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

:root {
  --font-sans: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'Space Grotesk', Courier, monospace;

  /* HSL Tailored Light Theme System */
  --bg-light-base: 220 25% 97%;
  --bg-light-surface: 220 20% 93%;
  --bg-light-card: 0 0% 100%;
  --bg-light-card-hover: 220 20% 95%;
  
  --border-color: 220 15% 85%;
  --border-color-hover: 220 15% 75%;
  
  /* High-Contrast Accent Colors for Light Theme */
  --accent-neon-green-hsl: 142 75% 30%;
  --accent-neon-blue-hsl: 210 100% 40%;
  --accent-neon-cyan-hsl: 195 100% 35%;
  --accent-neon-purple-hsl: 270 70% 45%;
  --accent-neon-amber-hsl: 30 90% 40%;
  --accent-neon-red-hsl: 355 80% 45%;

  --accent-neon-green: hsl(var(--accent-neon-green-hsl));
  --accent-neon-blue: hsl(var(--accent-neon-blue-hsl));
  --accent-neon-cyan: hsl(var(--accent-neon-cyan-hsl));
  --accent-neon-purple: hsl(var(--accent-neon-purple-hsl));
  --accent-neon-amber: hsl(var(--accent-neon-amber-hsl));
  --accent-neon-red: hsl(var(--accent-neon-red-hsl));

  /* CSS Theme Mappings */
  --bg-base: hsl(var(--bg-light-base));
  --bg-surface: hsl(var(--bg-light-surface));
  --bg-card: hsl(var(--bg-light-card));
  --bg-card-hover: hsl(var(--bg-light-card-hover));
  
  --text-primary: hsl(220 25% 12%);
  --text-secondary: hsl(220 15% 38%);
  --text-muted: hsl(220 10% 55%);
  
  --shadow-neon: 0 0 20px hsla(var(--accent-neon-blue-hsl) / 0.08);
  --shadow-card: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
  --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(at 0% 0%, hsla(var(--accent-neon-blue-hsl) / 0.04) 0px, transparent 50%),
    radial-gradient(at 100% 100%, hsla(var(--accent-neon-purple-hsl) / 0.04) 0px, transparent 50%);
  background-attachment: fixed;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Glassmorphism Panel */
.glass-panel {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid hsl(var(--border-color));
  box-shadow: var(--shadow-card);
  border-radius: 20px;
  padding: 2rem;
  margin-bottom: 2rem;
  transition: var(--transition-smooth);
}

.glass-panel:hover {
  border-color: hsl(var(--border-color-hover));
  box-shadow: 0 15px 40px -10px rgba(15, 23, 42, 0.12), 0 0 25px hsla(var(--accent-neon-cyan-hsl) / 0.05);
}

/* Header & Portal branding */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid hsl(var(--border-color));
}

.branding-logo {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.branding-logo span {
  background: linear-gradient(135deg, var(--accent-neon-cyan), var(--accent-neon-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.logo-mark {
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.branding-logo:hover .logo-mark {
  transform: rotate(5deg) scale(1.05);
}

/* Header navigation links */
.header-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.header-nav a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
  position: relative;
  padding: 4px 0;
}

.header-nav a:hover {
  color: var(--accent-neon-cyan);
}

.header-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-neon-cyan);
  transition: var(--transition-smooth);
}

.header-nav a:hover::after {
  width: 100%;
}

/* Mobile toggle button */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 110;
}

.mobile-nav-toggle .line {
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 4px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Animate to 'X' */
.mobile-nav-toggle.active .line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-nav-toggle.active .line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.active .line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 920px) {
  header {
    position: relative;
  }

  .mobile-nav-toggle {
    display: flex;
  }

  .header-nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    width: 250px;
    background: rgba(13, 19, 33, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 1.5rem;
    gap: 1.25rem;
    z-index: 100;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }

  .header-nav.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .header-nav a {
    width: 100%;
    font-size: 1rem;
    padding: 8px 12px;
    color: rgba(255, 255, 255, 0.75);
    border-radius: 4px;
    transition: background-color 0.2s ease, color 0.25s ease;
  }

