/* Kundenverwaltung – Oberfläche */
:root {
    --bg: #f4f6f9;
    --surface: #ffffff;
    --surface-2: #f8f9fb;
    --border: #e1e5eb;
    --text: #1f2933;
    --muted: #6b7785;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-text: #ffffff;
    --danger: #c62828;
    --warn-bg: #fff4e5;
    --warn-text: #8a4b00;
    --ok-bg: #e7f6ec;
    --ok-text: #1e6b3a;
    --info-bg: #e8f0fe;
    --info-text: #1d4ed8;
    --err-bg: #fdecec;
    --err-text: #a11d1d;
    --neutral-bg: #eef1f4;
    --neutral-text: #4a5561;
    --radius: 8px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06);
    color-scheme: light;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #111418;
        --surface: #1a1f25;
        --surface-2: #20262d;
        --border: #2d353e;
        --text: #e6e9ed;
        --muted: #95a0ac;
        --primary: #4d8bf5;
        --primary-hover: #6b9ff7;
        --danger: #ef5350;
        --warn-bg: #3a2a12;
        --warn-text: #f5c27a;
        --ok-bg: #133321;
        --ok-text: #86d9a3;
        --info-bg: #172a4a;
        --info-text: #9dbcf8;
        --err-bg: #3d1717;
        --err-text: #f4a4a4;
        --neutral-bg: #262d35;
        --neutral-text: #b7c0ca;
        --shadow: none;
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.6rem; margin: 0 0 .25rem; line-height: 1.25; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
h3 { font-size: .95rem; margin: 1rem 0 .4rem; }
code { background: var(--neutral-bg); padding: 1px 5px; border-radius: 4px; }

/* Kopfzeile */
.topbar {
    display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap;
    background: var(--surface); border-bottom: 1px solid var(--border);
    padding: .6rem 1.25rem; position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; color: var(--text); font-size: 1.05rem; }
.mainnav { display: flex; gap: .25rem; flex: 1; flex-wrap: wrap; }
.mainnav a, .usernav a {
    padding: .4rem .75rem; border-radius: 6px; color: var(--muted); font-weight: 500;
}
.mainnav a:hover, .usernav a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.mainnav a.active, .usernav a.active { background: var(--info-bg); color: var(--info-text); }
.usernav { display: flex; align-items: center; gap: .5rem; }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 6px; color: var(--text); font-size: 1.1rem; padding: .2rem .6rem; cursor: pointer; }
.linklike { background: none; border: 0; padding: .4rem .5rem; color: var(--muted); font: inherit; cursor: pointer; }
.linklike:hover { color: var(--danger); }

.container { max-width: 1240px; margin: 0 auto; padding: 1.5rem 1.25rem 3rem; }

/* Seitenkopf */
.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.card .page-head { margin-bottom: .5rem; }
.breadcrumb { font-size: .85rem; color: var(--muted); margin-bottom: .2rem; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.inline { display: inline; }

/* Karten & Raster */
.card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1.1rem 1.25rem; margin-bottom: 1.25rem; box-shadow: var(--shadow);
}
.card.narrow, .form.narrow { max-width: 560px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.grid-2 > .card { margin-bottom: 1.25rem; }
.danger-zone { border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); }

/* Kennzahlen */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin-bottom: 1.25rem; }
.stat {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 1rem 1.1rem; color: var(--text); display: flex; flex-direction: column; box-shadow: var(--shadow);
}
.stat:hover { text-decoration: none; border-color: var(--primary); }
.stat-value { font-size: 1.7rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-label { color: var(--muted); font-size: .88rem; }
.stat-warn .stat-value { color: var(--warn-text); }

/* Tabellen */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
tbody tr:hover { background: var(--surface-2); }
tfoot th { color: var(--text); font-size: .9rem; text-transform: none; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
.row-muted { opacity: .55; }
.row-warn td { background: var(--warn-bg); }

.muted { color: var(--muted); }
.small { font-size: .85rem; }

/* Badges */
.badge {
    display: inline-block; padding: .1rem .5rem; border-radius: 999px; font-size: .78rem; font-weight: 600;
    background: var(--neutral-bg); color: var(--neutral-text); white-space: nowrap;
}
.badge-planned { background: var(--neutral-bg); color: var(--neutral-text); }
.badge-in_progress { background: var(--info-bg); color: var(--info-text); }
.badge-done { background: var(--ok-bg); color: var(--ok-text); }
.badge-billed { background: var(--ok-bg); color: var(--ok-text); }
.badge-unbilled { background: var(--warn-bg); color: var(--warn-text); }

