.hidden {
  display: none;
}

#win-message {
  text-align: center;
  font-size: 1.5em;
  color: #2a8f2a;
  margin-bottom: 1em;
}

[data-clue-index]::before {
  content: attr(data-clue-index);
  margin-right: 5px;
  position: absolute;
  top: 2px;
  left: 4px;
  font-size: 0.8em;
  color: #9e9e9e;
  z-index: 2;
  pointer-events: none;
}

.crossword-cell {
  position: relative;
}

#buttons button {
  display: block;
  font-size: 1.1em;
  padding: 0.5em 1.5em;
  background: #2a8f2a;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  font-family: monospace;
}

#buttons button:hover {
  background: #217a21;
}

body {
  background: #212121;
  color: #f5f5f5;
  font-family: monospace;
  margin: 0;
  flex-grow: 1;
}

#head {
  background-color: #424242;
  width: 100%;
  display: flex;
  justify-content: space-around;
  margin-bottom: 16px;
}

h1,
#index {
  color: #ffc107;
  text-align: center;
  font-size: 42px;
  flex-grow: 1;
  padding: 16px;
  margin: 0;
}

#index {
  color: #ff5722;
  text-decoration: none;
  flex-grow: 0;
}

#buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 16px;
}

.crossword-grid {
  border-collapse: collapse;
  margin: 0 auto 2em auto;
}

.crossword-cell {
  width: 2.5em;
  height: 2.5em;
  border: 1px solid #bbb;
  text-align: center;
  vertical-align: middle;
  background: #fff;
  position: relative;
  padding: 0;
}

.crossword-input {
  width: 100%;
  height: 100%;
  border: none;
  text-align: center;
  font-size: 1.5em;
  background: transparent;
  outline: none;
  box-sizing: border-box;
  font-family: monospace;
}

.crossword-input:focus {
  background: #e3f0ff;
}

.crossword-block {
  background: #212121;
  color: #212121;
  border: 1px solid #212121;
}

#mid-container {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 32px;
}

#hiragana-keyboard {
  font-size: 20px;
  background: #424242;
  border-radius: 8px;
}

#hiragana-keyboard td {
  cursor: pointer;
  border-radius: 4px;
  text-align: center;
}

#hiragana-keyboard td:hover {
  background: #037ffc;
}

#hiragana-keyboard td.empty {
  background: none;
  cursor: default;
}

#hiragana-keyboard td.dakuten {
  background: rgba(3, 69, 252, 0.3);
}

#hiragana-keyboard td.enabled {
  background: rgba(3, 69, 252, 1);
}

#hiragana-keyboard td.silenced {
  opacity: 0.3;
  pointer-events: none;
}

#clues-container {
  width: min(1100px, 95%);
  margin: 0.5em auto 2em auto;
  background: #424242;
  border-radius: 8px;
  padding: 1em 1.25em;
}

#instructions {
  width: min(1100px, 95%);
  margin: 0.5em auto 2em auto;
  padding: 1em 1.25em;
}

h2 {
  color: #ffc107;
  font-family: monospace;
}

#clues-list {
  list-style: none;
  padding: 0.25em 0 0 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.25rem;
  align-items: flex-start;
}

#clues-list li {
  flex: 0 1 auto;
  width: auto;
  min-width: 60px;
  max-width: 420px;
  margin: 0;
  padding-right: 0.5rem;
  font-size: 1.05rem;
  line-height: 1.35;
  word-break: break-word;
}

#clues-list li:hover,
.clue:hover {
  cursor: pointer;
}

.clue.low-highlight {
  background: #90b9ee;
  border-radius: 4px;
  box-shadow: 0 0 0 2px #8ca0b355;
  color: #3a4a5a;
}

.clue.error-highlight {
  background: #ff7c7c;
  border-radius: 4px;
  box-shadow: 0 0 0 2px #ff333355;
  color: #b30000;
}

.clue.highlight {
  background: #ffe57c;
  border-radius: 4px;
  box-shadow: 0 0 0 2px #ffc53355;
  color: #b36b00;
}

#clues-list li::before {
  content: attr(data-index) " ";
  color: #666;
  margin-right: 0.35rem;
}

.crossword-cell.low-highlight {
  background: #b8c9e1;
  box-shadow: inset 0 0 0 2px #8ca0b355;
}

.crossword-cell.low-highlight .crossword-input {
  background: transparent;
}

.crossword-cell.low-highlight .crossword-input:focus {
  background: rgba(180, 200, 220, 0.35);
}

.crossword-cell.highlight {
  background: #fff1b8;
  box-shadow: inset 0 0 0 2px rgba(255, 197, 51, 0.55);
}

[data-clue-index].highlight::before,
.crossword-cell.highlight[data-clue-index]::before {
  color: #b36b00;
}

.crossword-cell.highlight .crossword-input {
  background: transparent;
}

.crossword-cell.highlight .crossword-input:focus {
  background: rgba(255, 241, 204, 0.6);
}