/* ============================================================================
   Frame Performance Analyzer — sistema de material del sitio.

   Traducción a CSS de la composición visual de la aplicación de escritorio.
   Fuente de verdad (StreckerUK/Frame-Performance-Analyzer-Legacy):

     Themes/Colors.xaml            -> los tokens de color
     Visuals/DynamicBackdrop.cs    -> las cuatro capas del fondo
     Visuals/NebulaField.cs        -> el campo de partículas (site-effects.js)
     Effects/LiquidGlass.fx        -> los principios del material
     Effects/LiquidGlassParameters.cs -> las proporciones del material
     Themes/Panels.xaml            -> CardStyle / SegmentedTrackStyle

   Este archivo va PRIMERO: es la capa de sistema (tokens + material + fondo).
   El CSS de cada página sólo aporta maquetación.

   Jerarquía:  BACKDROP (campo + partículas + wash + grain)
             -> SCRIM     (.fpa-scrim  / .fpa-block / .fpa-reading)
             -> ISLAND    (.fpa-island / .pill / .nav-cta)
             -> GLASS     (.fpa-glass / .btn)
   ========================================================================== */

:root {
  color-scheme: dark;

  /* --- Superficies base ------------------------------------------------
     Colors.xaml: WindowBrush #000000, CardBrush #0E110E, PanelAltBrush #161B16 */
  --bg: #000000;
  --panel: #0e110e;
  --panel-2: #161b16;

  /* --- Líneas: CardBorderBrush #394237, DividerBrush #2A302A */
  --line: #394237;
  --line-soft: #2a302a;

  /* --- Tipo: TextBrush, TextSoftBrush, MutedBrush, DisabledBrush */
  --text: #ffffff;
  --text-soft: #d8dcd5;
  --muted: #a9b0a6;
  --muted-2: #737b71;

  /* --- Acento: AccentBrush, AccentHoverBrush, AccentPressedBrush, AccentDimBrush */
  --green: #76b900;
  --green-bright: #8fd119;
  --green-pressed: #5f9600;
  --green-dim: #1b2e0c;

  /* --- Geometría: Panels.xaml CardStyle CornerRadius = 12 */
  --radius: 12px;
  --radius-pill: 999px;
  --max: 1240px;

  /* --- Material: Colors.xaml ------------------------------------------
     SurfaceScrimBrush #99070C08  -> rgb(7,12,8) al 60 %
     IslandBrush        #14FFFFFF -> blanco al 7.8 %
     GlassWellBrush     #2E000000 -> negro al 18 % */
  --glass-scrim: rgba(7, 12, 8, .60);
  --glass-bar: rgba(7, 12, 8, .46);
  --glass-island: rgba(255, 255, 255, .078);
  --glass-well: rgba(0, 0, 0, .18);

  /* GlassEdgeBrush #FFFFFFFF -> #A6FFFFFF -> #59FFFFFF: borde claro con
     transición vertical. Se conserva la RELACIÓN del recurso (1 : .65 : .35)
     y se escala el peso, porque el vidrio de la app vive sobre una ventana
     oscura pero con más luz ambiental que esta página. */
  --glass-edge-top: rgba(255, 255, 255, .20);
  --glass-edge-mid: rgba(255, 255, 255, .13);
  --glass-edge-low: rgba(255, 255, 255, .07);

  /* LiquidGlassParameters: HighlightGain 0.110, HairlineDarkness 0.043 */
  --glass-highlight: .11;
  --glass-hairline: rgba(0, 0, 0, .04);

  /* Blur. El shader muestrea 3 taps a +-BlurPx con BlurPx = 0.465 x alto del
     elemento; una gaussiana CSS con esa misma desviación sería mucho más
     agresiva, así que se usa aproximadamente un tercio de ese radio. */
  --blur-panel: 14px;
  --blur-bar: 24px;
  --blur-control: 18px;

