/* 7841.de – Zählwerk-Look: Betongrau, Petrol-Walzen, Signalgelb, Kobalt */
:root {
  --bg: #e6ebee;
  --card: #f8fafb;
  --ink: #12242b;
  --muted: #53666f;
  --line: #b9c6cc;
  --drum: #0e3a45;
  --drum-ink: #f2f6f7;
  --signal: #f4b400;
  --signal-ink: #1b1500;
  --cobalt: #1f4fd8;
  --cobalt-ink: #ffffff;
  --link: #1a45bd;
  --we: #cfd8dc;
  --prime: #fbe08a;
  --err: #a31d1d;
  --display: "Bahnschrift", "DIN Alternate", "Roboto Condensed", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --text: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --digits: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1a1f;
    --card: #14262d;
    --ink: #e4edf0;
    --muted: #9db1b9;
    --line: #2c4650;
    --drum: #05222a;
    --drum-ink: #f2f6f7;
    --link: #8fb0ff;
    --we: #2a4048;
    --prime: #6b5400;
    --err: #ff8a8a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 1.0625rem/1.6 var(--text);
}
a { color: var(--link); text-underline-offset: .15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--card); padding: .5rem 1rem; z-index: 10; }
.muted { color: var(--muted); }

/* Kopf und Fuß */
.top {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem 2rem;
  max-width: 64rem; margin: 0 auto; padding: 1rem 1.25rem 0;
}
.brand {
  font: 700 1.6rem/1 var(--display); color: var(--ink); text-decoration: none; letter-spacing: .01em;
}
.brand span { color: var(--muted); font-weight: 400; }
.top nav { display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; }
.top nav a {
  color: var(--ink); text-decoration: none; padding: .3rem 0; border-bottom: 4px solid transparent;
  font-family: var(--display); font-size: 1.1rem;
}
.top nav a:hover { border-bottom-color: var(--line); }
.top nav a.on.nav-zahlen { border-bottom-color: var(--signal); }
.top nav a.on.nav-kurz { border-bottom-color: var(--cobalt); }
.top nav a.on.nav-brueckentage { border-bottom-color: var(--drum); }
@media (prefers-color-scheme: dark) { .top nav a.on.nav-brueckentage { border-bottom-color: #5fb3c6; } }

main { max-width: 64rem; margin: 0 auto; padding: 1.5rem 1.25rem 3rem; }
.foot {
  max-width: 64rem; margin: 0 auto; padding: 1.5rem 1.25rem 2.5rem;
  display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; border-top: 1px solid var(--line); color: var(--muted);
}
.foot a { color: var(--muted); }

/* Kilometerzähler */
.odo {
  display: inline-flex; gap: .1em; vertical-align: middle;
  font-family: var(--digits); font-weight: 700; line-height: 1;
  font-size: min(3.2rem, calc(86vw / (var(--n, 4) * 0.95)));
}
.odo.big { font-size: min(6rem, calc(86vw / (var(--n, 4) * 0.95))); }
.odo.small { font-size: min(2.4rem, calc(60vw / (var(--n, 4) * 0.95))); }
.odo i {
  font-style: normal; display: grid; place-items: center; position: relative; overflow: hidden;
  width: .78em; height: 1.25em; border-radius: .08em;
  background: var(--drum); color: var(--drum-ink);
  box-shadow: inset 0 .5em .45em -.4em rgba(0, 0, 0, .55), inset 0 -.5em .45em -.4em rgba(0, 0, 0, .55);
}
.odo i::after {
  content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1px; background: rgba(255, 255, 255, .15);
}

/* Überschriften */
h1, h2 { font-family: var(--display); line-height: 1.15; margin: 0 0 .6em; }
h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); }
h2 { font-size: 1.45rem; margin-top: 2rem; }
.hero h1, .page h1 { margin-bottom: .4em; }
.hero { padding: 1rem 0 2rem; }
.lead { font-size: 1.2rem; max-width: 40rem; }
.page { max-width: 52rem; }
.narrow { max-width: 38rem; }
.prose p { max-width: 38rem; }

/* Formulare */
label { display: block; margin: .9rem 0 .25rem; font-weight: 600; }
input[type=text], input[type=password], select {
  width: 100%; font: inherit; color: inherit; background: var(--card);
  border: 1px solid var(--muted); border-radius: 3px; padding: .6rem .75rem;
}
button, .btn {
  display: inline-block; font: 600 1rem var(--text); cursor: pointer; text-decoration: none;
  background: var(--cobalt); color: var(--cobalt-ink); border: 0; border-radius: 3px; padding: .65rem 1.1rem;
}
button:hover, .btn:hover { filter: brightness(1.12); }
button.danger { background: var(--err); color: #fff; padding: .3rem .7rem; font-size: .9rem; }
.numform { display: flex; flex-wrap: wrap; gap: .6rem; max-width: 34rem; margin: 1rem 0; }
.numform input { flex: 1 1 12rem; width: auto; font-family: var(--digits); font-size: 1.2rem; }
.shortform button { margin-top: 1rem; }
.pick { display: grid; grid-template-columns: 1fr 8rem auto; gap: .25rem .75rem; align-items: end; max-width: 36rem; margin: 1rem 0; }
.pick label { margin: 0; grid-row: 1; }
.pick select { grid-row: 2; }
.pick button { grid-row: 2; }
@media (max-width: 30rem) {
  .pick { grid-template-columns: 1fr 1fr; }
  .pick button { grid-column: 1 / -1; grid-row: auto; }
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.err { color: var(--err); font-weight: 600; margin: 0 0 .5rem; }

