/* NSB Tools - Design System */
/* Electric, modern, cyber. Mobile-first. */

:root {
  --color-bg: #060b14;
  --color-surface: rgba(15, 23, 42, 0.85);
  --color-border: rgba(148, 163, 184, 0.15);
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-accent: #38bdf8;
  --color-accent-hover: #0ea5e9;
  --color-accent-2: #22d3ee;
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-pro: #c084fc;
  --color-banner-bg: #0f172a;
  --color-banner-border: rgba(148, 163, 184, 0.2);
  --gradient-accent: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  --gradient-surface: linear-gradient(180deg, rgba(56, 189, 248, 0.04) 0%, transparent 100%);
  --glow-accent: 0 0 24px rgba(56, 189, 248, 0.2), 0 0 48px rgba(129, 140, 248, 0.12);
  --glow-accent-subtle: 0 0 16px rgba(56, 189, 248, 0.15);
  --glow-pro: 0 0 20px rgba(192, 132, 252, 0.25);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, monospace;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --transition: 0.2s ease;
}

@media (prefers-color-scheme: light) {
  :root {
    --color-bg: #f8fafc;
    --color-surface: rgba(255, 255, 255, 0.95);
    --color-border: rgba(148, 163, 184, 0.3);
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-accent: #0ea5e9;
    --color-accent-hover: #0284c7;
    --color-accent-2: #06b6d4;
    --color-banner-bg: #eff6ff;
    --color-banner-border: #bfdbfe;
    --glow-accent: 0 0 20px rgba(14, 165, 233, 0.15);
    --glow-accent-subtle: 0 0 12px rgba(14, 165, 233, 0.1);
  }
  body {
    background: linear-gradient(180deg, #f1f5f9 0%, #f8fafc 50%, #e2e8f0 100%);
    background-image: radial-gradient(ellipse 100% 60% at 50% -10%, rgba(56, 189, 248, 0.08), transparent 40%);
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  background-image: radial-gradient(ellipse 140% 100% at 50% -30%, rgba(56, 189, 248, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 80% 60% at 85% 40%, rgba(192, 132, 252, 0.06) 0%, transparent 40%),
    linear-gradient(180deg, #0a0f1a 0%, #060b14 40%, #040810 100%);
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Layout */
.layout {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.layout--narrow {
  max-width: 42rem;
}

/* Home layout: hero, sidebar (recent), main */
.home-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.home-layout .hero { order: 1; }
.home-layout .home-sidebar { order: 2; }
.home-layout .home-main { order: 3; }

@media (min-width: 64em) {
  .home-layout {
    grid-template-columns: 1fr 14rem;
    grid-template-areas: "hero hero" "main sidebar";
    gap: var(--space-lg);
  }
  .home-layout .hero {
    grid-area: hero;
    order: unset;
  }
  .home-layout .home-sidebar {
    grid-area: sidebar;
    order: unset;
  }
  .home-layout .home-main {
    grid-area: main;
    order: unset;
  }
}

.section-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.section-header-row .section-title {
  margin: 0;
}

/* Banner */
.banner {
  background: var(--color-banner-bg);
  border-bottom: 1px solid var(--color-banner-border);
  padding: var(--space-sm) var(--space-md);
  text-align: center;
  font-size: 0.875rem;
}

.banner a {
  font-weight: 500;
}

/* Header */
.header {
  background: rgba(6, 11, 20, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

@media (prefers-color-scheme: light) {
  .header {
    background: rgba(255, 255, 255, 0.92);
  }
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}

.header-logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.header-logo:hover {
  text-decoration: none;
}

.header-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
}

.header-nav a {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.header-nav a:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.06);
}

@media (prefers-color-scheme: light) {
  .header-nav a:hover {
    background: rgba(0, 0, 0, 0.05);
  }
}

.header-nav a.active {
  color: var(--color-accent);
  background: rgba(56, 189, 248, 0.15);
}

.header-pro-link {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.header-search {
  flex: 1;
  min-width: 10rem;
}

.header-search input {
  width: 100%;
  max-width: 18rem;
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  background: var(--color-surface);
  color: var(--color-text);
}

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

.header-search input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-color: transparent;
}

/* Footer */
.footer {
  margin-top: var(--space-2xl);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-links a {
  color: var(--color-text-muted);
}

/* Hero */
.hero {
  padding: var(--space-xl) 0 var(--space-lg);
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 80%;
  background: radial-gradient(ellipse 80% 60% at 50% 30%, rgba(56, 189, 248, 0.15) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.hero-inner {
  max-width: 40rem;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
  line-height: 1.2;
}

.hero-title-brand {
  color: var(--color-text);
}

.hero-title-highlight {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-lg);
  line-height: 1.6;
}

.hero-search {
  margin-bottom: var(--space-lg);
}

.hero-search input {
  width: 100%;
  max-width: 24rem;
  padding: var(--space-sm) var(--space-lg);
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.hero-search input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: var(--glow-accent-subtle);
}

.hero-trust {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Chips */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: 9999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

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

.chip[aria-pressed="true"] {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: var(--glow-accent-subtle);
}

.chip:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Grid helpers */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

@media (max-width: 47.99em) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 48em) and (max-width: 63.99em) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 48em) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 64em) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Badge, muted, small */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.2);
  color: var(--color-accent);
}

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

.small {
  font-size: 0.8125rem;
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.card--glow:hover {
  box-shadow: var(--glow-accent-subtle);
}

