/* GridHealth.tech - Liquid Glass Design System */

:root {
  /* Color Palette */
  --primary: #3b82f6;
  --primary-light: #60a5fa;
  --primary-dark: #2563eb;
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  /* Glass Effects */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: #ffffff;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated Background Elements */
body::before,
body::after {
  content: '';
  position: fixed;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
  z-index: 0;
}

body::before {
  background: radial-gradient(circle, #3b82f6 0%, transparent 70%);
  top: -200px;
  left: -200px;
  animation-delay: 0s;
}

body::after {
  background: radial-gradient(circle, #06b6d4 0%, transparent 70%);
  bottom: -200px;
  right: -200px;
  animation-delay: 10s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(100px, -100px); }
  66% { transform: translate(-50px, 100px); }
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo:hover {
  transform: translateY(-2px);
  text-shadow: 0 4px 12px rgba(59, 130, 246, 0.5);
}

.logo-icon {
  font-size: 1.8rem;
}

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

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.1);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: white;
  border-radius: 2rem;
  transition: all 0.3s;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  position: relative;
  z-index: 1;
}

/* Glass Card */
.glass-card {
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2rem;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  padding: var(--spacing-xl);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px 0 rgba(31, 38, 135, 0.25);
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

.hero-content {
  text-align: center;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, #ffffff 0%, #e0f2fe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.hero .subtitle {
  font-size: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
  font-weight: 300;
}

.hero .tagline {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  border-radius: 2rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: rgba(59, 130, 246, 0.9);
  color: white;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  background: rgba(59, 130, 246, 1);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.2);
}

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Section */
.section {
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: white;
}

.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Grid Layout */
.grid {
  display: grid;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Feature Card */
.feature-card {
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2rem;
  border: 1px solid var(--glass-border);
  padding: var(--spacing-xl);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 60px rgba(31, 38, 135, 0.3);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  display: inline-block;
  padding: 1rem;
  border-radius: 2rem;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: white;
}

.feature-card p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.stat-card {
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2rem;
  border: 1px solid var(--glass-border);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
  transform: scale(1.05);
  background: rgba(255, 255, 255, 0.12);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-light);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
}

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

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 1rem 1.5rem;
  border-radius: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  color: white;
  font-size: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-light);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-control::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

textarea.form-control {
  resize: vertical;
  min-height: 150px;
  border-radius: 1.5rem;
}

/* Footer */
footer {
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(20px);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-section h3 {
  margin-bottom: var(--spacing-md);
  color: white;
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  display: block;
  margin-bottom: var(--spacing-xs);
  transition: color 0.3s;
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-lg);
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .nav-links.active {
    transform: translateX(0);
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero .subtitle {
    font-size: 1.2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .btn-group {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* Badge */
.badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-primary {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.3);
}