:root {
  --bg: #0f1020;
  --panel: #1a1c33;
  --ink: #e8e8f0;
  --muted: #9aa0c0;
  --accent: #8b7bf0;
  --line: #2a2d4a;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  display: flex; justify-content: center; padding: 3rem 1rem;
}
main { width: 100%; max-width: 880px; }
h1 { margin: 0; font-size: 2rem; letter-spacing: .5px; }
.sub { color: var(--muted); margin: .25rem 0 2rem; }

.topbar { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: .25rem; }
.topbar nav { display: flex; gap: .25rem; }
.topbar nav a { color: var(--muted); text-decoration: none; padding: .4rem .8rem; border-radius: 8px; border: 1px solid transparent; }
.topbar nav a:hover { color: var(--ink); }
.topbar nav a.active { color: #fff; background: var(--panel); border-color: var(--line); }
.foot { color: var(--muted); font-size: .8rem; margin-top: 2.5rem; opacity: .7; }

.grid { display: flex; gap: .6rem; flex-wrap: wrap; }
.grid label { display: flex; flex-direction: column; gap: .25rem; color: var(--muted); font-size: .85rem; flex: 1; min-width: 9rem; }
.grid input { width: 100%; }
.loc { margin-top: .8rem; }
.loc summary { color: var(--muted); cursor: pointer; font-size: .85rem; margin-bottom: .6rem; }
.actions { display: flex; gap: .5rem; margin-top: 1rem; }
button.ghost { background: transparent; color: var(--accent); border: 1px solid var(--line); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .92em; }
td.retro { color: #ff9b6a; font-weight: 600; }
form { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 1.25rem; }
.row { display: flex; gap: .5rem; }
.row input[type=text] { flex: 1; }
input, select, button {
  font: inherit; padding: .6rem .75rem; border-radius: 8px;
  border: 1px solid var(--line); background: #12132a; color: var(--ink);
}
button { background: var(--accent); color: #fff; border: none; cursor: pointer; padding-inline: 1.25rem; }
button:hover { filter: brightness(1.1); }
.opts { display: flex; gap: 1.5rem; margin-top: .75rem; color: var(--muted); align-items: center; }
.opts input[type=number] { width: 5rem; }
.meta { color: var(--muted); margin: 1.5rem 0 .5rem; font-size: .9rem; }
.error { background: #3a1320; border: 1px solid #6a2233; color: #ffb3c0; padding: .75rem 1rem; border-radius: 8px; margin-top: 1.5rem; }
.empty { color: var(--muted); }
table { width: 100%; border-collapse: collapse; margin-top: .5rem; background: var(--panel); border-radius: 12px; overflow: hidden; }
th, td { text-align: left; padding: .6rem .8rem; border-bottom: 1px solid var(--line); }
th { color: var(--accent); font-size: .8rem; text-transform: uppercase; letter-spacing: .5px; }
tr:last-child td { border-bottom: none; }

.muted { color: var(--muted); }
.small { font-size: .85rem; }
.nowrap { white-space: nowrap; }
.sig-item { margin-top: 1.25rem; }
.sig-head { padding: .5rem 0; }
.samples { margin-top: .3rem; }
.samples td { font-size: .92rem; vertical-align: top; }
.samples td.nowrap { color: var(--accent); padding-right: 1rem; }
.facet { margin: .4rem 0 .6rem 1rem; }
.facet-head { color: var(--ink); font-size: .9rem; }
.samples td.sig { color: var(--accent); padding-right: 1rem; cursor: help; }