/* ============================================================
   Mónica Diago — Arquitectura e Interiorismo
   Diseño: editorial, sereno, sofisticado. Mobile-first.
   ============================================================ */

:root {
  --crema: #f6f3ee;
  --blanco: #fdfcfa;
  --tinta: #1d1b17;
  --piedra: #76705f;
  --arena: #d8d1c4;
  --bronce: #9b7b52;
  --serif: "Marcellus", "Georgia", serif;
  --sans: "Inter", -apple-system, "Helvetica Neue", sans-serif;
  --ancho: 1200px;
  --pad: clamp(1.25rem, 4vw, 3rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--tinta);
  background: var(--crema);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.contenedor { max-width: var(--ancho); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }

.etiqueta {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bronce);
  font-weight: 500;
  display: block;
  margin-bottom: 1rem;
}

/* ---------- Cabecera ---------- */
.cabecera {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background 0.35s ease, box-shadow 0.35s ease;
}
.cabecera.solida { background: rgba(246, 243, 238, 0.94); backdrop-filter: blur(8px); box-shadow: 0 1px 0 rgba(29,27,23,0.07); }

/* Home: header claro sobre el hero, con velo sutil; al hacer scroll vuelve a crema */
body.home .cabecera:not(.solida) { background: linear-gradient(180deg, rgba(20,18,14,0.50) 0%, rgba(20,18,14,0) 100%); }
body.home .cabecera:not(.solida) .logo,
body.home .cabecera:not(.solida) .logo span,
body.home .cabecera:not(.solida) .nav a { color: #fff; }
body.home .cabecera:not(.solida) .logo-sub { color: rgba(255,255,255,0.82); }
body.home .cabecera:not(.solida) .nav a:hover,
body.home .cabecera:not(.solida) .nav a[aria-current="page"] { border-color: #fff; }
body.home .cabecera:not(.solida) .menu-btn span { background: #fff; }
.cabecera-int { display: flex; align-items: center; justify-content: space-between; height: 4.5rem; }

.logo { font-family: var(--serif); font-size: 1.3rem; letter-spacing: 0.02em; line-height: 1.1; }
.logo span { color: var(--bronce); }
.logo-sub {
  display: block; font-family: var(--sans); font-weight: 400;
  font-size: 0.52rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--piedra); margin-top: 0.2rem;
}
.pie .logo-sub { color: rgba(246, 243, 238, 0.55); }

.nav { display: none; }
.nav a {
  font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase;
  margin-left: 2.2rem; padding-bottom: 0.3rem; border-bottom: 1px solid transparent;
  transition: border-color 0.25s;
}
.nav a:hover, .nav a[aria-current="page"] { border-color: var(--bronce); }

.menu-btn {
  display: flex; flex-direction: column; gap: 6px;
  background: none; border: 0; cursor: pointer; padding: 0.5rem;
}
.menu-btn span { width: 26px; height: 1px; background: var(--tinta); transition: transform 0.3s, opacity 0.3s; }
.menu-abierto .menu-btn span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-abierto .menu-btn span:nth-child(2) { opacity: 0; }
.menu-abierto .menu-btn span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-movil {
  position: fixed; inset: 0; background: var(--crema); z-index: 40;
  display: flex; flex-direction: column; justify-content: center; padding: var(--pad);
  opacity: 0; pointer-events: none; transition: opacity 0.35s ease;
}
.menu-abierto .nav-movil { opacity: 1; pointer-events: auto; }
.nav-movil a {
  font-family: var(--serif); font-size: clamp(2rem, 8vw, 3rem);
  padding: 0.4rem 0; border-bottom: 1px solid var(--arena);
}
.nav-movil a:last-child { border-bottom: 0; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 92svh; display: flex; align-items: flex-end; color: #fff; }
.hero-img { position: absolute; inset: 0; overflow: hidden; }
.hero-img img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 0.8s ease; }
.hero-img img.activa { opacity: 1; }
.hero-img::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,18,14,0.25) 0%, rgba(20,18,14,0.05) 40%, rgba(20,18,14,0.45) 68%, rgba(20,18,14,0.72) 100%);
}
.hero-cont { position: relative; z-index: 1; padding-bottom: clamp(3rem, 8vh, 6rem); width: 100%; }
.hero .etiqueta { color: #fff; font-weight: 600; text-shadow: 0 1px 5px rgba(20, 18, 14, 0.55), 0 0 22px rgba(20, 18, 14, 0.4); }
.hero h1 { font-size: clamp(2rem, 5.5vw, 3.8rem); max-width: 24ch; text-shadow: 0 1px 18px rgba(20, 18, 14, 0.3); }
.hero p { margin-top: 1.2rem; max-width: 44ch; font-size: clamp(0.95rem, 2vw, 1.1rem); color: rgba(255,255,255,0.88); }

