/* Animated background waves */
.wave-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.1;
}

.wave {
    position: absolute;
    width: 200%;
    height: 200px;
    background: linear-gradient(45deg, #919293, #c8c9c9);
    animation: wave 10s infinite linear;
}

.wave:nth-child(1) {
    bottom: 0;
    animation-delay: 0s;
}

.wave:nth-child(2) {
    bottom: 50px;
    animation-delay: -2s;
    opacity: 0.5;
}

.wave:nth-child(3) {
    bottom: 100px;
    animation-delay: -4s;
    opacity: 0.3;
}

@keyframes wave {
    0% {
        transform: translateX(-50%) rotate(0deg);
    }

    100% {
        transform: translateX(-50%) rotate(360deg);
    }
}