:root {
    --bg: #f5f6f8;
    --surface: #ffffff;
    --text: #1d2330;
    --muted: #6b7385;
    --border: #e1e4ea;
    --primary: #1f6feb;
    --primary-text: #ffffff;
    --danger: #c62828;
    --danger-bg: #fdecec;
    --warn-bg: #fff4e0;
    --warn-text: #8a5300;
    --ok-bg: #e7f6ec;
    --ok-text: #1b6b34;
    --wait-bg: #e8f0fe;
    --wait-text: #1a4fa0;
    --new-bg: #f0f1f4;
    --chip-on-bg: #e7f6ec;
    --chip-on-text: #1b6b34;
    --radius: 10px;
    --shadow: 0 1px 2px rgba(0, 0, 0, .05), 0 1px 3px rgba(0, 0, 0, .06);
    color-scheme: light;
}

/* Standard ist das helle Theme. Dunkel nur auf Wunsch (Benutzermenü) oder bei "System". */
:root[data-theme="dark"] {
    --bg: #12151b;
    --surface: #1b1f27;
    --text: #e6e8ec;
    --muted: #9aa2b1;
    --border: #2c323d;
    --primary: #4c8dff;
    --danger: #ff6b6b;
    --danger-bg: #3a1d1f;
    --warn-bg: #3a2c12;
    --warn-text: #ffcf7a;
    --ok-bg: #16301f;
    --ok-text: #7fd79a;
    --wait-bg: #182640;
    --wait-text: #9cbcff;
    --new-bg: #262b35;
    --chip-on-bg: #16301f;
    --chip-on-text: #7fd79a;
    --shadow: none;
    color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
    :root[data-theme="system"] {
        --bg: #12151b;
        --surface: #1b1f27;
        --text: #e6e8ec;
        --muted: #9aa2b1;
        --border: #2c323d;
        --primary: #4c8dff;
        --danger: #ff6b6b;
        --danger-bg: #3a1d1f;
        --warn-bg: #3a2c12;
        --warn-text: #ffcf7a;
        --ok-bg: #16301f;
        --ok-text: #7fd79a;
        --wait-bg: #182640;
        --wait-text: #9cbcff;
        --new-bg: #262b35;
        --chip-on-bg: #16301f;
        --chip-on-text: #7fd79a;
        --shadow: none;
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.6rem; margin: 0 0 .25rem; }
h2 { font-size: 1.15rem; margin: 0 0 .75rem; }
code { background: var(--new-bg); padding: 0 .3em; border-radius: 4px; }

.muted { color: var(--muted); }
.klein { font-size: .85rem; }
.rot { color: var(--danger); font-weight: 600; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; }
.pre { white-space: pre-wrap; }
.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }

/* ---------- Kopfleiste ---------- */
.topbar {
    position: sticky; top: 0; z-index: 10;
    display: flex; align-items: center; gap: 1.5rem;
    padding: .6rem 1.25rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; color: var(--text); font-size: 1.05rem; }
.mainnav { display: flex; gap: .25rem; flex: 1; }
.mainnav a { padding: .4rem .75rem; border-radius: 8px; color: var(--muted); }
.mainnav a:hover { background: var(--new-bg); text-decoration: none; color: var(--text); }
.mainnav a.aktiv { background: var(--wait-bg); color: var(--wait-text); font-weight: 600; }
.topbar-rechts { display: flex; align-items: center; gap: .75rem; }

.usermenu { position: relative; }
.usermenu summary { cursor: pointer; color: var(--muted); list-style: none; padding: .4rem .5rem; }
.usermenu summary::-webkit-details-marker { display: none; }
.usermenu summary::after { content: " ▾"; }
.usermenu-panel {
    position: absolute; right: 0; top: 100%;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: .5rem; min-width: 180px;
    display: flex; flex-direction: column; gap: .25rem;
}
.usermenu-panel a, .linkbutton {
    display: block; padding: .4rem .6rem; border-radius: 6px; text-align: left;
    color: var(--text); background: none; border: 0; font: inherit; cursor: pointer; width: 100%;
}
.usermenu-panel a:hover, .linkbutton:hover { background: var(--new-bg); text-decoration: none; }
.theme-wahl { display: flex; gap: .25rem; padding: .3rem .4rem .5rem; border-bottom: 1px solid var(--border); margin-bottom: .25rem; }
.theme-wahl button {
    flex: 1; padding: .3rem .4rem; border: 1px solid var(--border); border-radius: 6px;
    background: var(--surface); color: var(--muted); font: inherit; font-size: .8rem; cursor: pointer;
}
.theme-wahl button[aria-pressed="true"] { background: var(--wait-bg); color: var(--wait-text); border-color: transparent; font-weight: 600; }

