:root {
  /* Mercury — DESIGN.md */
  --fondo: #171721;       /* Onyx Canvas */
  --panel: #1e1e2a;       /* Graphite Card */
  --fondo-2: #272735;     /* Obsidian Button */
  --borde: #70707d;       /* Slate Border */
  --borde-claro: #e2e3ed; /* Mist Border */
  --suave: #c3c3cc;       /* Ash Text */
  --texto: #ededf3;       /* Ivory Text */
  --acento: #5266eb;      /* Cobalt: solo la acción principal */
  --acento-texto: #ffffff;
  --radio: 12px;          /* cards */
  --radio-boton: 32px;    /* buttons, inputs */
  --pildora: 40px;        /* nav, tags */
  /* --hero-foto: url('img/portada.jpg'); */
  --titulos: Archivo, 'Söhne Breit', Inter, system-ui, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--texto);
  font: 400 16px/1.5 Inter, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--titulos); font-stretch: 112%; line-height: 1.15; margin: 0; font-weight: 480; letter-spacing: 0.015em; }
p { margin: 0; }

.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* Navegación */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 10;
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  background: transparent;
  transition: background-color 0.25s ease;
}
.nav.con-fondo {
  background: rgba(23, 23, 33, 0.8);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.nav-brand {
  flex: none; display: grid; place-items: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: transparent; color: var(--texto);
  border: 1px solid var(--texto); box-shadow: inset 0 0 0 4px var(--fondo), inset 0 0 0 5px rgba(237, 237, 243, 0.35);
  font-weight: 530; text-decoration: none; font-size: 14px;
}
.nav-links { flex: 1; min-width: 0; display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.nav-cta { flex: none; min-height: 40px; padding: 0 20px; font-size: 14px; }
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  flex: none; display: inline-flex; align-items: center; min-height: 40px; padding: 0 20px; border-radius: var(--pildora);
  color: var(--texto); text-decoration: none; font-size: 16px; font-weight: 400;
}
.nav-links a:hover { background: rgba(237, 237, 243, 0.08); }

/* Portada */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding-top: 112px; padding-bottom: 72px; text-align: center;
}
.hero::before {
  content: ''; position: absolute; top: 0; bottom: 0; left: calc(50% - 50vw); right: calc(50% - 50vw); z-index: -1;
  background:
    linear-gradient(180deg, rgba(23, 23, 33, 0.55) 0%, rgba(23, 23, 33, 0.35) 45%, #171721 100%),
    var(--hero-foto, radial-gradient(90% 70% at 50% 20%, #34344a 0%, #22222f 45%, #171721 80%));
  background-size: cover; background-position: center;
}
.hero > * { max-width: 640px; }

/* Laptop de fondo que recorre las secciones del sitio */
.laptop {
  position: absolute; left: 50%; top: 50%; z-index: -1;
  width: min(80vw, 920px); max-width: none;
  transform: translate(-50%, -50%);
  opacity: 0.26; pointer-events: none;
  -webkit-mask-image: radial-gradient(75% 75% at 50% 45%, #000 55%, transparent 100%);
          mask-image: radial-gradient(75% 75% at 50% 45%, #000 55%, transparent 100%);
}
.laptop-tapa {
  position: relative; padding: 2.4% 2.4% 3.2%;
  background: linear-gradient(180deg, #2b2b3c 0%, #1d1d29 100%);
  border-radius: 18px 18px 6px 6px; box-shadow: inset 0 0 0 1px rgba(237, 237, 243, 0.22);
}
.laptop-tapa::before {
  content: ''; position: absolute; top: 1%; left: 50%; width: 5px; height: 5px; transform: translateX(-50%);
  border-radius: 50%; background: #3d3d52;
}
.laptop-pantalla { aspect-ratio: 16 / 10; overflow: hidden; border-radius: 6px; background: var(--fondo); }
.laptop-pantalla img { display: block; width: 100%; height: auto; animation: recorrer 35s ease-in-out infinite; }
.laptop-base {
  position: relative; width: 114%; margin-left: -7%; height: clamp(8px, 1.5vw, 16px);
  background: linear-gradient(180deg, #55556b 0%, #34344a 35%, #1f1f2c 100%);
  border-radius: 2px 2px 14px 14px / 2px 2px 10px 10px; box-shadow: inset 0 1px 0 rgba(237, 237, 243, 0.45);
}
.laptop-base::before {
  content: ''; position: absolute; left: 50%; top: 0; width: 14%; height: 38%; transform: translateX(-50%);
  background: #232332; border-radius: 0 0 8px 8px;
}
/* 7 pantallas (cada una 1/7 del alto): se detiene en cada sección y vuelve arriba */
@keyframes recorrer {
  0%, 9%     { transform: translateY(0); }
  13%, 22%   { transform: translateY(-14.2857%); }
  26%, 35%   { transform: translateY(-28.5714%); }
  39%, 48%   { transform: translateY(-42.8571%); }
  52%, 61%   { transform: translateY(-57.1429%); }
  65%, 74%   { transform: translateY(-71.4286%); }
  78%, 90%   { transform: translateY(-85.7143%); }
  96%, 100%  { transform: translateY(0); }
}
/* Bienvenida: sillón 3D que gira, se desarma y se vuelve a armar (sillon3d.js) */
.sillon3d { position: relative; width: min(100%, 440px); aspect-ratio: 4 / 3; margin: 0 auto 24px; }
.sillon3d canvas { display: block; width: 100% !important; height: 100% !important; opacity: 0; transition: opacity 0.6s ease; }
.sillon3d.listo canvas { opacity: 1; }

