; }
.brand-icon{ height:44px; width:auto; display:block; filter:drop-shadow(0 2px 3px rgba(36,28,24,.25)); }
.brand-text{ display:flex; flex-direction:column; line-height:1.05; }
.brand-sub{ font-family:var(--font-head); font-weight:600; font-size:.66rem; letter-spacing:.16em; color:var(--ink-700); text-transform:uppercase; }
.brand-mark{ font-family:var(--font-head); font-weight:800; font-size:1.4rem; letter-spacing:.01em; color:var(--gold); }

.main-nav{ display:flex; align-items:center; gap:28px; }
.nav-link{ font-weight:600; font-size:.94rem; color:var(--ink-800); position:relative; padding:6px 0; }
.nav-link::after{
  content:''; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--orange); transform:scaleX(0); transform-origin:left;
  transition:transform var(--transition);
}
.nav-link:hover::after, .nav-link.active::after{ transform:scaleX(1); }
.nav-link.active{ color:var(--orange-dark); }

.header-actions{ display:flex; align-items:center; }
.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:38px; height:38px; background:none; border:none; cursor:pointer; padding:0;
}
.nav-toggle span{ display:block; height:2px; background:var(--ink-900); border-radius:2px; transition:transform var(--transition), opacity var(--transition); }
.nav-toggle.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

@media (max-width:880px){
  .main-nav{
    position:absolute; top:100%; left:0; right:0;
    background:var(--white); flex-direction:column; align-items:stretch;
    padding:8px 24px 20px; gap:4px; border-bottom:1px solid var(--gray-200);
    display:none;
  }
  .main-nav.open{ display:flex; }
  .nav-link{ padding:12px 0; border-bottom:1px solid var(--gray-200); }
  .nav-link::after{ display:none; }
  .header-actions{ display:none; }
  .nav-toggle{ display:flex; }
}

/* ===== Hero ===== */
.hero{
  position:relative; color:var(--white);
  display:flex; align-items:center;
  min-height:min(88vh, 720px);
  overflow:hidden;
}
.hero-bg{
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover; object-position:center 55%;
  background:var(--ink-900);
}
.hero-overlay{
  position:absolute; inset:0;
  background:linear-gradient(115deg, rgba(36,28,24,.92) 0%, rgba(36,28,24,.78) 38%, rgba(36,28,24,.42) 75%, rgba(36,28,24,.30) 100%);
}
.hero-content{ position:relative; z-index:2; padding:120px 0 80px; max-width:680px; }
.hero .eyebrow{ background:rgba(227,192,119,.16); color:var(--orange-bright); }
.hero h1{ color:var(--white); font-size:clamp(2.1rem, 4.4vw, 3.4rem); }
.hero-sub{ color:rgba(255,255,255,.86); font-size:1.08rem; max-width:560px; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:8px; }

/* ===== Barra de confianza / stats ===== */
.stats-bar{ background:var(--ink-900); color:var(--white); padding:40px 0; }
.stats-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:24px; text-align:center;
}
.stat-number{ font-family:var(--font-head); font-weight:800; font-size:clamp(1.8rem,3vw,2.4rem); color:var(--orange-bright); }
.stat-label{ font-size:.85rem; color:rgba(255,255,255,.75); margin:0; }
@media (max-width:760px){ .stats-grid{ grid-template-columns:repeat(1,1fr); row-gap:24px; } }

/* ===== Servicios ===== */
.services-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:20px;
}
@media (max-width:980px){ .services-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .services-grid{ grid-template-columns:1fr; } }

.service-card{
  background:var(--white); border:1px solid var(--gray-200); border-radius:var(--radius);
  padding:26px 22px; box-shadow:var(--shadow-sm);
  transition:transform var(--transition), box-shadow var(--transition);
}
.service-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-md); }
.service-icon{
  width:50px; height:50px; border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px;
  background:linear-gradient(150deg, var(--ink-800), var(--ink-900));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10), 0 3px 8px rgba(36,28,24,.28);
  color:var(--gold-light);
  transition:transform var(--transition), box-shadow var(--transition);
}
.service-icon svg{ width:24px; height:24px; }
.service-card:hover .service-icon{ transform:translateY(-2px) scale(1.04); box-shadow:inset 0 1px 0 rgba(255,255,255,.14), 0 6px 14px rgba(36,28,24,.35); }
.service-card h3{ font-size:1.05rem; margin-bottom:8px; }
.service-card p{ font-size:.92rem; margin:0; color:var(--ink-600); }

