/* ============================================================
   ACCESSIBILITY — Skip link, focus ring, screen-reader utilities
   ============================================================ */

/* Skip to main content */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--green-primary);
  color: var(--pure-white);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  z-index: 9999;
  border-radius: 0 0 var(--radius-sm) 0;
  text-decoration: none;
  transition: top 0.1s;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--gold-primary);
  outline-offset: 2px;
}

/* Screen reader only */
.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}

.screen-reader-text:focus {
  background-color: var(--pure-white);
  border-radius: var(--radius-sm);
  box-shadow: 0 0 2px 2px rgba(0,0,0,0.6);
  clip: auto !important;
  clip-path: none;
  color: var(--text-primary);
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  height: auto;
  left: 0.3125rem;
  line-height: normal;
  padding: 1rem 1.5rem;
  text-decoration: none;
  top: 0.3125rem;
  width: auto;
  z-index: 100000;
}

/* Focus ring — visible on all interactive elements */
:focus-visible {
  outline: 2px solid var(--gold-primary);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Remove focus ring for mouse users (applied via JS adding .using-mouse class) */
.using-mouse :focus:not(:focus-visible) {
  outline: none;
}

/* High-contrast focus for buttons */
.btn:focus-visible {
  outline: 3px solid var(--gold-primary);
  outline-offset: 4px;
}

/* Nav toggle focus */
.nav-toggle:focus-visible {
  outline: 2px solid var(--gold-primary);
  outline-offset: 3px;
}

/* Ensure sufficient contrast on dark backgrounds */
.site-footer a:focus-visible {
  outline-color: var(--gold-primary);
}

/* ARIA live region for filter announcements */
[aria-live] {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

/* High-contrast mode support */
@media (forced-colors: active) {
  .btn {
    border: 2px solid ButtonText;
  }

  .badge {
    border: 1px solid ButtonText;
  }

  .glass-card {
    border: 1px solid ButtonText;
  }
}

/* Accessible table styles */
.activity-content table caption {
  font-weight: 600;
  text-align: left;
  padding-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  opacity: 0.8;
}

/* Language switcher ARIA */
.lang-switcher [aria-current="true"] a {
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}