body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.logo {
    height: 55px;
    margin-right: 20px;
    border-radius: 15px;
}

.site-title {
    font-size: 26px;
    font-weight: bold;
    color: hsl(0, 0%, 20%);
    line-height: 1;
    margin-top: 3px;
    user-select: none; /* Запрещает выделение текста */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.main-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.auth-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 450px;
    padding: 0 20px;
}

.auth-description {
    font-size: 16px;
    color: hsl(0, 0%, 50%);
    margin-bottom: 24px;
    line-height: 1.5;
}

.tg-auth-btn {
    background-color: hsl(210, 83%, 56%);
    color: hsl(0, 0%, 100%);
    border: none;
    border-radius: 50px;
    padding: 14px 28px;
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.tg-auth-btn:hover {
    background-color: hsl(210, 83%, 60%);
    box-shadow: 0 6px 16px hsla(210, 83%, 56%, 0.4);
}

.tg-auth-btn:active {
    transform: scale(0.97);
}