/**
 * RSL Public Trust Surface - Main Stylesheet
 * Based on EMA Sage & Sand Design System
 *
 * Reference: RSL_PUBLIC_UI_SPECIFICATION.md
 * Status: Production
 * Last Updated: 2026-01-05
 */

@import url('tokens.css');

/* ═══════════════════════════════════════════════════════════════
   ACCESSIBILITY - SKIP LINK
   ═══════════════════════════════════════════════════════════════ */

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-sage-primary);
  color: white;
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  z-index: 1000;
  font-family: var(--font-body);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  border-radius: 0 0 var(--border-radius-sm) 0;
}

.skip-link:focus {
  top: 0;
  outline: none;
}

/* ═══════════════════════════════════════════════════════════════
   RESET & BASE
   ═══════════════════════════════════════════════════════════════ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-normal);
  color: var(--color-warmgray-900);
  background-color: var(--color-cream);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ═══════════════════════════════════════════════════════════════
   TYPOGRAPHY
   ═══════════════════════════════════════════════════════════════ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-warmgray-900);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: var(--font-size-h2);
  margin-top: var(--space-2xl);
}

h3 {
  font-size: var(--font-size-h3);
  margin-top: var(--space-xl);
}

h4 {
  font-size: var(--font-size-h4);
  margin-top: var(--space-lg);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-warmgray-700);
}

a {
  color: var(--color-sage-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--color-sage-dark);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-sage-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

strong {
  font-weight: var(--font-weight-semibold);
  color: var(--color-warmgray-900);
}

ul, ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
  color: var(--color-warmgray-700);
}

li {
  margin-bottom: var(--space-sm);
}

hr {
  border: none;
  height: 1px;
  background-color: var(--color-warmgray-300);
  margin: var(--space-2xl) 0;
}

/* ═══════════════════════════════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════════════════════════════ */

.site-container {
  width: 100%;
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  padding-left: calc(var(--space-lg) + var(--safe-area-left));
  padding-right: calc(var(--space-lg) + var(--safe-area-right));
}

.site-container--narrow {
  max-width: var(--max-width-narrow);
}

main {
  flex: 1;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-3xl);
}

/* ═══════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════ */

.site-header {
  background-color: var(--color-cream);
  border-bottom: 1px solid var(--color-warmgray-300);
  min-height: var(--header-height);
  padding-top: var(--safe-area-top);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-body);
  color: var(--color-warmgray-900);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.site-header__logo:hover {
  text-decoration: none;
  color: var(--color-sage-primary);
}

.site-header__logo-icon {
  width: 32px;
  height: 32px;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-left: var(--space-xl);
}

.site-nav__link {
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-warmgray-700);
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-normal);
  /* Apple touch target minimum */
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-nav__link:hover {
  color: var(--color-sage-primary);
  background-color: var(--color-sand-light);
  text-decoration: none;
}

.site-nav__link--active {
  color: var(--color-sage-primary);
  background-color: var(--color-sand-background);
}

/* Mobile navigation toggle */
.site-nav__toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
}

.site-nav__toggle-icon {
  width: 24px;
  height: 24px;
  stroke: var(--color-warmgray-700);
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════ */

.site-footer {
  background-color: var(--color-sand-background);
  border-top: 1px solid var(--color-warmgray-300);
  padding: var(--space-lg) 0;
  padding-bottom: calc(var(--space-lg) + var(--safe-area-bottom));
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.site-footer__copyright {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
}

.site-footer__links {
  display: flex;
  gap: var(--space-lg);
}

.site-footer__link {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
  text-decoration: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.site-footer__link:hover {
  color: var(--color-sage-primary);
}

/* ═══════════════════════════════════════════════════════════════
   CARDS & PANELS
   ═══════════════════════════════════════════════════════════════ */

.card {
  background-color: var(--color-sand-light);
  border: 1px solid var(--color-warmgray-300);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__title {
  font-size: var(--font-size-h4);
  margin-bottom: var(--space-sm);
  margin-top: 0;
}

