:root {
  color-scheme: light dark;
  --text: #111827;
  --muted: #6b7280;
  --bg: #ffffff;
  --surface: #f8fafc;
  --border: #e5e7eb;
  --link: #1d4ed8;
  --btn-bg: #111827;
  --btn-text: #ffffff;
  --error: #b91c1c;
  --saving: #9ca3af;
  --saved: #059669;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #e5e7eb;
    --bg: #111827;
    --surface: #1f2937;
    --border: #374151;
    --link: #60a5fa;
    --btn-bg: #e5e7eb;
    --btn-text: #111827;
    --error: #fca5a5;
    --saved: #34d399;
  }
}

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

#app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
}

h1 { font-size: 1.25rem; margin: 0 0 1rem 0; }
h2 { font-size: 1.05rem; margin: 1rem 0 0.5rem 0; }

.breadcrumb {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.breadcrumb a {
  color: var(--link);
  cursor: pointer;
  text-decoration: underline;
}

.app-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.app-list li {
  padding: 0.75rem;
  border: 1px solid var(--border);
  margin-bottom: 0.5rem;
  background: var(--surface);
  border-radius: 4px;
  cursor: pointer;
}
.app-list li:hover { background: var(--border); }
.app-list .app-name { font-weight: 600; }
.app-list .app-desc { color: var(--muted); font-size: 0.85rem; margin-top: 0.25rem; }

.table-block {
  margin-bottom: 2rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.table-block summary {
  padding: 0.5rem 0.75rem;
  background: var(--surface);
  cursor: pointer;
  font-weight: 600;
}
.table-block .table-body { padding: 0.5rem; overflow-x: auto; }

table.data-grid {
  border-collapse: collapse;
  font-size: 0.85rem;
  width: 100%;
}
table.data-grid th, table.data-grid td {
  border: 1px solid var(--border);
  padding: 0.25rem 0.5rem;
  text-align: left;
  vertical-align: top;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
table.data-grid th {
  background: var(--surface);
  font-weight: 600;
  position: sticky;
  top: 0;
}
table.data-grid td.editable { cursor: text; }
table.data-grid td.null-cell { color: var(--muted); font-style: italic; }
table.data-grid td.saving { background: rgba(200,200,200,0.1); }
table.data-grid td.saved { background: rgba(16,185,129,0.15); }
table.data-grid td.error { background: rgba(239,68,68,0.15); color: var(--error); }
table.data-grid td.action { width: 1%; text-align: center; }

table.data-grid input, table.data-grid textarea {
  width: 100%;
  font: inherit;
  padding: 2px;
  border: 1px solid var(--link);
  background: var(--bg);
  color: var(--text);
  box-sizing: border-box;
}

.toolbar {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  padding: 0.5rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}
.toolbar .spacer { flex: 1; }

button {
  background: var(--btn-bg);
  color: var(--btn-text);
  border: none;
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  font-size: 0.85rem;
  cursor: pointer;
}
button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
button.danger { background: transparent; color: var(--error); padding: 0 4px; }
button:disabled { opacity: 0.5; cursor: default; }

.error-banner {
  background: rgba(239,68,68,0.15);
  color: var(--error);
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.empty {
  color: var(--muted);
  font-style: italic;
  padding: 1rem 0;
}

.cell-error {
  display: block;
  color: var(--error);
  font-size: 0.75rem;
  margin-top: 2px;
}