/* =========================================================
   ECOTERRA GROUP — Hoja de estilos
   Paleta y tipografía tomadas del mockup ecoterragroup_webdesign.pdf
   ========================================================= */

:root {
  /* Color */
  --negro:        #121212;
  --negro-2:      #1a1a1a;
  --negro-3:      #242424;
  --dorado:       #a38f5d;
  --dorado-claro: #c7b183;
  --dorado-tenue: rgba(163, 143, 93, .12);
  --blanco:       #ffffff;
  --hueso:        #f6f5f3;
  --linea:        #e4e2dd;
  --linea-oscura: rgba(255, 255, 255, .12);
  --texto:        #232323;
  --texto-suave:  #6f6c66;
  --texto-claro:  rgba(255, 255, 255, .72);

  /* Tipografía */
  --titulo: "Poppins", "Helvetica Neue", Arial, sans-serif;
  --cuerpo: "Inter", "Helvetica Neue", Arial, sans-serif;

  /* Medidas */
  --ancho: 1240px;
  --gutter: 24px;
  --radio: 4px;
  --header-h: 84px;

  /* Movimiento */
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--cuerpo);
  font-size: 16px;
  line-height: 1.7;
  color: var(--texto);
  background: var(--blanco);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4 { font-family: var(--titulo); font-weight: 700; line-height: 1.15; margin: 0; letter-spacing: -.02em; }
p { margin: 0 0 1.1em; }
ul { margin: 0; padding: 0; list-style: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- Utilidades ---------- */
.contenedor { width: 100%; max-width: var(--ancho); margin: 0 auto; padding: 0 var(--gutter); }
.solo-lectores { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.seccion { padding: 110px 0; }
.seccion--hueso { background: var(--hueso); }
.seccion--oscura { background: var(--negro); color: var(--blanco); }
.seccion--oscura p { color: var(--texto-claro); }

.encabezado-seccion { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.encabezado-seccion .antetitulo { display: inline-block; font-size: .75rem; letter-spacing: .22em; text-transform: uppercase; color: var(--dorado); font-weight: 600; margin-bottom: 14px; }
.encabezado-seccion h2 { font-size: clamp(1.85rem, 4vw, 2.6rem); }
.encabezado-seccion p { margin-top: 18px; color: var(--texto-suave); }
.seccion--oscura .encabezado-seccion p { color: var(--texto-claro); }

/* ---------- Botones ---------- */
.boton {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px;
  font-family: var(--titulo); font-size: .9rem; font-weight: 500;
  border: 1px solid transparent; border-radius: var(--radio);
  cursor: pointer; transition: all .28s var(--ease);
}
.boton--oscuro  { background: var(--negro); color: #fff; }
.boton--oscuro:hover  { background: var(--dorado); }
.boton--claro   { background: #fff; color: var(--negro); }
.boton--claro:hover    { background: var(--dorado); color: #fff; }
.boton--dorado  { background: var(--dorado); color: #fff; }
.boton--dorado:hover   { background: var(--dorado-claro); }
.boton--linea   { border-color: rgba(255,255,255,.4); color: #fff; }
.boton--linea:hover    { background: #fff; color: var(--negro); border-color: #fff; }
.boton .flecha { transition: transform .28s var(--ease); }
.boton:hover .flecha { transform: translateX(4px); }

/* =========================================================
   Logo
   ========================================================= */
.logo { display: inline-flex; align-items: center; gap: 12px; }
.logo svg { width: 38px; height: 38px; flex: none; }
.logo .texto {
  font-family: var(--titulo); font-weight: 700; font-size: 1.32rem;
  letter-spacing: .01em; line-height: 1; white-space: nowrap;
}
.logo .texto b { color: var(--dorado); font-weight: 700; }
.logo--claro  { color: #fff; }
.logo--claro .texto { color: #fff; }
.logo--oscuro { color: var(--negro); }
.logo--oscuro .texto { color: var(--negro); }

