/* Base */
:root {
  /* Color system */
  --color-primary-50: #ecfeff;
  --color-primary-100: #cffafe;
  --color-primary-200: #a5f3fc;
  --color-primary-300: #67e8f9;
  --color-primary-400: #22d3ee;
  --color-primary-500: #06b6d4;
  --color-primary-600: #0891b2;
  --color-primary-700: #0e7490;
  --color-primary-800: #155e75;
  --color-primary-900: #164e63;
  
  --color-secondary-500: #f97316;
  --color-secondary-600: #ea580c;
  
  --color-success-500: #10b981;
  --color-warning-500: #f59e0b;
  --color-error-500: #ef4444;
  
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Spacing */
  --spacing-1: 8px;
  --spacing-2: 16px;
  --spacing-3: 24px;
  --spacing-4: 32px;
  --spacing-5: 40px;
  --spacing-6: 48px;
  --spacing-7: 56px;
  --spacing-8: 64px;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Border radius */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.375rem;
  --border-radius-lg: 0.5rem;
  --border-radius-xl: 0.75rem;
  --border-radius-2xl: 1rem;
  --border-radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
  font-family: var(--font-family);
  line-height: 1.5;
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-2);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--spacing-2);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-gray-900);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-2);
}

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

a:hover {
  color: var(--color-primary-700);
}

.btn {
  display: inline-block;
  font-weight: 600;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--border-radius-md);
  transition: all 0.2s ease-in-out;
}

.btn-primary {
  background-color: var(--color-primary-600);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  color: white;
}

.btn-secondary {
  background-color: white;
  color: var(--color-primary-600);
  border-color: var(--color-primary-600);
}

.btn-secondary:hover {
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
  border-color: var(--color-primary-700);
}

.btn-sm {
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-lg);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.97);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo img {
  height: 40px;
}

.nav-menu {
  display: flex;
  list-style: none;
}

.nav-menu li {
  margin-left: var(--spacing-3);
}

.nav-menu a {
  color: var(--color-gray-700);
  font-weight: 500;
}

.nav-menu a:hover {
  color: var(--color-primary-600);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 100%;
  height: 3px;
  background-color: var(--color-gray-900);
  border-radius: 10px;
}

/* Hero Section */
.hero {
  padding: 140px 0 var(--spacing-6);
  background-color: var(--color-primary-50);
  position: relative;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-4);
}

.hero-text {
  flex: 1;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
}

.hero h1 {
  margin-bottom: var(--spacing-2);
  color: var(--color-gray-900);
}

.hero p {
  font-size: var(--font-size-lg);
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-3);
}

.highlight {
  color: var(--color-primary-700);
}

.hero-cta {
  margin-top: var(--spacing-4);
}

.guarantee {
  margin-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  display: flex;
  align-items: center;
}

.guarantee i {
  color: var(--color-success-500);
  margin-right: var(--spacing-1);
}

.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

/* Demo Card */
.demo-card {
  width: 100%;
  max-width: 500px;
  background-color: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-2);
  background-color: var(--color-gray-100);
}

.dots {
  display: flex;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: 6px;
}

.red {
  background-color: #ff5f56;
}

.yellow {
  background-color: #ffbd2e;
}

.green {
  background-color: #27c93f;
}

.demo-title {
  font-weight: 500;
  color: var(--color-gray-700);
}

.demo-video {
  width: 100%;
  position: relative;
  padding-top: 56.25%; /* 16:9 aspect ratio */
  background-color: var(--color-gray-800);
  overflow: hidden;
}

.video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-gray-800);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.play-button {
  width: 60px;
  height: 60px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease-in-out;
}

.play-button i {
  color: white;
  font-size: var(--font-size-xl);
}

.video-placeholder:hover .play-button {
  background-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.demo-footer {
  padding: var(--spacing-2);
  display: flex;
  justify-content: center;
  width: 400px;
}

/* Features Section */
.features {
  padding: var(--spacing-8) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-6);
}

.section-header h2 {
  margin-bottom: var(--spacing-2);
}

.section-header p {
  max-width: 700px;
  margin: 0 auto;
  color: var(--color-gray-600);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-6);
}

.feature-card {
  padding: var(--spacing-3);
  background-color: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 50px;
  height: 50px;
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
}

