/* SmartPantry Pro — Main Stylesheet */
:root {
  --primary: #4CAF50;
  --primary-dark: #388E3C;
  --secondary: #2196F3;
  --accent: #FF9800;
  --bg: #FAFAFA;
  --surface: #FFFFFF;
  --text: #212121;
  --text-secondary: #757575;
  --border: #E0E0E0;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Navbar */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-dark);
  text-decoration: none;
}
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }

/* Buttons */
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.2s, transform 0.1s;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  padding: 10px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.2s;
}
.btn-secondary:hover { background: rgba(76,175,80,0.08); }
.btn-sm { padding: 8px 18px; font-size: 0.9rem; }
.btn-lg { padding: 16px 36px; font-size: 1.1rem; }
.btn-block { display: block; width: 100%; text-align: center; }

/* Hero */
.hero {
  background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 50%, #A5D6A7 100%);
  padding: 80px 24px;
  text-align: center;
}
.hero-content { max-width: 800px; margin: 0 auto; }
.hero h1 { font-size: 3rem; font-weight: 800; margin-bottom: 16px; color: #1B5E20; }
.hero-subtitle { font-size: 1.25rem; color: #2E7D32; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 16px; justify-content: center; margin-bottom: 48px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 48px; justify-content: center; flex-wrap: wrap; }
.stat { text-align: center; }
.stat-number { display: block; font-size: 2rem; font-weight: 700; color: var(--primary-dark); }

/* Sections */
section { padding: 80px 24px; }
section h2 { text-align: center; font-size: 2rem; margin-bottom: 48px; }

/* Features Grid */
.features-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}
.feature-card {
  background: var(--surface);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.2s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-icon { font-size: 2.5rem; margin-bottom: 16px; }
.feature-card h3 { margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); }

/* Pricing Preview */
.pricing-preview { background: var(--surface); }
.pricing-cards {
  max-width: 1000px;
  margin: 0 auto 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.pricing-card {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
  position: relative;
}
.pricing-card:hover { transform: translateY(-4px); }
.pricing-card.featured { border-color: var(--primary); box-shadow: var(--shadow-lg); }
.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  padding: 4px 20px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}
.pricing-card h3 { font-size: 1.3rem; margin-bottom: 8px; }
.price { font-size: 2.5rem; font-weight: 800; color: var(--primary-dark); margin: 16px 0; }
.price span { font-size: 1rem; color: var(--text-secondary); font-weight: 400; }
.pricing-card ul { list-style: none; margin: 24px 0; text-align: left; }
.pricing-card ul li { padding: 6px 0; }
.pricing-card ul li::before { content: '✓ '; color: var(--primary); font-weight: 700; }
.center-cta { text-align: center; margin-top: 32px; }

/* Testimonials */
.testimonials { background: var(--bg); }
.testimonial-cards {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.testimonial {
  background: var(--surface);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-style: italic;
}
.testimonial-author { margin-top: 16px; font-style: normal; font-weight: 600; color: var(--text-secondary); }

/* Newsletter */
.newsletter { text-align: center; background: var(--surface); }
.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 24px auto 0;
}
.newsletter-form input {
  flex: 1;
  padding: 14px 20px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.newsletter-form input:focus { border-color: var(--primary); }
.newsletter-message { margin-top: 16px; font-weight: 500; }

/* Footer */
.footer { background: #1B5E20; color: #fff; padding: 48px 24px 24px; }
.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 32px;
}
.footer-col h4 { margin-bottom: 16px; }
.footer-col a, .footer-col p { display: block; color: rgba(255,255,255,0.7); text-decoration: none; margin-bottom: 8px; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { text-align: center; margin-top: 32px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.2); }

/* Checkout Page */
.checkout-container {
  max-width: 600px;
  margin: 40px auto;
  background: var(--surface);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.checkout-container h1 { margin-bottom: 8px; }
.checkout-container h2 { text-align: left; margin: 24px 0 16px; font-size: 1.2rem; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 6px; }
.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus { border-color: var(--primary); }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.order-summary { background: var(--bg); padding: 20px; border-radius: var(--radius-sm); margin: 24px 0; }
.order-summary .line-item { display: flex; justify-content: space-between; margin-bottom: 8px; }
.order-summary .total { border-top: 2px solid var(--border); padding-top: 12px; font-weight: 700; font-size: 1.2rem; }

/* Features Page */
.features-page { max-width: 1200px; margin: 0 auto; }
.feature-section { display: flex; gap: 48px; align-items: center; margin-bottom: 80px; flex-wrap: wrap; }
.feature-section.reverse { flex-direction: row-reverse; }
.feature-section .content { flex: 1; min-width: 300px; }
.feature-section .visual { flex: 1; min-width: 300px; background: var(--bg); border-radius: var(--radius); padding: 48px; text-align: center; font-size: 5rem; }
.feature-section h3 { font-size: 1.8rem; margin-bottom: 16px; }

/* Success Page */
.success-container {
  max-width: 500px;
  margin: 80px auto;
  text-align: center;
  background: var(--surface);
  padding: 48px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.success-icon { font-size: 4rem; margin-bottom: 16px; }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero-stats { gap: 24px; }
  section { padding: 48px 16px; }
  section h2 { font-size: 1.5rem; }
  .form-row { flex-direction: column; }
}