@media (max-width: 700px) {
  .laptop { top: 0; transform: translate(-50%, 8px); opacity: 0.2; }
  .hero .laptop { top: 72px; }
}
.kicker { color: var(--suave); font-size: 12px; font-weight: 480; letter-spacing: 0.01em; margin-bottom: 16px; }
.hero h1 { font-size: clamp(40px, 10vw, 65px); font-weight: 480; line-height: 1.1; letter-spacing: 0.01em; color: var(--acento-texto); }
.hero-titulo { font-size: 18px; color: var(--texto); font-weight: 480; margin-top: 16px; line-height: 1.35; }
.hero-resumen { color: var(--suave); margin: 16px auto 0; font-size: 16px; line-height: 1.5; }
.hero-acciones { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 32px; }
.hero-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 24px; margin-top: 24px; }
.hero-links a, .hero-links button {
  padding: 0; border: 0; background: none; cursor: pointer;
  color: var(--suave); font: inherit; font-size: 14px; letter-spacing: 0.005em;
  text-decoration: underline; text-underline-offset: 4px; text-decoration-color: rgba(195, 195, 204, 0.4);
}
.hero-links a:hover, .hero-links button:hover { color: var(--texto); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 20px; border-radius: var(--radio-boton);
  border: 1px solid var(--texto); background: transparent; color: var(--texto);
  text-decoration: none; font-weight: 400; font-size: 16px;
  transition: background-color 0.15s ease, filter 0.15s ease;
}
.btn:hover { background: rgba(237, 237, 243, 0.08); }
.btn-primario { background: var(--acento); color: var(--acento-texto); border-color: transparent; }
.btn-primario:hover { background: var(--acento); filter: brightness(1.12); }

/* Secciones */
.seccion { padding-top: 72px; padding-bottom: 0; }
.seccion-cab { margin-bottom: 32px; }
.seccion h2 { font-size: clamp(28px, 6.5vw, 42px); font-weight: 480; letter-spacing: 0.01em; }
.bajada { color: var(--suave); max-width: 640px; margin-top: 16px; font-size: 18px; line-height: 1.5; }
.sub { font-size: 12px; font-weight: 480; color: var(--suave); letter-spacing: 0.01em; margin: 0 0 12px; }

/* Pestañas (rubros / repos) */
.rubros { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 16px; scrollbar-width: none; }
.rubros::-webkit-scrollbar { display: none; }
.rubro {
  flex: none; min-height: 44px; padding: 0 20px; border-radius: var(--pildora);
  border: 0; background: var(--fondo-2); color: var(--texto);
  font: inherit; font-weight: 400; font-size: 15px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
}
.rubro[aria-selected='true'] { background: var(--acento); color: var(--acento-texto); }
.cuenta { font-size: 12px; padding: 1px 8px; border-radius: var(--pildora); background: rgba(237, 237, 243, 0.1); color: inherit; }
.rubro[aria-selected='true'] .cuenta { background: rgba(255, 255, 255, 0.2); }