/* Startseite: drei Werkzeuge */
.tools { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); }
.tool { background: var(--card); border: 1px solid var(--line); border-left-width: 6px; padding: 1.1rem 1.25rem 1.25rem; }
.tool h2 { margin-top: 0; font-size: 1.3rem; }
.tool p { margin: .5rem 0; }
.t-zahlen { border-left-color: var(--signal); }
.t-kurz { border-left-color: var(--cobalt); }
.t-brueckentage { border-left-color: var(--drum); }
@media (prefers-color-scheme: dark) { .t-brueckentage { border-left-color: #5fb3c6; } }
.daynum { text-decoration: none; }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: .5rem 0; padding: 0; }
.chips span { background: var(--card); border: 1px solid var(--line); border-radius: 99px; padding: .1rem .7rem; font-size: .92rem; }

/* Steckbrief */
.facts { margin: 1.5rem 0; border-top: 1px solid var(--line); }
.facts > div { display: grid; grid-template-columns: 11rem 1fr; gap: 1rem; padding: .6rem 0; border-bottom: 1px solid var(--line); }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.facts dd.wrap { word-break: break-all; }
@media (max-width: 34rem) { .facts > div { grid-template-columns: 1fr; gap: .1rem; } }
.divs { font-family: var(--digits); font-size: .95rem; overflow-wrap: anywhere; }
.near { display: flex; flex-wrap: wrap; gap: .5rem; }
.near a { background: var(--card); border: 1px solid var(--line); padding: .35rem .8rem; text-decoration: none; border-radius: 3px; }
.near a:hover { border-color: var(--link); }

/* Zahlenübersicht */
.numgrid { list-style: none; margin: 1rem 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(3.6rem, 1fr)); gap: 4px; }
.numgrid a {
  display: block; text-align: center; padding: .35rem 0; background: var(--card); border: 1px solid var(--line);
  color: var(--ink); text-decoration: none; font-family: var(--digits); font-size: .95rem;
}
.numgrid a.prime { background: var(--prime); border-color: var(--signal); }
.numgrid a:hover { outline: 2px solid var(--link); }
.pager { display: flex; gap: 1rem; margin: 1rem 0; }
.ranges p { display: flex; flex-wrap: wrap; gap: .3rem .8rem; font-family: var(--digits); font-size: .9rem; }
.legend { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem 1.2rem; color: var(--muted); font-size: .95rem; }
.swatch { display: inline-block; width: 1rem; height: 1rem; border-radius: 2px; margin-right: .3rem; vertical-align: -.15em; }
.swatch.prime { background: var(--prime); border: 1px solid var(--signal); }
.swatch.hol { background: var(--signal); }
.swatch.vac { background: var(--cobalt); }
.swatch.we { background: var(--we); }

/* Brückentage */
.wins { list-style: none; padding: 0; margin: 0; }
.wins li { margin: 0 0 1.25rem; }
.wins p { margin: 0 0 .4rem; }
.strip { display: flex; flex-wrap: wrap; gap: 2px; margin: .4rem 0; }
.strip span {
  display: grid; justify-items: center; align-content: center; width: 2.1rem; height: 2.6rem; border-radius: 2px;
  line-height: 1.1; font-variant-numeric: tabular-nums;
}
.strip b { font-size: .95rem; }
.strip small { font-size: .68rem; opacity: .85; }
.strip .we { background: var(--we); color: var(--muted); }
.strip .hol { background: var(--signal); color: var(--signal-ink); }
.strip .vac { background: var(--cobalt); color: var(--cobalt-ink); }
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: .5rem .75rem .5rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; }
td.wrap { word-break: break-all; }

/* Kurzlinks */
.result { background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--cobalt); padding: 1rem 1.25rem; margin: 1rem 0 2rem; }
.result p { margin: .4rem 0; }
.shorturl { font: 700 1.3rem var(--digits); overflow-wrap: anywhere; }
.notes { color: var(--muted); padding-left: 1.2rem; }
code { font-family: var(--digits); font-size: .92em; background: var(--card); padding: .1em .35em; border: 1px solid var(--line); border-radius: 3px; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }