/* Fade-in animation */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Wave background animations */
.wave-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: linear-gradient(45deg, rgba(155, 34, 66, 0.1), rgba(232, 76, 61, 0.1));
    border-radius: 50%;
    animation: wave 20s infinite linear;
}

.wave-1 {
    animation-delay: 0s;
    opacity: 0.3;
}

.wave-2 {
    animation-delay: -5s;
    opacity: 0.2;
}

.wave-3 {
    animation-delay: -10s;
    opacity: 0.1;
}

@keyframes wave {
    0% {
        transform: translateX(-50%) translateY(0) rotate(0deg);
    }
    50% {
        transform: translateX(-50%) translateY(-20px) rotate(180deg);
    }
    100% {
        transform: translateX(-50%) translateY(0) rotate(360deg);
    }
}

/* Heartbeat footer animation */
@keyframes heartbeat-footer {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Intersection Observer for fade-in */
@media (prefers-reduced-motion: no-preference) {
    .fade-in {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    }
    
    .fade-in.visible {
        opacity: 1;
        transform: translateY(0);
    }
}