/* Center footer buttons */
.footer-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f0f0f0;
  color: #333;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
  padding: 20px;
}

/* Layout */
header, section, footer {
  max-width: 800px;
  margin: 40px auto;
  padding: 20px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

header .btn{
  margin-left: 10px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 40px 20px;
}

.hero h1 {
  font-size: 2.5rem;
  color: #0077cc;
}

.hero p {
  font-size: 1.2rem;
  margin: 10px 0;
}

.btn {
  display: inline-block;
  margin-top: 15px;
  padding: 10px 20px;
  background-color: #0077cc;
  color: white;
  text-decoration: none;
  border-radius: 8px;
}

.btn:hover {
  background-color: #005fa3;
}

/* Section Headers */
h2 {
  margin-bottom: 10px;
  color: #0077cc;
}

/* Projects */
.project {
  margin-bottom: 20px;
}

.project a {
  color: #0077cc;
  text-decoration: none;
  font-weight: bold;
}

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

/* Certificates */
#certificates ul {
  list-style: disc;
  padding-left: 20px;
}

/* Contact */
#contact a {
  color: #0077cc;
  text-decoration: none;
}

/* Footer */
footer {
  text-align: center;
  font-size: 0.9rem;
  color: #666;
  background: none;
  box-shadow: none;
}

/* Dark Mode */
body.dark {
  background-color: #121212;
  color: #eee;
}

body.dark header,
body.dark section {
  background-color: #1e1e1e;
  box-shadow: 0 4px 12px rgba(255,255,255,0.05);
}

body.dark .btn {
  background-color: #333;
  color: #eee;
}

body.dark .btn:hover {
  background-color: #555;
}

body.dark a {
  color: #66ccff;
}

/* Responsive */
@media (max-width: 600px) {
  body {
    padding: 10px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .btn {
    padding: 8px 16px;
  }
}