:root {
  --bg: #f6f7f9; --panel: #fff; --ink: #1c2330; --muted: #6b7382; --line: #e3e6eb;
  --accent: #2563eb; --hot: #c2410c; --ok: #15803d; --in: #eef2ff; --out: #ecfdf5; --note: #fef9c3;
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); }
button { font: inherit; cursor: pointer; border: 1px solid var(--line); background: var(--panel); border-radius: 6px; padding: 6px 12px; }
button.link { border: 0; background: none; color: var(--accent); padding: 4px 0; }
.muted { color: var(--muted); }
.top { display: flex; gap: 12px; align-items: center; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
.top #logout { margin-left: auto; }
.notice { margin: 12px 16px; padding: 10px 12px; border-radius: 6px; background: #fff7ed; color: var(--hot); }
.login { max-width: 420px; margin: 15vh auto; padding: 24px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; text-align: center; }
.desk { display: grid; grid-template-columns: minmax(280px, 26%) 1fr minmax(260px, 24%); gap: 1px; background: var(--line); height: calc(100vh - 45px); }
.pane { background: var(--panel); overflow-y: auto; padding: 12px; }
.views { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.views button.active { border-color: var(--accent); color: var(--accent); }
.tickets, .messages { list-style: none; margin: 0; padding: 0; }
.tickets li { padding: 8px; border-bottom: 1px solid var(--line); cursor: pointer; }
.tickets li:hover, .tickets li.active { background: var(--bg); }
.tickets .line1 { display: flex; justify-content: space-between; gap: 8px; }
.tickets .preview { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.badge { font-size: 12px; padding: 0 6px; border-radius: 10px; background: var(--bg); color: var(--muted); }
.badge.hot { background: #ffedd5; color: var(--hot); }
.ticket-head { padding-bottom: 8px; border-bottom: 1px solid var(--line); margin-bottom: 8px; }
.messages li { max-width: 80%; margin: 6px 0; padding: 8px 10px; border-radius: 8px; white-space: pre-wrap; word-wrap: break-word; }
.messages li.in { background: var(--in); }
.messages li.out { background: var(--out); margin-left: auto; }
.messages li.note { background: var(--note); margin-left: auto; }
.messages li.system { background: none; color: var(--muted); font-size: 12px; max-width: 100%; text-align: center; }
.messages .meta { display: block; font-size: 12px; color: var(--muted); margin-top: 4px; }
.card h3 { margin: 12px 0 4px; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.card dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 2px 10px; }
.card dt { color: var(--muted); }
.card dd { margin: 0; word-break: break-word; }
@media (max-width: 900px) {
  .desk { grid-template-columns: 1fr; height: auto; }
  .pane { max-height: none; }
}