/* ---------- Botones ---------- */
.btn {
  display: inline-block; margin-top: 2rem;
  font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; font-weight: 500;
  padding: 1rem 2.2rem; border: 1px solid currentColor;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.btn:hover { background: var(--tinta); color: var(--crema); border-color: var(--tinta); }
.hero .btn:hover { background: #fff; color: var(--tinta); border-color: #fff; }
.btn-oscuro { background: var(--tinta); color: var(--crema); border-color: var(--tinta); }
.btn-oscuro:hover { background: transparent; color: var(--tinta); }

/* ---------- Secciones ---------- */
.seccion { padding: clamp(4rem, 10vw, 7.5rem) 0; }
.seccion-titulo { font-size: clamp(1.9rem, 4.5vw, 3rem); max-width: 22ch; }
.seccion-cab { margin-bottom: clamp(2.5rem, 6vw, 4.5rem); }
.seccion-cab.con-enlace { display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: flex-end; justify-content: space-between; }

.enlace-linea {
  font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; font-weight: 500;
  border-bottom: 1px solid var(--bronce); padding-bottom: 0.35rem; white-space: nowrap;
  transition: color 0.25s;
}
.enlace-linea:hover { color: var(--bronce); }

/* ---------- Manifiesto ---------- */
.manifiesto { background: var(--crema); text-align: center; }
.manifiesto p.grande {
  font-family: var(--serif); font-size: clamp(1.4rem, 3.4vw, 2.3rem); line-height: 1.4;
  max-width: 30ch; margin: 0 auto;
}
.manifiesto p.grande em { font-style: normal; color: var(--bronce); }
.manifiesto p.sub { margin: 1.6rem auto 0; max-width: 52ch; color: var(--piedra); font-size: 1rem; }

/* ---------- Rejilla de proyectos ---------- */
.rejilla { display: grid; grid-template-columns: 1fr; gap: 2.5rem var(--pad); }
.tarjeta { display: block; }
.tarjeta-img { overflow: hidden; aspect-ratio: 4 / 3; background: var(--arena); }
.tarjeta-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1); }
.tarjeta:hover .tarjeta-img img { transform: scale(1.045); }
.tarjeta-zona { margin-top: 1.1rem; font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--piedra); }
.tarjeta h3 { font-size: 1.35rem; margin-top: 0.3rem; }

.tarjeta-grande .tarjeta-img { aspect-ratio: 16 / 10; }

/* ---------- Filtros ---------- */
.filtros { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 3rem; }
.filtro {
  font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 0.55rem 1.2rem; border: 1px solid var(--arena); border-radius: 100px;
  background: transparent; color: var(--tinta); cursor: pointer; font-family: var(--sans);
  transition: all 0.25s;
}
.filtro:hover { border-color: var(--tinta); }
.filtro.activo { background: var(--tinta); color: var(--crema); border-color: var(--tinta); }

/* ---------- Servicios / proceso ---------- */
.fondo-blanco { background: var(--blanco); }
.fondo-oscuro { background: var(--tinta); color: var(--crema); }
.fondo-oscuro .etiqueta { color: var(--bronce); }
.fondo-oscuro .seccion-titulo { color: var(--crema); }

