/**
 * OOXEZN Quantum Particle Flux Button System
 * Ultra-smooth 60fps GPU-accelerated Bioluminescent Loading Engine
 */

@property --flux-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

@keyframes fluxOrbit {
  0% {
    --flux-angle: 0deg;
  }
  100% {
    --flux-angle: 360deg;
  }
}

@keyframes fluxParticleFloat {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes fluxShockwave {
  0% {
    transform: scale(0.85);
    opacity: 0.9;
    box-shadow: 0 0 0 0 rgba(0, 255, 229, 0.8), 0 0 20px rgba(0, 255, 229, 0.5);
  }
  100% {
    transform: scale(1);
    opacity: 1;
    box-shadow: 0 0 0 16px rgba(0, 255, 229, 0), 0 0 30px rgba(0, 255, 229, 0.4);
  }
}

@keyframes fluxShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-5px); }
  40%, 80% { transform: translateX(5px); }
}

@keyframes fluxSpinFast {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Master Button Container */
.btn-quantum,
.btn-quantum-flux {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 24px;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: #FFFFFF;
  background: rgba(26, 10, 46, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 255, 229, 0.25);
  border-radius: 9999px;
  cursor: pointer;
  overflow: hidden;
  user-select: none;
  touch-action: manipulation;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  z-index: 1;
}

/* Ambient glow gradient backdrop */
.btn-quantum::before,
.btn-quantum-flux::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1.5px;
  background: conic-gradient(
    from var(--flux-angle, 0deg),
    rgba(0, 255, 229, 0.8) 0%,
    rgba(138, 43, 226, 0.8) 35%,
    rgba(255, 107, 43, 0.8) 70%,
    rgba(0, 255, 229, 0.8) 100%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0.4;
  transition: opacity 0.3s ease;
}

.btn-quantum:hover:not(:disabled)::before,
.btn-quantum-flux:hover:not(:disabled)::before {
  opacity: 0.9;
  animation: fluxOrbit 3s linear infinite;
}

.btn-quantum:hover:not(:disabled),
.btn-quantum-flux:hover:not(:disabled) {
  transform: translateY(-1.5px);
  box-shadow: 0 8px 30px rgba(0, 255, 229, 0.25), 0 0 15px rgba(138, 43, 226, 0.3);
  border-color: rgba(0, 255, 229, 0.4);
}

.btn-quantum:active:not(:disabled),
.btn-quantum-flux:active:not(:disabled) {
  transform: scale(0.97);
}

/* Content Elements */
.btn-quantum .quantum-content,
.btn-quantum-flux .quantum-content {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  z-index: 2;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.btn-quantum .quantum-spinner,
.btn-quantum-flux .quantum-spinner {
  display: none;
  position: relative;
  width: 18px;
  height: 18px;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  line-height: 1;
  color: #00FFE5;
  animation: fluxSpinFast 0.75s linear infinite;
  text-shadow: 0 0 10px rgba(0, 255, 229, 0.8);
  flex-shrink: 0;
}

.btn-quantum .quantum-spinner::before,
.btn-quantum-flux .quantum-spinner::before {
  content: '𖦹';
  display: inline-block;
}

/* Fluid Particle Layer */
.btn-quantum .quantum-fluid-layer,
.btn-quantum-flux .quantum-fluid-layer {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(0, 255, 229, 0.15), transparent 70%),
              radial-gradient(circle at 80% 20%, rgba(138, 43, 226, 0.15), transparent 60%);
  background-size: 200% 200%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1;
}

/* ────────────────────────────────────────────────────────
   LOADING STATE
   ──────────────────────────────────────────────────────── */
.btn-quantum.is-loading,
.btn-quantum[data-state="loading"],
.btn-quantum-flux.is-loading,
.btn-quantum-flux[data-state="loading"] {
  pointer-events: none;
  cursor: wait;
  border-color: rgba(0, 255, 229, 0.6);
  background: rgba(13, 6, 24, 0.85);
  box-shadow: 0 0 25px rgba(0, 255, 229, 0.35), inset 0 0 15px rgba(138, 43, 226, 0.25);
}

.btn-quantum.is-loading::before,
.btn-quantum[data-state="loading"]::before,
.btn-quantum-flux.is-loading::before,
.btn-quantum-flux[data-state="loading"]::before {
  opacity: 1;
  animation: fluxOrbit 1.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.btn-quantum.is-loading .quantum-spinner,
.btn-quantum[data-state="loading"] .quantum-spinner,
.btn-quantum-flux.is-loading .quantum-spinner,
.btn-quantum-flux[data-state="loading"] .quantum-spinner {
  display: inline-block;
}

.btn-quantum.is-loading .quantum-fluid-layer,
.btn-quantum[data-state="loading"] .quantum-fluid-layer,
.btn-quantum-flux.is-loading .quantum-fluid-layer,
.btn-quantum-flux[data-state="loading"] .quantum-fluid-layer {
  opacity: 1;
  animation: fluxParticleFloat 3s ease infinite;
}

/* ────────────────────────────────────────────────────────
   SUCCESS STATE
   ──────────────────────────────────────────────────────── */
.btn-quantum.is-success,
.btn-quantum[data-state="success"],
.btn-quantum-flux.is-success,
.btn-quantum-flux[data-state="success"] {
  border-color: #00FFE5 !important;
  background: linear-gradient(135deg, rgba(0, 255, 229, 0.2), rgba(16, 185, 129, 0.25)) !important;
  color: #00FFE5 !important;
  animation: fluxShockwave 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: none;
}

.btn-quantum.is-success .quantum-spinner,
.btn-quantum-flux.is-success .quantum-spinner {
  display: none;
}

/* ────────────────────────────────────────────────────────
   ERROR STATE
   ──────────────────────────────────────────────────────── */
.btn-quantum.is-error,
.btn-quantum[data-state="error"],
.btn-quantum-flux.is-error,
.btn-quantum-flux[data-state="error"] {
  border-color: #FF4757 !important;
  background: rgba(255, 71, 87, 0.15) !important;
  color: #FF6B81 !important;
  box-shadow: 0 0 20px rgba(255, 71, 87, 0.4) !important;
  animation: fluxShake 0.4s ease-in-out;
}