.course-hero {
    background: linear-gradient(135deg, #d63b03 0%, #e26039 100%);
    padding: 60px 0 40px;
    margin-bottom: 40px;
}

.course-title {
    color: #2c3e50;
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.course-meta {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-weight: 500;
}

.meta-item i {
    color: #fff;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    background: #000;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.playlist-card {
    text-align: right;
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    height: fit-content;
    max-height: 600px;
    display: flex;
    flex-direction: column;
}

.playlist-card h3 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 3px solid #e26039;
}

.playlist-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.playlist-item:hover {
    background: #e26039;
    transform: translateX(-5px);
}

.playlist-item.active {
    background: #d63b03;
    font-weight: 600;
}

.playlist-item.locked {
    opacity: 0.6;
    cursor: not-allowed;
    background: #f1f3f5;
}

.playlist-item.locked:hover {
    background: #f1f3f5;
    transform: none;
}

.playlist-item.locked .playlist-number {
    background: #e9ecef;
    color: #6c757d;
}

.playlist-item.locked .playlist-title {
    color: #6c757d;
}

.playlist-items {
    max-height: 500px;
    overflow-y: auto;
    overflow-x: hidden;
    padding-left: 5px;
}

.playlist-items::-webkit-scrollbar {
    width: 6px;
}

.playlist-items::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.playlist-items::-webkit-scrollbar-thumb {
    background: #d63b03;
    border-radius: 10px;
}

.playlist-items::-webkit-scrollbar-thumb:hover {
    background: #e26039;
}

.playlist-number {
    width: 35px;
    height: 35px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #2c3e50;
}

.playlist-info {
    flex: 1;
}

.playlist-title {
    font-size: 12px;
    color: #2c3e50;
    margin: 0;
}

.playlist-duration {
    color: #6c757d;
    font-size: 10px;
}

.section-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.section-title {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid #e26039;
    display: flex;
    align-items: center;
    gap: 10px;
}

.rating-summary {
    text-align: right;
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, #fff3cd 0%, #fff8e1 100%);
    border-radius: 10px;
}

.rating-big {
    font-size: 3.5rem;
    font-weight: 700;
    color: #d63b03;
}

.stars-big {
    color: #d63b03;
    font-size: 1.5rem;
}

.rating-details {
    flex: 1;
}

.rating-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.rating-bar-fill {
    flex: 1;
    height: 8px;
    background: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
}

.rating-bar-value {
    height: 100%;
    background: #d63b03;
    transition: width 0.3s ease;
}

.comment-item {
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid #e9ecef;
    border-radius: 10px;
    transition: all 0.3s ease;
    text-align: right;
}

.comment-item:hover {
    border-color: #e26039;
    box-shadow: 0 3px 15px rgba(255, 193, 7, 0.2);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.comment-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.playlist-item.active .playlist-title,
.playlist-item.active .playlist-duration {
    color: white;
}

.author-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: linear-gradient(135deg, #d63b03, #e26039);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
}

.author-name {
    font-weight: 600;
    color: #2c3e50;
    text-align: right;
}

.comment-date {
    color: #6c757d;
    font-size: 1.25rem;
    text-align: right;
}

.stars {
    color: #d63b03;
}

.course-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    height: 100%;
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.course-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.course-card-body {
    padding: 20px;
}

.course-card-title {
    color: #2c3e50;
    font-weight: 600;
    margin-bottom: 10px;
}

.course-card-meta {
    display: flex;
    justify-content: space-between;
    color: #6c757d;
    font-size: 0.9rem;
    margin-top: 15px;
}

.btn-enroll {
    background: linear-gradient(135deg, #ff7950 0%, #ff3b00 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-enroll:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 193, 7, 0.4);
    color: #2c3e50;
}

.btn-submit {
    background: #d63b03;
    color: #2c3e50;
    border: none;
    padding: 10px 25px;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    background: #e26039;
    transform: translateY(-2px);
}

.properties__caption {
    text-align: right;
}

@media (max-width: 768px) {
    .course-title {
        font-size: 1.8rem;
    }

    .course-meta {
        gap: 15px;
    }

    .rating-big {
        font-size: 2.5rem;
    }
}