* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #000;
}

.background-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    object-fit: contain;
    object-position: center center;
    z-index: 1;
}

.logo {
    position: fixed;
    top: 2rem;
    left: 2rem;
    height: 1.2rem;
    width: auto;
    filter: brightness(0) invert(1);
    z-index: 2;
    pointer-events: none;
    user-select: none;
}

.glass-card {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 3;
    width: min(22rem, calc(100vw - 4rem));
    padding: 1.5rem 1.75rem 1.5rem 1.5rem;
    color: #fff;
    border-radius: 1.25rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.18) 0%, rgba(255, 255, 255, 0.06) 100%);
    border: 1px solid rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(22px) saturate(160%);
    -webkit-backdrop-filter: blur(22px) saturate(160%);
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.25),
        inset 0 -1px 0 rgba(255, 255, 255, 0.06);
    overflow: hidden;
    transform-origin: top right;
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.glass-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background:
        radial-gradient(120% 80% at 0% 0%, rgba(255, 255, 255, 0.28) 0%, rgba(255, 255, 255, 0) 50%),
        radial-gradient(80% 60% at 100% 100%, rgba(255, 255, 255, 0.10) 0%, rgba(255, 255, 255, 0) 60%);
    mix-blend-mode: screen;
}

.glass-card.is-hidden {
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
    pointer-events: none;
}

.glass-card__heading {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin: 0 0 0.6rem;
    color: rgba(255, 255, 255, 0.7);
}

.glass-card__body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
    color: rgba(255, 255, 255, 0.95);
}

.glass-card__close {
    position: absolute;
    top: 0.6rem;
    right: 0.6rem;
    width: 1.6rem;
    height: 1.6rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.glass-card__close:hover {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
    transform: scale(1.05);
}

.glass-card__close:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 2px;
}

.glass-card__close svg {
    width: 0.7rem;
    height: 0.7rem;
}

@media (max-width: 768px) {
    html, body {
        height: auto;
        min-height: 100%;
        overflow-x: hidden;
        overflow-y: auto;
    }

    body {
        display: flex;
        flex-direction: column;
        justify-content: center;
        min-height: 100dvh;
    }

    .background-video {
        position: relative;
        width: 100%;
        height: auto;
        flex: 0 0 auto;
        transform: scale(1.3);
        transform-origin: center;
    }

    .logo {
        top: 1.25rem;
        left: 1.25rem;
        height: 0.9rem;
    }

    .glass-card {
        position: fixed;
        top: auto;
        right: 1rem;
        left: 1rem;
        bottom: 1.5rem;
        width: auto;
        margin: 0;
        padding: 1.25rem 1.5rem 1.25rem 1.25rem;
        transform-origin: center bottom;
    }
}