.hero-section {
  position: relative;
  /* background-image: url('https://img.freepik.com/free-vector/blue-background-banner-modern-design_677411-1531.jpg'); */
  background-size: cover;
  background-position: center;
  min-height: 100vh;
}

.hero-section .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  /* semi-transparent black */
  z-index: 0;
}

.hero-section .container {
  z-index: 1;
}

/* --------------------- */
.navbar {
  padding: 0.75rem 1rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  backdrop-filter: saturate(180%) blur(10px);
  background-color: #0076b504;
}

.navbar-nav .nav-link.active {
  font-weight: 600;
}

/* ---------------------- */

/* ------------------------- */
/* Subtle scale-up on hover for project cards */
.project-card {
  background-color: #2c2f36;
  border: none;
  border-radius: 0.75rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 400px;
  /* fixed height */
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.8);
}

.img-wrapper {
  height: 180px;
  /* fixed height for image area */
  border-top-left-radius: 0.75rem;
  border-top-right-radius: 0.75rem;
  background-image: url('https://wallpaperaccess.com/full/7167587.png');
  /* image url here */
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  color: #eee;
}

.btn-project {
  color: #68EFAD;
  border-color: #68EFAD;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.btn-project:hover,
.btn-project:focus {
  background-color: #68EFAD;
  color: #212529;
  text-decoration: none;
}

/* ------------------------- */

/* ----------------------- */
.social-icon i {
  transition: color 0.3s ease;
  vertical-align: middle;
  display: inline-block;
  line-height: 1;
}

.social-icon:hover i.bi-facebook {
  color: #3b5998;
}

/* Facebook blue */
.social-icon:hover i.bi-twitter-x {
  color: #1da1f2;
}

/* Twitter blue */
.social-icon:hover i.bi-linkedin {
  color: #0077b5;
}

/* LinkedIn blue */
.social-icon:hover i.bi-github {
  color: #f8f8f2;
}

/* GitHub light */
.social-icon:hover i.bi-instagram {
  color: #e1306c;
}

/* Instagram pink */
/* ------------------------ */