:root {
  --bg: #f7f7f5; --panel: #ffffff; --text: #1d1d1b; --muted: #6b6b66; --border: #dcdcd6;
  --accent: #b4552d; --user: #eae6dd; --tool: #f0f0ec; --ok: #2e7d32; --warn: #b26a00; --err: #c62828;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1b1a; --panel: #242423; --text: #ecebe6; --muted: #a09f99; --border: #3a3a37;
    --accent: #e08159; --user: #33312c; --tool: #2b2b29; --ok: #66bb6a; --warn: #ffb74d; --err: #ef5350;
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, sans-serif;
  display: flex; flex-direction: column; }
button, .btn { font: inherit; padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--panel); color: var(--text); cursor: pointer; text-decoration: none; }
button:disabled { opacity: .45; cursor: default; }
button.primary, #btn-send { background: var(--accent); border-color: var(--accent); color: #fff; }

header { display: flex; align-items: center; gap: 8px; padding: 8px 16px; border-bottom: 1px solid var(--border);
  background: var(--panel); flex-wrap: wrap; }
header h1 { font-size: 17px; margin: 0 8px 0 0; }
.spacer { flex: 1; }
.status { font-size: 13px; padding: 2px 10px; border-radius: 999px; border: 1px solid currentColor; }
.status::before { content: "●  "; }
.status.ok { color: var(--ok); } .status.busy { color: var(--warn); } .status.off { color: var(--muted); }

#app { flex: 1; display: flex; min-height: 0; }
#main { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 0; }
main { flex: 1; overflow-y: auto; padding: 16px; }
main > * { max-width: 900px; margin-left: auto; margin-right: auto; }
.msg { margin: 10px auto; }
.msg.user { background: var(--user); padding: 8px 12px; border-radius: 10px; white-space: pre-wrap; }
.msg.user::before { content: attr(data-who); display: block; font-size: 12px; color: var(--muted); }
.msg.assistant > :first-child { margin-top: 0; } .msg.assistant > :last-child { margin-bottom: 0; }
.msg pre { background: var(--tool); padding: 8px; border-radius: 6px; overflow-x: auto; }
.msg code { font-family: var(--mono); font-size: 13px; }
.msg table { border-collapse: collapse; } .msg td, .msg th { border: 1px solid var(--border); padding: 3px 8px; }
.streaming { opacity: .85; }
details.tool, details.note { background: var(--tool); border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 10px; font-size: 13px; }
details.tool summary, details.note summary { cursor: pointer; color: var(--muted); overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap; }
details.tool summary b { color: var(--text); font-weight: 600; }
details.tool pre { white-space: pre-wrap; word-break: break-word; max-height: 400px; overflow: auto;
  font-family: var(--mono); font-size: 12px; margin: 6px 0; }
details.tool.error summary::after { content: "  Fehler"; color: var(--err); }
.result { font-size: 12px; color: var(--muted); text-align: right; }
.result.err { color: var(--err); }
.sysline { font-size: 12px; color: var(--muted); text-align: center; }

#questions:empty { display: none; }
#questions { padding: 0 16px; }
.question { max-width: 900px; margin: 8px auto; background: var(--panel); border: 2px solid var(--accent);
  border-radius: 10px; padding: 10px 14px; }
.question h3 { margin: 0 0 6px; font-size: 15px; }
.question label { display: block; margin: 4px 0; cursor: pointer; }
.question label small { color: var(--muted); display: block; margin-left: 24px; }
.question input[type=text] { width: 100%; padding: 6px; margin-top: 4px; font: inherit;
  background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 6px; }
.question .actions { display: flex; gap: 8px; margin-top: 8px; }
.question pre { white-space: pre-wrap; font-size: 12px; max-height: 200px; overflow: auto; }

