/* ============================================================
   FixRiver — Radii, borders, shadows & glow effects
   Dark UI: depth comes from luminous glows, not drop shadows.
   ============================================================ */

:root {
  /* ---- Corner radii ---- */
  --radius-xs: 6px;
  --radius-sm: 10px;    /* buttons, inputs, FAQ rows */
  --radius-md: 14px;    /* badges, small cards */
  --radius-lg: 20px;    /* primary cards */
  --radius-xl: 28px;    /* feature panels, media frames */
  --radius-pill: 999px;

  /* ---- Border widths ---- */
  --border-hairline: 1px;
  --border-thick: 1.5px;

  /* ---- Elevation shadows (subtle on dark) ---- */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);

  /* ---- Glows: signature FixRiver luminosity ---- */
  --glow-aqua: 0 0 0 1px rgba(45, 226, 192, 0.30), 0 10px 36px rgba(45, 226, 192, 0.28);
  --glow-green: 0 0 0 1px rgba(40, 224, 110, 0.30), 0 10px 36px rgba(40, 224, 110, 0.28);
  --glow-iris: 0 0 0 1px rgba(167, 139, 250, 0.32), 0 10px 36px rgba(167, 139, 250, 0.30);
  --glow-text: 0 0 18px rgba(45, 226, 192, 0.35);

  /* Card edge — faint inner top-light + hairline */
  --edge-card: inset 0 1px 0 rgba(255, 255, 255, 0.05); /* @kind shadow */

  /* ---- Motion ---- */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);   /* @kind other */
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);   /* @kind other */
  --dur-fast: 140ms;   /* @kind other */
  --dur-base: 220ms;   /* @kind other */
  --dur-slow: 400ms;   /* @kind other */

  /* ---- Backdrop blur (glass nav / dialogs) ---- */
  --blur-glass: saturate(140%) blur(14px);   /* @kind other */
}