:root {
  --bg: #f7f7f5;
  --fg: #1d1d1b;
  --muted: #5f5f5a;
  --accent: #2f6f4f;
  --accent-fg: #ffffff;
  --card: #ffffff;
  --border: #d9d9d2;
  --warning-bg: #fff4d6;
  --warning-fg: #6b4e00;
  --error: #b3261e;
  --error-fg: #ffffff;
  --flash-bg: #e3f1e8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --fg: #ececea;
    --muted: #a3a39d;
    --accent: #6fbf8f;
    --accent-fg: #10140f;
    --card: #1f1f1d;
    --border: #3a3a36;
    --warning-bg: #3d3112;
    --warning-fg: #f3d58a;
    --error: #ff8a80;
    --error-fg: #10140f;
    --flash-bg: #1f3428;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

a { color: var(--accent); }

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.topbar nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.topbar a { color: var(--fg); text-decoration: none; }
.topbar-right { display: flex; gap: 0.75rem; align-items: center; margin-left: auto; flex-wrap: wrap; }
/* aktiver Haushalt, klar vom Nutzer getrennt (SPEC_UI_TOPBAR) */
.household { display: inline-flex; gap: 0.5rem; align-items: center; padding: 0.25rem 0.75rem; border: 1px solid var(--accent); border-radius: 999px; background: var(--card); }
.household-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.household-name { font-weight: 700; }
.brand { font-weight: 700; color: var(--accent) !important; }
/* Bedienelemente mindestens 44 px hoch (SPEC_UI_PWA) */
.topbar nav a, .topbar .brand, .actions > a { display: inline-flex; align-items: center; min-height: 44px; }

.container { max-width: 960px; margin: 0 auto; padding: 1.5rem 1rem; }
.container.narrow { max-width: 480px; }

h1 { font-size: 1.6rem; margin: 0 0 1rem; }
h2 { font-size: 1.2rem; margin: 1.5rem 0 0.75rem; }

.page-head { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; justify-content: space-between; }
.page-head h1 { margin: 0; }

.cards { list-style: none; padding: 0; display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; margin-bottom: 1rem; }
.card h2 { margin-top: 0; }
.card.overdue { border-color: var(--warning-fg); }

.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 0.85rem; margin: 0.25rem 0 0; }
.warning { color: var(--warning-fg); background: var(--warning-bg); padding: 0.25rem 0.5rem; border-radius: 4px; }
.callout { padding: 0.75rem 1rem; border-radius: 6px; margin: 1rem 0; }
.callout.warning { padding: 0.75rem 1rem; }
.flash { background: var(--flash-bg); padding: 0.6rem 1rem; border-radius: 6px; }
.tag { display: inline-block; border: 1px solid var(--border); border-radius: 999px; padding: 0 0.6rem; font-size: 0.85rem; }

.form { display: grid; gap: 1rem; }
.field { display: grid; gap: 0.25rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
label { font-weight: 600; }
input, select, textarea {
  font: inherit;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.7rem;
  min-height: 44px;
  width: 100%;
}
input[type="checkbox"] { width: 1.25rem; height: 1.25rem; min-height: auto; }
fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 1rem; display: grid; gap: 0.75rem; }
legend { font-weight: 600; padding: 0 0.25rem; }
.has-error input, .has-error select, .has-error textarea { border-color: var(--error); }
.field-error { color: var(--error); font-size: 0.9rem; margin: 0.25rem 0 0; }

button, .button {
  font: inherit;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-fg);
  text-decoration: none;
  cursor: pointer;
}
button.secondary, .button.secondary { background: transparent; color: var(--accent); }
button.danger { background: var(--error); border-color: var(--error); color: var(--error-fg); }
button.link { background: none; border: none; color: var(--accent); padding: 0; text-decoration: underline; }
button.link.danger { color: var(--error); }
/* Ladezustand (SPEC_UI_BUSY), gesetzt von app.js */
form[aria-busy="true"] { cursor: progress; }
button[aria-busy="true"] { gap: 0.5rem; cursor: progress; opacity: 0.85; }
button[aria-busy="true"]::before {
  content: "";
  flex: none;
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  button[aria-busy="true"]::before { animation-duration: 3s; }
}
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
form.inline { display: inline-flex; gap: 0.5rem; align-items: center; }
form.inline select { width: auto; }
.danger-zone { border-color: var(--error); }

.table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; }
.table th, .table td { text-align: left; padding: 0.5rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table td.num, .table th.num { text-align: right; font-variant-numeric: tabular-nums; }

.facts { display: grid; grid-template-columns: fit-content(50%) minmax(0, 1fr); gap: 0.25rem 1rem; }
.facts dt, .facts dd { overflow-wrap: anywhere; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }

.inline-form { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: flex-end; }
.analysis h3 { font-size: 1.05rem; margin: 1.25rem 0 0.5rem; }
.analysis h4 { font-size: 1rem; margin: 1rem 0 0.5rem; }
.analysis h5 { font-size: 0.95rem; margin: 1rem 0 0.5rem; }
.register-analysis { border-top: 1px solid var(--border); margin-top: 1rem; }
.chart { width: 100%; height: 320px; }
.charts-failed .chart { display: none; }
.chart-tip-head { font-weight: 600; margin-bottom: 0.25rem; }
.chart-tip-row { display: flex; gap: 0.5rem; align-items: center; }
.chart-tip-mark { flex: none; width: 0.6rem; height: 0.6rem; border-radius: 50%; }
.chart-tip-value { margin-left: auto; padding-left: 1rem; font-weight: 600; font-variant-numeric: tabular-nums; }
details { margin: 0.75rem 0; }
.import-rows tr.row-error td { color: var(--error); }
.import-rows tr.row-warning td { color: var(--warning-fg); }
.import-rows tr.row-duplicate td { color: var(--muted); }
summary { cursor: pointer; color: var(--accent); }

.capture { display: grid; gap: 1rem; }
.capture-photo { max-width: 100%; max-height: 60vh; border: 1px solid var(--border); border-radius: 6px; }
@media (min-width: 900px) {
  .capture { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
}

/* Sprungmarke für Tastatur und Screenreader, sichtbar bei Fokus */
.skip-link { position: absolute; left: 1rem; top: -4rem; padding: 0.5rem 1rem; background: var(--card); color: var(--accent); border: 2px solid var(--accent); border-radius: 6px; z-index: 10; }
.skip-link:focus { top: 0.5rem; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.footer { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 2rem 1rem; }