/* ============================================================
   main.css — ISP-Branded Stylesheet
   Generated for: Virgin Media Speed Test
   Primary: #e10a0a | Accent: #f59e0b
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;700&display=swap');

/* ── CSS Custom Properties ─────────────────────────────── */
:root, [data-theme="dark"] {
  --primary-color: #e10a0a;
  --accent-color: #f59e0b;
  --dark-bg: #0f0a0a;

  /* Derived tokens */
  --primary-light: color-mix(in srgb, #e10a0a 20%, #fff);
  --primary-dark: color-mix(in srgb, #e10a0a 80%, #000);
  --accent-light: color-mix(in srgb, #f59e0b 20%, #fff);

  /* Neutrals */
  --bg: #090a10;
  --bg-surface: #11131e;
  --bg-card: rgba(22, 25, 40, 0.75);
  --bg-card-hover: rgba(30, 34, 56, 0.9);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  /* Text (WCAG 2.2 AA Contrast > 4.5:1) */
  --text-primary: #f8fafc;
  --text-main: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --color-primary-accessible: #38bdf8;

  /* Glassmorphism & Elevation */
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --backdrop-blur: blur(16px);

  /* Status */
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  /* Layout */
  --max-width: 1280px;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 24px;

  /* Animation */
  --transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s ease;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ── Light Mode Override (Pillar 9) ─────────────────────── */
[data-theme="light"] {
  --bg: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.14);
  --text-primary: #0f172a;
  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05), 0 2px 6px -1px rgba(0, 0, 0, 0.02);
  --backdrop-blur: none;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  max-width: 100vw;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.container, .page-wrapper, .site-header, .site-footer, main, .speed-test-hud {
  max-width: 100vw;
  box-sizing: border-box;
}

/* ── Touch Targets & Mobile Usability Hardening (GSC Compliance) ─ */
button, .btn, .nav-link, .main-nav a, .faq-question, .accordion-header, [role="button"], .pill-nav-btn {
  touch-action: manipulation;
  min-height: 48px;
}

/* ── Accessibility & WCAG 2.2 AA (Pillars & Standards) ───── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--primary-color, #38bdf8);
  color: #050b14 !important;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm, 6px);
  font-weight: 700;
  z-index: 99999;
  transition: top 0.2s ease;
  text-decoration: none;
}
.skip-link:focus {
  top: 1rem;
  outline: 3px solid #ffffff;
}

:focus-visible {
  outline: 2px solid var(--primary-color, #38bdf8);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .gauge-needle, .waveform-canvas, .spin-animation {
    animation: none !important;
    transition: none !important;
  }
}

.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;
}

/* ── Theme Switcher Button ──────────────────────────────── */
.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 1.1rem;
}

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

[data-theme="light"] .theme-icon-sun { display: none; }
[data-theme="light"] .theme-icon-moon { display: inline; }
[data-theme="dark"] .theme-icon-sun { display: inline; }
[data-theme="dark"] .theme-icon-moon { display: none; }
:root:not([data-theme="light"]) .theme-icon-sun { display: inline; }
:root:not([data-theme="light"]) .theme-icon-moon { display: none; }

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

img, svg, canvas { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* ── Container ─────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 { font-size: clamp(1.8rem, 4vw, 3rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.4rem, 3vw, 2.25rem); margin-bottom: 0.75rem; }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); margin-bottom: 0.5rem; }
h4 { font-size: 1.1rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; color: var(--text-secondary); }

/* ── Header & Navigation ────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.875rem;
  padding-bottom: 0.875rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  flex-shrink: 0;
}

.logo-icon { font-size: 1.5rem; }
.logo-brand-symbol {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.logo-brand-symbol svg {
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  display: block;
}
.logo-geo-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--accent-color, #22c55e);
  color: #0f172a;
  padding: 1px 5px;
  border-radius: 4px;
  margin-left: 6px;
  vertical-align: middle;
  line-height: 1.2;
}
.logo-text strong { color: var(--primary-color); }

.main-nav ul {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.main-nav a {
  color: var(--text-secondary);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}

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

/* ── Navigation Dropdown (Seamless & Non-Sticky) ────────── */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
}

.dropdown-caret {
  font-size: 0.75rem;
  transition: transform 0.2s ease;
  display: inline-block;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 6px;
  min-width: 310px;
  max-height: calc(100vh - 85px);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg-surface, #0f172a);
  border: 1px solid var(--border, rgba(255,255,255,0.12));
  border-radius: var(--radius, 12px);
  padding: 0.5rem;
  box-shadow: 0 16px 36px rgba(0,0,0,0.5);
  display: flex;
  flex-direction: column !important;
  gap: 0.15rem !important;
  z-index: 1000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-6px);
  transition: opacity 0.18s cubic-bezier(0.16, 1, 0.3, 1), transform 0.18s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.18s ease;
}

.nav-dropdown-menu::-webkit-scrollbar {
  width: 5px;
}
.nav-dropdown-menu::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 4px;
}

/* Invisible bridge so cursor never drops hover across the 6px gap */
.nav-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}

.nav-dropdown:hover > .nav-dropdown-menu,
.nav-dropdown.is-open > .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-dropdown:hover .dropdown-caret,
.nav-dropdown.is-open .dropdown-caret {
  transform: rotate(180deg);
}

.nav-dropdown-menu li {
  width: 100%;
  list-style: none;
}

.nav-dropdown-menu a {
  display: block;
  padding: 0.6rem 0.85rem;
  font-size: 0.875rem;
  border-radius: var(--radius-sm, 6px);
  color: var(--text-secondary, #94a3b8);
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus {
  background: color-mix(in srgb, var(--primary-color, #3b82f6) 18%, transparent);
  color: var(--text-primary, #ffffff);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.1rem;
}

/* ── Language Switcher (Crawlable Dropdown + Fallback) ─── */
.lang-switcher {
  position: relative;
  display: inline-block;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: border-color var(--transition), background var(--transition);
}

.lang-btn:hover, .lang-btn:focus {
  border-color: var(--accent-color);
  background: var(--bg-card-hover);
}

.lang-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  min-width: 200px;
  max-height: 380px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg-surface, #0f172a);
  border: 1px solid var(--border-strong, rgba(255,255,255,0.16));
  border-radius: var(--radius, 12px);
  padding: 0.4rem;
  box-shadow: 0 16px 36px rgba(0,0,0,0.5);
  display: none;
  flex-direction: column;
  gap: 2px;
  z-index: 1001;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  list-style: none;
}