/* =========================================================
   Header
   ========================================================= */
.encabezado {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background .35s var(--ease), height .35s var(--ease), box-shadow .35s var(--ease);
}
.encabezado .contenedor { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.encabezado.solido,
.encabezado.interna {
  background: rgba(18, 18, 18, .96);
  backdrop-filter: saturate(140%) blur(10px);
  box-shadow: 0 1px 0 var(--linea-oscura);
}
.encabezado.solido { height: 70px; }

.nav-principal ul { display: flex; align-items: center; gap: 34px; }
.nav-principal a {
  position: relative; font-size: .9rem; font-weight: 500; color: rgba(255,255,255,.86);
  padding: 6px 0; transition: color .25s var(--ease);
}
.nav-principal a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--dorado); transition: width .3s var(--ease);
}
.nav-principal a:hover, .nav-principal a.activo { color: #fff; }
.nav-principal a:hover::after, .nav-principal a.activo::after { width: 100%; }

.acciones-header { display: flex; align-items: center; gap: 14px; }
.acciones-header .boton { padding: 12px 24px; }

.boton-menu {
  display: none; width: 44px; height: 44px; background: none; border: 0; cursor: pointer;
  align-items: center; justify-content: center; color: #fff;
}
.boton-menu span { display: block; width: 24px; height: 2px; background: currentColor; position: relative; transition: background .2s; }
.boton-menu span::before, .boton-menu span::after {
  content: ""; position: absolute; left: 0; width: 24px; height: 2px; background: currentColor;
  transition: transform .3s var(--ease);
}
.boton-menu span::before { top: -7px; }
.boton-menu span::after  { top: 7px; }
.boton-menu[aria-expanded="true"] span { background: transparent; }
.boton-menu[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.boton-menu[aria-expanded="true"] span::after  { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 980px) {
  .boton-menu { display: flex; }
  .acciones-header .boton { display: none; }
  .nav-principal {
    position: fixed; inset: var(--header-h) 0 auto 0;
    background: rgba(18,18,18,.98); backdrop-filter: blur(10px);
    padding: 8px 0 26px;
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .28s var(--ease), transform .28s var(--ease);
    border-top: 1px solid var(--linea-oscura);
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  }
  .nav-principal.abierto { opacity: 1; transform: none; pointer-events: auto; }
  .nav-principal ul { flex-direction: column; align-items: stretch; gap: 0; padding: 0 var(--gutter); }
  .nav-principal a { display: block; padding: 15px 0; border-bottom: 1px solid var(--linea-oscura); font-size: 1rem; }
  .nav-principal a::after { display: none; }
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  color: #fff; overflow: hidden;
  padding: calc(var(--header-h) + 60px) 0 90px;
}
.hero-fondo { position: absolute; inset: 0; z-index: 0; }
.hero-fondo .capa {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0; transition: opacity 1.6s var(--ease);
  transform: scale(1.04);
  /* El zoom dura mas que el intervalo del slider (6.5s) y se reinicia por capa
     desde main.js, para que cada imagen entre siempre en la misma escala. */
  animation: heroZoom 9s linear forwards;
}
.hero-fondo .capa.visible { opacity: 1; }
@keyframes heroZoom { from { transform: scale(1.04); } to { transform: scale(1.12); } }
.hero-fondo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(10,10,10,.86) 0%, rgba(10,10,10,.6) 48%, rgba(10,10,10,.22) 100%),
              linear-gradient(to top, rgba(10,10,10,.55), rgba(10,10,10,0) 45%);
}
.hero .contenedor { position: relative; z-index: 1; }
.hero-texto { max-width: 760px; }
.hero .antetitulo {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: .74rem; letter-spacing: .24em; text-transform: uppercase;
  color: var(--dorado-claro); font-weight: 600; margin-bottom: 22px;
}
.hero .antetitulo::before { content: ""; width: 42px; height: 1px; background: var(--dorado); }
.hero h1 { font-size: clamp(2.3rem, 6.2vw, 4.15rem); letter-spacing: -.03em; }
.hero h1 em { font-style: normal; color: var(--dorado-claro); }
.hero .bajada { margin-top: 24px; font-size: clamp(1rem, 1.6vw, 1.15rem); color: rgba(255,255,255,.82); max-width: 600px; }
.hero-botones { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }

