/* Overall basic configuration */
html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.navbar-nav .nav-item .nav-link {
  color: lightgray;
  transition: color 0.2s ease-in-out, text-shadow 0.2s ease-in-out; /* Smooth transition for color and glow */
}

.navbar-nav .nav-item .nav-link:hover, .navbar-nav .nav-item .nav-link:focus {
  color: lightblue;
  text-shadow: 0 0 8px rgba(173, 216, 230, 0.7); /* Light blue glow */
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

/* Cards layout */
:root {
  --card-bg-color: #3498DB;
  --card-hover-bg-color: #21618C;
  --card-hover-color: #FFFFFF;
  --card-glow-color: #2E86C1;
}

.card-header {
  background-color: var(--card-bg-color);
  font-weight: bold;
  text-align: left;
  color: white;
}

.card:hover .card-header {
  background-color: var(--card-hover-bg-color);
  color: var(--card-hover-color);
  box-shadow: 0 0 8px var(--card-glow-color);
}

.card:hover {
  box-shadow: 0 0 15px var(--card-glow-color);
}

.card-body {
  height: 100%;
  text-align: left;
}

.equal-height {
  display: flex;
  flex-wrap: wrap;
}

.equal-height > [class^='col-'] {
  display: flex;
  flex-direction: column;
}

.card {
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: box-shadow 0.3s ease;
}