/* =========================================================
   Time-Aligned Transcript Player — styles
   Design language: a linguist's field archive — paper index
   cards, hairline rules, a tundra-teal + rust accent pair,
   serif for reading, mono for data (ids, times, labels).
   ========================================================= */

:root{
  /* Neutral scale -- white app background, near-black (not pure
     black) text, cool-neutral grays in between. */
  --bg:         #ffffff;
  --bg-subtle:  #f6f7f9;
  --bg-sunken:  #eef0f3;
  --ink:        #14181f;
  --ink-soft:   #4b5563;
  --muted:      #8b93a1;
  --paper:      var(--bg-subtle);
  --paper-deep: var(--bg-sunken);
  --card:       #ffffff;
  --line:       #e5e8ec;
  --line-soft:  #eef0f3;

  /* One confident accent -- a vivid teal -- rather than the old
     muted paper/teal pairing. Used deliberately sparingly. */
  --accent:      #0d9488;
  --accent-deep: #0f766e;
  --accent-tint: #ccfbf1;
  --rust:        #c2410c;
  --transcript-original: #1e5631;
  --rust-tint:   #ffedd5;
  --danger:      #b91c1c;

  --sans: "Noto Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --serif: var(--sans);  /* legacy alias -- one typeface site-wide now */
  --mono:  "Space Grotesk", "Noto Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;  /* legacy name -- this is now the UI-accent font for labels/kickers, not a monospace; content that may contain IPA never uses this variable */

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 2px rgba(20, 24, 31, 0.06), 0 1px 1px rgba(20, 24, 31, 0.04);
  --shadow-md: 0 8px 24px rgba(20, 24, 31, 0.08), 0 2px 6px rgba(20, 24, 31, 0.05);
  --shadow-lg: 0 20px 48px rgba(20, 24, 31, 0.14), 0 6px 16px rgba(20, 24, 31, 0.08);
}

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

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4{
  font-family: var(--serif);
  color: var(--accent-deep);
  margin: 0;
}

a{ color: var(--accent-deep); }

.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;
}

/* ---------------- Top navigation ---------------- */

.top-nav{
  background: var(--accent-deep);
  border-bottom: 1px solid var(--accent-deep);
}

.top-nav-inner{
  max-width: 1180px;
  margin: 0 auto;
  padding: 0.85rem 1.75rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.5rem;
}

.top-nav-brand{
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: var(--paper);
  opacity: 0.85;
  margin-right: auto;
}

.top-nav-tabs{
  display: flex;
  gap: 0.4rem;
}

.top-nav-tab{
  font-family: var(--serif);
  font-size: 0.92rem;
  color: var(--paper);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  opacity: 0.75;
  transition: background 120ms ease, opacity 120ms ease, border-color 120ms ease;
}

.top-nav-tab:hover{
  opacity: 1;
  border-color: rgba(238, 232, 215, 0.35);
}

.top-nav-tab:focus-visible{
  outline: 2px solid var(--paper);
  outline-offset: 2px;
}

.top-nav-tab.active{
  background: var(--paper);
  color: var(--accent-deep);
  opacity: 1;
  font-weight: 600;
}

/* ---------------- App views ---------------- */

.app-view[hidden]{ display: none; }

.placeholder{
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}

.hint{
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}


/* ---------------- Header ---------------- */

.site-header{
  background:
    linear-gradient(180deg, rgba(28,74,61,0.06), rgba(28,74,61,0) 70%),
    var(--paper);
  border-bottom: 1px solid var(--line);
}

.site-header-inner{
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.75rem 1.75rem 2.25rem;
}

.kicker{
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--rust);
  margin: 0 0 0.6rem;
}

.site-header h1{
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  max-width: 20ch;
}

.intro{
  max-width: 62ch;
  color: var(--ink-soft);
  margin: 0.9rem 0 0;
  font-size: 1.02rem;
}

/* ---------------- App shell ---------------- */

.app-shell{
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1.75rem 4rem;
}

.section-label{
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
  margin: 0 0 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