.pasos { display: grid; grid-template-columns: 1fr; gap: 2.8rem; counter-reset: paso; }
.paso { border-top: 1px solid var(--arena); padding-top: 1.5rem; }
.fondo-oscuro .paso { border-color: rgba(246,243,238,0.2); }
.paso-num { font-family: var(--serif); font-size: 1rem; color: var(--bronce); display: block; margin-bottom: 0.8rem; }
.paso h3 { font-size: 1.3rem; margin-bottom: 0.7rem; }
.paso p { font-size: 0.95rem; color: var(--piedra); }
.fondo-oscuro .paso p { color: rgba(246,243,238,0.7); }

/* ---------- Servicios en cuadrícula ---------- */
.servicios-lista { display: grid; grid-template-columns: 1fr; gap: 3rem var(--pad); }
.servicio-img { overflow: hidden; aspect-ratio: 3 / 2; background: var(--arena); margin-bottom: 1.4rem; }
.servicio-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1); }
.servicio:hover .servicio-img img { transform: scale(1.03); }
.servicio .paso-num { font-size: 1.05rem; }
.servicio h3 { font-size: clamp(1.3rem, 2.6vw, 1.6rem); margin-bottom: 0.7rem; }
.servicio p { color: var(--piedra); font-size: 0.95rem; }
.servicio .precio { margin-top: 0.9rem; color: var(--bronce); font-weight: 500; font-size: 0.9rem; letter-spacing: 0.05em; }
@media (min-width: 760px) {
  .servicios-lista { grid-template-columns: repeat(2, 1fr); gap: 4rem var(--pad); }
}

/* ---------- Estudio / split ---------- */
.split { display: grid; grid-template-columns: 1fr; gap: 3rem; align-items: center; }
.split-img img { width: 100%; height: auto; }
.split-img video { width: 100%; height: auto; display: block; max-height: 80vh; object-fit: cover; }
.video-envoltura { position: relative; }
.video-audio {
  position: absolute; bottom: 0.9rem; right: 0.9rem;
  width: 2.6rem; height: 2.6rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(29, 27, 23, 0.55); color: #fff; border: 1px solid rgba(255,255,255,0.35);
  cursor: pointer; backdrop-filter: blur(4px); transition: background 0.25s;
}
.video-audio:hover { background: rgba(29, 27, 23, 0.8); }
.split-texto p { margin-bottom: 1.2rem; color: var(--piedra); }
.split-texto p strong { color: var(--tinta); font-weight: 500; }
.firma { font-family: var(--serif); font-style: normal; font-size: 1.4rem; color: var(--tinta); margin-top: 1.5rem; }

/* ---------- Testimonios ---------- */
.testimonios { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
.testimonio { border-top: 1px solid var(--arena); padding-top: 1.8rem; }
.testimonio blockquote { font-family: var(--serif); font-size: 1.15rem; line-height: 1.55; }
.testimonio cite { display: block; margin-top: 1.2rem; font-style: normal; font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bronce); }

/* ---------- Marcas (Diago Home / Lumier) ---------- */
.marcas { display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--arena); border-top: 1px solid var(--arena); border-bottom: 1px solid var(--arena); }
.marca { background: var(--crema); padding: clamp(2.5rem, 6vw, 4rem) var(--pad); transition: background 0.3s; }
.marca:hover { background: var(--blanco); }
.marca h3 { font-size: 1.6rem; }
.marca p { margin-top: 0.8rem; color: var(--piedra); font-size: 0.95rem; max-width: 52ch; }
.marca .enlace-linea { display: inline-block; margin-top: 1.4rem; }