.lang-switcher:hover .lang-dropdown-menu,
.lang-switcher.open .lang-dropdown-menu,
.lang-switcher:focus-within .lang-dropdown-menu {
  display: flex;
}

.lang-dropdown-menu li {
  list-style: none;
  margin: 0;
  padding: 0;
}

.lang-dropdown-menu a {
  display: block;
  padding: 0.45rem 0.75rem;
  font-size: 0.825rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm, 6px);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.lang-dropdown-menu a:hover, .lang-dropdown-menu a:focus, .lang-dropdown-menu a.active {
  background: color-mix(in srgb, var(--primary-color, #3b82f6) 18%, transparent);
  color: var(--text-primary);
}

.lang-dropdown-menu a.active {
  font-weight: 700;
  color: var(--accent-color);
}

.lang-select-fallback {
  display: none;
}

/* ── Footer International Languages Bar ──────────────────── */
.footer-languages-bar {
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-languages-bar .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

.footer-languages-label {
  font-weight: 600;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-right: 0.25rem;
}

.footer-languages-list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-languages-list li {
  display: inline;
}

.footer-languages-list a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-languages-list a:hover, .footer-languages-list a.active {
  color: var(--accent-color);
  text-decoration: underline;
}

.footer-languages-list a.active {
  font-weight: 700;
}

/* ── Breadcrumb ─────────────────────────────────────────── */
.breadcrumb-nav { padding: 0.75rem 0; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  align-items: center;
}

.breadcrumb-item {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: '/';
  margin-right: 0.25rem;
  color: var(--text-muted);
}

.breadcrumb-item.active { color: var(--text-secondary); }
.breadcrumb-item a { color: var(--accent-color); }

/* ── Disclaimer Banner ──────────────────────────────────── */
.disclaimer-banner {
  background: linear-gradient(135deg, rgba(255,200,50,0.08), rgba(255,150,30,0.05));
  border: 1px solid rgba(255,200,50,0.25);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.disclaimer-banner .disclaimer-icon { font-size: 1.25rem; flex-shrink: 0; margin-top: 0.1rem; }

/* ── Cards ──────────────────────────────────────────────── */
.card {
  contain: layout paint;
}

.card, .step-card, .viability-card, .multicloud-card, .wizard-card, .plan-compliance-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  padding: 1.5rem;
  transition: all var(--transition);
  contain: layout paint;
}

.card:hover, .step-card:hover, .viability-card:hover, .multicloud-card:hover, .wizard-card:hover, .plan-compliance-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px -4px color-mix(in srgb, var(--primary-color) 15%, transparent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  contain: layout paint;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  contain: layout paint;
}

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary-color) 40%, transparent);
}

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

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

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

.btn-lg { padding: 1rem 2rem; font-size: 1.1rem; }

/* ── Tables (Responsive & Zebra Striped) ─────────────────── */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.925rem;
}

thead th {
  background: var(--bg-surface);
  color: var(--text-primary);
  font-weight: 700;
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 2px solid var(--border);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.15s ease;
}

tbody tr:nth-child(even) {
  background: color-mix(in srgb, var(--bg-surface) 40%, transparent);
}

tbody tr:last-child { border-bottom: none; }

tbody tr:hover {
  background: color-mix(in srgb, var(--primary-color) 8%, var(--bg-card));
}

tbody td {
  padding: 1rem 1.25rem;
  color: var(--text-secondary);
  vertical-align: middle;
}

tbody td:first-child { color: var(--text-primary); font-weight: 500; }

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-primary { background: var(--primary-light); color: var(--primary-color); }
.badge-success { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); }

/* ── Formula Block ──────────────────────────────────────── */
.formula-block {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent-color);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent-color);
  margin: 1.5rem 0;
  overflow-x: auto;
}

.formula-label {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

/* ── Calculator Form ────────────────────────────────────── */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 768px) { .calc-grid { grid-template-columns: 1fr; } }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition);
  width: 100%;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color) 20%, transparent);
}

/* ── Result Display ─────────────────────────────────────── */
.result-display {
  background: linear-gradient(135deg, var(--bg-card), var(--bg-surface));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
}

.result-value {
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary-color);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.result-unit {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ── SVG Diagram Container ──────────────────────────────── */
.diagram-container {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.diagram-container svg, .diagram-container canvas {
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* ── Step Cards ─────────────────────────────────────────── */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  counter-reset: step-counter;
}

.step-card {
  display: flex;
  gap: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color var(--transition);
}

.step-card:hover { border-color: var(--primary-color); }

.step-number {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  color: #fff;
}

.step-content h4 { margin-bottom: 0.35rem; }
.step-content p { margin: 0; font-size: 0.9rem; }

/* ── FAQ Section ────────────────────────────────────────── */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.975rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-sans);
  transition: background var(--transition);
}

.faq-question:hover { background: rgba(255,255,255,0.04); }
.faq-question[aria-expanded="true"] { color: var(--primary-color); }
.faq-icon { font-size: 1.2rem; transition: transform var(--transition); flex-shrink: 0; }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }

.faq-answer {
  padding: 0 1.25rem 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: none;
}

.faq-answer.open { display: block; }

/* ── Author Byline ──────────────────────────────────────── */
.author-byline {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.author-avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.author-info { display: flex; flex-direction: column; gap: 0.15rem; }
.author-name { font-weight: 600; color: var(--text-secondary); }
.author-role { font-size: 0.8rem; }

/* ── Data Citation ──────────────────────────────────────── */
.data-citation {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
  padding: 0.5rem 0;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

/* ── Section Spacing ────────────────────────────────────── */
.section { padding: 4rem 0; }
.section-sm { padding: 2.5rem 0; }

.section-header { margin-bottom: 2.5rem; }
.section-header p { font-size: 1.05rem; max-width: 600px; }

/* ── Related Links ──────────────────────────────────────── */
.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.related-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.related-link:hover {
  background: var(--primary-light);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* ── AdSense Containers (Zero-CLS Architecture - Pillar 8) ── */
.ad-container {
  text-align: center;
  padding: 0.5rem 0;
  contain: layout;
}

