#splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    background-color: #1a1a1a; /* dark charcoal */
    overflow: hidden;
    cursor: crosshair; /* technical feel */
}

#murmuration-canvas {
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

#splash-screen .minimal-header {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #eaeaea;
    font-family: 'Courier New', Courier, monospace; /* Stark, minimalist monospace */
    pointer-events: none;
    user-select: none;
    z-index: 2;
}

#splash-screen .minimal-header h1 {
    font-size: 3rem;
    font-weight: 400;
    letter-spacing: 0.5rem;
    margin: 0 0 1rem 0;
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

#splash-screen .minimal-header p {
    font-size: 1rem;
    letter-spacing: 0.2rem;
    opacity: 0.7;
    margin: 0;
}

#mute-btn {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    background: transparent;
    border: none; /* Removed the square border */
    color: rgba(255, 255, 255, 0.4); /* Very subtle by default */
    width: 32px;
    height: 32px;
    cursor: pointer;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    padding: 0;
}

#mute-btn:hover {
    color: rgba(255, 255, 255, 0.9); /* Brightens on hover */
    transform: scale(1.05);
}

#mute-btn svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    stroke-width: 1.5; /* Thinner, more elegant lines */
}