.flex-tool {
  display: grid;
  gap: 18px;
}

.flex-preview-wrap {
  padding: 16px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.flex-preview {
  display: flex;
  min-height: 160px;
  padding: 10px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: 8px;
}

.flex-item {
  display: grid;
  place-items: center;
  min-width: 48px;
  min-height: 48px;
  padding: 10px;
  color: #fff;
  background: linear-gradient(180deg, #2563eb, #1d4ed8);
  border-radius: 8px;
  font-weight: 800;
}

.flex-form {
  display: grid;
  gap: 14px;
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: end;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 850;
  text-transform: uppercase;
}

.field select,
.field input[type="number"] {
  padding: 10px 12px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
}

.field input[type="number"] {
  width: 76px;
}

.field input[type="range"] {
  padding: 0;
  min-width: 160px;
}

.field output {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.items-list {
  display: grid;
  gap: 10px;
}

.item-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  padding: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.item-label {
  align-self: center;
  min-width: 64px;
  color: var(--muted);
  font-weight: 800;
  font-size: 0.85rem;
}

.utility-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

#cssOutput {
  width: 100%;
  min-height: 140px;
  padding: 12px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.88rem;
  resize: vertical;
}

.seo-content h3 {
  margin: 0;
  font-size: 1.04rem;
}

.seo-content p {
  margin: 8px 0 0;
  color: var(--muted);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.faq-grid article {
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

@media (max-width: 860px) {
  .field-row,
  .item-row {
    flex-direction: column;
    align-items: stretch;
  }

  .field input[type="number"] {
    width: 100%;
  }

  .faq-grid {
    grid-template-columns: 1fr;
  }

  .utility-row .action-button {
    width: 100%;
  }
}