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

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .3rem;
    padding: .45rem .9rem; border-radius: 6px; border: 1px solid var(--border);
    background: var(--surface); color: var(--text); font: inherit; font-weight: 500;
    cursor: pointer; text-decoration: none; line-height: 1.3;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 45%, var(--border)); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-small { padding: .2rem .55rem; font-size: .82rem; }
.btn-block { width: 100%; }
.btn-link { border-color: transparent; background: none; color: var(--muted); }
.push-right { margin-left: auto; }
.segmented { display: flex; gap: .4rem; flex-wrap: wrap; margin-bottom: 1rem; }

/* Formulare */
.form label { display: flex; flex-direction: column; gap: .3rem; margin-bottom: .9rem; font-weight: 500; font-size: .9rem; }
.form label.check, label.check { flex-direction: row; align-items: center; gap: .5rem; font-weight: 400; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0 1rem; }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number],
input[type=search], input[type=file], select, textarea {
    width: 100%; padding: .5rem .65rem; border: 1px solid var(--border); border-radius: 6px;
    background: var(--surface); color: var(--text); font: inherit; font-weight: 400;
}
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--primary) 40%, transparent); border-color: var(--primary); }
input:disabled { background: var(--surface-2); color: var(--muted); }
textarea { resize: vertical; }
fieldset { border: 1px solid var(--border); border-radius: var(--radius); padding: .75rem 1rem .25rem; margin: 0 0 1rem; }
legend { font-weight: 600; font-size: .9rem; padding: 0 .3rem; }
.radio-group { display: flex; gap: 1.25rem; flex-wrap: wrap; align-items: center; padding-bottom: .75rem; }
.radio-group label.check { margin-bottom: 0; }
.form .actions { margin-top: .5rem; }

.filter { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; }
.filter input[type=search] { flex: 1 1 260px; width: auto; }
.filter select { width: auto; flex: 0 1 200px; }

.time-form { display: flex; gap: .75rem; align-items: flex-end; flex-wrap: wrap; margin-top: 1rem; padding-top: 1rem; border-top: 1px dashed var(--border); }
.time-form label { margin-bottom: 0; }
.time-form .grow { flex: 1 1 260px; }

details.upload { margin-top: 1rem; }
details.upload summary { cursor: pointer; color: var(--primary); font-weight: 500; margin-bottom: .75rem; }

/* Details-Listen */
dl.details { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1.25rem; margin: 0 0 .5rem; }
dl.details dt { color: var(--muted); font-size: .88rem; }
dl.details dd { margin: 0; }
.notes { background: var(--surface-2); border-radius: 6px; padding: .7rem .9rem; white-space: normal; }
ul.list { list-style: none; margin: 0; padding: 0; }
ul.list li { padding: .45rem 0; border-bottom: 1px solid var(--border); }
ul.list li:last-child { border-bottom: 0; }

/* Login */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 1rem; }
.login-box { width: 100%; max-width: 400px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 2rem; box-shadow: var(--shadow); }
.login-box h1 { text-align: center; margin-bottom: 1.25rem; }

/* Sichtbarkeit abhängig von Leistungsart / Rolle (per JS) */
.is-hidden { display: none !important; }

/* Responsiv */
@media (max-width: 900px) {
    .grid-2 { grid-template-columns: 1fr; }
    .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
    .topbar { gap: .5rem; padding: .6rem 1rem; }
    .nav-toggle { display: block; margin-left: auto; }
    .mainnav, .usernav { display: none; width: 100%; flex-direction: column; }
    .topbar.nav-open .mainnav, .topbar.nav-open .usernav { display: flex; }
    .usernav { align-items: flex-start; border-top: 1px solid var(--border); padding-top: .4rem; }
    .container { padding: 1rem 1rem 2rem; }
    .card { padding: 1rem; }
    h1 { font-size: 1.35rem; }
    dl.details { grid-template-columns: 1fr; gap: 0; }
    dl.details dd { margin-bottom: .5rem; }
}