:root {
  --bg: #f4f5f7; --panel: #fff; --text: #1c1f23; --muted: #6b7280; --line: #e3e6ea;
  --accent: #0f6e6e; --accent-soft: #e3f1f1; --warn: #b45309; --warn-soft: #fef3c7; --bad: #c0392b;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111417; --panel: #1a1e22; --text: #e6e8ea; --muted: #9aa2ab; --line: #2b3137; --accent: #3fb3b3; --accent-soft: #1d3434; --warn: #f2b65a; --warn-soft: #3a2f17; }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
button { font: inherit; cursor: pointer; border: 1px solid var(--accent); background: var(--accent); color: #fff; border-radius: 8px; padding: 6px 12px; }
button.ghost { background: none; color: var(--text); border-color: var(--line); }
input, select, textarea { font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
[hidden] { display: none !important; }

.login { display: flex; align-items: center; justify-content: center; height: 100%; padding: 16px; }
.login form { background: var(--panel); border: 1px solid var(--line); padding: 28px; border-radius: 14px; width: 320px; display: flex; flex-direction: column; gap: 10px; }
.login h1 { margin: 0 0 6px; font-size: 20px; }
.err { color: var(--bad); min-height: 18px; margin: 0; font-size: 13px; }

.app { display: flex; flex-direction: column; height: 100%; }
.top { display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.top nav { display: flex; gap: 4px; margin-right: auto; }
.tab { background: none; color: var(--text); border-color: transparent; }
.tab.on { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-soft); }
.away { display: flex; gap: 6px; align-items: center; color: var(--muted); }
#me { color: var(--muted); }

.main { flex: 1; display: flex; min-height: 0; }
.list { width: 330px; border-right: 1px solid var(--line); overflow-y: auto; background: var(--panel); }
.item { padding: 11px 14px; border-bottom: 1px solid var(--line); cursor: pointer; display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; }
.item:hover { background: var(--bg); }
.item.sel { background: var(--accent-soft); }
.item .t { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item .s { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; grid-column: 1 / -1; }
.item .meta { font-size: 11px; color: var(--muted); text-align: right; }
.pill { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 10px; background: var(--line); color: var(--text); margin-right: 4px; }
.pill.waiting { background: var(--warn-soft); color: var(--warn); font-weight: 600; }
.pill.human { background: var(--accent-soft); color: var(--accent); }
.pill.on { background: #d7f5dd; color: #166534; }
.unread { background: var(--bad); color: #fff; border-radius: 10px; padding: 0 7px; font-size: 11px; font-weight: 600; }

.thread { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.empty { margin: auto; color: var(--muted); }
.thHead { padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--panel); display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.thHead .info { margin-right: auto; }
.thHead .info small { color: var(--muted); display: block; }
.msgs { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 8px; }
.m { max-width: 72%; padding: 9px 12px; border-radius: 12px; white-space: pre-wrap; word-wrap: break-word; background: var(--panel); border: 1px solid var(--line); }
.m.visitor { align-self: flex-start; }
.m.ai, .m.operator { align-self: flex-end; background: var(--accent-soft); border-color: var(--accent-soft); }
.m.system { align-self: center; background: none; border: 0; color: var(--muted); font-size: 12px; }
.m .who { font-size: 11px; color: var(--muted); margin-bottom: 3px; }
.m .tr { margin-top: 6px; padding-top: 6px; border-top: 1px dashed var(--line); color: var(--muted); font-size: 13px; }
.m img { max-width: 260px; border-radius: 8px; display: block; }
.m a { color: var(--accent); }
.notice { margin: 0 16px 8px; padding: 8px 12px; background: var(--warn-soft); color: var(--warn); border-radius: 8px; font-size: 13px; }
.typing { padding: 0 16px 4px; color: var(--muted); font-size: 12px; min-height: 18px; }
.compose { display: flex; gap: 8px; padding: 10px 16px 14px; border-top: 1px solid var(--line); background: var(--panel); align-items: flex-end; }
.compose textarea { flex: 1; resize: vertical; min-height: 44px; max-height: 200px; }
.compose .hint { font-size: 11px; color: var(--muted); }
.leadBox { padding: 8px 16px; font-size: 13px; color: var(--muted); border-bottom: 1px solid var(--line); background: var(--panel); }

.leads { flex: 1; overflow: auto; padding: 16px; }
.leadsHead { display: flex; align-items: center; justify-content: space-between; }
table { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); font-size: 13px; }
th { color: var(--muted); font-weight: 600; }

.history { width: 380px; display: flex; flex-direction: column; }
.hfilters { padding: 12px; display: flex; flex-direction: column; gap: 8px; border-bottom: 1px solid var(--line); }
.hrow { display: flex; gap: 8px; align-items: center; }
.hrow label { display: flex; flex-direction: column; font-size: 11px; color: var(--muted); flex: 1; }
.hrow select { flex: 1; }
.hemail { font-size: 12px; background: var(--accent-soft); color: var(--accent); padding: 6px 8px; border-radius: 8px; display: flex; justify-content: space-between; align-items: center; }
.hemail button { padding: 0 6px; background: none; border: 0; color: var(--accent); font-size: 16px; }
.hcount { padding: 8px 14px; font-size: 12px; color: var(--muted); }
#hRows { flex: 1; overflow-y: auto; }
.hpager { display: flex; justify-content: space-between; align-items: center; padding: 8px 12px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.hpager button:disabled { opacity: .4; cursor: default; }
.linkish { background: none; border: 0; color: var(--accent); padding: 0; text-decoration: underline; font-size: 13px; }

@media (max-width: 760px) {
  .history { width: 100%; }
  .main.inThread .history { display: none; }
  .list { width: 100%; }
  .main.inThread .list { display: none; }
  .main:not(.inThread) .thread { display: none; }
  .m { max-width: 90%; }
}