  .header-nav a:hover {
    color: var(--accent-neon-cyan);
    background-color: rgba(255, 255, 255, 0.05);
  }

  .header-nav a::after {
    display: none;
  }
}

/* Breadcrumbs navigation */
.breadcrumbs {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.breadcrumbs a:hover {
  color: var(--accent-neon-cyan);
}

.breadcrumbs span.separator::after {
  content: "/";
  margin-left: 8px;
  color: var(--text-muted);
}

.hero-breadcrumbs {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.hero-breadcrumbs a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.hero-breadcrumbs a:hover {
  color: var(--accent-neon-cyan);
}

.hero-breadcrumbs span.separator::after {
  content: "/";
  margin-left: 8px;
  color: rgba(255, 255, 255, 0.4);
}

/* Title Styling */
h1 {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-primary) 50%, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Compliance Banner */
.compliance-banner {
  background: hsla(var(--accent-neon-amber-hsl) / 0.06);
  border: 1px solid hsla(var(--accent-neon-amber-hsl) / 0.3);
  border-left: 4px solid var(--accent-neon-amber);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.compliance-icon {
  font-size: 1.25rem;
  color: var(--accent-neon-amber);
  line-height: 1;
}

.compliance-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Quick Diagnosis */
h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 1.2rem;
  border-radius: 2px;
  background: var(--accent-neon-cyan);
}

.quick-diagnosis-box {
  border-left: 3px solid var(--accent-neon-cyan);
  background: hsla(var(--accent-neon-cyan-hsl) / 0.05);
  padding: 1rem 1.25rem;
  border-radius: 0 10px 10px 0;
  margin-bottom: 2rem;
}

.quick-diagnosis-text {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-secondary);
  font-style: italic;
}

/* Visual Asset Hook - Exact 600x338px (16:9) */
.visual-asset-container {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
}

.visual-asset-hook {
  width: 600px;
  height: 338px;
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid hsl(var(--border-color));
  box-shadow: var(--shadow-neon);
  background: linear-gradient(135deg, var(--bg-surface), var(--bg-card));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: var(--transition-smooth);
}

.visual-asset-hook:hover {
  border-color: var(--accent-neon-blue);
  box-shadow: 0 0 30px hsla(var(--accent-neon-blue-hsl) / 0.15);
}

.visual-asset-hook img {
  width: 600px;
  height: 338px;
  object-fit: cover;
  display: block;
}

.visual-asset-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  text-align: center;
  padding: 1.5rem;
}

.placeholder-icon {
  font-size: 2.5rem;
  color: var(--accent-neon-cyan);
  opacity: 0.8;
  animation: float 3s ease-in-out infinite;
}

.placeholder-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(0, 0, 0, 0.03);
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid hsl(var(--border-color));
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Step-by-Step Resolution */
.resolution-heading::before {
  background: var(--accent-neon-green);
}

.step-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 2rem;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 12px;
  transition: var(--transition-smooth);
}

.step-item:hover {
  border-color: hsl(var(--border-color-hover));
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.step-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: hsla(var(--accent-neon-green-hsl) / 0.08);
  color: var(--accent-neon-green);
  border: 1px solid hsla(var(--accent-neon-green-hsl) / 0.3);
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: bold;
}

.step-checkbox-container {
  display: flex;
  align-items: center;
  height: 24px;
  flex-shrink: 0;
}

.step-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid hsl(var(--border-color-hover));
  border-radius: 4px;
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: var(--transition-smooth);
}

.step-checkbox::before {
  content: "";
  width: 10px;
  height: 10px;
  transform: scale(0);
  transition: 100ms transform ease-in-out;
  box-shadow: inset 1em 1em var(--accent-neon-green);
  clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

.step-checkbox:checked {
  border-color: var(--accent-neon-green);
  background: hsla(var(--accent-neon-green-hsl) / 0.1);
}

.step-checkbox:checked::before {
  transform: scale(1);
}

.step-content {
  flex-grow: 1;
}

.step-text {
  font-size: 1rem;
  color: var(--text-primary);
  line-height: 1.5;
  transition: var(--transition-smooth);
}

