:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1c1f24;
  --muted: #5b6270;
  --border: #d6dae1;
  --accent: #1f6feb;
  --accent-contrast: #ffffff;
  --error: #c0392b;
  --success: #1e7e34;
  --radius: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1d2025;
    --text: #eceef1;
    --muted: #9aa2b1;
    --border: #33373f;
    --accent: #4c8dff;
    --accent-contrast: #0b0d10;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.page-header h1 {
  margin-bottom: 4px;
}

.page-header p {
  color: var(--muted);
  margin-top: 0;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 16px 20px 20px;
  margin: 0 0 20px;
}

legend {
  padding: 0 8px;
  font-weight: 600;
}

.hint {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.85em;
}

.req {
  color: var(--error);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.field:last-child {
  margin-bottom: 0;
}

input[type="text"],
input[type="date"],
select,
textarea {
  font: inherit;
  padding: 8px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

textarea {
  resize: vertical;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px 16px;
}

.checkbox-grid-groups .group-heading {
  grid-column: 1 / -1;
  font-weight: 600;
  color: var(--muted);
  margin: 12px 0 2px;
}

.checkbox-grid-groups .group-heading:first-child {
  margin-top: 0;
}

.checkbox-grid label,
.radio-row label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 400;
}

.radio-row {
  display: flex;
  gap: 20px;
}

.people-picker {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  margin-top: 8px;
}

#peopleInvolvedFilter {
  margin-top: 4px;
}

.field-error {
  color: var(--error);
  font-size: 0.85em;
  min-height: 1.2em;
  margin: 6px 0 0;
}

.todo-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
}

.todo-row {
  display: flex;
  gap: 8px;
}

.todo-row input[type="text"] {
  flex: 1;
}

.todo-row button {
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  border-radius: var(--radius);
  padding: 0 12px;
  cursor: pointer;
}

.secondary-button {
  font: inherit;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

button[type="submit"] {
  font: inherit;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius);
  border: none;
  background: var(--accent);
  color: var(--accent-contrast);
  cursor: pointer;
}

button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#submit-status {
  color: var(--muted);
}

#result {
  margin-top: 24px;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
}

#result.success {
  border-color: var(--success);
}

#result.error {
  border-color: var(--error);
  color: var(--error);
}

#result a {
  color: var(--accent);
}