/* Nettools.im - Clean & Professional Stylesheet */

/* CSS Variables for theming */
:root {
  /* Light mode (default) */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #1a1a2e;
  --text-secondary: #495057;
  --text-muted: #6c757d;
  --border-color: #dee2e6;
  --accent-color: #0066cc;
  --accent-hover: #0052a3;
  --success-color: #198754;
  --error-color: #dc3545;
  --sidebar-width: 260px;
  --font-mono: 'IBM Plex Mono', 'SF Mono', 'Monaco', 'Consolas', monospace;
  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --transition-speed: 0.2s;
}

/* Dark mode */
[data-theme="dark"] {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #b1bac4;
  --text-muted: #8b949e;
  --border-color: #30363d;
  --accent-color: #58a6ff;
  --accent-hover: #79b8ff;
  --success-color: #3fb950;
  --error-color: #f85149;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* Layout */
.site-wrapper {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.logo {
  margin-bottom: 0.5rem;
}

.logo a {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo a:hover {
  color: var(--accent-color);
}

.logo-icon {
  width: 28px;
  height: 28px;
  stroke: var(--accent-color);
}

.tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.5;
}

/* Navigation */
.nav-section {
  margin-bottom: 2rem;
}

.nav-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.nav-list {
  list-style: none;
}

.nav-list li {
  margin-bottom: 0.25rem;
}

.nav-list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  border-radius: 6px;
  transition: all var(--transition-speed);
}

.nav-list a:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-list a.active {
  background-color: var(--accent-color);
  color: #ffffff;
}

.nav-icon {
  width: 18px;
  height: 18px;
  stroke-width: 1.75;
  flex-shrink: 0;
}

/* Theme Toggle */
.sidebar-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.sidebar-footer-actions {
  display: flex;
  gap: 0.5rem;
}

/* Service status dot */
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  display: inline-block;
  background: var(--border-color);
  box-shadow: none;
}

.status-dot--ok {
  background: #2ecc71;
  box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.18), 0 0 12px rgba(46, 204, 113, 0.55);
}

.status-dot--warn {
  background: #f1c40f;
  box-shadow: 0 0 0 3px rgba(241, 196, 15, 0.18), 0 0 12px rgba(241, 196, 15, 0.55);
}

.status-dot--down {
  background: #e74c3c;
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.18), 0 0 12px rgba(231, 76, 60, 0.55);
}

.status-dot--unknown {
  background: #95a5a6;
  box-shadow: 0 0 0 3px rgba(149, 165, 166, 0.14);
}

/* Generic icon-only footer buttons (room for a 3rd button later) */
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-family: inherit;
  cursor: pointer;
  width: 100%;
  transition: all var(--transition-speed);
}

.theme-toggle {
  /* icon-button handles layout; keep class for JS hook */
}

/* Accessibility: visually hidden text (used for icon-only buttons) */
.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;
}

.icon-button:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Custom tooltip for icon-only buttons (faster than native title tooltips) */
.icon-button {
  position: relative;
}

.icon-button::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translateX(-50%) translateY(4px);

  padding: 0.35rem 0.55rem;
  border-radius: 6px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.75rem;
  line-height: 1;
  white-space: nowrap;

  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease, transform 120ms ease;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
  z-index: 10;
}

.icon-button::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(100% + 4px);
  transform: translateX(-50%) translateY(4px);

  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 6px solid var(--border-color);

  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease, transform 120ms ease;
  z-index: 9;
}

/* Small inner triangle to match tooltip background */
.icon-button:hover::before,
.icon-button:focus-visible::before {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.icon-button:hover::after,
.icon-button:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.theme-icon {
  width: 18px;
  height: 18px;
}

/* GitHub Link */
.github-link {
  text-decoration: none;
  color: var(--text-muted);
}

.github-link:hover {
  border-color: var(--accent-color);
}

.github-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 3rem 4rem;
  max-width: 1200px;
}

/* Page Header */
.page-header {
  margin-bottom: 2.5rem;
}

.page-title {
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
}

.page-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
}

/* Tool Cards */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.tool-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-speed);
  display: block;
}

