/* ENSAMBLE Grupo Empresarial — hoja de estilos
   Concepto: el isotipo de cuatro piezas que encajan guía la composición:
   mosaicos 2x2, bordes redondeados de 18px y un solo acento verde. */
:root {
  --carbon: #171415;
  --carbon-2: #201D1E;
  --carbon-3: #2B2829;
  --verde: #7FB43C;
  --verde-osc: #4E7C1F;
  --plata: #C9CDD2;
  --blanco: #FFFFFF;
  --texto: #F1F2EE;
  --texto-2: #B9BDB6;
  --linea: #3A3637;
  --radio: 18px;
  --font: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body { margin: 0; background: var(--carbon); color: var(--texto); font-family: var(--font); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; }
.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding-inline: 20px; }
h1, h2, h3 { line-height: 1.12; margin: 0; text-wrap: balance; font-weight: 700; }
h2 { font-size: clamp(28px, 4.2vw, 44px); letter-spacing: -0.01em; }
h3 { font-size: 20px; }
p { margin: 0; }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--verde); }
.lead { color: var(--texto-2); font-size: 18px; max-width: 60ch; }
section { padding-block: clamp(64px, 9vw, 112px); }
.sec-head { display: grid; gap: 14px; margin-bottom: 44px; max-width: 760px; }

/* Botones */
.btn { display: inline-flex; align-items: center; gap: 10px; font: 600 15px var(--font); text-decoration: none; padding: 14px 24px; border-radius: 999px; border: 0; cursor: pointer; transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--verde); outline-offset: 3px; }
.btn-verde { background: var(--verde); color: var(--carbon); }
.btn-verde:hover { background: #8cc446; }
.btn-linea { background: transparent; color: var(--texto); box-shadow: inset 0 0 0 1.5px var(--linea); }
.btn-linea:hover { box-shadow: inset 0 0 0 1.5px var(--plata); }
.wa-ico { width: 20px; height: 20px; flex: none; }

/* Encabezado */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: rgba(23, 20, 21, 0.88); backdrop-filter: blur(10px); border-bottom: 1px solid var(--linea); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 72px; }
.marca { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.marca img { width: 38px; height: 38px; }
.marca b { display: block; font-size: 19px; letter-spacing: 0.06em; line-height: 1; }
.marca small { display: block; font-size: 9.5px; letter-spacing: 0.28em; color: var(--texto-2); margin-top: 4px; }
.nav { display: flex; gap: clamp(14px, 1.9vw, 26px); font-size: 14.5px; }
.nav a { text-decoration: none; color: var(--texto-2); white-space: nowrap; }
.nav a:hover { color: var(--texto); }
.top .btn { padding: 10px 18px; font-size: 14px; }
@media (max-width: 1080px) { .nav { display: none; } }
@media (max-width: 420px) { .top .btn span { display: none; } }

/* Hero */
.hero { padding-block: clamp(48px, 7vw, 96px); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); align-items: center; }
.hero-txt { display: grid; gap: 22px; min-width: 0; }
.hero h1 { font-size: clamp(48px, 8.4vw, 104px); letter-spacing: -0.03em; line-height: 0.98; }
.hero h1 em { font-style: normal; color: var(--verde); }
.hero .lead { font-size: clamp(17px, 1.6vw, 20px); }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.lineas-mini { display: flex; flex-wrap: wrap; gap: 8px 10px; margin-top: 8px; padding: 0; list-style: none; }
.lineas-mini li { font-size: 13px; color: var(--texto-2); padding: 6px 14px; border-radius: 999px; border: 1px solid var(--linea); }
.mosaico { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; aspect-ratio: 1 / 1; max-width: 100%; }
.pieza { border-radius: var(--radio); overflow: hidden; position: relative; min-height: 0; }
.pieza img { width: 100%; height: 100%; object-fit: cover; }
.pieza.verde { background: var(--verde); color: var(--carbon); display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(14px, 2.4vw, 26px); }
.pieza.osc { background: var(--verde-osc); }
.pieza.osc img { mix-blend-mode: luminosity; opacity: 0.85; }
.pieza .k { font-size: clamp(30px, 4.6vw, 56px); font-weight: 700; line-height: 1; }
.pieza .s { font-size: clamp(12px, 1.2vw, 14px); font-weight: 600; margin-top: 6px; }
.pieza .tag { position: absolute; left: 12px; bottom: 12px; font-size: 12px; font-weight: 600; background: rgba(23,20,21,.82); padding: 5px 12px; border-radius: 999px; }
@media (max-width: 820px) { .hero .wrap { grid-template-columns: 1fr; } .mosaico { max-width: 520px; } }

