body {
    margin: 0;
    overflow: hidden; /* prevents scrollbars since canvas takes full screen */
    background-color: #000;
}
canvas {
    display: block;
}
#blocker {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    text-align: center;
    cursor: pointer;
    z-index: 10;
    transition: opacity 0.5s ease;
}
#instructions {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(10, 15, 20, 0.6); /* Dark liquid glass */
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 60px 80px;
    border-radius: 24px;
    box-shadow: 0 16px 40px rgba(0,0,0,0.8), inset 0 1px 0 rgba(255,255,255,0.2), inset 0 0 20px rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.15);
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
    transition: transform 0.3s ease, background 0.3s ease;
}

#instructions:hover {
    transform: translateY(-2px);
    background: rgba(20, 25, 30, 0.7);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 30px;
    padding: 12px 28px;
    background: rgba(0, 150, 255, 0.2);
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    text-decoration: none;
    border-radius: 30px;
    border: 1px solid rgba(255,255,255,0.4);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3), inset 0 2px 4px rgba(255,255,255,0.2);
    backdrop-filter: blur(8px);
    transition: all 0.2s ease;
}

.share-btn:hover {
    background: rgba(0, 150, 255, 0.4);
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 150, 255, 0.4), inset 0 2px 4px rgba(255,255,255,0.4);
}
#crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 6px;
    background-color: rgba(255,255,255,0.7);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 5;
}