/* AquaNest Canada - Ripple Grid Design System */

/* CSS Variables for Theme */
:root {
  /* Color Palette */
  --deep-navy: #0B1220;
  --aqua: #28C7DB;
  --teal: #20C6B7;
  --slate: #6B7280;
  --soft-gray: #A7B0BD;
  
  /* Typography Scale */
  --font-system: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --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: 2.25rem;
  --font-size-4xl: 3.1rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Breakpoints */
  --max-width: 1200px;
  --gutter: 20px;
  --border-radius: 16px;
  --shadow: 0 12px 28px rgba(0,0,0,0.24);
  
  /* Transitions */
  --transition-fast: 160ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 220ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-system);
  background: var(--deep-navy);
  color: white;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Ripple Grid Background */
.ripple-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(135deg, var(--deep-navy) 0%, #1a2f4a 100%);
  background-attachment: fixed;
}

.ripple-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 25% 25%, var(--aqua) 1px, transparent 1px),
    radial-gradient(circle at 75% 75%, var(--teal) 1px, transparent 1px);
  background-size: 60px 60px, 40px 40px;
  background-position: 0 0, 30px 30px;
  opacity: 0.1;
  animation: ripplePulse 8s ease-in-out infinite;
}

@keyframes ripplePulse {
  0%, 100% { opacity: 0.1; }
  50% { opacity: 0.2; }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); letter-spacing: -0.02em; }
h2 { font-size: var(--font-size-3xl); letter-spacing: -0.01em; }
h3 { font-size: var(--font-size-2xl); }

p {
  margin-bottom: var(--space-4);
  color: var(--soft-gray);
}

/* Container & Grid */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.grid {
  display: grid;
  gap: var(--gutter);
}

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 18, 32, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(40, 199, 219, 0.2);
  transition: all var(--transition-normal);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--aqua);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: var(--space-8);
}

.nav-link {
  color: white;
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border-radius: 8px;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--aqua);
  background: rgba(40, 199, 219, 0.1);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--aqua);
  border-radius: 1px;
}

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

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(11, 18, 32, 0.98);
  backdrop-filter: blur(10px);
  padding: var(--space-6);
  border-top: 1px solid rgba(40, 199, 219, 0.2);
}

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

.mobile-nav-link {
  display: block;
  color: white;
  text-decoration: none;
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--aqua);
}

/* Main Content */
.main {
  padding-top: 80px;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(rgba(11, 18, 32, 0.7), rgba(11, 18, 32, 0.7)),
              url('../assets/images/abstract_water_droplet_ripple_colorful_background.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-4);
}

.hero h1 {
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--aqua), var(--teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-8);
  color: var(--soft-gray);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  background: linear-gradient(135deg, var(--aqua), var(--teal));
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(40, 199, 219, 0.3);
}

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

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

/* Cards */
.card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition-normal);
  border: 1px solid rgba(40, 199, 219, 0.1);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(0,0,0,0.3);
  border-color: var(--aqua);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: var(--space-6);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
  color: white;
}

.card-text {
  color: var(--soft-gray);
  margin-bottom: var(--space-4);
}

.card-meta {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: rgba(40, 199, 219, 0.2);
  color: var(--aqua);
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Stats Section */
.stats {
  background: rgba(255, 255, 255, 0.02);
  padding: var(--space-20) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
}

.stat {
  text-align: center;
  padding: var(--space-8);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  border: 1px solid rgba(40, 199, 219, 0.1);
  transition: all var(--transition-normal);
}

.stat:hover {
  transform: translateY(-5px);
  border-color: var(--aqua);
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--aqua);
  display: block;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--font-size-base);
  color: var(--soft-gray);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Section Styling */
.section {
  padding: var(--space-20) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-title {
  color: var(--aqua);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--soft-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* Advantages Grid */
.advantages {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
}

.advantage {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-6);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  border: 1px solid rgba(40, 199, 219, 0.1);
  transition: all var(--transition-normal);
}

.advantage:hover {
  transform: translateY(-2px);
  border-color: var(--aqua);
}

.advantage-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--aqua), var(--teal));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.advantage-icon svg {
  width: 24px;
  height: 24px;
  fill: white;
}