.step-checkbox:checked ~ .step-content .step-text {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Alternative Causes & Edge Cases */
.alt-causes-heading::before {
  background: var(--accent-neon-amber);
}

.alt-causes-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.alt-cause-item {
  position: relative;
  padding-left: 26px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.alt-cause-item::before {
  content: "⚡";
  position: absolute;
  left: 4px;
  top: 2px;
  color: var(--accent-neon-amber);
  font-size: 0.8rem;
}

/* Footer Styling */
footer {
  text-align: center;
  padding: 2.5rem 0;
  margin-top: 4rem;
  border-top: 1px solid hsl(var(--border-color));
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  margin-bottom: 0.75rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-smooth);
}

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

.footer-dot {
  color: hsl(var(--border-color));
  font-size: 0.6rem;
  user-select: none;
}

.google-partner-link {
  margin-bottom: 1rem;
  font-size: 0.8rem;
}

.google-partner-link a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-smooth);
  border-bottom: 1px dashed hsl(var(--border-color));
  padding-bottom: 2px;
}

.google-partner-link a:hover {
  color: var(--accent-neon-blue);
  border-bottom-color: var(--accent-neon-blue);
}

/* AdSense Banner Placement */
.top-ad-banner {
  display: block;
  margin: 0 auto;
  padding: 0;
  width: 100%;
  text-align: center;
  overflow: hidden;
}

/* Home Portal Styles */
.portal-hero-row {
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  background-color: #0d1321;
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/dark_tech_hero_bg.png');
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4.5rem 1.5rem;
  margin-top: 0; /* Reset negative margin to prevent overlap with ad banner */
  margin-bottom: 3.5rem;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.portal-hero-row.hero-printers {
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/bg_printers.png');
}
.portal-hero-row.hero-appliance-errors {
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/bg_appliances.png');
}
.portal-hero-row.hero-wifi-routers {
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/bg_routers.png');
}
.portal-hero-row.hero-smart-tvs {
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/bg_tvs.png');
}
.portal-hero-row.hero-pc-laptop-help {
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/bg_pcs.png');
}
.portal-hero-row.hero-mobile-phone-fix {
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/bg_mobile.png');
}
.portal-hero-row.hero-smart-home {
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/bg_smarthome.png');
}
.portal-hero-row.hero-device-pairing {
  background-image: linear-gradient(90deg, rgba(13, 19, 33, 0.35) 0%, rgba(13, 19, 33, 0.75) 25%, rgba(13, 19, 33, 0.75) 75%, rgba(13, 19, 33, 0.35) 100%), url('/assets/images/bg_pairing.png');
}

.portal-hero-row::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(0, 210, 255, 0.06) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.portal-hero-content {
  max-width: 800px;
  width: 100%;
  text-align: center;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.portal-hero-row h1 {
  font-size: 3rem;
  font-weight: 800;
  margin: 0;
  background: linear-gradient(135deg, #ffffff 60%, var(--accent-neon-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.25;
}

.portal-hero-row p {
  color: hsl(220 15% 75%);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto;
}

.portal-search-container {
  max-width: 600px;
  width: 100%;
  margin: 1rem auto 0;
  position: relative;
  z-index: 10;
}

.portal-search-input {
  width: 100%;
  padding: 1.1rem 1.5rem;
  padding-left: 3rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: var(--transition-smooth);
}

.portal-search-input:focus {
  outline: none;
  border-color: var(--accent-neon-cyan);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 25px hsla(var(--accent-neon-cyan-hsl) / 0.25);
}

.portal-search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.4);
  pointer-events: none;
}

/* Search Dropdown Results */
.portal-search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.5rem;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid hsl(var(--border-color));
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
  max-height: 350px;
  overflow-y: auto;
  z-index: 999;
  display: none;
  text-align: left;
}

.portal-search-results.active {
  display: block;
}

.search-result-item {
  display: block;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background: hsla(var(--accent-neon-blue-hsl) / 0.08);
  color: var(--accent-neon-blue);
}

