:root {
    color-scheme: dark;
    /* colors: */
    --light-grey-hash: repeating-linear-gradient(
        -45deg,
        rgba(73, 76, 80, 0),
        rgba(73, 76, 80, 0) 5px,
        rgba(73, 76, 80, .5) 5px,
        rgba(73, 76, 80, .5) 10px
    );
    --transparent-black-3: rgba(0, 0, 0, 0.3);
    --transparent-black-6: rgba(0, 0, 0, 0.6);
    --black: rgb(0, 0, 0);
    --lighter-black: rgb(16, 16, 16);
    --darker-grey: rgb(32, 32, 32);
    --dark-grey: rgb(32, 33, 36);
    --grey: rgb(41, 42, 45);
    --light-grey: rgb(73, 76, 80);
    --lighter-grey: rgb(132, 133, 136);
    --input-border-grey: rgb(133, 133, 133);
    --white: rgb(255, 255, 255);
    --dark-white: rgb(228, 228, 228);
    --darker-white: rgb(200, 200, 200);
    --dark-red: hsl(0, 100%, 30%);
    --red: hsl(0, 100%, 40%);
    --light-red: hsl(0, 100%, 50%);
    --lighter-red: hsl(0, 100%, 75%);
    --orange: hsl(45, 100%, 40%);
    --light-orange: hsl(45, 100%, 50%);
    --green: hsl(125, 100%, 30%);
    --light-green: hsl(125, 100%, 40%);
    --lighter-green: hsl(125, 100%, 80%);
    --yellow: hsl(60, 100%, 40%);
    --light-yellow: hsl(60, 100%, 75%);
    --darker-blue: hsl(215, 100%, 35%);
    --dark-blue: hsl(215, 100%, 50%);
    --blue: hsl(215, 100%, 60%);
    --light-blue: hsl(215, 100%, 75%);
    /* fonts: */
    --main-font: 'Work Sans', sans-serif;
}

/** Elements: */

html, body, .root, .loader {
    width: 100vw;
    height: 100vh;
    max-width: 100%;
    max-height: 100%;
    overflow: hidden;
}

body, .root {
    display: grid;
    background-color: var(--dark-grey);
    margin: 0;
    place-items: center;
    color: var(--white);
    font-family: var(--main-font);
    font-weight: 400;
    font-size: 0.9rem;
}

h2 {
    line-height: calc(2 / 1.5) !important;
}

/* button {
    --border-color: var(--light-grey);
    --background-color: var(--grey);
    --color: var(--white);
    appearance: none;
    box-sizing: content-box;
    color: var(--color);
    height: calc(2em - 8px);
    text-align: center;
    min-width: 50px;
    background-color: var(--grey);
    border: 1px solid var(--border-color);
}

button:disabled {
    --color: var(--lighter-grey);
}

button:not(:disabled) {
    cursor: pointer;
}

button:not(:disabled):hover, button:not(:disabled):focus {
    --border-color: var(--light-blue);
    --background-color: var(--darker-grey);
    outline: none;
}

button.active:not(:disabled), button:not(:disabled):active {
    --border-color: var(--white);
    --background-color: var(--black);
} */

a {
    appearance: none;
    background-color: var(--grey);
    color: var(--lighter-grey);
    cursor: pointer;
}

a:hover, a:focus {
    background-color: var(--darker-grey);
    color: var(--white);
    outline: none;
}

a.active, a:active {
    background-color: var(--black);
    color: var(--white);
}

input {
    text-align: center;
}

input[type="number"] {
    text-indent: 2ch;
}

input:focus-visible {
    border: 2px solid var(--light-blue);
    outline: none;
    border-radius: 3px;
}

input:read-only, input:disabled {
    border-color: transparent;
    outline: none;
    background: none;
    cursor: default;
}

label {
    display: grid;
    text-align: center;
    grid-auto-flow: column;
    grid-template-columns: 1fr 1fr;
    min-width: 50%;
}

/** Classes: */

.login {
    display: grid;
    place-items: center;
    gap: 1em;
}

.status-bar {
    --connection-color: var(--light-grey);
    display: grid;
    grid-auto-flow: column;
    position: fixed;
    background-color: var(--dark-grey);
    bottom: 1em;
    left: 1em;
    width: calc(100vw - 3.5em);
    padding: 0.5em 0.75em;
    border-radius: 2em;
    box-shadow: 0 0 5px var(--black);
    border: 1px solid var(--connection-color);
    overflow: hidden;
    z-index: 997;
}

.status-bar.disconnected {
    --connection-color: var(--red);
}

.status-bar.reconnecting {
    --connection-color: var(--orange);
}

.status-bar.connected {
    --connection-color: var(--green);
}

.status-bar__firefly {
    position: relative;
    background-color: var(--connection-color);
    width: 1em;
    height: 1em;
    border-radius: 1em;
}

.status-bar__firefly__disconnect-btn {
    display: grid;
    grid-auto-flow: column;
    white-space: pre;
    margin-left: 1.5rem;
    place-content: center start;
    height: 100%;
    cursor: default;
    color: var(--lighter-grey);
}

.status-bar.connected .status-bar__firefly__disconnect-btn:hover {
    text-decoration: underline
}

.status-bar.connected .status-bar__firefly__disconnect-btn {
    pointer-events: all;
    cursor: pointer;
    color: var(--white);
}

.status-bar___nav-map {
    place-self: end;
    padding-right: 0.5em;
}

.status-bar___nav-map > a {
    color: var(--white);
    background-color: transparent;
}

.hidden {
    display: none !important;
}

.authenticator {
    letter-spacing: 1ch;
}

.authenticator::placeholder {
    letter-spacing: initial;
}

.loader {
    display: grid;
    place-items: center;
    opacity: 1;
    position: fixed;
    top: 0;
    left: 0;
    background-color: var(--dark-grey);
    transition: 400ms;
    z-index: 999;
}

.loader::before {
    content: '';
    display: block;
    position: absolute;
    border: 6px solid var(--blue);
    border-radius: 50%;
    width: 14px;
    height: 14px;
}

.loader::after {
    content: '';
    display: block;
    position: absolute;
    border: 4px solid var(--lighter-black);
    border-top: 4px solid var(--blue);
    border-radius: 50%;
    width: 16px;
    height: 16px;
    animation: spin 2s linear infinite;
}

.loader--loaded {
    opacity: 0;
    pointer-events: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}