.advantage-content h3 {
  color: white;
  margin-bottom: var(--space-2);
}

.advantage-content p {
  color: var(--soft-gray);
}

/* Category Navigation */
.categories-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.category-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  text-decoration: none;
  color: white;
  border: 1px solid rgba(40, 199, 219, 0.1);
  transition: all var(--transition-normal);
}

.category-link:hover {
  background: rgba(40, 199, 219, 0.1);
  border-color: var(--aqua);
  transform: translateY(-2px);
}

.category-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--aqua), var(--teal));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-icon svg {
  width: 20px;
  height: 20px;
  fill: white;
}

/* Newsletter */
.newsletter {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--space-12);
  border-radius: var(--border-radius);
  text-align: center;
  border: 1px solid rgba(40, 199, 219, 0.2);
}

.newsletter-form {
  display: flex;
  gap: var(--space-4);
  max-width: 500px;
  margin: var(--space-8) auto 0;
}

.newsletter-input {
  flex: 1;
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius);
  color: white;
  font-size: var(--font-size-base);
}

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

.newsletter-input:focus {
  outline: none;
  border-color: var(--aqua);
  background: rgba(255, 255, 255, 0.15);
}

/* Reviews */
.reviews {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-6);
}

.review {
  padding: var(--space-6);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius);
  border: 1px solid rgba(40, 199, 219, 0.1);
  position: relative;
}

.review::before {
  content: '"';
  font-size: var(--font-size-4xl);
  color: var(--aqua);
  position: absolute;
  top: var(--space-4);
  left: var(--space-6);
  font-family: serif;
}

.review-content {
  color: var(--soft-gray);
  margin-bottom: var(--space-6);
  padding-left: var(--space-6);
}

.review-author {
  font-weight: 600;
  color: white;
}

.review-location {
  color: var(--slate);
  font-size: var(--font-size-sm);
}

/* Footer */
.footer {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid rgba(40, 199, 219, 0.2);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-section h3 {
  color: var(--aqua);
  margin-bottom: var(--space-4);
}

.footer-section p,
.footer-section a {
  color: var(--soft-gray);
  text-decoration: none;
  margin-bottom: var(--space-2);
  display: block;
}

.footer-section a:hover {
  color: var(--aqua);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--slate);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--aqua), var(--teal));
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1000;
  box-shadow: var(--shadow);
}

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

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(40, 199, 219, 0.3);
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-slow);
}

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

/* Page Header */
.page-header {
  background: linear-gradient(rgba(11, 18, 32, 0.8), rgba(11, 18, 32, 0.8)),
              url('../assets/images/abstract_water_droplet_ripple_background_teal.jpg');
  background-size: cover;
  background-position: center;
  padding: calc(80px + var(--space-20)) 0 var(--space-16);
  text-align: center;
}

.page-title {
  color: var(--aqua);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

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

/* Category Header */
.category-header {
  background: linear-gradient(135deg, var(--deep-navy), #1a2f4a);
  padding: calc(80px + var(--space-12)) 0 var(--space-8);
  text-align: center;
}

.category-title {
  color: var(--aqua);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.category-intro {
  font-size: var(--font-size-lg);
  color: var(--soft-gray);
  max-width: 800px;
  margin: 0 auto var(--space-8);
}

/* Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-6);
}

.article-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.article-card .card-image {
  height: 250px;
}

.article-card .card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card .card-text {
  flex: 1;
}

.article-link {
  color: var(--aqua);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.article-link:hover {
  color: var(--teal);
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --gutter: 16px;
  }
  
  .nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .hero-content {
    padding: var(--space-4);
  }
  
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .advantages {
    grid-template-columns: 1fr;
  }
  
  .categories-nav {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .reviews {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .stat {
    padding: var(--space-4);
  }
  
  .hero {
    min-height: 70vh;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* Loading Animation */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--deep-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity var(--transition-slow);
}

.preloader.hidden {
  opacity: 0;
  pointer-events: none;
}

.ripple-spinner {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(40, 199, 219, 0.3);
  border-top: 3px solid var(--aqua);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}