.search-no-results {
  padding: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  text-align: center;
}

@media (max-width: 650px) {
  .portal-hero-row h1 {
    font-size: 2.25rem;
  }
  .portal-hero-row {
    padding: 3rem 1rem;
    margin-top: -1rem;
  }
}

/* Library Header Bar */
.library-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: 1.5rem;
  margin-bottom: 2.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid hsl(var(--border-color));
}

.library-header-left h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.library-header-left h2::before {
  content: none;
}

.library-header-left span {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

.library-header-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.sort-button-group {
  display: flex;
  background: rgba(0, 0, 0, 0.04);
  padding: 3px;
  border-radius: 8px;
}

.sort-btn {
  border: none;
  background: none;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.sort-btn.active {
  background: #ffffff;
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.layout-toggle-group {
  display: flex;
  gap: 6px;
}

.layout-btn {
  border: 1px solid hsl(var(--border-color));
  background: #ffffff;
  color: var(--text-muted);
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.layout-btn.active {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.05);
}

@media (max-width: 650px) {
  .library-header-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }
  .library-header-right {
    width: 100%;
    justify-content: space-between;
  }
}

/* Grid layout for the pillars */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
  margin-bottom: 4rem;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 18px;
  padding: 1.75rem;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.015);
}

/* Category borders */
.pillar-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--card-accent, var(--accent-neon-blue));
  transition: var(--transition-smooth);
}

/* Theme accent color variables */
.pillar-card.pc-laptop-help { --card-accent: #f97316; }
.pillar-card.printers { --card-accent: #06b6d4; }
.pillar-card.mobile-phone-fix { --card-accent: #ec4899; }
.pillar-card.wifi-routers { --card-accent: #f59e0b; }
.pillar-card.smart-home { --card-accent: #14b8a6; }
.pillar-card.appliance-errors { --card-accent: #22c55e; }
.pillar-card.smart-tvs { --card-accent: #8b5cf6; }
.pillar-card.device-pairing { --card-accent: #3b82f6; }

.pillar-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--card-accent) 25%, hsl(var(--border-color)));
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 16px -8px rgba(15, 23, 42, 0.05);
}

.pillar-card:hover::before {
  width: 6px;
}

/* Card Header */
.pillar-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.pillar-icon-wrapper {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--card-accent);
  background: color-mix(in srgb, var(--card-accent) 10%, transparent);
}

.pillar-guides-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pillar-guides-count strong {
  color: var(--text-primary);
  font-size: 0.85rem;
}

/* Title and Description */
.pillar-title {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.pillar-title::before {
  display: none;
}

.pillar-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 1.25rem;
}

/* Tags section */
.pillar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 1.5rem;
  margin-top: auto; /* Push links to bottom */
}

.pillar-tag {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(0, 0, 0, 0.035);
  padding: 4px 10px;
  border-radius: 6px;
  transition: var(--transition-smooth);
}

.pillar-card:hover .pillar-tag {
  background: rgba(0, 0, 0, 0.05);
}

/* Open Guides Link */
.pillar-action-link {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-smooth);
  align-self: flex-start;
}

.pillar-action-link .arrow {
  transition: transform 0.2s ease;
}

.pillar-card:hover .pillar-action-link {
  color: var(--card-accent);
}

.pillar-card:hover .pillar-action-link .arrow {
  transform: translateX(4px);
}

/* Sample Troubleshooting List inside Pillar detail page (scaffold) */
.guide-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 1.5rem;
}

.guide-item-card {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid hsl(var(--border-color));
  border-radius: 12px;
  padding: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-smooth);
}

.guide-item-card:hover {
  border-color: var(--accent-neon-cyan);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.guide-item-info h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.guide-item-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.guide-item-arrow {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: bold;
}

.guide-item-card:hover .guide-item-arrow {
  color: var(--accent-neon-cyan);
  transform: translateX(2px);
}

/* Creative Homepage Sections */
.extended-pillars-sections {
  margin-top: 5rem;
  display: flex;
  flex-direction: column;
  gap: 6rem; /* Wide gap allows Google Auto Ads to embed ads naturally */
}

