/*
 * admin.css — minimal clean styling for the Anki admin console.
 * Deliberately dependency-free (no frameworks, no external fonts).
 */

/* ---- Reset / base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #f4f5f7;
  --surface:     #ffffff;
  --border:      #d0d7de;
  --accent:      #0969da;
  --accent-hover:#0550ae;
  --text:        #24292f;
  --text-muted:  #57606a;
  --danger:      #cf222e;
  --warn:        #bf8700;
  --ok:          #1a7f37;
  --radius:      6px;
  --shadow:      0 1px 3px rgba(0,0,0,.12);
  --header-h:    52px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---- Header / nav ---- */
.admin-header {
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.admin-brand {
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}
.admin-brand:hover { color: var(--accent); }

.admin-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.nav-link {
  padding: 4px 10px;
  border-radius: var(--radius);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  transition: background .12s, color .12s;
}
.nav-link:hover { background: var(--bg); color: var(--text); }
.nav-link.active { background: var(--bg); color: var(--accent); font-weight: 500; }

.nav-placeholder {
  cursor: not-allowed;
  opacity: .5;
  user-select: none;
}

.nav-logout { margin-left: auto; color: var(--danger); }
.nav-logout:hover { background: #fff0f0; color: var(--danger); }

/* ---- Main content ---- */
.admin-main {
  max-width: 1200px;
  width: 100%;
  margin: 24px auto;
  padding: 0 16px;
  flex: 1;
}

/* ---- Footer ---- */
.admin-footer {
  text-align: center;
  padding: 12px 16px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

/* ---- Cards ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 24px;
  margin-bottom: 20px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text);
}

/* ---- Page header ---- */
.page-header { margin-bottom: 20px; }
.page-title  { font-size: 20px; font-weight: 600; }

/* ---- Health grid ---- */
.health-grid {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 20px;
  align-items: baseline;
}
.health-grid dt { color: var(--text-muted); font-weight: 500; }
.health-grid dd { font-weight: 400; }

.status-ok    { color: var(--ok); font-weight: 600; }
.status-error { color: var(--danger); font-weight: 600; }

.health-error { color: var(--danger); }
.health-unknown { color: var(--text-muted); font-style: italic; }

.badge {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  vertical-align: middle;
  margin-left: 6px;
}
.badge-warn { background: #fff8c5; color: var(--warn); border: 1px solid #e3b341; }

.monospace { font-family: "SFMono-Regular", Consolas, monospace; font-size: 12px; }

/* ---- Panels list ---- */
.panels-intro { margin-bottom: 14px; color: var(--text-muted); }
.panels-list  { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.panel-item {
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: 13px;
  line-height: 1.5;
}

.panel-pending { opacity: .75; }
.panel-pending strong { color: var(--text-muted); }

/* ---- Login page ---- */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 28px;
}

.login-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  text-align: center;
}

.login-error {
  background: #fff0f0;
  border: 1px solid #f5c2c7;
  color: var(--danger);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin-bottom: 16px;
  font-size: 13px;
}

.login-form   { display: flex; flex-direction: column; gap: 12px; }
.login-label  { font-weight: 500; font-size: 13px; color: var(--text); }

.login-input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.login-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(9,105,218,.12); }

.login-btn {
  padding: 9px 0;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background .12s;
}
.login-btn:hover { background: var(--accent-hover); }

.login-hint {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}
.login-hint code {
  font-family: "SFMono-Regular", Consolas, monospace;
  background: var(--bg);
  padding: 1px 4px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

/* ---- Panel live state ---- */
.panel-live { opacity: 1; }
.panel-live strong { color: var(--accent); }

/* ================================================================
   A6: Card/Note Browser styles
   ================================================================ */

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
  white-space: nowrap;
}
.btn:hover { background: var(--bg); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}
.btn-danger:hover { background: #a0131c; }

.btn-warn {
  background: #fff8c5;
  color: var(--warn);
  border-color: #e3b341;
}
.btn-warn:hover { background: #fef3a0; }

.btn-outline {
  background: transparent;
  border-color: var(--accent);
  color: var(--accent);
}
.btn-outline:hover { background: rgba(9,105,218,.06); }

.btn-sm { padding: 3px 9px; font-size: 12px; }

/* ---- Search bar ---- */
.browse-page-header { display: flex; align-items: center; gap: 12px; }

.browse-search-card { padding: 14px 20px; }

.browse-search-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.browse-search-input {
  flex: 1;
  min-width: 200px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s;
}
.browse-search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(9,105,218,.1);
}

.browse-page-size {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--surface);
}

