body {
  min-height: inherit;
}
.navbar-custom {
  background-color: #000000;
}
label {
  text-align: center;
  display: block;
}

/* Floating button base */
.fab-container {
  position: fixed;
  top: 30px;
  left: 30px;
  z-index: 9999;
}

.fab-main {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #0d6efd;
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s;
}

.fab-main:active {
  transform: scale(0.95);
}

.fab-sub {
  position: absolute;
  border-radius: 5px;
  background-color: #0d6efd;
  color: white;
  border: none;
  display: block;
  width: max-content;
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s ease;
}
.fab-sub a {
  color: white;
  text-decoration: none;
  padding: 3px;
  font-size: 10px;
  display: block;
  color: #dbe9ff; /* darker gray text */
  text-shadow: 1px 1px 1px #0a58ca,
    /* subtle shadow to enhance depth */ -1px -1px 1px #3d8bfd;
}
.fab-container.open .fab-sub {
  opacity: 1;
  pointer-events: auto;
}

.invalid-challan {
  color: red;
  font-weight: bold;
}