.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary, #6366f1), var(--secondary, #ec4899));
    color: #fff;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

/* User Rating Section */
.user-rating-section {
    margin-top: 20px;
    padding: 15px;
    background: var(--card-bg, #1a1a2e);
    border-radius: 8px;
}

.user-rating-section .rating-inner {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.user-rating-section .rating-label {
    color: var(--text-secondary, #888);
    font-size: 14px;
}

.user-rating-stars {
    display: flex;
    gap: 5px;
    cursor: pointer;
}

.user-rating-stars .star {
    font-size: 22px;
    color: var(--border-color, #2a2a4e);
}

#userRatingText {
    color: var(--text-secondary, #888);
    font-size: 14px;
}

/* ===== 播放页两栏布局 ===== */
.play-layout-container {
    max-width: 1200px;
}

.play-row {
    display: flex;
    flex-wrap: wrap;
}

.play-main {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
    padding: 0 15px;
}

.play-sidebar {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    padding: 0 15px;
}

@media (max-width: 991px) {
    .play-main,
    .play-sidebar {
        flex: 0 0 100%;
        max-width: 100%;
        padding: 0;
    }

    .play-sidebar {
        margin-top: 30px;
    }
}

/* Toast 动画 */
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* News grid layout (play page sidebar) */
[class~="news-grid"] {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}