/* FixIt Labs Canada - Circuit Grid Design System */

/* CSS Variables - Color Palette & Typography */
:root {
  /* Color Palette */
  --deep-navy: #0B1220;
  --signal-blue: #3AA7FF;
  --teal: #20C6B7;
  --graphite: #1A2230;
  --soft-gray: #A7B0BD;
  --white: #FFFFFF;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--signal-blue), var(--teal));
  --gradient-dark: linear-gradient(135deg, var(--deep-navy), var(--graphite));
  --gradient-hero: linear-gradient(rgba(11, 18, 32, 0.8), rgba(26, 34, 48, 0.9));
  
  /* Typography Scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3.0625rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  --shadow-circuit: 0 12px 28px rgba(0, 0, 0, 0.28);
  
  /* Transitions */
  --transition-fast: 160ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--soft-gray);
  background-color: var(--deep-navy);
  overflow-x: hidden;
}

/* Circuit Grid Background Animation */
.circuit-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.03;
  background-image: 
    linear-gradient(rgba(58, 167, 255, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(58, 167, 255, 0.3) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridPulse 4s ease-in-out infinite;
}

.circuit-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 30%, rgba(58, 167, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(32, 198, 183, 0.1) 0%, transparent 50%);
  animation: circuitFlow 6s ease-in-out infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.03; }
  50% { opacity: 0.08; }
}

@keyframes circuitFlow {
  0%, 100% { transform: translateX(0) translateY(0); }
  25% { transform: translateX(-10px) translateY(5px); }
  50% { transform: translateX(0) translateY(0); }
  75% { transform: translateX(10px) translateY(-5px); }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

h1 {
  font-size: var(--font-size-5xl);
  margin-bottom: var(--spacing-xl);
}

h2 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--soft-gray);
}

/* Links */
a {
  color: var(--signal-blue);
  text-decoration: none;
  transition: color var(--transition-normal);
  position: relative;
}

a:hover {
  color: var(--teal);
  animation: linkPulse 0.6s ease;
}

@keyframes linkPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* Layout Components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* Header Styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(11, 18, 32, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(58, 167, 255, 0.2);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.header.scrolled {
  background: rgba(11, 18, 32, 0.98);
  border-bottom: 1px solid rgba(58, 167, 255, 0.3);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

.logo-accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

.nav-links a {
  color: var(--soft-gray);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.nav-links a:hover {
  color: var(--white);
  background: rgba(58, 167, 255, 0.1);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: var(--font-size-xl);
  cursor: pointer;
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: rgba(11, 18, 32, 0.98);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(58, 167, 255, 0.2);
}

.mobile-menu.active {
  display: block;
}

.mobile-menu ul {
  list-style: none;
  padding: var(--spacing-lg);
}

.mobile-menu li {
  margin-bottom: var(--spacing-md);
}

.mobile-menu a {
  display: block;
  color: var(--soft-gray);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.mobile-menu a:hover {
  color: var(--white);
  background: rgba(58, 167, 255, 0.1);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-hero);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
  color: var(--soft-gray);
  animation: fadeInUp 1s ease 0.2s both;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  animation: fadeInUp 1s ease 0.4s both;
}

.stat-card {
  background: rgba(26, 34, 48, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(58, 167, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: rgba(58, 167, 255, 0.4);
  box-shadow: var(--shadow-circuit);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--signal-blue);
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--soft-gray);
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  animation: buttonPulse 0.6s ease;
}

@keyframes buttonPulse {
  0% { transform: translateY(-2px) scale(1); }
  50% { transform: translateY(-2px) scale(1.05); }
  100% { transform: translateY(-2px) scale(1); }
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--signal-blue);
  color: var(--signal-blue);
}

.btn-secondary:hover {
  background: var(--signal-blue);
  color: var(--white);
}

/* Card Styles */
.card {
  background: rgba(26, 34, 48, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(58, 167, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(58, 167, 255, 0.4);
  box-shadow: var(--shadow-circuit);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

.card-description {
  color: var(--soft-gray);
  margin-bottom: var(--spacing-lg);
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  color: var(--soft-gray);
}

.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(58, 167, 255, 0.2);
  color: var(--signal-blue);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Featured Articles */
.featured-articles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

/* Popular Articles */
.popular-articles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.article-card {
  background: rgba(26, 34, 48, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(58, 167, 255, 0.1);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
  position: relative;
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: rgba(58, 167, 255, 0.3);
  box-shadow: var(--shadow-circuit);
}

.article-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.article-content {
  padding: var(--spacing-lg);
}

.article-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--white);
}

.article-excerpt {
  color: var(--soft-gray);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--soft-gray);
}

/* Category Pages */
.category-hero {
  background: var(--gradient-dark);
  padding: var(--spacing-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.category-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 30% 40%, rgba(58, 167, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(32, 198, 183, 0.1) 0%, transparent 50%);
  z-index: 1;
}

.category-content {
  position: relative;
  z-index: 2;
}

.category-description {
  font-size: var(--font-size-lg);
  color: var(--soft-gray);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

/* Filter Chips */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-2xl);
}

.filter-chip {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: rgba(26, 34, 48, 0.6);
  border: 1px solid rgba(58, 167, 255, 0.3);
  border-radius: var(--radius-lg);
  color: var(--soft-gray);
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.filter-chip:hover,
.filter-chip.active {
  background: var(--signal-blue);
  color: var(--white);
  border-color: var(--signal-blue);
}

/* Newsletter Section */
.newsletter {
  background: var(--gradient-dark);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.newsletter::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 50% 50%, rgba(58, 167, 255, 0.05) 0%, transparent 70%);
  z-index: 1;
}

.newsletter-content {
  position: relative;
  z-index: 2;
}

.newsletter-form {
  display: flex;
  max-width: 400px;
  margin: var(--spacing-xl) auto 0;
  gap: var(--spacing-md);
}

.newsletter-input {
  flex: 1;
  padding: var(--spacing-md);
  background: rgba(26, 34, 48, 0.8);
  border: 1px solid rgba(58, 167, 255, 0.3);
  border-radius: var(--radius-lg);
  color: var(--white);
  font-size: var(--font-size-base);
}

.newsletter-input::placeholder {
  color: var(--soft-gray);
}

.newsletter-input:focus {
  outline: none;
  border-color: var(--signal-blue);
  box-shadow: 0 0 0 3px rgba(58, 167, 255, 0.1);
}

/* Footer */
.footer {
  background: var(--graphite);
  border-top: 1px solid rgba(58, 167, 255, 0.2);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-lg);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--soft-gray);
  transition: color var(--transition-normal);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(58, 167, 255, 0.1);
  color: var(--soft-gray);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: var(--white);
  font-size: var(--font-size-lg);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .filter-chips {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 480px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }
  
  .card {
    padding: var(--spacing-lg);
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(58, 167, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--signal-blue);
  animation: spin 1s ease-in-out infinite;
}

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

/* Fade in animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.hidden { display: none; }
.visible { display: block; }

/* Icon Styles */
.icon {
  width: 24px;
  height: 24px;
  fill: currentColor;
  display: inline-block;
}

.icon-lg {
  width: 32px;
  height: 32px;
}

.icon-xl {
  width: 48px;
  height: 48px;
}

/* SVG Icons */
.screen-icon,
.battery-icon,
.data-icon,
.water-icon,
.camera-icon,
.wrench-icon {
  width: 48px;
  height: 48px;
  fill: var(--signal-blue);
  margin-bottom: var(--spacing-md);
}