.hero-datos {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 30px; margin-top: 72px; padding-top: 34px;
  border-top: 1px solid rgba(255,255,255,.16); max-width: 760px;
}
.hero-datos .cifra { font-family: var(--titulo); font-size: 2.1rem; font-weight: 700; color: var(--dorado-claro); line-height: 1; }
.hero-datos .rotulo { font-size: .82rem; color: rgba(255,255,255,.66); margin-top: 8px; }

.hero-slider-puntos { position: absolute; right: 34px; bottom: 40px; z-index: 2; display: flex; gap: 10px; }
.hero-slider-puntos button {
  width: 32px; height: 3px; border: 0; padding: 0; cursor: pointer;
  background: rgba(255,255,255,.3); transition: background .3s var(--ease);
}
.hero-slider-puntos button[aria-current="true"] { background: var(--dorado); }

@media (max-width: 640px) {
  .hero-datos { grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 48px; }
  .hero-slider-puntos { display: none; }
}

/* =========================================================
   Franja de credenciales
   ========================================================= */
.franja { background: var(--negro-2); color: #fff; padding: 30px 0; }
.franja ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px 46px; }
.franja li { display: flex; align-items: center; gap: 12px; font-size: .88rem; color: rgba(255,255,255,.8); }
.franja svg { width: 20px; height: 20px; color: var(--dorado); flex: none; }
@media (max-width: 700px) {
  .franja ul { flex-direction: column; align-items: flex-start; width: max-content; max-width: 100%; margin: 0 auto; gap: 14px; }
}

/* =========================================================
   Nosotros
   ========================================================= */
.nosotros-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 70px; align-items: center; }
.nosotros-figura { position: relative; }
.nosotros-figura img { width: 100%; height: 560px; object-fit: cover; border-radius: var(--radio); filter: grayscale(1) contrast(1.05) brightness(.72); }
.nosotros-figura .marca {
  position: absolute; inset: 0; display: grid; place-items: center; pointer-events: none;
}
.nosotros-figura .marca svg { width: 46%; max-width: 260px; height: auto; opacity: .95; }
.nosotros-figura .sello {
  position: absolute; right: -22px; bottom: 40px;
  background: var(--dorado); color: #fff; padding: 22px 26px; border-radius: var(--radio);
  font-family: var(--titulo); line-height: 1.2; box-shadow: 0 18px 40px rgba(0,0,0,.18);
}
.nosotros-figura .sello strong { display: block; font-size: 2rem; font-weight: 700; }
.nosotros-figura .sello span { display: block; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; opacity: .9; }

.nosotros-texto h2 { font-size: clamp(1.85rem, 3.6vw, 2.5rem); margin-bottom: 24px; }
.nosotros-texto .destacado { font-size: 1.08rem; color: var(--texto); font-weight: 500; }
.nosotros-texto p { color: var(--texto-suave); }
.nosotros-lista { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 26px; margin: 30px 0 34px; }
.nosotros-lista li { display: flex; gap: 10px; align-items: flex-start; font-size: .93rem; }
.nosotros-lista svg { width: 18px; height: 18px; color: var(--dorado); flex: none; margin-top: 5px; }

@media (max-width: 900px) {
  .nosotros-grid { grid-template-columns: 1fr; gap: 46px; }
  .nosotros-figura img { height: 380px; }
  .nosotros-figura .sello { right: 16px; }
  .nosotros-lista { grid-template-columns: 1fr; }
}