.ad-container.ad-leaderboard, .ad-slot-leaderboard {
  min-height: 90px;
  width: 100%;
  max-width: 728px;
  margin: 16px auto;
  contain: layout;
}

.ad-container.ad-rectangle, .ad-slot-sidebar {
  min-height: 280px;
  width: 100%;
  max-width: 336px;
  margin: 16px auto;
  contain: layout;
}

.ad-label, .ad-slot-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 4px;
}

.ad-placeholder {
  background: var(--bg-surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  width: 100%;
  height: 100%;
  min-height: inherit;
}

.ad-leaderboard .ad-placeholder, .ad-slot-leaderboard .ad-placeholder { max-width: 728px; min-height: 90px; }
.ad-rectangle .ad-placeholder, .ad-slot-sidebar .ad-placeholder { max-width: 336px; min-height: 280px; }

/* ── Hero Section & 6 Layout Variants (Module 4) ────────── */
.hero {
  padding: 5rem 0 3rem;
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, color-mix(in srgb, var(--primary-color) 12%, transparent), transparent);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.35rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hero h1 { margin-bottom: 1rem; }
.hero p { font-size: 1.15rem; max-width: 600px; margin: 0 auto 2rem; }

/* 1. Centered Hero (Classic) */
.hero--centered-hero {
  text-align: center;
}

/* 2. Split Hero (2-Column) */
.hero--split-hero { text-align: left; }
.hero--split-hero .hero-split-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero--split-hero h1 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
.hero--split-hero .lead { margin-left: 0; }

/* 3. Diagnostic First */
.hero--diagnostic-first { padding: 3.5rem 0 2rem; }
.hero--diagnostic-first h1 { font-size: clamp(1.6rem, 3vw, 2.4rem); }

/* 4. Minimalist Card (Fast.com style) */
.hero--minimalist-card {
  padding: 4rem 0 2.5rem;
}
.hero--minimalist-card .speed-test-hud {
  max-width: 640px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  box-shadow: 0 20px 50px rgba(0,0,0,0.45);
}

/* 5. Compact Console */
.hero--compact-console {
  padding: 3rem 0 2rem;
}
.hero--compact-console .speed-test-hud {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

/* 6. Full Dashboard (NOC Grid) */
.hero--full-dashboard {
  padding: 3rem 0 2rem;
}
.hero--full-dashboard .speed-test-hud {
  background: radial-gradient(circle at top, var(--bg-card), var(--bg));
  border: 1px solid color-mix(in srgb, var(--primary-color) 30%, var(--border));
  box-shadow: 0 0 35px color-mix(in srgb, var(--primary-color) 15%, transparent);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

/* Responsive Breakpoints for Layouts */
@media (max-width: 1199px) and (min-width: 768px) {
  .hero--split-hero .hero-split-container {
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  .hero--split-hero .hero-split-container { grid-template-columns: 1fr; }
  .hero--split-hero { text-align: center; }
  .hero--split-hero .lead { margin: 0 auto 2rem; }
}

/* ── Hero Authority KPI Deck (Module 1) ─────────────────── */
.hero-authority-deck {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2rem auto 1rem;
  max-width: 960px;
}
.authority-kpi-card {
  background: linear-gradient(180deg, var(--bg-card), rgba(15, 23, 42, 0.7));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 1.15rem 1rem;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(8px);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.authority-kpi-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary-color);
}
.authority-kpi-card .kpi-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}
.authority-kpi-card .kpi-value {
  display: block;
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--primary-color);
  line-height: 1.2;
}
.authority-kpi-card .kpi-sub {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}
@media (max-width: 900px) {
  .hero-authority-deck {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 480px) {
  .hero-authority-deck {
    grid-template-columns: 1fr;
  }
}

/* ── Visual Troubleshooting Flow Nodes (Module 2) ───────── */
.troubleshooting-flow-container {
  margin: 1.75rem 0;
}
.flow-nodes-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin: 20px 0;
}
.flow-step-node {
  flex: 1;
  min-width: 220px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 16px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.flow-step-node:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
}
.flow-step-node .node-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}
.node-index {
  display: inline-block;
  font-size: 11px;
  font-weight: 900;
  color: var(--primary-color);
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 8px;
  border-radius: 6px;
}
.node-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}
.node-action {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
}
.flow-arrow-separator {
  color: rgba(255, 255, 255, 0.3);
  font-size: 18px;
  font-weight: bold;
}
@media (max-width: 768px) {
  .flow-arrow-separator {
    display: none;
  }
  .flow-step-node {
    min-width: 100%;
  }
}

/* ── Sticky Quick-Nav Pill Bar on Long Guides (Module 3) ── */
.guide-sticky-pill-nav {
  position: sticky;
  top: 60px;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  padding: 0.6rem 0;
  margin: 1rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
}
.pill-nav-inner {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  white-space: nowrap;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.pill-nav-inner::-webkit-scrollbar {
  display: none;
}
.pill-nav-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 36px;
}
.pill-nav-btn:hover {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}
section, h2, h3 {
  scroll-margin-top: 80px;
}

/* ── High-Density Authority Cards & Badges (Module 4) ───── */
.authority-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-card), rgba(15, 23, 42, 0.6));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(12px);
  margin: 1.5rem 0;
}
.authority-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
}
.badge-status {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.badge-status.verified {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.badge-status.benchmark {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}


/* ── Speed Tier Table ───────────────────────────────────── */
.tier-highlight { color: var(--success); font-weight: 600; }
.tier-speed { font-family: var(--font-mono); }

/* ── DNS Race Bar ───────────────────────────────────────── */
.dns-race { display: flex; flex-direction: column; gap: 0.75rem; }

.dns-race-item { display: flex; flex-direction: column; gap: 0.3rem; }
.dns-race-label { font-size: 0.85rem; color: var(--text-secondary); display: flex; justify-content: space-between; }
.dns-race-bar-bg { background: var(--bg-surface); border-radius: 99px; height: 8px; overflow: hidden; }
.dns-race-bar { height: 100%; border-radius: 99px; background: var(--primary-color); transition: width 1s ease; }

/* ── ISP Card Grid ──────────────────────────────────────── */
.isp-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: all var(--transition);
}

