:root {
  --bg: #f5f2ea; --card: #fffdf8; --ink: #1c2331; --muted: #667085; --line: #ddd6c6;
  --fly: #d9622b; --bed: #27345f; --night: #e6e1d3; --good: #2f7d4f; --warn: #a15c00; --bad: #a8321f;
  --chip: #efe9da; --link: #1d5fa8;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c; --card: #1a1f2a; --ink: #e8e6df; --muted: #9aa3b5; --line: #2c3342;
    --fly: #f08a4b; --bed: #7f93d8; --night: #3a4568; --good: #6fcf97; --warn: #e0a84a; --bad: #ef8573;
    --chip: #252c3a; --link: #8ab8f0;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
.top, main, footer { max-width: 900px; margin: 0 auto; padding: 0 20px; }
.top { padding-top: 36px; }
h1 { font: 700 2.4rem/1.1 "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font: 700 1.3rem/1.25 "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; margin: 0 0 6px; text-wrap: balance; }
.tag { margin: 0 0 24px; color: var(--muted); max-width: 60ch; font-size: 1.05rem; }
a { color: var(--link); }

.search { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.fld { display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem; color: var(--muted); flex: 1 1 130px; min-width: 0; }
.fld:nth-of-type(3) { flex: 2 1 200px; }
input, select, button { font: inherit; color: var(--ink); }
.fld input, .fld select, .prefs input[type=time], .prefs input[type=number] {
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px; width: 100%; min-width: 0; }
#from, #to { text-transform: uppercase; font-weight: 600; letter-spacing: 0.04em; }
.fld select { padding: 2px 4px; border: 0; background: none; color: var(--muted); font-size: 0.8rem; margin: -2px 0 0 -4px; width: auto; }
#swap { background: none; border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px; cursor: pointer; }
.go { background: var(--ink); color: var(--bg); border: 0; border-radius: 8px; padding: 10px 18px; font-weight: 600; cursor: pointer; flex: 1 1 150px; }
.go:hover, #swap:hover, .morebtn:hover { filter: brightness(1.15); }
:focus-visible { outline: 2px solid var(--fly); outline-offset: 2px; }
.prefs { flex-basis: 100%; font-size: 0.9rem; color: var(--muted); }
.prefs summary { cursor: pointer; width: fit-content; }
.prefgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-top: 12px; }
.prefgrid label { display: flex; flex-direction: column; gap: 4px; }
.prefgrid .chk { flex-direction: row; align-items: center; gap: 8px; grid-column: 1 / -1; }
.prefgrid small { font-size: 0.75rem; }

.status { margin: 28px 0 14px; }
.sub { margin: 0 0 4px; color: var(--muted); font-size: 0.92rem; }
.empty { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 0 0 8px; }

.results { display: grid; gap: 6px; }
.cols, .opt > summary { display: grid; align-items: baseline; gap: 4px 12px;
  grid-template-columns: minmax(8em, 1.6fr) repeat(5, minmax(3.6em, 1fr)) minmax(6em, 1.5fr) 1em; }
.cols { padding: 0 14px 4px; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 600; }
.cols small { text-transform: none; letter-spacing: 0; font-weight: 400; }
.cols::after { content: ""; }
.opts { display: grid; gap: 6px; }
.opt { background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
.opt > summary { list-style: none; cursor: pointer; padding: 10px 14px; font-variant-numeric: tabular-nums; }
.opt > summary::-webkit-details-marker { display: none; }
.opt > summary::after { content: "›"; color: var(--muted); font-size: 1.2rem; line-height: 1; transition: transform .15s; justify-self: end; }
.opt[open] > summary::after { transform: rotate(90deg); }
.opt > summary:hover { background: var(--chip); border-radius: 10px; }
.c.via b { font-size: 1.02rem; }
.c.via small, .c.al { color: var(--muted); font-size: 0.85rem; }
.c.al { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.c.miss { color: var(--bad); font-weight: 600; }
.why { grid-column: 1 / -1; font-size: 0.8rem; color: var(--bad); }
.opt.near { border-style: dashed; }
.more { padding: 0 14px 14px; border-top: 1px solid var(--line); }
.alts { font-size: 0.85rem; color: var(--muted); margin: 12px 0 0; }
.nearby { margin-top: 26px; }
.nearby h3 { font: 700 1.1rem/1.25 "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; margin: 0 0 4px; }
.nearby .sub { margin-bottom: 10px; }

