/* Mobile first. Basis: 375 px Breite, Ziele mindestens 44 px, Navigation unten. */

:root {
  --navy: #13303f;
  --navy-soft: #1d4456;
  --gold: #b8962a;
  --bg: #eef2f5;
  --surface: #ffffff;
  --fg: #14212b;
  --muted: #5b6b78;
  --rule: #d9e1e7;
  --open-bg: #fdecec;
  --open-fg: #a4262c;
  --paid-bg: #e3f5ea;
  --paid-fg: #1b6b3a;
  --focus: #1f6fb5;
  color-scheme: light;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 0 calc(84px + env(safe-area-inset-bottom, 0px));
  overflow-x: hidden;
}

h1 { font-size: 22px; margin: 16px 0 12px; text-wrap: balance; }
h2 { font-size: 18px; margin: 0 0 6px; }

a { color: var(--navy); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* Kopfzeile */
.topbar {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
  margin: 0 calc(-1 * max(16px, env(safe-area-inset-left, 0px))) 0;
  padding: 0 max(16px, env(safe-area-inset-right, 0px)) 0 max(16px, env(safe-area-inset-left, 0px));
  background: var(--navy);
  color: #fff;
}
/* Logo liegt auf weißer Fläche, weil die Originalfarben auf dem dunklen Balken nicht lesbar wären. */
.brand-logo {
  display: inline-flex;
  align-items: center;
  background: #fff;
  border-radius: 8px;
  padding: 4px 8px;
}
.brand-logo img { display: block; height: 36px; width: auto; }
.login-logo { text-align: center; margin: 0 0 8px; }
.login-logo img { max-width: 100%; height: auto; }
.topbar-action {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.content { max-width: 720px; margin: 0 auto; padding-top: 4px; }

/* Untere Navigation */
.bottomnav {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--rule);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.bottomnav a {
  flex: 1;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  border-top: 3px solid transparent;
}
.bottomnav a[aria-current="page"] {
  color: var(--navy);
  border-top-color: var(--gold);
}

/* Formulare und Buttons */
.filters {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 10px;
  align-items: end;
  margin-bottom: 12px;
}
.filters .btn { grid-column: 1 / -1; }
label { display: grid; gap: 4px; font-size: 14px; color: var(--muted); }
input, select {
  min-height: 44px;
  width: 100%;
  padding: 8px 12px;
  font: inherit;
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 8px;
}
.stack { display: grid; gap: 14px; }
.btn {
  min-height: 44px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid var(--navy);
  background: var(--surface);
  color: var(--navy);
  cursor: pointer;
}
.btn-primary { background: var(--navy); color: #fff; }

/* Segment-Filter */
.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 12px;
}
.segmented a {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}
.segmented a[aria-current="true"] { background: var(--navy); color: #fff; }

/* Summen */
.kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.kpi {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 14px;
  display: grid;
  gap: 4px;
  min-width: 0;
}
.kpi-label { font-size: 13px; color: var(--muted); }
.kpi-value { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.kpi-open .kpi-value { color: var(--open-fg); }

/* Karten */
.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 14px;
  min-width: 0;
}
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.card-name { font-weight: 700; overflow-wrap: anywhere; }
.card-title { font-size: 17px; margin: 4px 0 6px; }
.card-body { margin: 0; overflow-wrap: anywhere; }
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.pill {
  flex: none;
  font-size: 13px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
}
.pill-open { background: var(--open-bg); color: var(--open-fg); }
.pill-paid { background: var(--paid-bg); color: var(--paid-fg); }

.pay-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 12px;
}

.check { display: flex; align-items: flex-start; gap: 10px; color: var(--fg); font-size: 16px; }
.check input { width: 22px; min-height: 22px; margin-top: 2px; flex: none; }

.row-2 { display: grid; grid-template-columns: 1fr 2fr; gap: 12px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.card-actions { margin: 10px 0 0; }
.card-actions .btn { width: 100%; }

.panel {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 12px;
}
.panel summary { min-height: 44px; display: flex; align-items: center; font-weight: 700; color: var(--navy); cursor: pointer; }
.panel[open] summary { margin-bottom: 8px; }

.empty, .alert {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 14px;
  color: var(--muted);
}
.alert { color: var(--open-fg); border-color: var(--open-fg); }

/* Stammblatt */
.sheet {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 12px;
  margin: 0;
  padding: 4px 14px;
}
.sheet dt { font-size: 13px; color: var(--muted); margin-top: 12px; }
.sheet dd { margin: 2px 0 0; overflow-wrap: anywhere; }

/* Anmeldung */
.login-body { background: var(--bg); }
.login {
  max-width: 420px;
  margin: 12vh auto 0;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 24px 20px;
}
.login .stack { margin-top: 8px; }

/* Ab Tablet: mehr Platz, Karten in zwei Spalten */
@media (min-width: 720px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .pay-form { grid-template-columns: 1fr auto; align-items: center; }
  .filters { grid-template-columns: 180px 1fr auto; }
  .filters .btn { grid-column: auto; }
}

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