.card__description {
  color: var(--color-warmgray-700);
  margin-bottom: var(--space-md);
}

.card__link {
  font-weight: var(--font-weight-medium);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.card__link::after {
  content: '→';
  transition: transform var(--transition-normal);
}

.card__link:hover::after {
  transform: translateX(4px);
}

/* Document card variant */
.card--document {
  border-left: 4px solid var(--color-sage-primary);
}

.card--document .card__icon {
  font-size: var(--font-size-h3);
  margin-bottom: var(--space-sm);
}

/* ═══════════════════════════════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════════════════════════════ */

.section {
  margin-bottom: var(--space-3xl);
}

.section__header {
  margin-bottom: var(--space-lg);
}

.section__title {
  margin-top: 0;
}

.section__subtitle {
  color: var(--color-warmgray-500);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
}

/* Hero section */
.hero {
  text-align: center;
  padding: var(--space-3xl) 0;
  margin-bottom: var(--space-2xl);
}

.hero__title {
  font-size: var(--font-size-h1);
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: var(--font-size-h4);
  color: var(--color-warmgray-700);
  font-weight: var(--font-weight-regular);
  max-width: 640px;
  margin: 0 auto var(--space-xl);
}

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

/* ═══════════════════════════════════════════════════════════════
   RESEARCH PAPERS
   ═══════════════════════════════════════════════════════════════ */

.paper-item {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-warmgray-300);
}

.paper-item:last-of-type {
  border-bottom: none;
}

.paper-item h4 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
}

.paper-item h4 a {
  color: var(--color-sage-primary);
  text-decoration: none;
}

.paper-item h4 a:hover {
  color: var(--color-sage-dark);
  text-decoration: underline;
}

.paper-meta {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
  margin-bottom: var(--space-sm);
  font-weight: var(--font-weight-medium);
}

.paper-item p {
  color: var(--color-warmgray-700);
  font-size: var(--font-size-body-sm);
  line-height: var(--line-height-relaxed);
}

.paper-item em {
  color: var(--color-warmgray-500);
}

.section-note {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-warmgray-300);
  color: var(--color-warmgray-600);
  font-size: var(--font-size-body-sm);
}

/* ═══════════════════════════════════════════════════════════════
   AUDIO ITEMS (Media page)
   ═══════════════════════════════════════════════════════════════ */

.audio-item {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-warmgray-300);
}

.audio-item:last-of-type {
  border-bottom: none;
}

.audio-item h4 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-warmgray-900);
}

.audio-meta {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
  margin-bottom: var(--space-md);
  font-weight: var(--font-weight-medium);
}

.audio-item audio {
  width: 100%;
  max-width: 500px;
  height: 44px;
  border-radius: var(--border-radius-md);
}

/* Custom audio player styling for webkit browsers */
.audio-item audio::-webkit-media-controls-panel {
  background-color: var(--color-sand-light);
}

.audio-item audio::-webkit-media-controls-play-button {
  min-width: 44px;
  min-height: 44px;
}

/* Listening mode tags */
.listening-mode {
  display: inline-block;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  color: var(--color-sage-dark);
  background-color: var(--color-sage-light);
  padding: 2px 8px;
  border-radius: var(--border-radius-sm);
  margin-right: var(--space-xs);
  text-transform: capitalize;
}

/* Transcript details block */
.transcript-details {
  margin-top: var(--space-lg);
}

.transcript-details summary {
  font-size: var(--font-size-body-sm);
  color: var(--color-sage-primary);
  cursor: pointer;
  padding: var(--space-sm) 0;
  font-weight: var(--font-weight-medium);
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.transcript-details summary::-webkit-details-marker {
  display: none;
}

.transcript-details summary::before {
  content: '▸';
  display: inline-block;
  font-size: 0.8em;
  transition: transform 0.2s ease;
}