/* Líneas de negocio */
.lineas { background: var(--carbon-2); }
.grid-lineas { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.linea { grid-column: span 2; background: var(--carbon); border: 1px solid var(--linea); border-radius: var(--radio); padding: 28px; display: grid; gap: 14px; align-content: start; }
.linea:nth-child(4), .linea:nth-child(5) { grid-column: span 3; }
.linea.destacada { background: var(--verde); color: var(--carbon); border-color: var(--verde); }
.linea.destacada p, .linea.destacada li { color: #1f2a12; }
.linea .ico { width: 44px; height: 44px; }
.linea p { color: var(--texto-2); }
.linea ul { margin: 0; padding-left: 18px; color: var(--texto-2); font-size: 14.5px; display: grid; gap: 4px; }
.linea .ir { font-weight: 600; font-size: 14.5px; text-decoration: none; margin-top: 4px; }
.linea .ir:hover { text-decoration: underline; }
@media (max-width: 900px) { .grid-lineas { grid-template-columns: 1fr 1fr; } .linea, .linea:nth-child(4), .linea:nth-child(5) { grid-column: span 1; } .linea.destacada { grid-column: span 2; } }
@media (max-width: 560px) { .grid-lineas { grid-template-columns: 1fr; } .linea.destacada { grid-column: span 1; } }

/* Mantenimiento */
.grid-serv { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.serv { margin: 0; position: relative; border-radius: var(--radio); overflow: hidden; aspect-ratio: 4 / 5; background: var(--carbon-3); }
.serv img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.serv:hover img { transform: scale(1.04); }
.serv figcaption { position: absolute; inset: auto 0 0 0; padding: 60px 20px 20px; background: linear-gradient(to top, rgba(23,20,21,.96) 30%, rgba(23,20,21,0)); display: grid; gap: 4px; }
.serv figcaption b { font-size: 19px; }
.serv figcaption span { color: var(--texto-2); font-size: 14px; }
.serv-extra { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; padding: 0; list-style: none; }
.serv-extra li { font-size: 14px; padding: 8px 16px; border-radius: 999px; background: var(--carbon-3); }
@media (max-width: 900px) { .grid-serv { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .grid-serv { grid-template-columns: 1fr; } .serv { aspect-ratio: 4 / 4.4; } }

/* Galerías (materiales, carpintería, construcción): fotos del mismo tamaño */
#materiales, #construccion, #estudios { padding-top: 0; }
.carpinteria { background: var(--carbon-2); }
.grid-mat { --ar: 1 / 1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.carpinteria .grid-mat { --ar: 4 / 5; }
#construccion .grid-mat, #estudios .grid-mat { grid-template-columns: repeat(3, minmax(0, 1fr)); }
#estudios .grid-mat { --ar: 4 / 3; }
.mat { margin: 0; position: relative; border-radius: var(--radio); overflow: hidden; background: var(--carbon-3); aspect-ratio: var(--ar); }
.mat img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.mat:hover img { transform: scale(1.04); }
.mat figcaption { position: absolute; left: 12px; bottom: 12px; font-size: 12.5px; font-weight: 600; background: rgba(23,20,21,.85); padding: 5px 12px; border-radius: 999px; }
.grid-mat + .ctas { margin-top: 28px; }
@media (max-width: 900px) { .grid-mat, #construccion .grid-mat, #estudios .grid-mat { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .grid-mat { gap: 10px; } .mat figcaption { font-size: 10.5px; line-height: 1.25; padding: 4px 9px; border-radius: 10px; left: 8px; bottom: 8px; max-width: calc(100% - 16px); } }