/* =========================================================
   Servicios
   ========================================================= */
.servicios-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.servicio {
  background: #fff; border: 1px solid var(--linea); border-radius: var(--radio);
  padding: 40px 32px; transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
  position: relative; overflow: hidden;
}
.servicio::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0; background: var(--dorado);
  transition: width .4s var(--ease);
}
.servicio:hover { transform: translateY(-6px); box-shadow: 0 22px 46px rgba(0,0,0,.09); border-color: transparent; }
.servicio:hover::before { width: 100%; }
.servicio .icono {
  width: 54px; height: 54px; border-radius: var(--radio); display: grid; place-items: center;
  background: var(--dorado-tenue); color: var(--dorado); margin-bottom: 22px;
}
.servicio .icono svg { width: 26px; height: 26px; }
.servicio h3 { font-size: 1.1rem; margin-bottom: 12px; }
.servicio p { font-size: .93rem; color: var(--texto-suave); margin: 0; }

@media (max-width: 1024px) { .servicios-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px)  { .servicios-grid { grid-template-columns: 1fr; } }

/* =========================================================
   Portfolio
   ========================================================= */
.filtros { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px; margin-bottom: 46px; position: relative; }
.filtros::after { content: ""; position: absolute; left: 50%; transform: translateX(-50%); bottom: 0; width: min(420px, 90%); height: 1px; background: var(--linea); }
.filtros button {
  position: relative; background: none; border: 0; cursor: pointer;
  padding: 10px 20px 14px; font-family: var(--titulo); font-size: .93rem; font-weight: 500;
  color: var(--texto-suave); transition: color .25s var(--ease);
}
.filtros button::after {
  content: ""; position: absolute; left: 50%; transform: translateX(-50%); bottom: 0;
  height: 3px; width: 0; background: var(--dorado); transition: width .3s var(--ease); z-index: 1;
}
.filtros button:hover { color: var(--texto); }
.filtros button[aria-pressed="true"] { color: var(--dorado); }
.filtros button[aria-pressed="true"]::after { width: 100%; }

.portfolio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.proyecto-tarjeta {
  position: relative; display: block; aspect-ratio: 4 / 3; overflow: hidden; background: var(--negro-2);
  transition: opacity .35s var(--ease), transform .35s var(--ease);
}
.proyecto-tarjeta img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease), filter .5s var(--ease);
}
.proyecto-tarjeta::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,.94) 0%, rgba(10,10,10,.78) 26%, rgba(10,10,10,.12) 72%, rgba(10,10,10,0) 100%);
  opacity: 1; transition: opacity .4s var(--ease), background .4s var(--ease);
}
.proyecto-tarjeta:hover img { transform: scale(1.07); }
.proyecto-tarjeta:hover::after { background: linear-gradient(to top, rgba(163,143,93,.92), rgba(163,143,93,.72)); }
.proyecto-info {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  padding: 30px 32px; color: #fff;
  transform: translateY(12px); transition: transform .4s var(--ease);
}
.proyecto-tarjeta:hover .proyecto-info { transform: none; }
.proyecto-info h3 { font-size: 1.22rem; margin-bottom: 4px; text-shadow: 0 1px 14px rgba(0,0,0,.55); }
.proyecto-info .categoria { font-size: .85rem; color: rgba(255,255,255,.85); text-shadow: 0 1px 12px rgba(0,0,0,.5); }
.proyecto-info .flecha {
  display: block; margin-top: 16px; opacity: 0; transform: translateY(8px);
  transition: opacity .4s var(--ease) .05s, transform .4s var(--ease) .05s;
}
.proyecto-tarjeta:hover .proyecto-info .flecha { opacity: 1; transform: none; }
.proyecto-tarjeta.oculto { display: none; }

@media (max-width: 1024px) { .portfolio-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px)  { .portfolio-grid { grid-template-columns: 1fr; } }