/* ---------------- Language selection ---------------- */

.lang-section{
  margin-bottom: 1.4rem;
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1.2rem;
}

.lang-nav{
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  flex: 3 1 0;
  min-width: 0;
}

.lang-nav[hidden]{
  display: none;
}

.lang-nav.lang-nav-collapsed{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  visibility: hidden;
  pointer-events: none;
}

.lang-nav-select{
  display: block;
  width: auto;
  min-width: 160px;
  max-width: 320px;
  flex: 1 1 200px;
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease;
}

.lang-nav-select:hover{
  background: var(--accent-deep);
  border-color: var(--accent-deep);
}

.lang-nav-select:focus-visible{
  outline: 2px solid var(--accent-deep);
  outline-offset: 2px;
}

.lang-nav-select[hidden]{
  display: none;
}

.language-button,
.gallery-language-button,
.references-language-button,
.home-language-button{
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.5rem 1.05rem;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease, color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}

.language-button:hover,
.gallery-language-button:hover,
.references-language-button:hover,
.home-language-button:hover{
  border-color: var(--accent);
  color: var(--ink);
  background: var(--accent-tint);
}

.language-button:focus-visible,
.gallery-language-button:focus-visible,
.references-language-button:focus-visible,
.home-language-button:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible,
.segment:focus-visible{
  outline: 2px solid var(--accent-deep);
  outline-offset: 2px;
}

.language-button.active,
.gallery-language-button.active,
.references-language-button.active,
.home-language-button.active{
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.info-icon-button{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  padding: 0;
  border-radius: 50%;
}

.field-hint{
  flex-basis: 100%;
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---------------- Status line ---------------- */

.status-line{
  min-height: 1.4em;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--accent-deep);
  margin: 0.9rem 0 1.6rem;
}

.status-line:empty{ margin: 0.4rem 0; }

.status-line.is-error{ color: var(--danger); }

/* ---------------- Gallery ---------------- */

.gallery-panel{
  margin-top: 1.6rem;
  margin-bottom: 2.2rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.gallery-filters{
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.2rem;
  margin-bottom: 1.5rem;
}

.filter-field{
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

@media (max-width: 480px){
  .filter-field-recording select{
    width: 100%;
    max-width: none;
  }
}

.filter-field label{
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--muted);
}

.filter-field select{
  font-family: var(--serif);
  font-size: 0.9rem;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--ink);
}

.filter-field-recording select{
  min-width: 200px;
  max-width: 280px;
}

.filter-field-keyword{
  flex: 1 1 220px;
  min-width: 0;
}

.filter-field-keyword input[type="search"]{
  width: 100%;
  font-family: var(--serif);
  font-size: 0.9rem;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--ink);
}

.filter-field-keyword input[type="search"]:focus-visible{
  border-color: var(--accent);
  outline: none;
}

.gallery-group{ margin-bottom: 1.6rem; }

.gallery-group-title{
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.8rem;
}

.gallery-grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 0.9rem;
}

.recording-card{
  display: flex;
  flex-direction: column;
  text-align: left;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  font-family: var(--serif);
  color: var(--ink);
  transition: border-color 120ms ease, transform 120ms ease;
}

.recording-card:hover{ border-color: var(--accent); }

.recording-card.active{
  border-color: var(--accent-deep);
  box-shadow: 0 0 0 1px var(--accent-deep);
}

.thumbnail-frame{
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--paper-deep);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.recording-card-audio .thumbnail-frame{
  aspect-ratio: auto;
  height: 64px;
}

.thumbnail-frame img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.thumbnail-placeholder{
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-align: center;
  padding: 0 0.5rem;
}

.audio-icon{
  width: 46px;
  height: 23px;
  color: var(--accent-deep);
}

.thumbnail-missing{
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  width: 100%;
  height: 100%;
  padding: 0.5rem;
  color: var(--danger);
  background: var(--rust-tint);
}

.missing-media-icon{
  width: 28px;
  height: 28px;
}

.thumbnail-missing-text{
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.01em;
  text-align: center;
  color: var(--danger);
}