/* Antes y después */
.ad { background: var(--carbon-2); }
.grid-ad { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.caso { display: grid; gap: 14px; }
.par { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.par figure { margin: 0; position: relative; border-radius: 14px; overflow: hidden; aspect-ratio: 1 / 1; }
.par img { width: 100%; height: 100%; object-fit: cover; }
.par figcaption { position: absolute; top: 10px; left: 10px; font-size: 12px; font-weight: 700; letter-spacing: .08em; padding: 5px 12px; border-radius: 999px; background: var(--carbon); }
.par figure:last-child figcaption { background: var(--verde); color: var(--carbon); }
.caso h3 { font-size: 18px; }
.caso p { color: var(--texto-2); font-size: 15px; }
@media (max-width: 820px) { .grid-ad { grid-template-columns: 1fr; } }

/* Cómo trabajamos */
.pasos { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; counter-reset: paso; list-style: none; padding: 0; margin: 0; }
.paso { border-top: 3px solid var(--verde-osc); padding-top: 22px; display: grid; gap: 10px; }
.paso::before { counter-increment: paso; content: counter(paso); font-size: 44px; font-weight: 700; color: var(--verde); line-height: 1; }
.paso p { color: var(--texto-2); }
@media (max-width: 720px) { .pasos { grid-template-columns: 1fr; } }

/* Por qué */
.porque { background: var(--carbon-2); }
.porque .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 48px; align-items: start; }
.lista-porque { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 24px; }
.lista-porque div { display: grid; gap: 6px; }
.lista-porque b { font-size: 17px; }
.lista-porque b::before { content: ""; display: inline-block; width: 12px; height: 12px; border-radius: 3px; background: var(--verde); margin-right: 10px; }
.lista-porque p { color: var(--texto-2); font-size: 15px; }
.cobertura { margin-top: 26px; display: grid; gap: 10px; }
.cobertura ul { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; list-style: none; }
.cobertura li { font-size: 14px; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--linea); }
@media (max-width: 820px) { .porque .wrap { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .lista-porque { grid-template-columns: 1fr; } }

/* Contacto */
.contacto .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 48px; align-items: start; }
.datos { display: grid; gap: 22px; }
.dato { display: grid; gap: 2px; }
.dato span { font-size: 12.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--texto-2); }
.dato b { font-size: 19px; word-break: break-word; }
form { background: var(--carbon-2); border: 1px solid var(--linea); border-radius: var(--radio); padding: clamp(20px, 3vw, 32px); display: grid; gap: 16px; }
.campo { display: grid; gap: 6px; }
label { font-size: 14px; font-weight: 500; }
input, select, textarea { font: 15px var(--font); color: var(--texto); background: var(--carbon); border: 1px solid var(--linea); border-radius: 12px; padding: 12px 14px; width: 100%; }
textarea { min-height: 110px; resize: vertical; }
.fila { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.nota { font-size: 13px; color: var(--texto-2); }
@media (max-width: 820px) { .contacto .wrap { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .fila { grid-template-columns: 1fr; } }

/* Pie */
footer { border-top: 1px solid var(--linea); padding-block: 36px; color: var(--texto-2); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 18px; }
footer em { color: var(--verde); font-style: italic; }

/* Botón flotante de WhatsApp */
.wa-flot { position: fixed; right: 18px; bottom: calc(18px + env(safe-area-inset-bottom, 0px)); z-index: 30; width: 60px; height: 60px; border-radius: 50%; background: var(--verde); display: grid; place-items: center; box-shadow: 0 8px 24px rgba(0,0,0,.45); }
.wa-flot svg { width: 30px; height: 30px; }