:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #1f1f35;
  --bg-input: #0d0d15;
  --border: #2a2a3e;
  --border-focus: #6c63ff;
  --text-primary: #e8e8f0;
  --text-secondary: #9090a8;
  --text-muted: #606078;
  --accent: #6c63ff;
  --accent-hover: #7b73ff;
  --accent-glow: rgba(108, 99, 255, 0.3);
  --success: #00d68f;
  --warning: #ffaa00;
  --danger: #ff3d71;
  --info: #00b4d8;
  --gradient-1: linear-gradient(135deg, #6c63ff, #e91e63);
  --gradient-2: linear-gradient(135deg, #00d68f, #00b4d8);
  --gradient-3: linear-gradient(135deg, #ff6b35, #ffaa00);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.6);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 280px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 16px; }

.scroll-top-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
}
.scroll-top-btn.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.scroll-top-btn:hover { background: var(--accent-hover); transform: translateY(-2px); }

.search-no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}
.search-no-results .empty-icon { font-size: 3rem; margin-bottom: 12px; }
.search-no-results p { font-size: 1rem; margin-top: 8px; }

.tool-card:focus-visible,
.nav-item:focus-visible,
.tool-btn:focus-visible,
.menu-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.tool-input:focus-visible,
.tool-select:focus-visible,
.tool-textarea:focus-visible,
.search-box:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.app { display: flex; min-height: 100vh; }

/* ===== SIDEBAR ===== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  transition: var(--transition);
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 1.3rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
}

.nav-category {
  margin-bottom: 4px;
}

.nav-category-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition);
}

.nav-category-header:hover { color: var(--text-primary); }

.nav-category-header:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.nav-category-header .cat-icon { font-size: 1rem; }

.nav-category-header .cat-count {
  margin-left: auto;
  background: var(--bg-card);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.65rem;
}

.nav-category-header .arrow {
  transition: var(--transition);
  font-size: 0.6rem;
}

.nav-category.open .arrow { transform: rotate(90deg); }

.nav-category-items { display: none; }

.nav-category.open .nav-category-items { display: block; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px 8px 40px;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.nav-item:hover {
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.05);
}

.nav-item.active {
  color: var(--accent);
  background: rgba(108, 99, 255, 0.1);
  border-left-color: var(--accent);
}

.nav-item .tool-icon { font-size: 0.9rem; width: 20px; text-align: center; }

/* ===== MAIN CONTENT ===== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.top-bar {
  padding: 16px 32px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-secondary);
  position: sticky;
  top: 0;
  z-index: 50;
}

.search-box {
  flex: 1;
  max-width: 500px;
  padding: 10px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

.search-box:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.search-box::placeholder { color: var(--text-muted); }

.tool-count {
  color: var(--text-secondary);
  font-size: 0.85rem;
  white-space: nowrap;
}

.content-area {
  flex: 1;
  padding: 32px;
}

/* ===== HOME GRID ===== */
.home-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  opacity: 0;
  transition: var(--transition);
}

.tool-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.tool-card:hover::before { opacity: 1; }

.tool-card-icon { font-size: 2rem; margin-bottom: 12px; }

.tool-card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.tool-card-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.tool-card-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.65rem;
  font-weight: 600;
  margin-top: 10px;
}

.badge-seo { background: rgba(108, 99, 255, 0.15); color: var(--accent); }
.badge-marketing { background: rgba(233, 30, 99, 0.15); color: #e91e63; }

/* ===== TOOL PAGE ===== */
.tool-page { max-width: 1000px; }

.tool-breadcrumb {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.tool-breadcrumb a {
  color: var(--accent);
  text-decoration: none;
}
.tool-breadcrumb a:hover { text-decoration: underline; }
.tool-breadcrumb span { color: var(--text-secondary); }
.tool-breadcrumb [aria-current="page"] { color: var(--text-primary); }

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

.tool-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.tool-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.tool-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.tool-row {
  margin-bottom: 20px;
}

