/* Number Base Converter: layout for the linked fields and the two's complement panel.
   Controls come from tools.css and encoders.css. */

.nb-opts {
  align-items: center;
  margin-bottom: var(--space-2);
}
.nb-spacer {
  flex: 1 1 0;
}

.nb-fields {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.nb-row {
  min-width: 0;
}
.nb-line {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.nb-field {
  flex: 1 1 0;
  min-width: 0;
}
.nb-field input {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.nb-base {
  flex: 0 0 9rem;
  min-width: 0;
}
.nb-err {
  margin: var(--space-2) var(--space-1) 0;
  font-size: var(--text-sm);
  line-height: 1.4;
  color: var(--color-danger);
  overflow-wrap: anywhere;
}

/* Two's complement */
.nb-section {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}
.nb-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.nb-title {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-ink);
}
.nb-head .enc-ctl .segmented {
  min-width: 0;
}
.nb-trow {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr) 2rem;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}
.nb-trow:last-child {
  border-bottom: 0;
}
.nb-k {
  font-size: var(--text-sm);
  color: var(--color-muted);
}
.nb-v {
  min-width: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
  overflow-wrap: anywhere;
  user-select: all;
}
.nb-v.is-empty {
  color: var(--color-muted);
  user-select: none;
}

@media (max-width: 640px) {
  .nb-trow {
    grid-template-columns: minmax(0, 1fr) 2rem;
    row-gap: 0;
  }
  .nb-trow .nb-k {
    grid-column: 1 / -1;
  }
  .nb-spacer {
    display: none;
  }
  .nb-base {
    flex-basis: 7rem;
  }
}