.youtube-playlist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.youtube-playlist-grid-item {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    text-align: center;
}

.youtube-playlist-grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.video-container {
    position: relative;
    padding-top: 56.25%; /* 16:9 aspect ratio */
    background: #000;
    overflow: hidden;
}

.video-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.youtube-playlist-grid-item:hover .video-container img {
    transform: scale(1.05);
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: rgba(255, 0, 0, 0.9);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.play-btn::before {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 12px 0 12px 20px;
    border-color: transparent transparent transparent #ffffff;
    margin-left: 5px;
}

.play-btn:hover {
    background: #ff0000;
    transform: translate(-50%, -50%) scale(1.1);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

/* Loading spinner */
.loading-spinner {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s linear infinite;
}

.play-btn.loading .loading-spinner {
    display: block;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Modal styles */
.youtube-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    max-width: none;
}

.youtube-modal.active {
    opacity: 1;
    visibility: visible;
}

.youtube-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 90%;
    max-width: 1000px;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.youtube-modal.active .youtube-modal-content {
    transform: translate(-50%, -50%) scale(1);
}

#youtube-modal-video {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 aspect ratio */
    background: #000;
}

#youtube-modal-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.youtube-modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10000;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    transition: all 0.3s ease;
    line-height: 1;
    padding: 0;
    margin: 0;
}

.youtube-modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: rotate(90deg);
}

/* Focus styles for accessibility */
.play-btn:focus,
.youtube-modal-close:focus {
    outline: 2px solid #ff0000;
    outline-offset: 2px;
}

/* Prevent text selection during animations */
.youtube-playlist-grid-item,
.play-btn,
.youtube-modal-close {
    user-select: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .youtube-playlist-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
        padding: 1rem;
    }

    .play-btn {
        width: 60px;
        height: 60px;
    }

    .youtube-modal-content {
        width: 95%;
    }
}

@media (max-width: 480px) {
    .youtube-playlist-grid {
        grid-template-columns: 1fr;
    }

    .play-btn {
        width: 50px;
        height: 50px;
    }

    .youtube-modal-close {
        top: 10px;
        right: 10px;
        font-size: 30px;
    }
}

/* Modal open state */
body.modal-open {
    overflow: hidden;
}