#menu {
    position: sticky;
    display: flex;
    width: 100%;
    top: 15px;
    margin-bottom: 30px;
    margin-top: 20px;
    gap: 10px;
    align-items: center;
    justify-content: center;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    z-index: 5;
}

#filters {
    display: flex;
    width: 100%;
    top: 15px;
    align-items: center;
    justify-content: center;
    flex-grow: 1;
    z-index: 5;
    transition: filter 0.4s;
}

#filters.hide {
    filter: blur(8px);
}

#menu::before {
    position: absolute;
    height: 60px;
    top: -20px;
    left: -20px;
    right: -20px;
    padding-bottom: 50px;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;
    content: '';
    background: var(--app-color-alpha);
    backdrop-filter: blur(13px);
    -webkit-backdrop-filter: blur(13px);
    mask: linear-gradient(180deg, black 70%, transparent 100%);
    -webkit-mask: linear-gradient(180deg, black 70%, transparent 100%);
}

#menu::after {
    position: fixed;
    height: 45px;
    bottom: 0;
    left: 0px;
    right: 0px;
    padding-bottom: 0;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    content: '';
    background: var(--app-color-alpha);
    backdrop-filter: blur(13px);
    -webkit-backdrop-filter: blur(13px);
    mask: linear-gradient(0deg, black 0%, transparent 100%);
    -webkit-mask: linear-gradient(0deg, black 0%, transparent 100%);
    z-index: 10;
}

#menu #burger {
    display: flex;
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    border-radius: 8px;
    align-items: center;
    justify-content: center;
    background-color: var(--soft-white);
    color: var(--base);
    border: none;
    box-shadow: 0 0 1px 0 var(--shadow-base), 0 6px 12px 0 var(--shadow-base);
    cursor: pointer;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    z-index: 6;
    transition: filter 1s;
}

#menu #burger.blur {
    filter: blur(8px);
    pointer-events: none;
}

#menu #burger::after {
    display: inline-block;
    width: 28px;
    height: 28px;
    background-size: 28px 28px;
    content: '';
    background-image: url(../img/burger.svg);
    filter: var(--svg-filter);
    transition: transform .5s ease;
}

#menu #burger.on::after {
    background-image: url(../img/close.svg);
    filter: var(--svg-filter);
    transform: rotate(180deg);
}

#menu #burgerContent {
    position: absolute;
    display: inline-block;
    width: auto;
    height: 50px;
    right: 0px;
    left: calc(100% - 50px);
    z-index: 5;
    transition: all 0.5s ease;
}

#menu #burgerContent.show {
    right: 60px;
    left: 0px;
}

#burgerButtons {
    position: absolute;
    width: 100%;
    height: 100%;
    margin-top: 10px;
}

.burgerButton {
    position: absolute;
    width: 50px;
    height: 50px;
    top: 0px;
    right: 0px;
    border: none;
    cursor: pointer;
    background-color: var(--soft-white);
    color: var(--base);
    box-shadow: 0 0 1px 0 var(--shadow-base), 0 6px 12px 0 var(--shadow-base);
    border-radius: 8px;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    z-index: 5;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    transform: translateX(80px)
}

.burgerButton.show {
    transform: translateX(0px);
}

.burgerButton:nth-child(1)            { top: 60px;  }
.burgerButton:nth-child(2)            { top: 120px; }
.burgerButton:nth-child(3)            { top: 180px; }
.burgerButton:nth-child(4)            { top: 240px; }

.burgerButton:nth-child(1).show       { transition-delay: 0s;   }
.burgerButton:nth-child(2).show       { transition-delay: 0.1s; }
.burgerButton:nth-child(3).show       { transition-delay: 0.2s; }
.burgerButton:nth-child(4).show       { transition-delay: 0.3s; }

.burgerButton:nth-child(1):not(.show) { transition-delay: 0.3s; }
.burgerButton:nth-child(2):not(.show) { transition-delay: 0.2s; }
.burgerButton:nth-child(3):not(.show) { transition-delay: 0.1s  }
.burgerButton:nth-child(4):not(.show) { transition-delay: 0s;   }

.burgerButton::after {
    display: inline-block;
    width: 28px;
    height: 28px;
    background-size: 28px 28px;
    background-repeat: no-repeat;
    content: '';
    transition: transform .2s ease;
    transform: rotate(0deg);
}

#refreshBtn::after {
    background-image: url(../img/refresh.svg);
    filter: var(--svg-filter);
    transition: transform .4s ease, opacity 0.6s ease, filter 0.6s ease;
}

#refreshBtn.cooldown {
    overflow: hidden;
    cursor: not-allowed;
}

#refreshBtn.cooldown::after {
    opacity: 0.3;
    filter: grayscale(1)
}

#refreshBtn.cooldown::before {
    --duration: 30s;
    position: absolute;
    width: 100%;
    height: 100%;
    bottom: 0;
    left: 0;
    content: '';
    background: var(--cooldown);
    pointer-events: none;
    z-index: 0;
    animation: fillCooldown var(--duration) linear forwards;
    transform: translateY(0%);
    transform-origin: bottom;
}

@keyframes fillCooldown {
    to {
        transform: translateY(100%);
    }
}

#mapBtn::after {
    background-image: url(../img/map.svg);
    filter: var(--svg-filter);
}

#settingsBtn::after {
    background-image: url(../img/settings.svg);
    filter: var(--svg-filter);
}

#infoBtn::after {
    background-image: url(../img/info.svg);
    filter: var(--svg-filter);
}

#refreshBtn:active:not(.cooldown)::after {
    transition: 0s;
    transform: rotate(-360deg);
}


#mapBtn:active::after,
#settingsBtn:active::after,
#infoBtn:active::after {
    transition: transform 0.2s ease;
    transform: scale(1.4);
}