/* 2. Background Animation */
body {
    background: url('/static/images/waterfall.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

/* Frutiger Aero Overlay Gradient */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0, 209, 255, 0.2), rgba(0, 59, 135, 0.4));
    backdrop-filter: blur(3px);
    z-index: -3;
    pointer-events: none;
}

/* Dew Overlay */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
    opacity: 0.3;
    z-index: -1;
    pointer-events: none;
}

.aero-bubbles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    overflow: hidden;
}

.bubble {
    position: absolute;
    bottom: -100px;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.1));
    border-radius: 50%;
    box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.5);
    animation: rise 120s infinite ease-in-out;
    /* Constant slow speed */
    will-change: transform, opacity;
}

@keyframes rise {
    0% {
        bottom: -100px;
        transform: translateX(0) scale(1);
        opacity: 0;
    }

    50% {
        opacity: 0.6;
        transform: translateX(50px) scale(1.1);
    }

    100% {
        bottom: 120vh;
        transform: translateX(-50px) scale(1.2);
        opacity: 0;
    }
}