/* ===== Proyectos destacados ===== */
.projects-grid{
  display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:220px; gap:16px;
}
.project-card{
  display:block; position:relative; border-radius:var(--radius); overflow:hidden;
  grid-column:span 2; grid-row:span 1;
  box-shadow:var(--shadow-sm);
}
.project-caption .more{
  display:inline-block; margin-top:6px; font-size:.78rem; font-weight:700;
  color:var(--orange-bright); letter-spacing:.02em;
}
.project-card.tall{ grid-row:span 2; }
.project-card.wide{ grid-column:span 4; }
.project-card.wide-tall{ grid-column:span 4; grid-row:span 2; }
.project-card img{ width:100%; height:100%; object-fit:cover; transition:transform .4s ease; }
.project-card:hover img{ transform:scale(1.06); }
.project-caption{
  position:absolute; left:0; right:0; bottom:0; padding:18px 18px 16px;
  background:linear-gradient(0deg, rgba(36,28,24,.92) 0%, rgba(36,28,24,0) 100%);
  color:var(--white);
}
.project-caption .tag{
  font-family:var(--font-head); font-weight:700; font-size:.68rem; letter-spacing:.08em; text-transform:uppercase;
  color:var(--orange-bright); display:block; margin-bottom:4px;
}
.project-caption strong{ display:block; font-size:1rem; font-family:var(--font-head); }
.project-caption span.meta{ font-size:.8rem; color:rgba(255,255,255,.8); }

@media (max-width:900px){
  .projects-grid{ grid-template-columns:repeat(2,1fr); grid-auto-rows:200px; }
  .project-card{ grid-column:span 2 !important; grid-row:span 1 !important; }
}

/* ===== Antes / Después ===== */
.before-after{
  display:grid; grid-template-columns:1fr 1fr; gap:16px; max-width:760px; margin:0 auto;
}
.before-after figure{ margin:0; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-sm); position:relative; }
.before-after img{ width:100%; height:260px; object-fit:cover; }
.before-after figcaption{
  position:absolute; top:12px; left:12px;
  background:var(--ink-900); color:var(--white);
  font-family:var(--font-head); font-weight:700; font-size:.72rem; letter-spacing:.06em; text-transform:uppercase;
  padding:5px 12px; border-radius:999px;
}
@media (max-width:560px){ .before-after{ grid-template-columns:1fr; } }

/* ===== Galería energía solar ===== */
.solar-feature{
  position:relative; border-radius:var(--radius); overflow:hidden;
  box-shadow:var(--shadow-md); margin-bottom:18px;
}
.solar-feature img{ width:100%; height:min(480px, 56vw); object-fit:cover; display:block; }
.solar-feature-caption{
  position:absolute; left:0; right:0; bottom:0;
  padding:34px 26px 18px;
  background:linear-gradient(to top, rgba(36,28,24,.88), rgba(36,28,24,.35) 60%, transparent);
  color:var(--white); font-size:.95rem; font-weight:600;
}
.solar-feature-caption span{
  display:block; font-family:var(--font-head); font-weight:800; text-transform:uppercase;
  letter-spacing:.06em; font-size:.72rem; color:var(--orange-bright); margin-bottom:4px;
}

.solar-gallery{
  display:grid; grid-template-columns:repeat(3, 1fr); grid-auto-rows:190px; grid-auto-flow:row dense; gap:14px;
}
.solar-gallery figure{
  margin:0; border-radius:var(--radius-sm); overflow:hidden; box-shadow:var(--shadow-sm);
  background:var(--gray-200); display:flex; flex-direction:column;
}
.solar-gallery img{ width:100%; height:100%; object-fit:cover; display:block; flex:1; min-height:0; }
.solar-gallery figcaption{
  padding:9px 12px; font-size:.78rem; line-height:1.3; color:var(--ink-600); background:var(--white);
}
.solar-gallery figure.tall{ grid-row:span 2; }
.solar-gallery figure.wide{ grid-column:span 2; }
@media (max-width:800px){
  .solar-gallery{ grid-template-columns:repeat(2, 1fr); }
}
@media (max-width:560px){
  .solar-gallery{ grid-template-columns:1fr; grid-auto-rows:220px; }
  .solar-gallery figure.tall{ grid-row:span 1; }
  .solar-gallery figure.wide{ grid-column:span 1; }
  .solar-feature img{ height:280px; }
}

