/* ── Reset & variables ───────────────────────────────────────────────────────── */

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

:root {
  --bg:            #1a1f27;
  --bg-2:          #242c38;
  --bg-3:          #2c3a4a;
  --surface:       #1f2835;
  --border:        #3a4a5c;
  --text:          #e8ecf0;
  --text-muted:    #7a90a8;
  --accent:        #e67e22;
  --accent-dim:    #b35c0e;
  --azhoran:       #8e44ad;
  --azhoran-dim:   #6c3483;
  --highlight:     rgba(230, 126, 34, 0.18);
  --dim:           rgba(255,255,255,0.10);
  --sidebar-w:     260px;
  --font-ui:       'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-ipa:      'Segoe UI', 'Noto Sans', 'Arial Unicode MS', sans-serif;
  font-size: 15px;
}

html, body { height: 100%; background: var(--bg); color: var(--text); font-family: var(--font-ui); }

/* ── App layout ──────────────────────────────────────────────────────────────── */

#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────────── */

.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar h1 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  padding: 18px 16px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.mode-toggle {
  display: flex;
  gap: 6px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.mode-btn {
  flex: 1;
  padding: 6px 4px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-3);
  color: var(--text-muted);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.15s;
}
.mode-btn:hover  { border-color: var(--accent); color: var(--text); }
.mode-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }

.category-buttons {
  display: flex;
  gap: 6px;
  padding: 8px 12px;
  flex-shrink: 0;
}

.cat-btn {
  flex: 1;
  padding: 5px 4px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-3);
  color: var(--text-muted);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.15s;
}
.cat-btn:hover  { border-color: var(--text-muted); color: var(--text); }
.cat-btn.active { background: var(--bg-3); border-color: var(--accent); color: var(--accent); font-weight: 600; }

.section-label {
  padding: 10px 14px 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  flex-shrink: 0;
}

.lang-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px 12px;
}
.lang-list::-webkit-scrollbar { width: 4px; }
.lang-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.lang-group-label {
  padding: 10px 6px 4px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
}

.lang-btn {
  display: flex;
  flex-direction: column;
  width: 100%;
  padding: 7px 10px;
  margin-bottom: 2px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: var(--text);
  font-size: 0.82rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.12s;
}
.lang-btn:hover  { background: var(--bg-3); border-color: var(--border); }
.lang-btn.active { background: var(--highlight); border-color: var(--accent); }

.lang-btn-name   { font-weight: 500; }
.lang-btn-native { font-size: 0.75rem; color: var(--text-muted); }

.lang-btn.is-conlang .lang-btn-name::after {
  content: ' ✦';
  color: var(--azhoran);
  font-size: 0.7rem;
}
.lang-btn.lang-ipa { font-weight: 700; color: var(--accent); }

/* ── Main area ───────────────────────────────────────────────────────────────── */

.main-area {
  flex: 1;
  min-width: 0;
  overflow: auto;
  background: var(--bg);
}
.main-area::-webkit-scrollbar { width: 6px; height: 6px; }
.main-area::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.chart-area {
  padding: 20px;
}

.desc-area {
  height: 180px;
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  overflow-y: auto;
  padding: 16px 20px;
  position: sticky;
  bottom: 0;
}

/* ── IPA Atlas table ─────────────────────────────────────────────────────────── */

.chart-scroll { overflow-x: auto; }

.phoneme-table {
  border-collapse: collapse;
  width: 100%;
  font-family: var(--font-ipa);
}

.phoneme-table th {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  padding: 6px 4px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.phoneme-table th:first-child {
  text-align: left;
  font-size: 0.7rem;
  width: 120px;
}

.phoneme-table td {
  text-align: center;
  border: 1px solid var(--border);
  padding: 4px 6px;
  min-width: 48px;
  vertical-align: middle;
}

/* ── Phoneme tokens in atlas ────────────────────────────────────────────────── */

.phoneme-token {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  margin: 2px;
  padding: 4px 6px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.12s;
  min-width: 32px;
}
.phoneme-token:hover { background: var(--bg-3); border-color: var(--accent); }
.phoneme-token:active { transform: scale(0.93); }

.ipa-symbol {
  font-size: 1.3rem;
  line-height: 1.2;
  color: var(--text);
}

.rom-label {
  font-size: 0.62rem;
  color: var(--accent);
  margin-top: 1px;
}

.phoneme-token.is-affricate .ipa-symbol { font-size: 1rem; }

.phoneme-token.lang-active { }
.phoneme-token.lang-dim .ipa-symbol { color: rgba(255,255,255,0.22); }
.phoneme-token.lang-dim:hover .ipa-symbol { color: var(--text-muted); }

/* ── Description panel ───────────────────────────────────────────────────────── */

