:root {
  --bg: #f6f7f9; --panel: #ffffff; --ink: #1d2433; --muted: #5d6779; --line: #e3e6ec; --accent: #2457c5; --accent-soft: #e8eefc;
  --note: #fff7d6; --note-line: #f0d97a; --customer: #f3f5f8; --agent: #ffffff; --mark: #ffe58a;
  --ok: #1f7a4d; --ok-soft: #e3f4ea; --warn: #9a5b00; --warn-soft: #fdf0dc; --bad: #a23b3b; --bad-soft: #fbe7e7; --gray-soft: #eef0f3;
  --radius: 10px; --shadow: 0 1px 2px rgb(16 24 40 / 6%);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b; --panel: #1a1e26; --ink: #e6e9ef; --muted: #9aa3b2; --line: #2a303b; --accent: #7aa2ff; --accent-soft: #1e2a45;
    --note: #2e2914; --note-line: #6b5a1c; --customer: #1f242d; --agent: #1a1e26; --mark: #6b5b12;
    --ok: #6fd3a0; --ok-soft: #173327; --warn: #f2b45a; --warn-soft: #3a2b12; --bad: #f08c8c; --bad-soft: #3a1d1d; --gray-soft: #262b35;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
mark { background: var(--mark); color: inherit; padding: 0 1px; border-radius: 2px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

header.top { position: sticky; top: 0; z-index: 5; background: var(--panel); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 20px; height: 56px; }
.brand { font-weight: 650; color: var(--ink); white-space: nowrap; }
.brand span { color: var(--accent); }
nav.main { display: flex; gap: 14px; }
nav.main a { color: var(--muted); font-weight: 500; }
nav.main a.on { color: var(--ink); }
form.qbar { flex: 1; display: flex; max-width: 640px; min-width: 0; margin-left: auto; }
form.qbar input { flex: 1; min-width: 0; height: 36px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px 0 0 8px; background: var(--bg); color: var(--ink); font: inherit; }
form.qbar button { height: 36px; padding: 0 14px; border: 1px solid var(--accent); background: var(--accent); color: #fff; border-radius: 0 8px 8px 0; font: inherit; cursor: pointer; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
main.wrap { padding-top: 20px; padding-bottom: 40px; }

.cols { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 24px; align-items: start; }
.cols.ticket { grid-template-columns: minmax(0, 1fr) 320px; }
@media (max-width: 900px) { .cols, .cols.ticket { grid-template-columns: minmax(0, 1fr); } }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.facets .panel { padding: 12px 14px; margin-bottom: 12px; }
.facets h3 { margin: 0 0 6px; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.facets a { display: flex; justify-content: space-between; gap: 8px; padding: 3px 6px; margin: 0 -6px; border-radius: 6px; color: var(--ink); }
.facets a:hover { background: var(--gray-soft); text-decoration: none; }
.facets a.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.facets a .n { color: var(--muted); font-variant-numeric: tabular-nums; }

.resbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-size: 13px; }
.sort a { margin-left: 10px; color: var(--muted); }
.sort a.on { color: var(--ink); font-weight: 600; }

.hit { padding: 14px 16px; border-bottom: 1px solid var(--line); }
.hit:last-child { border-bottom: 0; }
.hit .title { font-size: 16px; font-weight: 600; }
.hit .title .id { color: var(--muted); font-weight: 500; margin-right: 6px; }
.hit .meta { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; margin-top: 4px; font-size: 13px; color: var(--muted); }
.hit .snip { margin-top: 6px; font-size: 14px; color: var(--ink); }
.hit .snip .lbl { color: var(--muted); font-size: 12px; margin-right: 4px; }

.badge { display: inline-block; padding: 1px 8px; border-radius: 6px; font-size: 12px; font-weight: 600; background: var(--gray-soft); color: var(--muted); }
.badge.Offen, .badge.Wartend { background: var(--warn-soft); color: var(--warn); }
.badge.Gelöst, .badge.Geschlossen { background: var(--ok-soft); color: var(--ok); }
.badge.Gelöscht, .badge.Spam, .badge.Dringend { background: var(--bad-soft); color: var(--bad); }
.badge.Archiviert { background: var(--gray-soft); color: var(--muted); }
.badge.Hoch { background: var(--warn-soft); color: var(--warn); }

.articles { margin-bottom: 16px; padding: 12px 16px; }
.articles h3 { margin: 0 0 8px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.articles li { margin: 4px 0; }
.pager { display: flex; gap: 6px; justify-content: center; margin-top: 16px; }
.pager a, .pager span { padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel); }
.pager span.cur { background: var(--accent); color: #fff; border-color: var(--accent); }
.empty { padding: 40px; text-align: center; color: var(--muted); }

