app.css

/*
 * Shared stylesheet for the unified Human Language SPA (app.html).
 *
 * The colour palette is lifted from entities.html / properties.html so the
 * theme stays consistent with the pages that have already shipped. New tokens
 * (mode tabs, badges, IPA accents) are layered on top.
 */

:root {
  --background: #121212;
  --text: #E0E0E0;
  --neon: #00FF00;
  --neon-selected: #00FFFF;
  --header-bg: #222;
  --description-text: #A0A0A0;
  --watermark-color: #E0E0E0;
  --neon-shadow: rgba(0, 255, 0, 0.4);
  --neon-shadow-intense: rgba(0, 255, 0, 0.6);
  --rule: rgba(0, 255, 0, 0.25);
  --accent-bg: rgba(0, 255, 0, 0.08);
  --badge-entity: #2563eb;
  --badge-property: #ea7a14;
  --badge-ambiguous: #c0392b;
  --mode-tab-bg: rgba(0, 255, 0, 0.04);
  --mode-tab-bg-active: rgba(0, 255, 0, 0.18);
  color-scheme: dark;
}

[data-theme="light"] {
  --background: #FFFFFF;
  --text: #333333;
  --neon: #FF00FF;
  --neon-selected: #FF007F;
  --header-bg: #F0F0F0;
  --description-text: #666666;
  --watermark-color: #333333;
  --neon-shadow: rgba(255, 0, 255, 0.4);
  --neon-shadow-intense: rgba(255, 0, 255, 0.6);
  --rule: rgba(255, 0, 255, 0.25);
  --accent-bg: rgba(255, 0, 255, 0.08);
  --mode-tab-bg: rgba(255, 0, 255, 0.06);
  --mode-tab-bg-active: rgba(255, 0, 255, 0.18);
  color-scheme: light;
}

html, body {
  background-color: var(--background);
  height: 100%;
}
body {
  color: var(--text);
  font-family: 'Orbitron', sans-serif;
  margin: 0;
  padding: 0;
  position: relative;
}

a { color: var(--neon); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--neon-selected); text-decoration: underline; }

button {
  font-family: inherit;
}

/* Shell layout ------------------------------------------------------------ */

.app-wrapper {
  max-width: 1080px;
  margin: 0 auto;
  padding: 70px 20px 130px; /* header height + footer language switcher height */
  position: relative;
  min-height: 100vh;
  z-index: 2;
}

main { padding: 12px; }

/* Headings ---------------------------------------------------------------- */

h1, h2, h3 {
  text-shadow: 0 0 10px var(--neon);
  color: var(--neon);
  line-height: 1.1;
  margin: 0 0 20px;
}
h1 { font-size: 2.5rem; }
h2 { font-size: 1.5rem; color: var(--text); text-shadow: none; }
h3 { font-size: 1.15rem; color: var(--text); text-shadow: none; }
p {
  font-size: 1.1rem;
  line-height: 1.5;
  color: var(--description-text);
  margin: 0 0 1em;
}

/* Mode tab bar ------------------------------------------------------------ */

.mode-tabs {
  position: fixed;
  top: 0;
  left: 0;
  right: 60px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 10px 20px;
  background-color: var(--header-bg);
  z-index: 10;
  border-bottom: 1px solid var(--rule);
}
.mode-tabs button {
  background-color: var(--mode-tab-bg);
  border: 1px solid var(--rule);
  color: var(--text);
  font-size: 0.85rem;
  padding: 6px 10px;
  cursor: pointer;
  border-radius: 4px;
  text-transform: lowercase;
  letter-spacing: 0.05em;
  font-family: inherit;
}
.mode-tabs button:hover { border-color: var(--neon); }
.mode-tabs button.active {
  background-color: var(--mode-tab-bg-active);
  border-color: var(--neon);
  color: var(--neon);
}

/* Theme toggle ------------------------------------------------------------ */

.theme-toggle {
  position: fixed;
  top: 10px;
  right: 10px;
  background-color: var(--header-bg);
  border: 2px solid var(--neon);
  color: var(--text);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  border-radius: 4px;
  z-index: 11;
}

/* Language switcher (shared with entities.html / properties.html) --------- */

.language-switcher {
  position: fixed;
  bottom: 0;
  left: 20px;
  right: 20px;
  background-color: var(--header-bg);
  padding: 8px;
  text-align: center;
  overflow-x: auto;
  white-space: nowrap;
  z-index: 9;
  border-top: 1px solid var(--rule);
}
.language-switcher button {
  background-color: transparent;
  border: 1px solid var(--header-bg);
  color: var(--text);
  font-size: 1.2rem;
  padding: 6px;
  margin: 0 4px;
  cursor: pointer;
  border-radius: 4px;
}
.language-switcher button.selected {
  color: var(--neon-selected);
  border: 1px solid var(--neon-selected);
}
.language-switcher button.preferred:not(.selected) {
  text-decoration: underline;
  text-decoration-color: var(--neon);
  text-decoration-thickness: 1px;
}
.language-switcher button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Statement link styling (shared with entities.html) --------------------- */

.statement-link, .entity-info a, .crumb a {
  color: var(--neon);
  text-decoration: none;
  transition: color 0.2s ease;
}
.statement-link:hover, .entity-info a:hover, .crumb a:hover {
  color: var(--neon-selected);
  text-decoration: underline;
}

.entity-info {
  font-size: 0.9rem;
  color: var(--text);
  padding: 8px;
  margin: 20px 0 0;
  text-align: right;
}