.tool-card:hover {
  border-color: var(--accent-color);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.tool-card-icon {
  width: 40px;
  height: 40px;
  background-color: var(--bg-tertiary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.tool-card-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent-color);
}

.tool-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.tool-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Calculator Styles */
.calculator-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.75rem;
  margin-bottom: 2rem;
  max-width: 100%;
  overflow-x: hidden;
}

.calculator-section h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.input-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: flex-end;
}

.input-group .input-wrapper {
  flex: 1;
  min-width: 200px;
  position: relative;
}

/* Hints in input-groups
   We position hints absolutely so they don't affect button alignment.
   The input-group gets padding-bottom to make space for the hint text. */
.input-group:has(.mac-hint),
.input-group:has(.chmod-hint),
.input-group:has(.input-hint) {
  padding-bottom: 1.8rem;
}

.input-group .mac-hint,
.input-group .chmod-hint,
.input-group .input-hint {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.5rem;
  margin-bottom: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.input-group .input-wrapper + .btn,
.input-group .btn {
  align-self: flex-end;
  margin-bottom: 0;
}

/* Allow an input hint to span the full row (below input + buttons) so wrapped
   buttons don't overlap it, while keeping button alignment consistent. */
.input-group .input-hint--fullrow {
  position: static;
  flex-basis: 100%;
  margin-top: 0.5rem;
  margin-bottom: 0;
}

/* IP lookup: disable the absolute-hint padding when using full-row hint
   (must beat .input-group:has(.input-hint) specificity) */
.input-group.input-group--hint-flow-on-wrap {
  padding-bottom: 0;
}

.input-wrapper {
  flex: 1;
  min-width: 200px;
}

.input-wrapper label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.input-field {
  width: 100%;
  padding: 0.7rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  transition: all var(--transition-speed);
}

.input-field:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.input-field::placeholder {
  color: var(--text-muted);
}

.btn {
  padding: 0.7rem 1.5rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-speed);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #ffffff;
  border: 1px solid var(--accent-color);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--border-color);
}

/* Tab Navigation */
.tab-nav {
  position: relative;
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  -ms-overflow-style: none;
}

.tab-nav::-webkit-scrollbar {
  height: 0;
  display: none;
}

.tab-btn {
  white-space: nowrap;
  flex-shrink: 0;
}

/* Scroll indicator for tabs - gradient fade on mobile */
.calculator-section {
  position: relative;
}

.calculator-section::before {
  content: '';
  position: absolute;
  right: 0;
  top: 1.75rem;
  width: 40px;
  height: 2.5rem;
  display: none;
  background: linear-gradient(to right, transparent, var(--bg-secondary));
  pointer-events: none;
  z-index: 1;
}

.tab-btn {
  padding: 0.75rem 1.25rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-speed);
  margin-bottom: -1px;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
}

/* Results Table */
.results-container {
  margin-top: 2rem;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.results-header h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.results-info {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.results-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.results-table th {
  background-color: var(--bg-tertiary);
  padding: 0.85rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.results-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--text-secondary);
}

.results-table tr:last-child td {
  border-bottom: none;
}

.results-table tr:hover td {
  background-color: var(--bg-secondary);
}

.results-table .cidr {
  font-weight: 600;
  color: var(--accent-color);
}

.results-table .ip-count {
  text-align: right;
}

.results-table tr.highlighted {
  background-color: var(--accent-color);
}

.results-table tr.highlighted td {
  color: #ffffff;
  background-color: var(--accent-color);
}

.results-table tr.highlighted:hover td {
  background-color: var(--accent-hover);
}

.results-table tr.highlighted .cidr {
  color: #ffffff;
}

/* Summary Card */
.summary-card {
  background-color: var(--bg-tertiary);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}

.summary-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  /* Allow long values (e.g. IPv6) to shrink/wrap inside grid cells on mobile */
  min-width: 0;
}