.tool-row label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.tool-input,
.tool-select,
.tool-textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font);
  outline: none;
  transition: var(--transition);
}

.tool-textarea { min-height: 150px; resize: vertical; font-family: var(--font-mono); font-size: 0.85rem; }

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

.tool-select { cursor: pointer; }
.tool-select option { background: var(--bg-card); }

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.tool-btn:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 4px 16px var(--accent-glow); }

.tool-btn-secondary {
  background: var(--bg-input);
  border: 1px solid var(--border);
}

.tool-btn-secondary:hover {
  background: var(--bg-card);
  box-shadow: none;
}

.tool-btn-success { background: var(--success); }
.tool-btn-success:hover { background: #00e69a; }

.tool-btn-danger { background: var(--danger); }
.tool-btn-danger:hover { background: #ff5a8a; }

.tool-btn-group { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

.tool-result {
  margin-top: 24px;
  padding: 20px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-height: 60px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

.tool-result:empty::before {
  content: 'Result will appear here...';
  color: var(--text-muted);
}

.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.tool-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

.tool-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tool-tab {
  padding: 10px 20px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  margin-bottom: -1px;
}

.tool-tab:hover { color: var(--text-primary); }
.tool-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.tool-score {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 700;
}

.score-good { background: rgba(0, 214, 143, 0.15); color: var(--success); border: 3px solid var(--success); }
.score-medium { background: rgba(255, 170, 0, 0.15); color: var(--warning); border: 3px solid var(--warning); }
.score-bad { background: rgba(255, 61, 113, 0.15); color: var(--danger); border: 3px solid var(--danger); }

.tool-progress {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
  margin: 8px 0;
}

.tool-progress-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease;
}

.progress-good { background: var(--success); }
.progress-medium { background: var(--warning); }
.progress-bad { background: var(--danger); }

.tool-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.tool-table th,
.tool-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.tool-table th {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tool-table tr:hover td { background: rgba(108, 99, 255, 0.05); }

.tool-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
}

.tag-pass { background: rgba(0, 214, 143, 0.15); color: var(--success); }
.tag-fail { background: rgba(255, 61, 113, 0.15); color: var(--danger); }
.tag-warn { background: rgba(255, 170, 0, 0.15); color: var(--warning); }
.tag-info { background: rgba(0, 180, 216, 0.15); color: var(--info); }

.tool-copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 6px 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
}

.tool-copy-btn:hover { background: var(--accent-hover); }

.result-wrapper { position: relative; }

.tool-checkbox-group { display: flex; flex-wrap: wrap; gap: 12px; }

.tool-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.85rem;
}

.tool-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

.tool-range {
  width: 100%;
  height: 6px;
  accent-color: var(--accent);
  cursor: pointer;
}

.tool-range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.tool-color-input {
  width: 50px;
  height: 40px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
}

.tool-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 20px 0;
}

.tool-info-box {
  padding: 14px 18px;
  background: rgba(0, 180, 216, 0.1);
  border-left: 3px solid var(--info);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 12px 0;
}

.tool-warning-box {
  padding: 14px 18px;
  background: rgba(255, 170, 0, 0.1);
  border-left: 3px solid var(--warning);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 12px 0;
}

.tool-success-box {
  padding: 14px 18px;
  background: rgba(0, 214, 143, 0.1);
  border-left: 3px solid var(--success);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 12px 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .menu-toggle { display: block; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-grid-3 { grid-template-columns: 1fr; }
  .home-grid { grid-template-columns: 1fr; }
  .content-area { padding: 20px; }
  .top-bar { padding: 12px 16px; }
}

@media (max-width: 600px) {
  .tool-container { padding: 16px; }
  .tool-header h1 { font-size: 1.3rem; }
}

