/* Design System - Inspired by MetaCtrl */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Colors */
  --primary-green: #00C853;
  --primary-green-dark: #00A843;
  --background-light: #FFFFFF;
  --background-gray: #F8F9FA;
  --text-primary: #212121;
  --text-secondary: #666666;
  --text-light: #999999;
  --border-color: #E0E0E0;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--background-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

a {
  color: var(--primary-green);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-green-dark);
}

/* Container */
.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  box-sizing: border-box;
}

/* Header Navigation */
header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

header.scrolled {
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
}

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

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--primary-green);
}

/* Hide mobile menu toggle on desktop */
.menu-toggle {
  display: none;
}

/* Hero Section */
.hero {
  padding: var(--spacing-xxl) 0;
  text-align: center;
  background: linear-gradient(180deg, var(--background-light) 0%, var(--background-gray) 100%);
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
  color: white;
  box-shadow: 0 4px 12px rgba(0, 200, 83, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 200, 83, 0.4);
  color: white;
}

.btn-secondary {
  background: white;
  color: var(--primary-green);
  border: 2px solid var(--primary-green);
}

.btn-secondary:hover {
  background: var(--primary-green);
  color: white;
  transform: translateY(-2px);
}

/* Features Section */
.features {
  padding: var(--spacing-xxl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.feature-card {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-green), var(--primary-green-dark));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-green);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(0, 200, 83, 0.1), rgba(0, 200, 83, 0.2));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--primary-green);
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Content Section (Privacy/Terms) */
.content-section {
  padding: var(--spacing-xl) 0 var(--spacing-xxl);
}

.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.content-wrapper h1 {
  border-bottom: 3px solid var(--primary-green);
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.content-wrapper h2 {
  margin-top: var(--spacing-xl);
  color: var(--text-primary);
}

.content-wrapper h3 {
  margin-top: var(--spacing-lg);
  color: var(--primary-green);
}

.content-wrapper ul, .content-wrapper ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.content-wrapper li {
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}

.content-wrapper a {
  font-weight: 500;
  text-decoration: underline;
}

.last-updated {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  color: var(--text-light);
  font-size: var(--font-size-sm);
  font-style: italic;
}

/* Footer */
footer {
  background: var(--text-primary);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-xxl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: white;
}

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

.footer-email {
  color: rgba(255, 255, 255, 0.8);
}

.footer-email:hover {
  color: var(--primary-green);
}

/* Responsive Design */
@media (max-width: 992px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --font-size-xl: 1.25rem;
    --spacing-xxl: 2.5rem;
    --spacing-xl: 2rem;
  }

  /* Mobile container with better padding */
  .container {
    padding: 0 var(--spacing-md);
  }

  nav {
    padding: var(--spacing-sm) 0;
  }

  /* Hamburger Menu Toggle */
  .menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
    width: 30px;
    height: 24px;
    justify-content: center;
    /* Ensure adequate touch target size */
    padding: 10px;
    margin: -10px;
  }

  .menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

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

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: white;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    transition: right 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    z-index: 1000;
    padding: var(--spacing-xl);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: var(--font-size-lg);
    font-weight: 600;
    /* Better touch targets - minimum 44px */
    padding: var(--spacing-sm) var(--spacing-md);
    display: block;
    width: 100%;
    text-align: center;
  }

  /* Hero Section */
  .hero {
    padding: var(--spacing-xxl) 0;
  }

  .hero h1 {
    font-size: 2rem;
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
    padding: 0 var(--spacing-xs);
  }

  /* Better button sizing for mobile */
  .btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    min-height: 44px; /* Minimum touch target */
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  /* Features */
  .features {
    padding: var(--spacing-xl) 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .feature-card {
    padding: var(--spacing-lg);
  }

  .feature-card h3 {
    font-size: var(--font-size-lg);
  }

  .feature-card p {
    font-size: var(--font-size-base);
    line-height: 1.6;
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-xl);
  }

  .footer-links {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .footer-links a {
    padding: var(--spacing-xs) 0;
    display: inline-block;
    min-height: 44px; /* Touch target */
    line-height: 44px;
  }

  /* Content (Privacy/Terms) */
  .content-wrapper {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
  }

  .content-wrapper h1 {
    font-size: var(--font-size-2xl);
  }

  .content-wrapper h2 {
    font-size: var(--font-size-xl);
  }

  .content-wrapper h3 {
    font-size: var(--font-size-lg);
  }

  .content-wrapper p,
  .content-wrapper li {
    font-size: var(--font-size-base);
    line-height: 1.7;
  }

  .content-section {
    padding: var(--spacing-md) 0;
  }

  /* Improve clickable areas for links in content */
  .content-wrapper a {
    padding: 2px 0;
    display: inline-block;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.375rem;
    --font-size-xl: 1.125rem;
    --spacing-lg: 1rem;
    --spacing-md: 0.875rem;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

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

  .hero h1 {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 0.9375rem;
  }

  .btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }

  .logo {
    font-size: 1.125rem;
  }

  .logo span {
    font-size: 1.1rem;
  }

  .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 0.875rem;
  }

  /* Adjust content wrapper for very small screens */
  .content-wrapper {
    padding: var(--spacing-sm);
  }

  .content-wrapper h1 {
    font-size: var(--font-size-xl);
  }

  .content-wrapper ul,
  .content-wrapper ol {
    margin-left: var(--spacing-md);
  }
}

/* Mobile menu overlay backdrop */
@media (max-width: 768px) {
  /* Overlay to dim background when menu is open */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 999;
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  /* Prevent body scroll when menu is open */
  body.menu-open {
    overflow: hidden;
  }
}

/* Smooth Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}