.home-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 2px solid hsl(var(--border-color));
  padding-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-header h2::before {
  content: none; /* remove standard vertical line from h2 in homepage sections */
}

.view-all-link {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--accent-neon-blue);
  transition: var(--transition-smooth);
}

.view-all-link:hover {
  color: var(--accent-neon-cyan);
  transform: translateX(3px);
}

/* Printers deck (Spotlight Cards) */
.featured-card-deck {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.deck-card {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
}

.deck-card:hover {
  border-color: var(--accent-neon-green);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
}

.card-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  align-self: flex-start;
  text-transform: uppercase;
}

.green-badge {
  background: hsla(var(--accent-neon-green-hsl) / 0.1);
  color: var(--accent-neon-green);
  border: 1px solid hsla(var(--accent-neon-green-hsl) / 0.2);
}

.deck-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.symptom-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.diagnosis-snippet {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.card-action-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
  background: var(--bg-surface);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: 6px;
  text-align: center;
  margin-top: auto;
  border: 1px solid hsl(var(--border-color));
  transition: var(--transition-smooth);
}

.deck-card:hover .card-action-btn {
  background: var(--accent-neon-green);
  color: #ffffff;
  border-color: var(--accent-neon-green);
}

/* Appliances Table */
.diag-table {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.diag-table-header {
  display: grid;
  grid-template-columns: 140px 1.5fr 2fr 100px;
  background: var(--bg-surface);
  border-bottom: 1px solid hsl(var(--border-color));
  padding: 1rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.diag-table-row {
  display: grid;
  grid-template-columns: 140px 1.5fr 2fr 100px;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid hsl(var(--border-color));
  align-items: center;
  transition: var(--transition-smooth);
}

.diag-table-row:last-child {
  border-bottom: none;
}

.diag-table-row:hover {
  background: var(--bg-card-hover);
}

.code-badge {
  background: hsla(var(--accent-neon-amber-hsl) / 0.1);
  color: var(--accent-neon-amber);
  border: 1px solid hsla(var(--accent-neon-amber-hsl) / 0.2);
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 4px;
}

.col-symptom strong {
  color: var(--text-primary);
  font-size: 0.95rem;
}

.col-diagnosis {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.table-action-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-neon-amber);
  text-decoration: none;
}

.table-action-link:hover {
  text-decoration: underline;
}

/* WiFi Routers Dashboard */
.split-dashboard {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.5rem;
}

.routers-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dash-router-row {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 12px;
  padding: 1.1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition-smooth);
}

.dash-router-row:hover {
  transform: translateX(4px);
  border-color: var(--accent-neon-blue);
  box-shadow: var(--shadow-card);
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.04);
  padding: 2px 6px;
  border-radius: 4px;
  margin-right: 8px;
  color: var(--text-muted);
}

.led-indicator-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}

.led-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.led-bulb {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
}

/* LED Indicator States */
.led-orange-flash {
  background-color: #f59e0b;
  box-shadow: 0 0 8px #f59e0b;
  animation: led-blink 1.5s infinite;
}

.led-amber-solid {
  background-color: #d97706;
  box-shadow: 0 0 8px #d97706;
}

.led-red-blink {
  background-color: #ef4444;
  box-shadow: 0 0 8px #ef4444;
  animation: led-blink 0.8s infinite;
}

@keyframes led-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.tips-box {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 16px;
  padding: 1.5rem;
  height: 100%;
}

.tips-box h3 {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
  border-bottom: 1px solid hsl(var(--border-color));
  padding-bottom: 0.5rem;
}

.tips-box ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tips-box li {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* TV Split Asymmetric Panel */
.split-asymmetric-panel {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem;
}

.featured-tv-block {
  background: var(--bg-card);
  border: 1.5px solid hsl(var(--border-color));
  border-radius: 20px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: var(--shadow-card);
}

.tv-badge {
  background: hsla(var(--accent-neon-purple-hsl) / 0.1);
  color: var(--accent-neon-purple);
  border: 1px solid hsla(var(--accent-neon-purple-hsl) / 0.2);
  align-self: flex-start;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.featured-tv-block h3 {
  font-size: 1.4rem;
  margin: 0;
  color: var(--text-primary);
}

