* {
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  margin: 0;
  background: #0f172a;
  color: #e5e7eb;
}

header {
  background: linear-gradient(135deg, #1e3a8a, #0f172a);
  padding: 40px 20px;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 2.5rem;
}

header p {
  margin: 10px 0;
}

header a {
  color: #60a5fa;
  text-decoration: none;
}

main {
  padding: 40px 10%;
}

section {
  margin-bottom: 60px;
}

h2 {
  border-left: 5px solid #3b82f6;
  padding-left: 15px;
  margin-bottom: 25px;
}

.project {
  background: #020617;
  border-radius: 10px;
  padding: 25px;
  margin-bottom: 25px;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.1);
}

.project h3 {
  margin-top: 0;
  color: #93c5fd;
}

.project ul {
  padding-left: 20px;
}

.project li {
  margin-bottom: 8px;
}

a {
  color: #60a5fa;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.iframe-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  margin-top: 20px;
}

.iframe-container iframe {
  position: absolute;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
}

footer {
  text-align: center;
  padding: 20px;
  background: #020617;
  color: #94a3b8;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  margin-top: 10px;
  background-color: #3b82f6;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  transition: background-color 0.3s ease;
  font-weight: bold;
}

.btn:hover {
  background-color: #2563eb;
}