/* Modern, SEO-optimized CSS with responsive design */
:root {
  --primary: #6366F1;
  --secondary: #EC4899;
  --accent: #8B5CF6;
  --text: #1F2937;
  --text-light: #6B7280;
  --background: #FFFFFF;
  --background-alt: #F9FAFB;
  --border: #E5E7EB;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  background-color: var(--background);
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--text);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  text-align: center;
  margin-bottom: 2rem;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--secondary);
}

ul {
  list-style: none;
}

section {
  padding: 5rem 0;
}

section:nth-child(even) {
  background-color: var(--background-alt);
}

/* Header Styles */
.header {
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 100;
  box-shadow: var(--shadow);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text);
}

.logo .accent {
  color: var(--primary);
}

.logo-svg {
  height: 2.5rem;
  width: auto;
}

.main-nav ul {
  display: flex;
  gap: 2rem;
}

.main-nav a {
  font-weight: 500;
  color: var(--text);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: var(--transition);
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px;
  background-color: var(--text);
  border-radius: 3px;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
  z-index: -1;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  max-width: 550px;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: var(--radius);
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(236, 72, 153, 0.3);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(236, 72, 153, 0.4);
  color: white;
}

.arrow-icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero-svg {
  width: 100%;
  height: auto;
  max-height: 400px;
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature-card {
  background-color: var(--background);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  width: 50px;
  height: 50px;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

/* How It Works Section */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.step {
  text-align: center;
  padding: 2rem;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  font-size: 1.75rem;
  font-weight: 700;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
}

.cta-center {
  text-align: center;
}

/* Privacy Section */
.privacy-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.privacy-text ul {
  margin-top: 1rem;
}

.privacy-text li {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
}

.privacy-text li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background-color: var(--primary);
  color: white;
  border-radius: 50%;
  margin-right: 0.75rem;
  font-size: 0.875rem;
}

.privacy-svg {
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  display: block;
}

/* FAQ Section */
.accordion {
  max-width: 800px;
  margin: 0 auto;
}

.accordion-item {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.accordion-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.25rem;
  background-color: var(--background);
  border: none;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.accordion-button:hover {
  background-color: rgba(99, 102, 241, 0.05);
}

.accordion-icon {
  width: 16px;
  height: 16px;
  transition: var(--transition);
  color: var(--primary);
}

.accordion-button.active .accordion-icon path:nth-child(2) {
  display: none;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  padding: 0 1.25rem;
  transition: max-height 0.3s ease;
}

.accordion-button.active + .accordion-content {
  max-height: 200px;
  padding-bottom: 1.25rem;
}

/* Footer */
.footer {
  background-color: #1F2937;
  color: white;
  padding-top: 4rem;
}

.footer .container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-logo {
  margin-bottom: 1rem;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
}

.footer-column h4 {
  color: white;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.footer-column ul li {
  margin-bottom: 0.75rem;
}

.footer-column a {
  color: #E5E7EB;
  transition: var(--transition);
}

.footer-column a:hover {
  color: var(--secondary);
}

.footer-bottom {
  margin-top: 3rem;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.875rem;
  color: #9CA3AF;
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content {
    margin: 0 auto;
  }
  
  .privacy-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .privacy-text ul {
    display: inline-block;
    text-align: left;
  }
  
  .privacy-svg {
    margin-top: 2rem;
  }
}

@media (max-width: 768px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--background);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: 0.5s ease;
    opacity: 0;
    visibility: hidden;
  }
  
  .main-nav.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    opacity: 1;
    visibility: visible;
  }
  
  .main-nav ul {
    flex-direction: column;
    gap: 1rem;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .footer .container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-brand {
    align-items: center;
    text-align: center;
  }
  
  .feature-card, .step {
    padding: 1.5rem;
  }
}

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

.hero, .features, .how-it-works, .privacy, .faq {
  animation: fadeIn 1s ease forwards;
}