  /* --- Backdrop: DynamicBackdrop.cs + Colors.xaml ---------------------- */
  --backdrop-field: #0d2a13;      /* BackdropFieldBrush */
  --backdrop-particle: #76b900;   /* BackdropParticleColor */
  --backdrop-wash-a: #bff230;     /* BackdropWashBrush stop 0.015 */
  --backdrop-wash-b: #7cd7fe;     /* BackdropWashBrush stop 1     */
  --backdrop-wash-opacity: .15;   /* DynamicBackdrop.WashOpacity  */
  --backdrop-wash-height: 500px;  /* DynamicBackdrop.WashHeight   */
  --backdrop-grain-opacity: .05;  /* DynamicBackdrop: Grain Opacity = 0.05 */

  /* Grano: ruido SVG con semilla (feTurbulence seed = 20260914, la misma del
     Random de DynamicBackdrop/BuildGrain), en tesela de 128 px como la app.
     Se rasteriza una vez y se repite: no hay imagen que descargar. */
  --backdrop-grain-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='128' height='128'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.86' numOctaves='1' seed='20260914' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='128' height='128' filter='url(%23g)'/%3E%3C/svg%3E");
}

/* ===========================================================================
   BACKDROP — DynamicBackdrop.cs: campo, partículas, wash, grano.
   El canvas lo anima site-effects.js; sin JS siguen quedando campo, wash y
   grano, así que el fondo nunca queda vacío.
   ========================================================================= */

.fpa-backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background-color: var(--backdrop-field);
}

/* Capa 1 (partículas): el canvas, llenando el backdrop. Nunca recibe el puntero. */
.fpa-backdrop__particles {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Capa 3 (wash): gradiente lima->cielo, 15 % de opacidad, bajo una máscara
   elíptica. WPF: LinearGradientBrush de (0.007,0.585) a (0.993,0.415)
   = 80deg en CSS; RadialGradientBrush con Center 0.5,0 y radio 0.75 x 0.6
   sobre una banda de 500 px = 75% x 300px desde el borde superior. */
.fpa-backdrop::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: var(--backdrop-wash-height);
  opacity: var(--backdrop-wash-opacity);
  pointer-events: none;
  background-image: linear-gradient(80deg, var(--backdrop-wash-a) 1.5%, var(--backdrop-wash-b) 100%);
  -webkit-mask-image: radial-gradient(ellipse 75% 300px at 50% 0%, #000 0%, #000 30%, transparent 70%);
  mask-image: radial-gradient(ellipse 75% 300px at 50% 0%, #000 0%, #000 30%, transparent 70%);
}

/* Capa 4 (grano): la última, como en DynamicBackdrop. */
.fpa-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: var(--backdrop-grain-opacity);
  pointer-events: none;
  background-image: var(--backdrop-grain-image);
  background-repeat: repeat;
  background-size: 128px 128px;
}

/* El contenido va por encima del backdrop. `.fpa-backdrop` es z-index 0 y
   posicionado, así que el flujo normal necesita ser posicionado también.
   :where() deja la especificidad en 1, para NO pisar el `position: sticky`
   del header, que la declara cada página con especificidad 10. */
body > :where(*:not(.fpa-backdrop)) {
  position: relative;
  z-index: 1;
}

/* ===========================================================================
   SUPERFICIES
   CardStyle (Panels.xaml) es literalmente SurfaceScrimBrush + GlassRimBrush
   + borde de 1 px + radio 12: eso es, exactamente, .fpa-scrim.
   ========================================================================= */

.fpa-scrim,
.fpa-block,
.fpa-reading {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--glass-scrim);
}

/* Panel de lectura: privacy y license piden MÁS scrim que la landing. */
.fpa-reading {
  background-color: rgba(7, 12, 8, .82);
  padding: 34px 36px 30px;
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  backdrop-filter: blur(10px) saturate(120%);
}

/* Bloque de support: un poco más de material visible, sin perder claridad. */
.fpa-block { background-color: rgba(7, 12, 8, .62); padding: 24px 26px; }
.fpa-block + .fpa-block { margin-top: 16px; }
.fpa-block > h2:first-child { margin-top: 0; }
.fpa-block > :last-child { margin-bottom: 0; }

/* IslandBrush: grupos deliberados y controles segmentados. */
.fpa-island {
  background-color: var(--glass-island);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: var(--radius-pill);
}

