/* FormulaInput Component Styles (4b)
 * One field row: raw text while focused, rendered formula while blurred (sub/sup
 * shift with relative offsets so the line height never changes), then a fixed
 * "MW · value · g/mol" segment in the BaseInput #suffix look. Field states per 1e. */

.mint-formula-input {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mint-formula-input__field {
  display: flex;
  align-items: stretch;
  box-sizing: border-box;
  overflow: hidden;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.mint-formula-input__field--sm { min-height: var(--form-height-sm); }
.mint-formula-input__field--md { min-height: var(--form-height-md); }
.mint-formula-input__field--lg { min-height: var(--form-height-lg); }

.mint-formula-input:not(.mint-formula-input--error):not(.mint-formula-input--disabled) .mint-formula-input__field:hover:not(:focus-within) {
  border-color: var(--_field-border-hover);
}

.mint-formula-input__field:focus-within {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring-soft);
}

.mint-formula-input--error .mint-formula-input__field {
  border-color: var(--mint-error);
}

.mint-formula-input--error .mint-formula-input__field:focus-within {
  box-shadow: var(--focus-ring-soft-error);
}

/* Disabled per 1e: tinted field + muted text, no opacity. */
.mint-formula-input--disabled .mint-formula-input__field {
  background-color: var(--bg-tertiary);
}

.mint-formula-input__entry {
  position: relative;
  display: flex;
  flex: 1;
  min-width: 0;
}

.mint-formula-input__input {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  margin: 0;
  background: transparent;
  color: var(--text-primary);
  border: none;
  outline: none;
  font-family: var(--font-mono);
}

.mint-formula-input__input::placeholder {
  color: var(--text-muted);
}

.mint-formula-input__input:disabled {
  color: var(--text-muted);
  cursor: not-allowed;
}

/* The rendered formula sits over the input; the raw text stays for the caret and selection. */
.mint-formula-input__input--masked {
  color: transparent;
  caret-color: var(--text-primary);
}

.mint-formula-input__rendered {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--text-primary);
  line-height: 1;
  white-space: nowrap;
  pointer-events: none;
}

.mint-formula-input--disabled .mint-formula-input__rendered {
  color: var(--text-muted);
}

.mint-formula-input__field--sm .mint-formula-input__input,
.mint-formula-input__field--sm .mint-formula-input__rendered {
  padding: 0 0.625rem;
  font-size: 0.8125rem;
}

.mint-formula-input__field--md .mint-formula-input__input,
.mint-formula-input__field--md .mint-formula-input__rendered {
  padding: 0 0.75rem;
  font-size: 0.875rem;
}

.mint-formula-input__field--lg .mint-formula-input__input,
.mint-formula-input__field--lg .mint-formula-input__rendered {
  padding: 0 1rem;
  font-size: 1rem;
}

.mint-formula-input__sub,
.mint-formula-input__sup {
  position: relative;
  font-size: 0.72em;
  line-height: 0;
}

.mint-formula-input__sub {
  top: 0.3em;
}

.mint-formula-input__sup {
  top: -0.5em;
}

.mint-formula-input__dot {
  margin: 0 0.125em;
}

/* MW segment: fixed width so typing never shifts the field. */
.mint-formula-input__mw {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 6px;
  padding: 0 0.625rem;
  border-left: 1px solid var(--border-light);
  background-color: var(--bg-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  white-space: nowrap;
}

.mint-formula-input__mw-label {
  color: var(--text-secondary);
  font-size: 0.6875rem;
}

.mint-formula-input__mw-value {
  min-width: 52px;
  color: var(--text-primary);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.mint-formula-input__mw-unit {
  color: var(--text-secondary);
}

.mint-formula-input__error-text {
  padding-left: 0.125rem;
  color: var(--_ink-error);
  font-size: 0.75rem;
}

@media (prefers-reduced-motion: reduce) {
  .mint-formula-input__field {
    transition: none;
  }
}