.recording-card-missing{
  border-color: #d9b8a8;
}

.recording-card-missing:hover{
  border-color: var(--danger);
}

.recording-card-missing .card-title{
  color: var(--danger);
}

.card-title{
  font-size: 1rem;
  font-weight: 600;
  margin: 0.75rem 0.85rem 0.3rem;
}

.card-meta{
  margin: 0 0.85rem 0.85rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.card-meta-row{
  display: flex;
  gap: 0.35rem;
  padding: 0.1rem 0;
}

.card-meta-row .meta-key{
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  min-width: 4.6rem;
  flex-shrink: 0;
  padding-top: 0.15rem;
}

.card-meta-row .meta-value{ color: var(--ink); }

.recording-card-audio .card-title,
.recording-card-video .card-title{ }

/* ---------------- Player shell ---------------- */

.player-shell{
  margin-top: 1.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.player-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
}

@media (min-width: 900px){
  .player-grid{
    grid-template-columns: minmax(320px, 42%) 1fr;
    align-items: start;
  }
  .media-panel{
    position: sticky;
    top: 1.25rem;
  }
}

.media-panel, .transcript-panel{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.2rem 1.3rem;
}

.media-title-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--line-soft);
}

.media-title{
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
}

.close-recording-button{
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-soft);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

.close-recording-button:hover{
  background: var(--bg-subtle);
  color: var(--ink);
  border-color: var(--accent);
}

.media-container{
  background: var(--ink);
  border-radius: var(--radius-sm);
  overflow: hidden;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.media-container-audio{
  background: var(--bg-subtle);
  min-height: 0;
}

.media-container .placeholder{
  color: #cfd6d2;
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 2.2rem 1rem;
  margin: 0;
}

.media-player{
  display: block;
  width: 100%;
  max-height: 60vh;
  background: #000;
}

audio.media-player{
  height: 46px;
  max-height: none;
  background: var(--card);
  padding: 0.6rem 0.2rem;
}

.media-status{
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--danger);
  padding: 0.9rem 1rem;
  margin: 0;
}

.metadata-panel{
  margin-top: 1.3rem;
  padding: 1.1rem 1.25rem;
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
}

.metadata-heading{
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--mono);
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 0.9rem;
}

.metadata-list{
  margin: 0;
  display: grid;
  grid-template-columns: minmax(110px, auto) 1fr;
  column-gap: 1.1rem;
  row-gap: 0.6rem;
  font-size: 0.92rem;
  align-items: start;
}

.metadata-list[hidden]{
  display: none;
}

.metadata-list dt{
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-soft);
  padding-top: 0.1rem;
  white-space: nowrap;
}

.metadata-list dd{
  margin: 0;
  color: var(--ink);
}

.media-share-link{
  margin-top: 1.5rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line-soft);
}

.media-share-link[hidden]{
  display: none;
}

.media-share-label{
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--muted);
  margin: 0 0 0.4rem;
}

.media-share-row{
  display: flex;
  gap: 0.5rem;
}

.media-share-input{
  flex: 1;
  min-width: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
}

.media-share-copy{
  font-family: var(--serif);
  font-size: 0.82rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
  white-space: nowrap;
}

.media-share-copy:hover{
  border-color: var(--accent);
}

/* ---------------- Transcript panel ---------------- */

.transcript-toolbar{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1.1rem;
  padding-bottom: 0.9rem;
  margin-bottom: 0.9rem;
  border-bottom: 1px solid var(--line-soft);
}

.visibility-controls{
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.9rem;
}

.checkbox-field{
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
  cursor: pointer;
}

.checkbox-field input{ accent-color: var(--accent-deep); }

.search-row{
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: auto;
  flex: 1 1 240px;
  min-width: 0;
}

#searchInput{
  font-family: var(--serif);
  font-size: 0.9rem;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  flex: 1 1 auto;
  min-width: 0;
  width: auto;
}

.text-button{
  font-family: var(--mono);
  font-size: 0.76rem;
  background: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  padding: 0.4rem 0.6rem;
  cursor: pointer;
}

