@font-face {
    font-family: "Akari Fallback UI";
    src: local("Segoe UI"), local("Roboto"), local("Oxygen"), local("Ubuntu"), local("Cantarell"), local("Open Sans"),
        local("Helvetica Neue"), local("Helvetica");
}

:root {
    color: var(--font-color);
    font-family: -apple-system, BlinkMacSystemFont, system-ui, "Akari Fallback UI", sans-serif, "Apple Color Emoji",
        "Segoe UI Emoji";
    background-color: var(--background-color);
    font-feature-settings: "kern" 1;
    font-kerning: normal;
    caret-color: var(--theme-color);
    overscroll-behavior-y: contain;
}

:root,
textarea,
input {
    font-variant-numeric: tabular-nums;
}

[lang]:lang(zh) {
    font-family: -apple-system, BlinkMacSystemFont, system-ui, "Akari Fallback UI", "PingFang SC", "Microsoft YaHei UI",
        "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "WenQuanYi Micro Hei", sans-serif,
        "Apple Color Emoji", "Segoe UI Emoji";
}

[lang]:lang(zh-HK) {
    font-family: -apple-system, BlinkMacSystemFont, system-ui, "Akari Fallback UI", "PingFang HK",
        "Microsoft JhengHei UI", "Microsoft JhengHei", "Source Han Sans HK", "Noto Sans CJK TC", sans-serif,
        "Apple Color Emoji", "Segoe UI Emoji";
}

[lang]:lang(zh-TW) {
    font-family: -apple-system, BlinkMacSystemFont, system-ui, "Akari Fallback UI", "PingFang TC",
        "Microsoft JhengHei UI", "Microsoft JhengHei", "Source Han Sans TW", "Noto Sans CJK TC", sans-serif,
        "Apple Color Emoji", "Segoe UI Emoji";
}

[lang]:lang(ja) {
    font-family: -apple-system, BlinkMacSystemFont, system-ui, "Akari Fallback UI", "Hiragino Kaku Gothic Pro",
        "Yu Gothic UI", "Yu Gothic", "Meiryo UI", Meiryo, "Source Han Sans JP", "Noto Sans CJK JP", sans-serif,
        "Apple Color Emoji", "Segoe UI Emoji";
}

select,
input,
textarea {
    color: inherit;
}

svg {
    fill: currentColor;
}

::selection {
    color: var(--theme-contrast-color);
    background-color: var(--theme-color);
}

@supports (-ms-ime-align: auto) and (not (position: sticky)) {
    /* In Edge 15 is not possible to use css variables in pseudo elements */
    ::selection {
        color: unset;
        background-color: unset;
    }
}

:focus {
    outline: none;
}

a {
    color: currentColor;
    text-decoration: none;
}

a,
button,
[type="submit"] {
    padding: 0 8px;
    background: 0;
    border: 0;
    cursor: default;
    appearance: none;
    user-select: none;
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.link {
    text-decoration: underline;
    cursor: pointer;
}

.link:hover {
    text-decoration-color: var(--theme-color);
}

.link:hover::after {
    position: absolute;
    margin-left: 4px;
    content: "\1F517";
}

a > * {
    pointer-events: none;
}

.button {
    padding: 8px;
    color: var(--black);
    background-color: white;
    border-radius: var(--border-radius);
    opacity: 0.8;
}

.button:hover {
    opacity: 1;
}

.glow {
    transition: text-shadow var(--transition-duration) ease;
}

.glow:hover {
    text-shadow: 0 0 4px currentColor;
}

.glow > svg {
    transition: filter var(--transition-duration) ease;
}

.glow:hover > svg {
    filter: var(--drop-shadow);
}

.ripple {
    position: relative;
    overflow: hidden;
    transform: translate3d(0, 0, 0);
}

.ripple::after {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle, #000000 10%, transparent 10%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale3d(10, 10, 1);
    opacity: 0;
    transition: transform 0.5s, opacity 1s;
    content: "";
    pointer-events: none;
}

.ripple:active::after {
    transform: scale3d(0, 0, 1);
    opacity: 0.2;
    transition: 0s;
}

.select-all {
    user-select: all;
}

.page-loading::before {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: var(--background-color);
    opacity: 0.5;
    content: "";
}

.akari-odango-loading {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 50vmin;
    height: 50vmin;
    margin: auto;
    text-align: center;
}

.start-loading {
    animation: akari-loading 2s linear infinite;
}

@keyframes akari-loading {
    from {
        transform: rotate(0deg) translateX(-2vmin) rotate(0deg);
    }

    to {
        transform: rotate(360deg) translateX(-2vmin) rotate(-360deg);
    }
}

.akari-not-found {
    flex: 1 1 auto;
    align-self: center;
    max-width: 100vw;
    max-height: 80vh;
    margin-top: auto;
    opacity: 0.2;
    filter: var(--drop-shadow);
}