:root {
  --bg: #f3f5f4;
  --surface: #ffffff;
  --surface-2: #f7f9f8;
  --border: #dfe5e2;
  --text: #17201b;
  --muted: #66736c;
  --primary: #128c4a;
  --primary-hover: #0e753d;
  --primary-soft: #e3f4ea;
  --danger: #c0392b;
  --danger-soft: #fbeaea;
  --warn: #a86b00;
  --warn-soft: #fff4dc;
  --bubble-in: #ffffff;
  --bubble-out: #d9fdd3;
  --chat-bg: #efeae2;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0,0,0,.05), 0 2px 8px rgba(0,0,0,.04);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1412; --surface: #171d1a; --surface-2: #1c2420; --border: #2a3430;
    --text: #e7ece9; --muted: #92a098; --primary: #25b064; --primary-hover: #2cc271;
    --primary-soft: #183526; --danger: #ef6b5e; --danger-soft: #3a1d1a; --warn: #e3a93a; --warn-soft: #3a2e15;
    --bubble-in: #1f2a25; --bubble-out: #144d33; --chat-bg: #0c110f;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.45; }
h1, h2, h3 { margin: 0 0 .6em; line-height: 1.25; }
h1 { font-size: 22px; } h2 { font-size: 17px; } h3 { font-size: 14px; margin-top: 1em; }
a { color: var(--primary); }
code { background: var(--surface-2); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; font-size: 12px; }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 12px; margin: .4em 0 1em; }
.error { color: var(--danger); background: var(--danger-soft); padding: 8px 10px; border-radius: 8px; }
[hidden] { display: none !important; }

/* ---------- form controls ---------- */
label { display: block; margin: 0 0 12px; font-weight: 600; font-size: 13px; }
label small { font-weight: 400; color: var(--muted); }
input, select, textarea {
  display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; font-weight: 400;
  color: var(--text); background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); outline-offset: -1px; border-color: transparent; }
input[readonly] { background: var(--surface-2); }
label.check { display: flex; align-items: center; gap: 8px; font-weight: 500; }
label.check input { width: auto; margin: 0; }

button, .button {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 14px;
  font: inherit; font-weight: 600; color: var(--text); background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 8px; cursor: pointer; text-decoration: none; white-space: nowrap;
}
button:hover, .button:hover { border-color: var(--muted); }
button:disabled { opacity: .55; cursor: not-allowed; }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.primary:hover { background: var(--primary-hover); }
button.ghost, .button.ghost { background: transparent; }
button.danger { color: var(--danger); }
button.small { padding: 4px 10px; font-size: 12px; }
button.block { width: 100%; }

.row { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.row > label { margin-bottom: 12px; }
.row.between { justify-content: space-between; align-items: center; }
.row.between h2 { margin: 0; }
.grow { flex: 1 1 180px; }
.copy { display: flex; gap: 6px; margin-top: 4px; }
.copy input { margin: 0; font-family: ui-monospace, Consolas, monospace; font-size: 12px; }

/* ---------- auth pages ---------- */
body.auth { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.auth-card { width: 100%; max-width: 380px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 28px; box-shadow: var(--shadow); }
.auth-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; margin-bottom: 20px; }
.auth-logo img { width: 32px; height: 32px; }
.auth-card form { margin-top: 18px; }

/* ---------- app shell ---------- */
body.app { display: flex; flex-direction: column; height: 100vh; }
.topbar { display: flex; align-items: center; gap: 16px; padding: 8px 16px; background: var(--surface); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; }
.brand img { width: 26px; height: 26px; }
#nav { display: flex; gap: 2px; flex: 1; flex-wrap: wrap; }
#nav button { background: transparent; border: none; color: var(--muted); padding: 8px 12px; }
#nav button.active { color: var(--primary); background: var(--primary-soft); }
.who { display: flex; align-items: center; gap: 10px; color: var(--muted); }
.badge { background: var(--primary); color: #fff; border-radius: 999px; padding: 0 7px; font-size: 11px; line-height: 18px; }
main { flex: 1; min-height: 0; overflow: auto; }
.view { padding: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); min-width: 0; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 16px; align-items: start; }
.sub { border-top: 1px solid var(--border); margin-top: 14px; padding-top: 4px; }
.fields:empty { display: none; }
.fields { background: var(--surface-2); border: 1px dashed var(--border); border-radius: 8px; padding: 12px 12px 2px; margin-bottom: 8px; }
.empty { display: grid; place-items: center; text-align: center; height: 100%; color: var(--text); padding: 24px; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table th { color: var(--muted); font-weight: 600; font-size: 12px; white-space: nowrap; }
.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.pill.ok { background: var(--primary-soft); color: var(--primary); }
.pill.bad { background: var(--danger-soft); color: var(--danger); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }

