.letter-keyboard-disclosure[hidden] { display: none; }
.letter-keyboard-toggle { width: 44px; height: 44px; min-height: 44px; padding: 0; flex-shrink: 0; }
.letter-keyboard-toggle[aria-expanded=true] { background: var(--selection); border-color: var(--accent); }
.letter-keyboard { position: fixed; right: 16px; bottom: 16px; z-index: 10; display: grid; gap: 6px; width: min(480px, calc(100vw - 32px)); max-height: calc(100dvh - 96px); overflow-y: auto; box-sizing: border-box; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.letter-keyboard-header { display: flex; align-items: center; gap: 8px; }
.letter-keyboard-handle { flex: 1; min-width: 0; min-height: 44px; padding: 8px; border: 0; background: transparent; color: var(--ink); font: inherit; font-weight: 600; text-align: left; cursor: move; touch-action: none; }
.letter-keyboard[hidden] { display: none; }
.letter-keyboard-row { display: flex; justify-content: center; gap: 5px; }
.letter-key { flex: 1 1 0; max-width: 44px; min-width: 0; min-height: 44px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); color: var(--ink); font: inherit; font-weight: 600; padding: 4px 0; cursor: pointer; touch-action: manipulation; }
.letter-key:hover, .letter-key:active { background: var(--selection); border-color: var(--accent); }
.letter-key:focus-visible { outline-offset: 1px; }
.letter-key--action { max-width: none; flex: 0 1 140px; font-size: .875rem; }
.letter-key--enter { background: var(--accent); border-color: var(--accent); color: white; }
.letter-key--enter:where(:not(:disabled):not([aria-disabled=true])):is(:hover, :active) { background: var(--accent-hover); color: white; }
@media (max-width: 640px) {
  .letter-keyboard-row { gap: 3px; }
  .letter-key { font-size: .875rem; }
}

@media (max-width: 640px), (hover: none) and (pointer: coarse) {
  .letter-keyboard-disclosure { display: none; }
}