/* ---------- "Khoanh ô sai" toggle ---------- */
.circle-toggle::before {
  content: '';
  width: 1rem;
  height: 0.7rem;
  border: 2px solid var(--error);
  border-radius: 50%;
}
.circle-toggle[aria-pressed='true'] {
  border-color: var(--error);
  background: var(--error-wash);
  color: var(--error);
}
.circle-toggle[aria-pressed='true']:hover {
  box-shadow: 0 3px 0 var(--error);
}

/* ---------- red ellipse around cells that break their rule ---------- */
.grid td.circled {
  position: relative;
}
.grid td.circled::after {
  content: '';
  position: absolute;
  inset: 3px 2px;
  border: 2px solid var(--error);
  border-radius: 50%;
  pointer-events: none;
}

/* ---------- "Xác thực dữ liệu" dialog ---------- */
.rule-dialog {
  width: min(24rem, calc(100% - 2rem));
}
.rule-fields {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}
.rule-bounds {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr));
  gap: var(--space-2);
}
.rule-field {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
}
.rule-field[hidden] {
  display: none;
}
.rule-field label {
  font-size: 0.88rem;
  font-weight: 600;
}
.rule-field select,
.rule-field input {
  width: 100%;
  min-width: 0;
  min-height: 2.4rem;
  padding: 0 0.6rem;
  border: 1.5px solid var(--ink-soft);
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}
.rule-field input {
  font-family: var(--font-mono);
  font-size: 0.92rem;
}
.rule-field select:focus-visible,
.rule-field input:focus-visible {
  border-color: var(--ink);
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}
.data-dialog .rule-hint {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}
.data-dialog .rule-error {
  min-height: 1.4em;
  color: var(--error);
  font-size: 0.9rem;
  font-weight: 600;
}

/* ---------- invalid-entry alert (Excel's "Stop" style) ---------- */
.reject-dialog {
  border-color: var(--error);
  box-shadow: 8px 8px 0 var(--error-wash);
}
.reject-dialog h2 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--error);
}
.reject-dialog h2::before {
  content: '×';
  display: grid;
  place-items: center;
  flex: none;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--error);
  color: var(--surface);
  font-family: var(--font-body);
  font-size: 1.3rem;
  line-height: 1;
}

/* ---------- list popup under a cell's ▾; top/left come from DomKit.placeNear ---------- */
.list-dialog {
  position: fixed;
  inset: auto;
  width: min(15rem, calc(100% - 16px));
  margin: 0;
}
.list-dialog .data-dialog-body {
  padding: var(--space-1);
}
.list-dialog h2 {
  margin: var(--space-1) var(--space-1) var(--space-1);
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
}
.list-options {
  display: grid;
  max-height: min(15rem, 45vh);
  overflow: auto;
}
.list-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.25rem;
  padding: 0 var(--space-2);
  border: 0;
  border-radius: 3px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.list-option::before {
  content: '';
  width: 0.9rem;
  flex: none;
  color: var(--green);
  font-weight: 700;
}
.list-option[aria-current='true']::before {
  content: '✓';
}
.list-option[aria-current='true'] {
  font-weight: 600;
}
.list-option:hover,
.list-option:focus {
  background: var(--green-wash);
}
.list-option:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}
.data-dialog .list-empty {
  margin: 0;
  padding: var(--space-1) var(--space-2) var(--space-2);
  color: var(--ink-soft);
  font-style: italic;
}