.card h2, .card h3 {
  margin-top: 0;
  font-size: 1.125rem;
}

/* Section tight */
.section--tight {
  margin-top: var(--space-md);
}

.section--tight h2 {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

/* Tool cards (grid) */
.tool-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 48em) {
  .tool-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 48em) and (max-width: 63.99em) {
  .tool-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 64em) {
  .tool-grid { grid-template-columns: repeat(4, 1fr); }
}

.tool-grid--featured {
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 48em) {
  .tool-grid--featured { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 64em) {
  .tool-grid--featured { grid-template-columns: repeat(4, 1fr); }
}

.tool-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.tool-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.tool-card:hover {
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: var(--glow-accent-subtle);
  text-decoration: none;
}

.tool-card-title {
  font-weight: 600;
  font-size: 0.9375rem;
  margin: 0 0 var(--space-xs);
  color: var(--color-text);
}

.tool-card-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-sm);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: auto;
}

.tool-card-tag {
  font-size: 0.6875rem;
  padding: var(--space-xs) var(--space-sm);
  background: rgba(56, 189, 248, 0.2);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
}

.tool-card-cta {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: var(--space-sm);
}

.tool-card:hover .tool-card-cta {
  color: var(--color-accent-2);
}

/* Category tiles */
.category-tile {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  text-decoration: none;
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.category-tile::before {
  content: "";
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.category-tile:hover {
  border-color: rgba(56, 189, 248, 0.4);
  box-shadow: var(--glow-accent-subtle);
  text-decoration: none;
}

.category-tile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
  padding-left: 1.25rem;
}

.category-tile-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
}

.category-tile-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-md);
  line-height: 1.5;
}

.category-tile-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.category-tile-link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
}

.category-tile:hover .category-tile-link {
  color: var(--color-accent-2);
}

/* Start here tiles */
.start-here-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 48em) {
  .start-here-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.start-tile {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  text-decoration: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.start-tile:hover {
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: var(--glow-accent-subtle);
  text-decoration: none;
}

.start-tile-label {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.start-tile-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.start-tile-cta {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: auto;
}

.start-tile:hover .start-tile-cta {
  color: var(--color-accent-2);
}

/* How it works */
.how-it-works-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

@media (min-width: 48em) {
  .how-it-works-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.how-card {
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.how-card-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

.how-card h3 {
  font-size: 1rem;
  margin: 0 0 var(--space-xs);
  color: var(--color-text);
}

.how-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

.how-it-works-link {
  margin: 0;
}

.how-it-works-link a {
  font-size: 0.875rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background: var(--color-bg);
}

.btn-pro {
  background: var(--gradient-accent);
  color: white;
  border: none;
  box-shadow: var(--glow-accent-subtle);
}

.btn-pro:hover:not(:disabled) {
  opacity: 0.95;
  box-shadow: var(--glow-pro);
}

/* Form */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.form-group textarea {
  min-height: 6rem;
  resize: vertical;
}

/* Output area */
.output-area {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-size: 0.875rem;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 6rem;
}

.output-area:empty::before {
  content: "Your output will appear here.";
  color: var(--color-text-muted);
}

/* Button group */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-md);
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 28rem;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

.modal h2 {
  margin-top: 0;
}

.modal-actions {
  margin-top: var(--space-lg);
  display: flex;
  gap: var(--space-sm);
}

/* Toast */
.toast {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-text);
  color: white;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  z-index: 1100;
  opacity: 0;
  transition: opacity var(--transition);
}

.toast.show {
  opacity: 1;
}

/* Pro features section */
.pro-section {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  opacity: 0.85;
}

.pro-section h3 {
  margin-top: 0;
}

.pro-section p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Section headings */
.section {
  margin-top: var(--space-2xl);
}

.section h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

.section ul {
  padding-left: 1.25rem;
}

/* Breadcrumb */
.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb span {
  margin: 0 var(--space-xs);
}

/* Recently used / saved */
.recent-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.recent-list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.recent-list li:last-child {
  border-bottom: none;
}

.recent-list a {
  font-size: 0.875rem;
}

/* Recent sidebar card (home) */
.recent-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  position: sticky;
  top: 4rem;
}

.recent-card h3 {
  font-size: 0.8125rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* View toggle (All tools / By category) */
.view-toggle {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.view-toggle button {
  padding: var(--space-xs) var(--space-md);
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.view-toggle button:hover {
  color: var(--color-text);
}

.view-toggle button[aria-pressed="true"] {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.view-toggle button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Category section (by-category view) */
.category-section {
  margin-bottom: var(--space-xl);
}

.category-section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

table th,
table td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  text-align: left;
}

table th {
  background: var(--color-bg);
  font-weight: 600;
}

/* Category intro */
.category-intro {
  margin-bottom: var(--space-xl);
}

/* Search no results */
.search-no-results {
  padding: var(--space-xl);
  text-align: center;
  color: var(--color-text-muted);
}

/* AI thinking: spinner and busy state */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer {
  background: linear-gradient(90deg, var(--color-border) 25%, var(--color-surface) 50%, var(--color-border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

.is-busy #nsb-generate,
.is-busy #nsb-regen {
  opacity: 0.7;
  cursor: not-allowed;
}

.nsb-thinking-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.nsb-thinking-status[hidden] {
  display: none;
}

/* SEO Health page */
.seo-pass {
  color: var(--color-success);
  font-weight: 600;
}
.seo-fail {
  color: var(--color-error);
  font-weight: 600;
}
.seo-results {
  list-style: none;
  padding-left: 0;
}
.seo-results li {
  margin-bottom: var(--space-sm);
}
.seo-error {
  color: var(--color-error);
}