/* Richer Background */
.hearts-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    /* --- MODIFIED: Placed behind content, but allows clicks to pass through --- */
    z-index: -1; 
    pointer-events: none;
    background: linear-gradient(135deg, #fde2e4, #f8cdda);
}

.hearts-container::before,
.hearts-container::after {
    content: '💖';
    position: absolute;
    font-size: 30vw;
    opacity: 0.1;
    filter: blur(5px); 
    z-index: -1;
}
.hearts-container::before {
    top: -10vw;
    left: -10vw;
}
.hearts-container::after {
    bottom: -10vw;
    right: -10vw;
    transform: rotate(45deg);
}

.heart {
    position: absolute;
    top: -10vh;
    font-size: 20px;
    opacity: 0;
    animation: fall 10s infinite linear;
    /* --- MODIFIED: Re-enables clicks specifically for hearts --- */
    pointer-events: auto;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    width: 60px;
    height: 60px;
    display: grid;
    place-items: center;
}

@keyframes fall {
    0% { top: -10vh; opacity: 1; transform: rotate(0deg); }
    100% { top: 110vh; opacity: 1; transform: rotate(720deg); }
}

.particle {
    position: fixed; /* Use fixed positioning to appear relative to the viewport */
    font-size: 10px;
    animation: explode 1s forwards;
    pointer-events: none; /* Particles themselves are not clickable */
    z-index: 999; /* Ensure particles appear on top of everything */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

@keyframes explode {
    0% {
        opacity: 1;
        transform: translate(0, 0) rotate(0deg);
    }
    100% {
        opacity: 0;
        transform: translate(var(--x), var(--y)) rotate(720deg);
    }
}