/* ---------------------------------------------------------------------------
   GLASS — el material. LiquidGlass.fx no tiene color propio: decide dónde
   MIRA cada píxel y todo lo que llega es la escena de detrás. En CSS eso es
   backdrop-filter (el fondo sigue siendo perceptible), el borde como gradiente
   (GlassEdgeBrush = espesor, no outline), la banda interior (HighlightGain)
   y el pelo oscuro del límite (HairlineDarkness).
   ------------------------------------------------------------------------- */

.fpa-glass {
  position: relative;
  border: 1px solid transparent;
  border-radius: var(--radius);
  /* capa 1: el cuerpo del material, recortado al padding-box
     capa 2: el borde, recortado al border-box (GlassEdgeBrush) */
  background-image:
    linear-gradient(var(--glass-scrim), var(--glass-scrim)),
    linear-gradient(180deg,
      var(--glass-edge-top) 0%,
      var(--glass-edge-mid) 50%,
      var(--glass-edge-low) 100%);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  -webkit-backdrop-filter: blur(var(--blur-panel)) saturate(140%);
  backdrop-filter: blur(var(--blur-panel)) saturate(140%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, var(--glass-highlight)),
    0 1px 2px rgba(0, 0, 0, .34),
    0 10px 28px rgba(0, 0, 0, .26);
}

/* El pelo oscuro del límite, justo dentro del borde, y un descenso suave de
   luz hacia el interior: el material tiene grosor, no es una lámina. */
.fpa-glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow:
    inset 0 0 0 1px var(--glass-hairline),
    inset 0 20px 34px -30px rgba(255, 255, 255, .10);
}

.fpa-glass > * { position: relative; }

/* Variante con acento: AccentDimBrush #1B2E0C como TINTE del cuerpo, no como
   relleno. El verde expresa énfasis; no sustituye al material. */
.fpa-glass--accent {
  background-image:
    linear-gradient(rgba(27, 46, 12, .34), rgba(7, 12, 8, .62)),
    linear-gradient(180deg,
      rgba(143, 209, 25, .26) 0%,
      rgba(118, 185, 0, .14) 50%,
      rgba(118, 185, 0, .07) 100%);
}

/* ===========================================================================
   CONTROLES — Botones.xaml: una isla (track) con una burbuja de vidrio dentro.
   La app NO lleva el material a un verde sólido: la burbuja es el acento y su
   opacidad pasa de reposo a 1 al pasar el puntero (materialización, no escala).
   ========================================================================= */

.btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 19px;
  border: 1px solid transparent;
  border-radius: 11px;
  overflow: hidden;
  font-weight: 800;
  font-size: 15px;
  text-decoration: none;
  background-image:
    linear-gradient(var(--glass-scrim), var(--glass-scrim)),
    linear-gradient(180deg,
      var(--glass-edge-top) 0%,
      var(--glass-edge-mid) 50%,
      var(--glass-edge-low) 100%);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  -webkit-backdrop-filter: blur(var(--blur-control)) saturate(150%);
  backdrop-filter: blur(var(--blur-control)) saturate(150%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, var(--glass-highlight)),
    0 1px 2px rgba(0, 0, 0, .34),
    0 8px 20px rgba(0, 0, 0, .24);
  transition: box-shadow .19s ease, color .19s ease, background-color .19s ease;
}

/* La burbuja: el acento del material. */
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  pointer-events: none;
  background-image: radial-gradient(130% 170% at 50% 118%,
    rgba(118, 185, 0, .62) 0%,
    rgba(118, 185, 0, .24) 58%,
    rgba(118, 185, 0, 0) 100%);
  opacity: 0;
  transition: opacity .19s ease;
}

.btn.primary {
  color: #101410;                            /* DropletTextBrush */
  background-image:
    linear-gradient(rgba(11, 17, 12, .70), rgba(11, 17, 12, .70)),
    linear-gradient(180deg,
      rgba(255, 255, 255, .28) 0%,
      rgba(255, 255, 255, .18) 50%,
      rgba(255, 255, 255, .09) 100%);
}
.btn.primary::after { opacity: .78; }
.btn.primary:hover::after { opacity: 1; }

.btn.secondary { color: var(--text-soft); }
.btn.secondary:hover { color: var(--text); }
.btn.secondary:hover::after { opacity: .30; }

