.ika-install-btn {
    position: fixed;
    right: 15px;
    bottom: calc(100px + env(safe-area-inset-bottom, 0px));
    z-index: 99998;
    display: none;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.ika-install-btn.is-visible {
    display: flex;
}

.ika-install-btn__trigger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    border: none;
    border-radius: 999px;
    background: var(--ika-navy, #172957);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    box-shadow: 0 12px 24px rgba(23, 41, 87, 0.28);
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.ika-install-btn__trigger:hover,
.ika-install-btn__trigger:focus-visible {
    background: var(--ika-teal-dark, #15958d);
    transform: translateY(-2px);
    box-shadow: 0 16px 28px rgba(23, 41, 87, 0.32);
}

.ika-install-btn__trigger svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.ika-install-btn__tip {
    max-width: 260px;
    padding: 14px 16px;
    border-radius: 14px;
    background: #fff;
    color: var(--ika-ink, #15213b);
    font-size: 13px;
    line-height: 1.5;
    box-shadow: 0 16px 32px rgba(15, 29, 66, 0.18);
    border: 1px solid var(--ika-border, #dfe7eb);
    position: relative;
}

.ika-install-btn__tip strong {
    color: var(--ika-navy, #172957);
}

.ika-install-btn__tip-close {
    position: absolute;
    top: 4px;
    right: 6px;
    border: none;
    background: transparent;
    font-size: 18px;
    line-height: 1;
    color: var(--ika-muted, #667085);
    cursor: pointer;
    padding: 4px;
}

@media (max-width: 480px) {
    .ika-install-btn {
        right: 12px;
        bottom: calc(90px + env(safe-area-inset-bottom, 0px));
    }

    .ika-install-btn__trigger {
        padding: 12px 16px;
        font-size: 13px;
    }
}