@media (max-width: 360px) {
  .content-area { padding: 12px; }
  .top-bar { padding: 10px 12px; }
  .search-box { font-size: 0.85rem; padding: 8px 12px; }
  .home-grid { grid-template-columns: 1fr; gap: 12px; }
  .tool-card { padding: 16px; }
  .tool-header h1 { font-size: 1.1rem; }
  .tool-container { padding: 12px; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.fade-in { animation: fadeIn 0.3s ease; }
.fade-in-visible { animation: fadeIn 0.3s ease; }
.slide-in { animation: slideIn 0.3s ease; }

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}

.sidebar-overlay.active { display: block; }

.tool-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 20px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.tool-card[tabindex],
.nav-item[tabindex] { cursor: pointer; }

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  padding: 20px 0;
}

.pagination-info {
  color: var(--text-secondary);
  font-size: 0.9rem;
  white-space: nowrap;
}

.pagination .tool-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.static-page-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.static-page-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 28px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.static-page-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 20px 0 8px;
}

.static-page-content p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 12px;
}

.static-page-content ul, .static-page-content ol {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  margin: 8px 0 16px 24px;
}

.static-page-content li { margin-bottom: 4px; }

.static-page-content a {
  color: var(--accent);
  text-decoration: none;
}

.static-page-content a:hover { text-decoration: underline; }

.static-page-content strong {
  color: var(--text-primary);
}

/* ===== SIDEBAR FOOTER ===== */
.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.sidebar-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 8px;
}

.sidebar-footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.75rem;
  transition: var(--transition);
}

.sidebar-footer-links a:hover {
  color: var(--accent);
}

.sidebar-footer-copy {
  color: var(--text-muted);
  font-size: 0.65rem;
  opacity: 0.6;
}

/* Trust Section */
.trust-section { margin: 40px 0; }
.trust-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-top: 16px; }
.trust-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; text-align: center; transition: var(--transition); }
.trust-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.trust-icon { font-size: 2rem; margin-bottom: 12px; }
.trust-card h3 { font-size: 1rem; margin-bottom: 8px; color: var(--text-primary); }
.trust-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }

/* FAQ Section */
.faq-section { margin: 40px 0; }
.faq-list { margin-top: 16px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 8px; overflow: hidden; }
.faq-item summary { padding: 16px; cursor: pointer; font-weight: 600; color: var(--text-primary); list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: '+'; margin-right: 8px; color: var(--accent); }
.faq-item[open] summary::before { content: '−'; }
.faq-item p { padding: 0 16px 16px; color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .tool-card { transition: none; }
  .fade-in { animation: none; opacity: 1; }
}
@media (prefers-contrast: high) {
  :root { --border: #666; --text-secondary: #ccc; --text-muted: #999; }
  .tool-card { border-width: 2px; }
}
@media (prefers-color-scheme: light) {
  :root { --bg-primary: #f8f9fa; --bg-secondary: #fff; --bg-card: #f1f3f5; --bg-card-hover: #e9ecef; --bg-input: #fff; --border: #dee2e6; --text-primary: #212529; --text-secondary: #495057; --text-muted: #868e96; }
}
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }


/* Deep-content sections on static tool pages */
.tool-page p { margin: 12px 0; color: var(--text-secondary); line-height: 1.7; }
.tool-page h2 { margin-top: 32px; font-size: 1.25rem; }
.tool-page ol, .tool-page ul.deep-list { margin: 12px 0 12px 24px; color: var(--text-secondary); }
.tool-page ul.deep-list li { margin-bottom: 8px; line-height: 1.6; }
.tool-page ul.related-tools { margin: 12px 0 12px 24px; color: var(--text-secondary); }
.tool-page ul.related-tools li { margin-bottom: 8px; }
.tool-page ul.related-tools a { color: var(--accent); text-decoration: none; }
.tool-page ul.related-tools a:hover { text-decoration: underline; }