.transcript-details[open] summary::before {
  transform: rotate(90deg);
}

.transcript-details summary:hover {
  color: var(--color-sage-dark);
}

.transcript-details summary:focus {
  outline: 2px solid var(--color-sage-dark);
  outline-offset: 2px;
}

/* Transcript Reading Surface - optimized for academic reading */
.transcript-content {
  /* Constrain line length for optimal readability (60-75 chars) */
  max-width: 72ch;
  margin: var(--space-lg) 0;

  /* Reading surface styling */
  background-color: var(--color-sand-light);
  padding: var(--space-lg) var(--space-xl);
  border-left: 4px solid var(--color-sage-primary);
  border-radius: 0 6px 6px 0;

  /* Distinct typographic mode for transcripts */
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-warmgray-700);

  /* Scrollable container */
  max-height: 500px;
  overflow-y: auto;
  white-space: pre-wrap;
}

.transcript-content p {
  margin-bottom: 1.2em;
}

.transcript-content::-webkit-scrollbar {
  width: 8px;
}

.transcript-content::-webkit-scrollbar-track {
  background: var(--color-warmgray-200);
  border-radius: 4px;
}

.transcript-content::-webkit-scrollbar-thumb {
  background: var(--color-warmgray-400);
  border-radius: 4px;
}

.transcript-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-warmgray-500);
}

/* Transcript context header */
.transcript-context {
  font-size: 14px;
  font-style: italic;
  color: var(--color-warmgray-500);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-warmgray-300);
}

.transcript-loading {
  color: var(--color-warmgray-500);
  font-style: italic;
}

/* Transcript accessibility note */
.transcript-note {
  font-size: 0.85rem;
  color: var(--color-warmgray-500);
  margin-bottom: var(--space-md);
  font-style: italic;
}

/* Section description for audio groupings */
.section-description {
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-600);
  margin-top: calc(-1 * var(--space-sm));
  margin-bottom: var(--space-lg);
  font-style: italic;
}

/* Media page intro text */
.media-intro {
  font-size: var(--font-size-body);
  color: var(--color-warmgray-700);
  line-height: var(--line-height-relaxed);
}

/* Section context - orientation text before recordings */
.section-context {
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-xl);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-warmgray-100);
  border-left: 3px solid var(--color-sage-primary);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.section-context a {
  color: var(--color-sage-primary);
}

/* How to Use This Archive - collapsible guide */
.how-to-archive {
  margin: var(--space-lg) 0;
}

.how-to-archive summary {
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-sage-primary);
  cursor: pointer;
  padding: var(--space-sm) 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.how-to-archive summary::-webkit-details-marker {
  display: none;
}

.how-to-archive summary::before {
  content: '▸';
  display: inline-block;
  font-size: 0.8em;
  transition: transform 0.2s ease;
}

.how-to-archive[open] summary::before {
  transform: rotate(90deg);
}

.how-to-archive summary:hover {
  color: var(--color-sage-dark);
}

.how-to-archive summary:focus {
  outline: 2px solid var(--color-sage-dark);
  outline-offset: 2px;
}

.how-to-content {
  margin-top: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-sand-light);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-body-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-warmgray-700);
}

.how-to-content p {
  margin-bottom: var(--space-md);
}

.how-to-content p:last-child {
  margin-bottom: 0;
}

.how-to-content ul {
  margin-bottom: var(--space-md);
}

.how-to-content li {
  margin-bottom: var(--space-xs);
}

/* =========================
   Media Gate (Audio/Video Navigation)
   ========================= */

.media-gate {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.media-gate-card {
  background: var(--color-sand-light);
  border: 1px solid var(--color-warmgray-300);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.media-gate-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-sage-primary);
}

.media-gate-card h2 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-h3);
  color: var(--color-warmgray-900);
}

.media-gate-card p {
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-md);
}

.media-gate-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-body-sm);
  color: var(--color-sage-primary);
  text-decoration: none;
}

.media-gate-link::after {
  content: '→';
  transition: transform var(--transition-normal);
}