.summary-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.summary-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  /* Avoid wrapping in the middle of words (e.g. "services"). */
  word-break: normal;
  overflow-wrap: break-word;
}

/* Error State */
.error-message {
  background-color: rgba(220, 53, 69, 0.1);
  border: 1px solid var(--error-color);
  border-radius: 6px;
  padding: 1rem;
  color: var(--error-color);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.error-message svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Hidden */
.hidden {
  display: none !important;
}

/* Mobile Responsive */
@media (max-width: 900px) {
  .sidebar {
    position: relative;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
  }
  
  .site-wrapper {
    flex-direction: column;
  }
  
  .main-content {
    margin-left: 0;
    padding: 2rem 1.5rem;
  }
  
  .tagline {
    margin-bottom: 1.5rem;
  }
  
  .nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .nav-list li {
    margin-bottom: 0;
  }
  
  .sidebar-footer {
    display: none;
  }
  
  /* Show scroll indicator on mobile for tabs */
  .calculator-section::before {
    display: block;
  }
  
  .input-group {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .input-group .input-wrapper {
    flex: 1 1 100%;
    min-width: 100%;
  }
  
  .input-group .btn {
    flex: 1 1 calc(50% - 0.375rem);
    min-width: 140px;
  }

  /* On mobile, let hints participate in layout so they don't overlap the buttons */
  .input-group .mac-hint,
  .input-group .chmod-hint,
  .input-group .input-hint {
    position: static;
    margin-top: 0.5rem;
  }

  /* Remove desktop hint padding on mobile */
  .input-group:has(.mac-hint),
  .input-group:has(.chmod-hint),
  .input-group:has(.input-hint) {
    padding-bottom: 0;
  }
  
  .summary-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Print styles */
@media print {
  .sidebar {
    display: none;
  }
  
  .main-content {
    margin-left: 0;
    padding: 1rem;
  }
  
  .calculator-section {
    break-inside: avoid;
  }
}

/* ============================================
   Crontab Helper Styles
   ============================================ */

/* Tab content */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Cron Input Section */
.cron-input-section {
  margin-bottom: 1.5rem;
}

.cron-input-wrapper {
  margin-bottom: 0.5rem;
}

.cron-input-field {
  width: 100%;
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  background-color: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  text-align: center;
  letter-spacing: 0.1em;
  transition: all var(--transition-speed);
}

.cron-input-field:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.cron-input-field::placeholder {
  color: var(--text-muted);
  letter-spacing: 0.2em;
}

.cron-fields-visual {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin-top: 1rem;
}

.cron-field-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.cron-field-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-color);
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  min-width: 60px;
  text-align: center;
}

.cron-field-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-align: center;
}

/* Cron Description */
.cron-description {
  background-color: var(--bg-tertiary);
  border-radius: 8px;
  padding: 1.25rem;
  text-align: center;
}

.description-text {
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* Builder Grid */
.builder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.builder-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.builder-field label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.builder-select,
.select-field {
  padding: 0.6rem 0.85rem;
  font-family: inherit;
  font-size: 0.875rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-speed);
}

.builder-select:focus,
.select-field:focus {
  outline: none;
  border-color: var(--accent-color);
}

.builder-custom {
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-primary);
  transition: all var(--transition-speed);
}

.builder-custom:focus {
  outline: none;
  border-color: var(--accent-color);
}

.builder-custom::placeholder {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Builder Output */
.builder-output {
  background-color: var(--bg-tertiary);
  border-radius: 8px;
  padding: 1.25rem;
}

.builder-output label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.builder-result {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.builder-result code {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-color);
  background-color: var(--bg-primary);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

/* Next Runs List */
.next-runs-list {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.next-run-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-speed);
}

.next-run-item:last-child {
  border-bottom: none;
}

.next-run-item:hover {
  background-color: var(--bg-secondary);
}

.run-number {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-tertiary);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  flex-shrink: 0;
}

.run-datetime {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-primary);
  flex: 1;
}

.run-relative {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.no-runs {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
}

/* Timezone Select */
.timezone-select {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.timezone-select label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.timezone-select .select-field {
  min-width: 150px;
}

