:root {
  --bg: #f2f4f6;
  --surface: #ffffff;
  --surface-2: #e8ecef;
  --ink: #15212b;
  --muted: #5b6874;
  --line: #d5dbe0;
  --primary: #1f5f7a;
  --primary-ink: #ffffff;
  --primary-soft: #dcebf1;
  --mine: #d6e8f0;
  --due: #a35f0e;
  --danger: #b3261e;
  --ok: #2e7d4f;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(21, 33, 43, .08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f171d;
    --surface: #17222a;
    --surface-2: #213039;
    --ink: #e3ebf0;
    --muted: #94a5b2;
    --line: #2c3c47;
    --primary: #7cc0dc;
    --primary-ink: #0b2531;
    --primary-soft: #1d3a48;
    --mine: #1f3d4b;
    --due: #e3a457;
    --danger: #f2a199;
    --ok: #7fd1a1;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.45 "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.boot { padding: 2rem; text-align: center; color: var(--muted); }
[hidden] { display: none !important; }

/* ---------- Bausteine ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  min-height: 40px; padding: 0 1rem; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--surface); cursor: pointer;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--danger); }
.btn:disabled { opacity: .55; cursor: default; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%; border: 0; background: transparent; cursor: pointer; color: var(--muted);
  flex: none;
}
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }
.icon-btn.live { color: var(--danger); background: var(--surface-2); }
.icon-btn svg, .btn svg { width: 20px; height: 20px; }
svg.ic { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

label.field { display: grid; gap: .3rem; font-size: .9rem; color: var(--muted); }
.input-wrap { display: flex; align-items: flex-start; gap: .25rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding-right: .2rem; }
.input-wrap:focus-within { border-color: var(--primary); }
input.in, select.in, textarea.in {
  width: 100%; min-height: 42px; padding: .55rem .75rem; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--surface); color: var(--ink);
}
.input-wrap input.in, .input-wrap textarea.in { border: 0; background: transparent; }
.input-wrap input.in:focus, .input-wrap textarea.in:focus { outline: none; }
textarea.in { resize: vertical; min-height: 90px; }
.error { color: var(--danger); font-size: .92rem; margin: 0; }
.hint { color: var(--muted); font-size: .9rem; margin: 0; }

/* ---------- Anmeldung / Entsperren ---------- */
.center-page { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
.card { width: 100%; max-width: 400px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 1.75rem; box-shadow: var(--shadow); display: grid; gap: 1rem; }
.card h1 { margin: 0; font-size: 1.45rem; }
.card .lead { margin: 0; color: var(--muted); }
.brand-mark { width: 44px; height: 44px; }

/* ---------- Gerüst ---------- */
.topbar {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: .5rem;
  padding: .5rem .75rem; background: var(--surface); border-bottom: 1px solid var(--line);
}
.topbar .brand { display: flex; align-items: center; gap: .5rem; font-weight: 700; margin-right: .5rem; }
.topbar .brand img { width: 28px; height: 28px; }
.tabs { display: flex; gap: .25rem; overflow-x: auto; }
.tab {
  position: relative; border: 0; background: transparent; padding: .5rem .8rem; border-radius: 8px; cursor: pointer;
  color: var(--muted); white-space: nowrap; font-weight: 600;
}
.tab[aria-current="page"] { color: var(--primary); background: var(--primary-soft); }
.badge { display: inline-block; min-width: 1.25rem; padding: 0 .35rem; margin-left: .35rem; border-radius: 999px; background: var(--danger); color: #fff; font-size: .75rem; line-height: 1.25rem; text-align: center; }
.spacer { flex: 1; }
.conn { width: 9px; height: 9px; border-radius: 50%; background: var(--danger); flex: none; }
.conn.on { background: var(--ok); }
main { max-width: 980px; margin: 0 auto; padding: 1rem; }

/* ---------- Aufgaben ---------- */
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-bottom: 1rem; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.seg button { border: 0; background: transparent; padding: .5rem .9rem; cursor: pointer; color: var(--muted); }
.seg button[aria-pressed="true"] { background: var(--primary); color: var(--primary-ink); }
.task-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.task {
  display: flex; align-items: flex-start; gap: .6rem; padding: .7rem .6rem .7rem .8rem;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
}
.task input[type="checkbox"] { width: 22px; height: 22px; margin-top: .15rem; accent-color: var(--primary); flex: none; }
.task-body { flex: 1; min-width: 0; cursor: pointer; }
.task-title { font-weight: 600; overflow-wrap: anywhere; }
.task.done .task-title { text-decoration: line-through; color: var(--muted); }
.task-meta { color: var(--muted); font-size: .92rem; display: flex; flex-wrap: wrap; gap: .25rem .9rem; margin-top: .15rem; }
.task-meta .due { color: var(--due); }
.task.overdue { border-left: 4px solid var(--danger); }
.task.overdue .due { color: var(--danger); font-weight: 600; }
.pill { font-size: .8rem; padding: .05rem .5rem; border-radius: 999px; background: var(--primary-soft); color: var(--primary); }
.empty { text-align: center; color: var(--muted); padding: 3rem 1rem; }

