@layer utilities {
/* utilities.css — Essential utility classes */

/* Visibility */
.is-hidden { display: none !important; }
.is-disabled { opacity: 0.5; pointer-events: none; }
.is-loading { animation: subtlePulse 2s ease-in-out infinite; }
.is-invalid { border-color: var(--color-negative) !important; }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Text alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Text sizes */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }

/* Font weight */
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Flex helpers */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

/* Spacing */
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.px-2 { padding-inline: 0.5rem; }
.px-3 { padding-inline: 0.75rem; }
.px-4 { padding-inline: 1rem; }
.py-1 { padding-block: 0.25rem; }
.py-2 { padding-block: 0.5rem; }
.py-3 { padding-block: 0.75rem; }

/* Width */
.w-full { width: 100%; }

/* Truncation */
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Scrollbar styling */
.progress-scroll {
  scrollbar-width: thin;
  scrollbar-color: var(--color-ink-muted) var(--color-canvas-raised);
  -webkit-overflow-scrolling: touch;
}

.progress-scroll::-webkit-scrollbar { height: 6px; }
.progress-scroll::-webkit-scrollbar-track { background: var(--color-canvas-raised); border-radius: 3px; }
.progress-scroll::-webkit-scrollbar-thumb { background: var(--color-ink-muted); border-radius: 3px; }
.progress-scroll::-webkit-scrollbar-thumb:hover { background: var(--color-ink-subtle); }

/* Grid overflow fix */
.min-w-0 { min-width: 0; }
.overflow-hidden { overflow: hidden; }

/* Relative/absolute positioning */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.inset-0 { inset: 0; }

/* Pointer events */
.pointer-events-none { pointer-events: none; }

/* Flex-shrink */
.flex-shrink-0 { flex-shrink: 0; }

/* Additional spacing */
.mt-3 { margin-top: 0.75rem; }
.mb-0 { margin-bottom: 0; }
.mb-3 { margin-bottom: 0.75rem; }
.mr-3 { margin-right: 0.75rem; }

/* Additional z-index */
.z-50 { z-index: 50; }

/* Max-height helpers */
.max-h-64 { max-height: 16rem; }
.max-h-56 { max-height: 14rem; }
.overflow-y-auto { overflow-y: auto; }

/* Status dot (small colored indicator) */
.status-dot {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* Form required field indicator */
.form-required-indicator {
  color: var(--color-negative);
  margin-left: 0.125rem;
}

/* is-open — toggleable open state (dropdowns, panels) */
.dropdown__menu:not(.is-hidden) { display: block; }
.step-selector__dropdown:not(.is-hidden) { display: block; }

/* is-dragover — file drop zone active state */
.is-dragover {
  border-color: var(--color-link) !important;
  background: oklch(0.96 0.04 260) !important;
}

[data-theme="dark"] .is-dragover {
  background: oklch(0.2 0.04 260) !important;
}

/* is-highlighted — keyboard-navigated list item */
.is-highlighted {
  background: var(--color-canvas-raised);
  outline: 2px solid var(--color-link);
  outline-offset: -2px;
}

/* is-collapsed / is-expanded — outline sidebar toggle */
.is-collapsed { /* Collapsed state handled by JS visibility */ }
.is-expanded  { /* Expanded state is default */ }

/* is-last-visible — rounded bottom corners on collapsed step card header */
.is-last-visible {
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* quick-action-btn — small action insert buttons (rich text editor) */
.quick-action-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.3125rem 0.625rem;
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-canvas);
  color: var(--color-ink-subtle);
  cursor: pointer;
  transition: background 0.1s ease;
}

.quick-action-btn:hover {
  background: var(--color-canvas-raised);
  color: var(--color-ink);
}

/* Additional spacing */
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.my-8 { margin-block: 2rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.p-6 { padding: 1.5rem; }

/* Width/height helpers */
.h-full { height: 100%; }

/* Display */
.inline { display: inline; }
.inline-flex { display: inline-flex; }
.block { display: block; }

/* Italic */
.italic { font-style: italic; }

/* Font family */
.font-mono { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; }

/* List styles */
.list-disc { list-style-type: disc; }
.list-inside { list-style-position: inside; }

/* Auto margins */
.mx-auto { margin-inline: auto; }

/* Additional margin */
.mb-1 { margin-bottom: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-4 { margin-left: 1rem; }
.mr-3 { margin-right: 0.75rem; }
.mr-4 { margin-right: 1rem; }

/* Cursor */
.cursor-move { cursor: move; }
.cursor-pointer { cursor: pointer; }

/* Border radius */
.rounded { border-radius: var(--radius); }

/* Width helpers */
.w-6 { width: 1.5rem; }

/* Additional margin */
.mr-2 { margin-right: 0.5rem; }
.p-1 { padding: 0.25rem; }

/* Fractional spacing (Tailwind-compatible, dot escaped) */
.mt-0\.5 { margin-top: 0.125rem; }
.p-0\.5 { padding: 0.125rem; }

/* Additional flex alignment */
.items-end { align-items: flex-end; }
.justify-end { justify-content: flex-end; }

/* Additional margin */
.ml-3 { margin-left: 0.75rem; }

/* Additional padding */
.pl-5 { padding-left: 1.25rem; }

/* Width helpers */
.w-8 { width: 2rem; }
.w-48 { width: 12rem; }

/* Text transforms */
.uppercase { text-transform: uppercase; }
.tracking-wider { letter-spacing: 0.05em; }

/* Font variant */
.tabular-nums { font-variant-numeric: tabular-nums; }

/* Border utility */
.border { border: 1px solid var(--color-border); }

/* Transform */
.rotate-90 { transform: rotate(90deg); }

/* Grid */
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }

/* Display */
.inline-block { display: inline-block; }

/* Text sizes (additional) */
.text-base { font-size: var(--text-base); }
.text-2xl { font-size: var(--text-2xl); }

/* Letter spacing */
.tracking-wide { letter-spacing: 0.025em; }
.tracking-widest { letter-spacing: 0.1em; }

/* White space */
.whitespace-pre-wrap { white-space: pre-wrap; }

/* Border bottom */
.border-b { border-bottom: 1px solid var(--color-border); }

/* Overflow */
.overflow-auto { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-hidden { overflow-y: hidden; }

/* Transitions */
.transition-colors { transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease; }
.transition-transform { transition: transform 0.15s ease; }

/* Opacity */
.opacity-0 { opacity: 0; }
.opacity-75 { opacity: 0.75; }

/* Icon sizing */
.w-4 { width: 1rem; }
.h-4 { height: 1rem; }
.w-5 { width: 1.25rem; }
.h-5 { height: 1.25rem; }
.h-auto { height: auto; }
.w-px { width: 1px; }

/* Spacing gaps */
.gap-x-4 { column-gap: 1rem; }
.gap-y-2 { row-gap: 0.5rem; }
.space-y-2\.5 > * + * { margin-top: 0.625rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-4 > * + * { margin-top: 1rem; }

/* Padding */
.p-8 { padding: 2rem; }
.px-6 { padding-inline: 1.5rem; }
.py-4 { padding-block: 1rem; }
.py-8 { padding-block: 2rem; }

/* Margin */
.ml-1 { margin-left: 0.25rem; }
.ml-auto { margin-left: auto; }
.mr-1 { margin-right: 0.25rem; }

/* Width */
.w-24 { width: 6rem; }

/* Min height */
.min-h-screen { min-height: 100vh; }

/* Drag state (semantic ghost class for Sortable.js) */
.is-dragging { opacity: 0.5; }
}