.text-button:hover{ border-color: var(--accent); }

.download-button{
  font-family: var(--mono);
  font-size: 0.78rem;
  background: var(--rust-tint);
  border: 1px solid var(--rust);
  color: var(--rust);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
  cursor: pointer;
  transition: background 120ms ease;
}

.download-button:hover:not(:disabled){ background: #ffe0bd; }

.download-button:disabled{
  opacity: 0.5;
  cursor: not-allowed;
  border-color: var(--line);
  background: var(--paper);
  color: var(--muted);
}

.timing-warning{
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--rust);
  background: var(--rust-tint);
  border: 1px solid #e3c4a4;
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.8rem;
  margin: 0 0 0.9rem;
}

.transcript-content{
  max-height: 68vh;
  overflow-y: auto;
  padding-right: 0.3rem;
}

.transcript-content .placeholder,
.no-results{
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  padding: 1rem 0.2rem;
  margin: 0;
}

.segment{
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  border-bottom: 1px solid var(--line-soft);
  padding: 0.7rem 0.6rem 0.7rem 1.05rem;
  cursor: pointer;
  font-family: var(--serif);
  color: var(--ink);
  border-radius: var(--radius-sm);
}

.segment:hover{ background: var(--bg-subtle); }

.segment.active{
  background: var(--bg-sunken);
  box-shadow: inset 3px 0 0 var(--accent-deep);
}

.segment-untimed{
  cursor: default;
  opacity: 0.68;
}

.segment-untimed:hover{ background: none; }

.segment-line{ display: block; }

.segment-id{
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.segment-speaker{
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--rust);
  margin-left: 0.4rem;
}

.segment-main{
  font-size: 1rem;
  margin-top: 0.3rem;
  color: var(--transcript-original);
}

.segment-gloss{
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-top: 0.4rem;
}

.segment-english{
  font-size: 0.95rem;
  color: var(--ink);
  margin-top: 0.4rem;
}

.segment-russian{
  font-size: 0.95rem;
  color: var(--ink);
  margin-top: 0.4rem;
}

.transcript-content.hide-gloss .segment-gloss{ display: none; }
.transcript-content.hide-english .segment-english{ display: none; }
.transcript-content.hide-russian .segment-russian{ display: none; }

/* ---------------- Image gallery (Gallery view) ---------------- */

.gallery-shell,
.references-shell,
.home-shell{
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1.75rem 4rem;
}

.image-gallery-panel{
  margin-top: 1.6rem;
}

.search-label{
  display: grid;
  gap: 0.4rem;
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-soft);
  width: min(100%, 340px);
}

.lang-section-search{
  flex: 1 1 220px;
  min-width: 0;
}

.lang-section-search .search-label{
  width: 100%;
}

.search-label input[type="search"]{
  font-family: var(--sans);
  font-size: 0.92rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.search-label input[type="search"]:focus-visible{
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-tint);
  outline: none;
}

.search-label input[type="search"]:disabled{
  cursor: not-allowed;
  opacity: 0.6;
}

.image-gallery{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.75rem 1.5rem;
  align-items: stretch;
}

.image-card{
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  min-width: 0;
  text-align: left;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: var(--card);
  color: var(--ink);
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  font-family: var(--sans);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 220ms ease, transform 220ms ease, border-color 220ms ease;
  animation: card-rise 480ms ease backwards;
}

.image-card:hover{
  border-color: var(--line);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.image-card:nth-of-type(1){ animation-delay: 0ms; }
.image-card:nth-of-type(2){ animation-delay: 40ms; }
.image-card:nth-of-type(3){ animation-delay: 80ms; }
.image-card:nth-of-type(4){ animation-delay: 120ms; }
.image-card:nth-of-type(5){ animation-delay: 160ms; }
.image-card:nth-of-type(6){ animation-delay: 200ms; }
.image-card:nth-of-type(7){ animation-delay: 240ms; }
.image-card:nth-of-type(8){ animation-delay: 280ms; }
.image-card:nth-of-type(n+9){ animation-delay: 320ms; }

