/* click effect for all buttons */
.btn {
    transition: transform 0.1s ease, filter 0.1s ease;
}

.btn:active {
    transform: scale(0.96) translateY(2px); /* It shrinks and goes down */
    filter: brightness(0.9); /* It darkens slightly */
}

/* universal button sizing (both Desktop and Mobile)*/
  .custom-spinner .btn {
    width: 40px;                /* fixed width and comfortable for clicking and tapping */
    padding-left: 0 !important;
    padding-right: 0 !important;
    font-size: 1.1rem;          /* text + and - clearly visible */
    font-weight: bold;
  }
  
/* removes native numeric input arrows in browsers */
  input[type="number"]::-webkit-outer-spin-button,
  input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
  }
  input[type="number"] {
    -moz-appearance: textfield;
  }

/* checkbox more readable */
.form-check-input:not(:checked) {
    border: 1pt solid black; 
}

/* highly specific selector to correct input within the group */
.input-group > input.form-control.bg-change-zero.border-primary {
    border: 1px solid var(--bs-primary) !important;
    height: auto !important;
    align-self: stretch !important;
    margin-bottom: 0 !important;
}

/* disabled table */
.disabled-table {
    pointer-events: none; /* prevents clicks, hovering, and selection */
    opacity: 0.5;         /* semi-transparent/disabled visual effect */
    user-select: none;    /* prevents text highlighting. */
}

/* blink text */
.blink-text {
    animation: blink 1s infinite alternate;
}

    @keyframes blink {
        from { opacity: 1; }
        to { opacity: 0; }
}