:root {
    color-scheme: dark;
}

/* Reset & base */
* {
    box-sizing: border-box;
}
html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
    background: #0b0f19; /* deep space */
    color: #e6e9ef;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial,
        "Apple Color Emoji", "Segoe UI Emoji";
    overflow: hidden; /* lock scroll; keeps video centered */
}

/* Star canvas sits behind content */
.bg {
    position: fixed;
    inset: 0;
    z-index: 0;
}
canvas.stars {
    width: 100%;
    height: 100%;
    display: block;
}

/* Subtle vignette for depth */
.vignette {
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(
        circle at 50% 40%,
        rgba(0, 0, 0, 0) 0%,
        rgba(0, 0, 0, 0.25) 60%,
        rgba(0, 0, 0, 0.6) 100%
    );
    z-index: 1;
}

/* Centered content */
.center {
    position: relative;
    z-index: 2;
    /* Use dynamic viewport height to avoid mobile URL bar issues */
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: clamp(12px, 4vw, 32px);
}

/* Responsive, big YouTube embed */
.video-wrap {
    width: min(100%, 1200px);
    aspect-ratio: 16 / 9;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6),
        0 0 1px rgba(255, 255, 255, 0.08) inset;
    outline: 1px solid rgba(255, 255, 255, 0.06);
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.04),
        rgba(255, 255, 255, 0.01)
    );
    backdrop-filter: blur(2px);
}

.video-wrap iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}

/* Optional small title badge */
.badge {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    padding: 8px 12px;
    font-size: 14px;
    letter-spacing: 0.02em;
    color: #c8d0e0;
    background: rgba(20, 24, 36, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    backdrop-filter: blur(6px);
    user-select: none;
}