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

.image-frame{
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--bg-sunken);
}

.image-frame img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 400ms ease;
}

.image-card:hover .image-frame img{
  transform: scale(1.04);
}

.image-placeholder{
  color: var(--muted);
  font-family: var(--sans);
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 0.8rem;
  text-align: center;
  padding: 0.75rem;
}

.image-title{
  margin: 0;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.image-credit{
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--muted);
}

.image-card-body{
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.1rem 1.2rem 1.3rem;
}

.image-card[hidden]{ display: none; }

.image-dialog{
  width: min(1100px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  border: 0;
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: var(--shadow-lg);
}

.image-dialog::backdrop{
  background: rgba(15, 20, 25, 0.6);
  backdrop-filter: blur(6px);
}

.dialog-close{
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  width: 2.4rem;
  height: 2.4rem;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
  box-shadow: var(--shadow-sm);
  transition: transform 150ms ease, background 150ms ease;
}

.dialog-close:hover{
  transform: scale(1.06);
  background: #ffffff;
}

.dialog-nav{
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.8rem;
  height: 2.8rem;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: transform 150ms ease, background 150ms ease;
}

.dialog-nav:hover{
  background: #ffffff;
  transform: translateY(-50%) scale(1.06);
}

.dialog-nav[hidden]{ display: none; }

.dialog-nav-prev{ left: 1rem; }
.dialog-nav-next{ right: 1rem; }

.dialog-body{
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
  max-height: calc(100vh - 2rem);
  background: var(--card);
}

.dialog-body img{
  width: 100%;
  height: 100%;
  max-height: calc(100vh - 2rem);
  object-fit: contain;
  background: var(--bg-sunken);
  transition: opacity 160ms ease;
}

.dialog-body img.is-changing{
  opacity: 0;
}

.dialog-metadata{
  padding: 3.6rem 2.4rem 1.5rem 1.75rem;
  overflow: auto;
  font-family: var(--sans);
}

.dialog-description{
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
  margin: 0 0 1.2rem;
}

.dialog-metadata dl{
  display: grid;
  grid-template-columns: minmax(95px, 0.4fr) 1fr;
  gap: 0.65rem 0.75rem;
  margin: 0;
  font-size: 0.9rem;
}

.dialog-metadata dt{
  font-family: var(--sans);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--muted);
}

.dialog-metadata dd{
  margin: 0;
  overflow-wrap: anywhere;
}

@media (max-width: 760px){
  .dialog-body{ grid-template-columns: 1fr; }
  .dialog-body img{ max-height: 55vh; }
}

/* ---------------- Bibliography & Texts (References view) ---------------- */

.bibliography-panel{
  margin-top: 1.6rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.resource-divider{
  border: none;
  border-top: 1px solid var(--line);
  margin: 1.8rem 0;
}

/* ---------------- Footer ---------------- */

.site-footer{
  background: var(--accent-deep);
  border-top: 1px solid var(--accent-deep);
  padding: 1.8rem 1.75rem 2.2rem;
  margin-top: 1rem;
}

.site-footer-inner{
  max-width: 1180px;
  margin: 0 auto;
  text-align: center;
}

.site-footer-title{
  font-family: var(--serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--paper);
  margin: 0 0 0.4rem;
}

.site-footer-downloads{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1rem;
  margin: 0.9rem 0 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.site-footer-downloads[hidden]{
  display: none;
}

.site-footer-download-link{
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--paper);
  opacity: 0.9;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer-download-link:hover{
  opacity: 1;
}

.site-footer-cite-button{
  margin-top: 1.1rem;
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-deep);
  background: #ffffff;
  border: 0;
  border-radius: 999px;
  padding: 0.55rem 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.site-footer-cite-button:hover{
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.citation-dialog{
  width: min(640px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  border: 0;
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: var(--shadow-lg);
}

.citation-dialog::backdrop{
  background: rgba(15, 20, 25, 0.5);
  backdrop-filter: blur(6px);
}

