style.css

*, 
*::after,
*::before {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-transform: capitalize;
}
:root {
    /* colors */
    --cl-1: hsl(0, 89%, 50%);
    --cl-2: hsl(268, 57%, 51%);
    --cl-3: hsl(268, 56%, 21%);
    --cl-4: hsl(268, 56%, 10%);
    --cl-5: hsl(2, 18%, 90%);
    --cl-6: hsl(0, 81%, 21%);
    --cl-7: hsl(113, 91%, 47%);
    --cl-8: hsla(0, 0%, 0%, 0.651);
    /* font size */
    --fs-1: 1rem;
    /* width */
    --width: 25em;
    --width-2: 10em;
    /* ************** setting colors ************ */
    --cl-1-1: hsl(125, 89%, 50%); 
    --cl-2-2: hsl(192, 76%, 31%);
    --cl-3-3: hsl(332, 85%, 19%);
    --cl-4-4: hsl(69, 78%, 36%);
}
/* center main container body */
body {
    background-image: linear-gradient(45deg, var(--cl-1), var(--cl-3), var(--cl-2));
    min-height: 100vh;
    display: grid;
    justify-content: center;
    align-items: center;
}
/* center container */
.center-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: var(--width);
    background-color: var(--cl-2);
    height: auto;
    box-shadow: 0 0 500px 100px var(--cl-4);
    border-radius: 5px;
}
.center-section h1 {
    color: var(--cl-5);
    margin: calc(var(--width) / 19);
    font-size: calc(var(--fs-1) * 2);
}
.center-section p {
    font-size: calc(var(--fs-1));
}

#input-value {
    width: calc(var(--width-2) * 2);
    height: calc(var(--width-2) / 4);
    border-bottom-left-radius: 10px;
    border-top-left-radius: 10px;
    padding: 4px;
    border: none;
    font-size: var(--fs-1);
    margin-bottom: calc(var(--width) / 10)
}
.submit-btn {
    color: var(--cl-5);
    min-width: calc(var(--width) / 9);
    height: calc(var(--width-2) / 4);
    cursor: pointer;
    border-top-right-radius: 10px ;
    border-bottom-right-radius: 10px ;
    border: none;
    overflow: hidden;
    padding: 0 4px;
    background-color: var(--cl-4);
    font-size: var(--fs-1);
    transition: background-color 0.17s linear;
}
.submit-btn:hover {
    background-color: var(--cl-3) !important;
}
/* each added item */
.item {
    display: flex;
    justify-content: space-between;
    width: calc(var(--width) - 2em);
    margin: 1em;
    background-color: var(--cl-3);
    padding: 0.6em;
    color: var(--cl-5);
    border-radius: 10px;
    transition: background-color 0.2s linear;
    align-items: center;
    font-size: var(--fs-1);
}
/* hover effect */
.item:hover {
    background-color: var(--cl-4);
}
/* clear button */
.clear-btn {
    background-color: transparent;
    border: none;
    color: var(--cl-5);
    transition: color 0.17s linear;
    cursor: pointer;
    letter-spacing: 4px;
    font-size: var(--fs-1);
    margin-bottom: 7px;
}
/* hoveer effect */
.clear-btn:hover {
    color: red;
}
/* container */
.container {
    text-align: center;
    /*   visibility of container*/
    visibility: hidden;   
}
/* ******* edit and delete buttons ******** */
.material-symbols-outlined{
    color: var(--cl-5);
    padding-right: 5px;
    transition: color 0.2s linear;
}
.btns-container button {
    background-color: transparent;
    border: none;
    height: auto;
    cursor: pointer;
}
.edit-btn span:hover {
    color: green;
}
.delete-btn span:hover {
    color: red;
}
/* alerts */
.alert {
    padding: calc(var(--width-2) / 8);
    height: 2em;
}
/* green alert text */
.alert-success {
    color: var(--cl-7);
}
/* red alert text */
.alert-danger {
    color: var(--cl-6);
}
.show-container {
    visibility: visible;
}
@media (max-width: 450px) {
    :root {
        /* font size */
        --fs-1: 0.8rem;
        /* width */
        --width: 20em;
        --width-2: 8em
    }
}
/* *************************  color flipper ******************* */
.icon {
    position: absolute;
    top: 10%;
    right: 10%;
    z-index: 10;
}
.icon .material-symbols-outlined {
    font-size: calc(var(--fs-1) * 1.9);
    transition: all 0.37s linear;
    cursor: pointer;
    padding: 0;
}
.icon .material-symbols-outlined:hover {
    transform: rotate(90deg);
}

/* ****  modal ***** */
.modal {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--cl-8);
    visibility: hidden;
    
}
.main-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: var(--width);
    height: var(--width);
    z-index: 10;
    background-image: radial-gradient(var(--cl-5), var(--cl-2), var(--cl-6));
    visibility: hidden;
    border-radius: 5px;
    box-shadow: 0 0 50px 20px var(--cl-2);
}
.show-modal {
    visibility: visible;
}
/* close button */
.close-btn {
    position: inherit;
    right: 5px;
    top: 5px;
}
.close-icon {
    cursor: pointer;
    padding: 0;
}
/* color swither */
.color-switcher {
    display: flex;
    gap: 20px;
    position: relative;
    top: 10%;
    left: 10%;
}
.color-switcher .color {
    width: calc(var(--width) / 20);
    height: calc(var(--width) / 20);
    border-radius: 50%;
    display: inline-block;
    cursor: pointer;
    border: none;
}
.color-switcher .colors-header {
    font-size: var(--fs-1);
    color: var(--cl-4);
}
.color-switcher .color:focus {
    border: 2px solid black;
}
input[type="radio"] {
    /* Add if not using autoprefixer */
    -webkit-appearance: none;
    /* Remove most all native input styles */
    appearance: none;
    /* For iOS < 15 */
    /* Not removed via appearance */
    margin: 0;
    font: inherit;
    width: 1.15em;
    height: 1.15em;
  }