/* ---------- inbox ---------- */
.view.inbox { display: grid; grid-template-columns: 320px 1fr; padding: 0; height: 100%; }
.conv-list { border-right: 1px solid var(--border); background: var(--surface); display: flex; flex-direction: column; min-height: 0; }
.conv-filters { display: grid; gap: 6px; padding: 10px; border-bottom: 1px solid var(--border); }
.conv-filters input, .conv-filters select { margin: 0; }
#conv-items .c { grid-column: 1 / -1; font-size: 10.5px; color: var(--primary); font-weight: 600; }
.pill.channel { background: var(--primary-soft); color: var(--primary); }
.channel-filter { width: auto; margin: 0; }
.table tr.selected td { background: var(--primary-soft); }
.card.wide { grid-column: 1 / -1; }
.grow2 { flex: 2 1 260px; }
.warn-text { color: var(--warn); }
.row.pair { align-items: stretch; }
.flow-step { border: 1px solid var(--border); border-radius: 8px; padding: 12px 12px 4px; margin-bottom: 10px; background: var(--surface-2); }
.flow-step .row.between { margin-bottom: 8px; }
.flow-options { border-top: 1px dashed var(--border); padding-top: 8px; margin-bottom: 8px; }
.flow-opt .num { align-self: center; font-weight: 700; color: var(--primary); width: 18px; }
.sim { background: var(--chat-bg); border-radius: 8px; min-height: 120px; max-height: 360px; padding: 12px; margin-bottom: 8px; }
.conv-info { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; padding: 6px 14px; background: var(--surface-2); border-bottom: 1px solid var(--border); font-size: 12px; }
.info-list { display: flex; flex-wrap: wrap; gap: 4px; }
.discovered { display: flex; flex-wrap: wrap; gap: 6px; margin: -4px 0 12px; }
#conv-items { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
#conv-items li { padding: 10px 14px; border-bottom: 1px solid var(--border); cursor: pointer; display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; }
#conv-items li:hover { background: var(--surface-2); }
#conv-items li.active { background: var(--primary-soft); }
#conv-items .n { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#conv-items .t { color: var(--muted); font-size: 11px; }
#conv-items .l { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#conv-items li.unread .n, #conv-items li.unread .l { color: var(--text); font-weight: 700; }
.conv { display: flex; flex-direction: column; min-height: 0; background: var(--chat-bg); }
#conv-panel { display: flex; flex-direction: column; height: 100%; min-height: 0; }
.conv-head { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: var(--surface); border-bottom: 1px solid var(--border); }
.conv-id { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.messages { flex: 1; overflow-y: auto; padding: 16px 6%; display: flex; flex-direction: column; gap: 6px; }
.msg { max-width: 70%; padding: 6px 10px 4px; border-radius: 8px; background: var(--bubble-in); box-shadow: 0 1px 1px rgba(0,0,0,.08); white-space: pre-wrap; word-wrap: break-word; }
.msg.out { align-self: flex-end; background: var(--bubble-out); }
.msg .meta { display: flex; justify-content: flex-end; gap: 6px; font-size: 10.5px; color: var(--muted); margin-top: 2px; }
.msg .tag { font-size: 10.5px; color: var(--primary); font-weight: 600; margin-bottom: 2px; }
.msg.failed { outline: 1px solid var(--danger); }
.msg .err { color: var(--danger); font-size: 11px; }
.msg img, .msg video { max-width: 100%; max-height: 300px; border-radius: 6px; display: block; margin-bottom: 4px; }
.msg audio { max-width: 260px; display: block; }
.day { align-self: center; background: var(--surface); color: var(--muted); font-size: 11px; padding: 2px 10px; border-radius: 6px; margin: 6px 0; }
.composer { display: flex; gap: 8px; padding: 10px; background: var(--surface); border-top: 1px solid var(--border); }
.composer textarea { margin: 0; }
.composer-closed { margin: 0; padding: 12px; text-align: center; background: var(--warn-soft); color: var(--warn); font-weight: 600; }
.mobile-only { display: none; }

/* ---------- preview ---------- */
.preview { background: var(--chat-bg); border-radius: 8px; padding: 14px; min-height: 80px; }
.preview .msg { max-width: 100%; }
.preview .btns { display: flex; flex-direction: column; gap: 4px; margin-top: 6px; }
.preview .btns span { text-align: center; color: #0a7cff; background: var(--bubble-in); border-radius: 6px; padding: 6px; font-weight: 600; font-size: 13px; }
.preview .media { background: var(--surface-2); border-radius: 6px; padding: 30px; text-align: center; color: var(--muted); margin-bottom: 6px; }

/* ---------- config ---------- */
.status-list { list-style: none; padding: 0; margin: 0 0 12px; display: grid; gap: 6px; }
.status-list li { display: flex; justify-content: space-between; gap: 10px; }
.steps { padding-left: 18px; color: var(--muted); }
.steps li { margin-bottom: 4px; }
.logs { font-family: ui-monospace, Consolas, monospace; font-size: 11.5px; max-height: 340px; overflow: auto; background: var(--surface-2); border-radius: 8px; padding: 8px; }
.logs div { padding: 2px 0; border-bottom: 1px solid var(--border); word-break: break-word; }
.logs .warn { color: var(--warn); } .logs .error { color: var(--danger); background: none; padding: 2px 0; }
.test-result { margin-top: 12px; display: grid; gap: 6px; }

/* ---------- toasts ---------- */
#toasts { position: fixed; right: 16px; bottom: 16px; display: grid; gap: 8px; z-index: 50; max-width: min(420px, calc(100vw - 32px)); }
.toast { background: var(--text); color: var(--bg); padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); }
.toast.error { background: var(--danger); color: #fff; }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .grid2 { grid-template-columns: 1fr; }
  .view.inbox { grid-template-columns: 1fr; }
  .view.inbox.has-conv .conv-list { display: none; }
  .view.inbox:not(.has-conv) .conv { display: none; }
  .mobile-only { display: inline-flex; }
  .msg { max-width: 88%; }
  .messages { padding: 12px; }
  .who span { display: none; }
}