.layout-single { grid-template-columns: 1fr; max-width: 820px; }

/* ---------- Quan ly danh muc (bang kieu danh sach deck cua Anki) ---------- */
.category-add-row { display: flex; gap: 10px; margin-bottom: 8px; }
.category-add-row input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 15px;
  font-family: inherit;
}

.deck-table { margin-top: 14px; }
.deck-row {
  display: grid;
  grid-template-columns: 1fr 64px 64px 64px 40px;
  align-items: center;
  padding: 7px 10px;
  border-radius: 10px;
  font-size: 15px;
}
.deck-head {
  font-size: 13px;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  margin-bottom: 6px;
}
.deck-head span:not(:first-child) { text-align: right; }
.deck-row:not(.deck-head):hover { background: #efeeea; }

.deck-name { display: flex; align-items: center; gap: 6px; min-width: 0; }
.deck-indent { padding-left: 28px; }
.deck-toggle, .deck-toggle-spacer {
  width: 20px;
  height: 20px;
  flex: none;
  text-align: center;
  line-height: 20px;
}
.deck-toggle {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
}
.deck-toggle:hover { color: var(--ink); }
.deck-link {
  border: none;
  background: transparent;
  padding: 2px 0;
  font: inherit;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.deck-link:hover { text-decoration: underline; }
.deck-uncategorized .deck-link { color: var(--muted); }

.deck-count { text-align: right; font-weight: 600; font-variant-numeric: tabular-nums; }
.count-new { color: #2f6fed; }
.count-learn { color: #d63a3a; }
.count-due { color: #1f9d55; }
.deck-count.zero { color: #b5b5b5; font-weight: 400; }

.deck-gear {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 16px;
  padding: 4px;
  border-radius: 6px;
  cursor: pointer;
  opacity: 0;
}
.deck-row:hover .deck-gear, .deck-gear:focus-visible, .deck-gear[aria-expanded="true"] { opacity: 1; }
@media (hover: none) { .deck-gear { opacity: 1; } }
.deck-gear:hover { background: #e2e0da; color: var(--ink); }

.gear-menu {
  position: fixed;
  z-index: 30;
  min-width: 190px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.14);
  padding: 6px;
  display: flex;
  flex-direction: column;
}
.gear-menu button {
  border: none;
  background: transparent;
  text-align: left;
  font: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
}
.gear-menu button:hover { background: #f0efeb; }
.gear-menu button.danger { color: var(--red-dark); }

/* ---------- Panel gan tu vao danh muc ---------- */
.assign-controls { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.assign-controls select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-family: inherit;
  font-size: 14px;
  max-width: 100%;
}
.cat-word-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  padding: 7px 0;
  border-bottom: 1px solid #f0efeb;
}
.cat-word-row .cat-word-hanzi { font-family: "Noto Sans SC", sans-serif; font-weight: 700; font-size: 18px; min-width: 40px; }
.cat-word-row select {
  margin-left: auto;
  font-size: 13px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-family: inherit;
  max-width: 55%;
}
.cat-empty-hint { color: var(--muted); font-size: 13px; padding: 4px 0; }