/* Hover / active: sube la luz, crece el borde y se hunde la sombra.
   Sin transform: scale() y sin cambiar el verde por uno más claro. */
.btn:hover {
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .17),
    inset 0 0 0 1px rgba(255, 255, 255, var(--glass-hairline)),
    0 2px 4px rgba(0, 0, 0, .38),
    0 14px 32px rgba(0, 0, 0, .32);
}
.btn:active {
  box-shadow:
    inset 0 2px 6px rgba(0, 0, 0, .30),
    inset 0 1px 0 rgba(255, 255, 255, .10),
    0 1px 2px rgba(0, 0, 0, .30);
  transition-duration: .13s;               /* PressMilliseconds */
}

/* Lens: el punto de luz que sigue al puntero. Lo mueve site-effects.js con
   --lens-x / --lens-y; sin JS queda un brillo fijo centrado arriba. */
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  background-image: radial-gradient(180px 120px at var(--lens-x, 50%) var(--lens-y, 18%),
    rgba(255, 255, 255, .22),
    rgba(255, 255, 255, 0) 70%);
  transition: opacity .19s ease;
}
.btn:hover::before { opacity: 1; }

/* --- Isla segmentada: el CTA del header (SegmentedTrackStyle) ------------- */
.nav-cta {
  padding: 10px 15px;
  border: 1px solid rgba(118, 185, 0, .34);
  border-radius: var(--radius-pill);
  color: #d8f2a8 !important;
  background-color: var(--glass-island);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12);
  transition: background-color .19s ease, border-color .19s ease, box-shadow .19s ease;
}
.nav-cta:hover {
  border-color: rgba(143, 209, 25, .58);
  background-color: rgba(118, 185, 0, .16);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .18),
    0 6px 16px rgba(0, 0, 0, .28);
}

/* --- Píldoras informativas: islas de la app --------------------------------- */
.pill {
  border: 1px solid rgba(255, 255, 255, .07);
  background-color: var(--glass-island);
  color: var(--muted);
  border-radius: var(--radius-pill);
  padding: 7px 11px;
  font-size: 12px;
}

/* ===========================================================================
   HEADER — la mejor demostración del material: el campo de partículas pasa
   por detrás y el blur lo disuelve en tiempo real.
   ========================================================================= */

.nav-wrap {
  background-color: var(--glass-bar);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  -webkit-backdrop-filter: blur(var(--blur-bar)) saturate(150%);
  backdrop-filter: blur(var(--blur-bar)) saturate(150%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .06),
    0 10px 30px rgba(0, 0, 0, .30);
}

/* ===========================================================================
   FOCO — visible siempre, con el acento de la app.
   ========================================================================= */

a:focus-visible,
.btn:focus-visible,
.nav-cta:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--green-bright);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ===========================================================================
   RESPONSIVE — menos blur donde es caro, más scrim donde hace falta leer.
   ========================================================================= */

@media (max-width: 900px) {
  :root {
    --blur-panel: 10px;
    --blur-bar: 18px;
    --blur-control: 14px;
  }
}

@media (max-width: 640px) {
  :root {
    --blur-panel: 0px;
    --blur-bar: 14px;
    --blur-control: 12px;
    --glass-scrim: rgba(7, 12, 8, .82);
  }
  .fpa-glass { -webkit-backdrop-filter: none; backdrop-filter: none; }
  .fpa-reading { padding: 24px 20px 22px; }
  .fpa-block { padding: 20px 18px; }
  .fpa-backdrop::before { height: 320px; }
}

/* ===========================================================================
   MOVIMIENTO REDUCIDO — el campo queda colocado y quieto (es el modo
   Motion.Off de NebulaField), y las transiciones decorativas desaparecen.
   ========================================================================= */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* ===========================================================================
   FALLBACK — sin backdrop-filter no hay vidrio: superficies oscuras y
   suficientemente opacas para que nada quede ilegible.
   ========================================================================= */

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  :root {
    --glass-scrim: rgba(7, 12, 8, .94);
    --glass-bar: rgba(7, 12, 8, .96);
    --glass-island: rgba(255, 255, 255, .10);
  }
  .fpa-glass,
  .btn,
  .fpa-scrim,
  .fpa-block,
  .fpa-reading,
  .nav-wrap {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}