* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background:
    linear-gradient(rgba(15,23,42,0.92), rgba(15,23,42,0.92)),
    url("images/backgrounds/mesh-bg.png");
  background-size: cover;
  color: #e5e7eb;
  line-height: 1.6;
}

header {
  position: fixed;
  width: 100%;
  background: rgba(2,6,23,0.9);
  padding: 1rem 2rem;
  top: 0;
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: #e5e7eb;
  text-decoration: none;
}

.logo {
  color: #38bdf8;
  font-weight: bold;
}

.hero {
  padding-top: 7rem;
  text-align: center;
}

.profile-pic {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #38bdf8;
  margin-bottom: 1rem;
}

.hero h1 span {
  color: #38bdf8;
}

.hero-buttons {
  margin-top: 1rem;
}

.btn {
  background: #38bdf8;
  color: #020617;
  padding: 0.6rem 1.3rem;
  border-radius: 6px;
  text-decoration: none;
  margin-left: 0.5rem;
}

.btn-outline {
  border: 2px solid #38bdf8;
  color: #38bdf8;
  padding: 0.6rem 1.3rem;
  border-radius: 6px;
  text-decoration: none;
}

.section {
  max-width: 900px;
  margin: auto;
  padding: 4rem 2rem;
}

h2 {
  color: #38bdf8;
  margin-bottom: 1rem;
}

.card {
  background: rgba(2,6,23,0.6);
  padding: 1.4rem;
  border-radius: 10px;
  margin-bottom: 1.2rem;
}

.timeline-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.dot {
  width: 10px;
  height: 10px;
  background: #38bdf8;
  border-radius: 50%;
  margin-top: 6px;
}

.date {
  font-size: 0.85rem;
  color: #94a3b8;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skills span {
  background: #1e293b;
  padding: 0.4rem 0.9rem;
  border-radius: 20px;
}

.cert-card {
  display: flex;
  gap: 1rem;
  align-items: center;
  background: rgba(2,6,23,0.6);
  padding: 1rem;
  border-radius: 10px;
}

.cert-card img {
  width: 60px;
  background: white;
  padding: 4px;
  border-radius: 8px;
}

footer {
  text-align: center;
  padding: 1rem;
  background: rgba(2,6,23,0.9);
}

@media (max-width: 768px) {
  nav ul {
    display: none;
  }
}