.isp-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.isp-card-name {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.isp-card-meta { font-size: 0.8rem; color: var(--text-muted); }
.isp-card-speed { font-family: var(--font-mono); font-size: 0.9rem; color: var(--success); margin: 0.5rem 0; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .main-nav.open { display: block; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-surface); border-bottom: 1px solid var(--border); padding: 1rem; }
  .main-nav.open ul { flex-direction: column; }
  .mobile-menu-btn { display: flex; }
}

@media (max-width: 640px) {
  .hero { padding: 3rem 0 2rem; }
  .section { padding: 2.5rem 0; }
  .card-grid { grid-template-columns: 1fr; }
}

/* ── Print ──────────────────────────────────────────────── */
@media print {
  .site-header, .site-footer, .ad-container, .mobile-menu-btn { display: none; }
}

/* ── Key Takeaways Box (2026 Semantic SEO) ─────────────── */
.key-takeaways-box {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.08), rgba(59, 130, 246, 0.05));
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0 2rem;
}
.takeaways-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.takeaways-header h3 { font-size: 1.1rem; color: var(--text-primary); margin: 0; }
.takeaways-list { display: flex; flex-direction: column; gap: 0.5rem; padding-left: 0.25rem; }
.takeaways-list li { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.95rem; color: var(--text-secondary); }
.takeaway-bullet { color: var(--success); font-weight: 700; flex-shrink: 0; margin-top: 0.1rem; }

/* ── AI Overview & Direct Answer Box (AIO / Snippets) ────── */
.aio-definition-box {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--primary-color);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0 2rem;
}
.aio-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}
.aio-text { font-size: 1.05rem; line-height: 1.6; color: var(--text-primary); margin: 0; }

/* ── Jump-Linked Table of Contents ───────────────────────── */
.toc-container {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0 2.5rem;
}
.toc-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.toc-header h3 { font-size: 1.05rem; margin: 0; }
.toc-list { display: flex; flex-direction: column; gap: 0.4rem; }
.toc-link { color: var(--text-secondary); font-size: 0.9rem; transition: color var(--transition); }
.toc-link:hover { color: var(--accent-color); }
.toc-num { color: var(--text-muted); margin-right: 0.35rem; font-weight: 600; }

/* ── E-E-A-T Author Card ─────────────────────────────────── */
.author-eeat-card {
  display: flex;
  gap: 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 2rem 0;
  align-items: center;
}
.author-avatar-badge {
  font-size: 2rem;
  width: 54px;
  height: 54px;
  background: var(--bg-card);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.author-details { display: flex; flex-direction: column; gap: 0.3rem; }
.author-header-line { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.author-name { font-weight: 700; color: var(--text-primary); font-size: 1rem; }
.author-badge { font-size: 0.75rem; background: rgba(59, 130, 246, 0.15); color: var(--info); padding: 0.15rem 0.5rem; border-radius: 99px; }
.author-bio-text { font-size: 0.85rem; color: var(--text-secondary); margin: 0; }
.author-meta-time { font-size: 0.75rem; color: var(--text-muted); display: flex; gap: 0.4rem; }

/* ── Citations & Source Box ──────────────────────────────── */
.citations-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 2.5rem 0 1.5rem;
}
.citations-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem; }
.citations-header h4 { font-size: 0.95rem; margin: 0; }
.citations-list { display: flex; flex-direction: column; gap: 0.4rem; }
.citations-list li { font-size: 0.85rem; color: var(--text-secondary); }
.source-link { color: var(--accent-color); font-weight: 500; }
.source-org { color: var(--text-muted); font-size: 0.8rem; }

/* ── Share Bar ───────────────────────────────────────────── */
.share-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.5rem 0;
  padding: 0.75rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.share-label { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.share-btn:hover { background: var(--bg-card-hover); border-color: var(--primary-color); }

/* ── Contextual Bridge Callout (Koray Gübür Silo Linker) ── */
.contextual-bridge-box {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(34, 197, 94, 0.05));
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--accent-color);
  border-radius: var(--radius);
  padding: 1.1rem 1.35rem;
  margin: 1.75rem 0;
}
.bridge-icon { font-size: 1.5rem; flex-shrink: 0; }
.bridge-text { font-size: 0.9rem; color: var(--text-secondary); margin: 0; line-height: 1.5; }
.bridge-link { color: var(--accent-color); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.bridge-link:hover { color: var(--primary-color); }

/* ── Search Trigger & Modal ──────────────────────────────── */
.search-trigger-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  transition: all var(--transition);
}
.search-trigger-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-color);
  color: var(--text-primary);
}
.search-kbd-nav {
  font-size: 0.7rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  color: var(--text-muted);
}
.search-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
}
.search-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
}
.search-dialog {
  position: relative;
  z-index: 10000;
  width: 100%;
  max-width: 600px;
  margin: 0 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.search-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-family: var(--font-sans);
  outline: none;
}
.search-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0;
}
.search-close-btn:hover { color: var(--text-primary); }
.search-results {
  max-height: 380px;
  overflow-y: auto;
  padding: 0.5rem;
}
.search-result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-decoration: none;
  transition: background var(--transition);
}
.search-result-item:hover, .search-result-item.active {
  background: color-mix(in srgb, var(--primary-color) 15%, transparent);
}
.search-item-title { font-weight: 600; font-size: 0.95rem; }
.search-item-desc { font-size: 0.8rem; color: var(--text-muted); }
.search-item-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--accent-color);
  flex-shrink: 0;
}
.search-empty {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.search-footer {
  display: flex;
  gap: 1.5rem;
  padding: 0.6rem 1.25rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
}
.search-footer kbd {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05rem 0.3rem;
}

/* ── Floating Back to Top Button ────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-color);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 999;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  border: none;
  cursor: pointer;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* ── Answer-First Content Card (2026 Semantic AEO) ─────── */
.answer-first-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary-color);
  border-radius: var(--radius-md, 8px);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0 2rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.answer-first-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: color-mix(in srgb, var(--primary-color) 15%, transparent);
  color: var(--primary-color);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  margin-bottom: 0.75rem;
}
.answer-first-text {
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0 0 1rem;
}
.answer-first-metrics {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}
.metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}
.metric-label {
  color: var(--text-muted);
}
.metric-value {
  color: var(--accent-color, var(--primary-color));
  font-weight: 700;
}