.citation-dialog-body{
  padding: 2.2rem 2.4rem;
  font-family: var(--sans);
}

.citation-dialog-body h2{
  font-size: 1.3rem;
  margin: 0 0 1.3rem;
  color: var(--ink);
}

.citation-list{
  display: grid;
  gap: 1.1rem;
}

.citation-entry{
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
}

.citation-style-label{
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-deep);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0 0 0.5rem;
}

.citation-text{
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--ink);
  margin: 0 0 0.8rem;
  overflow-wrap: anywhere;
}

.citation-text a{
  color: var(--accent-deep);
}

.citation-copy-button{
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 150ms ease;
}

.citation-copy-button:hover{
  border-color: var(--accent);
}

/* ---------------- Scrollbar (webkit) ---------------- */

.transcript-content::-webkit-scrollbar{ width: 8px; }
.transcript-content::-webkit-scrollbar-thumb{
  background: var(--line);
  border-radius: 4px;
}

/* ---------------- Home view ---------------- */

.map-section{
  margin-bottom: 1.6rem;
}

.siberia-map{
  width: 100%;
  height: 520px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-deep);
  overflow: hidden;
  position: relative;
}

.siberia-map .leaflet-popup-content{
  font-family: var(--serif);
  font-size: 0.9rem;
}

.siberia-map-fallback{
  height: 100%;
  overflow-y: auto;
  padding: 1.2rem 1.4rem;
}

.siberia-map-fallback .placeholder{
  margin: 0 0 0.9rem;
}

.map-legend{
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem;
  box-shadow: 0 2px 6px rgba(28, 42, 38, 0.15);
}

.map-legend-inline{
  display: inline-block;
  box-shadow: none;
  margin-bottom: 1rem;
}

.map-legend-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.map-legend-inline .map-legend-list{
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.3rem 1.1rem;
}

.map-legend-item{
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink);
  white-space: nowrap;
}

.map-legend-swatch{
  display: inline-block;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.25);
  flex-shrink: 0;
}

.settlement-fallback-list{
  list-style: none;
  margin: 0;
  padding: 0;
  columns: 2;
  column-gap: 2rem;
  font-size: 0.9rem;
}

.settlement-fallback-list li{
  padding: 0.25rem 0;
  break-inside: avoid;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.home-summary-panel{
  margin-top: 1.6rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.home-summary-content{
  display: grid;
  grid-template-columns: minmax(220px, 320px) 1fr;
  gap: 1.6rem;
  align-items: start;
}

.home-summary-content.info-mode{
  grid-template-columns: 1fr;
}

#homeLanguagePanel[hidden]{
  display: none;
}

@media (max-width: 760px){
  .home-summary-content{
    grid-template-columns: 1fr;
  }
}

.home-language-panel{
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.home-summary-figure{
  margin: 0;
}

.home-summary-image-frame{
  aspect-ratio: 4 / 3;
}

.home-summary-caption{
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: 0.5rem 0 0;
  line-height: 1.4;
}

.home-summary-credit{
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0;
}

.home-language-map{
  height: 260px;
}

.home-language-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.home-language-action-button{
  font-family: var(--serif);
  font-size: 0.85rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
  transition: border-color 120ms ease;
}

.home-language-action-button:hover{
  border-color: var(--accent);
}

.info-panel{
  padding-top: 1.4rem;
  margin-top: 1.6rem;
  margin-bottom: 1.6rem;
  border-top: 1px solid var(--line);
}

.info-panel[hidden]{
  display: none;
}

.markdown-content{
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4{
  margin: 1.1rem 0 0.5rem;
}

.markdown-content h1:first-child,
.markdown-content h2:first-child,
.markdown-content h3:first-child,
.markdown-content h4:first-child{
  margin-top: 0;
}

.markdown-content p{
  margin: 0 0 0.9rem;
}

.markdown-content ul,
.markdown-content ol{
  margin: 0 0 0.9rem;
  padding-left: 1.4rem;
}

.markdown-content li{
  margin-bottom: 0.3rem;
}

.markdown-content a{
  color: var(--accent-deep);
}