/* Field Breakdown */
.field-breakdown {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
}

.breakdown-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
}

.breakdown-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.breakdown-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.breakdown-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-color);
  background-color: var(--bg-primary);
  padding: 0.35rem 0.5rem;
  border-radius: 4px;
}

.breakdown-details {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.breakdown-explanation {
  font-size: 0.8rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.breakdown-range {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* Examples Section */
.examples-section {
  margin-top: 2rem;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.example-btn {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.85rem 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-speed);
}

.example-btn:hover {
  border-color: var(--accent-color);
  background-color: var(--bg-tertiary);
}

.example-btn code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-color);
}

.example-btn span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Reference Section */
.reference-section {
  margin-top: 2rem;
}

.reference-table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.reference-section .results-table td {
  font-family: inherit;
}

.reference-section .results-table code {
  font-family: var(--font-mono);
  background-color: var(--bg-tertiary);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.825rem;
}

/* Syntax Grid */
.syntax-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.syntax-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
}

.syntax-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.syntax-table {
  width: 100%;
}

.syntax-table tr {
  border-bottom: 1px solid var(--border-color);
}

.syntax-table tr:last-child {
  border-bottom: none;
}

.syntax-table td {
  padding: 0.5rem 0;
  font-size: 0.85rem;
}

.syntax-table td:first-child {
  color: var(--text-muted);
  width: 45%;
}

.syntax-table td:last-child {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.syntax-table code {
  font-family: var(--font-mono);
  background-color: var(--bg-tertiary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.825rem;
  color: var(--accent-color);
}

/* Screen reader only */
.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;
}

/* Responsive for Crontab Helper */
@media (max-width: 900px) {
  .cron-input-field {
    font-size: 1.1rem;
    padding: 0.85rem 1rem;
  }
  
  .cron-fields-visual {
    grid-template-columns: repeat(5, 1fr);
    gap: 0.25rem;
  }
  
  .cron-field-value {
    font-size: 1rem;
    padding: 0.4rem 0.5rem;
    min-width: auto;
  }
  
  .cron-field-label {
    font-size: 0.6rem;
  }
  
  .field-breakdown {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .field-breakdown .breakdown-item:last-child {
    grid-column: span 2;
  }
  
  .builder-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .builder-result {
    flex-direction: column;
    align-items: stretch;
  }
  
  .builder-result code {
    text-align: center;
  }
  
  .timezone-select {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .field-breakdown {
    grid-template-columns: 1fr;
  }
  
  .field-breakdown .breakdown-item:last-child {
    grid-column: span 1;
  }
  
  .builder-grid {
    grid-template-columns: 1fr;
  }
  
  .examples-grid {
    grid-template-columns: 1fr;
  }
  
  .syntax-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Chmod Helper Styles
   ============================================ */

/* Input grid: 2 columns on desktop */
.chmod-input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.chmod-input-grid .input-wrapper {
  min-width: 0;
}

.chmod-input-grid .select-field {
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
}

.chmod-hint {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
  word-break: break-word;
}

.chmod-hint code {
  font-family: var(--font-mono);
  background-color: var(--bg-tertiary);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.75rem;
  white-space: nowrap;
}

/* Output row: horizontal on desktop */
.chmod-outputs-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.chmod-output-card {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
}

.chmod-output-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.chmod-output-value code {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-color);
  background-color: var(--bg-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  display: inline-block;
  text-align: center;
}

.chmod-command-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.chmod-command-row code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  flex: 1;
  min-width: 180px;
  overflow-x: auto;
  white-space: nowrap;
}

/* Permissions matrix */
.chmod-matrix {
  display: grid;
  grid-template-columns: 1.2fr repeat(4, 1fr);
  gap: 0.5rem;
}

.chmod-matrix-header {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-align: center;
  padding: 0.35rem 0.25rem;
}

.chmod-matrix-rowlabel {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  padding: 0.6rem 0.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.chmod-check {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color var(--transition-speed), background-color var(--transition-speed);
}

