:root {
  --zl-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --zl-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --zl-dur-fast: 150ms;
  --zl-dur-med: 280ms;
  --zl-dur-slow: 420ms;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --zl-dur-fast: 0ms;
    --zl-dur-med: 0ms;
    --zl-dur-slow: 0ms;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@keyframes zlFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes zlSlideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

@keyframes zlScaleIn {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

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

@keyframes zlThinkPulse {
  0%, 100% { opacity: 0.65; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.08); }
}

@keyframes zlShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}

.zl-fade-in {
  animation: zlFadeIn var(--zl-dur-med) var(--zl-ease-out) both;
}

.zl-slide-up {
  animation: zlSlideUp var(--zl-dur-med) var(--zl-ease-out) both;
}

.zl-scale-in {
  animation: zlScaleIn var(--zl-dur-slow) var(--zl-ease-out) both;
}

.zl-stagger > * {
  animation: zlSlideUp var(--zl-dur-med) var(--zl-ease-out) both;
  animation-delay: calc(var(--zl-i, 0) * 40ms);
}

.zl-think-shimmer {
  background: linear-gradient(90deg, rgba(255,255,255,.42) 0%, rgba(255,255,255,.88) 50%, rgba(255,255,255,.42) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: zlShimmerText 2.2s ease-in-out infinite;
}

.zl-think-inline__ic {
  animation: zlThinkPulse 2s ease-in-out infinite;
}

.zl-empty-fallback {
  font-size: 14px;
  line-height: 1.55;
  color: rgba(255,255,255,.72);
  margin: 0;
}

.zl-retry-btn {
  display: inline-flex;
  align-items: center;
  margin-top: 10px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.08);
  color: #fff;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--zl-dur-fast) var(--zl-ease-out), transform var(--zl-dur-fast) var(--zl-ease-out);
}

.zl-retry-btn:hover {
  background: rgba(255,255,255,.14);
  transform: translateY(-1px);
}

.zl-shake {
  animation: zlShake 0.45s ease both;
}

.zl-panel-in {
  animation: zlFadeIn var(--zl-dur-med) var(--zl-ease-out) both;
}

.zl-hover-lift {
  transition: transform var(--zl-dur-med) var(--zl-ease-out), box-shadow var(--zl-dur-med) var(--zl-ease-out), border-color var(--zl-dur-med) var(--zl-ease-out);
}

.zl-hover-lift:hover {
  transform: translateY(-2px);
}

.zl-focus-ring {
  transition: box-shadow var(--zl-dur-fast) var(--zl-ease-out), border-color var(--zl-dur-fast) var(--zl-ease-out);
}

.zl-focus-ring:focus-visible {
  box-shadow: 0 0 0 3px rgba(112,184,255,.35);
}