/* =====================================================================
   Latitud 40 · LAYOUT
   Barra de navegación, menú móvil, interruptor de tema, cabecera de
   páginas interiores, banda de cierre y pie.
   ===================================================================== */

/* ---- Barra flotante ---- */
#nav-sentinel { position: absolute; top: 80px; height: 1px; width: 1px; }
.nav {
  position: fixed; top: 16px; left: 50%; transform: translateX(-50%); z-index: 50; isolation: isolate;
  width: min(var(--max), 100% - 2 * var(--gutter)); height: 66px;
  display: flex; align-items: center; justify-content: space-between; padding: 0 10px 0 22px; border-radius: 999px;
  /* con más vidrio, la tinta de la barra se acerca al color de texto de la página para seguir legible */
  --nav-ink: color-mix(in srgb, var(--nav-text) calc(var(--glass-a, 1) * 100%), var(--text));
  --nav-ink-muted: color-mix(in srgb, var(--nav-muted) calc(var(--glass-a, 1) * 100%), var(--muted));
  border: 1px solid var(--nav-line); color: var(--nav-ink);
  backdrop-filter: blur(var(--glass-blur, 26px)) saturate(190%) brightness(1.04); -webkit-backdrop-filter: blur(var(--glass-blur, 26px)) saturate(190%) brightness(1.04);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, calc(var(--sheen) * 1.4)), inset 0 -1px 0 rgba(255, 255, 255, calc(var(--sheen) * .3)), 0 18px 50px -24px rgba(0, 0, 0, .45);
  transition: background .5s var(--ease), border-color .5s var(--ease);
}
/* brillo especular del vidrio, detrás del contenido */
.nav::before { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: -1;
  background: linear-gradient(to bottom, rgba(255, 255, 255, var(--sheen)), rgba(255, 255, 255, 0) 55%, rgba(255, 255, 255, calc(var(--sheen) * .25))); }
/* capa de color del vidrio: su opacidad la controla el deslizador (--glass-a) */
.nav::after { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; z-index: -2; background: var(--nav-bg); opacity: var(--glass-a, 1); transition: background .5s var(--ease), opacity .3s; }
.nav.scrolled::after { background: var(--nav-bg-solid); }
.glass-ctl { display: grid; gap: 8px; padding: 6px 6px 14px; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.glass-ctl label { display: flex; justify-content: space-between; font-size: calc(13px * var(--k-body, 1)); font-weight: 600; color: var(--muted); }
.glass-ctl label span { font-family: var(--mono); font-size: calc(11px * var(--k-body, 1)); color: var(--dim); }
.glass-ctl input[type="range"] { width: 100%; accent-color: var(--accent); }
.logo { display: inline-flex; align-items: center; }
.logo img { height: 26px; width: auto; }
.logo-light { display: var(--logo-light); }
.logo-dark { display: var(--logo-dark); }
.nav .logo-light { display: var(--nav-logo-light); }
.nav .logo-dark { display: var(--nav-logo-dark); }
.nav-links { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-links a { display: block; padding: 9px 14px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--nav-ink-muted); transition: color .3s, background .3s; }
.nav-links a:hover { color: var(--nav-ink); background: var(--accent-soft); }
.nav-links a[aria-current="page"] { color: var(--nav-ink); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 8px; }

.theme-btn { width: 44px; height: 44px; border-radius: 999px; border: 1px solid var(--nav-line); background: transparent; cursor: pointer; display: grid; place-items: center; color: var(--nav-ink-muted); transition: color .3s, border-color .3s, transform .5s var(--ease); }
.theme-btn:hover, .theme-btn[aria-expanded="true"] { color: var(--nav-ink); border-color: var(--nav-ink); }
.theme-btn:active { transform: scale(.94); }
.theme-btn .ic-svg { width: 18px; height: 18px; }
.theme-btn .ic-sun { display: var(--logo-dark); }   /* en oscuro se ofrece el sol */
.theme-btn .ic-moon { display: var(--logo-light); } /* en claro se ofrece la luna */
.theme-btn.aa { font-family: var(--font-display); font-weight: 800; font-size: 15px; letter-spacing: -.02em; }

