.morse-wrap [hidden] {
  display: none !important;
}

.morse-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 16px 16px 24px;
  overflow-y: auto;
}

.morse-mode-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.morse-mode-btn {
  background: var(--card-hi);
  border: none;
  color: var(--sub);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
}

.morse-mode-btn.active {
  background: var(--accent);
  color: #fff;
}

.morse-output {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.morse-big-letter {
  font-size: 64px;
  font-weight: 800;
  line-height: 1;
  min-height: 72px;
  color: var(--text);
}

.morse-big-letter.flash {
  animation: morse-letter-flash var(--duration-normal, 0.3s) var(--ease-bounce, ease);
}

@keyframes morse-letter-flash {
  0% { transform: scale(1.4); color: var(--accent); }
  100% { transform: scale(1); color: var(--text); }
}

.morse-sentence-box {
  width: 100%;
  max-width: 440px;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 14px 16px;
  overflow-x: auto;
  white-space: nowrap;
}

.morse-sentence-text {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.morse-sentence-text.placeholder {
  color: var(--sub);
  font-weight: 400;
  font-size: 14px;
}

.morse-trail {
  min-height: 28px;
  font-size: 20px;
  letter-spacing: 4px;
  display: flex;
  gap: 4px;
}

.morse-trail-sym {
  color: var(--accent);
  font-weight: 800;
}

.morse-key-btn {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: none;
  background: radial-gradient(circle at 35% 30%, var(--card-hi), var(--accent) 75%);
  box-shadow: var(--shadow-xl);
  cursor: pointer;
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.08s ease;
}

.morse-key-btn.pressed {
  transform: scale(0.92);
  box-shadow: var(--shadow-md);
}

.morse-hint {
  font-size: 12.5px;
  color: var(--sub);
  text-align: center;
}

.morse-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.morse-action-btn {
  background: var(--card-hi);
  border: none;
  color: var(--text);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}

.morse-tree-toggle-btn {
  margin-top: auto;
  background: none;
  border: 1px solid var(--hairline);
  color: var(--sub);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}

.morse-tree-toggle-btn.active {
  background: var(--card-hi);
  color: var(--text);
}

.morse-tree-panel {
  width: 100%;
  max-width: 480px;
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.morse-tree-legend {
  font-size: 12px;
  color: var(--sub);
  text-align: center;
}

.morse-tree-svg {
  width: 100%;
  height: auto;
}

.morse-tree-edge {
  stroke: var(--hairline);
  stroke-width: 2;
}

.morse-tree-edge.active {
  stroke: var(--accent);
  stroke-width: 3;
}

.morse-tree-node circle {
  fill: var(--card-hi);
  stroke: var(--hairline);
  stroke-width: 1.5;
}

.morse-tree-node.active circle {
  fill: var(--accent);
  stroke: var(--accent);
}

.morse-tree-node.current circle {
  stroke: var(--text);
  stroke-width: 2.5;
}

.morse-tree-node text {
  fill: var(--text);
  font-size: 11px;
  font-weight: 700;
  text-anchor: middle;
  pointer-events: none;
}

.morse-tree-node.active text {
  fill: #fff;
}

.morse-digit-label {
  font-size: 12px;
  color: var(--sub);
  font-weight: 600;
  align-self: flex-start;
}

.morse-digit-table {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.morse-digit-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--card-hi);
  border-radius: var(--radius-md);
  padding: 6px 4px;
}

.morse-digit-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.morse-digit-code {
  font-size: 11px;
  color: var(--sub);
  letter-spacing: 1px;
}