.media-gate-link:hover {
  color: var(--color-sage-dark);
  text-decoration: none;
}

.media-gate-link:hover::after {
  transform: translateX(4px);
}

/* Media Section (Audio/Video anchor targets) */
.media-section {
  scroll-margin-top: calc(var(--header-height) + var(--space-lg));
}

/* ═══════════════════════════════════════════════════════════════
   CABINET GATE
   Thematic entry point for browsing organized content
   Follows Media Gate pattern but for categorical navigation
   ═══════════════════════════════════════════════════════════════ */

/* CSS Variables for cabinet theming */
:root {
  --cabinet-gate-bg: var(--color-cream);
  --cabinet-gate-border: var(--color-warmgray-200);
  --cabinet-gate-hover-border: var(--color-sage-500);
  --cabinet-gate-shadow: rgba(0, 0, 0, 0.06);
}

.cabinet-gate {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

/* Compact variant for more categories (e.g., 6 audio cabinets) */
.cabinet-gate--compact {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-md);
}

/* Mini variant for 2-3 categories */
.cabinet-gate--mini {
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  max-width: 500px;
}

.cabinet-gate__card {
  background: var(--cabinet-gate-bg);
  border: 1px solid var(--cabinet-gate-border);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.cabinet-gate__card:hover,
.cabinet-gate__card:focus-within {
  border-color: var(--cabinet-gate-hover-border);
  box-shadow: 0 2px 8px var(--cabinet-gate-shadow);
}

.cabinet-gate__card h3,
.cabinet-gate__card h4 {
  margin: 0 0 var(--space-sm) 0;
  font-size: var(--font-size-body-lg, 1.125rem);
  color: var(--color-warmgray-900);
}

.cabinet-gate__card p {
  margin: 0 0 var(--space-md) 0;
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-600);
  flex-grow: 1;
  line-height: var(--line-height-relaxed);
}

.cabinet-gate__count {
  display: inline-block;
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
  margin-bottom: var(--space-sm);
}

.cabinet-gate__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-sage-700);
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-sage-300);
  border-radius: var(--border-radius-sm);
  text-align: center;
  transition: background-color 0.2s ease, border-color 0.2s ease;
  min-height: 44px;
  min-width: 44px;
}

.cabinet-gate__link:hover,
.cabinet-gate__link:focus {
  background-color: var(--color-sage-light, rgba(122, 155, 118, 0.1));
  border-color: var(--color-sage-500);
  text-decoration: none;
}

.cabinet-gate__link:focus-visible {
  outline: 2px solid var(--color-sage-primary);
  outline-offset: 2px;
}

/* Cabinet Section Headers - scroll target anchors */
.papers-cabinet,
.audio-cabinet,
.presentations-cabinet,
.visuals-cabinet {
  scroll-margin-top: calc(var(--header-height, 64px) + var(--space-lg));
}

/* Collapsible cabinet sections using <details> */
.cabinet-details {
  margin-bottom: var(--space-xl);
}

.cabinet-details summary {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  padding: var(--space-md) 0;
  list-style: none;
  border-bottom: 1px solid var(--color-warmgray-300);
  margin-bottom: var(--space-lg);
}

.cabinet-details summary::-webkit-details-marker {
  display: none;
}

.cabinet-details summary::before {
  content: '▸';
  display: inline-block;
  font-size: 0.9em;
  color: var(--color-sage-primary);
  transition: transform 0.2s ease;
}

.cabinet-details[open] summary::before {
  transform: rotate(90deg);
}

.cabinet-details summary:hover {
  color: var(--color-sage-dark);
}

.cabinet-details summary:focus-visible {
  outline: 2px solid var(--color-sage-primary);
  outline-offset: 2px;
}

.cabinet-details summary h3 {
  margin: 0;
  font-size: var(--font-size-h3);
  display: inline;
}

