.shuffle-page {
    width: min(90%, 900px);
    margin-inline: auto;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.shuffle-page h1 {
    margin-bottom: 0;
}

.shuffle-button {
    border: 0;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
}

.shuffle-button:disabled {
    cursor: wait;
    opacity: 0.6;
}

.wheel-wrap {
    position: relative;
    width: 180px;
    height: 180px;
}

.shuffle-wheel {
    width: 100%;
    height: 100%;
    border: 8px solid #e0e0e0;
    border-radius: 50%;
    background: conic-gradient(#ac2222 0 45deg, #e0e0e0 45deg 90deg, #2c3e50 90deg 135deg, #ac2222 135deg 180deg, #e0e0e0 180deg 225deg, #2c3e50 225deg 270deg, #ac2222 270deg 315deg, #e0e0e0 315deg);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
}

.shuffle-wheel.is-spinning {
    animation: spin-wheel 2.2s cubic-bezier(0.15, 0.85, 0.25, 1) forwards;
}

.wheel-pointer {
    position: absolute;
    top: -0.8rem;
    left: 50%;
    color: #ffffff;
    font-size: 1.8rem;
    transform: translateX(-50%);
}

@keyframes spin-wheel {
    to { transform: rotate(1800deg); }
}

.understand-link {
    margin-bottom: 0.5rem;
}

.understand-link[hidden] {
    display: none;
}

.video-title {
    margin: 0;
    font-style: italic;
    font-size: 1.25rem;
}

.video-frame {
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 0;
    border-radius: 10px;
    background: #000;
}

#shuffle-message {
    min-height: 1.5em;
}