.tv-symptom {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-neon-purple);
}

.tv-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.tv-spec-visual {
  display: flex;
  gap: 10px;
  margin: 0.5rem 0;
}

.visual-aspect-tag, .visual-resolution-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid hsl(var(--border-color));
  padding: 2px 8px;
  border-radius: 4px;
}

.featured-btn {
  font-family: var(--font-mono);
  font-weight: 700;
  text-decoration: none;
  background: var(--accent-neon-purple);
  color: #ffffff;
  padding: 12px 18px;
  border-radius: 8px;
  text-align: center;
  transition: var(--transition-smooth);
}

.featured-btn:hover {
  background: hsl(var(--accent-neon-purple-hsl));
  transform: translateY(-2px);
  box-shadow: 0 4px 15px hsla(var(--accent-neon-purple-hsl) / 0.2);
}

.sub-tv-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tv-sub-card {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 12px;
  padding: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: var(--transition-smooth);
}

.tv-sub-card:hover {
  border-color: var(--accent-neon-purple);
}

.brand-sub-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.tv-sub-card h4 {
  font-size: 1rem;
  margin: 0;
  color: var(--text-primary);
}

.tv-sub-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 0;
}

.tv-sub-card a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-neon-purple);
  text-decoration: none;
  margin-top: 4px;
}

/* PC Motherboard Beep Board */
.pc-board-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.pc-column {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.pc-column h3 {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  border-bottom: 1px solid hsl(var(--border-color));
  padding-bottom: 0.5rem;
}

.code-cards-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.diag-code-item {
  display: flex;
  gap: 12px;
  padding: 1rem;
  background: var(--bg-surface);
  border: 1px solid hsl(var(--border-color));
  border-radius: 10px;
}

.indicator-marker {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 4px 6px;
  border-radius: 4px;
  height: fit-content;
}

.beep-marker {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.blink-marker {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.diag-code-details {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.diag-code-details strong {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.diag-code-details p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

.diag-code-details a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-neon-red);
  text-decoration: none;
  margin-top: 4px;
}

/* Mobile Phone Cards (Pocket Screen layout) */
.pocket-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.pocket-phone-card {
  background: #1e293b; /* smartphone dark bezels */
  border: 8px solid #0f172a;
  border-radius: 32px;
  padding: 1.25rem;
  height: 310px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
  transition: var(--transition-smooth);
}

.pocket-phone-card:hover {
  transform: translateY(-8px) scale(1.02);
}

.phone-screen-header {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 6px;
}

.phone-screen-body {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  color: #ffffff;
}

.phone-brand {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-neon-cyan);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.phone-screen-body h3 {
  font-size: 1.2rem;
  margin: 4px 0 8px;
  color: #ffffff;
}

.phone-symptom {
  font-size: 0.85rem;
  color: #94a3b8;
  line-height: 1.4;
  margin-bottom: auto;
}

.phone-checklist-preview {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: 8px;
  font-size: 0.75rem;
  margin-bottom: 1rem;
  color: #e2e8f0;
}

.chk-box {
  color: var(--accent-neon-cyan);
  font-weight: bold;
}

.phone-launch-btn {
  background: #3b82f6;
  color: #ffffff;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
  padding: 10px;
  border-radius: 8px;
  transition: var(--transition-smooth);
}

.pocket-phone-card:hover .phone-launch-btn {
  background: var(--accent-neon-cyan);
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.3);
}

/* Smart Home sidebar & Tag list */
.smarthome-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.5rem;
}

.smarthome-sidebar {
  border-right: 1.5px solid hsl(var(--border-color));
  padding-right: 1.5rem;
}

.smarthome-pills {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.smarthome-pills span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.smarthome-pills span:hover, .smarthome-pills .active-pill {
  background: hsla(var(--accent-neon-purple-hsl) / 0.1);
  border-color: var(--accent-neon-purple);
  color: var(--text-primary);
}

.smarthome-content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.smarthome-box-card {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: var(--transition-smooth);
}