.slider { gap: 2px !important; }
.sl-top { display: flex; justify-content: space-between; gap: 8px; color: var(--ink); }
.sl-top output { font-weight: 600; font-variant-numeric: tabular-nums; }
.slider input[type=range] { width: 100%; accent-color: var(--fly); margin: 4px 0 0; }
.prefrow { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; margin-top: 14px; }
.prefrow select { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 5px 8px; }
.prefrow .chk { display: flex; align-items: center; gap: 8px; }
.linkbtn { background: none; border: 0; padding: 0; color: var(--link); text-decoration: underline; cursor: pointer; font-size: 0.9rem; }

.strip { position: relative; height: 46px; margin: 12px 0 14px; }
.seg { position: absolute; top: 0; height: 24px; border-radius: 4px; overflow: hidden; white-space: nowrap;
  font-size: 0.72rem; line-height: 24px; text-align: center; color: #fff; }
.seg.night { background: var(--night); border-radius: 0; height: 24px; }
.seg.fly { background: var(--fly); }
.seg.bed { background: var(--bed); }
@media (prefers-color-scheme: dark) { .seg.bed { color: #12151c; } }
.tick { position: absolute; top: 28px; transform: translateX(-50%); font-size: 0.7rem; color: var(--muted);
  font-variant-numeric: tabular-nums; }
.tick:first-of-type { transform: none; }
.tick:last-of-type { transform: translateX(-100%); }

.legs { display: grid; gap: 8px; }
.leg { display: grid; grid-template-columns: 6.2em minmax(0, 15em) minmax(0, 1fr); gap: 2px 14px; align-items: baseline; }
.when { color: var(--muted); font-size: 0.85rem; }
.route { font-variant-numeric: tabular-nums; }
.route sup { color: var(--muted); font-size: 0.7em; margin-left: 2px; }
.info { color: var(--muted); font-size: 0.88rem; }
.leg.night .route b { font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.chip { background: var(--chip); border-radius: 999px; padding: 2px 10px; font-size: 0.8rem; }
.chip.good { color: var(--good); }
.morebtn { margin: 14px 0 0; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 9px 16px; cursor: pointer; }

.hubs, .about { margin-top: 44px; }
.hubs p, .about p { color: var(--muted); max-width: 68ch; }
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th { text-align: left; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 600; }
th, td { padding: 8px 12px 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
td:first-child, td:nth-child(3) { white-space: nowrap; }
.note { color: var(--muted); min-width: 220px; }
.access { border-radius: 999px; padding: 1px 9px; background: var(--chip); font-size: 0.8rem; }
.access.train { color: var(--warn); }
footer { color: var(--muted); font-size: 0.8rem; padding-top: 40px; padding-bottom: 40px; }

@media (max-width: 640px) {
  .cols { display: none; }
  .opt > summary { grid-template-columns: repeat(5, minmax(0, 1fr)) 0.8em; gap: 2px 6px; padding: 8px 10px;
    font-size: 0.92rem; }
  .opt > summary .c { white-space: nowrap; }
  .c.via { grid-column: 1 / 3; grid-row: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .c.al { grid-column: 3 / 6; grid-row: 1; text-align: right; font-size: 0.78rem; }
  .opt > summary::after { grid-column: 6; grid-row: 1; }
  .c[data-l]:not(.al)::before { content: attr(data-l); display: block; font-size: 0.62rem; text-transform: uppercase;
    letter-spacing: 0.05em; color: var(--muted); font-weight: 400; }
  .leg { grid-template-columns: 1fr; }
  .when { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
  h1 { font-size: 2rem; }
  .seg.bed { font-size: 0; }
  .more { padding: 0 12px 12px; }
}
.links { white-space: nowrap; }
.links .book { font-weight: 600; }