/* ── Technically Reviewed By E-E-A-T Trust Badge ───────── */
.editorial-trust-badge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md, 8px);
  padding: 0.875rem 1.25rem;
  margin: 1.25rem 0 1.75rem;
}
.author-avatar-group {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}
.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-color);
  background: var(--bg-surface);
  flex-shrink: 0;
}
.author-meta-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.85rem;
}
.author-name {
  color: var(--text-primary);
}
.author-name a {
  color: var(--text-primary);
  text-decoration: none;
}
.author-name a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}
.review-status {
  color: var(--text-muted);
  font-size: 0.775rem;
}
.review-status strong {
  color: var(--text-secondary);
}
.lab-verification-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--success, #10b981);
  background: color-mix(in srgb, var(--success, #10b981) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--success, #10b981) 30%, transparent);
  padding: 0.3rem 0.65rem;
  border-radius: 99px;
  white-space: nowrap;
}

/* ── Human Editorial Field Engineering Note ─────────────── */
.editor-field-note {
  background: color-mix(in srgb, var(--accent-color) 8%, var(--bg-card));
  border: 1px solid color-mix(in srgb, var(--accent-color) 30%, var(--border));
  border-left: 4px solid var(--accent-color);
  border-radius: var(--radius-md, 8px);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}
.editor-note-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--accent-color);
  margin-bottom: 0.6rem;
}
.editor-icon {
  font-size: 1.1rem;
}
.editor-note-body {
  font-size: 0.925rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}

/* ── Footer Trust & Social Mesh ────────────────────────── */
.footer-trust-banner {
  background: color-mix(in srgb, var(--primary-color) 8%, var(--bg-surface));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  font-size: 0.825rem;
}
.footer-trust-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-entity-notice {
  flex: 1;
  min-width: 280px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.footer-badges-mesh {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.65rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.dmca-badge { color: #38bdf8; border-color: rgba(56, 189, 248, 0.3); }
.fcc-badge { color: #4ade80; border-color: rgba(74, 222, 128, 0.3); }

.footer-col-brand h3 { margin-bottom: 0.5rem; }
.footer-tagline { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.75rem; }
.footer-address-block {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.footer-address-block a { color: var(--text-secondary); }
.footer-social-mesh {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.social-icon-link {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.social-icon-link:hover {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ── INP + LCP Optimization: Skip rendering off-screen sections ──── */
.section-calculators,
.section-guides,
.section-blog,
.section-faq,
.section-regional-hubs,
.section-community-leaderboard,
.section-legal-links,
.outage-pulse,
.user-reviews,
.regional-leaderboard-card {
  content-visibility: auto;
  contain-intrinsic-size: 0 600px;
}

/* ── Breadcrumb Trail ──────────────────────────────── */
.breadcrumb-trail { padding: 12px 0 20px; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb__item { display: inline-flex; align-items: center; }
.breadcrumb__link {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition);
}
.breadcrumb__link:hover { color: var(--accent-color); text-decoration: underline; }
.breadcrumb__separator { color: var(--text-muted); user-select: none; margin: 0 4px; }
.breadcrumb__item--current { color: var(--text-main); font-weight: 500; }

@media (max-width: 480px) {
  .breadcrumb__list { font-size: 12px; }
}

/* ── Trademark & Anti-Impersonation Disclaimer Banner ──── */
.site-disclaimer-banner {
  background: rgba(0, 0, 0, 0.45);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 6px 12px;
  font-size: 11px;
  line-height: 1.45;
  color: var(--text-muted);
  text-align: center;
}
.site-disclaimer-banner p {
  margin: 0 auto;
  max-width: 1100px;
}
.site-disclaimer-banner.footer-disclaimer {
  border-bottom: none;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 20px;
  padding: 10px 12px;
}

/* ── AdSense Containers — Zero CLS Architecture ──── */
.ad-slot-placeholder { display: none !important; }
.ad-slot, .ad-container {
  width: 100%;
  margin: 24px auto;
  overflow: hidden;
  contain: layout style;
  background: rgba(255,255,255,0.02);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.05);
}
.ad-slot--leaderboard, .ad-leaderboard { max-width: 728px; min-height: 90px; }
.ad-slot--result-card, .ad-rectangle { max-width: 336px; min-height: 280px; }
.ad-slot--in-content  { max-width: 728px; min-height: 250px; }
.ad-slot__label, .ad-label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  text-align: center;
  padding: 6px 0 2px;
  margin: 0;
}
@media (max-width: 728px) {
  .ad-slot--leaderboard, .ad-leaderboard { max-width: 320px; min-height: 50px; }
}

/* ── Floating Back-to-Top Action Button (Module 4) ──── */
.backtop-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-color, var(--primary, #6366f1));
  color: #ffffff;
  border: none;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 99;
  display: flex;
  align-items: center;
  justify-content: center;
}
.backtop-btn:hover {
  filter: brightness(1.15);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.4);
}
.backtop-btn.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ── Advanced Telemetry & Diagnostic Features ────────── */
.stream-mode-toggle {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.05);
  padding: 3px;
  border-radius: 99px;
  border: 1px solid var(--border);
  margin-bottom: 1rem;
}
.stream-btn {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 99px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}
.stream-btn.active {
  background: var(--primary-color, #6366f1);
  color: #ffffff;
}

.readiness-scorecard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 1.5rem;
}
.readiness-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.readiness-card.green .readiness-badge { color: #22c55e; background: rgba(34, 197, 94, 0.15); border: 1px solid rgba(34, 197, 94, 0.3); }
.readiness-card.blue .readiness-badge  { color: #38bdf8; background: rgba(56, 189, 248, 0.15); border: 1px solid rgba(56, 189, 248, 0.3); }
.readiness-card.amber .readiness-badge { color: #f59e0b; background: rgba(245, 158, 11, 0.15); border: 1px solid rgba(245, 158, 11, 0.3); }

.readiness-icon { font-size: 20px; }
.readiness-title { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.readiness-badge { font-size: 11px; font-weight: 800; padding: 2px 8px; border-radius: 99px; margin-top: 2px; }
.readiness-desc { font-size: 10px; color: var(--text-secondary); margin: 4px 0 0; line-height: 1.3; }

