*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: #4a98f6;
    padding: 20px;
    font-family: 'Poppins', sans-serif;
}

.container{
    display: flex;
    width: 100%;
    max-width: 1050px;
    padding: 10px;
    gap: 13px;
    align-items: stretch;
}

section{
    background-color: #fff;
    border-radius: 7px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* =========================
   TOOLS BOARD
========================= */
.tools-board{
    width: 210px;
    padding: 15px 22px 15px;
    flex-shrink: 0;
}

.tools-board .row{
    margin-bottom: 20px;
}

.row .options{
    list-style: none;
    margin: 10px 0 0 5px;
}

.row .options .option{
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    cursor: pointer;
    flex-wrap: wrap;
}

.option:is(:hover, .active) img{
    color: #4a98f6;
}

.option :where(span, label){
    color: #5a6168;
    padding-left: 10px;
    font-size: 14px;
}

.option:is(:hover, .active) :where(span, label){
    color: #4a98f6;
}

.option #fill-color{
    height: 14px;
    width: 14px;
    cursor: pointer;
}

#fill-color:checked ~ label{
    color: #4a98f6;
}

.option #size-slider{
    width: 100%;
    height: 5px;
    margin-top: 10px;
    cursor: pointer;
}

/* =========================
   COLORS
========================= */
.colors .options{
    display: flex;
    justify-content: space-between;
    gap: 8px;
    flex-wrap: wrap;
}

.colors .option{
    height: 20px;
    width: 20px;
    background-color: red;
    border-radius: 50%;
    margin-top: 3px;
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
}

.colors .option.selected::before{
    position: absolute;
    content: "";
    top: 50%;
    left: 50%;
    height: 12px;
    width: 12px;
    background-color: inherit;
    border-radius: inherit;
    border: 2px solid #fff;
    transform: translate(-50%, -50%);
}

.colors .option:nth-child(1){
    background-color: #fff;
    border: 1px solid #ccc;
}

.colors .option:nth-child(2){
    background-color: #000;
}

.colors .option:nth-child(3){
    background-color: red;
}

.colors .option:nth-child(4){
    background-color: green;
}

.colors .option:nth-child(5){
    background-color: #4a98f6;
}

.colors .option:first-child.selected::before{
    border: 2px solid #ccc;
}

.option #color-picker{
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

/* =========================
   BUTTONS
========================= */
.row-button button{
    width: 100%;
    color: #fff;
    margin-top: 10px;
    outline: none;
    border: none;
    padding: 12px;
    cursor: pointer;
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.row-button .clear-canvas{
    background-color: #6c757d;
    border: 1px solid #6c757d;
}

.row-button .clear-canvas:hover{
    background-color: #5a6268;
}

.row-button .save-img{
    color: #fff;
    background: #4a98f6;
    border: 1px solid #4a98f6;
}

.row-button .save-img:hover{
    background: #3a86e8;
}

/* =========================
   TITLE
========================= */
#saving-title{
    min-height: 50px;
    background-color: #6c757d;
    color: #fff;
    border-radius: 10px;
    width: 100%;
    text-align: center;
    border: 2px solid #000;
    font-size: 1.2rem;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* =========================
   DRAWING BOARD
========================= */
.drawing-board{
    flex: 1;
    min-height: 600px;
    overflow: hidden;
}

.drawing-board canvas{
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 7px;
}

/* =========================
   LARGE TABLET
========================= */
@media (max-width: 992px){
    .container{
        max-width: 100%;
        gap: 10px;
    }

    .tools-board{
        width: 190px;
        padding: 15px;
    }

    .drawing-board{
        min-height: 500px;
    }

    #saving-title{
        font-size: 1.1rem;
    }
}

/* =========================
   TABLET
========================= */
@media (max-width: 768px){
    body{
        padding: 15px;
    }

    .container{
        flex-direction: column;
        gap: 15px;
    }

    .tools-board{
        width: 100%;
        padding: 18px;
    }

    .drawing-board{
        width: 100%;
        min-height: 450px;
    }

    .row .options{
        margin-left: 0;
    }

    .colors .options{
        justify-content: flex-start;
    }

    .row-button{
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
    }

    .row-button button{
        flex: 1;
        min-width: 140px;
    }

    #saving-title{
        font-size: 1rem;
        min-height: 45px;
    }
}

/* =========================
   MOBILE
========================= */
@media (max-width: 480px){
    body{
        padding: 10px;
    }

    .container{
        padding: 0;
        gap: 12px;
    }

    .tools-board{
        padding: 15px 12px;
        border-radius: 10px;
    }

    .tools-board .row{
        margin-bottom: 16px;
    }

    .option :where(span, label){
        font-size: 13px;
        padding-left: 8px;
    }

    .colors .options{
        gap: 10px;
    }

    .colors .option{
        width: 22px;
        height: 22px;
    }

    .row-button{
        flex-direction: column;
    }

    .row-button button{
        width: 100%;
        min-width: 100%;
        padding: 12px;
        font-size: 14px;
    }

    .drawing-board{
        min-height: 320px;
        border-radius: 10px;
    }

    #saving-title{
        font-size: 0.95rem;
        padding: 8px;
    }
}

/* =========================
   EXTRA SMALL DEVICES
========================= */
@media (max-width: 320px){
    .option :where(span, label){
        font-size: 12px;
    }

    #saving-title{
        font-size: 0.85rem;
    }

    .drawing-board{
        min-height: 260px;
    }
}