/* ---- Selectores de paleta y tipografía (herramienta de revisión) ---- */
.picker { isolation: isolate; position: fixed; top: 92px; right: max(var(--gutter), calc((100% - var(--max)) / 2)); z-index: 55; width: min(760px, 100% - 2 * var(--gutter)); max-height: min(72vh, 760px); overflow: auto;
  background: var(--glass-solid); border: 1px solid var(--line2); border-radius: var(--r); padding: 16px; box-shadow: var(--shadow), var(--inset-hi);
  backdrop-filter: blur(28px) saturate(180%); -webkit-backdrop-filter: blur(28px) saturate(180%); color: var(--text);
  opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .35s var(--ease), transform .45s var(--ease), visibility .35s; }
.picker.open { opacity: 1; visibility: visible; transform: none; }
.picker-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 4px 6px 14px; }
.picker-head b { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--dim); font-weight: 600; }
.picker-head button { font: inherit; font-size: 12px; font-weight: 600; color: var(--accent-2); background: transparent; border: 0; cursor: pointer; }
.picker-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.swatch { text-align: left; background: var(--surf); border: 1px solid var(--line); border-radius: var(--r-in); padding: 10px; cursor: pointer; display: grid; gap: 8px; color: var(--text); transition: border-color .3s, transform .5s var(--ease); }
.swatch:hover { border-color: var(--text); transform: translateY(-2px); }
.swatch[aria-pressed="true"] { border-color: var(--accent-2); box-shadow: 0 0 0 2px var(--accent-soft); }
.swatch b { font-size: 14px; font-weight: 600; }
.swatch small { font-size: 12px; color: var(--muted); line-height: 1.35; }
/* miniatura de página: barra / cuerpo con acento / banda / pie, versión clara y oscura */
.sw-prev { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.mini { height: 64px; border-radius: 8px; overflow: hidden; display: grid; grid-template-rows: 12px 1fr 12px 10px; border: 1px solid rgba(0, 0, 0, .12); }
.mini i { display: block; }
.mini .m-nav { background: var(--p-nav); }
.mini .m-body { background: var(--p-bg); position: relative; }
.mini .m-body::before { content: ""; position: absolute; left: 8px; top: 8px; width: 34%; height: 5px; border-radius: 3px; background: var(--p-text); opacity: .85; }
.mini .m-body::after { content: ""; position: absolute; left: 8px; bottom: 6px; width: 16px; height: 7px; border-radius: 4px; background: var(--p-accent); }
.mini .m-band { background: var(--p-band); }
.mini .m-foot { background: var(--p-foot); }
/* muestra tipográfica */
.fsw .fsw-d { font-size: 26px; line-height: 1; letter-spacing: -.02em; }
.fsw .fsw-b { font-size: 13px; color: var(--muted); }
@media (max-width: 900px) { .picker { top: 88px; left: var(--gutter); right: var(--gutter); width: auto; } .picker-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .picker-grid { grid-template-columns: 1fr; } }

.burger { display: none; width: 46px; height: 46px; border-radius: 999px; border: 1px solid var(--nav-line); background: transparent; position: relative; cursor: pointer; }
.burger span { position: absolute; left: 14px; right: 14px; height: 2px; background: var(--nav-ink); border-radius: 2px; transition: transform .5s var(--ease), top .5s var(--ease); }
.burger span:nth-child(1) { top: 17px } .burger span:nth-child(2) { top: 27px }
.menu-open .burger span:nth-child(1) { top: 22px; transform: rotate(45deg); }
.menu-open .burger span:nth-child(2) { top: 22px; transform: rotate(-45deg); }

/* ---- Menú móvil a pantalla completa ---- */
.menu {
  position: fixed; inset: 0; z-index: 40; background: var(--glass-solid);
  backdrop-filter: blur(28px); -webkit-backdrop-filter: blur(28px);
  display: flex; flex-direction: column; justify-content: center; padding: 0 var(--gutter);
  opacity: 0; visibility: hidden; transition: opacity .5s var(--ease), visibility .5s;
}
.menu-open .menu { opacity: 1; visibility: visible; }
.menu-open { overflow: hidden; }
.menu > a {
  font-family: var(--font-display); font-variation-settings: "wdth" var(--display-wdth); font-weight: var(--display-wght); text-transform: var(--display-tt); font-size: clamp(2.4rem, 11vw, 4.4rem); line-height: 1; padding: 8px 0;
  transform: translateY(36px); opacity: 0; transition: transform .7s var(--ease), opacity .6s var(--ease);
}
.menu > a[aria-current="page"] { color: var(--accent-2); }
.menu-open .menu > a { transform: none; opacity: 1; }
.menu > a:nth-child(1) { transition-delay: .08s } .menu > a:nth-child(2) { transition-delay: .13s } .menu > a:nth-child(3) { transition-delay: .18s }
.menu > a:nth-child(4) { transition-delay: .23s } .menu > a:nth-child(5) { transition-delay: .28s } .menu > a:nth-child(6) { transition-delay: .33s }
.menu .menu-cta { margin-top: 28px; transform: translateY(36px); opacity: 0; transition: transform .7s var(--ease) .4s, opacity .6s var(--ease) .4s; }
.menu-open .menu .menu-cta { transform: none; opacity: 1; }

