* {
    margin: 0px;
    padding: 0px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background: linear-gradient(135deg, #3b63b6, #7aa1e2);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 1.7rem;
    font-weight: bold;
    color: #fff;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    list-style-type: none;
}

nav ul li {
    margin: 0 12px;
    display: flex;
    align-items: center;
}

nav ul li a {
    padding: 8px 14px;
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 6px;
    font-size: 1.2rem;
}

nav ul li a:hover {
    background: rgba(255, 255, 255, 0.2);
}

.call-to-action {
    background-color: white;
    color: #3b63b6;
    font-weight: bold;
    padding: 8px 18px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.call-to-action:hover {
    background-color: #3b63b6;
    color: white;
}

main {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    max-width: 800px;
    margin: 20px auto;
    padding: 0 15px;
    background: #f9fafb;
    color: #111;
}

main h1, h2 {
    color: #1f2937;
    padding-top: 20px;
}

main h1 {
    text-align: center;
    margin-bottom: 20px;
}

main pre {
    background: #1e293b;
    color: #f1f5f9;
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
}

main ul {
    margin: 15px 0;
    padding-left: 20px;
}

main a {
    color: #2563eb;
    text-decoration: none;
}

main a:hover {
    text-decoration: underline;
}

footer {
  background: linear-gradient(135deg, #3b63b6, #7aa1e2); 
  color: #d1d5db;      
  padding: 40px 24px;
  margin-top: 80px;  
  font-family: Arial, sans-serif;
}

.footer-container {
  max-width: 1280px;   
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.footer-brand h2 {
    font-size: 1.5rem;   
    font-weight: bold;
    color: white;      
}

.footer-brand p {
    margin-top: 12px;    
    font-size: 0.9rem;
}

.footer-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
}

.footer-section ul {
    list-style: none;
    display: flex;
    padding: 0;
}

.footer-section li {
    margin-bottom: 8px; 
    padding-right: 30px;
}

.footer-section a {
    text-decoration: none;
    color: #d1d5db;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: #464b53;
}

.footer-bottom {
    border-top: 1px solid #374151; 
    margin-top: 32px; 
    padding-top: 16px; 
    text-align: center;
    font-size: 0.75rem;
}