.pwa-install-widget {
    position: relative;
    display: inline-block;
    max-width: 100%;
}

.pwa-install-popover[hidden] {
    display: none !important;
}

.pwa-install-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;

    width: var(--pwa-button-width, auto);
    max-width: 100%;
    padding: var(--pwa-button-padding, 12px 24px);

    background-color: var(--pwa-button-background, #2563eb);
    color: var(--pwa-button-color, #ffffff);

    font-family: inherit;
    font-size: var(--pwa-button-font-size, 16px);
    font-weight: var(--pwa-button-font-weight, 600);
    line-height: 1.2;
    text-align: center;

    border-style: solid;
    border-width: var(--pwa-button-border-width, 0);
    border-color: var(--pwa-button-border-color, transparent);
    border-radius: var(--pwa-button-border-radius, 8px);

    cursor: pointer;
    appearance: none;
    text-decoration: none;

    transition:
        transform 0.15s ease,
        opacity 0.15s ease,
        filter 0.15s ease,
        box-shadow 0.15s ease;
}

.pwa-install-button:hover {
    filter: brightness(0.9);
    transform: translateY(-1px);
}

.pwa-install-button:active {
    transform: translateY(0);
}

.pwa-install-button:focus-visible {
    outline: 3px solid currentColor;
    outline-offset: 3px;
}

.pwa-install-button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
}

.pwa-install-popover {
    position: absolute;
    z-index: 99999;
    left: 50%;
    bottom: calc(100% + 14px);
    width: min(320px, calc(100vw - 32px));
    padding: 18px 42px 18px 18px;

    background: #ffffff;
    color: #111827;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);

    font-size: 14px;
    line-height: 1.5;

    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translate(-50%, 8px);

    transition:
        opacity 0.18s ease,
        visibility 0.18s ease,
        transform 0.18s ease;
}

.pwa-install-popover.is-visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0);
}

.pwa-install-arrow {
    position: absolute;
    left: 50%;
    bottom: -8px;
    width: 16px;
    height: 16px;
    background: #ffffff;
    border-right: 1px solid #d1d5db;
    border-bottom: 1px solid #d1d5db;
    transform: translateX(-50%) rotate(45deg);
}

.pwa-install-close {
    position: absolute;
    top: 6px;
    right: 8px;
    width: 30px;
    height: 30px;
    padding: 0;

    background: transparent;
    color: #4b5563;
    border: 0;
    border-radius: 50%;

    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}

.pwa-install-close:hover,
.pwa-install-close:focus-visible {
    background: #f3f4f6;
    color: #111827;
}

.pwa-install-content {
    position: relative;
    z-index: 1;
}

@media (max-width: 480px) {
    .pwa-install-popover {
        position: fixed;
        right: 16px;
        bottom: 24px;
        left: 16px;
        width: auto;
        transform: translateY(8px);
    }

    .pwa-install-popover.is-visible {
        transform: translateY(0);
    }

    .pwa-install-arrow {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .pwa-install-button,
    .pwa-install-popover {
        transition: none;
    }
}