.feature-card h3 {
  margin-bottom: var(--spacing-1);
  font-size: var(--font-size-lg);
}

.feature-card p {
  color: var(--color-gray-600);
  font-size: var(--font-size-base);
  margin-bottom: 0;
}

/* Testimonial Card */
.testimonial-card {
  background-color: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-4);
  box-shadow: var(--shadow-md);
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.quote-mark {
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 4rem;
  line-height: 1;
  color: var(--color-primary-100);
  font-family: Georgia, serif;
}

.testimonial-text {
  font-size: var(--font-size-xl);
  color: var(--color-gray-800);
  margin-bottom: var(--spacing-3);
  margin-top: var(--spacing-1);
  padding-left: var(--spacing-3);
}

.testimonial-author {
  display: flex;
  align-items: center;
}

.author-image {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: var(--spacing-2);
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: 600;
  margin-bottom: 0;
}

.author-title {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* How It Works Section */
.how-it-works {
  padding: var(--spacing-8) 0;
  background-color: var(--color-primary-50);
}

.steps {
  max-width: 800px;
  margin: 0 auto;
}

.step {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--spacing-4);
}

.step:last-child {
  margin-bottom: 0;
}

.step-number {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary-500);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-right: var(--spacing-3);
  flex-shrink: 0;
}

.step-content h3 {
  margin-bottom: var(--spacing-1);
}

.step-content p {
  color: var(--color-gray-700);
  margin-bottom: 0;
}

/* Use Cases Section */
.use-cases {
  padding: var(--spacing-8) 0;
}

.tabs {
  margin-top: var(--spacing-4);
}

.tab-nav {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-4);
  overflow-x: auto;
}

.tab-btn {
  padding: var(--spacing-2) var(--spacing-3);
  border: none;
  background-color: transparent;
  font-weight: 600;
  color: var(--color-gray-600);
  cursor: pointer;
  transition: all 0.2s ease;
  border-bottom: 2px solid transparent;
}

.tab-btn.active {
  color: var(--color-primary-600);
  border-bottom: 2px solid var(--color-primary-600);
}

.tab-btn:hover {
  color: var(--color-primary-500);
}

.tab-content {
  padding: var(--spacing-2);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-4);
}

.use-case-card {
  padding: var(--spacing-3);
  background-color: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.use-case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.use-case-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
  color: white;
}

.blue {
  background-color: #3b82f6;
}

.teal {
  background-color: #14b8a6;
}

.red {
  background-color: #ef4444;
}

.orange {
  background-color: #f97316;
}

.purple {
  background-color: #8b5cf6;
}

.yellow {
  background-color: #f59e0b;
}

.use-case-card h4 {
  margin-bottom: var(--spacing-1);
  font-size: var(--font-size-base);
}

.use-case-card p {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* Comparison Section */
.comparison {
  padding: var(--spacing-8) 0;
  background-color: var(--color-gray-50);
}

.comparison-table {
  display: flex;
  justify-content: center;
  gap: var(--spacing-3);
  flex-wrap: wrap;
}

.comparison-card {
  background-color: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 300px;
  transition: transform 0.3s ease;
}

.comparison-card.highlight {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.comparison-card:hover {
  transform: translateY(-5px);
}

.comparison-card.highlight:hover {
  transform: translateY(-5px) scale(1.05);
}

.comparison-header {
  padding: var(--spacing-2);
  text-align: center;
  color: white;
}

.comparison-header.red {
  background-color: var(--color-error-500);
}

.comparison-header.yellow {
  background-color: var(--color-warning-500);
}

.comparison-header.green {
  background-color: var(--color-success-500);
}

.comparison-header h3 {
  margin-bottom: 0;
  color: white;
}

.comparison-list {
  list-style: none;
  padding: var(--spacing-3);
}

.comparison-list li {
  margin-bottom: var(--spacing-2);
  display: flex;
  align-items: flex-start;
}

.comparison-list li:last-child {
  margin-bottom: 0;
}

.comparison-list i {
  margin-right: var(--spacing-1);
  margin-top: 4px;
}

.comparison-list .fa-times {
  color: var(--color-error-500);
}

.comparison-list .fa-check {
  color: var(--color-success-500);
}

/* Pricing Section */
.pricing {
  padding: var(--spacing-8) 0;
}

.pricing-card {
  background-color: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  max-width: 500px;
  margin: 0 auto;
}