#composer { display: flex; align-items: flex-end; gap: 8px; padding: 2px 16px 10px; background: var(--panel); }
#composer textarea { flex: 1; resize: none; min-height: 40px; max-height: 75vh; padding: 8px 10px; font: inherit;
  background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 8px; }

body.login { align-items: center; justify-content: center; padding: 16px; }
body.login form { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 24px;
  width: 100%; max-width: 340px; display: flex; flex-direction: column; gap: 12px; }
body.login h1 { margin: 0; font-size: 20px; }
body.login label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; }
body.login input { padding: 8px; font: inherit; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; }
body.login button { background: var(--accent); color: #fff; border-color: var(--accent); }
.err { color: var(--err); margin: 0; }

.limits { font-size: 12px; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; }
.limits .meter { display: inline-flex; align-items: center; gap: 4px; }
.limits .bar { width: 48px; height: 6px; border-radius: 3px; background: var(--border); overflow: hidden;
  position: relative; }
.limits .bar i { position: absolute; inset: 0 auto 0 0; background: var(--ok); }
.limits .bar i.hi { background: var(--warn); } .limits .bar i.full { background: var(--err); }
.limits .bar b { position: absolute; top: -2px; bottom: -2px; width: 2px; background: var(--text); }
#blocked { max-width: 900px; margin: 8px auto; padding: 8px 12px; border-radius: 8px;
  border: 2px solid var(--err); color: var(--err); background: var(--panel); }
#blocked::before { content: "Gesperrt: "; font-weight: 600; }

#context { cursor: help; }
#suggest { list-style: none; margin: 0 auto; padding: 4px; max-width: 900px; width: calc(100% - 32px);
  max-height: 40vh; overflow-y: auto; background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: 0 4px 16px rgb(0 0 0 / .15); }
#suggest li { padding: 4px 8px; border-radius: 5px; cursor: pointer; display: flex; gap: 10px; }
#suggest li b { font-family: var(--mono); font-weight: 600; white-space: nowrap; }
#suggest li span { color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#suggest li.active { background: var(--user); }

/* Kopfzeile: am Desktop eine Zeile, am Handy eingeklappt */
header .hbar, header .more { display: contents; }
.mobile-only { display: none; }
#btn-more { padding: 4px 12px; }
#ctx-mini { font-size: 12px; color: var(--muted); }
@media (max-width: 700px) {
  header { display: block; padding: 6px 12px; }
  header .hbar { display: flex; align-items: center; gap: 8px; }
  header .hbar h1 { font-size: 16px; margin-right: 0; }
  .mobile-only { display: inline-block; }
  #btn-more { margin-left: auto; }
  header .more { display: none; }
  header.open .more { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding-top: 8px; }
  header.open .more .spacer { display: none; }
  header.open #btn-more { transform: rotate(180deg); }
  main { padding: 12px; }
  #composer { padding: 2px 12px 8px; }
}

/* Griff über dem Eingabefeld */
#grip { height: 16px; display: flex; align-items: center; justify-content: center; cursor: ns-resize;
  touch-action: none; background: var(--panel); border-top: 1px solid var(--border); user-select: none; }
#grip span { width: 44px; height: 4px; border-radius: 2px; background: var(--border); }
#grip:hover span, #grip.dragging span { background: var(--muted); }

/* Werkzeugaufrufe: aufeinanderfolgende zu einem eingeklappten Block */
details.toolgroup { border: 1px solid var(--border); border-radius: 8px; padding: 4px 10px; font-size: 13px; }
details.toolgroup > summary { cursor: pointer; color: var(--muted); list-style-position: inside; }
details.toolgroup > summary .names { color: var(--text); }
details.toolgroup > summary .run { color: var(--warn); }
details.toolgroup > summary .bad { color: var(--err); }
details.toolgroup .items { display: flex; flex-direction: column; gap: 6px; margin: 6px 0 4px; }
details.toolgroup .items details.tool { margin: 0; }
.dl { font-size: 12px; margin: 4px 0; }

