:root {
    --popup-bg: linear-gradient(135deg, #1a6dd4 0%, #0ea5e9 100%);
    --popup-text: #ffffff;
    --popup-text-sm: rgba(255, 255, 255, 0.8);
    --popup-btn-bg: #ffffff;
    --popup-btn-text: #1a6dd4;
    --popup-btn-hover: #f0f0f0;
    --popup-radius: 16px;
    --popup-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --popup-close-bg: rgba(255, 255, 255, 0.2);
    --popup-close-hover: rgba(255, 255, 255, 0.35);
}

.sg-popup-overlay {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    transition: opacity 0.4s ease, transform 0.4s ease;
    pointer-events: none;
}

.sg-popup-overlay.sg-popup-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.sg-popup-box {
    background: var(--popup-bg);
    border-radius: var(--popup-radius);
    box-shadow: var(--popup-shadow);
    padding: 24px 28px;
    min-width: 260px;
    max-width: 340px;
    position: relative;
    overflow: hidden;
}

.sg-popup-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 28px;
    height: 28px;
    border: none;
    background: var(--popup-close-bg);
    color: var(--popup-text);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    line-height: 1;
    transition: background 0.2s;
    padding: 0;
}

.sg-popup-close:hover {
    background: var(--popup-close-hover);
}

.sg-popup-text {
    color: var(--popup-text);
    font-size: 22px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 6px;
    padding-right: 24px;
}

.sg-popup-sub {
    color: var(--popup-text-sm);
    font-size: 13px;
    margin-bottom: 16px;
}

.sg-popup-btn {
    display: inline-block;
    background: var(--popup-btn-bg);
    color: var(--popup-btn-text);
    font-size: 15px;
    font-weight: 700;
    padding: 12px 32px;
    border-radius: 8px;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background 0.2s, transform 0.1s;
    border: none;
    cursor: pointer;
}

.sg-popup-btn:hover {
    background: var(--popup-btn-hover);
    transform: scale(1.03);
    text-decoration: none;
}

/* Mobile: popup на всю ширину снизу */
@media (max-width: 480px) {
    .sg-popup-overlay {
        bottom: 0;
        right: 0;
        left: 0;
        transform: translateY(100%);
    }

    .sg-popup-overlay.sg-popup-visible {
        transform: translateY(0);
    }

    .sg-popup-box {
        max-width: 100%;
        border-radius: var(--popup-radius) var(--popup-radius) 0 0;
        padding: 20px 20px 24px;
        text-align: center;
    }

    .sg-popup-btn {
        width: 100%;
        text-align: center;
    }
}