@font-face {
    font-display: swap;
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 400;
    src: url('/files/roboto-v48-cyrillic_latin-regular.woff2?c=1756939671322') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

@font-face {
    font-display: swap;
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 700;
    src: url('/files/roboto-v48-cyrillic_latin-700.woff2?c=1756939671322') format('woff2'); /* Chrome 36+, Opera 23+, Firefox 39+, Safari 12+, iOS 10+ */
}

:root {
    --background-color: #FFF;
    --color: #212121;
    --group-background-color: rgba(0, 0, 0, 0.05);
    --input-background-color: #dedede;
    --label-color: #444;
    --main-color: #3a84ff;
    --outline-width: 2px;
    --outline-offset: 2px;
}

* {
    box-sizing: border-box;
    font: inherit;
    margin: 0;
}

body {
    background-color: var(--background-color);
    color: var(--color);
    font-family: 'Roboto', sans-serif;
    line-height: 1.5;
}

button {
    background: var(--main-color);
    border: solid var(--outline-width) var(--main-color);
    border-radius: 4px;
    color: #FFF;
    cursor: pointer;
    padding: 8px 16px;
    transition: .1s;
}

button:hover {
    outline: solid var(--outline-width) var(--main-color);
    outline-offset: var(--outline-offset);
}

button:focus-visible {
    outline: solid var(--outline-width) var(--main-color);
    outline-offset: var(--outline-offset);
}

button:active {
    transform: scale(0.95); /* Легкое "вдавливание" для обратной связи */
}

.fs {
    min-height: 100vh;
    padding: 1rem;
}

.flex {
    align-items: center;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    text-align: center;
    width: 100%;
}

.group {
    background-color: var(--group-background-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow: hidden;
    padding: 4px;
}

.group .row, .row {
    background-color: var(--background-color);
    padding: 4px;
    width: 100%;
}

.group .row:first-child {
    border-radius: 6px 6px 0 0;
}

.group .row:last-child {
    border-radius: 0 0 6px 6px;
}

h1 {
    color: var(--color);
    font-size: 3rem;
    font-weight: 700;
}

.hidden {
    display: none;
}

hr {
    border: 0;
    border-bottom: 4px solid var(--group-background-color);
    margin: 1rem 0;
    width: 100%;
}

label {
    color: var(--label-color);
    display: block;
    font-size: 13px;
    font-weight: 700;
    line-height: 1;
    margin: 0 0 6px;
    text-transform: uppercase;
}

input {
    background-color: var(--input-background-color);
    border: solid var(--outline-width) var(--input-background-color);
    border-radius: 4px;
    overflow: hidden;
    padding: 8px 14px;
    transition: .1s;
    width: 100%;
}

.form select:focus, .form input[type="date"]:focus, .form input[type="text"]:focus, .form input[type="number"]:focus, .form input[type="email"]:focus, .form input[type="password"]:focus, .form input[type="datetime-local"]:focus, .form textarea:focus {
    background: #fff;
    border: solid var(--outline-width) var(--main-color);
    margin: 0;
    outline: none;
}