.oauth-login-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin: 24px 0 18px;
}

.oauth-register-options {
    margin-top: 22px;
}

.oauth-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 52px;
    padding: 11px 18px;
    border: 1px solid #cfd8d5;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 800;
    line-height: 1.35;
    text-align: center;
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.oauth-button:hover,
.oauth-button:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(19, 51, 52, 0.12);
}

.oauth-button.is-line {
    color: #ffffff;
    background: #06c755;
    border-color: #06b94f;
}

.oauth-button.is-google {
    color: #243536;
    background: #ffffff;
    border-color: #c8d1cf;
}

.oauth-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 30px;
    height: 30px;
    border-radius: 9px;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: -0.04em;
}

.oauth-icon.is-line {
    color: #06c755;
    background: #ffffff;
}

.oauth-icon.is-google {
    color: #4285f4;
    background: #f5f7f7;
    font-family: Arial, sans-serif;
    font-size: 19px;
    letter-spacing: 0;
}

.oauth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 18px 0 22px;
    color: #667b7b;
    font-size: 14px;
    font-weight: 700;
    text-align: center;
}

.oauth-divider::before,
.oauth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: #dce3e1;
}

.oauth-divider span {
    flex: 0 1 auto;
}

.oauth-form-card {
    max-width: 700px;
}

.oauth-link-card {
    max-width: 590px;
}

.oauth-connected-notice,
.oauth-security-notice {
    display: grid;
    gap: 5px;
    margin: 20px 0;
    padding: 16px 18px;
    border: 1px solid #cddbd7;
    border-radius: 14px;
    color: #173536;
    background: #eef5f2;
    font-size: 15px;
    line-height: 1.65;
}

.oauth-connected-notice strong {
    font-size: 17px;
}

.oauth-security-notice {
    display: block;
    background: #f7f8f6;
}

input[readonly] {
    color: #475b5b;
    background: #f2f5f4;
    cursor: not-allowed;
}

@media (min-width: 620px) {
    .oauth-login-options {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .oauth-button {
        min-height: 50px;
        padding-inline: 14px;
        font-size: 15px;
    }

    .oauth-divider {
        font-size: 13px;
    }
}