/* ===========================
   STYLES.CSS - Construteg
   Paleta: Tomate + Blanco
   Incluye: Nav fijo, Hero, Secciones,
   Lightbox (galería), Páginas de Agenda
   =========================== */

/* --------- Variables y base --------- */
:root{
  --tomato:#FF6347;          /* rojo tomate */
  --tomato-strong:#e5533d;   /* borde/hover */
  --bg:#ffffff;
  --ink:#1a1a1a;
  --muted:#666;
  --card:#fff6f3;
  --line:#f2f2f2;
  --steel:#e3e3e3;           /* NUEVO color para estructuras metálicas */
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:Montserrat, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}

/* --------- Utilidades --------- */
.container{width:min(1100px, 92%); margin-inline:auto}
.flex{display:flex; gap:1rem}
.center{align-items:center}
.between{justify-content:space-between}
.grid-2{display:grid; grid-template-columns:1.1fr 0.9fr; gap:2rem}
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:1rem}
.section{padding:4rem 0}
.section--alt{background:#fff0eb}
.section__header{margin-bottom:1.25rem}
.section__header h2{margin:0 0 .5rem}

/* --------- Botones y links --------- */
.btn{
  display:inline-block;
  padding:.9rem 1.1rem;
  border-radius:14px;
  text-decoration:none;
  font-weight:700;
  border:2px solid var(--tomato-strong);
  transition:.2s ease;
}
.btn--solid{
  background:var(--tomato);
  color:#fff;
}
.btn--solid:hover{filter:brightness(.95)}
.btn--ghost{
  background:transparent;
  color:#000;
  border:2px solid var(--tomato-strong);
}
.btn--ghost:hover{background:var(--tomato); color:#fff}
.pill{
  background:var(--tomato);
  color:#fff;
  padding:.2rem .5rem;
  border-radius:999px;
  font-weight:800;
}
.link{color:#000; text-underline-offset:3px}
.link:hover{background:#ffe2dc}

/* --------- Topbar / Navegación --------- */
.topbar{
  position:sticky; top:0; z-index:10;
  background:#fff;
  border-bottom:1px solid var(--line);
  height:70px;
  display:flex; align-items:center;
}
.brand{display:flex; gap:.6rem; align-items:center; text-decoration:none; color:inherit}
.brand__logo-img {
  width: 100px;    /* tamaño del logo */
  height: auto;   /* mantiene proporción */
  border-radius: 6px; /* opcional, redondea esquinas */
}

.brand__name{font-weight:800; letter-spacing:.5px}

.nav{ position:relative; }
.nav__toggle{
  display:none;
  font-size:1.5rem;
  background:transparent; border:0; cursor:pointer;
}
.nav__list{
  display:flex;
  gap:.6rem;
  list-style:none;
  margin:0;
  padding:0;
  align-items:center;
  flex-wrap:nowrap;
}
.nav__list li{ flex:0 0 auto; }
.nav__list a{
  display:block;
  text-decoration:none;
  color:#000;
  padding:.7rem .8rem;
  border-radius:10px;
  white-space:nowrap;
  word-break:keep-all;
}
.nav__list a:hover{background:#ffe2dc}

/* --------- Hero --------- */
.hero{
  position: relative;
  background:
    radial-gradient(80% 80% at 10% 10%, #ffe2dc 0%, transparent 60%),
    radial-gradient(70% 70% at 90% 20%, #ffd3c7 0%, transparent 60%),
    #fff;
  padding:4rem 0 3rem;
}
.hero h1{font-size:clamp(1.8rem, 2.5vw + 1rem, 3rem); line-height:1.15; margin:0 0 .6rem}
.lead{font-size:1.05rem; color:#333}
.hero__cta{display:flex; gap:.7rem; margin:1rem 0 1.2rem}
.badges{display:flex; flex-wrap:wrap; gap:.6rem; padding:0; margin:0; list-style:none}
.badges li{
  background:#ffe2dc; border:1px dashed var(--tomato-strong);
  padding:.35rem .6rem; border-radius:999px; font-size:.9rem;
}

.card{
  background:#fff; border:1px solid var(--line); border-radius:16px; padding:1.1rem;
  box-shadow:0 6px 16px rgba(0,0,0,.05);
}
.card--soft{background:var(--card)}
.checklist{padding-left:1.2rem; margin:0}
.checklist li{margin:.35rem 0}

/* --------- Calculadora --------- */
.calculator .field{display:flex; flex-direction:column; gap:.4rem}
.field input, .field select, .field textarea{
  padding:.7rem .8rem; border-radius:10px; border:1px solid var(--line); background:#fff;
}
.addons{margin:1rem 0; border:1px dashed var(--tomato-strong); padding:.8rem; border-radius:12px}
.addons legend{padding:0 .4rem; font-weight:700}
.check{display:inline-flex; align-items:center; gap:.4rem; margin-right:1rem}
.calculator__actions{display:flex; gap:.6rem; margin:.5rem 0}
.result{margin-top:1rem}
.error{color:#b00020}
.small{font-size:.9rem}
.muted{color:var(--muted)}