/* ---- Search help ---- */
.browse-search-help { margin-top: 10px; }

.help-toggle {
  font-size: 12px;
  color: var(--accent);
  cursor: pointer;
  user-select: none;
}
.help-toggle:hover { text-decoration: underline; }

.help-body {
  margin-top: 8px;
  padding: 10px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.help-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.help-list code {
  font-family: "SFMono-Regular", Consolas, monospace;
  background: var(--surface);
  padding: 1px 4px;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--text);
}

/* ---- Status bar ---- */
.browse-status-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 0 8px 2px;
}

.status-sep { color: var(--border); }

/* ---- Bulk toolbar ---- */
.bulk-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  padding: 10px 14px;
  background: #fffde7;
  border: 1px solid #e3b341;
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.bulk-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--warn);
  margin-right: 4px;
  white-space: nowrap;
}

/* ---- Results table ---- */
.browse-results-card { padding: 0; overflow: hidden; }

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

.browse-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.browse-table th,
.browse-table td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

.browse-table th {
  background: var(--bg);
  font-weight: 600;
  font-size: 12px;
  color: var(--text-muted);
  user-select: none;
}

.col-sort::after {
  content: " \25B7";  /* right-pointing triangle placeholder */
  font-size: 10px;
  opacity: .3;
}
.col-sort.sort-asc::after  { content: " \25B2"; opacity: .8; }
.col-sort.sort-desc::after { content: " \25BC"; opacity: .8; }

.browse-table tbody tr:hover { background: var(--bg); }
.result-row { cursor: pointer; }
.row-selected { background: rgba(9,105,218,.06) !important; }

.col-check { width: 28px; padding: 7px 6px; }
.col-first-field { max-width: 260px; overflow: hidden; text-overflow: ellipsis; }

/* ---- State badges ---- */
.state-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.state-new      { background: #dbeafe; color: #1d4ed8; }
.state-learn    { background: #fef9c3; color: #854d0e; }
.state-review   { background: #dcfce7; color: #166534; }
.state-suspended{ background: #f3f4f6; color: #6b7280; }
.state-buried   { background: #ede9fe; color: #6d28d9; }

/* ---- Flag dot ---- */
.flag-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 4px;
  vertical-align: middle;
}

/* ---- Pagination bar ---- */
.pagination-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
}

/* ---- Empty / loading ---- */
.browse-empty,
.browse-loading {
  text-align: center;
  padding: 32px;
  color: var(--text-muted);
  font-size: 14px;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Tool buttons strip ---- */
.browse-tools {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

/* ---- Find & Replace card ---- */
.fnr-card { margin-top: 12px; }
.fnr-form { display: flex; flex-direction: column; gap: 10px; }
.fnr-row  { display: flex; align-items: center; gap: 10px; }
.fnr-label { font-size: 12px; font-weight: 500; color: var(--text-muted); min-width: 80px; }
.fnr-input { flex: 1; padding: 6px 9px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 13px; }
.fnr-options { gap: 20px; }
.check-label { display: flex; align-items: center; gap: 5px; font-size: 13px; cursor: pointer; }
.fnr-scope { font-size: 12px; color: var(--text-muted); font-weight: 400; }

/* ---- Duplicates card ---- */
.dupes-card .dupes-form { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.dupes-results { margin-top: 14px; }
.dupes-list { list-style: none; display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.dupes-list li { font-size: 13px; padding: 6px 10px; background: var(--bg); border-radius: var(--radius); border: 1px solid var(--border); }
.dupe-value { font-family: "SFMono-Regular", Consolas, monospace; font-size: 12px; }
.dupe-search-link { margin-left: 10px; font-size: 12px; }

/* ---- Note editor panel (slide-in overlay) ---- */
.editor-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.35);
  z-index: 200;
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
}
.editor-overlay[hidden] { display: none; }

.editor-panel {
  width: min(600px, 100vw);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  box-shadow: -4px 0 24px rgba(0,0,0,.15);
  overflow: hidden;
}

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.editor-title { font-size: 15px; font-weight: 600; }

.editor-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
}
.editor-close:hover { color: var(--text); }

.editor-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.editor-meta { display: flex; flex-direction: column; gap: 4px; }
.editor-meta-row { font-size: 12px; color: var(--text-muted); }
.meta-label { font-weight: 600; }

.editor-field { display: flex; flex-direction: column; gap: 4px; }
.editor-field-label { font-size: 12px; font-weight: 600; color: var(--text-muted); }
.editor-field-input {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 13px;
  resize: vertical;
}
.editor-field-input:focus { outline: none; border-color: var(--accent); }

.editor-tags-row { display: flex; flex-direction: column; gap: 4px; }

.editor-loading { color: var(--text-muted); font-style: italic; }
.editor-error   { color: var(--danger); }