/* ---------- Instagram ---------- */
.ig-banda { text-align: center; }
.ig-feed { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.6rem; margin: 2.5rem auto 0.5rem; max-width: 1000px; }
.ig-feed a { display: block; aspect-ratio: 1; overflow: hidden; }
.ig-feed img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s; }
.ig-feed a:hover img { transform: scale(1.05); opacity: 0.9; }
@media (min-width: 760px) { .ig-feed { grid-template-columns: repeat(6, 1fr); } }
.ig-banda .seguidores { font-family: var(--serif); font-size: clamp(2.6rem, 7vw, 4.5rem); }
.ig-banda p { color: var(--piedra); max-width: 48ch; margin: 0.8rem auto 0; }

/* ---------- Ficha de proyecto ---------- */
.proyecto-hero { padding-top: 8rem; }
.proyecto-hero h1 { font-size: clamp(2rem, 5.5vw, 3.6rem); max-width: 20ch; }
.proyecto-meta { display: flex; gap: 2rem; margin: 1.6rem 0 2.5rem; font-size: 0.75rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--piedra); }
.proyecto-cuerpo { max-width: 70ch; }
.proyecto-cuerpo p { margin-bottom: 1.3rem; }

.galeria { display: grid; grid-template-columns: 1fr; gap: 1.2rem; margin-top: 3.5rem; }
.galeria a { overflow: hidden; cursor: zoom-in; }
.galeria img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s cubic-bezier(0.22,1,0.36,1); }
.galeria a:hover img { transform: scale(1.03); }

.proyecto-nav { display: flex; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--arena); margin-top: 4rem; padding-top: 2rem; }
.proyecto-nav a { max-width: 45%; }
.proyecto-nav .dir { font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bronce); display: block; margin-bottom: 0.4rem; }
.proyecto-nav .titulo-nav { font-family: var(--serif); font-size: 1.05rem; line-height: 1.3; }
.proyecto-nav .siguiente { text-align: right; margin-left: auto; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 100; background: rgba(20, 18, 14, 0.96);
  display: none; align-items: center; justify-content: center; padding: 2rem;
}
.lightbox.abierto { display: flex; }
.lightbox img { max-width: 100%; max-height: 88vh; object-fit: contain; }
.lightbox button {
  position: absolute; background: none; border: 0; color: rgba(255,255,255,0.85);
  font-size: 2rem; cursor: pointer; padding: 1rem; font-family: var(--sans); font-weight: 200;
}
.lightbox .lb-cerrar { top: 0.8rem; right: 1rem; }
.lightbox .lb-ant { left: 0.4rem; top: 50%; transform: translateY(-50%); }
.lightbox .lb-sig { right: 0.4rem; top: 50%; transform: translateY(-50%); }

/* ---------- Listas incluye / excluye ---------- */
.lista-servicio { list-style: none; display: grid; gap: 0.9rem; margin-top: 1.2rem; }
.lista-servicio li { padding-left: 2rem; position: relative; color: var(--piedra); }
.lista-servicio li::before { content: "✓"; position: absolute; left: 0; color: var(--bronce); font-weight: 600; }
.lista-servicio.excluye li::before { content: "✕"; color: #b05c3f; }

/* ---------- Formulario ---------- */
.formulario { background: var(--blanco); border: 1px solid var(--arena); padding: clamp(1.5rem, 4vw, 2.5rem); display: grid; gap: 1.2rem; }
.campo label { display: block; font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 500; color: var(--piedra); margin-bottom: 0.45rem; }
.campo input, .campo textarea {
  width: 100%; border: 1px solid var(--arena); background: var(--crema); padding: 0.85rem 1rem;
  font-family: var(--sans); font-size: 0.95rem; color: var(--tinta); border-radius: 0;
}
.campo input:focus, .campo textarea:focus { outline: none; border-color: var(--bronce); }
.campo textarea { resize: vertical; min-height: 7.5rem; }
.campo input[type="file"] { padding: 0.7rem; background: transparent; border-style: dashed; cursor: pointer; font-size: 0.85rem; color: var(--piedra); }
.campo .ayuda { font-size: 0.8rem; color: var(--piedra); margin-top: 0.4rem; }
.formulario .btn { margin-top: 0.4rem; cursor: pointer; font-family: var(--sans); background: var(--tinta); color: var(--crema); border-color: var(--tinta); }
.formulario .btn:hover { background: transparent; color: var(--tinta); }
.precio-caja { display: flex; align-items: baseline; gap: 0.6rem; margin: 1.6rem 0 0.4rem; }
.precio-caja .cifra { font-family: var(--serif); font-size: 2.4rem; }
.precio-caja .nota { color: var(--piedra); font-size: 0.85rem; }