.bufferbloat-grade-card {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: left;
}
.bufferbloat-big-grade {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
  padding: 0.4rem 1.2rem;
  border-radius: 12px;
}
.bufferbloat-big-grade.grade-a-plus { background: rgba(34, 197, 94, 0.15); color: #22c55e; border: 1px solid rgba(34, 197, 94, 0.3); }
.bufferbloat-big-grade.grade-a      { background: rgba(34, 197, 94, 0.15); color: #22c55e; border: 1px solid rgba(34, 197, 94, 0.3); }
.bufferbloat-big-grade.grade-b      { background: rgba(132, 204, 22, 0.15); color: #84cc16; border: 1px solid rgba(132, 204, 22, 0.3); }
.bufferbloat-big-grade.grade-c      { background: rgba(245, 158, 11, 0.15); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.3); }
.bufferbloat-big-grade.grade-d      { background: rgba(249, 115, 22, 0.15); color: #f97316; border: 1px solid rgba(249, 115, 22, 0.3); }
.bufferbloat-big-grade.grade-f      { background: rgba(239, 68, 68, 0.15); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.3); }

/* ── Privacy & Crowdsourced Diagnostic Suite ──────────── */
.leak-results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.leak-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
}
.leak-icon { font-size: 2rem; }
.leak-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 99px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.leak-badge.secure   { background: rgba(34, 197, 94, 0.15); color: #22c55e; border: 1px solid rgba(34, 197, 94, 0.3); }
.leak-badge.warning  { background: rgba(239, 68, 68, 0.15); color: #ef4444; border: 1px solid rgba(239, 68, 68, 0.3); }
.leak-badge.testing  { background: rgba(56, 189, 248, 0.15); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.3); }
.leak-desc { font-size: 0.85rem; color: var(--text-secondary); margin: 0; line-height: 1.4; }

.community-outage-reporter {
  margin-top: 1.5rem;
  text-align: center;
}
.outage-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(239, 68, 68, 0.1);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}
.outage-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.5);
  transform: translateY(-1px);
}
.pulse-dot-red {
  width: 8px;
  height: 8px;
  background: #ef4444;
  border-radius: 50%;
  animation: pulseDotRed 2s infinite ease-in-out;
}
@keyframes pulseDotRed {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}
.outage-feedback {
  margin-top: 0.75rem;
  padding: 8px 14px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #4ade80;
  border-radius: 8px;
  font-size: 0.85rem;
  display: inline-block;
}

/* ── User Psychology & High-Trust Telemetry Engine ─────── */
.live-telemetry-ticker {
  font-family: var(--font-sans);
  transition: all 0.2s ease;
}
.btn-scorecard-dispute:hover {
  background: rgba(239, 68, 68, 0.25) !important;
  border-color: rgba(239, 68, 68, 0.6) !important;
  transform: translateY(-1px);
}
.physical-triage-card {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.triage-step-card {
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.triage-step-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary-color) !important;
}

/* ── Modals & Scorecard Actions (2026 Resilient Baseline) ── */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.modal-content {
  background: var(--bg-surface, #0f172a);
  border: 1px solid var(--border, rgba(255,255,255,0.15));
  border-radius: var(--radius-lg, 20px);
  padding: 2rem;
  max-width: 600px;
  width: 100%;
  position: relative;
  box-shadow: 0 25px 60px rgba(0,0,0,0.6);
  box-sizing: border-box;
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}
.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-muted, #94a3b8);
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
}
.embed-textarea {
  width: 100%;
  box-sizing: border-box;
  background: var(--bg-card, #1e293b);
  border: 1px solid var(--border, rgba(255,255,255,0.12));
  border-radius: var(--radius-sm, 8px);
  color: var(--text-primary, #f8fafc);
  font-family: var(--font-mono, monospace);
  font-size: 0.85rem;
  padding: 0.875rem;
  margin: 1rem 0;
  resize: vertical;
}
.scorecard-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  align-items: center;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border, rgba(255,255,255,0.08));
}
.btn-scorecard {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--bg-card, #1e293b);
  border: 1px solid var(--border, rgba(255,255,255,0.12));
  color: var(--text-primary, #f8fafc);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm, 6px);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-sans, Inter, sans-serif);
}
.btn-scorecard:hover {
  background: var(--bg-card-hover, #334155);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}
.btn-scorecard-primary {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

/* ── FCC Broadband Nutrition Label (2026 Mandate Standard) ── */
.fcc-nutrition-label {
  background: #ffffff;
  color: #000000;
  border: 3px solid #000000;
  border-radius: 4px;
  padding: 1.25rem 1.5rem;
  max-width: 520px;
  margin: 2rem auto;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  text-align: left;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  box-sizing: border-box;
}
.fcc-label-header {
  border-bottom: 10px solid #000000;
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
}
.fcc-brand-badge {
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.5px;
}
.fcc-isp-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: 0.25rem;
}
.fcc-plan-title {
  font-size: 1rem;
  color: #333333;
}
.fcc-fixed-type {
  font-size: 0.8rem;
  color: #666666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.fcc-divider-thick {
  height: 8px;
  background: #000000;
  margin: 0.5rem 0;
}
.fcc-divider-medium {
  height: 4px;
  background: #000000;
  margin: 0.5rem 0;
}
.fcc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0;
  border-bottom: 1px solid #cccccc;
  font-size: 0.9rem;
  color: #111111;
}
.fcc-row span:first-child {
  padding-right: 1rem;
}
.fcc-price-row {
  font-size: 1.25rem;
  font-weight: 800;
  border-bottom: none;
  padding-bottom: 0.1rem;
}
.fcc-val-bold {
  font-weight: 800;
}
.fcc-subtext {
  font-size: 0.75rem;
  color: #555555;
  line-height: 1.3;
  margin-bottom: 0.4rem;
}
.fcc-section-title {
  font-weight: 800;
  font-size: 0.95rem;
  margin-top: 0.4rem;
  margin-bottom: 0.2rem;
}
.fcc-label-footer {
  font-size: 0.75rem;
  color: #444444;
  margin-top: 0.5rem;
  line-height: 1.4;
}

/* ── High-Retention Visual Journalism & Typography System ──── */
#reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #3b82f6, #10b981, #8b5cf6);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s ease-out;
}

.tldr-summary-box {
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-left: 4px solid #3b82f6;
  border-radius: 12px;
  padding: 20px 24px;
  margin: 24px 0 32px 0;
}
.tldr-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.tldr-icon { font-size: 1.4rem; line-height: 1; }
.tldr-header h4 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}
.tldr-list {
  margin: 0;
  padding-left: 20px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.tldr-list li { margin-bottom: 8px; }
.tldr-list li:last-child { margin-bottom: 0; }

