/* Separator */
.separator {
  flex-shrink: 0;
  background: var(--border);
}
.separator-horizontal { width: 100%; height: 1px; margin: 0.25rem 0; }
.separator-vertical   { width: 1px; height: 100%; margin: 0 0.25rem; }

/* Avatar */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--muted);
}
.avatar-sm  { width: 1.5rem;  height: 1.5rem; }
.avatar-md  { width: 2rem;    height: 2rem; }
.avatar-default { width: 2.5rem; height: 2.5rem; }
.avatar-lg  { width: 3rem;    height: 3rem; }
.avatar-xl  { width: 4rem;    height: 4rem; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-fallback {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted-foreground);
  text-transform: uppercase;
}

/* Skeleton */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--muted) 25%,
    oklch(from var(--muted) calc(l + 0.05) c h) 50%,
    var(--muted) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite ease-in-out;
  border-radius: var(--radius-md);
}

/* Spinner */
.spinner {
  display: inline-block;
  border: 2px solid var(--border);
  border-top-color: var(--foreground);
  border-radius: 9999px;
  animation: spin 0.6s linear infinite;
}
.spinner-sm { width: 0.875rem; height: 0.875rem; }
.spinner-default { width: 1.125rem; height: 1.125rem; }
.spinner-lg { width: 1.5rem; height: 1.5rem; }

/* Progress */
.progress {
  position: relative;
  height: 0.375rem;
  width: 100%;
  overflow: hidden;
  border-radius: 9999px;
  background: var(--secondary);
}
.progress-bar {
  height: 100%;
  background: var(--primary);
  border-radius: 9999px;
  transition: width 0.3s ease;
  flex: 1;
  transform-origin: left;
}

/* Slider */
.slider {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  touch-action: none;
  user-select: none;
  cursor: pointer;
  height: 1.25rem;
}
.slider-track {
  position: relative;
  height: 0.375rem;
  width: 100%;
  background: var(--secondary);
  border-radius: 9999px;
  overflow: hidden;
}
.slider-range {
  position: absolute;
  height: 100%;
  background: var(--primary);
  border-radius: 9999px;
  left: 0;
}
.slider input[type="range"] {
  position: absolute;
  inset: 0;
  width: 100%;
  opacity: 0;
  cursor: pointer;
  margin: 0;
}
.slider-thumb {
  display: block;
  position: absolute;
  width: 1.125rem;
  height: 1.125rem;
  border-radius: 9999px;
  border: 2px solid var(--primary);
  background: var(--background);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-fast) ease;
  pointer-events: none;
  transform: translate(-50%, -50%);
  top: 50%;
}
.slider:hover .slider-thumb { transform: translate(-50%, -50%) scale(1.1); }

/* Toggle */
.toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  background: transparent;
  border: none;
  color: var(--muted-foreground);
  transition: background-color var(--duration-fast), color var(--duration-fast);
  padding: 0 0.75rem;
  height: 2.25rem;
  font-family: inherit;
}
.toggle:hover { background: var(--muted); color: var(--muted-foreground); }
.toggle[data-state="on"] { background: var(--accent); color: var(--accent-foreground); }
.toggle-sm { height: 1.875rem; padding: 0 0.625rem; font-size: 0.8125rem; }
.toggle-lg { height: 2.75rem; padding: 0 1.25rem; }
.toggle-outline { border: 1px solid transparent; }
.toggle-outline:hover { border-color: var(--border); }
.toggle-outline[data-state="on"] { border-color: var(--border); }