:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #667085;
  --line: #d0d5dd;
  --primary: #1d4ed8;
  --danger: #b42318;
  --success: #027a48;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.page {
  width: min(960px, calc(100% - 32px));
  margin: 32px auto;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}

.stacked-panel {
  margin-top: 18px;
}

.form {
  display: grid;
  gap: 16px;
  max-width: 420px;
}

.inline-form {
  max-width: 520px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.95rem;
}

input,
select {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
}

.checkbox-label input {
  min-height: auto;
}

button,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border: 0;
  border-radius: 6px;
  padding: 0 14px;
  background: var(--primary);
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  text-decoration: none;
}

.button-link.secondary {
  background: #475467;
}

button.danger {
  background: var(--danger);
}

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

.secondary-button {
  background: #475467;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.compact-actions {
  margin-top: 0;
}

.filters {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 14px;
}

.filter-actions {
  align-items: end;
  margin-top: 0;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.metric-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.metric-card span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.metric-card strong {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
}

@media (max-width: 820px) {
  .filters,
  .metric-grid,
  .scan-layout,
  .details-grid {
    grid-template-columns: 1fr;
  }

  .section-header {
    display: grid;
  }
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 12px 10px;
  text-align: left;
}

th {
  color: var(--muted);
  font-weight: 700;
}

.row-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.row-actions form {
  margin: 0;
}

.details {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.details div {
  display: grid;
  gap: 4px;
}

.details dt {
  color: var(--muted);
  font-weight: 700;
}

.details dd {
  margin: 0;
}

.details-grid {
  grid-template-columns: repeat(2, minmax(180px, 1fr));
}

.scan-layout {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(280px, 420px);
  gap: 20px;
  align-items: start;
}

.scanner-box {
  display: grid;
  gap: 10px;
}

.scanner-video {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101828;
  object-fit: cover;
}

.scanner-status {
  color: var(--muted);
  font-size: 0.92rem;
}

.segmented-control {
  display: inline-flex;
  gap: 8px;
}

.segmented-control .active {
  background: var(--primary);
}

.qr-panel {
  max-width: 620px;
}

.qr-preview {
  display: grid;
  place-items: center;
  margin: 22px 0;
}

.qr-preview img {
  width: min(280px, 100%);
  height: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #ffffff;
}

.messages {
  margin-bottom: 16px;
}

.message {
  margin: 0 0 8px;
  border-radius: 6px;
  padding: 10px 12px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.message.error {
  color: var(--danger);
}

.message.success {
  color: var(--success);
}

.help-text {
  margin: -6px 0 0;
  color: var(--muted);
}

.login-download {
  margin-top: 18px;
}

.oauth-actions {
  margin-top: 18px;
}

.login-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
}

.download-list {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.download-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.download-item h2 {
  margin: 0 0 10px;
}

.muted-note {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--muted);
}