* {
    margin: 0;
    font-family: "Roboto";
}

body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #09f
}

/* global styles */

.responsive-img-cover {
    object-fit: cover;
    width: 100%;
    height: auto;
}

.container {
    --size: 400px;
    width: var(--size);
    height: var(--size);
    background-image: linear-gradient(45deg, #3c93a9, #5a9f5d);
    display: flex;
    justify-content: center;
    align-items: center;
}

.send-file-container {
    background-color: #fff;
    width: 320px;
    height: 320px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}

.title {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.32);
    color: gray;
    font-size: 16px;
}

.upload {
    padding: 32px 0;
    display: flex;
    justify-content: center;
}

.btn {
    --shadow: 0px 2px 2px 0px rgb(50 127 9 / 94%);
    text-transform: capitalize;
    padding: 12px 8px;
    color: #fff;
    background-color: #6ece3b;
    border: none;
    border-radius: 6px;
    width: 150px;
    box-sizing: border-box;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0px 2px 2px 0px rgb(50 127 9 / 94%);
    cursor: pointer;
    transition: box-shadow 0.21s ease;
}

.btn:hover {
    --shadow: 0px 2px 2px 0px rgb(50 127 9 / 94%), 0px 0px 9px 2px rgb(80 195 19 / 94%);
    box-shadow: var(--shadow);
}

.upload-files {
    --width: 100px;
    --height: 80px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-50%);
    overflow: hidden;
    width: var(--width);
    height: var(--height);
    border: 1px dashed #333;
}

.content-upload {
    color: #aaa;
    font-size: 12px;
}

.content-upload.is-draggable {
    background-color: #eee;
}

.content-upload p {
    display: none;
    position: absolute;
    z-index: 5;
    word-break: break-all;
}

.content-upload input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    outline: none;
    opacity: 0;
}

.content-upload {
    display: flex;
    justify-content: center;
    align-items: center;
    /* available property -> Browser -> webkit | Firefox | Microsoft Edge | Opera */
    height: -webkit-fill-available;
    height: -moz-fill-available;
    height: -ms-fill-available;
    height: -o-fill-available;
}

/* Active fileName */

.active-fileName img {
    opacity: 0;
}

.sync, .done {
    display: none;
}

.active-fileName p {
    padding: 8px;
    font-size: 16px;
    display: block;
    pointer-events: none;
}

/* submit files */

.submit-file > :not(.sync) {
    transition: opacity 0.2s ease;
    display: none;
    opacity: 0;
}

.submit-file .sync {
    display: block;
    animation-name: rotate360;
    animation-timing-function: ease;
    animation-duration: 2.5s;
    animation-fill-mode: forwards;
    transition: all 0.2s ease;
}

@keyframes rotate360 {
    0% {
        transform: rotate(0deg);
        opacity: 0;
    }
    
    50% {
        opacity: 1;
    }
    
    100% {
        transform: rotate(360deg);
        opacity: 0;
    }
}

.submit-file .done {
    animation-name: done;
    animation-timing-function: ease;
    animation-delay: 2.5s;
    animation-duration: 0.7s;
    animation-fill-mode: both;
    transition: all 0.2s ease;
    display: block;
}

@keyframes done {
    0% {
        opacity: 0;
    }
    
    100% {
        opacity: 1;
    }

}