/* Toolbar (per-mode tools row) -------------------------------------------- */

.toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 20px;
  padding: 8px 0;
  border-bottom: 1px solid var(--rule);
}
.toolbar input[type="text"],
.toolbar input[type="search"],
.toolbar select {
  background-color: var(--background);
  color: var(--text);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 6px 10px;
  font-family: inherit;
  font-size: 0.95rem;
  min-width: 0;
}
.toolbar input[type="text"]:focus,
.toolbar input[type="search"]:focus,
.toolbar select:focus {
  outline: 1px solid var(--neon);
  outline-offset: 0;
}
.toolbar button {
  background-color: var(--accent-bg);
  color: var(--text);
  border: 1px solid var(--rule);
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
}
.toolbar button:hover { border-color: var(--neon); color: var(--neon); }
.toolbar button.active { border-color: var(--neon); color: var(--neon); background-color: var(--mode-tab-bg-active); }
.toolbar label { font-size: 0.9rem; color: var(--description-text); }

/* Watermark --------------------------------------------------------------- */

.watermark {
  position: fixed;
  bottom: 60px;
  left: 30px;
  font-size: 5rem;
  color: var(--watermark-color);
  opacity: 0.08;
  pointer-events: none;
  text-transform: uppercase;
  font-weight: 700;
  z-index: 1;
}

/* Statement card (re-used by statements.jsx through CSS variables) ------- */

.statement-card {
  margin-bottom: 10px;
  padding: 10px;
  border: 1px solid var(--neon);
  border-radius: 4px;
  background-color: var(--accent-bg);
}

/* Inline tests panel ------------------------------------------------------ */

.tests-panel {
  margin-top: 24px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 12px 16px;
  background: var(--accent-bg);
}
.tests-panel summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--neon);
}
.tests-panel pre {
  max-height: 320px;
  overflow: auto;
  background: var(--background);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 8px 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Badges (for the transformer Q/P sequence) ------------------------------ */

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: white;
  margin: 2px 4px 2px 0;
}
.badge-entity { background-color: var(--badge-entity); }
.badge-property { background-color: var(--badge-property); }
.badge-ambiguous { background-color: var(--badge-ambiguous); }

/* Alphabet mode ----------------------------------------------------------- */

.alphabet-mode {
  display: grid;
  grid-template-rows: 1fr 1fr auto;
  height: calc(100vh - 200px);
  min-height: 480px;
  align-items: center;
  justify-items: center;
  text-align: center;
}
.alphabet-glyph {
  font-size: clamp(8rem, 50vmin, 24rem);
  line-height: 1;
  color: var(--neon);
  text-shadow: 0 0 30px var(--neon-shadow-intense);
  font-weight: 700;
  user-select: text;
}
.alphabet-glyph.lower { color: var(--neon-selected); text-shadow: 0 0 30px var(--neon-shadow); }
.alphabet-details {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
}
.alphabet-details .ipa {
  font-size: 1.5rem;
  color: var(--neon-selected);
  font-style: italic;
}
.alphabet-nav {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 12px;
}
.alphabet-nav button { padding: 8px 16px; }

/* Dictionary mode --------------------------------------------------------- */

.dictionary-result {
  margin-top: 20px;
  border-top: 1px solid var(--rule);
  padding-top: 16px;
}
.dictionary-headword {
  font-size: 2rem;
  color: var(--neon);
  margin-bottom: 4px;
}
.dictionary-pos {
  margin: 16px 0;
}
.dictionary-pos h3 { color: var(--neon-selected); margin-bottom: 8px; }
.dictionary-definition { margin: 6px 0 6px 18px; color: var(--text); }
.dictionary-example { color: var(--description-text); font-style: italic; margin-left: 32px; }
.dictionary-source {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-left: 8px;
  color: var(--description-text);
  border: 1px solid var(--rule);
  padding: 1px 6px;
  border-radius: 999px;
}

/* Ontology mode ----------------------------------------------------------- */

.ontology-node { margin: 6px 0; }
.ontology-node summary {
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 4px;
}
.ontology-node summary:hover { background-color: var(--accent-bg); }
.ontology-children { margin-left: 22px; border-left: 1px dashed var(--rule); padding-left: 12px; }
.ontology-cycle {
  font-size: 0.9rem;
  color: var(--description-text);
  font-style: italic;
  padding-left: 8px;
}
.ontology-node-id { font-size: 0.85rem; color: var(--description-text); margin-left: 8px; }

/* IPA accents ------------------------------------------------------------- */

.ipa-token {
  color: var(--neon-selected);
  font-family: 'Charis SIL', 'Doulos SIL', 'Gentium Plus', serif;
}
.ipa-missing {
  color: var(--description-text);
  font-style: italic;
}

/* Responsive -------------------------------------------------------------- */

@media (max-width: 600px) {
  .app-wrapper { padding: 96px 12px 130px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.2rem; }
  .mode-tabs { right: 50px; padding: 8px 10px; }
  .mode-tabs button { font-size: 0.75rem; padding: 4px 8px; }
  .theme-toggle { top: 6px; right: 6px; width: 32px; height: 32px; font-size: 1.1rem; }
  .language-switcher { left: 10px; right: 10px; padding: 6px; }
  .language-switcher button { font-size: 1rem; padding: 4px; margin: 0 2px; }
  .watermark { font-size: 3rem; left: 10px; bottom: 60px; }
}

/* Keyframes (re-used by loading.jsx through CSS variables) ---------------- */

@keyframes pulse {
  0% { box-shadow: 0 0 30px var(--neon-shadow); }
  50% { box-shadow: 0 0 40px var(--neon-shadow-intense); }
  100% { box-shadow: 0 0 30px var(--neon-shadow); }
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInScale { from { opacity: 0; transform: scale(0.95);} to { opacity: 1; transform: scale(1);} }