/* Particle effects for achievements */
.achievement-notification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-200px);
    padding: 20px 32px;
    background: rgba(0,0,0,0.95);
    border: 2px solid #FFD700;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 20px;
    z-index: 10001;
    transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.achievement-notification.show { transform: translateX(-50%) translateY(0); }
.achievement-icon { font-size: 48px; }
.achievement-name { font-weight: 700; font-size: 1.1rem; }