.interactive-article-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  margin: 28px 0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}
.widget-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.widget-badge {
  background: rgba(59, 130, 246, 0.12);
  color: #3b82f6;
  border: 1px solid rgba(59, 130, 246, 0.3);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 6px;
}
.widget-header h4 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}
.widget-controls {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 20px;
}
.widget-control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.widget-controls label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}
.widget-controls input[type="range"] {
  width: 100%;
  accent-color: var(--primary-color, #3b82f6);
  cursor: pointer;
}
.widget-result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(59, 130, 246, 0.08);
  border: 1px dashed rgba(59, 130, 246, 0.3);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 0.95rem;
  color: var(--text-primary);
}
.widget-result strong {
  font-size: 1.3rem;
  color: var(--primary-color, #3b82f6);
  font-family: var(--font-mono);
}

.flowchart-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 28px 0;
}
.flow-node-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.flow-node-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  border-color: var(--primary-color, #3b82f6);
}
.flow-node-step {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--primary-color, #3b82f6);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.flow-node-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.flow-node-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin: 0;
}

.matrix-table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.comparison-matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}
.comparison-matrix-table th {
  background: rgba(255, 255, 255, 0.04);
  padding: 14px 16px;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border);
}
.comparison-matrix-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.comparison-matrix-table tr:hover td {
  background: rgba(59, 130, 246, 0.03);
}

.callout-card {
  border-radius: 12px;
  padding: 18px 20px;
  margin: 26px 0;
  border: 1px solid transparent;
}
.callout-card.pro-tip,
.callout-card.callout-tip {
  background: rgba(16, 185, 129, 0.06);
  border-color: rgba(16, 185, 129, 0.3);
  border-left: 4px solid #10b981;
}
.callout-card.callout-warning {
  background: rgba(245, 158, 11, 0.06);
  border-color: rgba(245, 158, 11, 0.3);
  border-left: 4px solid #f59e0b;
}
.callout-card.callout-deepdive {
  background: rgba(139, 92, 246, 0.06);
  border-color: rgba(139, 92, 246, 0.3);
  border-left: 4px solid #8b5cf6;
}
.callout-icon {
  font-size: 1.4rem;
  line-height: 1;
}
.callout-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.callout-tip .callout-header, .callout-card.pro-tip .callout-header { color: #10b981; }
.callout-warning .callout-header { color: #f59e0b; }
.callout-deepdive .callout-header { color: #8b5cf6; }
.callout-body {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0;
}
.callout-body strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

/* ── Elite 2026 Visual Blog & Guide Content Hierarchy ────── */
.article-meta-badge-deck {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}
.meta-tag.topic-tag {
  background: rgba(59, 130, 246, 0.12);
  color: #3b82f6;
  border: 1px solid rgba(59, 130, 246, 0.3);
}
.meta-tag.time-tag {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.meta-tag.updated-tag {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.article-headline {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.tldr-executive-box {
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-left: 4px solid #3b82f6;
  border-radius: 12px;
  padding: 20px 24px;
  margin: 24px 0 32px 0;
}
.tldr-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.12);
  padding: 3px 8px;
  border-radius: 6px;
  margin-bottom: 12px;
}
.tldr-points {
  margin: 0;
  padding-left: 20px;
  line-height: 1.75;
  color: var(--text-secondary);
}
.tldr-points li { margin-bottom: 8px; }
.tldr-points li:last-child { margin-bottom: 0; }

.in-article-calculator-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  margin: 28px 0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}
.calc-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 18px;
}
.calc-icon { font-size: 1.6rem; line-height: 1; }
.calc-header h4 {
  margin: 0 0 4px 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}
.calc-header p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.calc-slider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.slider-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}
.calc-range {
  width: 100%;
  accent-color: var(--primary-color, #3b82f6);
  cursor: pointer;
}
.calc-verdict-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(59, 130, 246, 0.08);
  border: 1px dashed rgba(59, 130, 246, 0.35);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 0.95rem;
  color: var(--text-primary);
}
.verdict-speed {
  font-size: 1.35rem;
  color: var(--primary-color, #3b82f6);
  font-family: var(--font-mono);
  font-weight: 800;
}

.visual-node-flowchart {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 12px;
  margin: 24px 0 32px 0;
}
.node-card {
  flex: 1;
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}
.node-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  border-color: var(--primary-color, #3b82f6);
}
.node-number {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--primary-color, #3b82f6);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.node-content h5 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 6px 0;
}
.node-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}
.node-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.25rem;
  padding: 0 4px;
}
@media (max-width: 768px) {
  .node-arrow { display: none; }
}

.matrix-wrapper {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.matrix-wrapper h4 {
  margin: 0;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border);
  font-size: 1.05rem;
  color: var(--text-primary);
}
.authority-matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}
.authority-matrix-table th {
  background: rgba(255, 255, 255, 0.04);
  padding: 14px 16px;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border);
}
.authority-matrix-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.authority-matrix-table tr:hover td {
  background: rgba(59, 130, 246, 0.03);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}
.status-pill.green {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}
.status-pill.yellow {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
}
.status-pill.red {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.faq-accordion-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 24px 0;
}
.faq-accordion-group details.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  padding: 0;
}
.faq-accordion-group summary {
  padding: 14px 18px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-accordion-group summary::-webkit-details-marker { display: none; }
.faq-accordion-group summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}
.faq-accordion-group details[open] summary::after { content: "−"; }
.faq-accordion-group .faq-answer {
  padding: 0 18px 16px 18px;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.toc-scroll-spy-active {
  color: var(--primary-color, #3b82f6) !important;
  font-weight: 700 !important;
  border-left: 2px solid var(--primary-color, #3b82f6);
  padding-left: 8px;
}

.article-feedback-widget {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 32px 0 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.feedback-prompt {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}
.feedback-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.btn-feedback {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  color: var(--text-secondary);
}
.btn-feedback:hover {
  background: var(--primary-color, #3b82f6);
  color: #ffffff;
  border-color: var(--primary-color, #3b82f6);
}
.feedback-response {
  font-size: 0.9rem;
  color: #10b981;
  font-weight: 600;
}

