@property --pwa-neon-angle {
    syntax: "<angle>";
    inherits: false;
    initial-value: 20deg;
}

.pwa-install {
    --pwa-cyan: #59dff4;
    --pwa-violet: #a77bf3;
    --pwa-pink: #f472b6;
    --pwa-lime: #96e86f;
    position: fixed;
    z-index: 90;
    left: clamp(14px, 2.5vw, 34px);
    bottom: max(88px, calc(env(safe-area-inset-bottom) + 76px));
    display: grid;
    grid-template:
        "mark copy close" auto
        "mark action action" auto
        / 48px minmax(0, 1fr) 40px;
    align-items: center;
    gap: 11px 13px;
    width: min(430px, calc(100vw - 28px));
    padding: 15px;
    border: 1px solid transparent;
    border-radius: 8px;
    background:
        linear-gradient(color-mix(in srgb, var(--surface), transparent 2%), color-mix(in srgb, var(--surface), transparent 2%)) padding-box,
        conic-gradient(
            from var(--pwa-neon-angle),
            var(--pwa-cyan),
            var(--pwa-violet),
            var(--pwa-pink),
            var(--pwa-lime),
            var(--pwa-cyan)
        ) border-box;
    box-shadow:
        0 18px 46px rgba(0, 0, 0, .28),
        0 0 18px color-mix(in srgb, var(--pwa-cyan), transparent 88%);
    color: var(--text);
    isolation: isolate;
    backdrop-filter: blur(16px);
    animation:
        pwa-neon-border 22s linear infinite,
        pwa-neon-glow 22s ease-in-out infinite;
}

.pwa-install::before {
    content: "";
    position: absolute;
    inset: 8px auto 8px 0;
    width: 2px;
    border-radius: 999px;
    background: linear-gradient(var(--pwa-cyan), var(--pwa-violet), var(--pwa-pink));
    opacity: .72;
}

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

.pwa-install__mark {
    grid-area: mark;
    display: grid;
    place-items: center;
    align-self: start;
    width: 48px;
    height: 48px;
    border: 1px solid color-mix(in srgb, var(--pwa-cyan), transparent 48%);
    border-radius: 8px;
    background: color-mix(in srgb, var(--surface-2), #10140c 34%);
    box-shadow: inset 0 0 18px color-mix(in srgb, var(--pwa-violet), transparent 90%);
    overflow: hidden;
}

.pwa-install__mark img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pwa-install__copy {
    grid-area: copy;
    display: grid;
    gap: 5px;
    min-width: 0;
    padding-right: 2px;
}

.pwa-install__copy strong {
    font: 800 1rem/1.25 Inter, system-ui, sans-serif;
    letter-spacing: 0;
}

.pwa-install__copy span {
    color: var(--muted);
    font-size: .76rem;
    line-height: 1.45;
}

.pwa-install__action {
    grid-area: action;
    min-height: 48px;
    width: 100%;
    padding: 0 17px;
    border: 1px solid color-mix(in srgb, var(--text), transparent 72%);
    border-radius: 6px;
    background: var(--text);
    box-shadow: 0 8px 20px rgba(0, 0, 0, .16);
    color: var(--surface);
    font-size: .76rem;
    font-weight: 850;
    cursor: pointer;
    touch-action: manipulation;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.pwa-install__action:hover {
    transform: translateY(-1px);
    border-color: var(--pwa-cyan);
    box-shadow:
        0 10px 24px rgba(0, 0, 0, .2),
        0 0 14px color-mix(in srgb, var(--pwa-cyan), transparent 84%);
}

.pwa-install__action:focus-visible,
.pwa-install__close:focus-visible {
    outline: 2px solid var(--pwa-cyan);
    outline-offset: 3px;
}

.pwa-install__close {
    grid-area: close;
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid color-mix(in srgb, var(--border), transparent 18%);
    border-radius: 50%;
    background: color-mix(in srgb, var(--surface-2), transparent 18%);
    color: var(--muted);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    touch-action: manipulation;
    transition: border-color .18s ease, color .18s ease, background-color .18s ease;
}

.pwa-install__close:hover {
    border-color: color-mix(in srgb, var(--pwa-pink), transparent 38%);
    background: var(--surface-2);
    color: var(--text);
}

@keyframes pwa-neon-border {
    to { --pwa-neon-angle: 380deg; }
}

@keyframes pwa-neon-glow {
    0%, 100% {
        box-shadow:
            0 18px 46px rgba(0, 0, 0, .28),
            0 0 18px color-mix(in srgb, var(--pwa-cyan), transparent 88%);
    }
    33% {
        box-shadow:
            0 18px 46px rgba(0, 0, 0, .28),
            0 0 18px color-mix(in srgb, var(--pwa-violet), transparent 88%);
    }
    66% {
        box-shadow:
            0 18px 46px rgba(0, 0, 0, .28),
            0 0 18px color-mix(in srgb, var(--pwa-pink), transparent 89%);
    }
}

@media (max-width: 640px) {
    .pwa-install {
        right: max(10px, env(safe-area-inset-right));
        left: max(10px, env(safe-area-inset-left));
        bottom: max(78px, calc(env(safe-area-inset-bottom) + 70px));
        grid-template:
            "mark copy close" auto
            "action action action" auto
            / 44px minmax(0, 1fr) 40px;
        gap: 10px 11px;
        width: auto;
        padding: 12px;
    }

    .pwa-install__mark {
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }

    .pwa-install__copy strong {
        font-size: .92rem;
    }

    .pwa-install__copy span {
        font-size: .72rem;
        line-height: 1.4;
    }
}

@media (max-width: 360px) {
    .pwa-install {
        grid-template:
            "copy close" auto
            "action action" auto
            / minmax(0, 1fr) 40px;
    }

    .pwa-install__mark {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .pwa-install {
        animation: none;
    }

    .pwa-install__action,
    .pwa-install__close {
        transition: none;
    }
}