/* container */

#container {
  margin: 24px auto 92px;
  width: 94%;
  max-width: 620px;
}

#count {
  font-size: 12px;
  text-align: center;
  opacity: 0.7;
  margin-bottom: 12px;
}

/* list */

#list .row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  margin-bottom: 6px;
  border-radius: 6px;
  box-shadow: 0px 4px 10px #0004;
}

#list .row.known {
  opacity: 0.45;
}

#list .row .hanzi {
  flex-shrink: 0;
  min-width: 64px;
  font-size: 28px;
}

#list .row .details {
  flex: 1;
  min-width: 0;
}

#list .row .pinyin {
  font-size: 16px;
  opacity: 0.9;
}

#list .row .english {
  font-size: 12px;
  opacity: 0.8;
}

#list .row {
  cursor: pointer;
}

/* known checkbox: uses currentColor so it reads on light and dark cards */

#list .row .known-checkbox {
  appearance: none;
  -webkit-appearance: none;
  flex-shrink: 0;
  position: relative;
  width: 20px;
  height: 20px;
  margin: 0;
  border: 2px solid currentColor;
  border-radius: 5px;
  background: transparent;
  color: inherit;
  opacity: 0.5;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s;
}

#list .row .known-checkbox:hover {
  opacity: 0.85;
}

#list .row .known-checkbox:checked {
  opacity: 1;
  background: currentColor;
}

#list .row .known-checkbox:checked::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid #0008;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* light cards have black text, so the filled box is dark and needs a light check */
#list .row:is(.tan, .yellow, .white, .light-grey, .light-gray) .known-checkbox:checked::after {
  border-color: #fffc;
}

#list .row .known-checkbox:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

/* modes: hidden fields are revealed by tapping the row */

#list.mode-1 .row:not(.revealed) .pinyin,
#list.mode-1 .row:not(.revealed) .english,
#list.mode-2 .row:not(.revealed) .english,
#list.mode-3 .row:not(.revealed) .hanzi,
#list.mode-3 .row:not(.revealed) .pinyin {
  visibility: hidden;
}