/* ================================================================
   Cosmic Orb Spinner — Originkit Cosmic Orb replacement for spinners
   ================================================================
   Two tiers:
     1. .tornado-spinner-sm  — small inline (14–20px), CSS-only orb glow
     2. .tornado-spinner     — medium/large WebGL Cosmic Orb
   Class names kept as "tornado-*" for backward compatibility with
   existing HTML that references them throughout studio-page.js.
   ================================================================ */

/* ── Small inline cosmic orb (CSS-only, replaces spinner-border-sm) ── */
.tornado-spinner-sm {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
  vertical-align: -.125em;
  position: relative;
}
.tornado-spinner-sm::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(
    circle at 38% 38%,
    rgba(255, 255, 255, 0.9) 0%,
    var(--tornado-color, var(--irc-teal, #00D4AA)) 25%,
    rgba(106, 60, 255, 0.7) 55%,
    rgba(162, 75, 255, 0.3) 75%,
    transparent 100%
  );
  box-shadow:
    0 0 4px 1px var(--tornado-color, var(--irc-teal, #00D4AA)),
    inset 0 0 3px rgba(255, 255, 255, 0.3);
  animation: cosmic-orb-spin 2.4s linear infinite;
}

@keyframes cosmic-orb-spin {
  0%   { transform: rotate(0deg);   filter: brightness(0.9) hue-rotate(0deg); }
  25%  { transform: rotate(90deg);  filter: brightness(1.1) hue-rotate(15deg); }
  50%  { transform: rotate(180deg); filter: brightness(0.85) hue-rotate(30deg); }
  75%  { transform: rotate(270deg); filter: brightness(1.1) hue-rotate(15deg); }
  100% { transform: rotate(360deg); filter: brightness(0.9) hue-rotate(0deg); }
}

/* Size variant matching the old 12px×12px inline spinners */
.tornado-spinner-xs {
  width: 12px;
  height: 12px;
}
.tornado-spinner-xs::before {
  animation-duration: 2s;
}

/* ── Medium / large cosmic orb container (WebGL canvas) ──────────── */
.tornado-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.tornado-spinner canvas {
  display: block;
  border-radius: 50%;
}

/* Default sizing */
.tornado-spinner--md {
  width: 2.5rem;
  height: 2.5rem;
}
.tornado-spinner--lg {
  width: 4rem;
  height: 4rem;
}

/* ── Color utilities ─────────────────────────────────────────────── */
.tornado-teal  { --tornado-color: var(--irc-teal, #00D4AA); }
.tornado-amber { --tornado-color: var(--irc-amber, #F5A623); }
.tornado-blue  { --tornado-color: var(--irc-blue, #1A6FC4); }
.tornado-white { --tornado-color: #ffffff; }

/* ── Reduced motion ──────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .tornado-spinner-sm::before {
    animation: none;
    filter: brightness(1);
  }
  .tornado-spinner canvas {
    /* WebGL engine handles reduced motion internally */
  }
}