.smarthome-box-card:hover {
  border-color: var(--accent-neon-purple);
  box-shadow: var(--shadow-card);
}

.category-indicator {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

.smarthome-box-card h4 {
  font-size: 1.05rem;
  margin: 0;
  color: var(--text-primary);
}

.symptom-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-neon-purple);
}

.diag-preview {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: auto;
}

.smarthome-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-neon-purple);
  text-decoration: none;
  margin-top: 8px;
}

/* Device Pairing Bluetooth Signal Registry */
.pairing-registry {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pairing-row {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  display: grid;
  grid-template-columns: 1.2fr 2fr 130px;
  gap: 1.5rem;
  align-items: center;
  transition: var(--transition-smooth);
}

.pairing-row:hover {
  border-color: var(--accent-neon-cyan);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.pairing-device-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pairing-type {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.pairing-first-step {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.badge-step {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-neon-cyan);
  font-size: 0.75rem;
  margin-right: 4px;
}

.pairing-row-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-neon-cyan);
  text-decoration: none;
  text-align: right;
}

/* Pulse Animation for Signal Icon */
.signal-pulse-wrapper {
  position: relative;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-neon-cyan);
}

.pulse-ring {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--accent-neon-cyan);
  animation: pulse-ring-anim 2s infinite ease-out;
  opacity: 0;
}

@keyframes pulse-ring-anim {
  0% { transform: scale(0.5); opacity: 0.8; }
  100% { transform: scale(1.3); opacity: 0; }
}

@media (max-width: 900px) {
  .split-dashboard, .split-asymmetric-panel, .pc-board-grid, .smarthome-layout {
    grid-template-columns: 1fr;
  }
  .smarthome-sidebar {
    border-right: none;
    border-bottom: 1.5px solid hsl(var(--border-color));
    padding-right: 0;
    padding-bottom: 1.5rem;
    margin-bottom: 1rem;
  }
  .smarthome-pills {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .pairing-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .pairing-row-btn {
    text-align: left;
  }
}

/* Responsive adjustments */
@media (max-width: 650px) {
  body {
    background-size: 200% 200%;
  }

  .container {
    padding: 1rem;
  }
  
  .glass-panel {
    padding: 1.25rem;
    border-radius: 14px;
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  .visual-asset-hook {
    height: 0;
    padding-bottom: 56.33%; /* Maintain 16:9 ratio dynamically on mobile */
    width: 100%;
  }
  
  .visual-asset-hook img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }

  .visual-asset-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
  }
}

/* List layout overrides for the library grid */
@media (min-width: 769px) {
  .pillars-grid.list-layout {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .pillars-grid.list-layout .pillar-card {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    gap: 1.5rem;
  }

  .pillars-grid.list-layout .pillar-card-header {
    margin-bottom: 0;
    gap: 1.25rem;
    flex-shrink: 0;
    min-width: 140px;
  }

  .pillars-grid.list-layout .pillar-title {
    margin-bottom: 0;
    font-size: 1.15rem;
    min-width: 170px;
    flex-shrink: 0;
  }

  .pillars-grid.list-layout .pillar-desc {
    margin-bottom: 0;
    flex-grow: 1;
    font-size: 0.85rem;
  }

  .pillars-grid.list-layout .pillar-tags {
    margin-bottom: 0;
    margin-top: 0;
    gap: 6px;
    flex-shrink: 0;
    max-width: 320px;
    justify-content: flex-start;
  }

  .pillars-grid.list-layout .pillar-action-link {
    margin-top: 0;
    flex-shrink: 0;
    align-self: center;
  }
}

/* Guided Device Troubleshooter Panel Styles */
.flowchart-title-bar {
  text-align: center;
  margin-top: 1rem;
  margin-bottom: 2.25rem;
}

.flowchart-title-bar h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 6px;
  justify-content: center;
}

.flowchart-title-bar h2::before {
  display: none; /* Hide h2 vertical bar for title bar */
}

