/*
 * Media Accessibility Styles
 * Phase 3: WCAG 2.1 Level AA Compliance
 * 
 * Styles for transcript links, media controls, and accessibility features
 */

/* ===========================
   Media Accessibility Container
   =========================== */

.media-accessibility {
  margin: 1rem 0;
  padding: 0.75rem;
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  border-radius: 4px;
  font-size: 0.9rem;
}

.media-accessibility p {
  margin: 0.5rem 0;
  line-height: 1.5;
}

.media-accessibility p:first-child {
  margin-top: 0;
}

.media-accessibility p:last-child {
  margin-bottom: 0;
}

/* ===========================
   Transcript Links
   =========================== */

.transcript-link a,
.download-link a {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: #007bff;
  color: #ffffff !important;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 500;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.transcript-link a:hover,
.transcript-link a:focus,
.download-link a:hover,
.download-link a:focus {
  background-color: #0056b3;
  text-decoration: underline;
  transform: translateY(-1px);
}

.transcript-link a:focus,
.download-link a:focus {
  outline: 2px solid #0056b3;
  outline-offset: 2px;
}

.transcript-link a:active,
.download-link a:active {
  transform: translateY(0);
}

/* Icon spacing */
.transcript-link a span[aria-hidden],
.download-link a span[aria-hidden] {
  margin-right: 0.5rem;
}

/* ===========================
   Download Links
   =========================== */

.download-link a {
  background-color: #28a745;
}

.download-link a:hover,
.download-link a:focus {
  background-color: #218838;
}

/* ===========================
   Caption Notices
   =========================== */

.youtube-captions-notice,
.vimeo-captions-notice {
  padding: 0.75rem;
  background-color: #fff3cd;
  border-left: 4px solid #ffc107;
  color: #856404;
  margin: 0.5rem 0;
}

.youtube-captions-notice strong,
.vimeo-captions-notice strong {
  color: #856404;
  font-weight: 600;
}

/* ===========================
   Transcript Sections
   =========================== */

.accessibility-transcripts {
  margin: 3rem 0 2rem;
  padding: 2rem;
  background-color: #ffffff;
  border: 1px solid #dee2e6;
  border-radius: 8px;
}

.transcript-section {
  margin: 2rem 0;
  padding: 1.5rem;
  background-color: #f8f9fa;
  border-left: 4px solid #007bff;
  border-radius: 4px;
}

.transcript-section:first-of-type {
  margin-top: 0;
}

.transcript-section:last-of-type {
  margin-bottom: 0;
}

.transcript-section h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: #212529;
  font-size: 1.25rem;
  font-weight: 600;
}

.transcript-section:focus {
  outline: 3px solid #007bff;
  outline-offset: 2px;
  background-color: #e7f3ff;
}

.transcript-content {
  color: #495057;
  line-height: 1.6;
  font-size: 0.95rem;
}

.transcript-content p {
  margin: 0.75rem 0;
}

.transcript-content em {
  color: #6c757d;
  font-style: italic;
}

/* ===========================
   Audio/Video Players
   =========================== */

audio,
video {
  display: block;
  width: 100%;
  max-width: 640px;
  margin: 1rem 0;
  background-color: #000;
  border-radius: 4px;
}

/* Enhanced focus for media controls */
audio:focus,
video:focus {
  outline: 3px solid #007bff;
  outline-offset: 3px;
}

/* ===========================
   Media Container Layout
   =========================== */

.field-name-field-audio,
.field-name-field-video {
  margin: 1.5rem 0;
}

.jwplayer-video {
  position: relative;
  margin-bottom: 1rem;
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 768px) {
  .media-accessibility {
    padding: 0.5rem;
    font-size: 0.85rem;
  }
  
  .transcript-link a,
  .download-link a {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    display: block;
    text-align: center;
    margin: 0.5rem 0;
  }
  
  .accessibility-transcripts {
    padding: 1rem;
    margin: 2rem 0 1rem;
  }
  
  .transcript-section {
    padding: 1rem;
    margin: 1rem 0;
  }
  
  .transcript-section h3 {
    font-size: 1.1rem;
  }
}

/* ===========================
   Print Styles
   =========================== */

@media print {
  .media-accessibility {
    border: 1px solid #000;
    page-break-inside: avoid;
  }
  
  .transcript-link a,
  .download-link a {
    color: #000 !important;
    background-color: transparent !important;
    border: 1px solid #000;
  }
  
  .transcript-link a::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }
  
  .accessibility-transcripts {
    page-break-before: always;
  }
  
  .transcript-section {
    page-break-inside: avoid;
  }
  
  /* Show all transcripts in print */
  .accessibility-transcripts,
  .transcript-section {
    display: block !important;
  }
}

/* ===========================
   High Contrast Mode Support
   =========================== */

@media (prefers-contrast: high) {
  .media-accessibility {
    border: 2px solid currentColor;
  }
  
  .transcript-link a,
  .download-link a {
    border: 2px solid currentColor;
  }
  
  .transcript-section {
    border-left-width: 6px;
  }
}

/* ===========================
   Reduced Motion Support
   =========================== */

@media (prefers-reduced-motion: reduce) {
  .transcript-link a,
  .download-link a {
    transition: none;
    transform: none !important;
  }
}

/* ===========================
   Focus Within Enhancement
   =========================== */

.media-accessibility:focus-within {
  border-color: #007bff;
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

/* ===========================
   Screen Reader Only Elements
   =========================== */

.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;
}

.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* ===========================
   Accessibility Helpers
   =========================== */

/* Focus visible enhancement */
.transcript-link a:focus-visible,
.download-link a:focus-visible {
  outline: 3px solid #0056b3;
  outline-offset: 3px;
}

/* ===========================
   Dark Mode Support
   =========================== */

@media (prefers-color-scheme: dark) {
  .media-accessibility {
    background-color: #2d3748;
    border-color: #4a5568;
    color: #e2e8f0;
  }
  
  .transcript-section {
    background-color: #2d3748;
    border-left-color: #4299e1;
  }
  
  .transcript-section h3 {
    color: #e2e8f0;
  }
  
  .transcript-content {
    color: #cbd5e0;
  }
  
  .transcript-content em {
    color: #a0aec0;
  }
  
  .accessibility-transcripts {
    background-color: #1a202c;
    border-color: #4a5568;
  }
  
  .youtube-captions-notice,
  .vimeo-captions-notice {
    background-color: #744210;
    border-left-color: #d69e2e;
    color: #fbd38d;
  }
  
  .youtube-captions-notice strong,
  .vimeo-captions-notice strong {
    color: #fbd38d;
  }
}

/* ===========================
   Utility Classes
   =========================== */

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Skip to transcript link */
.skip-to-transcript {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-to-transcript:focus {
  position: fixed;
  top: 0;
  left: 0;
  width: auto;
  height: auto;
  padding: 1rem;
  background: #007bff;
  color: #fff;
  z-index: 10000;
  text-decoration: none;
  border-radius: 0 0 4px 0;
}