:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --ink-primary: #1a1d23;
  --ink-secondary: #4b5563;
  --ink-muted: #8a8f98;
  --border: #d8dbe0;
  --grid: #e5e7eb;
  --input-bg: #ffffff;

  --accent: #2b5a8a;
  --accent-light: #dbe5f1;

  --focus-ring: #2b5a8a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1c1f26;
    --ink-primary: #edeef0;
    --ink-secondary: #b7bcc4;
    --ink-muted: #7d838d;
    --border: #343943;
    --grid: #2a2e36;
    --input-bg: #21252c;

    --accent: #5b9bf0;
    --accent-light: #26324a;

    --focus-ring: #5b9bf0;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink-primary);
  padding: 24px 16px 64px;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
}

.app-header h1 {
  margin: 0 0 4px;
  font-size: 1.4rem;
  color: var(--ink-primary);
}

.subtitle {
  margin: 0 0 20px;
  color: var(--ink-secondary);
  font-size: 0.9rem;
}

.toggle-group {
  display: inline-flex;
  gap: 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
  margin-bottom: 12px;
}

.toggle-btn {
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--ink-secondary);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
  font: inherit;
  transition: background 0.15s ease, color 0.15s ease;
}

.toggle-btn.active {
  background: var(--accent);
  color: #fff;
}

.toggle-btn:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.intro {
  color: var(--ink-secondary);
  font-size: 0.9rem;
  max-width: 900px;
  margin-bottom: 20px;
}

.trainee-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 18px;
}

.trainee-fields label {
  display: flex;
  flex-direction: column;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-secondary);
  gap: 4px;
}

.trainee-fields input {
  font-weight: 400;
  font: inherit;
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--ink-primary);
  font-size: 0.95rem;
}

.trainee-fields label.dev-only-field {
  display: none;
}

.trainee-fields label.dev-only-field.visible {
  display: flex;
}

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 12px;
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 1000px;
  font-size: 0.85rem;
}

th, td {
  border-bottom: 1px solid var(--grid);
  border-right: 1px solid var(--grid);
  padding: 7px 10px;
  vertical-align: top;
}

th {
  background: var(--bg);
  text-align: left;
  color: var(--ink-secondary);
  font-weight: 600;
  font-size: 0.78rem;
  position: sticky;
  top: 0;
}

td.no-cell {
  text-align: center;
  font-weight: 600;
  width: 40px;
}

td.dev-cell {
  text-align: center;
  width: 50px;
}

tr.developmental td {
  background: var(--accent-light);
}

input[type="text"], input[type="date"], textarea {
  width: 100%;
  font: inherit;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--ink-primary);
  padding: 5px;
  font-size: 0.85rem;
}

input:focus, textarea:focus, button:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 1px;
}

textarea {
  min-height: 48px;
  resize: vertical;
}

.signature-cell {
  color: var(--ink-muted);
  font-style: italic;
  text-align: center;
  min-width: 90px;
}

.row-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}

.row-controls button {
  font: inherit;
  padding: 7px 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink-primary);
  border-radius: 6px;
  cursor: pointer;
}

.row-count {
  color: var(--ink-muted);
  font-size: 0.85rem;
}

.generate-bar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.privacy {
  margin: 0;
  margin-right: auto;
  color: var(--ink-muted);
  font-size: 0.85rem;
  text-align: left;
  max-width: 500px;
}

button.primary {
  font: inherit;
  padding: 11px 22px;
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
}

button.primary:hover {
  filter: brightness(0.92);
}