/* On-screen keyboard (library pop-up only; js/keyboard.js). */
.osk {
  position: fixed;
  left: 50%;
  bottom: 0;
  z-index: 10;
  transform: translateX(-50%);
  width: min(1240px, 100vw);
  padding: 12px 14px 14px;
  background: #2a1c0f;
  border: 2px solid var(--brass, #b08d57);
  border-bottom: 0;
  border-radius: 12px 12px 0 0;
  box-shadow: 0 -8px 30px rgba(0, 0, 0, 0.5);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}
.osk[hidden] { display: none; }
.osk-row { display: flex; gap: 8px; margin-top: 8px; }
.osk-row:first-child { margin-top: 0; }
.osk-key {
  flex: 1 1 0;
  height: 64px;
  padding: 0;
  font: 500 27px 'EB Garamond', Georgia, serif;
  color: #2b1d10;
  background: linear-gradient(#fbf3dd, #e9d9b2);
  border: 1px solid #7a5c32;
  border-radius: 8px;
  box-shadow: 0 3px 0 #6b4f2a;
  cursor: pointer;
}
.osk-key:active { transform: translateY(2px); box-shadow: 0 1px 0 #6b4f2a; background: #e2cc98; }
.osk-key.w2 { flex-grow: 2; }
.osk-key.w6 { flex-grow: 6; }
.osk-back, .osk-shift, .osk-enter, .osk-done { font: 600 18px 'Cinzel', serif; }
.osk-shift.on { background: linear-gradient(#f0d48a, #d8b25a); }
.osk-done { color: #fff; background: linear-gradient(#d0242c, #9c0f17); border-color: #5e080d; box-shadow: 0 3px 0 #5e080d; }

/* The open panel moves up to sit above the keyboard. */
.about-panel.osk-open {
  margin-top: 12px;
  max-height: calc(100vh - var(--osk-h, 360px) - 24px);
}