/* Base Reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* HTML + Body */
html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}
body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
  font-display: swap;
  font-size: 16px;
  line-height: 1.6;
  background: linear-gradient(135deg, #181e2c 60%, #182844 100%);
  background: #0b1622;
  color: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header */
header {
  position: sticky;
  top: 0;
  background: #0b1622;
  z-index: 1000;
  border-bottom: 1px solid #555;
  border-image: linear-gradient(90deg, #FFD464, #2AE9BB, #FFD464) 1;
}

/* Main */
main {
  background-image: url('../images/digital_bridge.webp');
  background-position: 0px 80px;
  background-attachment: fixed;
  /* For cross-browser background-attachment support */
  -webkit-background-attachment: fixed;
  background-size: cover;
  background-position: center;
}

/* Section */
section {
  scroll-margin-top: 120px; /* For anchor links */
}

/* Headings */
h1 {
  font-size: 2.5rem;
  line-height: 1.3;
  margin-bottom: 1rem;
}
h2 {
  font-size: 2rem;
  margin: 0.75rem 0;
}
h3 {
  font-size: 1.25rem;
  color: #2ae9bb;
}

/* Paragraphs */
p {
  font-size: 1.125rem;
  color: #eee;
  margin: 0.75em 0;
}

/* Links */
a {
  text-decoration: none;
  color: #20C9D2;
}
a:hover {
  text-decoration: underline;
}

/* Lists */
ul {
  list-style-type: none;
  margin: 0.75em;
}
li {
  position: relative;
  padding-left: 1.8em;
  margin: 0.3em 0;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #cdd6f4;
  transition: color 0.3s ease;
  -webkit-transition: color 0.3s ease;
}
main li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, #20C9D2, #2AE9BB);
  border-radius: 50%;
  box-shadow: 0 0 8px #2AE9BB99;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  -webkit-transition: -webkit-transform 0.3s ease, box-shadow 0.3s ease;
}
li ul {
  margin: 0.25em;
}
li li {
  margin: 0;
}
li li::before {
  width: 6px;
  height: 6px;
  background: linear-gradient(135deg, #2AE9BBdd);
}
code {
  background: #0b1622;
  color: #2AE9BB;
  padding: 0.2em;
  border-radius: 0.5em;
}
main li:hover {
  color: #ffffff;
}
main > li:hover::before {
  transform: scale(1.2);
  -webkit-transform: scale(1.2);
  box-shadow: 0 0 12px #2AE9BBdd;
}

/* Responsive: Desktop XXL */
@media (min-width: 1400px) {
  h1 {
    font-size: 2.5rem;
  }
  li {
    margin-bottom: 0;
  }
}