/* ---- Cabecera de página interior ---- */
.page-hero { padding: 150px 0 clamp(48px, 6vw, 88px); }
.page-hero .wrap { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: end; }
.page-hero.has-img .wrap { grid-template-columns: 7fr 5fr; }
.page-hero h1 { font-size: var(--fs-hero); max-width: 14ch; overflow-wrap: anywhere; }
.page-servicios .page-hero.has-img:not(.con-pase) h1 { font-size: clamp(2.2rem, 5vw, 5.4rem); max-width: none; } /* títulos de servicio largos (impermeabilización) */

/* Logo en el aire superior de cada cabecera. El hueco hasta el texto es FIJO e igual
   en todas las páginas: antes las que llevaban foto usaban margin-bottom:auto y el
   texto caía al fondo de la columna, así que el hueco dependía de cuánto texto tuviera
   cada página (0 px en Nosotros, 161 px en Servicios). */
.hero-mark { width: clamp(300px, 34vw, 520px); margin-left: -2%; margin-bottom: clamp(28px, 4vh, 56px); }
.hero-mark img { width: 100%; height: auto; }
.hero-mark .logo-light { display: var(--logo-light); } .hero-mark .logo-dark { display: var(--logo-dark); }
.page-hero.has-img .page-hero-copy { display: flex; flex-direction: column; align-self: stretch; }
.page-hero.has-img .page-hero-copy > *:not(.hero-mark) { flex: none; }
.page-hero .lead { margin-top: 26px; max-width: 52ch; }
.page-hero-visual { margin: 0; }
.page-hero-visual .ph { aspect-ratio: 4 / 5; background: var(--surf); }
.page-hero-visual .ph img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
.page-hero-visual figcaption { margin-top: 14px; font-size: calc(13px * var(--k-body, 1)); color: var(--dim); padding-left: 6px; }

/* ---- Banda de cierre ---- */
.cta-band { padding: var(--sec) 0; background: var(--cta-bg); color: var(--cta-text); border-top: 1px solid var(--line); }
.cta-band-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 40px; align-items: center; }
.cta-band .lead { margin-top: 20px; color: var(--cta-muted); }
.cta-band .btn-ghost { color: var(--cta-text); border-color: var(--cta-line); background: transparent; }
.cta-band .btn-ghost:hover { border-color: var(--cta-text); }
.cta-band-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: flex-end; }

/* ---- Pie ---- */
.footer { border-top: 1px solid var(--footer-line); padding: 56px 0 40px; background: var(--footer-bg); color: var(--footer-text); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.4fr; gap: 40px; align-items: start; }
.footer .logo img { height: 44px; }
.footer .logo-light { display: var(--footer-logo-light); } .footer .logo-dark { display: var(--footer-logo-dark); }
.footer-giro { margin-top: 18px; max-width: 38ch; color: var(--footer-muted); font-size: calc(14.5px * var(--k-body, 1)); }
.footer .cols h4 { margin: 0 0 14px; font-size: calc(12px * var(--k-body, 1)); letter-spacing: .14em; text-transform: uppercase; color: var(--footer-dim); font-weight: 600; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer li { font-size: calc(14.5px * var(--k-body, 1)); color: var(--footer-muted); }
.footer li a:hover { color: var(--footer-text); }
.footer-copy { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--footer-line); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; font-size: calc(13px * var(--k-body, 1)); color: var(--footer-dim); }

/* ---- Responsive ---- */
@media (max-width: 1060px) {
  .nav-links { display: none; } .burger { display: block; } .nav .cta-nav { display: none; }
}
@media (max-width: 900px) {
  .page-hero { padding-top: 120px; }
  .page-hero.has-img .wrap { grid-template-columns: 1fr; }
  .page-hero-visual { max-width: 440px; }
  .hero-mark { width: min(300px, 80vw); margin-left: 0; margin-bottom: 40px; }
  .cta-band-grid { grid-template-columns: 1fr; }
  .cta-band-actions { justify-content: flex-start; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}