body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  display: flex;
  flex-direction: row;
  background-color: #0f172a;
  color: #e2e8f0;
}

#navbar {
  width: 280px;
  min-height: 100vh;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #e2e8f0;
  padding: 30px 20px;
  position: fixed;
  top: 0;
  left: 0;
  overflow-y: auto;
  border-right: 1px solid #334155;
  box-shadow: 4px 0 15px rgba(0, 0, 0, 0.2);
}

#navbar header {
  font-size: 1.6rem;
  margin-bottom: 2rem;
  font-weight: 700;
  color: #fbbf24;
  text-align: center;
  letter-spacing: 1px;
  border-bottom: 2px solid #fbbf24;
  padding-bottom: 12px;
}

.nav-link {
  display: block;
  color: #cbd5e1;
  text-decoration: none;
  margin: 12px 0;
  font-size: 1rem;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.nav-link:hover {
  background-color: #334155;
  color: #fbbf24;
  transform: translateX(5px);
}

#main-doc {
  margin-left: 300px;
  padding: 40px;
  max-width: 900px;
  background-color: #0f172a;
}

.main-section {
  margin-bottom: 50px;
  background-color: #1e293b;
  padding: 25px;
  border-radius: 12px;
  border-left: 4px solid #fbbf24;
  transition: transform 0.3s ease;
}

.main-section:hover {
  transform: translateX(5px);
}

.main-section header {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #fbbf24;
}

.main-section p {
  margin: 12px 0;
  color: #cbd5e1;
  line-height: 1.7;
}

code {
  background-color: #0f172a;
  padding: 12px 15px;
  display: block;
  margin: 15px 0;
  border-left: 3px solid #fbbf24;
  border-radius: 8px;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  color: #fbbf24;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

ul {
  margin: 15px 0;
  padding-left: 25px;
}

li {
  margin-bottom: 8px;
  color: #cbd5e1;
}

li::marker {
  color: #fbbf24;
}

/* Responsive Design */
@media (max-width: 768px) {
  body {
    flex-direction: column;
  }

  #navbar {
    width: 100%;
    position: relative;
    min-height: auto;
    padding: 20px;
    border-right: none;
    border-bottom: 1px solid #334155;
  }

  #navbar header {
    margin-bottom: 1rem;
    font-size: 1.4rem;
  }

  .nav-link {
    display: inline-block;
    margin: 5px 8px;
    padding: 6px 12px;
    font-size: 0.9rem;
  }

  .nav-link:hover {
    transform: translateY(-2px);
  }

  #main-doc {
    margin-left: 0;
    padding: 20px;
  }

  .main-section {
    padding: 20px;
  }

  .main-section header {
    font-size: 1.3rem;
  }

  code {
    font-size: 12px;
    padding: 10px;
  }
}

@media (max-width: 480px) {
  #main-doc {
    padding: 15px;
  }

  .main-section {
    padding: 15px;
  }

  .main-section header {
    font-size: 1.2rem;
  }

  code {
    font-size: 11px;
  }
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #1e293b;
}

::-webkit-scrollbar-thumb {
  background: #fbbf24;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #f59e0b;
}

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