.chmod-check:hover {
  border-color: var(--accent-color);
  background-color: var(--bg-tertiary);
}

.chmod-check input {
  width: 16px;
  height: 16px;
}

.chmod-check span {
  font-size: 0.85rem;
  color: var(--text-primary);
}

.chmod-summary {
  margin-top: 1.25rem;
  background-color: var(--bg-tertiary);
  border-radius: 10px;
  padding: 1.25rem;
  border: 1px solid var(--border-color);
}

/* Chmod responsive */
@media (max-width: 900px) {
  .chmod-input-grid {
    grid-template-columns: 1fr;
  }

  .chmod-outputs-row {
    grid-template-columns: 1fr;
  }

  .chmod-matrix {
    grid-template-columns: 1fr 1fr;
  }

  .chmod-matrix-header {
    display: none;
  }

  .chmod-matrix-rowlabel {
    grid-column: span 2;
    justify-content: center;
  }

  .chmod-command-row code {
    min-width: 0;
    font-size: 0.75rem;
  }
}

@media (max-width: 600px) {
  .chmod-matrix {
    grid-template-columns: 1fr;
  }

  .chmod-matrix-rowlabel {
    grid-column: span 1;
  }

  .chmod-check {
    padding: 0.5rem;
    gap: 0.35rem;
  }

  .chmod-check span {
    font-size: 0.8rem;
  }

  .chmod-output-value code {
    font-size: 1rem;
    padding: 0.4rem 0.5rem;
  }

  .chmod-command-row {
    flex-direction: column;
    align-items: stretch;
  }

  .chmod-command-row code {
    min-width: 0;
    font-size: 0.7rem;
    word-break: break-all;
    white-space: normal;
  }

  .chmod-summary .summary-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Regex Helper Styles
   ============================================ */

.regex-pattern-section {
  margin-bottom: 1.5rem;
}

.regex-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.regex-pattern-wrapper {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background-color: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  transition: border-color var(--transition-speed);
}

.regex-pattern-wrapper:focus-within {
  border-color: var(--accent-color);
}

.regex-delimiter {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-muted);
  user-select: none;
}

.regex-pattern-input {
  flex: 1;
  background: none;
  border: none;
  padding: 0.5rem;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-primary);
  outline: none;
}

.regex-pattern-input::placeholder {
  color: var(--text-muted);
}

.regex-flags-input {
  width: 70px;
  background: none;
  border: none;
  border-left: 1px solid var(--border-color);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-color);
  outline: none;
}

.regex-flags-input::placeholder {
  color: var(--text-muted);
}

.regex-text-section {
  margin-bottom: 1.5rem;
}

.regex-text-area {
  width: 100%;
  min-height: 120px;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  resize: vertical;
  transition: border-color var(--transition-speed);
}

.regex-text-area:focus {
  outline: none;
  border-color: var(--accent-color);
}

.regex-results-section {
  margin-bottom: 1.5rem;
}

.regex-results-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.regex-results-header h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.regex-match-badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-secondary);
}

.regex-match-badge.regex-error-badge {
  background-color: rgba(220, 53, 69, 0.1);
  border-color: var(--error-color);
  color: var(--error-color);
}

.regex-results-list {
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-primary);
}

.regex-match-item {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.regex-match-item:last-child {
  border-bottom: none;
}

.regex-match-header {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.regex-match-number {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-color);
  background-color: var(--bg-tertiary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.regex-match-range {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.regex-match-content {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.5;
  word-break: break-all;
}

.regex-context {
  color: var(--text-muted);
}

.regex-highlight {
  background-color: rgba(0, 102, 204, 0.2);
  color: var(--accent-color);
  padding: 0.1rem 0.2rem;
  border-radius: 3px;
  font-weight: 600;
}

.regex-match-groups {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.regex-group {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
}

.regex-no-matches {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.regex-substitute-section {
  margin-bottom: 1.5rem;
}

.regex-substitute-section .regex-hint {
  font-weight: normal;
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-left: 0.5rem;
}

