body {
  font-size: .875rem;
}

/* Mobile-first responsive typography */
@media (max-width: 575.98px) {
  body {
    font-size: 0.85rem;
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
}

.feather {
  width: 16px;
  height: 16px;
  vertical-align: text-bottom;
}

/*
 * Sidebar
 */

.sidebar {
  z-index: 100; /* Behind the navbar */
  padding: 0;
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
}

.sidebar-sticky {
  position: -webkit-sticky;
  position: sticky;
  top: 48px; /* Height of navbar */
  height: calc(100vh - 48px);
  padding-top: .5rem;
  overflow-x: hidden;
  overflow-y: auto; /* Scrollable contents if viewport is shorter than content. */
}

.sidebar .nav-link {
  font-weight: 500;
  color: #333;
}

.sidebar .nav-link .feather {
  margin-right: 4px;
  color: #999;
}

.sidebar .nav-link.active {
  background-color: #007bff;
  color: white; 
}

.sidebar .nav-link:hover .feather,
.sidebar .nav-link.active .feather {
  color: inherit;
}

.sidebar-heading {
  font-size: .75rem;
  text-transform: uppercase;
}

/*
 * Navbar
 */

.navbar-brand {
  padding-top: .75rem;
  padding-bottom: .75rem;
  font-size: 1rem;
  background-color: rgba(0, 0, 0, .25);
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, .25);
}

.navbar-nav {
  display: flex;
  align-items: center;
}

.navbar-nav.ml-auto {
  margin-left: auto;
}

p.nav-link {
  color: #e5e5e5;
}

a.nav-link:hover {
  background-color: #007bff;
  color: white;
  transition: background-color 0.3s ease, color 0.3s ease;
}
/*
 * Utilities
 */

.border-top { border-top: 1px solid #e5e5e5; }
.border-bottom { border-bottom: 1px solid #e5e5e5; }

/* Mobile-friendly spacing */
@media (max-width: 767.98px) {
  .container-fluid {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
  
  main {
    padding: 1rem 0.5rem;
  }
  
  /* Make buttons touch-friendly */
  .btn {
    min-height: 44px;
    padding: 0.5rem 1rem;
  }
  
  .btn-sm {
    min-height: 36px;
    padding: 0.35rem 0.75rem;
  }
  
  /* Responsive tables */
  .table-responsive {
    font-size: 0.85rem;
  }
  
  .table-responsive th,
  .table-responsive td {
    padding: 0.5rem 0.25rem;
  }
}

/* Tablet adjustments */
@media (min-width: 768px) and (max-width: 991.98px) {
  main {
    padding: 1.5rem 1rem;
  }
}