:root {
  /* Modern minimalist color palette inspired by Salt.ai */
  --primary-dark: #0a0a0a;
  --secondary-dark: #1a1a1a;
  --accent-purple: #792ef2;
  --accent-purple-light: #9d5cff;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --border-subtle: #27272a;
  --bg-card: #09090b;
  --bg-card-hover: #18181b;
  --gradient-primary: linear-gradient(135deg, #792ef2 0%, #9d5cff 100%);
  --gradient-subtle: linear-gradient(135deg, #18181b 0%, #27272a 100%);
  
  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-secondary: 'Inter', system-ui, sans-serif;
}

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--primary-dark);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header & Navigation */
header {
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.025em;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 400;
  font-size: 0.9rem;
  transition: color 0.2s ease;
  position: relative;
}

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

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-purple);
  transition: width 0.2s ease;
}

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

.dropdown {
  position: relative;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--secondary-dark);
  border: 1px solid var(--border-subtle);
  min-width: 180px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  border-radius: 12px;
  padding: 0.5rem 0;
  margin-top: 0.25rem;
  z-index: 1001;
}

.dropdown:hover .dropdown-content,
.dropdown-content:hover {
  display: block;
}

/* Ensure smooth transition between parent and dropdown */
.dropdown::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 0.25rem;
  background: transparent;
  z-index: 1002;
}

.dropdown-content a {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background-color 0.2s ease;
}

.dropdown-content a:hover {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
}

/* Main Content */
main {
  margin-top: 80px;
}

/* Hero Section */
.hero {
  background: var(--gradient-primary);
  color: var(--white);
  padding: 6rem 5% 4rem;
  text-align: center;
}

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

.hero h1 {
  font-family: var(--font-secondary);
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.cta-button {
  display: inline-block;
  background: var(--white);
  color: var(--primary-blue);
  padding: 1rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Sections */
.section {
  padding: 6rem 5%;
}

.section:nth-child(even) {
  background: var(--secondary-dark);
}

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

.section-title {
  font-family: var(--font-primary);
  font-size: 3rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.125rem;
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 4rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: var(--white);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.card h3 {
  font-family: var(--font-primary);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
  text-align: center;
}

.card p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.95rem;
}

/* Forms */
.form-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--white);
  padding: 3rem;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--dark-navy);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--secondary-blue);
}

.submit-button {
  background: var(--gradient-primary);
  color: var(--white);
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease;
  width: 100%;
}

.submit-button:hover {
  transform: translateY(-2px);
}

/* Footer */
footer {
  background: var(--primary-dark);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 3rem 5% 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
  font-size: 0.9rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    font-size: 1.1rem;
  }
  
  .section {
    padding: 3rem 5%;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s ease-out;
}

.animate-fadeInLeft {
  animation: fadeInLeft 0.8s ease-out;
}

.animate-fadeInRight {
  animation: fadeInRight 0.8s ease-out;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Modern Hero Section */
.hero {
  background: var(--primary-dark);
  color: var(--text-primary);
  padding: 10rem 5% 8rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(121, 46, 242, 0.1) 0%, transparent 70%);
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-purple-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* Statistics Section */
.stats-section {
  background: var(--secondary-dark);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 4rem 5%;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  max-width: 1000px;
  margin: 0 auto;
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--accent-purple);
  display: block;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* Modern Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

.card:hover::before {
  transform: scaleX(1);
}

.card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--accent-purple);
}

/* Icon Cards */
.icon-card {
  text-align: center;
  position: relative;
}

.icon-card::before {
  content: '🤖';
  font-size: 3rem;
  display: block;
  margin-bottom: 1rem;
}

.icon-card:nth-child(1)::before { content: '🧠'; }
.icon-card:nth-child(2)::before { content: '⚡'; }
.icon-card:nth-child(3)::before { content: '🎯'; }
.icon-card:nth-child(4)::before { content: '🔒'; }

/* Process Steps */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  position: relative;
}

.process-step {
  background: var(--white);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  position: relative;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
}

.process-step:hover {
  transform: scale(1.02);
}

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

/* Technology Icons */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.tech-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.5rem;
  text-align: center;
  transition: all 0.2s ease;
}

.tech-item:hover {
  transform: translateY(-2px);
  background: var(--bg-card-hover);
  border-color: var(--accent-purple);
}

.tech-logo {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 8px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--text-primary);
}

/* Testimonials */
.testimonial {
  background: var(--light-gray);
  border-radius: 16px;
  padding: 3rem;
  margin: 2rem 0;
  position: relative;
}

.testimonial::before {
  content: '"';
  font-size: 4rem;
  color: var(--accent-blue);
  position: absolute;
  top: 1rem;
  left: 2rem;
  font-family: serif;
}

.testimonial-text {
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.testimonial-author {
  font-weight: 600;
  color: var(--primary-blue);
  padding-left: 2rem;
}

/* Modern Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent-purple);
  color: var(--text-primary);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary:hover {
  background: var(--accent-purple-light);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--accent-purple);
}

/* Feature Highlights */
.feature-highlight {
  background: var(--gradient-subtle);
  border-left: 2px solid var(--accent-purple);
  padding: 1.5rem;
  margin: 1rem 0;
  border-radius: 0 8px 8px 0;
}

.feature-title {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

/* Pricing Tables */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.pricing-card {
  background: var(--white);
  border-radius: 16px;
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  position: relative;
  transition: transform 0.3s ease;
}

.pricing-card.featured {
  border: 2px solid var(--secondary-blue);
  transform: scale(1.05);
}

.pricing-card:hover {
  transform: translateY(-10px);
}

.price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin: 1rem 0;
}

/* FAQ Section */
.faq-item {
  background: var(--white);
  border-radius: 12px;
  margin: 1rem 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.faq-question {
  padding: 1.5rem 2rem;
  background: var(--light-gray);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.faq-question:hover {
  background: var(--accent-blue);
  color: var(--white);
}

.faq-answer {
  padding: 1.5rem 2rem;
  line-height: 1.7;
}

/* Timeline */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background: var(--gradient-primary);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -1px;
}

.timeline-item {
  padding: 2rem 3rem;
  position: relative;
  background: var(--white);
  border-radius: 16px;
  margin: 2rem 0;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.timeline-item::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--secondary-blue);
  border-radius: 50%;
  top: 2rem;
  left: -41px;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.bg-light {
  background-color: var(--secondary-dark);
}

.bg-gradient {
  background: var(--gradient-primary);
  color: var(--text-primary);
}

.shadow-lg {
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.rounded {
  border-radius: 12px;
}

.rounded-lg {
  border-radius: 16px;
}

/* Badge */
.badge {
  background: var(--accent-blue);
  color: var(--white);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-block;
  margin-top: 1rem;
}