:root {
  --bg: #f4f5f7; --card: #fff; --text: #1d2330; --muted: #667085; --border: #dde1e7;
  --primary: #1f5eff; --primary-text: #fff; --danger: #c62828; --green: #1b7f3b; --blue: #1f5eff; --grey: #8a93a3;
  --error-bg: #fdecec; --ok-bg: #e8f6ec; --hl: #fff8dc; --primary-soft: #e8efff; --amber: #b26a00;
  --shadow: 0 8px 24px rgba(16, 24, 40, .12);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b; --card: #1b2029; --text: #e7eaf0; --muted: #98a2b3; --border: #2c3340;
    --primary: #5b8cff; --error-bg: #3a1f22; --ok-bg: #1d3325; --hl: #33301c; --primary-soft: #1d2a4a;
    --amber: #e0a030; --shadow: 0 8px 24px rgba(0, 0, 0, .45);
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
.top { display: flex; align-items: center; gap: 16px; padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); text-decoration: none; }
svg { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.brand-icon { width: 20px; height: 20px; color: var(--primary); }
nav { display: flex; gap: 12px; align-items: center; margin-left: auto; }
nav > a, button.link { color: var(--muted); text-decoration: none; background: none; border: 0; padding: 6px 10px; border-radius: 6px; font: inherit; cursor: pointer; }
nav > a:hover, button.link:hover { color: var(--text); background: var(--bg); }
nav > a.active { color: var(--text); font-weight: 600; }
nav form { margin: 0; }
main { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px 24px; margin-bottom: 20px; }
.card.narrow { max-width: 480px; margin-left: auto; margin-right: auto; }
h1 { font-size: 1.35rem; margin: 0 0 12px; } h2 { font-size: 1.1rem; margin: 0 0 12px; }
label { display: block; margin-bottom: 12px; font-weight: 500; }
label.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }
input:not([type=checkbox]), select { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); font: inherit; font-weight: 400; }
input:focus-visible, button:focus-visible, summary:focus-visible, a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.field-hint { display: block; margin-top: 4px; font-size: 13px; font-weight: 400; color: var(--muted); }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }
button { padding: 8px 14px; border: 1px solid var(--border); border-radius: 6px; background: var(--card); color: var(--text); font: inherit; cursor: pointer; }
button.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); font-weight: 600; }
button.danger { color: var(--danger); border-color: var(--danger); }
button.small { padding: 4px 10px; font-size: 13px; }
button.block { display: block; width: 100%; padding: 10px 14px; }
button:disabled { opacity: .6; cursor: wait; }
.muted { color: var(--muted); } .small { font-size: 13px; } .nowrap { white-space: nowrap; }
.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.alert.error { background: var(--error-bg); color: var(--danger); }
.alert.ok { background: var(--ok-bg); color: var(--green); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
tr.highlight td { background: var(--hl); }
td form { margin: 0; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; color: #fff; }
.badge.green { background: var(--green); } .badge.blue { background: var(--blue); } .badge.grey { background: var(--grey); }
.badge.amber { background: var(--amber); }
.right { text-align: right; }

/* Einstellungsmenü (Zahnrad) */
.menu { position: relative; }
.menu > summary { list-style: none; }
.menu > summary::-webkit-details-marker { display: none; }
.icon-button { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 8px; color: var(--muted); cursor: pointer; }
.icon-button:hover, .menu[open] > .icon-button { color: var(--text); background: var(--bg); }
.icon-button svg { width: 20px; height: 20px; }
.menu-panel { position: absolute; right: 0; top: calc(100% + 8px); z-index: 20; min-width: 240px; padding: 6px;
  background: var(--card); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); }
.menu-panel a, .menu-item { display: block; width: 100%; padding: 8px 12px; border: 0; border-radius: 6px; background: none;
  color: var(--text); font: inherit; text-align: left; text-decoration: none; cursor: pointer; }
.menu-panel a:hover, .menu-item:hover { background: var(--bg); }
.menu-panel form { margin: 0; }
.menu-head { display: flex; align-items: center; gap: 10px; padding: 8px 12px 12px; margin-bottom: 6px; border-bottom: 1px solid var(--border); }
.menu-head > div > * { display: block; }
.menu-sep { height: 1px; margin: 6px 0; background: var(--border); }
.avatar { display: grid; place-items: center; flex: none; width: 34px; height: 34px; border-radius: 50%;
  background: var(--primary); color: var(--primary-text); font-weight: 700; }

/* Einstellungen */
.settings { display: grid; grid-template-columns: 220px 1fr; gap: 24px; align-items: start; }
.side-nav { position: sticky; top: 16px; }
.side-nav h1 { font-size: 1.2rem; margin: 4px 12px 12px; }
.side-nav h2 { margin: 20px 12px 6px; font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
.side-nav a { display: block; padding: 8px 12px; border-radius: 6px; color: var(--text); text-decoration: none; }
.side-nav a:hover { background: var(--card); }
.side-nav a.active { background: var(--card); box-shadow: inset 3px 0 0 var(--primary); font-weight: 600; }
.settings-body > .card:last-child { margin-bottom: 0; }
.form-narrow { max-width: 440px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 8px 24px; margin: 0; }
.facts dt { color: var(--muted); } .facts dd { margin: 0; }
.checklist { margin: 0; padding-left: 20px; } .checklist li { margin-bottom: 8px; }
@media (max-width: 760px) {
  .settings { grid-template-columns: 1fr; gap: 12px; }
  .side-nav { position: static; display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
  .side-nav h1 { width: 100%; margin: 0 0 4px; }
  .side-nav h2 { display: none; }
}

/* Erste Anmeldung */
.onboarding { text-align: left; padding: 32px; }
.onboarding-icon { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 16px; border-radius: 50%;
  background: var(--primary-soft); color: var(--primary); }
.onboarding-icon svg { width: 26px; height: 26px; }
.lead { color: var(--muted); margin: 0 0 20px; }
.linkbox { display: flex; gap: 6px; min-width: 260px; }
.linkbox input { margin: 0; font-size: 12px; padding: 4px 6px; }
code { background: var(--bg); padding: 1px 5px; border-radius: 4px; }

/* Viewer */
body.viewer main { max-width: 1040px; }
.toolbar { position: sticky; top: 0; z-index: 2; display: flex; gap: 8px; align-items: center; padding: 8px 12px; background: var(--card); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 12px; }
.toolbar[hidden] { display: none; }
.toolbar .spacer { flex: 1; }
.pages { display: flex; flex-direction: column; align-items: center; gap: 12px; user-select: none; -webkit-user-select: none; }
.pages canvas { background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,.25); max-width: 100%; }
@media print { body.viewer * { display: none !important; } }
.shield { position: fixed; inset: 0; z-index: 10; background: #000; color: #fff; display: flex; align-items: center; justify-content: center; text-align: center; padding: 16px; }
.shield[hidden] { display: none; }
.shield strong { font-size: 1.3rem; }
.shield p { color: #bbb; max-width: 360px; }
body.shielded .pages { filter: brightness(0); }