/* ==========================================================================
   ToolCardio - Interactive Tool UI & Dual-Layout Content Styles
   Specialized Components for Code Editors, Converters, Sliders & FAQ Schema
   ========================================================================== */

/* Tool Workspace Container */
.tool-page-header {
  padding-block: 2.5rem 1.5rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
}

.tool-page-header-inner {
  max-width: 960px;
}

.tool-badge-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.tool-privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--success);
  background: var(--success-light);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.tool-privacy-pill svg {
  width: 14px;
  height: 14px;
}

.tool-main-title {
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  margin-bottom: 0.75rem;
}

.tool-main-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Tool Interactive Shell (Dual Layout - Top Half) */
.tool-workspace-section {
  padding-block: 2.5rem;
  background: var(--bg-page);
}

.tool-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin-bottom: 3.5rem;
}

/* Tool Top Toolbar */
.tool-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-light);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.toolbar-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.toolbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.toolbar-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.toolbar-btn svg {
  width: 15px;
  height: 15px;
}

/* Split Pane Editor (Input vs Output) */
.split-editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 440px;
}

.editor-pane {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-light);
  position: relative;
}

.editor-pane:last-child {
  border-right: none;
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1.25rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.editor-textarea {
  flex: 1;
  width: 100%;
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-surface);
  resize: vertical;
  min-height: 380px;
  outline: none;
}

.editor-textarea:focus {
  background: var(--bg-subtle);
}

.editor-textarea.output-area {
  background: var(--bg-subtle);
}

/* Status Bar & Alert Banners */
.tool-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.75rem;
}

.status-valid { background: var(--success-light); color: var(--success); }
.status-invalid { background: var(--danger-light); color: var(--danger); }
.status-idle { background: var(--bg-subtle); color: var(--text-muted); }

/* File Drop Zone */
.file-dropzone {
  border: 2px dashed var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  background: var(--bg-subtle);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.file-dropzone:hover, .file-dropzone.drag-active {
  border-color: var(--primary);
  background: var(--primary-light);
}

.file-dropzone svg {
  width: 48px;
  height: 48px;
  color: var(--primary);
}

.file-dropzone-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.file-dropzone-sub {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Controls Grid (Options, Sliders, Checkboxes) */
.tool-controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  padding: 1.25rem;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
}

.control-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.control-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.control-select, .control-input {
  padding: 0.55rem 0.85rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.control-select:focus, .control-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.control-range {
  accent-color: var(--primary);
  cursor: pointer;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  user-select: none;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.checkbox-row input {
  accent-color: var(--primary);
  width: 16px;
  height: 16px;
}

/* ==========================================================================
   Dual Layout - Bottom Half: 500-800+ Words SEO & AdSense Content
   ========================================================================== */
.tool-content-article {
  max-width: 900px;
  margin-inline: auto;
  padding-block: 2rem 4rem;
}

.article-section {
  margin-bottom: 3rem;
}

.article-section h2 {
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  position: relative;
  padding-bottom: 0.5rem;
}

.article-section h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--primary);
  border-radius: var(--radius-full);
}

.article-section h3 {
  font-size: 1.35rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.article-section p {
  font-size: 1.025rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.article-section ul, .article-section ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.article-section li {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.article-section strong {
  color: var(--text-primary);
}

.feature-callout-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-block: 1.75rem;
}

.feature-callout-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.feature-callout-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* SERP Google Preview Specific */
.serp-card {
  background: #ffffff;
  border: 1px solid #dadce0;
  border-radius: 8px;
  padding: 18px 22px;
  font-family: Roboto, Arial, sans-serif;
  max-width: 650px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.serp-url-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.serp-favicon {
  width: 22px;
  height: 22px;
  background: #f1f3f4;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: bold;
  color: #5f6368;
}

.serp-site-name {
  font-size: 14px;
  color: #202124;
  line-height: 1.2;
}

.serp-url {
  font-size: 12px;
  color: #4d5156;
  word-break: break-all;
}

.serp-title {
  font-size: 20px;
  color: #1a0dab;
  line-height: 1.3;
  margin-bottom: 6px;
  text-decoration: none;
  cursor: pointer;
  display: block;
}

.serp-title:hover {
  text-decoration: underline;
}

.serp-desc {
  font-size: 14px;
  color: #4d5156;
  line-height: 1.58;
}

/* CTR & Pixel Progress Bars */
.char-meter-container {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.65rem;
}

.char-meter-bar {
  height: 6px;
  background: var(--bg-inset);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.char-meter-fill {
  height: 100%;
  background: var(--success);
  transition: width 0.2s ease, background 0.2s ease;
}

.char-meter-fill.warning { background: var(--warning); }
.char-meter-fill.danger { background: var(--danger); }

/* Case Converter Grid of Buttons */
.case-buttons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  padding: 1.25rem;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
}

/* Responsive Split Pane */
@media (max-width: 860px) {
  .split-editor-grid {
    grid-template-columns: 1fr;
  }
  .editor-pane {
    border-right: none;
    border-bottom: 1px solid var(--border-light);
  }
}