/* Modern Professional Landing Page Styles */

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Professional Color Palette */
  --primary: #2563eb;        /* Professional blue */
  --primary-dark: #1e40af;   /* Darker blue */
  --primary-light: #dbeafe;  /* Very light blue */
  
  /* Neutral Grays */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-900: #111827;
  
  /* Accents */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Spacing */
  --section-padding: 120px;
  --container-width: 1200px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--gray-900);
  background: #ffffff;
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
  padding: 20px 0;
}

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

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}

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

.nav-links a {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

.btn-nav-primary {
  background: var(--primary);
  color: white !important;
  padding: 10px 24px;
  border-radius: 8px;
  transition: all 0.3s;
}

.btn-nav-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  padding: 180px 0 120px;
  background: linear-gradient(135deg, #ffffff 0%, var(--gray-50) 100%);
  text-align: center;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
}

.hero-title {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  color: var(--gray-900);
}

.hero-subtitle {
  font-size: 24px;
  line-height: 1.75;
  color: var(--gray-600);
  margin-bottom: 48px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 80px;
}

.btn {
  display: inline-block;
  padding: 16px 32px;
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 12px;
  transition: all 0.3s;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.btn-large {
  padding: 20px 48px;
  font-size: 20px;
}

.hero-stats {
  display: flex;
  gap: 64px;
  justify-content: center;
  padding: 48px 0;
  border-top: 1px solid var(--gray-200);
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ============================================
   Section Titles
   ============================================ */
.section-title {
  font-size: 48px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: var(--gray-900);
}

.section-subtitle {
  font-size: 20px;
  text-align: center;
  color: var(--gray-600);
  margin-bottom: 64px;
}

/* ============================================
   How It Works Section
   ============================================ */
.how-it-works {
  padding: var(--section-padding) 0;
  background: white;
}

.steps {
  display: flex;
  gap: 32px;
  align-items: center;
  justify-content: center;
  max-width: 1100px;
  margin: 0 auto;
}

.step {
  flex: 1;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 48px 32px;
  text-align: center;
  transition: all 0.3s;
  position: relative;
}

.step:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
  border-color: var(--primary);
}

.step-number {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
}

.step-icon {
  font-size: 64px;
  margin-bottom: 24px;
  display: block;
}

.step h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--gray-900);
}

.step p {
  color: var(--gray-600);
  font-size: 16px;
  line-height: 1.6;
}

.step-arrow {
  font-size: 32px;
  color: var(--primary);
  flex-shrink: 0;
}

/* ============================================
   Use Cases Section
   ============================================ */
.use-cases {
  padding: var(--section-padding) 0;
  background: var(--gray-50);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.use-case-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 40px;
  transition: all 0.3s;
}

.use-case-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
  border-color: var(--primary);
}

.use-case-icon {
  font-size: 56px;
  margin-bottom: 24px;
  display: block;
}

.use-case-card h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--gray-900);
}

.use-case-card ul {
  list-style: none;
  padding: 0;
}

.use-case-card li {
  padding: 8px 0;
  color: var(--gray-600);
  position: relative;
  padding-left: 24px;
}

.use-case-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: bold;
}

/* ============================================
   Features Section
   ============================================ */
.features {
  padding: var(--section-padding) 0;
  background: white;
}

.features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.feature-item {
  display: flex;
  gap: 24px;
  padding: 32px;
  background: var(--gray-50);
  border-radius: 12px;
  transition: all 0.3s;
}

.feature-item:hover {
  background: var(--primary-light);
  transform: translateX(8px);
}

.feature-check {
  width: 40px;
  height: 40px;
  background: var(--success);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  flex-shrink: 0;
}

.feature-content h4 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--gray-900);
}

.feature-content p {
  color: var(--gray-600);
  font-size: 16px;
  line-height: 1.6;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  text-align: center;
}

.cta-content h2 {
  font-size: 48px;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.cta-content > p {
  font-size: 24px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
}

.cta-content .btn-primary {
  background: white;
  color: var(--primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.cta-content .btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.cta-note {
  margin-top: 16px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 60px 0 20px;
  margin-top: 120px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  color: var(--primary);
  margin-bottom: 12px;
}

.footer-links, .footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links h4, .footer-contact h4 {
  color: white;
  font-weight: 600;
  margin-bottom: 8px;
}

.footer-links a, .footer-contact a {
  color: var(--gray-300);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: 20px;
  text-align: center;
  font-size: 14px;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 48px;
  }
  
  .section-title {
    font-size: 40px;
  }
  
  .steps {
    flex-direction: column;
    gap: 48px;
  }
  
  .step-arrow {
    transform: rotate(90deg);
  }
  
  .use-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-list {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 80px;
  }
  
  .navbar {
    padding: 16px 0;
  }
  
  .nav-links {
    gap: 16px;
    font-size: 14px;
  }
  
  .hero {
    padding: 140px 0 80px;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .hero-subtitle {
    font-size: 18px;
  }
  
  .hero-cta {
    flex-direction: column;
    gap: 12px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 32px;
  }
  
  .section-title {
    font-size: 32px;
  }
  
  .section-subtitle {
    font-size: 16px;
  }
  
  .use-cases-grid {
    grid-template-columns: 1fr;
  }
  
  .step {
    padding: 40px 24px;
  }
  
  .cta-content h2 {
    font-size: 32px;
  }
  
  .cta-content > p {
    font-size: 18px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 28px;
  }
  
  .btn {
    padding: 12px 24px;
    font-size: 16px;
  }
  
  .btn-large {
    padding: 16px 32px;
    font-size: 18px;
  }
  
  .nav-links a:not(.btn-nav-primary) {
    display: none;
  }
}

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

.hero-content > * {
  animation: fadeInUp 0.6s ease-out backwards;
}

.hero-title {
  animation-delay: 0.1s;
}

.hero-subtitle {
  animation-delay: 0.2s;
}

.hero-cta {
  animation-delay: 0.3s;
}

.hero-stats {
  animation-delay: 0.4s;
}