/* --------- Portafolio (galería) --------- */
.gallery{
  display:grid; grid-template-columns:repeat(6, 1fr); gap:.6rem;
}
.gallery__item{ overflow:hidden; border-radius:14px; border:1px solid var(--line); }
.gallery__item img{
  display:block; width:100%; height:170px; object-fit:cover; transition:transform .3s ease;
}
.gallery__item:hover img{transform:scale(1.05)}

/* --------- Blog --------- */
.posts{ display:grid; grid-template-columns:repeat(3, 1fr); gap:1rem; }
.post h3{margin:.2rem 0 .5rem}

/* --------- Servicios --------- */
.service h3{margin:.2rem 0 .5rem}

/* --------- Formulario de contacto --------- */
.form .field{display:flex; flex-direction:column; gap:.35rem}
.form button{margin-top:.4rem}

/* --------- Footer --------- */
.footer{ padding:1.2rem 0; background:#fff; border-top:1px solid var(--line); }

/* =========================================
   LIGHTBOX (Portafolio de Obras)
   ========================================= */
.lightbox{
  position:fixed; inset:0;
  background:rgba(0,0,0,.8);
  display:flex; align-items:center; justify-content:center;
  opacity:0; pointer-events:none; transition:.2s ease;
  z-index:1000;
}
.lightbox.open{ opacity:1; pointer-events:auto; }
.lb__img{
  max-width:min(90vw, 1100px);
  max-height:80vh;
  border-radius:12px;
  box-shadow:0 10px 30px rgba(0,0,0,.5);
}
.lb__btn{
  position:absolute;
  top:24px;
  background:rgba(255,255,255,.15);
  color:#fff; border:0; cursor:pointer;
  width:44px; height:44px; border-radius:12px;
  backdrop-filter: blur(6px);
  font-size:22px; line-height:44px;
}
.lb__close{ right:24px; }
.lb__prev{ left:24px; top:50%; transform:translateY(-50%); }
.lb__next{ right:24px; top:50%; transform:translateY(-50%); }

/* =========================================
   PÁGINAS DE AGENDA (consultoría / visita)
   ========================================= */
.agenda-body{ background:#fff; }
.agenda-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:1.2rem;
  padding:2rem 0;
}
.agenda-form h2, .agenda-calendar h2{ margin-top:0 }
.agenda-form .field{ display:flex; flex-direction:column; gap:.35rem; }
.agenda-form input, .agenda-form select{
  padding:.7rem .8rem; border-radius:10px; border:1px solid var(--line); background:#fff;
}
.big-date{
  width:100%;
  height:54px;
  font-size:1rem;
  padding:.5rem .8rem;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
}
.ok-msg{
  margin:.8rem 0 0;
  background:#e8fff0;
  border:1px solid #b6f2c8;
  padding:.6rem .8rem;
  border-radius:10px;
}

/* --------- Responsivo --------- */
@media (max-width: 1200px){
  .nav__toggle{ display:inline-block; }
  .nav__list{
    position:absolute;
    right:1rem;
    top:70px;
    flex-direction:column;
    background:#fff;
    border:1px solid var(--line);
    border-radius:12px;
    padding:.5rem;
    display:none;
    min-width:240px;
    box-shadow:0 10px 20px rgba(0,0,0,.06);
  }
  .nav__list.open{ display:flex; }
}

@media (max-width: 980px){
  .grid-2{grid-template-columns:1fr; gap:1.5rem}
  .grid-3{grid-template-columns:1fr; gap:1rem}
  .gallery{grid-template-columns:repeat(3, 1fr)}
  .posts{grid-template-columns:1fr}
  .hero__text{text-align:left}
  .agenda-grid{ grid-template-columns:1fr; }
}

/* =========================================
   FONDO DE ESTRUCTURAS METÁLICAS EN HERO
   ========================================= */
.hero::before{
  content:"";
  position:absolute; inset:0;
  z-index:0;
  opacity:.22;
  background-attachment: fixed;
  background-repeat: repeat;
  background-size: 360px 216px;
  background-image:
    url("data:image/svg+xml;utf8,\
<svg xmlns='http://www.w3.org/2000/svg' width='300' height='180' viewBox='0 0 300 180'>\
<rect fill='none' width='300' height='180'/>\
<g stroke='%23e3e3e3' stroke-width='1.2' fill='none' stroke-linecap='round'>\
<path d='M0 180 L60 0 L120 180 L180 0 L240 180 L300 0'/>\
<path d='M0 0 L60 180 L120 0 L180 180 L240 0 L300 180'/>\
<path d='M0 90H300'/>\
<path d='M0 0H300 M0 180H300'/>\
</g></svg>");
  filter: contrast(95%) saturate(90%);
}
.hero > *{ position: relative; z-index:1; }