/* --- Accessibility & Assistive Technology Utilities --- */

/* 
  Screen Reader Only Helper
  Hides content visually while keeping it readable by screen readers.
*/
.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;
}

/* 
  Skip Link Style
  Positioned off-screen, but transitions into view at the very top of the window when focused by a keyboard (tab).
*/
.skip-link {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--accent-button);
  color: var(--accent-button-text);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 0 0 8px 8px;
  font-weight: 700;
  text-decoration: none;
  font-size: var(--text-sm);
  z-index: 9999;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: top 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.skip-link:focus {
  top: 0;
  color: var(--accent-button-text-focus);
}

/* 
  Enhanced Accessible Keyboard Focus Rings
  Uses :focus-visible so focus rings are only shown for keyboard navigation.
  Resets default outlines and sets custom offsets to guarantee a 3:1 contrast ratio.
*/
*:focus {
  outline: none;
}

*:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Custom exception for focusable elements inside components */
.nav-links a:focus-visible {
  outline-offset: 6px;
}

/* Print CSS Stylesheet Defaults */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 12pt;
  }

  .site-header,
  .site-footer,
  .skip-link,
  .talk-links,
  .badge-upcoming {
    display: none !important;
  }

  .site-wrapper {
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  main {
    margin-top: 0 !important;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 90%;
    color: #333333;
  }

  h2 {
    page-break-after: avoid;
  }

  blockquote,
  pre {
    page-break-inside: avoid;
    border-left: 3px solid #333;
  }
}