/* ===== Nosotros ===== */
.about-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:56px; align-items:center; }
@media (max-width:880px){ .about-grid{ grid-template-columns:1fr; } }
.about-figure{ border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-md); }
.about-figure img{ width:100%; height:100%; object-fit:cover; }
.about-list{ margin-top:20px; display:flex; flex-direction:column; gap:14px; }
.about-list li{ display:flex; gap:12px; align-items:flex-start; color:var(--ink-800); font-size:.96rem; }
.about-list .dot{
  flex:none; width:22px; height:22px; border-radius:50%; background:var(--orange-tint); color:var(--orange-dark);
  display:flex; align-items:center; justify-content:center; font-size:.75rem; font-weight:800; margin-top:2px;
}

/* ===== Clientes ===== */
.clients-grid{ display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:18px; }
.client-tile{
  background:var(--white);
  border:1px solid var(--gray-200);
  border-radius:var(--radius-sm);
  box-shadow:var(--shadow-sm);
  padding:14px 22px;
  display:flex; align-items:center; justify-content:center;
  height:104px;
  transition:transform var(--transition), box-shadow var(--transition);
}
.client-tile:hover{ transform:translateY(-3px); box-shadow:var(--shadow-md); }
.client-tile img{ max-height:70px; max-width:260px; width:auto; height:auto; object-fit:contain; }

/* ===== Contacto ===== */
.contact-grid{ display:grid; grid-template-columns:.85fr 1.15fr; gap:48px; align-items:start; }
@media (max-width:900px){ .contact-grid{ grid-template-columns:1fr; } }

.contact-card{
  display:flex; align-items:center; gap:14px;
  background:var(--white); border:1px solid var(--gray-200); border-radius:var(--radius-sm);
  padding:16px 18px; margin-bottom:12px; box-shadow:var(--shadow-sm);
}
.contact-card .ico{
  flex:none; width:40px; height:40px; border-radius:10px; background:var(--orange-tint);
  display:flex; align-items:center; justify-content:center; font-size:1.15rem;
}
.contact-card strong{ display:block; font-size:.85rem; color:var(--ink-600); font-weight:600; }
.contact-card span, .contact-card a{ font-weight:700; color:var(--ink-900); }

.contact-form{
  background:var(--white); border:1px solid var(--gray-200); border-radius:var(--radius);
  padding:32px; box-shadow:var(--shadow-sm);
  display:grid; gap:18px;
}
.contact-form .row-2{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:560px){ .contact-form .row-2{ grid-template-columns:1fr; } }
.contact-form label{ display:flex; flex-direction:column; gap:6px; font-size:.88rem; font-weight:600; color:var(--ink-800); }
.contact-form input, .contact-form select, .contact-form textarea{
  font-family:var(--font-body); font-size:.96rem; padding:12px 14px;
  border:1.5px solid var(--gray-200); border-radius:var(--radius-sm); background:var(--gray-100);
  color:var(--ink-900); transition:border-color var(--transition), background var(--transition);
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus{
  outline:none; border-color:var(--orange); background:var(--white);
}
.contact-form textarea{ resize:vertical; min-height:110px; font-family:var(--font-body); }
.quote-status{ font-size:.9rem; font-weight:600; min-height:1.2em; }
.quote-status.is-error{ color:#B3261E; }
.quote-status.is-success{ color:#1E7B3C; }

/* ===== Footer ===== */
.site-footer{ background:var(--ink-900); color:rgba(255,255,255,.78); padding:56px 0 24px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; margin-bottom:40px; }
@media (max-width:760px){ .footer-grid{ grid-template-columns:1fr; gap:28px; } }
.footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:18px; }
.footer-logo{ height:96px; width:auto; display:block; filter:drop-shadow(0 4px 10px rgba(0,0,0,.45)); }
@media (max-width:520px){ .footer-logo{ height:76px; } }
.site-footer h4{ color:var(--white); font-size:.95rem; margin-bottom:14px; }
.footer-links{ display:flex; flex-direction:column; gap:10px; }
.footer-links a{ font-size:.92rem; color:rgba(255,255,255,.78); }
.footer-links a:hover{ color:var(--orange-bright); }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12); padding-top:20px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  font-size:.82rem; color:rgba(255,255,255,.55);
}

/* ===== Utilidades de animación ===== */
[data-reveal]{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
[data-reveal].in-view{ opacity:1; transform:translateY(0); }
@media (prefers-reduced-motion:reduce){
  [data-reveal]{ opacity:1; transform:none; transition:none; }
}