.os-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.os-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    display: none;
    z-index: 1001;
    max-width: 600px;
    width: 80%;
}

.os-popup-content {
    text-align: center;
}

.os-popup h2 {
    margin-top: 0;
    color: #fff;
}

.os-popup p {
    color: #eee;
}

.os-popup-close {
    position: absolute;
    top: 15px;
    right: 25px;
    font-size: 28px;
    cursor: pointer;
    color: #aaa;
    font-weight: bold;
}

.os-popup-close:hover {
    color: #000;
}

.cta {
    display: inline-block;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    color: white;
    padding: 12px 24px;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
    margin: 20px 0;
    transition: all 0.3s ease;
}

.cta:hover {
    background: linear-gradient(-135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
    box-shadow: 0 8px 40px 0 rgba(0, 0, 0, 0.5);
}

.cta a {
    color: #ffffff;
    text-decoration: none;
}