.install-app-btn {
    position: fixed;
    right: clamp(12px, 3vw, 24px);
    bottom: clamp(12px, 3vw, 24px);
    z-index: 1100;
    border: 0;
    border-radius: 999px;
    padding: 12px 18px;
    min-height: 46px;
    font-family: "Sora", "Trebuchet MS", sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #ffffff;
    background: linear-gradient(135deg, #1f67cc, #2f7fe8);
    box-shadow: 0 12px 24px rgba(25, 85, 166, 0.3);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.site-footer {
    gap: 10px;
    flex-wrap: wrap;
}

.share-app-btn {
    position: static;
    z-index: auto;
    border: 1px solid rgba(102, 160, 235, 0.35);
    border-radius: 999px;
    padding: 10px 14px;
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: "Sora", "Trebuchet MS", sans-serif;
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #1a4e86;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 8px 18px rgba(56, 113, 190, 0.2);
    backdrop-filter: blur(8px);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.share-app-icon {
    width: 22px;
    height: 22px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(74, 147, 242, 0.22), rgba(31, 103, 204, 0.18));
}

.share-app-icon svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
}

.install-app-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(25, 85, 166, 0.35);
}

.share-app-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 20px rgba(56, 113, 190, 0.25);
}

.install-app-btn:active {
    transform: translateY(0);
}

.share-app-btn:active {
    transform: translateY(0);
}

.install-app-btn:focus-visible {
    outline: 3px solid #0f3a6d;
    outline-offset: 2px;
}

.share-app-btn:focus-visible {
    outline: 3px solid #0f3a6d;
    outline-offset: 2px;
}

.install-app-btn[data-state="pending"] {
    opacity: 0.88;
    cursor: wait;
}

.install-app-btn[data-state="installed"] {
    background: linear-gradient(135deg, #1f9966, #30b579);
    box-shadow: 0 12px 24px rgba(25, 135, 84, 0.28);
    cursor: default;
}

.share-app-btn[data-state="pending"] {
    opacity: 0.88;
    cursor: wait;
}

.share-app-btn[data-state="pending"] .share-app-icon {
    background: linear-gradient(135deg, rgba(240, 141, 44, 0.25), rgba(217, 108, 23, 0.2));
}

@media (max-width: 760px) {
    .install-app-btn {
        right: 12px;
        left: 12px;
        bottom: 12px;
        width: calc(100% - 24px);
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    .install-app-btn,
    .share-app-btn {
        transition: none;
    }

    .install-app-btn:hover,
    .install-app-btn:active,
    .share-app-btn:hover,
    .share-app-btn:active {
        transform: none;
    }
}