.description-panel { display: flex; flex-direction: column; gap: 8px; }

.hint { color: var(--text-muted); font-style: italic; }

.desc-symbol {
  font-family: var(--font-ipa);
  font-size: 2.8rem;
  line-height: 1;
  color: var(--accent);
  float: left;
  margin-right: 16px;
}

.desc-name { font-size: 1rem; font-weight: 600; }

.audio-btn {
  padding: 4px 12px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: transparent;
  color: var(--accent);
  font-size: 0.8rem;
  cursor: pointer;
  width: fit-content;
}
.audio-btn:hover { background: var(--accent); color: #fff; }

.desc-lang-section { margin-top: 4px; }
.desc-label { color: var(--text-muted); font-size: 0.82rem; }

.native-script {
  font-size: 1.1rem;
  color: var(--text);
  direction: inherit;
}

.desc-examples { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 8px; }
.example-item  { font-size: 0.82rem; }
.example-word  { font-weight: 600; color: var(--text); }
.example-gloss { color: var(--text-muted); margin-left: 4px; }

.desc-absent { font-style: italic; color: var(--text-muted); font-size: 0.85rem; }

.audio-attr { font-size: 0.72rem; color: var(--text-muted); margin-top: 4px; }
.audio-attr a { color: var(--accent); }

/* ── Phonology view ───────────────────────────────────────────────────────────── */

.hint-block {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 200px;
  color: var(--text-muted);
  font-style: italic;
  font-size: 1rem;
}

.phonology-view {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.phon-header {
  padding-bottom: 16px;
  border-bottom: 2px solid var(--accent);
  margin-bottom: 8px;
}

.phon-name-row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.phon-name-row h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
}

.phon-native-name {
  font-size: 1.3rem;
  color: var(--text-muted);
}

.conlang-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 20px;
  background: var(--azhoran-dim);
  color: #e0c0f8;
  letter-spacing: 0.05em;
}

.phon-family {
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.phon-section {
  padding: 20px 0 0;
  border-top: 1px solid var(--border);
  margin-top: 20px;
}
.phon-section h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 14px;
}

/* Phoneme grid */
.phon-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.phon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 12px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 72px;
  transition: all 0.12s;
}
.phon-card.has-audio { cursor: pointer; }
.phon-card.has-audio:hover { border-color: var(--accent); background: var(--bg-3); }

.phon-ipa    { font-family: var(--font-ipa); font-size: 1.5rem; color: var(--text); }
.phon-rom    { font-size: 0.8rem; color: var(--accent); font-weight: 600; }
.phon-native { font-size: 1rem; color: var(--text-muted); }
.phon-example { font-size: 0.7rem; color: var(--text-muted); text-align: center; }
.phon-gloss { display: block; font-style: italic; }

/* Script section */
.script-section { }
.script-meta { font-size: 0.82rem; color: var(--accent); margin-bottom: 8px; }
.script-desc { font-size: 0.88rem; line-height: 1.6; color: var(--text); }

.char-table-details { margin-top: 12px; }
.char-table-details summary {
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 4px 0;
  list-style: none;
}
.char-table-details summary:hover { color: var(--text); }
.char-table-details summary::before { content: '▶ '; font-size: 0.65rem; }
.char-table-details[open] summary::before { content: '▼ '; }

.char-table {
  margin-top: 10px;
  border-collapse: collapse;
  width: 100%;
  font-size: 0.82rem;
}
.char-table th {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
}
.char-table td { padding: 5px 10px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.char-glyph { font-family: var(--font-ipa); font-size: 1.1rem; color: var(--accent); font-weight: 700; }

/* Features */
.feature-item { margin-bottom: 16px; }
.feature-item strong { display: block; color: var(--text); margin-bottom: 4px; font-size: 0.9rem; }
.feature-item p { font-size: 0.85rem; line-height: 1.65; color: var(--text-muted); }

/* Context (conlangs) */
.context-section p {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-muted);
  font-style: italic;
  border-left: 3px solid var(--azhoran);
  padding-left: 14px;
}

/* ── RTL text support ────────────────────────────────────────────────────────── */

.phon-native[lang="ar"], .native-script[lang="ar"] {
  direction: rtl;
  font-size: 1.3rem;
}

/* ── Responsive ──────────────────────────────────────────────────────────────── */

@media (max-width: 700px) {
  :root { --sidebar-w: 200px; }
  .chart-area { padding: 12px; }
  .phoneme-table th:first-child { width: 80px; }
  .phoneme-table th { font-size: 0.62rem; }
  .ipa-symbol { font-size: 1.05rem; }
}

@media (max-width: 520px) {
  #app { flex-direction: column; }
  .sidebar { width: 100%; min-width: 0; height: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  .lang-list { max-height: 120px; }
  .main-area { height: calc(100vh - 200px); }
}