/* ========== JSON Formatter Tool Page ========== */
.tool-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

.tool-header {
  text-align: center;
  margin-bottom: 24px;
}

.tool-header h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-heading);
  margin-bottom: 8px;
}

.tool-header .tool-desc {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Toolbar */
.tool-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 16px;
  padding: 16px;
  background: var(--color-bg-card);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.tool-btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.tool-btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

.tool-btn-secondary {
  background: #10b981;
  color: #fff;
}

.tool-btn-secondary:hover {
  background: #059669;
}

.tool-btn-outline {
  background: #fff;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.tool-btn-outline:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-primary);
}

.tool-btn-danger {
  background: #ef4444;
  color: #fff;
}

.tool-btn-danger:hover {
  background: #dc2626;
}

.tool-btn-convert {
  background: #8b5cf6;
  color: #fff;
}

.tool-btn-convert:hover {
  background: #7c3aed;
}

/* Indentation selector */
.indent-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.indent-selector label {
  font-size: 14px;
  color: var(--color-muted);
}

.indent-selector select {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 14px;
  background: #fff;
  cursor: pointer;
}

/* Convert toolbar */
.convert-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
  padding: 12px;
  background: #f5f3ff;
  border-radius: 8px;
  border: 1px solid #ddd6fe;
}

.convert-toolbar .convert-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  background: #8b5cf6;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.convert-toolbar .convert-btn:hover {
  background: #7c3aed;
  transform: translateY(-1px);
}

.convert-toolbar .convert-btn.active {
  background: #6d28d9;
  box-shadow: 0 2px 8px rgba(139,92,246,0.4);
}

/* Output mode tabs */
.output-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: #f3f4f6;
  border-radius: 6px;
}

.output-tab {
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  background: transparent;
  color: #6b7280;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.output-tab:hover {
  color: #374151;
}

.output-tab.active {
  background: #fff;
  color: var(--color-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Main editor area */
.tool-editor {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.editor-panel {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.editor-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
}

.editor-panel-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-heading);
}

.editor-panel-header .panel-actions {
  display: flex;
  gap: 8px;
}

.panel-btn {
  padding: 6px 12px;
  font-size: 13px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: #fff;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s;
}

.panel-btn:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-primary);
}

.editor-panel textarea {
  width: 100%;
  height: 400px;
  padding: 16px;
  border: none;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.6;
  resize: none;
  background: #ffffff;
  color: #1f2937;
  caret-color: #1f2937;
}

.editor-panel textarea:focus {
  outline: none;
}

.editor-panel pre {
  height: 400px;
  padding: 16px;
  margin: 0;
  overflow: auto;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.6;
  background: #ffffff;
  color: #1f2937;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Tree view */
.tree-container {
  height: 400px;
  padding: 16px;
  overflow: auto;
  background: #fafafa;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.5;
}

.tree-item {
  margin: 2px 0;
}

.tree-key {
  color: #9333ea;
  font-weight: 600;
}

.tree-string {
  color: #059669;
}

.tree-number {
  color: #dc2626;
}

.tree-boolean {
  color: #2563eb;
  font-weight: 600;
}

.tree-null {
  color: #6b7280;
  font-style: italic;
}

.tree-toggle {
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-right: 4px;
  cursor: pointer;
  color: #6b7280;
  font-size: 12px;
  text-align: center;
  user-select: none;
}

.tree-toggle:hover {
  color: #374151;
}

.tree-collapsed .tree-children {
  display: none;
}

.tree-collapsed .tree-toggle::before {
  content: '▶';
}

.tree-expanded .tree-toggle::before {
  content: '▼';
}

.tree-count {
  color: #6b7280;
  font-size: 12px;
  margin-left: 4px;
}

.tree-bracket {
  color: #6b7280;
}

/* Error display */
.error-box {
  padding: 16px 20px;
  margin: 16px 0;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  color: #dc2626;
}

.error-box .error-icon {
  font-size: 20px;
  margin-right: 8px;
}

.error-box .error-line {
  font-weight: 600;
  color: #b91c1c;
}

/* Success indicator */
.success-box {
  padding: 12px 16px;
  margin: 16px 0;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  color: #16a34a;
  font-weight: 600;
}

/* File upload area */
.file-upload {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  margin-bottom: 16px;
  cursor: pointer;
  transition: all 0.2s;
}

.file-upload:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-active);
}

.file-upload input[type="file"] {
  display: none;
}

.file-upload-icon {
  font-size: 24px;
  color: var(--color-primary);
}

.file-upload-text {
  font-size: 14px;
  color: var(--color-text);
}

.file-upload-text span {
  color: var(--color-primary);
  font-weight: 600;
}

/* Info section */
.tool-info {
  margin-top: 32px;
  padding: 24px;
  background: var(--color-bg-card);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.tool-info h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 16px;
}

.tool-info p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 12px;
}

.tool-info ul {
  margin: 0 0 16px 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
}

.tool-info li {
  margin-bottom: 6px;
}

/* Responsive */
@media (max-width: 900px) {
  .tool-editor {
    grid-template-columns: 1fr;
  }
  
  .editor-panel textarea,
  .editor-panel pre,
  .tree-container {
    height: 300px;
  }
}

@media (max-width: 600px) {
  .tool-container {
    padding: 16px;
  }
  
  .tool-header h1 {
    font-size: 24px;
  }
  
  .tool-toolbar {
    padding: 12px;
    gap: 8px;
  }
  
  .tool-btn {
    padding: 8px 14px;
    font-size: 13px;
  }
  
  .indent-selector {
    width: 100%;
    justify-content: center;
  }
  
  .editor-panel textarea,
  .editor-panel pre,
  .tree-container {
    height: 250px;
  }
}