/* Realidad Aumentada */
.ra-panel {
  display: grid; gap: 0;
  background: var(--panel); border-radius: var(--radio); overflow: hidden;
}
.ra-visor { position: relative; background: radial-gradient(circle at 50% 40%, #2c2c3e, #171721 70%); }
model-viewer { width: 100%; height: min(62vh, 480px); --poster-color: transparent; --progress-bar-color: transparent; }
.ar-btn {
  position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%);
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 52px; padding: 0 24px; border: 0; border-radius: var(--radio-boton);
  background: var(--acento); color: var(--acento-texto);
  font: inherit; font-weight: 400; font-size: 16px; white-space: nowrap;
  cursor: pointer;
}
.progreso { position: absolute; top: 0; left: 0; right: 0; height: 3px; background: rgba(255, 255, 255, 0.08); transition: opacity 0.3s; }
.progreso.oculto { opacity: 0; }
.progreso-barra { height: 100%; width: 0; background: var(--texto); transition: width 0.2s; }
.ra-aviso { position: absolute; top: 12px; left: 12px; right: 12px; text-align: center; font-size: 13px; color: var(--suave); background: rgba(23, 23, 33, 0.75); padding: 8px 12px; border-radius: var(--pildora); }
.ra-info { padding: 22px 20px 24px; }
.ra-info h3 { font-size: 28px; margin-bottom: 12px; line-height: 1.2; }
.ra-info > p:not(.kicker) { color: var(--suave); }
.modelos { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.modelo {
  min-height: 40px; padding: 0 16px; border-radius: var(--pildora);
  border: 1px solid transparent; background: var(--fondo-2); color: var(--texto);
  font: inherit; font-size: 14px; font-weight: 400; cursor: pointer;
}
.modelo[aria-pressed='true'] { border-color: var(--texto); }
.medidas { margin-top: 12px; font-size: 14px; color: var(--texto); font-variant-numeric: tabular-nums; }
.enlace { display: inline-block; margin-top: 12px; color: var(--texto); font-weight: 480; text-decoration: underline; text-underline-offset: 4px; }
.pasos { margin: 18px 0 0; padding: 16px 16px 16px 36px; border-radius: var(--radio); background: var(--fondo-2); color: var(--suave); font-size: 14px; }
.pasos li + li { margin-top: 4px; }

/* Intro con carrusel */
body.con-intro { overflow: hidden; }
.intro {
  position: fixed; inset: 0; z-index: 50; overflow-y: auto; overflow-x: hidden;
  display: flex; flex-direction: column;
  background:
    linear-gradient(180deg, rgba(23, 23, 33, 0.55) 0%, rgba(23, 23, 33, 0.35) 40%, #171721 88%),
    var(--hero-foto, radial-gradient(90% 60% at 50% 25%, #34344a 0%, #22222f 45%, #171721 80%));
  background-color: var(--fondo); background-size: cover; background-position: center;
  transition: opacity 0.35s ease;
}
.intro.saliendo { opacity: 0; }
.intro[hidden] { display: none; }
.intro-banner {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px; text-align: center;
  background: transparent; color: var(--texto);
  font-size: 14px; font-weight: 400; letter-spacing: 0.005em;
}
.intro-ra { padding: 2px 10px; border-radius: var(--pildora); background: var(--fondo-2); color: var(--texto); font-size: 0.8em; }
.carrusel-ayuda { text-align: center; color: var(--suave); font-size: 12px; font-weight: 480; letter-spacing: 0.01em; }
.carrusel { padding: 12px 0 32px; overflow: hidden; }
.carrusel-pista { display: flex; gap: 12px; width: max-content; animation: desfile 70s linear infinite; }
.carrusel:hover .carrusel-pista, .carrusel:active .carrusel-pista { animation-play-state: paused; }
@keyframes desfile { from { transform: translateX(0); } to { transform: translateX(calc(-50% - 6px)); } }
.carrusel-item {
  flex: none; width: 132px; padding: 10px 10px 12px; border-radius: var(--radio);
  border: 0; background: var(--panel); color: var(--texto);
  font: inherit; font-size: 13px; font-weight: 400; cursor: pointer; text-align: center;
}
.carrusel-item img { width: 112px; height: 112px; margin: 0 auto 6px; object-fit: contain; }
.carrusel-item span { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.intro-cuerpo { position: relative; isolation: isolate; flex: 1; display: flex; flex-direction: column; justify-content: center; width: 100%; max-width: 640px; margin: 0 auto; padding: 40px 16px 56px; text-align: center; }
.intro-cuerpo h1 { font-size: clamp(32px, 8.4vw, 65px); font-weight: 480; line-height: 1.1; letter-spacing: 0.01em; color: var(--acento-texto); }
.intro-cuerpo > p:not(.kicker) { color: var(--texto); font-size: 17px; font-weight: 480; line-height: 1.35; margin-top: 16px; }
.intro-cuerpo strong { color: var(--texto); }
.intro-acciones { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 96px; }
.intro-btn { min-height: 52px; padding: 0 24px; }
@media (max-width: 480px) { .intro-btn, .asoma { width: 100%; } }