.editor-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.editor-status { font-size: 12px; }

/* ---- Modal dialogs ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-overlay[hidden] { display: none; }

.modal-box {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0,0,0,.2);
  padding: 24px 28px;
  max-width: 480px;
  width: 100%;
}

.modal-title { font-size: 16px; font-weight: 600; margin-bottom: 12px; }
.modal-body  { font-size: 14px; line-height: 1.55; margin-bottom: 20px; color: var(--text); }

.modal-footer {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ---- Prompt dialog fields ---- */
.prompt-fields { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.prompt-row { display: flex; flex-direction: column; gap: 4px; }
.prompt-row .fnr-label { min-width: unset; font-size: 12px; font-weight: 600; color: var(--text-muted); }
.prompt-row .fnr-input { width: 100%; }

/* ================================================================
   A7: Scheduling page styles
   ================================================================ */

/* ---- Caveat banner ---- */
.sched-caveat-banner {
  background: #fff8c5;
  border: 1px solid #e3b341;
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 13px;
  color: var(--warn);
  margin-bottom: 20px;
  line-height: 1.5;
}

/* ---- Preset card ---- */
.sched-preset-card { padding: 16px 24px; }
.sched-preset-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.sched-preset-id { font-size: 12px; color: var(--text-muted); }
.sched-preset-hint {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- Shared form controls ---- */
.sched-select {
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--surface);
  min-width: 220px;
}
.sched-select-sm { min-width: 140px; }
.sched-select:focus { outline: none; border-color: var(--accent); }

.sched-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 200px;
  white-space: nowrap;
}

.sched-input {
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: inherit;
  width: 260px;
}
.sched-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(9,105,218,.1); }
.sched-input-sm { width: 100px; }

.sched-hint {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}
.sched-hint code {
  font-family: "SFMono-Regular", Consolas, monospace;
  background: var(--bg);
  padding: 1px 3px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

/* ---- Fieldsets ---- */
.sched-fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 16px;
}
.sched-legend {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  padding: 0 6px;
}

/* ---- Form rows ---- */
.sched-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 6px 0;
}
.sched-row-check { align-items: flex-start; padding-top: 8px; }
.sched-row-check .check-label { margin-top: 1px; }

/* ---- Form footer ---- */
.sched-form-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* ---- Status messages ---- */
.sched-status { font-size: 12px; }
.sched-status-ok   { color: var(--ok); }
.sched-status-err  { color: var(--danger); white-space: pre-wrap; }
.sched-status-info { color: var(--text-muted); }

/* ---- FSRS panel ---- */
.sched-fsrs-card { }

.sched-fsrs-status-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.badge-ok   { background: #dcfce7; color: var(--ok);    border: 1px solid #86efac; }
.badge-muted{ background: var(--bg); color: var(--text-muted); border: 1px solid var(--border); }
.badge-err  { background: #fff0f0; color: var(--danger); border: 1px solid #fca5a5; }

.sched-fsrs-enable-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  padding: 10px 14px;
  background: #fffde7;
  border: 1px solid #e3b341;
  border-radius: var(--radius);
}

.sched-fsrs-enabled-note {
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--text-muted);
}
.sched-ok-text { color: var(--ok); font-weight: 600; margin-right: 8px; }

.sched-fsrs-section {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin-top: 14px;
}

.sched-subsection-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

/* ---- FSRS params read-only grid ---- */
.sched-params-display { margin-bottom: 6px; }

.fsrs-params-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 6px;
}

.fsrs-param-cell {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 2px 6px;
  color: var(--text-muted);
  cursor: default;
}
.fsrs-param-cell:hover { border-color: var(--accent); color: var(--text); }

/* ---- Optimal retention result ---- */
.sched-optimal-result {
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.5;
}
.sched-optimal-ok  { background: #dcfce7; border: 1px solid #86efac; color: #166534; }
.sched-optimal-err { background: #fff0f0; border: 1px solid #fca5a5; color: var(--danger); }

/* ================================================================
   A8: Database & Media maintenance page styles
   ================================================================ */

/* ---- Button row ---- */
.maint-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

/* ---- Spinner (reuses .spinner animation from admin.css) ---- */
.maint-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  vertical-align: middle;
  margin-right: 4px;
}

/* ---- Result areas ---- */
.maint-result {
  margin-top: 8px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: 13px;
  line-height: 1.6;
}

.maint-result-ok  { border-color: #86efac; background: #f0fdf4; }
.maint-result-err { border-color: #fca5a5; background: #fff0f0; color: var(--danger); }