/* Anhänge */
#btn-attach { padding: 6px 10px; }
#attachments { display: flex; flex-wrap: wrap; gap: 6px; padding: 4px 16px 0; background: var(--panel); }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; padding: 2px 8px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--bg); color: var(--text); }
.chip a { color: inherit; }
.chip button { border: 0; background: none; padding: 0 2px; color: var(--muted); cursor: pointer; }
.chip.busy { opacity: .6; }
.msg.user .files { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 6px; white-space: normal; }
.msg img.thumb { max-width: 240px; max-height: 180px; border-radius: 6px; display: block; margin-top: 6px; }
body.dragging main { outline: 3px dashed var(--accent); outline-offset: -8px; }
a.file { color: var(--accent); }

/* Dateiliste */
#files-dialog { max-width: 700px; width: calc(100% - 32px); border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel); color: var(--text); padding: 12px 16px; }
#files-dialog::backdrop { background: rgb(0 0 0 / .4); }
.dlg-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
#files-list h4 { margin: 12px 0 4px; font-size: 13px; color: var(--muted); }
#files-list .row { display: flex; gap: 10px; font-size: 13px; padding: 3px 0; border-bottom: 1px solid var(--border); }
#files-list .row a { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#files-list .row span { color: var(--muted); white-space: nowrap; }

/* Chatliste */
#sidebar { width: 250px; flex: none; display: flex; flex-direction: column; gap: 8px; padding: 10px;
  border-right: 1px solid var(--border); background: var(--panel); overflow-y: auto; }
#btn-new { width: 100%; }
#chat-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
#chat-list li { display: flex; align-items: center; gap: 4px; border-radius: 6px; padding: 5px 6px; cursor: pointer; }
#chat-list li:hover { background: var(--tool); }
#chat-list li.active { background: var(--user); }
#chat-list .t { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
#chat-list .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; background: transparent; }
#chat-list .dot.run { background: var(--ok); }
#chat-list .dot.busy { background: var(--warn); }
#chat-list .dot.ask { background: var(--err); }
#chat-list li button { border: 0; background: none; padding: 0 3px; color: var(--muted); opacity: 0; font-size: 13px; }
#chat-list li:hover button, #chat-list li.active button { opacity: 1; }
#btn-chats { padding: 4px 10px; }
@media (min-width: 701px) {
  body.chats-collapsed #sidebar { display: none; }
}
#chat-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 40vw; }
#files-list .row button { border: 0; background: none; padding: 0 4px; color: var(--muted); cursor: pointer; }
@media (max-width: 700px) {
  #chat-title { max-width: 45vw; }
  #sidebar { position: fixed; z-index: 20; top: 0; bottom: 0; left: 0; width: 80vw; max-width: 320px;
    transform: translateX(-100%); transition: transform .15s; box-shadow: 0 0 24px rgb(0 0 0 / .3); }
  body.chats-open #sidebar { transform: none; }
  #chat-list li button { opacity: 1; }
}

/* Postfach einrichten */
#email-dialog { max-width: 460px; width: calc(100% - 32px); border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel); color: var(--text); padding: 12px 16px; }
#email-dialog::backdrop { background: rgb(0 0 0 / .4); }
#email-form label { display: flex; flex-direction: column; gap: 4px; margin: 8px 0; font-size: 14px; }
#email-form input { padding: 7px 8px; font: inherit; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px; }
#email-form .actions { display: flex; justify-content: flex-end; margin-top: 8px; }
.hint { font-size: 12px; color: var(--muted); margin: 6px 0; }
#email-result.ok { color: var(--ok); } #email-result.err { color: var(--err); }

/* Spracheingabe */
#btn-mic { padding: 6px 10px; }
#btn-mic.rec { background: var(--err); border-color: var(--err); color: #fff; animation: mic-pulse 1.2s ease-in-out infinite; }
@keyframes mic-pulse { 50% { opacity: .55; } }
@media (prefers-reduced-motion: reduce) { #btn-mic.rec { animation: none; } }

/* Handy: Textfeld in voller Breite, Anhang, Mikrofon und Senden darunter */
@media (max-width: 700px) {
  #composer { flex-wrap: wrap; row-gap: 6px; }
  #composer textarea { order: 0; flex: 1 1 100%; }
  #btn-attach, #btn-mic { order: 1; padding: 4px 12px; }
  #btn-send { order: 2; margin-left: auto; padding: 6px 18px; }
}