/* ---------- Layout ---------- */
.container { max-width: 1400px; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }
.kopf { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.kopf-klein { margin-bottom: .5rem; align-items: center; }
.kopf-aktionen { display: flex; gap: .5rem; flex-wrap: wrap; }
.karte {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); padding: 1.25rem; margin-bottom: 1.25rem;
}
.zwei-spalten { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.leer { color: var(--muted); padding: 2rem; text-align: center; background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; gap: .35rem;
    padding: .45rem .9rem; border-radius: 8px;
    border: 1px solid var(--border); background: var(--surface); color: var(--text);
    font: inherit; font-weight: 500; cursor: pointer; white-space: nowrap;
}
.btn:hover { text-decoration: none; filter: brightness(.97); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: transparent; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--muted); }
.btn-klein { padding: .2rem .5rem; font-size: .8rem; }

/* ---------- Meldungen ---------- */
.flash { padding: .75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; }
.flash ul { margin: 0; padding-left: 1.2rem; }
.flash-ok { background: var(--ok-bg); color: var(--ok-text); }
.flash-warn { background: var(--warn-bg); color: var(--warn-text); }

/* ---------- Kacheln ---------- */
.kacheln { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; margin-bottom: 1.25rem; }
.kachel {
    display: flex; flex-direction: column; padding: 1rem 1.1rem;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    box-shadow: var(--shadow); color: var(--text); border-top: 4px solid var(--muted);
}
.kachel:hover { text-decoration: none; border-color: var(--primary); }
.kachel-zahl { font-size: 2rem; font-weight: 700; line-height: 1.1; }
.kachel-label { font-weight: 600; }
.kachel-summe { color: var(--muted); font-size: .9rem; font-variant-numeric: tabular-nums; }
.kachel-pruefen { border-top-color: #8e8e9e; }
.kachel-bezahlen { border-top-color: #e69500; }
.kachel-ueberfaellig { border-top-color: var(--danger); }
.kachel-einreichen { border-top-color: #7b4ce0; }
.kachel-erstattung { border-top-color: var(--primary); }
.kachel-null { opacity: .6; }

.liste { list-style: none; margin: 0; padding: 0; }
.liste li { display: flex; justify-content: space-between; gap: 1rem; padding: .55rem 0; border-bottom: 1px solid var(--border); }
.liste li:last-child { border-bottom: 0; }
.liste-rechts { display: flex; gap: 1rem; white-space: nowrap; font-variant-numeric: tabular-nums; }

/* ---------- Tabellen ---------- */
.tabelle-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.karte .tabelle-wrap { box-shadow: none; }
.tabelle { width: 100%; border-collapse: collapse; }
.tabelle th, .tabelle td { padding: .55rem .7rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.tabelle th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); background: var(--bg); white-space: nowrap; }
.tabelle tbody tr:hover { background: var(--bg); }
.tabelle tbody tr:last-child td { border-bottom: 0; }
.tabelle th.num, .tabelle td.num { text-align: right; }
.tabelle tr.inaktiv { opacity: .55; }
.col-check { width: 1%; }
.tabelle th a.sort { color: inherit; text-decoration: none; }
.tabelle th a.sort:hover { color: var(--primary); }
.tabelle th a.sort-aktiv { color: var(--text); }
.col-kommentar { min-width: 140px; }
.kommentar summary { max-width: 240px; cursor: pointer; list-style: none; font-size: .9rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kommentar summary::-webkit-details-marker { display: none; }
.kommentar[open] summary { white-space: normal; margin-bottom: .4rem; }
.kommentar form { display: flex; flex-direction: column; gap: .4rem; align-items: flex-start; }
.kommentar textarea { min-width: 200px; }
.aktionen { white-space: nowrap; text-align: right; }
.aktionen a { padding: 0 .3rem; font-size: 1.05rem; }

.chip {
    display: inline-block; padding: .15rem .55rem; border-radius: 999px;
    border: 1px dashed var(--border); background: transparent; color: var(--muted);
    font: inherit; font-size: .8rem; cursor: pointer; white-space: nowrap;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip-an { border-style: solid; border-color: transparent; background: var(--chip-on-bg); color: var(--chip-on-text); font-weight: 600; }
.chip-aus { cursor: default; font-style: italic; }
.chip-aus:hover { border-color: var(--border); color: var(--muted); }