/* =========================================================
   Proceso
   ========================================================= */
.proceso-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 34px; }
.paso { position: relative; padding-top: 30px; }
.paso::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: var(--linea-oscura);
}
.paso .numero {
  font-family: var(--titulo); font-size: .78rem; font-weight: 600; letter-spacing: .2em;
  color: var(--dorado); display: block; margin-bottom: 16px;
}
.paso h3 { font-size: 1.12rem; margin-bottom: 10px; color: #fff; }
.paso p { font-size: .93rem; margin: 0; }
@media (max-width: 900px) { .proceso-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }
@media (max-width: 520px) { .proceso-grid { grid-template-columns: 1fr; } }

/* =========================================================
   CTA
   ========================================================= */
.cta { position: relative; padding: 120px 0; color: #fff; text-align: center; overflow: hidden; }
.cta-fondo { position: absolute; inset: 0; background-size: cover; background-position: center; filter: grayscale(1); }
.cta-fondo::after { content: ""; position: absolute; inset: 0; background: rgba(15,15,15,.88); }
.cta .contenedor { position: relative; z-index: 1; max-width: 820px; }
.cta h2 { font-size: clamp(1.9rem, 4.4vw, 2.9rem); }
.cta p { margin: 22px auto 34px; color: rgba(255,255,255,.78); }
.cta-botones { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* =========================================================
   Editorial
   ========================================================= */
.editorial { display: grid; grid-template-columns: .95fr 1.05fr; gap: 60px; align-items: center; }
.editorial-portada {
  aspect-ratio: 3 / 2; border-radius: var(--radio); overflow: hidden; background: var(--negro-2);
}
.editorial-portada img { width: 100%; height: 100%; object-fit: cover; }
.editorial .antetitulo { display: inline-block; font-size: .75rem; letter-spacing: .22em; text-transform: uppercase; color: var(--dorado); font-weight: 600; margin-bottom: 14px; }
.editorial h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); margin-bottom: 18px; }
.editorial blockquote {
  margin: 0 0 22px; padding-left: 22px; border-left: 3px solid var(--dorado);
  font-size: 1.02rem; color: var(--texto); font-style: italic;
}
.editorial .firma { font-size: .86rem; color: var(--texto-suave); margin-bottom: 26px; }
@media (max-width: 860px) { .editorial { grid-template-columns: 1fr; gap: 36px; } }

/* =========================================================
   Contacto
   ========================================================= */
.contacto-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; align-items: start; }
.contacto-datos h2 { font-size: clamp(1.85rem, 3.6vw, 2.4rem); margin-bottom: 20px; }
.contacto-datos > p { color: var(--texto-suave); margin-bottom: 32px; }
.dato { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--linea); }
.dato:first-of-type { border-top: 1px solid var(--linea); }
.dato .icono { width: 42px; height: 42px; flex: none; border-radius: var(--radio); background: var(--dorado-tenue); color: var(--dorado); display: grid; place-items: center; }
.dato .icono svg { width: 19px; height: 19px; }
.dato .rotulo { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--texto-suave); }
.dato .valor { font-family: var(--titulo); font-weight: 500; font-size: 1rem; word-break: break-word; }
.dato a:hover { color: var(--dorado); }

.formulario { background: #fff; border: 1px solid var(--linea); border-radius: var(--radio); padding: 40px; }
.campos { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.campo { display: flex; flex-direction: column; gap: 7px; }
.campo--ancho { grid-column: 1 / -1; }
.campo label { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--texto-suave); font-weight: 500; }
.campo input, .campo textarea, .campo select {
  width: 100%; padding: 14px 16px; background: var(--hueso);
  border: 1px solid var(--linea); border-radius: var(--radio);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.campo textarea { min-height: 140px; resize: vertical; }
.campo input:focus, .campo textarea:focus, .campo select:focus {
  outline: none; border-color: var(--dorado); background: #fff;
}
.formulario .boton { width: 100%; justify-content: center; margin-top: 22px; }
.aviso-formulario { font-size: .82rem; color: var(--texto-suave); margin: 16px 0 0; text-align: center; }
.mapa { margin-top: 46px; border-radius: var(--radio); overflow: hidden; border: 1px solid var(--linea); }
.mapa iframe { width: 100%; height: 320px; border: 0; display: block; filter: grayscale(.6); }

