/* ---------- "Dữ liệu" toolbar ---------- */
.data-tools {
  margin-bottom: var(--space-2);
}
.data-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-2);
}
.data-label {
  padding-right: var(--space-2);
  border-right: 2px solid var(--grid);
  color: var(--green);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.filter-toggle[aria-pressed='true'] {
  background: var(--green);
  border-color: var(--green-deep);
  color: var(--surface);
}
.filter-toggle[aria-pressed='true']:hover {
  background: var(--green-deep);
}
.btn:disabled,
.btn:disabled:hover {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.data-msg {
  flex: 1 1 14rem;
  min-height: 1.4em;
  color: var(--ink-soft);
  font-size: 0.88rem;
}
.data-msg.is-error {
  color: var(--error);
  font-weight: 600;
}

/* ---------- in-cell ▾ buttons (filter header, validation list) and filtered rows ---------- */
.grid td.has-filter,
.grid td.has-list {
  position: relative;
  padding-right: 2rem;
}
.filter-btn,
.list-btn {
  position: absolute;
  top: 50%;
  right: 0.25rem;
  display: grid;
  place-items: center;
  width: 1.45rem;
  height: 1.45rem;
  padding: 0;
  border: 1px solid var(--grid);
  border-radius: 3px;
  background: var(--paper);
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.85rem;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  transition: background var(--duration-fast), border-color var(--duration-fast);
}
.filter-btn:hover,
.list-btn:hover {
  border-color: var(--ink);
  background: var(--head-hl);
  color: var(--ink);
}
.filter-btn.is-active {
  border-color: var(--green-deep);
  background: var(--green);
  color: var(--surface);
}
.filter-btn svg {
  width: 0.75rem;
  height: 0.75rem;
  fill: currentColor;
}
.grid .rowhead.filtered {
  color: var(--focus);
  font-weight: 600;
}

/* ---------- dialogs ---------- */
.data-dialog {
  max-width: min(26rem, calc(100% - 2rem)); /* % of the viewport without scrollbars */
  padding: 0;
  border: 2px solid var(--ink);
  border-radius: 4px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: 8px 8px 0 var(--head-hl);
}
.data-dialog[open] {
  animation: dialog-in var(--duration-fast) var(--ease-out);
}
.data-dialog::backdrop {
  background: rgb(18 35 28 / 0.32);
}
@keyframes dialog-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
}
.data-dialog-body {
  padding: var(--space-3);
}
.data-dialog h2 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.2;
}
.data-dialog p {
  margin: 0 0 var(--space-2);
}
.data-dialog input[type='checkbox'],
.data-dialog input[type='radio'] {
  width: 1.1rem;
  height: 1.1rem;
  flex: none;
  accent-color: var(--green);
}
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
}

.sort-scope {
  display: grid;
  gap: var(--space-1);
  margin: 0 0 var(--space-3);
  padding: 0;
  border: 0;
}
.sort-scope legend {
  margin-bottom: var(--space-1);
  padding: 0;
  font-weight: 600;
}
.sort-scope label,
.filter-option {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 2.1rem;
  cursor: pointer;
}

/* The filter popup sits under its ▾ button; top/left come from DataTools.placeNear. */
.filter-dialog {
  position: fixed;
  inset: auto;
  width: min(18rem, calc(100% - 16px));
  margin: 0;
}
.filter-dialog .data-dialog-body {
  padding: var(--space-2) var(--space-3) var(--space-3);
}
.filter-help {
  color: var(--ink-soft);
  font-size: 0.85rem;
}
.filter-options {
  max-height: min(16rem, 45vh);
  margin-bottom: var(--space-2);
  padding: 0 var(--space-2);
  overflow: auto;
  border: 1px solid var(--grid);
}
.filter-option.filter-all {
  border-bottom: 1px solid var(--grid);
  font-weight: 600;
}

/* ---------- "Trong Excel thật" box ---------- */
.in-excel {
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border: 1.5px dashed var(--green);
  background: var(--surface);
}
.lesson .in-excel h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 var(--space-1);
  color: var(--green-deep);
  font-size: 0.95rem;
}
.in-excel h3::before {
  content: '';
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 2px;
  background: var(--green);
}
.in-excel .prose {
  font-size: 0.92rem;
}
.in-excel .prose p:last-child {
  margin-bottom: 0;
}