/* ---------- Dialog ---------- */
dialog {
  width: min(560px, calc(100vw - 1.5rem)); max-height: calc(100vh - 2rem); border: 1px solid var(--line);
  border-radius: 14px; padding: 0; background: var(--surface); color: var(--ink);
}
dialog::backdrop { background: rgba(10, 20, 28, .45); }
.dlg { display: grid; gap: .9rem; padding: 1.25rem; }
.dlg h2 { margin: 0; font-size: 1.2rem; }
.dlg .row { display: flex; gap: .5rem; align-items: end; }
.dlg .row > * { flex: 1; }
.dlg .actions { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: flex-end; margin-top: .25rem; }
.dlg .actions .left { margin-right: auto; }
.safety { font: 600 1.35rem/1.4 ui-monospace, Consolas, monospace; text-align: center; letter-spacing: .05em; padding: .75rem; background: var(--surface-2); border-radius: var(--radius); }

/* ---------- Nachrichten ---------- */
.chat { display: grid; grid-template-columns: 260px 1fr; height: calc(100vh - 57px - 2rem - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px)); min-height: 420px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.chat-list { border-right: 1px solid var(--line); overflow-y: auto; }
.chat-item { display: flex; align-items: center; gap: .6rem; width: 100%; padding: .7rem .8rem; border: 0; border-bottom: 1px solid var(--line); background: transparent; text-align: left; cursor: pointer; }
.chat-item:hover { background: var(--surface-2); }
.chat-item[aria-current="true"] { background: var(--primary-soft); }
.chat-item:disabled { opacity: .5; cursor: default; }
.avatar { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--primary); color: var(--primary-ink); font-weight: 700; flex: none; }
.chat-item .who { flex: 1; min-width: 0; }
.chat-item .who small { display: block; color: var(--muted); }
.pane { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.pane-head { display: flex; align-items: center; gap: .5rem; padding: .5rem .75rem; border-bottom: 1px solid var(--line); font-weight: 600; }
.pane-head .title { flex: 1; }
.back { display: none; }
.msgs { flex: 1; overflow-y: auto; padding: .75rem; display: flex; flex-direction: column; gap: .35rem; }
.msg { max-width: 78%; align-self: flex-start; background: var(--surface-2); border-radius: 14px; padding: .45rem .75rem .35rem; }
.msg.mine { align-self: flex-end; background: var(--mine); }
.msg .from { font-size: .8rem; font-weight: 700; color: var(--primary); }
.msg .text { white-space: pre-wrap; overflow-wrap: anywhere; }
.msg .meta { display: flex; align-items: center; justify-content: flex-end; gap: .25rem; font-size: .75rem; color: var(--muted); }
.msg .meta button { border: 0; background: transparent; color: var(--muted); cursor: pointer; padding: .1rem .25rem; border-radius: 6px; }
.msg .meta button:hover { background: var(--surface); color: var(--ink); }
.msg .meta svg { width: 15px; height: 15px; }
.composer { display: flex; align-items: flex-end; gap: .4rem; padding: .6rem; border-top: 1px solid var(--line); }
.composer .input-wrap { flex: 1; }
.composer textarea.in { min-height: 42px; max-height: 160px; resize: none; }
.pane-empty { flex: 1; display: grid; place-items: center; color: var(--muted); padding: 1rem; text-align: center; }

/* ---------- Verwaltung ---------- */
.users { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.users th, .users td { text-align: left; padding: .6rem .7rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
.users th { font-size: .85rem; color: var(--muted); font-weight: 600; background: var(--surface-2); }
.users td .btn { min-height: 34px; padding: 0 .65rem; font-size: .9rem; }
.users .acts { display: flex; flex-wrap: wrap; gap: .35rem; }
.table-wrap { overflow-x: auto; }
section + section { margin-top: 1.5rem; }
h2.section { font-size: 1.1rem; margin: 0 0 .75rem; }

/* ---------- Meldung ---------- */
#toast {
  position: fixed; left: 50%; bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%);
  background: var(--ink); color: var(--bg); padding: .65rem 1rem; border-radius: var(--radius);
  max-width: calc(100vw - 2rem); opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 50;
}
#toast.show { opacity: 1; }