/* ── Cognitive UX & Behavioral Psychology Engine ──────────── */
.milestone-bar {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 14px;
}
.milestone-step {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s ease;
}
.milestone-step.completed {
  color: #10b981;
}
.milestone-step.active {
  color: #38bdf8;
  font-weight: 700;
}
.milestone-step.pending {
  color: var(--text-muted);
}
.milestone-icon {
  font-family: monospace;
  font-weight: 800;
}

.app-unlock-row {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}
.app-unlock-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  opacity: 0.45;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.app-unlock-badge.unlocked-active {
  opacity: 1;
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
  transform: translateY(-1px);
  box-shadow: 0 2px 10px rgba(16, 185, 129, 0.2);
}

.zero-spam-seal {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.2px;
}

.human-verdict-card {
  border-radius: 14px;
  padding: 20px 24px;
  text-align: left;
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}
.human-verdict-card.status-green {
  border-left: 4px solid #10b981;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.06), var(--bg-card));
}
.human-verdict-card.status-yellow {
  border-left: 4px solid #f59e0b;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.06), var(--bg-card));
}
.human-verdict-card.status-red {
  border-left: 4px solid #ef4444;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.06), var(--bg-card));
}
.verdict-header-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.verdict-badge {
  font-size: 0.8rem;
  font-weight: 800;
}
.verdict-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}
.verdict-summary {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0 0 6px 0;
  font-weight: 500;
}
.verdict-desc {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 0;
}

.community-benchmark-card {
  background: rgba(56, 189, 248, 0.06);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 10px;
  padding: 12px 18px;
  text-align: left;
}
.community-benchmark-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-primary);
}
.bench-icon {
  font-size: 1.1rem;
}
.bench-text {
  line-height: 1.4;
  color: var(--text-secondary);
}

/* ── Speed Test HUD & Results Grid ─────────────────────── */
.speed-test-hud {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  padding: 2rem;
  max-width: 820px;
  margin: 1.5rem auto 2.5rem;
  position: relative;
  text-align: center;
}

.test-phase-label {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.test-status {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  min-height: 280px;
}

.test-status canvas {
  max-width: 100%;
  height: auto;
  display: block;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.75rem;
}

@media (max-width: 768px) {
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.result-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 0.75rem;
  text-align: center;
  transition: all var(--transition);
}

.result-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.result-card-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.result-card-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1.2;
}

.result-card-unit {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ── Footer Architecture & Multi-Column Grid ─────────────── */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  margin-top: 5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-disclaimer {
  margin-bottom: 1.5rem;
}

.footer-trust-banner {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
  margin-bottom: 2.5rem;
}

.footer-trust-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-entity-notice {
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 750px;
  line-height: 1.5;
}

.footer-entity-notice strong {
  color: var(--text-primary);
}

.footer-badges-mesh {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

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

.footer-col h3 {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-col p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col ul li a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: color var(--transition);
  text-decoration: none;
}

.footer-col ul li a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

.footer-address-block {
  margin: 1rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-social-mesh {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1rem;
}

.social-icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.social-icon-link:hover {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  background: var(--bg);
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom-inner a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-bottom-inner a:hover {
  color: var(--primary-color);
}

/* ── Search Modal & Floating Controls ───────────────────── */
.search-modal {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
}

.search-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
}

.search-dialog {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  z-index: 1;
}

.search-header {
  display: flex;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  gap: 0.75rem;
}

.search-input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-family: var(--font-sans);
  outline: none;
}

.search-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.search-footer {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-card);
}

.backtop-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  transition: all var(--transition);
  z-index: 900;
}

.backtop-btn:hover {
  background: var(--primary-color);
  color: #fff;
  transform: translateY(-3px);
}

/* ── Blog Topic Filter Chips & Smart Pagination ─────────── */
.topic-filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin: 1.5rem 0 0.5rem;
}

.topic-filter-btn {
  background: var(--bg-card, rgba(255,255,255,0.05));
  color: var(--text-secondary, #94a3b8);
  border: 1px solid var(--border, rgba(255,255,255,0.12));
  border-radius: 99px;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.topic-filter-btn:hover {
  background: var(--bg-surface, rgba(255,255,255,0.1));
  color: var(--text-primary, #ffffff);
  border-color: var(--primary-color, #6b1d9c);
  transform: translateY(-1px);
}

.topic-filter-btn.active {
  background: var(--primary-color, #6b1d9c);
  color: #ffffff;
  border-color: var(--primary-color, #6b1d9c);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color, #6b1d9c) 30%, transparent);
}

.pagination-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin: 2.5rem 0 1rem;
  flex-wrap: wrap;
}

.pagination-btn {
  background: var(--bg-card, rgba(255,255,255,0.05));
  color: var(--text-primary, #ffffff);
  border: 1px solid var(--border, rgba(255,255,255,0.12));
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  min-width: 40px;
  text-align: center;
}

.pagination-btn:hover:not(:disabled) {
  background: var(--bg-surface, rgba(255,255,255,0.12));
  border-color: var(--primary-color, #6b1d9c);
  transform: translateY(-1px);
}

.pagination-btn.active {
  background: var(--primary-color, #6b1d9c);
  color: #ffffff;
  border-color: var(--primary-color, #6b1d9c);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color, #6b1d9c) 30%, transparent);
}

.pagination-btn:disabled, .pagination-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── RTL Support ────────────────────────────────────────── */
[dir="rtl"] .breadcrumb-item + .breadcrumb-item::before { content: '\\'; }
[dir="rtl"] .step-card { flex-direction: row-reverse; }
[dir="rtl"] .faq-question { flex-direction: row-reverse; }
[dir="rtl"] .author-byline { flex-direction: row-reverse; }
[dir="rtl"] .main-nav ul { flex-direction: row-reverse; }
[dir="rtl"] .header-inner { flex-direction: row-reverse; }


/* ── Per-Site Theme Preset Override ───────────────────────────── */
:root, [data-theme="dark"] {
  --primary-color: #e10a0a;
  --accent-color: #f59e0b;
  --dark-bg: #0f0a0a;
  --bg: #0f0a0a;
  --bg-surface: #1f0a0e;
  --bg-card: #1f0a0e;
  --text-glow: rgba(225,29,72,0.3);
}

/* ── Per-Site Font Pairing Override ───────────────────────────── */
:root { --font-sans: 'Inter', system-ui, -apple-system, sans-serif; --font-heading: 'Outfit', system-ui, sans-serif; }
body { font-family: var(--font-sans); }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading, var(--font-sans)); }