@media (max-width: 900px) {
  .contacto-grid { grid-template-columns: 1fr; gap: 44px; }
  .formulario { padding: 28px 22px; }
}
@media (max-width: 560px) { .campos { grid-template-columns: 1fr; } }

/* =========================================================
   Footer
   ========================================================= */
.pie { background: var(--negro-2); color: rgba(255,255,255,.66); padding: 84px 0 0; }
.pie-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 48px; }
.pie h4 { color: #fff; font-size: 1.05rem; margin-bottom: 22px; }
.pie p { font-size: .93rem; }
.pie a { transition: color .25s var(--ease); }
.pie a:hover { color: var(--dorado); }
.pie-enlaces li + li { margin-top: 11px; }
.pie-enlaces a { font-size: .93rem; }
.pie .logo { margin-bottom: 20px; }
.pie-contacto li { display: flex; gap: 11px; align-items: flex-start; font-size: .93rem; margin-top: 11px; }
.pie-contacto svg { width: 17px; height: 17px; color: var(--dorado); flex: none; margin-top: 5px; }

.newsletter-form { display: flex; gap: 10px; margin-bottom: 24px; flex-wrap: wrap; }
.newsletter-form input {
  flex: 1 1 170px; padding: 13px 16px; background: rgba(255,255,255,.06);
  border: 1px solid var(--linea-oscura); border-radius: var(--radio); color: #fff;
}
.newsletter-form input::placeholder { color: rgba(255,255,255,.4); }
.newsletter-form input:focus { outline: none; border-color: var(--dorado); }
.newsletter-form .boton { padding: 13px 22px; }

.redes { display: flex; gap: 10px; }
.redes a {
  width: 40px; height: 40px; display: grid; place-items: center;
  border: 1px solid var(--linea-oscura); border-radius: var(--radio); color: rgba(255,255,255,.7);
  transition: all .28s var(--ease);
}
.redes a:hover { background: var(--dorado); border-color: var(--dorado); color: #fff; }
.redes svg { width: 17px; height: 17px; }

.pie-base {
  margin-top: 64px; border-top: 1px solid var(--linea-oscura); padding: 26px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  font-size: .85rem;
}

@media (max-width: 980px) { .pie-grid { grid-template-columns: 1fr 1fr; gap: 40px; } }
@media (max-width: 560px) { .pie-grid { grid-template-columns: 1fr; } .pie-base { justify-content: center; text-align: center; } }

/* Botón volver arriba */
.arriba {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--dorado); color: #fff; display: grid; place-items: center;
  opacity: 0; pointer-events: none; transform: translateY(10px);
  transition: all .3s var(--ease); box-shadow: 0 10px 26px rgba(0,0,0,.22);
}
.arriba.visible { opacity: 1; pointer-events: auto; transform: none; }
.arriba:hover { background: var(--negro); }

/* =========================================================
   Página de proyecto
   ========================================================= */
.proyecto-hero {
  position: relative; min-height: 62vh; display: flex; align-items: flex-end;
  padding: calc(var(--header-h) + 90px) 0 64px; color: #fff; overflow: hidden;
}
.proyecto-hero .fondo { position: absolute; inset: 0; background-size: cover; background-position: center; }
.proyecto-hero .fondo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(10,10,10,.92), rgba(10,10,10,.4)); }
.proyecto-hero .contenedor { position: relative; z-index: 1; }
.migas { font-size: .84rem; color: rgba(255,255,255,.6); margin-bottom: 18px; }
.migas a:hover { color: var(--dorado-claro); }
.migas span { margin: 0 8px; opacity: .5; }
.proyecto-hero h1 { font-size: clamp(2rem, 5vw, 3.3rem); }
.proyecto-hero .categoria { color: var(--dorado-claro); font-size: .8rem; letter-spacing: .2em; text-transform: uppercase; font-weight: 600; margin-bottom: 16px; display: block; }

