/* ===========================================
   QRCODESTACK HOMEPAGE STYLES
   Modern, clean white theme
   =========================================== */

:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --bg-white: #ffffff;
  --bg-light: #f8fafc;
  --bg-gray: #f1f5f9;
  --border-color: #e2e8f0;
  --success-color: #10b981;
  --error-color: #ef4444;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Navigation */
.navbar {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  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;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 20px;
}

.logo img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Buttons */
.btn-primary {
  background: var(--primary-color);
  color: white;
  padding: 10px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--bg-white);
  color: var(--primary-color);
  padding: 10px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
  transition: all 0.2s;
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--bg-light);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  padding: 10px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  display: inline-block;
  transition: all 0.2s;
  border: 2px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--primary-color);
  background: var(--bg-light);
}

.btn-large {
  padding: 14px 32px;
  font-size: 16px;
}

.btn-full {
  width: 100%;
  text-align: center;
}

/* Hero Section */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-light) 100%);
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-header p {
  font-size: 18px;
  color: var(--text-secondary);
}

/* Products Section */
.products {
  padding: 100px 0;
  background: var(--bg-white);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.product-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s;
  position: relative;
}

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

.product-card.featured {
  border-color: var(--primary-color);
  border-width: 2px;
}

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--primary-color);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.product-icon {
  width: 64px;
  height: 64px;
  background: var(--bg-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--primary-color);
}

.product-icon svg {
  width: 32px;
  height: 32px;
}

.product-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.product-description {
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.product-features {
  list-style: none;
  margin-bottom: 24px;
}

.product-features li {
  padding: 8px 0;
  color: var(--text-secondary);
  font-size: 14px;
}

.coming-soon {
  background: var(--bg-gray);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 8px;
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  margin-top: 16px;
}

/* Pricing Section */
.pricing {
  padding: 100px 0;
  background: var(--bg-light);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  margin-bottom: 48px;
}

.pricing-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px 32px;
  transition: all 0.3s;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
  border-color: var(--primary-color);
  border-width: 2px;
  transform: scale(1.05);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-color);
  color: white;
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  margin-bottom: 32px;
}

.pricing-header h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.currency {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-secondary);
}

.amount {
  font-size: 48px;
  font-weight: 800;
  color: var(--text-primary);
}

.period {
  font-size: 18px;
  color: var(--text-secondary);
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-features li {
  padding: 12px 0;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-note {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}

/* Contact Section */
.contact {
  padding: 100px 0;
  background: var(--bg-white);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info h2 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.contact-info > p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
}

.contact-features {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-feature {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-feature svg {
  width: 24px;
  height: 24px;
  color: var(--primary-color);
}

.contact-feature span {
  font-weight: 600;
  color: var(--text-primary);
}

/* Form */
.signup-form {
  background: var(--bg-light);
  padding: 40px;
  border-radius: 16px;
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  font-family: inherit;
  background: var(--bg-white);
  color: var(--text-primary);
  transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-message {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  display: none;
}

.form-message.success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #10b981;
  display: block;
}

.form-message.error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #ef4444;
  display: block;
}

/* Footer */
.footer {
  background: var(--bg-light);
  border-top: 1px solid var(--border-color);
  padding: 64px 0 32px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-weight: 700;
  font-size: 18px;
}

.footer-logo img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.footer-section p {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-section h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 8px;
}

.footer-section ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 36px;
  }
  
  .hero-subtitle {
    font-size: 18px;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .hero-cta a {
    width: 100%;
  }
  
  .section-header h2 {
    font-size: 32px;
  }
  
  .products-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.featured {
    transform: scale(1);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .nav-links {
    gap: 16px;
  }
  
  .nav-links a:not(.btn-primary) {
    display: none;
  }
}