.regex-substitute-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.regex-substitute-row .input-field {
  flex: 1;
  min-width: 200px;
}

.regex-substitute-result {
  margin-top: 1rem;
  padding: 1rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.regex-result-pre {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  padding: 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  white-space: pre-wrap;
  word-break: break-all;
  margin-top: 0.5rem;
}

/* Explain Tab */
.regex-explain-pattern {
  margin-bottom: 1.5rem;
}

.regex-explain-code {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent-color);
  background-color: var(--bg-tertiary);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.regex-explanation {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.regex-explain-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-primary);
}

.regex-explain-item:last-child {
  border-bottom: none;
}

.regex-explain-item:nth-child(even) {
  background-color: var(--bg-secondary);
}

.regex-explain-token code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-color);
  background-color: var(--bg-tertiary);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.regex-explain-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.regex-no-explain {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
}

.regex-explain-hint {
  margin-top: 1.5rem;
  padding: 1rem;
  background-color: var(--bg-tertiary);
  border-radius: 8px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Reference Tab */
.regex-reference-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.regex-reference-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.25rem;
}

.regex-reference-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.regex-reference-table {
  width: 100%;
}

.regex-reference-table tr {
  border-bottom: 1px solid var(--border-color);
}

.regex-reference-table tr:last-child {
  border-bottom: none;
}

.regex-reference-table td {
  padding: 0.5rem 0;
  font-size: 0.85rem;
}

.regex-reference-table td:first-child {
  width: 35%;
}

.regex-reference-table td:last-child {
  color: var(--text-secondary);
}

.regex-reference-table code {
  font-family: var(--font-mono);
  background-color: var(--bg-tertiary);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--accent-color);
}

/* Examples Tab */
.regex-examples-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.regex-example-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.25rem;
}

.regex-example-item h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.regex-example-pattern {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-color);
  background-color: var(--bg-tertiary);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  margin-bottom: 0.75rem;
  word-break: break-all;
}

.regex-example-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.regex-example-match {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--success-color);
  background-color: rgba(25, 135, 84, 0.1);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  display: inline-block;
}

/* Regex responsive */
@media (max-width: 600px) {
  .regex-pattern-input {
    font-size: 0.95rem;
  }

  .regex-explain-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .regex-substitute-row {
    flex-direction: column;
  }

  .regex-substitute-row .input-field {
    min-width: 100%;
  }
}

/* ============================================
   MAC Vendor Lookup Styles
   ============================================ */

/* Hint text */
.mac-hint {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Generic hint text for other tools */
.input-hint {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Text area for batch input */
.mac-text-section {
  margin-bottom: 1rem;
}

.mac-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.mac-text-area {
  width: 100%;
  min-height: 150px;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  resize: vertical;
  transition: border-color var(--transition-speed);
}

.mac-text-area:focus {
  outline: none;
  border-color: var(--accent-color);
}

/* Loading indicator */
.loading-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* MAC badges */
.mac-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.mac-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 4px;
}

.mac-badge.unicast {
  background-color: rgba(0, 102, 204, 0.1);
  color: var(--accent-color);
  border: 1px solid var(--accent-color);
}

.mac-badge.multicast {
  background-color: rgba(156, 39, 176, 0.1);
  color: #9c27b0;
  border: 1px solid #9c27b0;
}

.mac-badge.broadcast {
  background-color: rgba(255, 152, 0, 0.1);
  color: #ff9800;
  border: 1px solid #ff9800;
}

.mac-badge.local {
  background-color: rgba(255, 193, 7, 0.15);
  color: #f59e0b;
  border: 1px solid #f59e0b;
}

.mac-badge.global {
  background-color: rgba(25, 135, 84, 0.1);
  color: var(--success-color);
  border: 1px solid var(--success-color);
}

.mac-badge.success {
  background-color: rgba(25, 135, 84, 0.1);
  color: var(--success-color);
  border: 1px solid var(--success-color);
}

.mac-badge.warning {
  background-color: rgba(255, 193, 7, 0.15);
  color: #f59e0b;
  border: 1px solid #f59e0b;
}

