.save-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 20000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: Inter, 'Segoe UI', Arial, sans-serif;
    padding: 20px;
    box-sizing: border-box;
    animation: 0.4s cubic-bezier(0.16, 1, 0.3, 1) fadeIn;
}

.save-popup-container {
    background: rgba(20, 20, 20, 0.8);
    border-radius: 28px;
    width: 100%;
    max-width: 420px;
    padding: 36px 32px;
    border: 1px solid rgba(124, 92, 252, 0.2);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 40px rgba(124, 92, 252, 0.15);
    animation: 0.5s cubic-bezier(0.16, 1, 0.3, 1) slideUp;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Subtle top glow */
.save-popup-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 3px;
    background: #7c5cfc;
    box-shadow: 0 0 20px 4px rgba(124, 92, 252, 0.5);
    border-radius: 0 0 4px 4px;
}

.save-popup-title {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff, #dcd4ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

.save-popup-description {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    margin-bottom: 28px;
    line-height: 1.6;
    font-weight: 500;
}

.save-popup-features {
    text-align: left;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 18px;
    padding: 20px 24px;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.save-popup-features p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    margin: 12px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.save-popup-features p::before {
    content: "✓";
    color: #7c5cfc;
    font-weight: 900;
    font-size: 1.1rem;
    text-shadow: 0 0 10px rgba(124, 92, 252, 0.5);
}

.save-popup-warning {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    margin-top: 12px;
    line-height: 1.5;
}

.save-popup-warning:last-of-type {
    margin-top: 12px;
    color: #7c5cfc;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.7rem;
}

@keyframes fadeIn {
    from { opacity: 0; backdrop-filter: blur(0px); }
    to { opacity: 1; backdrop-filter: blur(16px); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.save-popup-loader {
    display: inline-block;
    width: 28px;
    height: 28px;
    border: 3px solid rgba(124, 92, 252, 0.2);
    border-top-color: #7c5cfc;
    border-radius: 50%;
    animation: 0.8s cubic-bezier(0.5, 0.1, 0.4, 0.9) infinite spin;
    margin: 20px auto 0;
    box-shadow: 0 0 15px rgba(124, 92, 252, 0.3);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 480px) {
    .save-popup-container {
        padding: 28px 24px;
        max-width: 340px;
    }
    .save-popup-title {
        font-size: 1.5rem;
    }
    .save-popup-features {
        padding: 16px 20px;
    }
    .save-popup-features p {
        font-size: 0.85rem;
    }
}