.thead { margin-bottom: 16px; }
.thead h1 { font-size: 22px; margin: 6px 0 8px; line-height: 1.3; }
.thead .id { color: var(--muted); font-weight: 500; }
.thead .badges { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.msg { display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 12px; margin-bottom: 14px; }
.avatar { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; font-weight: 650; font-size: 14px; background: var(--gray-soft); color: var(--muted); }
.msg.agent .avatar { background: var(--accent-soft); color: var(--accent); }
.msg.note .avatar { background: var(--note); color: var(--warn); }
.bubble { border: 1px solid var(--line); border-radius: var(--radius); background: var(--agent); overflow: hidden; }
.msg.customer .bubble { background: var(--customer); }
.msg.note .bubble { background: var(--note); border-color: var(--note-line); }
.bubble .who { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 12px; padding: 10px 14px 0; font-size: 13px; }
.bubble .who b { font-size: 14px; }
.bubble .kind { color: var(--muted); }
.bubble .to { padding: 2px 14px 0; font-size: 12px; color: var(--muted); }
.mbody { padding: 10px 14px 12px; overflow-x: auto; contain: content; word-wrap: break-word; }
.mbody img { max-width: 100%; height: auto; }
.mbody table { max-width: 100%; }
.mbody p { margin: 0 0 .6em; }
.files { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 14px 12px; }
.file { display: inline-flex; gap: 6px; align-items: center; padding: 4px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); font-size: 13px; }
.file.missing { color: var(--muted); border-style: dashed; }

.side .panel { padding: 14px 16px; margin-bottom: 12px; }
.side h3 { margin: 0 0 8px; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
dl.props { display: grid; grid-template-columns: max-content 1fr; gap: 6px 12px; margin: 0; font-size: 14px; }
dl.props dt { color: var(--muted); }
dl.props dd { margin: 0; overflow-wrap: anywhere; }
.tags { display: flex; flex-wrap: wrap; gap: 4px; }
.tag { padding: 1px 8px; border-radius: 6px; background: var(--gray-soft); font-size: 12px; }

.kb h2 { font-size: 18px; margin: 18px 0 8px; }
.kb h3 { font-size: 14px; margin: 12px 0 4px; color: var(--muted); }
.kb ul { margin: 0; padding-left: 18px; }
.article { padding: 20px 24px; }
.article h1 { margin-top: 0; }
.tagform input { width: 100%; height: 32px; margin: 2px 0 8px; padding: 0 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); font: inherit; font-size: 14px; }
a.tag { color: var(--ink); }
a.tag:hover { background: var(--accent-soft); color: var(--accent); text-decoration: none; }

/* filter panel: a plain sidebar on desktop, a collapsible bar on phones */
details.filterbox > summary { display: none; }
@media (max-width: 900px) {
  details.filterbox { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 12px; }
  details.filterbox > summary { display: flex; align-items: center; gap: 8px; height: 44px; font-weight: 600; cursor: pointer; list-style: none; }
  details.filterbox > summary::after { content: "▾"; margin-left: auto; color: var(--muted); }
  details.filterbox[open] > summary::after { content: "▴"; }
  details.filterbox .panel { border: 0; box-shadow: none; padding: 8px 0; margin: 0; border-top: 1px solid var(--line); border-radius: 0; }
}
@media (max-width: 700px) {
  .wrap { padding: 0 12px; }
  header.top .wrap { flex-wrap: wrap; height: auto; gap: 8px 16px; padding-top: 10px; padding-bottom: 10px; }
  form.qbar { order: 3; flex-basis: 100%; max-width: none; margin-left: 0; }
  form.qbar input { font-size: 16px; } /* no zoom-in on iOS */
  .tagform input { font-size: 16px; }
  .resbar { align-items: flex-start; }
  .hit { padding: 12px; }
  .thead h1 { font-size: 19px; }
  .msg { grid-template-columns: 1fr; }
  .msg .avatar { display: none; }
  .bubble .who { flex-direction: column; }
}

/* login / logout */
form.logout button { height: 32px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--muted); font: inherit; font-size: 14px; cursor: pointer; }
form.logout button:hover { color: var(--ink); border-color: var(--muted); }
.loginbox { max-width: 380px; margin: 12vh auto 0; padding: 28px; }
.loginbox .brand.big { font-size: 22px; margin-bottom: 20px; }
.loginbox form { display: grid; gap: 14px; }
.loginbox label { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
.loginbox input { height: 42px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); font: inherit; font-size: 16px; }
.loginbox button { height: 42px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; font: inherit; font-weight: 600; cursor: pointer; }
.loginbox .error { padding: 8px 12px; border-radius: 8px; background: var(--bad-soft); color: var(--bad); font-size: 14px; }
@media (max-width: 700px) { form.logout { margin-left: auto; } }