.cabinet-details .cabinet-count {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
  font-weight: var(--font-weight-regular);
  margin-left: var(--space-sm);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .cabinet-gate {
    grid-template-columns: repeat(2, 1fr);
  }

  .cabinet-gate--compact {
    grid-template-columns: repeat(2, 1fr);
  }

  .cabinet-gate__card {
    padding: var(--space-md);
  }

  .cabinet-gate__card h3,
  .cabinet-gate__card h4 {
    font-size: var(--font-size-body);
  }
}

@media (max-width: 480px) {
  .cabinet-gate {
    grid-template-columns: 1fr;
  }

  .cabinet-gate--compact {
    grid-template-columns: 1fr;
  }

  .cabinet-gate--mini {
    grid-template-columns: 1fr;
    max-width: none;
  }
}

/* Smooth scroll for anchor links */
html {
  scroll-behavior: smooth;
}

.media-section-note {
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-600);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-xl);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-warmgray-100);
  border-left: 3px solid var(--color-sage-primary);
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

/* =========================
   Video Items (Media page)
   ========================= */

.video-item {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-warmgray-300);
}

.video-item:last-of-type {
  border-bottom: none;
}

.video-item h4 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  color: var(--color-warmgray-900);
}

.video-meta {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
  margin-bottom: var(--space-md);
  font-weight: var(--font-weight-medium);
}

/* Video container - constrained to prevent vertical domination */
.video-item video {
  width: 100%;
  max-width: 960px;
  border-radius: var(--border-radius-md);
  background: var(--color-warmgray-100);
}

/* Media video wrapper for additional containment */
.media-video {
  max-width: 960px;
  margin: var(--space-lg) 0;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background: var(--color-cream);
}

.media-video video {
  width: 100%;
  display: block;
}

.video-duration {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
  margin-top: var(--space-sm);
  margin-bottom: var(--space-sm);
}

/* ═══════════════════════════════════════════════════════════════
   DOCUMENT CONTENT (Governance docs)
   ═══════════════════════════════════════════════════════════════ */

.document {
  background-color: var(--color-sand-light);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  margin: var(--space-lg) 0;
}

.document__meta {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-500);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-warmgray-300);
}

.document__section {
  margin-bottom: var(--space-xl);
}

.document__section-title {
  font-size: var(--font-size-h3);
  color: var(--color-sage-dark);
  margin-top: 0;
  margin-bottom: var(--space-md);
}

/* Blockquote for emphasis */
.document blockquote {
  border-left: 3px solid var(--color-sage-primary);
  padding-left: var(--space-md);
  margin: var(--space-lg) 0;
  color: var(--color-warmgray-700);
  font-style: italic;
}

/* ═══════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-normal);
  /* Apple touch target minimum */
  min-height: 44px;
  min-width: 44px;
}

.btn--primary {
  background-color: var(--color-sage-primary);
  color: white;
}

.btn--primary:hover {
  background-color: var(--color-sage-dark);
  text-decoration: none;
  color: white;
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-sage-primary);
  border: 1px solid var(--color-sage-primary);
}

.btn--secondary:hover {
  background-color: var(--color-sand-light);
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-sage-dark);
  outline-offset: 2px;
}

/* ═══════════════════════════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════════════════════════ */

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

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--color-warmgray-500);
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-xl { margin-bottom: var(--space-xl); }

/* ═══════════════════════════════════════════════════════════════
   MOBILE RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
  .site-container {
    padding: 0 var(--space-md);
    padding-left: calc(var(--space-md) + var(--safe-area-left));
    padding-right: calc(var(--space-md) + var(--safe-area-right));
  }

  .site-header__inner {
    flex-wrap: wrap;
  }

  .site-nav {
    display: none;
    position: fixed;
    top: calc(var(--header-height) + var(--safe-area-top));
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding: var(--space-xl) var(--space-lg);
    padding-left: calc(var(--space-lg) + var(--safe-area-left));
    padding-right: calc(var(--space-lg) + var(--safe-area-right));
    background-color: var(--color-cream);
    overflow-y: auto;
    z-index: 99;
  }