/* ---------- Handy ---------- */
@media (max-width: 720px) {
  main { padding: .6rem; }
  .topbar { flex-wrap: wrap; }
  .topbar .brand span { display: none; }
  .tabs { order: 3; width: 100%; }
  .chat { grid-template-columns: 1fr; height: calc(100vh - 110px - 1.2rem - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px)); }
  .chat.open .chat-list { display: none; }
  .chat:not(.open) .pane { display: none; }
  .back { display: inline-flex; }
  .msg { max-width: 88%; }
  .users .hide-sm { display: none; }
}
@media (prefers-reduced-motion: reduce) { #toast { transition: none; } }

/* ---------- v2: Hinweise, Status, Zugangsdaten ---------- */
.hints { max-width: 980px; margin: 0 auto; padding: 0 1rem; display: grid; gap: .5rem; }
.hints:not(:empty) { padding-top: 1rem; }
.banner {
  display: flex; align-items: center; gap: .75rem; padding: .7rem .9rem;
  background: var(--primary-soft); border: 1px solid var(--line); border-radius: var(--radius);
}
.banner > svg { width: 22px; height: 22px; color: var(--primary); flex: none; }
.banner > span { flex: 1; }
.pill.ok { background: color-mix(in srgb, var(--ok) 18%, transparent); color: var(--ok); }
.pill.warn { background: color-mix(in srgb, var(--due) 20%, transparent); color: var(--due); font-weight: 600; }
.pill.bad { background: color-mix(in srgb, var(--danger) 16%, transparent); color: var(--danger); }
.creds { display: grid; gap: .5rem; padding: .9rem; background: var(--surface-2); border-radius: var(--radius); }
.creds > div { display: grid; grid-template-columns: 8.5rem 1fr; gap: .5rem; align-items: baseline; }
.creds span { color: var(--muted); font-size: .9rem; }
.creds strong { overflow-wrap: anywhere; }
.mono { font-family: ui-monospace, Consolas, monospace; letter-spacing: .03em; }
ol.steps { margin: 0; padding-left: 1.25rem; display: grid; gap: .35rem; color: var(--ink); }
.users td .hint { font-size: .85rem; }
@media (max-width: 720px) {
  .banner { flex-wrap: wrap; }
  .creds > div { grid-template-columns: 1fr; gap: 0; }
}

/* ---------- Anhänge ---------- */
.att-list { display: grid; gap: .4rem; }
.att-list:empty { display: none; }
.att-tool { display: inline-flex; }
.field > .att-tool { justify-self: start; }
.att { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; max-width: 100%; }
.att.error { border-color: var(--danger); }
.att.error .att-size { color: var(--danger); }
.att-row { display: flex; align-items: center; gap: .25rem; }
.att-main {
  flex: 1; min-width: 0; display: grid; grid-template-columns: auto 1fr; column-gap: .5rem; align-items: center;
  padding: .45rem .6rem; border: 0; background: transparent; text-align: left; cursor: pointer; color: var(--ink);
}
span.att-main { cursor: default; }
.att-main > svg { width: 18px; height: 18px; color: var(--primary); grid-row: span 2; }
.att-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.att-size { font-size: .8rem; color: var(--muted); }
.att-x { width: 34px; height: 34px; }
.att-img { display: block; max-width: 100%; max-height: 260px; object-fit: contain; background: var(--surface); cursor: pointer; }
.msg .msg-files { display: grid; gap: .35rem; margin: .3rem 0 .1rem; min-width: 220px; }
.msg.mine .att { background: color-mix(in srgb, var(--surface) 55%, var(--mine)); }
.composer-wrap { border-top: 1px solid var(--line); }
.composer-wrap > .att-list { padding: .6rem .6rem 0; max-height: 30vh; overflow-y: auto; }
.composer-wrap > .composer { border-top: 0; }
.clipcount { display: inline-flex; align-items: center; gap: .15rem; }
.clipcount svg { width: 15px; height: 15px; }
.dropping { outline: 3px dashed var(--primary); outline-offset: -6px; }
div.field { display: grid; gap: .3rem; font-size: .9rem; color: var(--muted); }
div.field .att { font-size: 1rem; }

/* ---------- Versteckte Kontakte ---------- */
.pill.hidden-pill { background: color-mix(in srgb, var(--ink) 12%, transparent); color: var(--ink); margin-left: .35rem; }
.visibility { display: grid; gap: .5rem; padding: .8rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2); }
.contact-list { display: grid; gap: .35rem; max-height: 40vh; overflow-y: auto; }
.contact { display: flex; align-items: center; gap: .5rem; padding: .35rem .5rem; background: var(--surface); border-radius: 8px; }
.contact input { width: 18px; height: 18px; accent-color: var(--primary); }