.ficha { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; margin-top: 44px; padding-top: 30px; border-top: 1px solid rgba(255,255,255,.18); }
.ficha .rotulo { font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: rgba(255,255,255,.55); margin-bottom: 6px; }
.ficha .valor { font-family: var(--titulo); font-weight: 500; font-size: 1rem; }
@media (max-width: 700px) { .ficha { grid-template-columns: 1fr 1fr; gap: 22px; } }

.proyecto-cuerpo { display: grid; grid-template-columns: 1.5fr .8fr; gap: 64px; align-items: start; }
.proyecto-cuerpo h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 20px; }
.proyecto-cuerpo p { color: var(--texto-suave); }
.proyecto-cuerpo .destacado { font-size: 1.06rem; color: var(--texto); font-weight: 500; }
.aparte { background: var(--hueso); border-radius: var(--radio); padding: 32px; position: sticky; top: 100px; }
.aparte h3 { font-size: 1rem; margin-bottom: 18px; }
.aparte ul li { display: flex; gap: 10px; align-items: flex-start; font-size: .92rem; padding: 9px 0; border-bottom: 1px solid var(--linea); }
.aparte ul li:last-child { border-bottom: 0; }
.aparte svg { width: 17px; height: 17px; color: var(--dorado); flex: none; margin-top: 5px; }
@media (max-width: 900px) { .proyecto-cuerpo { grid-template-columns: 1fr; gap: 40px; } .aparte { position: static; } }

.galeria { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; grid-auto-rows: clamp(150px, 17vw, 235px); }
.galeria button {
  padding: 0; border: 0; background: var(--negro-2); cursor: zoom-in;
  overflow: hidden; border-radius: var(--radio); position: relative; height: 100%;
}
.galeria button:nth-child(6n + 1) { grid-column: span 2; grid-row: span 2; }
.galeria img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.galeria button:hover img { transform: scale(1.05); }
.galeria button::after {
  content: ""; position: absolute; inset: 0; background: rgba(163,143,93,.35);
  opacity: 0; transition: opacity .3s var(--ease);
}
.galeria button:hover::after { opacity: 1; }
@media (max-width: 800px) { .galeria { grid-template-columns: 1fr 1fr; gap: 10px; grid-auto-rows: clamp(120px, 26vw, 210px); } }

.otros-proyectos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
@media (max-width: 900px) { .otros-proyectos { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .otros-proyectos { grid-template-columns: 1fr; } }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 200; background: rgba(10,10,10,.96);
  display: none; align-items: center; justify-content: center; padding: 70px 60px;
}
.lightbox.abierto { display: flex; }
.lightbox img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: var(--radio); }
.lightbox .cerrar, .lightbox .previo, .lightbox .siguiente {
  position: absolute; background: rgba(255,255,255,.1); border: 0; color: #fff; cursor: pointer;
  width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center;
  transition: background .25s var(--ease);
}
.lightbox .cerrar:hover, .lightbox .previo:hover, .lightbox .siguiente:hover { background: var(--dorado); }
.lightbox .cerrar { top: 20px; right: 20px; }
.lightbox .previo { left: 16px; top: 50%; transform: translateY(-50%); }
.lightbox .siguiente { right: 16px; top: 50%; transform: translateY(-50%); }
.lightbox .contador { position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.6); font-size: .85rem; }
@media (max-width: 640px) { .lightbox { padding: 60px 12px; } .lightbox .previo { left: 6px; } .lightbox .siguiente { right: 6px; } }

/* ---------- Aparición al hacer scroll ---------- */
.revelar { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.revelar.dentro { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .revelar { opacity: 1; transform: none; } }

@media (max-width: 640px) { .seccion { padding: 76px 0; } }