:root {
    --bg: #eef3f7;
    --panel: #ffffff;
    --text: #17212b;
    --muted: #66788a;
    --line: #d7e0e8;
    --primary: #0b6f8f;
    --primary-dark: #075873;
    --bitrix: #19a9dc;
    --bitrix-dark: #138fbd;
    --danger: #b42318;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        linear-gradient(135deg, rgba(11, 111, 143, 0.14), transparent 34%),
        linear-gradient(315deg, rgba(25, 169, 220, 0.16), transparent 32%),
        var(--bg);
    color: var(--text);
    font: 16px/1.45 Arial, sans-serif;
}

.login-shell {
    width: min(920px, 100%);
    display: grid;
    grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1fr);
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: 0 22px 70px rgba(31, 45, 61, 0.16);
}

.login-aside {
    padding: 34px;
    background: #12384a;
    color: #ffffff;
}

.login-mark {
    width: max-content;
    margin-bottom: 52px;
    padding: 6px 10px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    color: rgba(255, 255, 255, 0.84);
    font-size: 13px;
    font-weight: 700;
}

.login-aside h1 {
    margin: 0 0 12px;
    font-size: 28px;
    line-height: 1.15;
}

.login-aside p {
    max-width: 340px;
    margin: 0;
    color: rgba(255, 255, 255, 0.76);
}

.login-panel {
    padding: 34px;
}

.login-panel h2 {
    margin: 0 0 18px;
    font-size: 22px;
}

.field {
    margin-top: 14px;
}

label {
    display: block;
    margin-bottom: 7px;
    color: #344657;
    font-size: 14px;
    font-weight: 700;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid #bdcbd8;
    border-radius: 6px;
    background: #fbfdff;
    color: var(--text);
    font: inherit;
}

input:focus {
    outline: 2px solid rgba(25, 169, 220, 0.24);
    border-color: var(--bitrix);
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 44px;
    margin-top: 16px;
    padding: 10px 14px;
    border: 0;
    border-radius: 6px;
    color: #ffffff;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.btn-bitrix {
    background: var(--bitrix);
}

.btn-bitrix:hover {
    background: var(--bitrix-dark);
}

.btn-primary {
    background: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 22px 0 4px;
    color: var(--muted);
    font-size: 13px;
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--line);
}

.error {
    margin: 0 0 14px;
    padding: 10px 12px;
    border: 1px solid rgba(180, 35, 24, 0.26);
    border-radius: 6px;
    background: #fff4f2;
    color: var(--danger);
}

@media (max-width: 760px) {
    body {
        padding: 16px;
    }

    .login-shell {
        grid-template-columns: 1fr;
    }

    .login-aside,
    .login-panel {
        padding: 24px;
    }

    .login-mark {
        margin-bottom: 28px;
    }
}