.mac-badge.error {
  background-color: rgba(220, 53, 69, 0.1);
  color: var(--error-color);
  border: 1px solid var(--error-color);
}

/* MAC details section */
.mac-details-section {
  margin-top: 1.5rem;
}

/* Format conversions */
.mac-formats {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.mac-formats h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.mac-format-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mac-format-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.mac-format-row:last-child {
  border-bottom: none;
}

.mac-format-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  min-width: 120px;
}

.mac-format-value {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-color);
  background-color: var(--bg-tertiary);
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
}

.mac-copy-btn {
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
}

/* Info boxes */
.mac-not-found-info,
.mac-local-info {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.25rem;
}

.mac-not-found-info p,
.mac-local-info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.mac-not-found-info ul,
.mac-local-info ul {
  margin-left: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.mac-not-found-info li,
.mac-local-info li {
  margin-bottom: 0.35rem;
}

/* Database info section */
.db-info-section {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.db-info-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  flex: 1;
}

.db-info-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.db-info-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-color);
}

.db-info-sublabel {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Reference section */
.mac-reference-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

/* MAC structure diagram */
.mac-structure-diagram {
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 1.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

.mac-byte-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.mac-bytes {
  display: flex;
  gap: 0.25rem;
}

.mac-byte {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 6px;
}

.mac-byte.oui {
  background-color: rgba(0, 102, 204, 0.15);
  color: var(--accent-color);
  border: 2px solid var(--accent-color);
}

.mac-byte.nic {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 2px solid var(--border-color);
}

.mac-byte-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

/* Special bits cards */
.mac-special-bits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.mac-bit-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.25rem;
}

.mac-bit-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.mac-bit-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.mac-bit-card code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  background-color: var(--bg-tertiary);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  word-break: break-all;
}

/* MAC formats grid (reference) */
.mac-formats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
}

.mac-format-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.85rem 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.mac-format-item code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-color);
}

.mac-format-item span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Highlight in summary */
.summary-value.highlight {
  color: var(--accent-color);
  font-weight: 600;
}

/* IP lookup: ensure long IPv6 addresses wrap nicely on narrow screens */
#ip-summary .summary-value.highlight {
  white-space: normal;
  overflow-wrap: anywhere;
}

/* MAC Lookup responsive */
@media (max-width: 900px) {
  .mac-structure-diagram {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .mac-format-row {
    flex-wrap: wrap;
  }
  
  .mac-format-label {
    min-width: 100%;
    margin-bottom: 0.25rem;
  }
  
  .db-info-section {
    flex-wrap: wrap;
  }
  
  .db-info-card {
    min-width: calc(50% - 0.5rem);
  }
}

@media (max-width: 600px) {
  .mac-byte {
    width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }
  
  .mac-format-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .mac-format-value {
    width: 100%;
  }
  
  .mac-copy-btn {
    width: 100%;
  }
  
  .db-info-card {
    min-width: 100%;
  }
  
  .mac-formats-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Password Generator
   ============================================ */

.pg-output-field {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.9rem 1rem;
  height: 54px;
}

.pg-output-card {
  margin-bottom: 1rem;
}

.pg-output-row {
  align-items: flex-end;
}

.pg-output-row .btn {
  min-width: 110px;
  justify-content: center;
  height: 54px;
  line-height: 1;
}

.pg-options {
  padding: 1.25rem;
}

.pg-options-summary {
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.pg-options-summary-note {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.pg-options-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.pg-extras {
  grid-column: span 2;
}

.pg-extras-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
  padding: 0.65rem 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

.pg-check {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.95rem;
  color: var(--text-primary);
}

@media (max-width: 900px) {
  .pg-options-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pg-extras {
    grid-column: span 2;
  }
}

@media (max-width: 620px) {
  .pg-options-grid {
    grid-template-columns: 1fr;
  }

  .pg-extras {
    grid-column: auto;
  }

  .pg-output-row .btn {
    width: 100%;
  }
}