/* ============================================================
   DANGOFE OS LIQUID V2 — liquid-glass.css (Fase 1B.1)
   Sistema Liquid Glass reutilizable (3 niveles), estilo iOS:
   más transparente, más fondo visible, bordes finos luminosos,
   reflejo interior, gradiente interno, grano anti-banding.

   Opacidades por tema (dentro de los rangos de referencia):
     Oscuro : soft .18 · normal .30 · strong .44  (blur 20/24/30, sat 150/160/170)
     Claro  : soft .20 · normal .27 · strong .42  (blur 24/30/36, sat 140/155/165)

   Variables configurables (core.css, ajustables desde JS):
     --glass-opacity-mul  multiplicador global de opacidad (1 = neutro)
     --glass-blur-mul     multiplicador global de blur     (1 = neutro)
     --glass-boost        refuerzo aditivo de opacidad cuando el fondo
                          es muy brillante (protección de legibilidad)
   ============================================================ */

/* ------------------------------------------------------------
   Variables de intensidad SEPARADAS (Fase 2A.2)
   Cada fuente de brillo se controla por separado para evitar la
   acumulación de resplandores difusos (halos/bloom):
     --fx-glow-intensity        resplandor del efecto 3D (shader)
     --glass-glow-intensity     resplandor propio del vidrio
     --ambient-light-intensity  iluminación ambiental difusa (0 = sin
                                manchas). La fija JS (settings.js) desde
                                el slider «Iluminación ambiental» (0-100%).
     --glass-reflection-intensity  reflejo especular del vidrio
   ------------------------------------------------------------ */
:root {
  --fx-glow-intensity: 0.3;
  --glass-glow-intensity: 0.2;
  --fx-local-glow-intensity: 0.25;      /* resplandor local del efecto 3D */
  --ambient-light-intensity: 0.0;       /* iluminación ambiental — DEFAULT 0 */
  --glass-outer-glow-intensity: 0.0;    /* resplandor exterior del vidrio — DEFAULT 0 */
  --glass-reflection-intensity: 0.25;   /* reflejo interior del vidrio */
}

/* Opacidades y blur por nivel (tema oscuro por defecto) */
:root,
[data-theme='dark'] {
  --glass-a-soft: 0.18;
  --glass-a-normal: 0.3;
  --glass-a-strong: 0.44;
  --glass-blur-soft: 20px;
  --glass-blur-normal: 24px;
  --glass-blur-strong: 30px;
  --glass-sat-soft: 150%;
  --glass-sat-normal: 160%;
  --glass-sat-strong: 170%;
  --glass-inner-hi: rgba(255, 255, 255, 0.07);
  --glass-grain-a: 0.028;
}

/* Tamaños de sombra por nivel (oscuro conserva la profundidad original) */
:root,
[data-theme='dark'] {
  --glass-shadow-y-soft: 8px;    --glass-shadow-b-soft: 24px;
  --glass-shadow-y-normal: 12px; --glass-shadow-b-normal: 34px;
  --glass-shadow-y-strong: 16px; --glass-shadow-b-strong: 44px;
}

[data-theme='light'] {
  --glass-a-soft: 0.22;
  --glass-a-normal: 0.42;
  --glass-a-strong: 0.52;
  --glass-blur-soft: 18px;
  --glass-blur-normal: 18px;
  --glass-blur-strong: 24px;
  --glass-sat-soft: 140%;
  --glass-sat-normal: 150%;
  --glass-sat-strong: 160%;
  --glass-inner-hi: rgba(255, 255, 255, 0.45);
  --glass-grain-a: 0.02;
  /* Fase 3C.1 — el vidrio se distingue por transparencia + blur +
     borde + reflejo. La sombra exterior es MÍNIMA (solo asienta la
     pieza; nada de nubes grises). Controlable con --glass-shadow-pct. */
  --glass-shadow-y-soft: 2px;   --glass-shadow-b-soft: 8px;
  --glass-shadow-y-normal: 3px; --glass-shadow-b-normal: 10px;
  --glass-shadow-y-strong: 4px; --glass-shadow-b-strong: 14px;
}

/* ------------------------------------------------------------
   Base común a todos los niveles
   ------------------------------------------------------------ */
.glass-soft,
.glass-normal,
.glass-strong {
  position: relative;
  border-radius: var(--radius-card);
  border: 1px solid
    color-mix(in srgb, var(--glass-border) var(--glass-border-pct, 100%), transparent);
  /* Borde superior más luminoso: canto de vidrio iOS */
  border-top-color: color-mix(
    in srgb, var(--glass-border-top) var(--glass-border-pct, 100%), transparent
  );
  overflow: hidden;
  transition: background var(--t-med), border-color var(--t-med),
    box-shadow var(--t-med), transform var(--t-fast);
}

