/* Number Base Converter — tool-specific styles */

/* ── Fields grid ──────────────────────────────────────────────────────────── */
.nbc-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 600px) {
  .nbc-fields-grid {
    grid-template-columns: 1fr;
  }
}

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

.nbc-field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.nbc-field-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  cursor: default;
}

.nbc-field-badge {
  display: inline-block;
  padding: 2px 7px;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

/* Override global .text-input for single-line inputs */
.nbc-input {
  min-height: unset;
  height: 44px;
  padding: 0 14px;
  resize: none;
  font-family: 'Courier New', Courier, monospace;
  font-size: 1rem;
  letter-spacing: 0.04em;
  border-radius: var(--radius-control, 6px);
}

.nbc-error {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-danger);
}

.nbc-grouped {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.82rem;
  color: var(--color-muted);
  word-break: break-all;
  letter-spacing: 0.06em;
  line-height: 1.5;
}

/* ── Actions row ──────────────────────────────────────────────────────────── */
.nbc-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 20px;
}

/* ── Bit controls ─────────────────────────────────────────────────────────── */
.nbc-bit-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.nbc-bit-width-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.nbc-bit-width-btns {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.nbc-bit-hint {
  margin: 0 0 14px;
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* ── Bit grid ─────────────────────────────────────────────────────────────── */
.nbc-bit-grid-wrapper {
  overflow-x: auto;
  padding-bottom: 4px;
}

.nbc-bit-grid {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  min-height: 40px;
}

.nbc-bit-cell {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-surface-strong);
  color: var(--text-primary);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  min-height: unset;
}

.nbc-bit-cell:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.nbc-bit-cell:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.nbc-bit-cell--on {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.nbc-bit-cell--on:hover {
  background: color-mix(in srgb, var(--accent) 85%, #000);
  border-color: color-mix(in srgb, var(--accent) 85%, #000);
}

/* Separators between nibbles and bytes */
.nbc-bit-nibble-sep {
  width: 6px;
  flex-shrink: 0;
}

.nbc-bit-byte-sep {
  width: 2px;
  height: 36px;
  flex-shrink: 0;
  background: var(--color-border);
  border-radius: 1px;
}

/* ── Number info panel ────────────────────────────────────────────────────── */
.nbc-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}

.nbc-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background: var(--color-surface);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.nbc-info-label {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nbc-info-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'Courier New', Courier, monospace;
  word-break: break-all;
}

/* ── Hex reference table ──────────────────────────────────────────────────── */
.nbc-ref-details > summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  gap: 8px;
}

.nbc-ref-details > summary::-webkit-details-marker { display: none; }
.nbc-ref-details > summary::marker { display: none; }

.nbc-ref-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nbc-ref-summary h2 {
  margin: 0;
  font-size: var(--type-panel-title);
}

.nbc-ref-chevron {
  font-size: 0.75rem;
  color: var(--color-muted);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.nbc-ref-details[open] .nbc-ref-chevron {
  transform: rotate(180deg);
}

.nbc-ref-table-wrapper {
  overflow-x: auto;
  margin-top: 16px;
}

.nbc-ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.nbc-ref-table th {
  text-align: left;
  padding: 8px 14px;
  background: var(--color-surface);
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  border-bottom: 2px solid var(--color-border);
}

.nbc-ref-table td {
  padding: 7px 14px;
  border-bottom: 1px solid var(--color-border);
  font-family: 'Courier New', Courier, monospace;
  color: var(--text-primary);
}

.nbc-ref-table tbody tr:last-child td {
  border-bottom: none;
}

.nbc-ref-table tbody tr:hover td {
  background: var(--accent-light);
}

/* ── Responsive tweaks ────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .nbc-bit-cell {
    width: 30px;
    height: 30px;
    font-size: 0.82rem;
  }

  .nbc-bit-byte-sep {
    height: 30px;
  }

  .nbc-info-grid {
    grid-template-columns: 1fr 1fr;
  }
}