.flowchart-title-bar p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.guided-troubleshooter-card {
  background: var(--bg-card);
  border: 1px solid hsl(var(--border-color));
  border-radius: 18px;
  padding: 2rem;
  margin-bottom: 3.5rem;
  box-shadow: 0 4px 20px -5px rgba(15, 23, 42, 0.02);
}

.wizard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid hsl(var(--border-color));
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
}

.wizard-title-area {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.wizard-icon-badge {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 182, 212, 0.08);
  border-radius: 8px;
  color: var(--accent-neon-cyan);
}

.wizard-title-text h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 2px 0;
}

.wizard-title-text p {
  font-size: 0.825rem;
  color: var(--text-muted);
  margin: 0;
}

.wizard-actions {
  display: flex;
  gap: 10px;
}

.wizard-action-btn {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid hsl(var(--border-color));
  background: #ffffff;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: var(--transition-smooth);
}

.wizard-action-btn:hover {
  border-color: hsl(var(--border-color-hover));
  color: var(--text-primary);
  background: #f8fafc;
}

.wizard-action-btn.reset-btn:hover {
  border-color: #3b82f6;
  color: #3b82f6;
}

.wizard-step-indicator {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-neon-cyan);
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.wizard-question {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.wizard-question::before {
  display: none; /* Hide h2 vertical bar for question */
}

.wizard-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}

.wizard-option-btn {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  background: #ffffff;
  border: 1px solid hsl(var(--border-color));
  border-radius: 12px;
  padding: 1.15rem 1.5rem;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.wizard-option-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--card-accent, var(--accent-neon-blue));
  transition: var(--transition-smooth);
}

.wizard-option-btn.pc-laptop-help { --card-accent: #f97316; }
.wizard-option-btn.printers { --card-accent: #06b6d4; }
.wizard-option-btn.mobile-phone-fix { --card-accent: #ec4899; }
.wizard-option-btn.wifi-routers { --card-accent: #f59e0b; }
.wizard-option-btn.smart-home { --card-accent: #14b8a6; }
.wizard-option-btn.appliance-errors { --card-accent: #22c55e; }
.wizard-option-btn.smart-tvs { --card-accent: #8b5cf6; }
.wizard-option-btn.device-pairing { --card-accent: #3b82f6; }

.wizard-option-btn:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--card-accent, #3b82f6) 30%, hsl(var(--border-color)));
  box-shadow: 0 6px 15px rgba(15, 23, 42, 0.03);
}

.wizard-option-btn:hover::before {
  width: 6px;
}

.wizard-option-btn .chevron {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  transition: transform 0.2s ease, color 0.2s ease;
  margin-left: 1rem;
}

.wizard-option-btn:hover .chevron {
  transform: translateX(3px);
  color: var(--card-accent, var(--text-primary));
}

@media (max-width: 650px) {
  .wizard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  .wizard-actions {
    align-self: flex-end;
  }
  .wizard-options-grid {
    grid-template-columns: 1fr;
  }
  .guided-troubleshooter-card {
    padding: 1.25rem;
  }
}

/* Dynamic Content Pages (About, Privacy, Cookies, Terms) */
.dynamic-content-page {
  padding: 3rem;
  max-width: 850px;
  margin: 0 auto 3rem auto;
}

.dynamic-content-page h1 {
  font-size: 2.5rem;
  font-family: var(--font-mono);
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.dynamic-content-page .page-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
  font-family: var(--font-mono);
}

.content-section-stack {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.content-section-stack section h2 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  border-bottom: 1.5px solid hsl(var(--border-color));
  padding-bottom: 0.5rem;
}

.content-section-stack section p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.content-section-stack section p:last-child {
  margin-bottom: 0;
}

.content-section-stack section a {
  color: var(--accent-neon-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: var(--transition-smooth);
}

.content-section-stack section a:hover {
  border-bottom-color: var(--accent-neon-blue);
}

.content-section-stack section ul,
.content-section-stack section ol {
  margin-left: 1.5rem;
  margin-top: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
}

.content-section-stack section li {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .dynamic-content-page {
    padding: 1.5rem;
  }
  .dynamic-content-page h1 {
    font-size: 2rem;
  }
}