@import url('https://fonts.googleapis.com/css?family=Roboto');

* { box-sizing: border-box; }

:root {
    --bg: #F5F5F6;
/*    --primary: rgba(3,169,244,0.5);*/
    --primary: rgba(0,0,0,0.03);
/*  --secondary: #0055FF; */
    --secondary: #00aaff;
    --icon-color: white;
}

svg {
    width: 1em;
}

footer {
    /* position: absolute; */
	position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    padding: 1.2em 0.7em;
    user-select: none;
    /*z-index: -10;*/
}

.closed ~ .footer-bg::after {
    width: 70px;
}
.footer-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.footer-bg::after {
        content: '';
        position: absolute;
        left: 50%; 
        top: 0px;
        transform: translate(-50%, -85%);
        border-radius: 50px;
        width: 390px; /* メニュー表示時のバックグラウンドの枠サイズ */
        height: 150px;
        box-shadow: 0px 0px 0px 2000px var(--primary);
        transition: width 0.3s;
}

.add-menu {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translate(-50%, -70%);
    background-color: var(--secondary);
    width: 350px; /* メニュー表示時のサイズ */
    height: 50px;
    border-radius: 99999px;
    
    transition: width 0.3s;
}

footer svg {
    width: 30px;
    cursor: pointer;
    fill: var(--icon-color);
}

.closed .add-btn:not(.open-close) {
    transform-origin: top left;
    transform: scale(0) translate(-50%, -50%);
}
.closed .open-close {
    transform: translate(-50%, -50%) rotate(0deg);
}
.add-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transition: 0.3s;
}
.add-convenience {
    transform: scale(1) translate(-420%, -50%);
}

.add-extension {
    transform: scale(1) translate(-300%, -50%);
}

.add-replace {
    transform: scale(1) translate(-175%, -50%);
}

.open-close {
    transform: translate(-50%, -50%) rotate(45deg);
}

.add-info {
    transform: scale(1) translate(75%, -50%);
}

.add-detail {
    transform: scale(1) translate(200%, -50%);
}

.add-illustration {
    transform: scale(1) translate(310%, -50%);
}

.add-help {
    transform: scale(1) translate(310%, -50%);
}

.add-menu.closed {
    width: 50px;
}

.footer-right {
    float: right;
}