body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  text-align: center;
  background: #f9f9f9;
  color: #333;
}

h1, h2, h3 {
  margin: 10px 0;
}

section {
  padding: 30px 20px;
}

/* ===== HERO SECTION ===== */
header {
  background: linear-gradient(135deg, #00bfff, #0077aa);
  color: white;
  padding: 60px 20px;
  text-align: center;
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

header p {
  font-size: 1.2rem;
  margin-bottom: 20px;
}

header button {
  padding: 12px 25px;
  font-size: 1rem;
  background: #ff9800;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: white;
  transition: all 0.3s ease;
}

header button:hover {
  background: #e68a00;
  transform: scale(1.05);
}

/* ===== CERTIFICATIONS ===== */
.cert-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.cert-card {
  background: white;
  border: 1px solid #ccc;
  border-radius: 10px;
  padding: 15px;
  max-width: 200px;
  text-align: center;
  transition: all 0.3s ease;
}

.cert-card img {
  width: 100%;
  border-radius: 5px;
  margin-bottom: 10px;
}

.cert-card:hover {
  box-shadow: 0 6px 15px rgba(0,0,0,0.2);
  transform: translateY(-5px);
}

/* ===== SKILLS ===== */
#skills ul {
  list-style: none;
  padding: 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

#skills li {
  background: #00bfff;
  color: white;
  margin: 5px 10px;
  padding: 8px 15px;
  border-radius: 5px;
}

/* ===== PROJECT CARDS ===== */
#projects {
  background: #f5f5f5;
  padding: 30px 20px;
}

.project-card {
  border: 1px solid #ccc;
  padding: 20px;
  margin: 20px auto;
  max-width: 400px;
  border-radius: 10px;
  text-align: left;
  background: white;
  transition: all 0.3s ease;
}

.project-card:hover {
  box-shadow: 0 6px 15px rgba(0,0,0,0.2);
  transform: translateY(-5px);
}

.project-card a {
  color: #007bff;
  text-decoration: none;
  margin-right: 10px;
}

.project-card a:hover {
  text-decoration: underline;
}

/* ===== CONTACT ===== */
#contact {
  background: #222;
  color: white;
  padding: 40px 20px;
}

#contact a {
  color: #00bfff;
  text-decoration: none;
}

#contact a:hover {
  text-decoration: underline;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .cert-grid {
    flex-direction: column;
    align-items: center;
  }

  .project-card {
    max-width: 90%;
    margin: 10px auto;
  }

  #skills li {
    margin: 5px;
    padding: 6px 10px;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 2rem;
  }

  header p {
    font-size: 1rem;
  }
}