  .site-nav--open {
    display: flex;
  }

  .site-nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: var(--space-md);
    border-radius: 0;
  }

  .site-nav__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .hero {
    padding: var(--space-xl) 0;
  }

  .hero__title {
    font-size: 28px;
  }

  .hero__subtitle {
    font-size: var(--font-size-body);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .document {
    padding: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .site-container {
    padding: 0 var(--space-sm);
    padding-left: calc(var(--space-sm) + var(--safe-area-left));
    padding-right: calc(var(--space-sm) + var(--safe-area-right));
  }

  .card {
    padding: var(--space-md);
  }

  .document {
    padding: var(--space-md);
    border-radius: var(--border-radius-md);
  }
}

/* ═══════════════════════════════════════════════════════════════
   iOS SPECIFIC
   ═══════════════════════════════════════════════════════════════ */

@supports (-webkit-touch-callout: none) {
  /* iOS Safari specific styles */
  body {
    /* Prevent elastic scrolling on iOS */
    overscroll-behavior: none;
  }

  /* Ensure tap highlight is visible but subtle */
  a, button {
    -webkit-tap-highlight-color: rgba(44, 165, 141, 0.2);
  }
}

/* ═══════════════════════════════════════════════════════════════
   VISUAL GALLERY
   ═══════════════════════════════════════════════════════════════ */

/* Batch Section Cards */
.section--batch {
  background: white;
  border: 1px solid var(--color-warmgray-200);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
  transition: box-shadow 0.2s ease;
}

.section--batch:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.section--batch h2 {
  margin-top: 0;
  color: var(--color-warmgray-900);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section--batch h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.2em;
  background: var(--color-sage-primary);
  border-radius: 2px;
}

.batch-meta {
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-600);
  margin-bottom: var(--space-md);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.batch-role {
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-700);
  font-style: italic;
  margin-top: var(--space-xs);
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.batch-count {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-warmgray-100);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-caption);
}

/* Gallery Toggle Button */
.gallery-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-sage-primary);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px;
  text-decoration: none;
}

.gallery-toggle:hover {
  background: var(--color-sage-700);
  text-decoration: none;
  color: white;
}

.gallery-toggle:focus-visible {
  outline: 2px solid var(--color-sage-dark);
  outline-offset: 2px;
}

.gallery-toggle__icon {
  display: inline-block;
  transition: transform 0.3s ease;
  font-size: 0.8em;
}

.gallery-toggle[aria-expanded="true"] .gallery-toggle__icon {
  transform: rotate(180deg);
}

.visual-gallery {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  background: var(--color-sand-light);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-warmgray-300);
  overflow: hidden;
  transition: opacity 0.3s ease;
}

.visual-gallery--collapsed {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  margin-top: 0;
  opacity: 0;
  border: none;
}

.visual-gallery--expanded {
  opacity: 1;
}

.gallery-note {
  font-size: var(--font-size-caption);
  color: var(--color-warmgray-600);
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-warmgray-100);
  border-left: 3px solid var(--color-sage-primary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.gallery-grid img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-warmgray-300);
  transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.3s ease;
  cursor: pointer;
  background: var(--color-warmgray-100);
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.gallery-grid img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  z-index: 1;
  position: relative;
}

.gallery-grid img:focus-visible {
  outline: 3px solid var(--color-sage-primary);
  outline-offset: 2px;
}

.placeholder-text {
  color: var(--color-warmgray-600);
  font-size: var(--font-size-body-sm);
  padding: var(--space-lg);
  text-align: center;
  line-height: var(--line-height-relaxed);
}

.placeholder-text a {
  color: var(--color-sage-primary);
  text-decoration: none;
  word-break: break-all;
  font-family: var(--font-mono);
  font-size: var(--font-size-caption);
}