/* Robot que asoma por detrás del botón y saluda */
.asoma { position: relative; display: flex; isolation: isolate; }
.asoma > .btn { position: relative; z-index: 1; }
.asoma-ventana {
  position: absolute; right: 10px; bottom: calc(100% - 14px); z-index: 0;
  width: 130px; height: 94px; overflow: hidden; pointer-events: none;
}
.asoma-robot {
  position: absolute; left: 0; top: 0; width: 130px; height: 130px;
  transform: translateY(75%); transition: transform 0.45s cubic-bezier(0.5, 0, 0.75, 0);
}
.asoma.saluda .asoma-robot { transform: translateY(-4%); transition: transform 0.6s cubic-bezier(0.25, 1.5, 0.5, 1); }
/* Compañero: robot blanco del lado izquierdo, llega medio segundo después */
.asoma-ventana-izq { right: auto; left: 14px; width: 96px; }
.asoma-robot-2 { top: 14px; left: -31px; width: 164px; height: 92px; transform: translateY(100%); }
.asoma.saluda .asoma-robot-2 { transform: translateY(0); transition-delay: 0.5s; }
@media (prefers-reduced-motion: reduce) {
  .carrusel { overflow-x: auto; }
  .carrusel-pista { animation: none; }
}
@media (min-width: 820px) { .carrusel-item { width: 168px; } .carrusel-item img { width: 148px; height: 148px; } }

/* Plan Socio de Mantenimiento */
.plan {
  display: grid; gap: 24px; padding: 24px 20px;
  border-radius: var(--radio);
  background: var(--panel);
}
.plan-cab .btn { margin-top: 18px; width: 100%; }
.plan-precio { margin-top: 18px; padding: 16px 20px; border-radius: var(--radio); background: var(--fondo); }
.plan-precio span { display: block; font-size: 13px; color: var(--suave); }
.plan-precio strong { font-family: var(--titulos); font-stretch: 112%; font-size: 32px; font-weight: 480; letter-spacing: 0.015em; }
.plan-pasos { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.plan-pasos li { display: flex; gap: 14px; align-items: flex-start; }
.paso-num { flex: none; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--fondo-2); color: var(--texto); font-weight: 480; font-size: 15px; }
.plan-pasos strong { display: block; font-size: 16px; font-weight: 480; }
.plan-pasos p { color: var(--suave); font-size: 14px; }
.plan-sub { margin-top: 32px; }
.incluye { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr)); gap: 12px; }
.item { padding: 32px; border-radius: var(--radio); background: var(--panel); min-width: 0; }
.item-icono { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--fondo-2); color: var(--texto); margin-bottom: 16px; }
.item-icono svg { width: 22px; height: 22px; }
.item h4 { margin: 0 0 8px; font-size: 21px; line-height: 1.35; }
.item p { color: var(--suave); font-size: 14px; }
.condiciones { margin: 18px 0 0; padding: 16px 16px 16px 34px; border-radius: var(--radio); background: var(--fondo-2); color: var(--suave); font-size: 14px; }
.condiciones li + li { margin-top: 4px; }

/* Proyectos */
.proyectos { display: grid; gap: 12px; }
.proyecto { min-width: 0; background: var(--panel); border-radius: var(--radio); padding: 32px; }
.proyecto h3 { font-size: 28px; margin-bottom: 12px; line-height: 1.2; }
.proyecto > p:not(.etiqueta) { color: var(--suave); }
.etiqueta { font-size: 12px; font-weight: 480; color: var(--suave); letter-spacing: 0.01em; margin-bottom: 8px; }
.galeria { display: flex; gap: 10px; overflow-x: auto; margin-top: 16px; scroll-snap-type: x mandatory; scrollbar-width: thin; }
.galeria img { flex: none; width: 150px; height: auto; border-radius: var(--radio); scroll-snap-align: start; }

