/* ============================================================
   10. FLOATING DUST MOTES – ฝุ่นทองลอย (tiny dots)
   ============================================================ */
.bp-dust-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 3;
    overflow: hidden;
}

.bp-dust {
    position: absolute;
    border-radius: 50%;
    background: rgba(245, 200, 66, 0.8);
    animation: bp-dust-drift var(--dur, 12s) var(--delay, 0s) infinite linear;
    opacity: 0;
}

.bp-dust:nth-child(1) {
    width: 5px;
    height: 5px;
    left: 10%;
    top: 80%;
    --dur: 12s;
    --delay: 0s;
}

.bp-dust:nth-child(2) {
    width: 8px;
    height: 8px;
    left: 22%;
    top: 60%;
    --dur: 15s;
    --delay: 2s;
}

.bp-dust:nth-child(3) {
    width: 10px;
    height: 10px;
    left: 40%;
    top: 70%;
    --dur: 10s;
    --delay: 4s;
}

.bp-dust:nth-child(4) {
    width: 5px;
    height: 5px;
    left: 58%;
    top: 85%;
    --dur: 13s;
    --delay: 1s;
}

.bp-dust:nth-child(5) {
    width: 8px;
    height: 8px;
    left: 72%;
    top: 65%;
    --dur: 11s;
    --delay: 3s;
}

.bp-dust:nth-child(6) {
    width: 5px;
    height: 5px;
    left: 88%;
    top: 75%;
    --dur: 14s;
    --delay: 5s;
}

.bp-dust:nth-child(7) {
    width: 8px;
    height: 8px;
    left: 35%;
    top: 50%;
    --dur: 9s;
    --delay: 2.5s;
}

.bp-dust:nth-child(8) {
    width: 10px;
    height: 10px;
    left: 65%;
    top: 90%;
    --dur: 16s;
    --delay: 0.5s;
}

@keyframes bp-dust-drift {
    0% {
        opacity: 0;
        transform: translateY(0) translateX(0);
    }

    15% {
        opacity: 0.9;
    }

    85% {
        opacity: 0.4;
    }

    100% {
        opacity: 0;
        transform: translateY(-50vh) translateX(20px);
    }
}