:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --ink: #1b2330;
  --muted: #5d6878;
  --line: #e3e7ed;
  --accent: #2456d6;
  --accent-soft: #e8eefc;
  --green: #1d7a46;
  --green-soft: #e3f4ea;
  --amber: #9a5b00;
  --amber-soft: #fdf1dc;
  --red: #b42318;
  --red-soft: #fde8e6;
  --gray-soft: #eef0f3;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 30, 50, .06), 0 2px 8px rgba(20, 30, 50, .04);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.25; margin-block: 0 .4em; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: 1rem; }
p { margin-block: 0 .8em; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

.demo-bar {
  background: #1b2330;
  color: #dfe5ee;
  font-size: .8rem;
  text-align: center;
  padding-block: 6px;
  padding-inline: 16px;
}
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding-block: 12px;
}
.brand { font-weight: 700; font-size: 1.05rem; }
.brand small { display: block; font-weight: 400; color: var(--muted); font-size: .8rem; }
.wrap { max-width: 1100px; margin-inline: auto; padding-inline: 16px; }
main.wrap { padding-block: 20px 40px; }

.page-head { margin-block-end: 16px; }
.page-head p { color: var(--muted); max-width: 680px; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding-block: 16px;
  padding-inline: 16px;
  margin-block-end: 16px;
  min-width: 0;
}
.card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-block-end: 12px;
}
.card-head h2 { margin: 0; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-block-end: 16px;
}
.stat {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding-block: 12px;
  padding-inline: 14px;
}
.stat .label { font-size: .8rem; color: var(--muted); }
.stat .value { font-size: 1.35rem; font-weight: 700; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding-block: 6px;
  padding-inline: 12px;
  font: inherit;
  font-size: .85rem;
  cursor: pointer;
}
.chip[aria-pressed="true"], .chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.chip .count { opacity: .75; margin-inline-start: 4px; }

.tabs { display: flex; flex-wrap: wrap; gap: 4px; border-bottom: 1px solid var(--line); margin-block-end: 16px; }
.tab {
  border: 0;
  background: none;
  font: inherit;
  font-weight: 600;
  color: var(--muted);
  padding-block: 10px;
  padding-inline: 12px;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.btn {
  display: inline-block;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  padding-block: 8px;
  padding-inline: 14px;
  font: inherit;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn.secondary { background: var(--surface); color: var(--accent); }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn.small { padding-block: 5px; padding-inline: 10px; font-size: .8rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }

.badge {
  display: inline-block;
  border-radius: 999px;
  padding-block: 2px;
  padding-inline: 9px;
  font-size: .78rem;
  font-weight: 600;
  white-space: nowrap;
  background: var(--gray-soft);
  color: var(--muted);
}
.badge.blue { background: var(--accent-soft); color: var(--accent); }
.badge.green { background: var(--green-soft); color: var(--green); }
.badge.amber { background: var(--amber-soft); color: var(--amber); }
.badge.red { background: var(--red-soft); color: var(--red); }

/* Responsive table: a table on desktop, stacked cards on phones */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td {
  text-align: left;
  padding-block: 10px;
  padding-inline: 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.table th { font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
.table tbody tr.clickable { cursor: pointer; }
.table tbody tr.clickable:hover { background: #f9fafc; }
.table tr.selected { background: var(--accent-soft) !important; }
.num { text-align: right !important; font-variant-numeric: tabular-nums; }

@media (max-width: 720px) {
  .table thead { display: none; }
  .table, .table tbody, .table tr, .table td { display: block; width: 100%; }
  .table tr {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-block-end: 10px;
    padding-block: 6px;
    padding-inline: 12px;
    background: var(--surface);
  }
  .table td {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 4px 12px;
    border: 0;
    padding-block: 5px;
    padding-inline: 0;
    text-align: right;
  }
  .table td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: .8rem;
    text-align: left;
  }
  .table td.num { text-align: right; }
}

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
label.field { display: block; font-size: .85rem; font-weight: 600; }
label.field span.hint { font-weight: 400; color: var(--muted); }
input, select, textarea {
  display: block;
  width: 100%;
  margin-block-start: 4px;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #cfd5de;
  border-radius: 8px;
  padding-block: 9px;
  padding-inline: 10px;
}
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.check-row { display: flex; flex-wrap: wrap; gap: 8px; margin-block-start: 6px; }
.check-row label {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding-block: 7px;
  padding-inline: 10px;
  font-weight: 400;
  font-size: .9rem;
  background: #fff;
}
.check-row input { width: auto; margin: 0; }

/* Message bubbles */
.timeline { list-style: none; margin: 0; padding-inline: 0; padding-block: 0; }
.timeline li {
  position: relative;
  padding-inline-start: 22px;
  padding-block-end: 16px;
  border-inline-start: 2px solid var(--line);
  margin-inline-start: 6px;
}
.timeline li:last-child { border-color: transparent; }
.timeline li::before {
  content: "";
  position: absolute;
  inset-inline-start: -7px;
  inset-block-start: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--accent);
}
.timeline li.pending::before { border-color: #b8c0cc; }
.timeline li.reply::before { background: var(--green); border-color: var(--green); }
.timeline .when { font-size: .8rem; color: var(--muted); }
.bubble {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding-block: 10px;
  padding-inline: 12px;
  margin-block-start: 6px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.bubble.in { background: var(--green-soft); border-color: #c6e7d3; }
.bubble.later { opacity: .65; border-style: dashed; }

.alert {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  border-radius: 8px;
  padding-block: 10px;
  padding-inline: 12px;
  margin-block-end: 8px;
  border: 1px solid;
}
.alert.red { background: var(--red-soft); border-color: #f6c7c2; color: #7a1a12; }
.alert.amber { background: var(--amber-soft); border-color: #f2d8a8; color: #6b4000; }
.alert.green { background: var(--green-soft); border-color: #c6e7d3; color: #14532d; }
.alert strong { font-weight: 700; }
.alert .grow { flex: 1 1 220px; min-width: 0; }

.split { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); } }

.empty { color: var(--muted); text-align: center; padding-block: 24px; }

.toast {
  position: fixed;
  inset-inline: 16px;
  inset-block-end: 16px;
  max-width: 420px;
  margin-inline: auto;
  background: #1b2330;
  color: #fff;
  border-radius: 10px;
  padding-block: 12px;
  padding-inline: 14px;
  font-size: .9rem;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .2);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .2s, transform .2s;
  pointer-events: none;
  z-index: 50;
}
.toast.show { opacity: 1; transform: none; }

.footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .82rem;
}
.footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding-block: 16px;
}
.back { font-size: .85rem; text-decoration: none; }
.kv { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 4px 14px; font-size: .9rem; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: end; margin-block-end: 14px; }
.toolbar > * { flex: 1 1 160px; min-width: 0; }
.toolbar > .chips { flex: 1 1 100%; }