.placeholder-text a:hover {
  text-decoration: underline;
}

.gallery-more {
  grid-column: 1 / -1;
  text-align: center;
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-600);
  font-style: italic;
  padding: var(--space-md) 0;
}

.gallery-note-inline {
  grid-column: 1 / -1;
  text-align: center;
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-700);
  padding: var(--space-sm) 0;
  margin-top: var(--space-sm);
}

.gallery-note-inline a {
  color: var(--color-sage-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

.gallery-note-inline a:hover {
  text-decoration: underline;
}

/* Load More Button */
.load-more-btn {
  grid-column: 1 / -1;
  margin: var(--space-lg) auto;
  padding: var(--space-sm) var(--space-xl);
  background: var(--color-sage-primary);
  color: white;
  border: none;
  border-radius: var(--border-radius-md);
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(122, 155, 118, 0.3);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.load-more-btn:hover {
  background: var(--color-sage-700);
  box-shadow: 0 4px 16px rgba(122, 155, 118, 0.4);
  transform: translateY(-2px);
}

.load-more-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(122, 155, 118, 0.2);
}

.load-more-btn:disabled {
  background: var(--color-sage-primary);
  cursor: wait;
  opacity: 0.85;
}

.load-more-btn:focus-visible {
  outline: 3px solid var(--color-sage-dark);
  outline-offset: 2px;
}

/* Loading Spinner */
.spinner {
  display: inline-block;
  width: 1em;
  height: 1em;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Gallery completion message */
.gallery-complete {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-lg);
  background: linear-gradient(135deg, rgba(122, 155, 118, 0.1) 0%, rgba(122, 155, 118, 0.05) 100%);
  border: 1px solid rgba(122, 155, 118, 0.2);
  border-radius: var(--border-radius-md);
  color: var(--color-sage-700);
  font-weight: var(--font-weight-medium);
  animation: slideUp 0.4s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Lightbox Modal */
.lightbox {
  display: none;
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.lightbox__content {
  max-width: 85%;
  max-height: 85vh;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox__image {
  width: 100%;
  height: auto;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--border-radius-md);
  animation: scaleIn 0.25s ease;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.lightbox__image.loading {
  opacity: 0.5;
}

.lightbox__loader {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.lightbox__close {
  position: absolute;
  top: -50px;
  right: -10px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  font-size: 28px;
  font-weight: 300;
  cursor: pointer;
  padding: var(--space-sm) var(--space-md);
  transition: all 0.2s ease;
  line-height: 1;
  border-radius: var(--border-radius-sm);
  min-width: 48px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox__close:focus-visible {
  outline: 2px solid white;
  outline-offset: 2px;
}

/* Lightbox Navigation */
.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  font-size: 36px;
  font-weight: 300;
  cursor: pointer;
  padding: var(--space-lg) var(--space-md);
  transition: all 0.2s ease;
  border-radius: var(--border-radius-sm);
  min-width: 56px;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox__nav:focus-visible {
  outline: 2px solid white;
  outline-offset: 2px;
}

.lightbox__nav--prev {
  left: -80px;
}

.lightbox__nav--next {
  right: -80px;
}

.lightbox__nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.lightbox__counter {
  position: absolute;
  top: -50px;
  left: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-medium);
}

.lightbox__caption {
  color: rgba(255, 255, 255, 0.9);
  text-align: center;
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-body-sm);
  margin-top: var(--space-md);
  max-width: 600px;
  line-height: var(--line-height-relaxed);
}

/* Mobile responsive gallery */
@media (max-width: 768px) {
  .section--batch {
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
  }

  .batch-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--space-sm);
  }

  .lightbox__content {
    max-width: 95%;
    max-height: 90vh;
  }

  .lightbox__close {
    font-size: 24px;
    top: -45px;
    right: 0;
    min-width: 44px;
    min-height: 44px;
  }

  .lightbox__nav {
    position: fixed;
    top: auto;
    bottom: 20px;
    transform: none;
    padding: var(--space-md);
    min-width: 60px;
    min-height: 60px;
    font-size: 28px;
    background: rgba(255, 255, 255, 0.15);
  }

