:root {
  --primary-color: #0f172a;
  --accent-color: #3b82f6;
  --text-color: #1e293b;
}
body {
  margin: 0;
  padding: 0;
  background-image: linear-gradient(rgba(59,130,246,0.4), rgba(59,130,246,0.4)), url(../img/Background.png);
  background-size: cover;
  background-attachment: fixed;
  background-color: #3B82F6;
  color: var(--text-color);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
  scroll-behavior: smooth;
}
header {
  color: white;
  background: var(--accent-color);
  transition: background-color 0.5s ease;
}
header.scrolled {
  background: rgba(15, 23, 42, 0.8);
}
.navbar a {
  color: white;
  margin: 0 1rem;
}
.navbar a:hover {
  color: var(--accent-color);
}
.nav-link {
  color: #3B82F6;
  transition: all 0.3s ease;
  padding: 0.25rem 0.75rem;
  border-radius: 0.375rem;
}
.nav-link:hover {
  background-color: white;
  color: #3B82F6;
  border: 2px solid white;
}
#home {
  background: var(--accent-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0;
  min-height: 100vh;
}
.custom-size {
  width: 260px;
  height: 260px;
}
.content h2 {
  color: var(--primary-color);
  margin-top: 2rem;
}
.footer {
  background: var(--primary-color);
  color: white;
  text-align: center;
  padding: 1rem 0;
  margin-top: 4rem;
}

@media (max-width: 768px) {
  .navbar.desktop {
    display: none;
  }
  #mobile-menu.show {
    display: block;
    background: var(--primary-color);
  }
  #mobile-menu a {
    display: block;
    padding: 1rem;
    border-top: 1px solid #334155;
  }
}

.portfolio-link {
  color: #3B82F6;
  transition: all 0.3s ease;
  padding: 0.25rem 0.25rem;
  border-radius: 0.375rem;
}
/* underline none*/
.portfolio-link:hover {
  background-color: #3B82F6;
  color: white;
  border: 2px solid white;
  margin: 0.25rem;
}

.contact-link {
  color: white;
  background-color: #3B82F6;
  transition: all 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  border: white 2px solid;
}

.contact-link:hover {
  background-color: white;
  color: #3B82F6;
  border: 2px solid #3B82F6;
}