:root {
  --bg: #f6f7f9; --card: #fff; --text: #1c2330; --muted: #667085; --border: #e3e6ec;
  --brand: #1f5eff; --brand-text: #fff; --danger: #c62828; --ins: #e6f6ea; --del: #fdeaea;
  --radius: 10px;
}
:root[data-theme="dark"] {
  --bg: #12151b; --card: #1b2029; --text: #e8ebf1; --muted: #9aa4b5; --border: #2a303c;
  --brand: #5b8cff; --brand-text: #0b1020; --danger: #ff6b6b; --ins: #16301f; --del: #3a1b1b;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151b; --card: #1b2029; --text: #e8ebf1; --muted: #9aa4b5; --border: #2a303c;
    --brand: #5b8cff; --brand-text: #0b1020; --danger: #ff6b6b; --ins: #16301f; --del: #3a1b1b;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--brand); text-decoration: none; }
.muted { color: var(--muted); } .small { font-size: 12px; }
.appbar { display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 10px 20px; background: var(--card); border-bottom: 1px solid var(--border); }
.appbar nav { display: flex; align-items: center; gap: 14px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); }
.lang a { padding: 2px 6px; border-radius: 6px; font-size: 12px; color: var(--muted); }
.lang a.on { background: var(--brand); color: var(--brand-text); }
.icon-btn { background: none; border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); cursor: pointer; padding: 2px 8px; }
.bell { position: relative; }
.badge { background: var(--danger); color: #fff; border-radius: 10px; font-size: 11px;
  padding: 0 6px; position: absolute; top: -8px; right: -12px; }
.container { max-width: 880px; margin: 24px auto; padding: 0 16px; display: grid; gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.narrow { max-width: 380px; margin: 48px auto; }
h1, h2, h3 { margin: 0 0 12px; }
label { display: block; margin-bottom: 12px; font-size: 13px; color: var(--muted); }
input[type=email], input[type=password], input[type=text] {
  display: block; width: 100%; margin-top: 4px; padding: 9px 10px; font: inherit;
  background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 8px; }
.btn { display: inline-block; background: var(--brand); color: var(--brand-text); border: 0;
  border-radius: 8px; padding: 9px 16px; font: inherit; cursor: pointer; }
.btn.small { padding: 4px 12px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.error { color: var(--danger); }
table { width: 100%; border-collapse: collapse; }
td { padding: 10px 6px; border-top: 1px solid var(--border); }
tr:first-child td { border-top: 0; }
.tag { background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  padding: 1px 6px; font-size: 11px; text-transform: uppercase; color: var(--muted); }
.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 10px 0; border-top: 1px solid var(--border); }
.list li:first-child { border-top: 0; }
.list li.unread { border-left: 3px solid var(--brand); padding-left: 10px; }
.editor-page { height: 100vh; display: flex; flex-direction: column; }
.editor-layout { flex: 1; display: flex; min-height: 0; }
.changes { width: 280px; overflow-y: auto; padding: 14px; background: var(--card);
  border-right: 1px solid var(--border); }
.changes del, .changes ins { display: block; text-decoration: none; margin-top: 4px;
  padding: 3px 6px; border-radius: 6px; font-size: 12px; word-break: break-word; }
.changes del { background: var(--del); text-decoration: line-through; }
.changes ins { background: var(--ins); }
#editor-wrap { flex: 1; min-width: 0; }
@media (max-width: 800px) { .changes { display: none; } .appbar .muted { display: none; } }

/* template builder */
.frow { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; padding: 8px 0; border-top: 1px solid var(--border); }
.frow .rules { display: contents; }
label.mini { display: flex; flex-direction: column; gap: 2px; margin: 0; font-size: 11px; }
label.mini input, .frow select { padding: 6px 8px; font: inherit; background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; width: auto; max-width: 150px; }
.fname { max-width: 180px; padding: 6px 8px; }
.ccard { border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; margin: 10px 0; }
.btn.ghost { background: none; color: var(--muted); border: 1px solid var(--border); }
h3 { margin-top: 20px; }