.tool-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.tool-header {
  margin-bottom: 2rem;
}

.tool-label {
  margin: 0 0 0.5rem;
  color: var(--main);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.tool-header h1 {
  margin: 0 0 1rem;
  color: var(--text);
}

.tool-header p {
  max-width: 700px;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.tool-panel {
  padding: 2rem;
  background: var(--panel-background);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.json-input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.tool-field {
  min-width: 0;
}

.tool-field label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text);
  font-weight: 700;
}

.tool-field textarea {
  box-sizing: border-box;
  width: 100%;
  min-height: 280px;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface-background);
  color: var(--text-dark);
  font-family: monospace;
  font-size: 0.9rem;
  line-height: 1.5;
  resize: vertical;
}

.tool-field textarea:focus {
  outline: 2px solid var(--main);
  outline-offset: 1px;
}

.tool-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.tool-actions button {
  cursor: pointer;
}

.tool-error {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--error);
  border-radius: 4px;
  background: var(--panel-background);
  color: var(--error);
  font-weight: 700;
}

.diff-results {
  margin-top: 2rem;
}

.diff-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.summary-item {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-background);
  text-align: center;
}

.summary-count {
  display: block;
  color: var(--text-dark);
  font-size: 1.75rem;
  font-weight: 800;
}

.summary-label {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-dark);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.summary-item.added {
  border-color: var(--success);
}

.summary-item.added .summary-count {
  color: var(--success);
}

.summary-item.removed {
  border-color: var(--error);
}

.summary-item.removed .summary-count {
  color: var(--error);
}

.summary-item.changed {
  border-color: var(--main);
}

.summary-item.changed .summary-count {
  color: var(--text-dark);
}

.section-heading {
  margin-bottom: 1rem;
}

.section-label {
  margin: 0 0 0.35rem;
  color: var(--main);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.section-heading h2 {
  margin: 0;
  color: var(--text);
  font-size: 1.25rem;
}

.changes-list {
  display: grid;
  gap: 0.75rem;
}

.change-item {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-background);
}

.change-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel-background);
}

.change-type {
  flex: 0 0 auto;
  padding: 0.2rem 0.45rem;
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.change-type.added {
  background: var(--success);
  color: var(--text-dark);
}

.change-type.removed {
  background: var(--error);
  color: var(--text-dark);
}

.change-type.changed {
  background: var(--main);
  color: var(--text-dark);
}

.change-path {
  min-width: 0;
  color: var(--text);
  font-family: monospace;
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.change-values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.change-value {
  min-width: 0;
  padding: 1rem;
}

.change-value + .change-value {
  border-left: 1px solid var(--border);
}

.change-value-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.change-value pre {
  margin: 0;
  color: var(--text-dark);
  font-family: monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.no-differences {
  padding: 1.25rem;
  border: 1px solid var(--success);
  border-radius: 6px;
  background: var(--surface-background);
  color: var(--text-dark);
  font-weight: 700;
  text-align: center;
}

@media (max-width: 800px) {
  .json-input-grid {
    grid-template-columns: 1fr;
  }

  .diff-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .change-values {
    grid-template-columns: 1fr;
  }

  .change-value + .change-value {
    border-top: 1px solid var(--border);
    border-left: 0;
  }
}

@media (max-width: 600px) {
  .tool-page {
    padding: 2rem 1rem 4rem;
  }

  .tool-panel {
    padding: 1.25rem;
  }

  .tool-actions {
    flex-direction: column;
  }

  .tool-actions button {
    width: 100%;
  }
}