.badge { display: inline-block; padding: .15rem .55rem; border-radius: 6px; font-size: .8rem; font-weight: 600; white-space: nowrap; background: var(--new-bg); color: var(--muted); }
.badge-done { background: var(--ok-bg); color: var(--ok-text); }
.badge-wait { background: var(--wait-bg); color: var(--wait-text); }
.badge-todo { background: var(--warn-bg); color: var(--warn-text); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }

form.inline { display: inline-flex; gap: .5rem; align-items: center; margin: 0; }

/* ---------- Filter ---------- */
.filter {
    display: flex; flex-wrap: wrap; gap: .75rem; align-items: flex-end;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: .9rem 1rem; margin-bottom: 1rem;
}
.filter label { display: flex; flex-direction: column; font-size: .8rem; color: var(--muted); gap: .2rem; }
.filter-suche { flex: 1; min-width: 200px; }
.filter-buttons { display: flex; gap: .5rem; }
.sammel-leiste { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: .75rem; }

/* ---------- Formulare ---------- */
input[type=text], input[type=search], input[type=password], input[type=email], input[type=tel],
input[type=date], input[type=file], select, textarea {
    font: inherit; color: var(--text); background: var(--surface);
    border: 1px solid var(--border); border-radius: 8px; padding: .45rem .6rem; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); outline-offset: -1px; border-color: transparent; }
.form label { display: flex; flex-direction: column; gap: .3rem; font-weight: 500; margin-bottom: .9rem; }
.form label.checkbox, label.checkbox { flex-direction: row; align-items: center; gap: .5rem; font-weight: 400; }
label.checkbox input { width: auto; }
.inline-label { display: inline-flex !important; margin: 0 0 0 1rem !important; }
.form fieldset { border: 0; padding: 0; margin: 0 0 1.25rem; }
.form legend { font-weight: 700; font-size: 1.1rem; margin-bottom: .75rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0 1rem; }
.form-actions { display: flex; gap: .5rem; }
.neuer-arzt { margin: -.25rem 0 1rem; padding: .6rem .9rem; border: 1px dashed var(--border); border-radius: 8px; }
.neuer-arzt summary { cursor: pointer; color: var(--primary); font-size: .9rem; }
.neuer-arzt[open] summary { margin-bottom: .75rem; }
.datum-mit-knopf { display: flex; gap: .4rem; align-items: center; }
.loeschen { margin-top: -.25rem; }

.details dl { display: grid; grid-template-columns: max-content 1fr; gap: .4rem 1.5rem; margin: 0; }
.details dt { color: var(--muted); }
.details dd { margin: 0; }

.auth-box { max-width: 420px; margin: 4rem auto; background: var(--surface); padding: 2rem; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); }
.auth-box .btn-primary { width: 100%; justify-content: center; }
.auth-box .form-actions .btn { flex: 1; justify-content: center; }

/* ---------- Mobil ---------- */
@media (max-width: 1100px) {
    .kacheln { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 800px) {
    .topbar { flex-wrap: wrap; gap: .5rem; padding: .5rem 1rem; }
    .mainnav { order: 3; width: 100%; overflow-x: auto; }
    .topbar-rechts { margin-left: auto; }
    .container { padding: 1rem 1rem 3rem; }
    .kacheln { grid-template-columns: repeat(2, 1fr); }
    .zwei-spalten { grid-template-columns: 1fr; }

    /* Tabellen als Karten */
    .tabelle thead { display: none; }
    .tabelle, .tabelle tbody, .tabelle tr, .tabelle td { display: block; width: 100%; }
    .tabelle tr { border-bottom: 1px solid var(--border); padding: .5rem 0; }
    .tabelle td { border: 0; padding: .25rem 1rem; display: flex; justify-content: space-between; gap: 1rem; text-align: right; }
    .tabelle td::before { content: attr(data-label); color: var(--muted); font-size: .85rem; text-align: left; }
    .tabelle td:not([data-label])::before { content: none; }
    .tabelle td.col-check { justify-content: flex-start; }
    .tabelle td.num { text-align: right; }
    .kommentar summary { max-width: 60vw; }
    .liste li { flex-direction: column; gap: .2rem; }
}