/* ===== Static tool pages chrome (long-form reading layout) ===== */
.static-page { max-width: 860px; margin: 0 auto; padding: 24px 20px 48px; }
.static-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 4px 18px; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.static-logo { font-size: 1.15rem; font-weight: 800; color: var(--text-primary); text-decoration: none; }
.static-logo:hover { color: var(--accent); }
.static-footer { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: .85rem; text-align: center; }
.static-footer a { color: var(--text-secondary); text-decoration: none; margin: 0 6px; }
.static-footer a:hover { color: var(--accent); }
.tool-breadcrumb { font-size: .85rem; color: var(--text-muted); margin-bottom: 18px; }
.tool-breadcrumb a { color: var(--accent); text-decoration: none; }
.tool-breadcrumb a:hover { text-decoration: underline; }
.tool-breadcrumb > span { margin: 0 4px; }
.static-page-content { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; }

/* Deep-content sections on static tool pages */
.tool-page p { margin: 12px 0; color: var(--text-secondary); line-height: 1.7; }
.tool-page h2 { margin-top: 32px; font-size: 1.25rem; font-weight: 700; color: var(--text-primary); padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.tool-page ol, .tool-page ul.deep-list { margin: 12px 0 12px 24px; color: var(--text-secondary); }
.tool-page ol li, .tool-page ul.deep-list li { margin-bottom: 8px; line-height: 1.6; }
.tool-page ul.related-tools { list-style: none; margin: 12px 0; }
.tool-page ul.related-tools li { margin-bottom: 10px; line-height: 1.55; }
.tool-page ul.related-tools a { color: var(--accent); text-decoration: none; font-weight: 600; }
.tool-page ul.related-tools a:hover { text-decoration: underline; }
.tool-page .static-page-content { margin-top: 8px; }
.tool-header h1 { font-size: 1.9rem; line-height: 1.25; }
.tool-header > p { color: var(--text-secondary); }
.faq-item summary { padding-right: 32px; }
.faq-item p { padding: 0 16px 16px; color: var(--text-secondary); font-size: .9rem; line-height: 1.6; }
.tool-count { color: var(--text-muted); font-size: .85rem; white-space: nowrap; }
.tool-card-badge { display: inline-block; margin-top: 10px; padding: 4px 12px; border-radius: 999px; font-size: .75rem; font-weight: 600; background: rgba(108,99,255,.12); color: var(--accent); border: 1px solid rgba(108,99,255,.3); }
.tool-card-badge.badge-marketing { background: rgba(255,77,125,.1); color: #ff6b93; border-color: rgba(255,77,125,.3); }

/* ===== Critical styles moved from index.html (strict CSP) ===== */
    :root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-card:#1a1a2e;--bg-card-hover:#22223a;--bg-input:#0d0d15;--border:#2a2a3e;--accent:#6c63ff;--accent-hover:#857dff;--accent-glow:rgba(108,99,255,.25);--success:#00d68f;--danger:#ff4d7d;--warning:#ffb340;--text-primary:#e8e8f0;--text-secondary:#9090a8;--text-muted:#606078;--sidebar-width:280px;--radius-sm:8px;--radius-lg:16px;--transition:all .2s ease;--font:'Segoe UI',system-ui,-apple-system,sans-serif}
    *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
    body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden;min-height:100vh}
    .skip-link{position:absolute;top:-100%;left:16px;z-index:9999;padding:12px 24px;background:var(--accent);color:#fff;font-weight:600;border-radius:8px;text-decoration:none}
    .skip-link:focus{top:16px}
    .app{display:flex;min-height:100vh}
    .sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh;z-index:100}
    .main-content{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column;min-height:100vh}
    .top-bar{padding:16px 32px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:16px;background:var(--bg-secondary);position:sticky;top:0;z-index:50}
    .content-area{flex:1;padding:32px}
    @media(max-width:900px){.sidebar{transform:translateX(-100%)}.sidebar.open{transform:translateX(0)}.main-content{margin-left:0}}
  
.nav-sub{font-weight:600;padding-left:24px;color:var(--text-secondary)}
textarea.tool-textarea{min-height:180px}