/* ---------- Contacto ---------- */
.contacto-grande { font-family: var(--serif); font-size: clamp(1.6rem, 5vw, 3rem); line-height: 1.3; word-break: break-word; }
.contacto-grande a { border-bottom: 2px solid var(--bronce); transition: color 0.25s; }
.contacto-grande a:hover { color: var(--bronce); }
.contacto-datos { margin-top: 2.5rem; display: grid; gap: 1.8rem; grid-template-columns: 1fr; }
.contacto-datos h3 { font-size: 0.75rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bronce); font-family: var(--sans); font-weight: 500; margin-bottom: 0.5rem; }

/* ---------- CTA final ---------- */
.cta-final { text-align: center; }
.cta-final h2 { font-size: clamp(2rem, 5.5vw, 3.4rem); max-width: 20ch; margin: 0 auto; }
.cta-final p { color: var(--piedra); margin-top: 1.2rem; }
.fondo-oscuro.cta-final p { color: rgba(246,243,238,0.7); }

/* ---------- Pie ---------- */
.pie { background: var(--tinta); color: rgba(246,243,238,0.65); padding: 4rem 0 2.5rem; font-size: 0.9rem; }
.pie-int { display: grid; gap: 2.5rem; grid-template-columns: 1fr; }
.pie .logo { color: var(--crema); }
.pie h4 { font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bronce); font-weight: 500; margin-bottom: 1rem; }
.pie ul { list-style: none; }
.pie li { margin-bottom: 0.5rem; }
.pie a:hover { color: var(--crema); }
.pie-legal { margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid rgba(246,243,238,0.15); font-size: 0.78rem; display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; }

/* ---------- Animación de entrada ---------- */
@media (prefers-reduced-motion: no-preference) {
  .revelar { opacity: 0; transform: translateY(24px); transition: opacity 0.8s ease, transform 0.8s ease; }
  .revelar.visible { opacity: 1; transform: none; }
}

/* ---------- Página legal / texto ---------- */
.pagina-texto { padding-top: 9rem; max-width: 75ch; }
.pagina-texto h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 2rem; }
.pagina-texto h2 { font-size: 1.4rem; margin: 2.2rem 0 0.8rem; }
.pagina-texto p, .pagina-texto li { color: var(--piedra); margin-bottom: 1rem; }
.pagina-texto ul { padding-left: 1.2rem; }

/* ============================================================
   Escritorio
   ============================================================ */
@media (min-width: 760px) {
  .rejilla { grid-template-columns: repeat(2, 1fr); }
  .galeria { grid-template-columns: repeat(2, 1fr); }
  .galeria a.ancho { grid-column: span 2; }
  .pasos { grid-template-columns: repeat(2, 1fr); }
  .testimonios { grid-template-columns: repeat(3, 1fr); }
  .marcas { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 5fr 6fr; gap: clamp(3rem, 7vw, 6rem); }
  .contacto-datos { grid-template-columns: repeat(3, 1fr); }
  .pie-int { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

@media (min-width: 1000px) {
  .nav { display: flex; }
  .menu-btn, .nav-movil { display: none; }
  .rejilla { grid-template-columns: repeat(3, 1fr); }
  .rejilla-2 { grid-template-columns: repeat(2, 1fr); }
  .pasos { grid-template-columns: repeat(4, 1fr); }
}