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

:root {
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --secondary: #64748b;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --background: #ffffff;
  --surface: #f8fafc;
  --border: #e2e8f0;
  --store-color: #8b5cf6;
  --vm-color: #06b6d4;
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--text-primary);
  background: var(--background);
  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 {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

.logo svg {
  color: var(--primary);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
  margin-left: auto;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
  border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-outline,
.btn-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

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

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

.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
}

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

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

.btn-outline:hover {
  background: var(--surface);
  border-color: var(--secondary);
}

.btn-large {
  padding: 12px 24px;
  font-size: 15px;
}

.btn-vm {
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  color: white;
}

.btn-vm:hover {
  background: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-store {
  background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
  color: white;
}

.btn-store:hover {
  background: linear-gradient(135deg, #6d28d9 0%, #5b21b6 100%);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.badge svg {
  width: 14px;
  height: 14px;
  color: var(--primary);
}

.hero-title {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 64px;
}

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

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 1000px;
  background: radial-gradient(
    circle,
    rgba(59, 130, 246, 0.1) 0%,
    transparent 70%
  );
  pointer-events: none;
}

/* Sections */
section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-description {
  font-size: 17px;
  color: var(--text-secondary);
}

/* Features Section */
.features {
  background: var(--surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.feature-card {
  background: white;
  padding: 28px;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--surface);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Modules Section */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 32px;
}

.module-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s ease;
}

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

.module-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.module-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.module-icon.store {
  background: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);
}

.module-icon.vm {
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
}

.module-header h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 4px;
}

.module-tag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--surface);
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.module-description {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.module-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.module-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.module-feature svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--primary);
}

.module-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: gap 0.2s ease;
}

.module-link:hover {
  gap: 10px;
}

/* Documentation Section */
.docs {
  background: var(--surface);
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.doc-card {
  background: white;
  padding: 28px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.doc-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--surface);
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 16px;
}

.doc-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.doc-content p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.code-block {
  background: var(--text-primary);
  color: #e2e8f0;
  padding: 16px;
  border-radius: 8px;
  font-family: "Courier New", monospace;
  font-size: 13px;
  line-height: 1.6;
}

.docs-cta {
  text-align: center;
}

/* Tech Stack Section */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.tech-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.tech-logo {
  font-size: 40px;
}

.tech-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

/* CTA Section */
.cta {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta h2 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta p {
  font-size: 18px;
  margin-bottom: 32px;
  opacity: 0.9;
}

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

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

.cta .btn-primary:hover {
  background: var(--surface);
}

.cta .btn-outline {
  border-color: rgba(255, 255, 255, 0.3);
  color: white;
}

.cta .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

/* Footer */
.footer {
  background: var(--text-primary);
  color: var(--text-muted);
  padding: 64px 0 24px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 64px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
}

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

.footer-column h4 {
  color: white;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-column a {
  display: block;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 12px;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 48px;
  }

  .modules-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    margin-left: 0;
    border-top: 1px solid var(--border);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 8px;
    transition: all 0.2s ease;
  }

  .nav-links a:hover,
  .nav-links a.active {
    background: var(--surface);
    color: var(--primary);
  }

  .hero {
    padding: 100px 0 60px;
  }

  .hero-title {
    font-size: 32px;
    line-height: 1.2;
  }

  .hero-description {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .hero-actions .btn-large {
    width: 100%;
    justify-content: center;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .badge {
    font-size: 12px;
    padding: 5px 12px;
  }

  .section-title {
    font-size: 28px;
  }

  .section-description {
    font-size: 15px;
  }

  section {
    padding: 60px 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 24px;
  }

  .modules-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .module-card {
    padding: 24px;
  }

  .module-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .docs-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .doc-card {
    padding: 24px;
  }

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .tech-item {
    padding: 20px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .cta h2 {
    font-size: 28px;
  }

  .cta p {
    font-size: 16px;
  }

  .cta-actions {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }

  .cta-actions .btn-large {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 28px;
  }

  .hero-description {
    font-size: 14px;
  }

  .section-title {
    font-size: 24px;
  }

  .btn-large {
    padding: 10px 20px;
    font-size: 14px;
  }

  .tech-grid {
    grid-template-columns: 1fr;
  }

  .module-icon {
    width: 48px;
    height: 48px;
  }

  .module-icon svg {
    width: 24px;
    height: 24px;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content,
.feature-card,
.module-card,
.doc-card {
  animation: fadeIn 0.6s ease-out;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection */
::selection {
  background: var(--primary);
  color: white;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--surface);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary);
}