/* =============== 登录保护遮罩层 =============== */
.login-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 80px;
    z-index: 1000;
    border-radius: var(--border-radius);
    min-height: 400px;
}

.login-overlay.hidden {
    display: none;
}

.login-overlay-content {
    text-align: center;
    padding: 40px 60px;
    max-width: 620px;
    width: 100%;
}

.login-overlay-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.login-overlay-content h3 {
    font-size: 22px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.login-overlay-content p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
    white-space: nowrap;
}

.login-overlay-content .btn {
    min-width: 160px;
}