/* Sigma AI — utility classes
   Small single-purpose classes you can combine in HTML instead of writing one-off CSS,
   e.g. <div class="flex items-center gap-2 mt-4">. Loaded last so they win over component styles. */

/* Display & layout */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.block { display: block; }
.hidden { display: none !important; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1 1 0%; min-width: 0; }
.shrink-0 { flex-shrink: 0; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.items-baseline { align-items: baseline; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.place-center { place-items: center; }
.relative { position: relative; }
.w-full { width: 100%; }
.min-w-0 { min-width: 0; }

/* Spacing (4px scale) */
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.m-0 { margin: 0; }
.ml-auto { margin-left: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mt-10 { margin-top: 40px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.p-0 { padding: 0; }
.p-4 { padding: 16px; }
.p-5 { padding: 20px; }
.p-6 { padding: 24px; }

/* Text */
.text-xs { font-size: 11.5px; }
.text-sm { font-size: 13px; }
.text-base { font-size: 14px; }
.text-md { font-size: 15px; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 22px; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.text-strong { color: var(--text); }
.muted { color: var(--text-2); }
.subtle { color: var(--text-3); }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tabular { font-variant-numeric: tabular-nums; }
.uppercase-label { font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nowrap { white-space: nowrap; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.balance { text-wrap: balance; }

/* Surfaces */
.surface { background: var(--surface); }
.surface-2 { background: var(--surface-2); }
.border { border: 1px solid var(--line); }
.border-t { border-top: 1px solid var(--line); }
.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: 999px; }
.overflow-hidden { overflow: hidden; }

/* Interaction */
.lift { transition: transform .25s var(--ease), box-shadow .25s; }
.lift:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.no-select { user-select: none; }

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

/* Responsive visibility */
@media (max-width: 760px) { .hide-mobile { display: none !important; } }
@media (min-width: 761px) { .show-mobile { display: none !important; } }