/* ============================================================
   PARTICLES - HIỆU ỨNG CHẤM SÁNG RƠI XUỐNG
============================================================ */

.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    opacity: 0.8;
    animation: fall linear infinite;
    box-shadow: 0 0 10px currentColor;
}

/* Màu sắc khác nhau cho các particle */
.particle.red {
    background: #ff0000;
    color: #ff0000;
}

.particle.gold {
    background: #ffb700;
    color: #ffb700;
}

.particle.orange {
    background: #ff9500;
    color: #ff9500;
}

.particle.cyan {
    background: #00ffff;
    color: #00ffff;
}

.particle.purple {
    background: #ff00ff;
    color: #ff00ff;
}

.particle.green {
    background: #00ff88;
    color: #00ff88;
}

.particle.pink {
    background: #ff1493;
    color: #ff1493;
}

.particle.blue {
    background: #0099ff;
    color: #0099ff;
}

/* Animation rơi xuống */
@keyframes fall {
    0% {
        transform: translateY(-10px) translateX(0);
        opacity: 0.8;
    }
    50% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(100vh) translateX(var(--drift, 0px));
        opacity: 0;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .particle {
        width: 6px;
        height: 6px;
        box-shadow: 0 0 8px currentColor;
    }
}