:root {
  --bg: #f8fafc; --card: #ffffff; --text: #0f172a; --muted: #64748b;
  --border: #e2e8f0; --accent: #334155; --accent-text: #ffffff;
  --ok: #16a34a; --warn: #dc2626; --link: #1d4ed8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a; --card: #1e293b; --text: #e2e8f0; --muted: #94a3b8;
    --border: #334155; --accent: #cbd5e1; --accent-text: #0f172a;
    --ok: #4ade80; --warn: #f87171; --link: #93c5fd;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
a { color: var(--link); }
main { max-width: 760px; margin: 0 auto; padding: 16px; padding-bottom: calc(16px + env(safe-area-inset-bottom)); }
h1 { font-size: 22px; margin: 8px 0 16px; }
.top {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px 16px; padding-top: calc(12px + env(safe-area-inset-top));
  background: var(--card); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.who { font-size: 14px; color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.empty { color: var(--muted); }
.login { max-width: 360px; margin: 12vh auto 0; padding: 28px; }
.login h1 { margin-top: 0; }
label { display: block; font-size: 14px; color: var(--muted); margin: 14px 0 4px; }
input {
  width: 100%; padding: 12px; font-size: 16px; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px;
}
button {
  width: 100%; margin-top: 20px; padding: 12px; border: 0; border-radius: 8px;
  background: var(--accent); color: var(--accent-text); font-size: 16px; cursor: pointer;
}
.err { color: var(--warn); font-size: 14px; margin-top: 14px; }
.hint { color: var(--muted); font-size: 13px; margin: 16px 0 0; }

/* Phase 2: Admin */
h2 { font-size: 18px; margin: 24px 0 10px; }
.card + .card, .card + .actions, .list .card { margin-top: 10px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.pre { white-space: pre-line; }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 13px; }
.nowrap { white-space: nowrap; }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; border: 1px solid var(--border); background: var(--card); }
.flash.ok { border-color: var(--ok); }
.flash.err { border-color: var(--warn); color: var(--warn); }
.subnav { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.subnav a { padding: 6px 12px; border-radius: 999px; border: 1px solid var(--border); text-decoration: none; color: var(--text); font-size: 14px; }
.subnav a.on { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.btn { display: inline-block; padding: 8px 14px; border-radius: 8px; background: var(--accent); color: var(--accent-text); text-decoration: none; font-size: 15px; }
.btn.sm, button.sm { padding: 6px 12px; font-size: 14px; }
button.sm { width: auto; margin-top: 0; }
button.danger, .btn.danger { background: var(--warn); color: #fff; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
form.inline { display: inline; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.row { display: block; text-decoration: none; color: var(--text); }
.off { opacity: .6; }
.tag { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.tile { text-decoration: none; color: var(--text); text-align: center; }
.tile b { display: block; font-size: 28px; }
textarea, select {
  width: 100%; padding: 10px 12px; font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px;
}
select { padding: 12px; }
input[type=checkbox] { width: 20px; height: 20px; margin: 0 8px 0 0; vertical-align: middle; accent-color: var(--accent); }
input[type=file] { padding: 10px; }
label.check { display: flex; align-items: center; color: var(--text); font-size: 15px; margin: 8px 0; }
fieldset { border: 1px solid var(--border); border-radius: 10px; margin: 16px 0 0; padding: 8px 12px 12px; }
legend { font-size: 14px; color: var(--muted); padding: 0 6px; }
details summary { cursor: pointer; margin: 8px 0; }
.addrow { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 10px; }
.addrow input { flex: 1 1 180px; width: auto; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
@media (max-width: 480px) { .grid2 { grid-template-columns: 1fr; } }
.sechead { display: flex; gap: 8px; align-items: flex-start; }
.sechead form.grow { display: flex; flex-direction: column; gap: 6px; }
.sechead form.grow button { align-self: flex-start; }
.grow { flex: 1; min-width: 0; }
.num { font-weight: 700; color: var(--muted); padding-top: 10px; min-width: 18px; }
.arrows { display: flex; gap: 4px; flex-shrink: 0; }
.arrows button.sm { padding: 6px 10px; }
ol.items { list-style: none; padding: 0; margin: 12px 0 0; }
ol.items li { display: flex; gap: 8px; align-items: flex-start; padding: 10px 0; border-top: 1px solid var(--border); }
.danger-zone { margin-top: 24px; }
.okbox { border-color: var(--ok); }
.errbox { border-color: var(--warn); }
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th, .tbl td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.card { overflow-x: auto; }

/* Phase 3: Nutzeransicht */
.mainnav { display: flex; gap: 4px; padding: 8px 12px 0; background: var(--card); border-bottom: 1px solid var(--border); overflow-x: auto; }
.mainnav a { padding: 8px 12px 10px; text-decoration: none; color: var(--muted); font-size: 15px; border-bottom: 2px solid transparent; white-space: nowrap; }
.mainnav a.on { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
.runcard { margin-top: 10px; }
.runcard.ueberfaellig { border-color: var(--warn); border-left-width: 4px; }
.runhead { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.tag.bad { border-color: var(--warn); color: var(--warn); }
.tag.good { border-color: var(--ok); color: var(--ok); }
.badtext { color: var(--warn); }
.progress { height: 6px; border-radius: 3px; background: var(--border); overflow: hidden; margin: 8px 0 4px; }
.progress span { display: block; height: 100%; background: var(--ok); }
details.more { margin-top: 16px; }
.runtop { margin-bottom: 14px; }
.runtop h1 { margin-bottom: 4px; }
.statusline { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.runsec { margin-top: 12px; padding: 12px 14px; }
.runsec h2 { margin: 2px 0 4px; font-size: 17px; }
ul.checklist { list-style: none; margin: 0; padding: 0; }
ul.checklist li { border-top: 1px solid var(--border); padding: 12px 0; scroll-margin-top: 80px; }
ul.checklist li:first-child { border-top: 0; }
.checkform { display: flex; gap: 12px; align-items: flex-start; margin: 0; }
button.tick {
  flex-shrink: 0; width: 48px; height: 48px; margin: 0; padding: 0; border-radius: 12px;
  border: 2px solid var(--muted); background: var(--bg); display: grid; place-items: center;
  touch-action: manipulation; -webkit-tap-highlight-color: transparent;
}
button.tick svg { width: 30px; height: 30px; fill: none; stroke: transparent; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
button.tick:hover svg { stroke: var(--border); }
li.done button.tick { background: var(--ok); border-color: var(--ok); }
li.done button.tick svg { stroke: #fff; }
.ititle { font-size: 16px; font-weight: 500; padding-top: 2px; overflow-wrap: anywhere; }
li.done .ititle { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--muted); }
.who-done { color: var(--ok); margin-top: 2px; }
.comment { color: var(--text); font-style: italic; margin-top: 2px; }
details.desc, details.cmt { margin: 2px 0; }
details.desc summary, details.cmt summary { margin: 2px 0; }
details.cmt textarea { margin-top: 4px; font-size: 16px; }
.btn.ghost { background: transparent; color: var(--link); border: 1px solid var(--border); margin-top: 6px; }
.hist { padding: 6px 8px; }
@media (max-width: 480px) { .hide-s { display: none; } main { padding: 12px; } .tbl td, .tbl th { padding: 6px 4px; } }