.card-img-top {
    height: 180px;
    object-fit: cover;
}

.gravatar-200 {
  max-width: 200px;
  max-height: 200px;
  width: 100%;
  height: 100%;
}

.dt-buttons {
  margin-left: 1.5rem;
}

.bd-placeholder-img {
	font-size: 1.125rem;
	text-anchor: middle;
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}

.navbar-path {
  color: #fff;
}

@media (min-width: 768px) {
	.bd-placeholder-img-lg {
		font-size: 3.5rem;
	}
}

.feather {
  width: 16px;
  height: 16px;
  vertical-align: text-bottom;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.sidebar, .navbar-system {
  font-size: .875rem;
}

/*
 * Sidebar
 */

.sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100; /* Behind the navbar */
  padding: 48px 0 0; /* Height of navbar */
  box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
}

.sidebar-sticky {
  position: relative;
  top: 0;
  height: calc(100vh - 48px);
  padding-top: .5rem;
  overflow-x: hidden;
  overflow-y: auto; /* Scrollable contents if viewport is shorter than content. */
}

@supports ((position: -webkit-sticky) or (position: sticky)) {
  .sidebar-sticky {
    position: -webkit-sticky;
    position: sticky;
  }
}

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

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

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

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

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

/*
 * Content
 */

.main-system {
  padding-top: 48px; /* Space for fixed navbar */
}

/*
 * Navbar
 */

.navbar-brand-system {
  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);
}

/*
 * Sign in
 */

.form-signin {
    width: 100%;
    max-width: 330px;
    padding: 15px;
    margin: auto;
}
.form-signin .checkbox {
    font-weight: 400;
}
.form-signin .form-control {
    position: relative;
    box-sizing: border-box;
    height: auto;
    padding: 10px;
    font-size: 16px;
}
.form-signin .form-control:focus {
    z-index: 2;
}
.form-signin input[type="text"] {
    margin-bottom: -1px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}
.form-signin input[type="password"] {
    margin-bottom: 10px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}

.attendance-cell-changed {
    border-color: #ff9800 !important;
    border-width: 2px !important;
}

.attendance-cell-error {
    border-color: #f44336 !important;
    border-width: 2px !important;
    background-color: #ffebee !important;
}

/* Add asterisk to labels for required fields */
/* Add asterisk to labels for required fields.
   Support both label-before-input and input-before-label patterns.
   The :has() selector works in modern browsers but isn't universal, so
   also include the more widely supported "input + label" form. */
input[required] + label::after,
textarea[required] + label::after,
select[required] + label::after,
label:has(+ input[required])::after,
label:has(+ select[required])::after,
label:has(+ textarea[required])::after {
  content: " *";
  color: #dc3545;
  font-weight: bold;
}