/* ============================================================
   UTILITIES — shadcn/UI-inspired reusable patterns
   ============================================================ */

/* Card — consistent card styling */
.card {
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  box-shadow: 0 1px 3px hsl(var(--foreground) / 0.02),
              0 8px 40px hsl(var(--foreground) / 0.04);
}

.card-header  { padding: 24px 24px 0; }
.card-content { padding: 24px; }
.card-footer  { padding: 0 24px 24px; }

/* Badge — small label pills */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: calc(var(--radius) * 0.4);
  background: hsl(var(--muted));
  color: hsl(var(--muted-foreground));
  border: 1px solid hsl(var(--border-light));
  line-height: 1;
}

.badge-human { background: var(--human-bg); color: var(--human); border-color: var(--human-bg-strong); }
.badge-ai    { background: var(--ai-bg);    color: var(--ai);    border-color: var(--ai-bg-strong); }
.badge-flow  { background: hsl(38 90% 44% / 0.08); color: var(--flow); border-color: hsl(38 90% 44% / 0.15); }
.badge-iface { background: var(--iface-bg); color: var(--iface); border-color: hsl(160 80% 30% / 0.15); }
.badge-gov   { background: var(--gov-bg);   color: var(--gov);   border-color: var(--gov-bg-strong); }

/* Separator */
.separator {
  height: 1px;
  background: hsl(var(--border));
  border: none;
  margin: 12px 0;
}

.separator-light {
  background: hsl(var(--border-light));
}

/* Section label / overline */
.overline {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: hsl(var(--ink-4));
}

/* Prose container */
.prose {
  font-size: 14.5px;
  color: hsl(var(--ink-3));
  font-weight: 300;
  line-height: 1.65;
  max-width: 620px;
}

.prose strong { font-weight: 500; color: hsl(var(--foreground)); }
.prose em     { font-style: italic; }

/* 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: 0;
}

/* Focus ring (accessible) */
.focus-ring:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 2px;
}