:root {
  --card-bg: var(--surface);
  --card-border: var(--border);
  --card-shadow: var(--shadow);
}

.pronounce-panel {
  max-width: 1080px;
  margin: 0 auto;
}

.calc-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

 .field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-weight: 600;
  color: var(--muted);
}

.field-hint {
  font-size: 0.82rem;
  color: var(--muted);
}

.toolbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.io-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.io-pane {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.input-area {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: transparent;
  border: none;
}

#input-text,
#output-text {
  width: 100%;
  border: none !important;
  background: transparent !important;
  padding: 0 !important;
  font-size: 1.4rem;
  line-height: 1.6;
  color: var(--text);
  resize: none;
  overflow: hidden;
  height: auto;
  min-height: 220px;
  outline: none;
  font-family: inherit;
  border-radius: 0;
}

#input-text:focus,
#output-text:focus {
  outline: none !important;
  box-shadow: none !important;
  border: none !important;
}

#input-text::placeholder,
#output-text::placeholder {
  color: var(--muted);
  font-weight: 300;
}

.output-pane textarea {
  min-height: 240px;
  border: none;
  background: transparent;
  padding: 6px 2px 6px 0;
  box-shadow: none;
  line-height: 1.5;
  resize: vertical;
}

.output-pane textarea:read-only {
  cursor: pointer;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0)) transparent;
}

.rules-card {
  border: 1px dashed var(--border);
  border-radius: 16px;
  padding: 16px 18px;
  background: var(--surface-2);
  color: var(--muted);
}

.rules-card h4 {
  margin: 0 0 10px;
  font-size: 1rem;
  color: var(--text);
}

.rules-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

@media (max-width: 720px) {
  .io-grid {
    grid-template-columns: 1fr;
  }
}