/* Reflejo interior superior + gradiente interno de profundidad */
.glass-soft::before,
.glass-normal::before,
.glass-strong::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--glass-reflection),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, transparent 40%, rgba(0, 0, 0, 0.04) 100%);
  border-radius: inherit;
  pointer-events: none;
  z-index: 0;
  opacity: var(--glass-reflect-op, 1);
}

/* Grano ligero anti-banding (ruido SVG diminuto, sin CDN) */
.glass-soft::after,
.glass-normal::after,
.glass-strong::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 0;
  opacity: calc(var(--glass-grain-a) * var(--glass-grain-mul, 1));
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 120px 120px;
  mix-blend-mode: overlay;
}

/* El contenido siempre por encima del reflejo y del grano */
.glass-soft > *,
.glass-normal > *,
.glass-strong > * {
  position: relative;
  z-index: 1;
}

/* ------------------------------------------------------------
   Nivel suave — muy transparente, deja pasar el fondo
   ------------------------------------------------------------ */
.glass-soft {
  background: rgba(
    var(--glass-rgb),
    calc(var(--glass-a-soft) * var(--glass-opacity-mul) + var(--glass-boost))
  );
  -webkit-backdrop-filter: blur(calc(var(--glass-blur-soft) * var(--glass-blur-mul)))
    saturate(calc(var(--glass-sat-soft) * var(--glass-sat-mul, 1)));
  backdrop-filter: blur(calc(var(--glass-blur-soft) * var(--glass-blur-mul)))
    saturate(calc(var(--glass-sat-soft) * var(--glass-sat-mul, 1)));
  box-shadow: 0 var(--glass-shadow-y-soft) var(--glass-shadow-b-soft) color-mix(in srgb, var(--glass-shadow) var(--glass-shadow-pct, 100%), transparent),
    inset 0 1px 0 var(--glass-inner-hi);
}

/* ------------------------------------------------------------
   Nivel normal — tarjetas estándar
   ------------------------------------------------------------ */
.glass-normal {
  background: rgba(
    var(--glass-rgb),
    calc(var(--glass-a-normal) * var(--glass-opacity-mul) + var(--glass-boost))
  );
  -webkit-backdrop-filter: blur(calc(var(--glass-blur-normal) * var(--glass-blur-mul)))
    saturate(calc(var(--glass-sat-normal) * var(--glass-sat-mul, 1)));
  backdrop-filter: blur(calc(var(--glass-blur-normal) * var(--glass-blur-mul)))
    saturate(calc(var(--glass-sat-normal) * var(--glass-sat-mul, 1)));
  box-shadow: 0 var(--glass-shadow-y-normal) var(--glass-shadow-b-normal) color-mix(in srgb, var(--glass-shadow) var(--glass-shadow-pct, 100%), transparent),
    inset 0 1px 0 var(--glass-inner-hi);
}

/* ------------------------------------------------------------
   Nivel fuerte — solo donde la lectura lo exige
   ------------------------------------------------------------ */
.glass-strong {
  background: rgba(
    var(--glass-rgb),
    calc(var(--glass-a-strong) * var(--glass-opacity-mul) + var(--glass-boost))
  );
  -webkit-backdrop-filter: blur(calc(var(--glass-blur-strong) * var(--glass-blur-mul)))
    saturate(calc(var(--glass-sat-strong) * var(--glass-sat-mul, 1)));
  backdrop-filter: blur(calc(var(--glass-blur-strong) * var(--glass-blur-mul)))
    saturate(calc(var(--glass-sat-strong) * var(--glass-sat-mul, 1)));
  box-shadow: 0 var(--glass-shadow-y-strong) var(--glass-shadow-b-strong) color-mix(in srgb, var(--glass-shadow) var(--glass-shadow-pct, 100%), transparent),
    inset 0 1px 0 var(--glass-inner-hi);
}

/* ------------------------------------------------------------
   Variante interactiva (hover sutil, para tarjetas)
   Glow acorde a la paleta adaptable, no naranja fijo.
   ------------------------------------------------------------ */
.glass-hover:hover {
  border-color: var(--border-strong);
  box-shadow: 0 var(--glass-shadow-y-strong) var(--glass-shadow-b-strong) color-mix(in srgb, var(--glass-shadow) var(--glass-shadow-pct, 100%), transparent),
    inset 0 1px 0 var(--glass-inner-hi);
  transform: translateY(-2px);
}

/* ------------------------------------------------------------
   Fallback: navegadores sin backdrop-filter
   ------------------------------------------------------------ */
@supports not (backdrop-filter: blur(1px)) {
  .glass-soft {
    background: rgba(var(--glass-rgb), 0.78);
  }
  .glass-normal {
    background: rgba(var(--glass-rgb), 0.86);
  }
  .glass-strong {
    background: rgba(var(--glass-rgb), 0.93);
  }
}