:root {
  --bg: #f6f5f2;
  --panel: #ffffff;
  --panel-2: #efeee9;
  --line: #dddbd3;
  --text: #1d2125;
  --muted: #6a6f75;
  --accent: #1f4e79;
  --accent-soft: #e3ecf5;
  --ok: #2e7d4f;
  --warn: #a8641a;
  --err: #b3261e;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 16px rgba(0,0,0,.05);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  color: var(--text);
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); }
body { font-size: 15px; line-height: 1.5; }
a { color: var(--accent); }
h1 { font-size: 22px; margin: 0 0 4px; font-weight: 600; }
h2 { font-size: 17px; margin: 0 0 12px; font-weight: 600; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

button, .btn {
  font: inherit; border: 1px solid var(--line); background: var(--panel); color: var(--text);
  padding: 7px 14px; border-radius: 8px; cursor: pointer; text-decoration: none; display: inline-block;
}
button:hover { background: var(--panel-2); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { filter: brightness(1.1); }
button.danger { color: var(--err); }
button.link { border: none; background: none; padding: 2px 6px; color: var(--accent); }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea {
  font: inherit; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; background: #fff; color: var(--text);
  width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }

/* Kopfzeile */
.topbar {
  display: flex; align-items: center; gap: 16px; padding: 12px 24px; background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; color: var(--accent); letter-spacing: .2px; }
.topbar .who { margin-left: auto; color: var(--muted); font-size: 14px; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 24px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.stack > * + * { margin-top: 16px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); font-weight: 600; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; background: var(--panel-2); color: var(--muted); }
.badge.ok { background: #e3f2e8; color: var(--ok); }
.badge.warn { background: #fbefe0; color: var(--warn); }
.badge.err { background: #fbe4e2; color: var(--err); }
.badge.accent { background: var(--accent-soft); color: var(--accent); }

/* Tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 20px; overflow-x: auto; }
.tabs button { border: none; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 10px 14px; color: var(--muted); white-space: nowrap; }
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

/* Modal & Toast */
.modal-bg { position: fixed; inset: 0; background: rgba(20,25,30,.35); display: flex; align-items: center; justify-content: center; z-index: 50; padding: 16px; }
.modal { background: var(--panel); border-radius: 12px; padding: 22px; width: 100%; max-width: 520px; max-height: 90vh; overflow: auto; box-shadow: 0 10px 40px rgba(0,0,0,.2); }
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: #1d2125; color: #fff; padding: 10px 18px; border-radius: 8px; z-index: 60; font-size: 14px; max-width: 90vw; }
.toast.err { background: var(--err); }
.secret { font-family: Consolas, monospace; background: var(--panel-2); padding: 10px 12px; border-radius: 8px; font-size: 16px; user-select: all; word-break: break-all; }
.checks { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.checks label { display: flex; gap: 6px; align-items: center; margin: 0; color: var(--text); font-size: 14px; }
.checks input { width: auto; }

/* Login */
.login-wrap { min-height: 100%; display: flex; align-items: center; justify-content: center; padding: 16px; }
.login { width: 100%; max-width: 380px; }

/* Admin: Rechte-Layout */
.perm-grid { display: grid; grid-template-columns: 340px 1fr; gap: 20px; align-items: start; }
@media (max-width: 900px) { .perm-grid { grid-template-columns: 1fr; } }
.dropzone { border: 2px dashed var(--line); border-radius: var(--radius); padding: 18px; text-align: center; color: var(--muted); cursor: pointer; }
.dropzone.over { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.doclist { max-height: 60vh; overflow: auto; margin-top: 12px; }
.doc {
  display: flex; gap: 8px; align-items: center; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: #fff; margin-bottom: 6px; cursor: grab; font-size: 14px;
}
.doc:active { cursor: grabbing; }
.doc .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc.unassigned { border-left: 3px solid var(--warn); }
.tree ul { list-style: none; margin: 0; padding-left: 26px; border-left: 1px dashed var(--line); margin-left: 12px; }
.tree > ul { padding-left: 0; border-left: none; margin-left: 0; }
.node {
  border: 1px solid var(--line); border-radius: 10px; background: #fff; padding: 10px 12px; margin: 8px 0;
  transition: background .1s, border-color .1s;
}
.node.over { border-color: var(--accent); background: var(--accent-soft); }
.node-head { display: flex; align-items: center; gap: 8px; cursor: grab; }
.node-head .title { font-weight: 600; }
.node-head .tools { margin-left: auto; display: flex; gap: 2px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.chip { font-size: 12.5px; background: var(--panel-2); border-radius: 6px; padding: 3px 8px; cursor: pointer; display: inline-flex; gap: 6px; align-items: center; }
.chip.own { background: var(--accent-soft); color: var(--accent); }
.chip.inherited { opacity: .7; font-style: italic; }
.root-drop { border: 2px dashed var(--line); border-radius: 10px; padding: 8px; text-align: center; color: var(--muted); font-size: 13px; margin-top: 8px; }
.root-drop.over { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* Chat */
.chat { display: flex; height: 100vh; }
.side { width: 270px; background: var(--panel-2); border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.side .top { padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.side .list { flex: 1; overflow: auto; padding: 0 8px; }
.conv { padding: 8px 10px; border-radius: 8px; cursor: pointer; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: flex; align-items: center; gap: 4px; }
.conv span { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.conv:hover, .conv.active { background: #e2e0d8; }
.conv .del { display: none; border: none; background: none; padding: 0 4px; color: var(--muted); }
.conv:hover .del { display: inline; }
.side .foot { padding: 12px 14px; border-top: 1px solid var(--line); font-size: 13px; }
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.msgs { flex: 1; overflow: auto; padding: 24px 16px; }
.msgs-inner { max-width: 780px; margin: 0 auto; }
.msg { margin-bottom: 22px; }
.msg.user .bubble { background: var(--accent-soft); border-radius: 14px; padding: 10px 14px; display: inline-block; max-width: 85%; white-space: pre-wrap; }
.msg.user { text-align: right; }
.msg.user .bubble { text-align: left; }
.msg.assistant .bubble { padding: 2px 0; }
.bubble p { margin: 0 0 10px; }
.bubble ul, .bubble ol { margin: 0 0 10px; padding-left: 22px; }
.bubble code { background: var(--panel-2); padding: 1px 5px; border-radius: 4px; }
.sources { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.sources a { font-size: 12.5px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 3px 8px; text-decoration: none; color: var(--text); }
.composer { padding: 12px 16px 18px; }
.composer-inner { max-width: 780px; margin: 0 auto; display: flex; gap: 8px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 8px; box-shadow: var(--shadow); }
.composer textarea { border: none; resize: none; max-height: 200px; outline: none; }
.composer textarea:focus { outline: none; }
.empty { text-align: center; margin-top: 18vh; color: var(--muted); }
.empty h1 { color: var(--text); font-size: 26px; }
.typing::after { content: "▍"; animation: blink 1s infinite; color: var(--muted); }
@keyframes blink { 50% { opacity: 0; } }
.menu-btn { display: none; }
@media (max-width: 760px) {
  .side { position: fixed; z-index: 20; height: 100vh; left: -280px; transition: left .2s; }
  .side.open { left: 0; }
  .menu-btn { display: inline-block; }
}