:root {
  --bg: #fbfaf7; --fg: #1d1d1b; --muted: #5d5a54; --line: #dedad2; --accent: #1f3b73; --accent-fg: #fff;
  --panel: #fff; --warn-bg: #fff6e0; --err-bg: #fdecea; --code: #8a2c18;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #17181a; --fg: #e8e6e1; --muted: #a9a59c; --line: #34363a; --accent: #8fb0ef; --accent-fg: #0f1520;
          --panel: #1f2023; --warn-bg: #3a3017; --err-bg: #3d1f1c; --code: #f0a487; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 Georgia, "Times New Roman", serif; }
header, main, footer { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
header h1 { margin: 20px 0 0; font-size: 1.8rem; }
.sub { margin: 4px 0 16px; color: var(--muted); }
a { color: var(--accent); }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.88em; color: var(--code); overflow-wrap: anywhere; }
h2 { font-size: 1.2rem; margin: 24px 0 6px; }
h3 { font-size: 1rem; margin: 14px 0 4px; }
details.intro { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 8px 14px; margin-bottom: 16px; }
details.intro summary { cursor: pointer; font-weight: bold; }
.search { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; }
.line { display: flex; gap: 6px; margin-bottom: 6px; }
.line input { flex: 1; min-width: 0; font: 15px ui-monospace, Menlo, Consolas, monospace; padding: 8px; border: 1px solid var(--line); border-radius: 4px; background: var(--bg); color: var(--fg); }
.line .remove { width: 36px; }
button { font: inherit; font-size: 0.95rem; padding: 6px 12px; border: 1px solid var(--line); border-radius: 4px; background: var(--bg); color: var(--fg); cursor: pointer; }
button.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
button:disabled { opacity: 0.5; cursor: default; }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin-top: 8px; }
fieldset.mode { border: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 14px; }
fieldset.mode legend { float: left; margin-right: 8px; font-weight: bold; }
.span input { vertical-align: middle; width: 120px; }
.hint, .note { color: var(--muted); font-size: 0.9rem; margin: 6px 0; }
.msg { padding: 8px 12px; border-radius: 4px; margin-top: 10px; }
.msg.error { background: var(--err-bg); }
.msg.warn { background: var(--warn-bg); }
#status { margin-top: 10px; font-style: italic; }
#preview { margin-top: 14px; }
details.pv { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 6px 12px; margin-bottom: 8px; }
details.pv summary { cursor: pointer; overflow-wrap: anywhere; }
.pv-tools { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.pv-tools input, .pv-tools select { font: inherit; font-size: 0.9rem; padding: 4px 6px; border: 1px solid var(--line); border-radius: 4px; background: var(--bg); color: var(--fg); }
.pv-tools input { flex: 1; min-width: 160px; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { border-bottom: 1px solid var(--line); padding: 4px 8px; text-align: left; vertical-align: top; }
th { cursor: pointer; white-space: nowrap; user-select: none; }
th.asc::after { content: " ▲"; } th.desc::after { content: " ▼"; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td[dir=rtl] { text-align: right; font-family: "Amiri", "Scheherazade New", "Geeza Pro", "Noto Naskh Arabic", serif; font-size: 1.05rem; }
.table-scroll { overflow-x: auto; }
.pager { display: flex; gap: 10px; align-items: center; margin: 6px 0; font-size: 0.9rem; }
.chart { width: 100%; min-height: 420px; margin-top: 18px; }
.chart.tall { min-height: 520px; }
.caption { font-size: 0.85rem; color: var(--muted); cursor: pointer; border-left: 3px solid var(--line); padding-left: 8px; overflow-wrap: anywhere; }
.caption.collapsed { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.downloads { margin-top: 14px; }
footer { margin-top: 40px; padding-bottom: 30px; font-size: 0.9rem; color: var(--muted); border-top: 1px solid var(--line); }
.logos { display: flex; flex-wrap: wrap; gap: 8px; }
.logos img { height: 50px; width: auto; background: #fff; border-radius: 3px; }
.version { font-size: 0.8rem; }
@media (max-width: 600px) {
  header h1 { font-size: 1.4rem; }
  .chart { min-height: 340px; }
  .controls { gap: 8px; }
  #search { width: 100%; }
}