#introOverlay {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    z-index: 2147483647;
    background-color: black;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 20px;
    box-sizing: border-box;
}

#spiralCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

#introTitle {
    position: absolute;
    z-index: 10000;
    opacity: 0;
    transform: translateY(20px);
    transition: all 2s ease-out;
    color: white;
    text-align: center;
    pointer-events: none;
}

#introTitle.visible {
    opacity: 1;
    transform: translateY(0);
}

.intro-subtitle {
    display: block;
    font-size: 0.9rem;
    letter-spacing: 0.6em;
    opacity: 0.6;
    font-family: 'Chillax', sans-serif;
    animation: pulse 3s infinite;
}

.site-title-intro {
    display: block;
    margin-bottom: 0.5rem;
    font-size: clamp(1.2rem, 3.5vw, 2.2rem);
    font-weight: 600;
    letter-spacing: 0.5em;
    font-family: 'Chillax', sans-serif;
    color: #ffffff;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

body.overflow-hidden {
    overflow: hidden;
}