  .lightbox__nav--prev {
    left: 20px;
  }

  .lightbox__nav--next {
    right: 20px;
  }

  .lightbox__counter {
    position: fixed;
    top: auto;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--border-radius-sm);
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xs);
  }

  .visual-gallery {
    padding: var(--space-md);
  }
}

/* ═══════════════════════════════════════════════════════════════
   ORIENTATION RIBBON
   Cookie-free navigation hint that fades after 12 seconds
   ═══════════════════════════════════════════════════════════════ */

.orientation-ribbon {
  background: var(--color-sand-light);
  border-bottom: 1px solid var(--color-warmgray-300);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  font-size: var(--font-size-body-sm);
  color: var(--color-warmgray-700);
  animation: ribbon-fade 12s ease-out forwards;
}

.orientation-ribbon p {
  margin: 0;
  color: var(--color-warmgray-700);
}

.orientation-ribbon a {
  color: var(--color-sage-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
}

.orientation-ribbon a:hover {
  color: var(--color-sage-dark);
  text-decoration: underline;
}

@keyframes ribbon-fade {
  0% {
    opacity: 1;
    max-height: 100px;
    padding: var(--space-md) var(--space-lg);
    border-bottom-width: 1px;
  }
  70% {
    opacity: 1;
    max-height: 100px;
    padding: var(--space-md) var(--space-lg);
    border-bottom-width: 1px;
  }
  100% {
    opacity: 0;
    max-height: 0;
    padding: 0 var(--space-lg);
    border-bottom-width: 0;
    overflow: hidden;
  }
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .orientation-ribbon {
    animation: none;
  }
}

/* Mobile responsive ribbon */
@media (max-width: 480px) {
  .orientation-ribbon {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-caption);
  }
}

/* ═══════════════════════════════════════════════════════════════
   PRINT STYLES
   ═══════════════════════════════════════════════════════════════ */

@media print {
  .site-header,
  .site-footer,
  .site-nav,
  .orientation-ribbon {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .card,
  .document {
    background: white;
    border: 1px solid #ccc;
    box-shadow: none;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  a[href]::after {
    content: ' (' attr(href) ')';
    font-size: 0.8em;
  }

  /* Transcript print styles - clean reading surface */
  audio,
  .audio-item audio {
    display: none;
  }

  .transcript-details {
    display: block;
  }

  .transcript-details summary {
    display: none;
  }

  .transcript-content {
    max-width: 100%;
    max-height: none;
    overflow: visible;
    background: none;
    padding: 0;
    margin: var(--space-md) 0;
    page-break-inside: avoid;
  }
}

/* ═══════════════════════════════════════════════════════════════
   EDITORIAL REVIEW PATTERNS
   Media item context, boundary, and related materials
   ═══════════════════════════════════════════════════════════════ */

/* Context sentence - one-sentence orientation */
.media-item__context {
  font-size: 0.95rem;
  color: var(--color-warmgray-700);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

/* Boundary statement - epistemic limits */
.media-item__boundary {
  font-size: 0.85rem;
  color: var(--color-warmgray-500);
  font-style: italic;
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

/* Related materials cross-links */
.media-related {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-warmgray-300);
  font-size: 0.85rem;
}

.media-related p {
  margin-bottom: var(--space-xs);
  color: var(--color-warmgray-700);
}

.media-related ul {
  margin: 0;
  padding-left: var(--space-lg);
}

.media-related li {
  margin-bottom: var(--space-xs);
}

.media-related a {
  color: var(--color-sage-primary);
  text-decoration: none;
}

.media-related a:hover {
  color: var(--color-sage-dark);
  text-decoration: underline;
}

/* Reduced motion - transcript toggle */
@media (prefers-reduced-motion: reduce) {
  .transcript summary::before,
  .media-transcript__toggle::before {
    transition: none;
  }
}