* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f4f7fb;
  color: #172033;
  font-family: Arial, "Microsoft YaHei", sans-serif;
}

.wrap {
  width: min(860px, 100%);
  margin: 0 auto;
  padding: 18px;
}

.panel {
  background: #fff;
  border: 1px solid #dbe3ef;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 14px;
}

h1 {
  margin: 0 0 6px;
  font-size: 22px;
}

.muted,
.status {
  color: #65758b;
  font-size: 14px;
}

.upload-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 10px;
  background: #fff;
}

button {
  border: 0;
  border-radius: 6px;
  padding: 10px 14px;
  color: #fff;
  background: #2563eb;
  cursor: pointer;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.search-row,
.actions {
  display: flex;
  gap: 10px;
}

.card {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #f8fafc;
  line-height: 1.7;
}

.empty {
  color: #64748b;
}

.checkins {
  margin-top: 10px;
  display: grid;
  gap: 6px;
}

.checkin {
  padding: 8px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
}

#message {
  margin-top: 12px;
}