:root {
  --bg: #0f1419;
  --bg-elev: #1a2028;
  --bg-card: #232b35;
  --border: #2d3744;
  --text: #e8eaed;
  --text-dim: #9ba3ae;
  --accent: #5eb1ff;
  --accent-hover: #8cc6ff;
  --tag: #2d4a63;
  --tag-text: #b5d4ee;
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

header {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-row {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.brand {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

.brand .dot { color: var(--accent); }

nav {
  display: flex;
  gap: 16px;
  margin-left: auto;
  font-size: 14px;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.intro {
  margin-bottom: 24px;
}

.intro h1 {
  font-size: 28px;
  margin-bottom: 8px;
  font-weight: 600;
}

.intro p {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 720px;
}

.intro .version-line {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 6px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: 0.3px;
}

.controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  align-items: center;
}

.search-box {
  flex: 1;
  min-width: 240px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 15px;
  outline: none;
}

.search-box:focus { border-color: var(--accent); }

.lang-toggle {
  display: flex;
  gap: 4px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
}

.lang-toggle button {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 500;
}

.lang-toggle button.active {
  background: var(--accent);
  color: #fff;
}

.lang-toggle button:hover:not(.active) {
  color: var(--text);
}

.category-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.cat-chip {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}

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

.cat-chip.active {
  background: var(--tag);
  color: var(--tag-text);
  border-color: var(--tag);
}

.stats {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.term-list {
  display: grid;
  gap: 12px;
}

.term-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  cursor: pointer;
  transition: border-color 0.15s;
}

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

.term-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
}

.term-title {
  font-size: 17px;
  font-weight: 600;
}

.term-subtitle {
  color: var(--text-dim);
  font-size: 14px;
}

.term-cat {
  background: var(--tag);
  color: var(--tag-text);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
}

.term-body {
  display: none;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.term-card.open .term-body { display: block; }

.translations {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.trans-item {
  background: var(--bg-elev);
  padding: 8px 12px;
  border-radius: 6px;
}

.trans-lang {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.trans-text {
  font-size: 16px;
}

.trans-text.rtl { direction: rtl; text-align: right; }

.trans-pending {
  color: var(--text-dim);
  font-style: italic;
  font-size: 14px;
}

.definitions {
  margin-bottom: 14px;
}

.def-block {
  margin-bottom: 8px;
}

.def-lang {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.def-text {
  font-size: 14px;
  color: var(--text);
}

.sources {
  font-size: 12px;
  color: var(--text-dim);
}

.sources strong { color: var(--text); font-weight: 600; }

.empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-dim);
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}

footer a { margin: 0 8px; }

.page-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.page-content h1 {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 16px;
}

.page-content h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 28px 0 10px;
  color: var(--text);
}

.page-content p {
  margin-bottom: 12px;
  color: var(--text);
}

.page-content ul {
  margin: 0 0 16px 20px;
  color: var(--text);
}

.page-content li {
  margin-bottom: 6px;
}

.page-content .source-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
}

.page-content .source-block .src-name {
  font-weight: 600;
  margin-bottom: 4px;
}

.page-content .source-block .src-meta {
  font-size: 13px;
  color: var(--text-dim);
}

.disclaimer {
  background: #2d2419;
  border: 1px solid #5a4220;
  color: #f0d59a;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}

.contribute-section {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.contribute-section h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
}

.contribute-section > p {
  color: var(--text-dim);
  font-size: 14px;
  max-width: 720px;
}

.contribute-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin: 20px 0;
}

.contribute-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  transition: border-color 0.15s;
}

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

.contribute-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
}

.contribute-card p {
  font-size: 13px;
  color: var(--text-dim);
  margin: 0;
}

.contribute-btn {
  display: inline-block;
  background: var(--accent);
  color: #0f1419;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s;
  margin-top: 4px;
}

.contribute-btn:hover {
  background: var(--accent-hover);
  color: #0f1419;
  text-decoration: none;
}

.contribute-note {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 10px;
  margin-bottom: 0;
}

@media (max-width: 600px) {
  .header-row { gap: 12px; }
  nav { width: 100%; margin-left: 0; order: 3; justify-content: center; }
  .intro h1 { font-size: 22px; }
  main { padding: 24px 16px 48px; }
}