/* ---- Status text ---- */
.maint-ok   { color: var(--ok);   font-weight: 600; }
.maint-warn { color: var(--warn); font-weight: 600; }

/* ---- Backup path box ---- */
.maint-backup-box {
  margin-top: 10px;
  padding: 8px 10px;
  background: #fffde7;
  border: 1px solid #e3b341;
  border-radius: var(--radius);
  font-size: 12px;
}

.maint-backup-box code {
  font-family: "SFMono-Regular", Consolas, monospace;
  word-break: break-all;
}

/* ---- Lists ---- */
.maint-list {
  margin: 8px 0 0 16px;
  font-size: 12px;
  line-height: 1.7;
}

.maint-more {
  color: var(--text-muted);
  font-style: italic;
  list-style: none;
  margin-left: -16px;
  padding-left: 16px;
}

/* ---- Collapsible details ---- */
.maint-details {
  margin-top: 8px;
  font-size: 12px;
}

.maint-details summary {
  cursor: pointer;
  color: var(--accent);
  user-select: none;
  padding: 2px 0;
}

.maint-details summary:hover { text-decoration: underline; }

/* ---- Pre-formatted report ---- */
.maint-report {
  margin-top: 8px;
  padding: 8px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 200px;
  overflow-y: auto;
}

/* ---- Dir path ---- */
.maint-dir {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 12px;
}

/* ================================================================
   A9: Diagnostics dashboard styles
   ================================================================ */

/* ---- Page header row ---- */
.diag-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.diag-time-range-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.diag-range-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

.diag-range-select {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--surface);
}
.diag-range-select:focus { outline: none; border-color: var(--accent); }

.diag-refresh-status {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
}

/* ---- Summary strip ---- */
.diag-summary-strip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px 20px;
  margin-bottom: 20px;
}

.diag-summary-loading {
  font-size: 13px;
  color: var(--text-muted);
}

.diag-summary-items {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.diag-summary-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 60px;
}
.diag-summary-item strong { font-size: 18px; font-weight: 600; }
.diag-summary-sub { font-size: 11px; color: var(--text-muted); }

.diag-summary-sep { color: var(--border); font-size: 20px; line-height: 1; }

/* ---- Responsive chart grid ---- */
.diag-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* Wide cards span both columns */
.diag-card-wide {
  grid-column: 1 / -1;
}

@media (max-width: 768px) {
  .diag-grid { grid-template-columns: 1fr; }
  .diag-card-wide { grid-column: unset; }
}

/* ---- Chart cards ---- */
.diag-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
}

.diag-card-header {
  margin-bottom: 14px;
}
.diag-card-title {
  margin-bottom: 2px;
}
.diag-card-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ---- Canvas sizes ---- */
.diag-chart-wrap {
  position: relative;
  flex: 1;
}

.diag-chart-doughnut { height: 220px; }
.diag-chart-bar       { height: 200px; }
.diag-chart-bar-wide  { height: 200px; }

/* ---- Empty / error states ---- */
.diag-empty,
.diag-error {
  padding: 20px;
  text-align: center;
  font-size: 13px;
  border-radius: var(--radius);
  margin-top: 8px;
}

.diag-empty {
  color: var(--text-muted);
  background: var(--bg);
  border: 1px dashed var(--border);
}

.diag-error {
  color: var(--danger);
  background: #fff0f0;
  border: 1px solid #fca5a5;
}

/* ---- Retention table ---- */
.diag-retention-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin-top: 12px;
}
.diag-retention-table th,
.diag-retention-table td {
  padding: 5px 8px;
  border-bottom: 1px solid var(--border);
  text-align: right;
}
.diag-retention-table th { font-weight: 600; color: var(--text-muted); text-align: left; }
.diag-retention-table td:first-child { text-align: left; }

/* ---- FSRS note ---- */
.diag-fsrs-note {
  margin-top: 10px;
  font-size: 11px;
  color: var(--text-muted);
  background: #fffde7;
  border: 1px solid #e3b341;
  border-radius: var(--radius);
  padding: 8px 10px;
  line-height: 1.5;
}

/* ---- Card counts total label ---- */
.diag-total-label {
  margin-top: 8px;
  font-size: 12px;
  text-align: center;
  color: var(--text-muted);
  font-weight: 500;
}

/* ---- Time summary ---- */
.diag-time-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
  font-size: 13px;
}

.diag-time-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.diag-time-stat strong { font-size: 16px; font-weight: 600; }

/* ---- Legend hints in subtitle ---- */
.diag-legend-reps   { color: var(--accent); font-weight: 600; }
.diag-legend-reviews { color: var(--ok); font-weight: 600; }