/**
 * SnapCalorie Homepage & Learn Section Shared Styles
 * 
 * This stylesheet contains common styles for:
 * - Navigation header
 * - Footer
 * - Buttons
 * - Layout containers
 * - Responsive behavior
 */

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.navbar {
  background: white;
  border-bottom: 1px solid #e5e5e5;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}

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

.logo-img {
  height: 40px;
  width: auto;
  margin: 0px;
  padding: 0px;
  padding-right: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  color: #666;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: #FF6B47;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: #1a1a1a;
  transition: all 0.3s;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  background: white;
  border-bottom: 1px solid #e5e5e5;
}

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

.mobile-nav-link {
  color: #666;
  text-decoration: none;
  font-weight: 500;
  padding: 12px 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 16px;
}

.btn-primary {
  background: linear-gradient(135deg, #FF6B47 0%, #FF4520 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 71, 0.3);
}

.btn-outline {
  background: transparent;
  color: #FF6B47;
  border-color: #FF6B47;
}

.btn-outline:hover {
  background: #FF6B47;
  color: white;
}

.btn-cta {
  background: white;
  color: #FF6B47;
  font-weight: 700;
}

.btn-cta:hover {
  background: #f8f9fa;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.btn-large {
  padding: 16px 36px;
  font-size: 18px;
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  background: linear-gradient(180deg, #fff 0%, #f8f9fa 100%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  color: #1a1a1a;
}

.gradient-text {
  background: linear-gradient(135deg, #FF6B47 0%, #FF4520 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: #666;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

/* Section Styles */
.section-title {
  text-align: center;
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
  color: #1a1a1a;
}

.section-subtitle {
  text-align: center;
  font-size: 18px;
  color: #666;
  margin-bottom: 60px;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

.feature-card {
  text-align: center;
  padding: 32px;
  background: #f8f9fa;
  border-radius: 16px;
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.feature-icon img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 50%;
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #1a1a1a;
}

.feature-description {
  font-size: 16px;
  color: #666;
  line-height: 1.6;
}

/* Final CTA */
.final-cta {
  padding: 80px 0;
  background: linear-gradient(135deg, #FF6B47 0%, #FF4520 100%);
  color: white;
}

.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: 42px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 20px;
  margin-bottom: 32px;
  opacity: 0.95;
}

.cta-note {
  margin-top: 16px;
  font-size: 14px;
  opacity: 0.9;
}

/* Footer */
.footer {
  background: #1a1a1a;
  color: white;
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section {
  display: flex;
  flex-direction: column;
}

.footer-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: white;
}

.footer-description {
  font-size: 14px;
  color: #999;
  line-height: 1.6;
}

.footer-link {
  display: block;
  color: #999;
  text-decoration: none;
  margin-bottom: 8px;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-link:hover {
  color: #FF6B47;
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid #333;
  color: #999;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-title {
    font-size: 40px;
  }
  
  .hero-subtitle {
    font-size: 18px;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .btn-large {
    width: 100%;
    text-align: center;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 32px;
  }
  
  .cta-title {
    font-size: 32px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }
}