.pricing-header {
  padding: var(--spacing-4);
  background-color: var(--color-primary-500);
  color: white;
  text-align: center;
}

.pricing-header h3 {
  color: white;
  margin-bottom: var(--spacing-2);
}

.price {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-1);
}

.currency {
  font-size: 1.5rem;
  vertical-align: top;
  margin-right: 2px;
}

.price-subtitle {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin-bottom: 0;
}

.pricing-features {
  padding: var(--spacing-4);
}

.pricing-features ul {
  list-style: none;
}

.pricing-features li {
  margin-bottom: var(--spacing-2);
  display: flex;
  align-items: center;
}

.pricing-features i {
  color: var(--color-success-500);
  margin-right: var(--spacing-1);
}

.pricing-cta {
  padding: 0 var(--spacing-4) var(--spacing-4);
  text-align: center;
}

.guarantee-text {
  margin-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

/* Testimonials Section */
.testimonials {
  padding: var(--spacing-8) 0;
  background-color: var(--color-primary-50);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-4);
}

.testimonial {
  background-color: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-4);
  box-shadow: var(--shadow-md);
}

.testimonial-content {
  margin-bottom: var(--spacing-3);
}

.testimonial-content p {
  font-style: italic;
  color: var(--color-gray-800);
  margin-bottom: 0;
}

/* FAQ Section */
.faq {
  padding: var(--spacing-8) 0;
}

.faq-grid {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--spacing-3);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.faq-question {
  padding: var(--spacing-3);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: white;
}

.faq-question h3 {
  margin-bottom: 0;
  font-size: var(--font-size-lg);
}

.faq-icon {
  color: var(--color-primary-500);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 var(--spacing-3);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  padding: 0 var(--spacing-3) var(--spacing-3);
  max-height: 1000px;
}

/* Final CTA Section */
.final-cta {
  padding: var(--spacing-8) 0;
  background-color: var(--color-primary-600);
  color: white;
}

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

.final-cta h2 {
  color: white;
  margin-bottom: var(--spacing-2);
}

.final-cta p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-4);
}

.final-cta .btn-primary {
  background-color: white;
  color: var(--color-primary-600);
}

.final-cta .btn-primary:hover {
  background-color: var(--color-gray-100);
  color: var(--color-primary-700);
}

.final-cta .guarantee-text {
  color: rgba(255, 255, 255, 0.9);
}

/* Footer */
.footer {
  padding: var(--spacing-6) 0;
  background-color: var(--color-gray-900);
  color: var(--color-gray-400);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.footer-logo img {
  height: 40px;
  margin-bottom: var(--spacing-2);
}

.footer-logo p {
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

.footer-links {
  display: flex;
  gap: var(--spacing-6);
  flex-wrap: wrap;
}

.footer-column h4 {
  color: white;
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-base);
}

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

.footer-column li {
  margin-bottom: var(--spacing-1);
}

.footer-column a {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  transition: color 0.2s ease;
}

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

/* Product name */
.product-name {
  color: var(--color-primary-600);
}

/* Responsive styles */
@media (max-width: 992px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-image {
    margin-top: var(--spacing-4);
  }
  
  .feature-card {
    align-items: center;
    text-align: center;
  }
  
  .feature-icon {
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 768px) {
  .header-content {
    height: 70px;
  }
  
  .nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .cta-button-small {
    display: none;
  }
  
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
  
  .hero {
    padding: 120px 0 var(--spacing-4);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .tab-nav {
    flex-wrap: wrap;
  }
  
  .comparison-table {
    flex-direction: column;
    align-items: center;
  }
  
  .comparison-card {
    margin-bottom: var(--spacing-3);
  }
  
  .comparison-card.highlight {
    transform: none;
  }
  
  .footer-content {
    flex-direction: column;
  }
}

@media (max-width: 576px) {
  .hero {
    padding: 100px 0 var(--spacing-3);
  }
  
  h1 {
    font-size: var(--font-size-2xl);
  }
  
  h2 {
    font-size: var(--font-size-xl);
  }
  
  .section-header {
    margin-bottom: var(--spacing-4);
  }
  
  .testimonial-card {
    padding: var(--spacing-3);
  }
  
  .testimonial-text {
    font-size: var(--font-size-lg);
  }
}