.chips { list-style: none; padding: 0; margin: 14px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.chips li { padding: 5px 12px; border-radius: var(--pildora); background: var(--fondo-2); font-size: 13px; }
.chips-chicos li { font-size: 12px; padding: 3px 9px; color: var(--suave); }

/* GitHub */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 20px; }
.stat { background: var(--panel); border-radius: var(--radio); padding: 32px 16px; }
.stat strong { display: block; font-family: var(--titulos); font-stretch: 112%; font-size: clamp(24px, 6vw, 32px); font-weight: 480; letter-spacing: 0.015em; }
.stat span { font-size: 13px; color: var(--suave); }
.capturas { display: flex; gap: 12px; overflow-x: auto; margin-bottom: 20px; scroll-snap-type: x mandatory; }
.capturas figure { flex: none; width: min(86vw, 520px); margin: 0; scroll-snap-align: start; }
.capturas img { border-radius: var(--radio); }
.capturas figcaption { font-size: 13px; color: var(--suave); margin-top: 8px; }

.prs { list-style: none; margin: 0; padding: 0; border-radius: var(--radio); overflow: hidden; background: var(--panel); }
.pr { display: flex; gap: 12px; padding: 16px 20px; border-top: 1px solid var(--fondo-2); }
.pr:first-child { border-top: 0; }
.pr-icono {
  flex: none; width: 16px; height: 16px; margin-top: 3px;
  background: var(--texto);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M5.45 5.154A4.25 4.25 0 0 0 9.25 7.5h1.378a2.251 2.251 0 1 1 0 1.5H9.25A5.734 5.734 0 0 1 5 7.123v3.505a2.25 2.25 0 1 1-1.5 0V5.372a2.25 2.25 0 1 1 1.95-.218ZM4.25 13.5a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5Zm8.5-4.5a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5ZM5 3.25a.75.75 0 1 0 0 .005V3.25Z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M5.45 5.154A4.25 4.25 0 0 0 9.25 7.5h1.378a2.251 2.251 0 1 1 0 1.5H9.25A5.734 5.734 0 0 1 5 7.123v3.505a2.25 2.25 0 1 1-1.5 0V5.372a2.25 2.25 0 1 1 1.95-.218ZM4.25 13.5a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5Zm8.5-4.5a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5ZM5 3.25a.75.75 0 1 0 0 .005V3.25Z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.pr-cuerpo { min-width: 0; }
.pr-titulo { font-weight: 480; font-size: 16px; overflow-wrap: anywhere; }
.pr-meta { font-size: 13px; color: var(--suave); margin-top: 4px; }
.merged { display: inline-block; padding: 0 10px; border-radius: var(--pildora); background: var(--fondo-2); color: var(--texto); font-size: 12px; font-weight: 480; }
.mas { color: var(--texto); font-weight: 480; }
.menos { color: var(--suave); font-weight: 480; }

/* Trayectoria */
.dos-col { display: grid; gap: 32px; }
.linea { list-style: none; margin: 0; padding: 0 0 0 20px; border-left: 1px solid var(--borde); }
.linea li { position: relative; padding-bottom: 22px; }
.linea li::before { content: ''; position: absolute; left: -26.5px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--texto); border: 3px solid var(--fondo); }
.linea h3 { font-size: 18px; margin-bottom: 4px; line-height: 1.35; }
.linea li > p:not(.etiqueta) { color: var(--suave); font-size: 15px; }
.lista { margin: 0 0 28px; padding-left: 20px; color: var(--suave); }

/* Contacto */
.contacto { padding-bottom: 72px; }
.contacto h2 { margin-bottom: 32px; }
.contacto-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.contacto-card { display: block; padding: 20px; border-radius: var(--radio); background: var(--panel); border: 1px solid transparent; text-decoration: none; min-width: 0; }
.contacto-card:hover { border-color: var(--borde); }
.contacto-card span { display: block; font-size: 13px; color: var(--suave); }
.contacto-card strong { display: block; font-size: 15px; overflow-wrap: anywhere; }
.contacto-card:first-child { background: var(--acento); color: var(--acento-texto); border-color: var(--acento); }
.contacto-card:first-child span { color: var(--acento-texto); opacity: 0.8; }
.contacto-card:first-child:hover { filter: brightness(1.12); border-color: var(--acento); }

