:root {
    --bg: #f4f5f7;
    --surface: #ffffff;
    --text: #1f2933;
    --muted: #6b7280;
    --border: #dde1e6;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --ok: #047857;
    --ok-bg: #ecfdf5;
    --error-bg: #fef2f2;
    --warn: #b45309;
    --warn-bg: #fffbeb;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: var(--primary); }
code { font-size: .9em; }

/* Kopfzeile */
.topbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 16px;
    padding: 10px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; }
.nav a { text-decoration: none; }
.nav form { margin: 0; }
.linklike { padding: 0; border: 0; background: none; color: var(--primary); font: inherit; cursor: pointer; }

.container { max-width: 1200px; margin: 0 auto; padding: 16px; }

/* Karten und Text */
.card {
    margin-bottom: 16px;
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.card.narrow { max-width: 440px; margin: 40px auto; }
.card.medium { max-width: 760px; margin-left: auto; margin-right: auto; }
h1 { margin: 0 0 16px; font-size: 1.5rem; line-height: 1.25; }
h2 { margin: 0 0 12px; font-size: 1.2rem; }
h2.spaced { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--border); }
.hint { color: var(--muted); font-size: .9rem; }
.back { margin: 24px 0 0; }

/* Formulare */
label { display: block; margin-bottom: 14px; font-size: .95rem; font-weight: 600; }
input, select, textarea {
    display: block;
    width: 100%;
    margin-top: 4px;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    color: inherit;
    font: inherit;
    font-weight: 400;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); outline: 2px solid var(--primary); outline-offset: 0; }
label.check { display: flex; align-items: center; gap: 8px; font-weight: 400; }
label.check input { width: auto; margin: 0; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

.btn {
    display: inline-block;
    padding: 9px 16px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    color: var(--text);
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}
.btn:hover { background: #f0f2f5; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { border-color: #f3b4b4; color: var(--danger); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 20px; }
.actions form { margin: 0; }
.complete-form { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.complete-form + .actions { margin-top: 12px; }

/* Meldungen und Kennzeichnungen */
.alert { margin: 0 0 16px; padding: 10px 14px; border-radius: 6px; }
.alert.ok { background: var(--ok-bg); color: var(--ok); }
.alert.error { background: var(--error-bg); color: var(--danger); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }
.alert ul { margin: 0; padding-left: 18px; }

.badge {
    display: inline-block;
    margin-bottom: 8px;
    padding: 2px 10px;
    border-radius: 999px;
    background: #eef2ff;
    color: var(--primary);
    font-size: .8rem;
    font-weight: 600;
}
.badge.done { background: var(--ok-bg); color: var(--ok); }
.badge.overdue { background: var(--error-bg); color: var(--danger); }
.badge.inactive { background: #f3f4f6; color: var(--muted); }
td .badge { margin: 0; }

/* Aufgabendetails */
dl.details { display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; margin: 0; }
dl.details dt { color: var(--muted); font-weight: 600; }
dl.details dd { margin: 0; overflow-wrap: anywhere; }

/* Tabellen */
.table-wrap { overflow-x: auto; }
table.list { width: 100%; border-collapse: collapse; }
table.list th, table.list td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; }
table.list th { color: var(--muted); font-size: .85rem; }

/* Reiter in den Einstellungen */
.tabs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--border); }
.tabs a {
    margin-bottom: -1px;
    padding: 8px 14px;
    border: 1px solid transparent;
    border-radius: 6px 6px 0 0;
    color: var(--muted);
    text-decoration: none;
}
.tabs a:hover { color: var(--text); }
.tabs a.active { border-color: var(--border); border-bottom-color: var(--bg); background: var(--bg); color: var(--text); font-weight: 600; }
.row-actions { display: flex; flex-wrap: wrap; gap: 4px 14px; white-space: nowrap; }
.row-actions form { margin: 0; }
.linklike.danger { color: var(--danger); }
.nowrap { white-space: nowrap; }

/* Kalender */
.toolbar { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.toolbar h1 { margin: 0; }
.toolbar-actions { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; }
.toolbar .filter { min-width: 220px; margin: 0; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 0 0 12px; padding: 0; list-style: none; font-size: .9rem; }
.legend li::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 6px;
    border-radius: 50%;
    background: var(--dot);
}
#calendar { padding: 12px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.fc .fc-toolbar-title { font-size: 1.15rem; }
.fc .fc-button { font-size: .85rem; }
.fc .fc-timegrid-slot { height: 2.4em; }
.fc-timegrid-event .fc-event-main { font-size: .8rem; line-height: 1.25; }
.fc-event.is-done { opacity: .5; }
.fc-event.is-done .fc-event-title,
.fc-list-event.is-done .fc-list-event-title { text-decoration: line-through; }
.fc-timegrid-event.is-overdue,
.fc-daygrid-event.is-overdue { outline: 2px solid var(--danger); outline-offset: -2px; }
.fc-list-event.is-overdue .fc-list-event-title::after { content: ' · überfällig'; color: var(--danger); font-size: .85em; }

@media (max-width: 600px) {
    .container { padding: 12px; }
    .card { padding: 16px; }
    .card.narrow { margin: 16px auto; }
    .row { grid-template-columns: 1fr; }
    dl.details { grid-template-columns: 1fr; gap: 2px; }
    dl.details dd { margin-bottom: 10px; }
    .toolbar .filter { min-width: 0; flex: 1; }
    #calendar { padding: 6px; }
    .fc .fc-toolbar { gap: 6px; }
    .fc .fc-toolbar-title { font-size: 1rem; }
}