:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2430; --muted: #6b7280; --line: #e3e6ea;
  --primary: #1d4ed8; --ok: #15803d; --warn: #b45309; --bad: #b91c1c;
  --ok-bg: #dcfce7; --warn-bg: #fef3c7; --bad-bg: #fee2e2;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--primary); }
header { background: #111827; color: #fff; padding: .6rem 1rem; display: flex; gap: 1rem;
  align-items: center; flex-wrap: wrap; }
header a { color: #fff; text-decoration: none; }
header .brand { font-weight: 700; margin-right: auto; }
header nav a { margin-left: .9rem; opacity: .85; }
header nav a:hover { opacity: 1; }
main { max-width: 1000px; margin: 0 auto; padding: 1rem; }
h1 { font-size: 1.5rem; margin: .4rem 0 1rem; }
h2 { font-size: 1.15rem; margin: 1.6rem 0 .6rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 1rem; margin-bottom: 1rem; }
.flash { background: #dbeafe; border: 1px solid #93c5fd; border-radius: 8px;
  padding: .6rem .9rem; margin-bottom: 1rem; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--line);
  vertical-align: top; }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
tr.past { opacity: .55; }
.scroll { overflow-x: auto; }
input, select, textarea { font: inherit; padding: .45rem .6rem; border: 1px solid #cbd5e1;
  border-radius: 6px; width: 100%; max-width: 420px; background: #fff; }
textarea { min-height: 5rem; }
label { display: block; margin: .7rem 0 .2rem; font-weight: 600; font-size: .92rem; }
label.inline { display: inline-flex; gap: .4rem; align-items: center; font-weight: 400; }
label.inline input { width: auto; }
button, .btn { font: inherit; padding: .45rem .9rem; border-radius: 6px; border: 1px solid var(--primary);
  background: var(--primary); color: #fff; cursor: pointer; text-decoration: none;
  display: inline-block; line-height: 1.3; }
button.sec, .btn.sec { background: #fff; color: var(--primary); }
button.danger { background: #fff; color: var(--bad); border-color: var(--bad); }
button.sm, .btn.sm { padding: .2rem .55rem; font-size: .85rem; }
form.inline { display: inline; }
.row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.tile { display: block; background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 1.2rem; text-decoration: none; color: inherit; }
.tile:hover { border-color: var(--primary); }
.tile b { display: block; font-size: 1.15rem; margin-bottom: .3rem; }
.tag { display: inline-block; padding: .1rem .5rem; border-radius: 999px; font-size: .78rem;
  font-weight: 600; }
.tag.besetzt { background: var(--ok-bg); color: var(--ok); }
.tag.teilweise { background: var(--warn-bg); color: var(--warn); }
.tag.offen { background: var(--bad-bg); color: var(--bad); }
.tag.heim { background: #e0e7ff; color: #3730a3; }
.tag.grau { background: #e5e7eb; color: #374151; }
.slot { display: inline-block; padding: .25rem .6rem; margin: .15rem .25rem .15rem 0;
  border: 1px solid var(--line); border-radius: 6px; background: #f9fafb; text-decoration: none;
  color: inherit; }
a.slot:hover { border-color: var(--primary); }
.slot.leer { color: var(--muted); border-style: dashed; }
.wunsch { border-left: 4px solid var(--warn); }
.big { font-size: 1.4rem; font-weight: 700; }
.stats { display: flex; flex-wrap: wrap; gap: .5rem 1.2rem; }
.qr { max-width: 240px; width: 100%; }
@media (max-width: 640px) {
  th, td { padding: .4rem .3rem; font-size: .93rem; }
  main { padding: .6rem; }
}
@media print {
  header, .noprint { display: none !important; }
  body { background: #fff; }
  .card { border: none; }
}