/* Formulario de contacto */
.form-contacto { margin-top: 32px; padding: 32px; border-radius: var(--radio); background: var(--panel); display: grid; gap: 14px; max-width: 720px; }
.form-contacto h3 { font-size: 21px; }
.form-ayuda { color: var(--suave); font-size: 14px; margin-top: -8px; }
.form-fila { display: grid; gap: 14px; }
.form-contacto label { display: grid; gap: 6px; font-size: 14px; color: var(--suave); }
.form-contacto input, .form-contacto select, .form-contacto textarea {
  width: 100%; padding: 14px 20px; border-radius: var(--radio-boton); border: 1px solid var(--borde-claro);
  background: transparent; color: var(--texto); font: inherit; font-size: 16px;
}
.form-contacto textarea { resize: vertical; min-height: 120px; border-radius: 24px; }
.form-contacto ::placeholder { color: var(--suave); }
.form-contacto select option { background: var(--panel); }
.form-contacto input:focus, .form-contacto select:focus, .form-contacto textarea:focus { outline: 2px solid var(--texto); outline-offset: 2px; border-color: var(--texto); }
.form-contacto .btn { justify-self: start; min-width: 200px; }
.form-contacto .btn[disabled] { opacity: 0.6; cursor: wait; }
.form-estado { font-size: 14px; min-height: 1.4em; }
.form-estado.ok { color: var(--texto); }
.form-estado.error { color: var(--texto); font-weight: 480; }
.trampa { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Botón flotante de WhatsApp */
.wa-flotante {
  position: fixed; right: 18px; bottom: calc(18px + env(safe-area-inset-bottom, 0px)); z-index: 40;
  width: 58px; height: 58px; border-radius: 50%; display: grid; place-items: center;
  background: var(--acento); color: var(--acento-texto);
  transition: transform 0.15s ease;
}
.wa-flotante:hover { transform: scale(1.06); }
.wa-flotante svg { width: 32px; height: 32px; }

.pie { padding-top: 32px; padding-bottom: 100px; border-top: 1px solid var(--fondo-2); color: var(--suave); font-size: 12px; font-weight: 480; letter-spacing: 0.01em; }
.pie ul { padding-left: 18px; margin: 6px 0 12px; }
.pie a { color: inherit; }

@media (min-width: 820px) {
  .nav { padding: 12px 32px; }
  .nav-links { justify-content: center; }
  .nav-cta { font-size: 16px; }
  .form-fila { grid-template-columns: 1fr 1fr; }
  .ra-panel { grid-template-columns: 1.4fr 1fr; }
  model-viewer { height: 520px; }
  .ra-info { padding: 40px; align-self: center; }
  .proyectos { grid-template-columns: 1fr 1fr; }
  .proyecto.con-imagenes { grid-column: 1 / -1; }
  .galeria img { width: 200px; }
  .dos-col { grid-template-columns: 1.4fr 1fr; }
  .plan { grid-template-columns: 1.1fr 1fr; padding: 40px; align-items: center; }
  .plan-cab .btn { width: auto; }
}

/* PC: texto a la izquierda, sillón a la derecha */
@media (min-width: 960px) {
  .intro-cuerpo {
    display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    grid-template-rows: auto auto auto auto; align-content: center;
    column-gap: 64px; max-width: 1200px; padding: 32px 40px 48px; text-align: left;
  }
  .intro-cuerpo > :not(.sillon3d) { grid-column: 1; }
  .intro .sillon3d { grid-column: 2; grid-row: 1 / span 4; align-self: center; width: 100%; margin: 0; }
  .intro-cuerpo h1 { font-size: clamp(40px, 4.2vw, 58px); }
  .intro-acciones { justify-content: flex-start; }
  .intro-acciones .asoma .intro-btn { min-width: 320px; }
}

/* Portada: la laptop de fondo no compite con el título */
.hero .laptop { opacity: 0.22; }
.hero .laptop-pantalla img { filter: blur(3px); }