:root {
    --detail-primary: #337ab7;
    --detail-text: #161616;
    --detail-muted: #6b7280;
    --detail-border: #e5e7eb;
    --detail-bg: #ffffff;
    --detail-hover: #f9fafb;
}

/* Breadcrumb */
.breadcrumb-nav {
    padding: 16px 0;
}

.breadcrumb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.breadcrumb-link {
    color: var(--detail-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb-link:hover {
    color: var(--detail-primary);
}

.breadcrumb-sep {
    color: var(--detail-muted);
    opacity: 0.5;
}

.breadcrumb-current {
    color: var(--detail-text);
    font-weight: 500;
}

/* Main Container */
.course-detail {
    background: #f9fafb;
    min-height: 100vh;
}

.course-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px;
}

.course-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: start;
}

/* Course Header */
.course-header {
    margin-bottom: 25px;
    border-bottom: #e2e8f0 1px solid;
}

.course-category {
    display: inline-block;
    background: #eaebef;
    padding: 8px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    margin: 16px 0;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.course-category:hover {
    background: #d6d7db;
}
.course-title {
    margin: 0;
    font-size: clamp(12px, 2vw, 28px);
    font-weight: 700;
    color: var(--detail-text);
    line-height: 1.2;
    font-family: "Work Sans", Helvetica, sans-serif;
}

/* Video Container */
.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 32px;
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-placeholder {
    position: relative;
    width: 100%;
    height: 100%;
}

.video-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: none;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.play-button:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

/* Navigation Tabs */
.course-tabs {
    display: flex;
    gap: 12px;
    margin-top: 1rem;
    margin-bottom: 32px;
}

.tab-button {
    padding: 18px 21px;
    border: #e1e1e1 1px solid;
    background: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-family: "IBM Plex Sans Arabic", Helvetica, sans-serif;
}

.tab-button:hover {
    background: #dde4ff;
}

.tab-button.active {
    background: #f2f5ff;
}

/* Tab Content */
.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Course Details */
.course-details {
    background: var(--detail-bg);
    padding: 32px;
    border-radius: 16px;
    margin-bottom: 32px;
}

.section-title {
    margin: 0 0 20px;
    font-size: 24px;
    font-weight: 700;
    color: var(--detail-text);
    font-family: "Work Sans", Helvetica, sans-serif;
}

.subsection-title {
    margin: 24px 0 16px;
    font-size: 18px;
    font-weight: 600;
    color: var(--detail-text);
    font-family: "Work Sans", Helvetica, sans-serif;
}

.course-description {
    font-size: 15px;
    line-height: 1.7;
    color: var(--detail-text);
    margin-bottom: 24px;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.course-objectives,
.course-requirements {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
}

.course-objectives li,
.course-requirements li {
    padding: 12px 0 12px 32px;
    position: relative;
    font-size: 15px;
    line-height: 1.6;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.course-objectives li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--detail-primary);
    font-weight: bold;
}

.course-requirements li::before {
    content: "•";
    position: absolute;
    left: 8px;
    color: var(--detail-primary);
    font-weight: bold;
}

/* Trainer Section */
.trainer-section {
    background: var(--detail-bg);
    padding: 32px;
    border-radius: 16px;
    margin-bottom: 32px;
}

.trainer-card {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.trainer-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.trainer-info {
    flex: 1;
}

.trainer-name {
    margin: 0 0 4px;
    font-size: 20px;
    font-weight: 600;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.trainer-title {
    margin: 0 0 16px;
    font-size: 14px;
    color: var(--detail-muted);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.trainer-stats {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    color: var(--detail-muted);
    font-size: 14px;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.stat-item svg {
    color: var(--detail-primary);
}

/* Feedback Section */
.feedback-section {
    background: var(--detail-bg);
    padding: 32px;
    border-radius: 16px;
    align-items: flex-start !important;
}

.rating-summary {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--detail-border);
}

.rating-overview {
    text-align: center;
}

.rating-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--detail-text);
    line-height: 1;
    margin-bottom: 12px;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.rating-stars {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.rating-count {
    font-size: 14px;
    color: var(--detail-muted);
    margin: 0;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.rating-breakdown {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.rating-row {
    display: grid;
    grid-template-columns: 60px 1fr 50px;
    gap: 12px;
    align-items: center;
}

.rating-label {
    font-size: 14px;
    color: var(--detail-muted);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.rating-bar {
    height: 8px;
    background: var(--detail-border);
    border-radius: 4px;
    overflow: hidden;
}

.rating-fill {
    height: 100%;
    background: var(--detail-primary);
    transition: width 0.3s ease;
}

.rating-percentage {
    font-size: 14px;
    color: var(--detail-muted);
    text-align: right;
    font-family: "Montserrat", Helvetica, sans-serif;
}

/* Reviews List */
.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.review-card {
    padding: 24px;
    border: 1px solid var(--detail-border);
    border-radius: 12px;
    background: var(--detail-hover);
}

.review-header {
    display: flex;
    gap: 16px;
    align-items: center;
    margin-bottom: 12px;
}

.review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.review-meta {
    flex: 1;
}

.reviewer-name {
    margin: 0 0 4px;
    font-size: 16px;
    font-weight: 600;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.review-date {
    font-size: 13px;
    color: var(--detail-muted);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.review-rating {
    display: flex;
    gap: 4px;
}

.review-text {
    margin: 0;
    font-size: 15px;
    line-height: 1.6;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.no-reviews {
    text-align: center;
    padding: 40px;
    color: var(--detail-muted);
    font-family: "Montserrat", Helvetica, sans-serif;
}

/* Trainee Section */
.trainee-section {
    background: var(--detail-bg);
    padding: 32px;
    border-radius: 16px;
}

.trainee-info {
    font-size: 15px;
    line-height: 1.7;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.trainee-list {
    list-style: none;
    padding: 0;
    margin: 20px 0 0;
}

.trainee-list li {
    padding: 12px 0 12px 32px;
    position: relative;
    font-size: 15px;
    line-height: 1.6;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.trainee-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--detail-primary);
    font-weight: bold;
}

/* Sidebar */
.sidebar-sticky {
    position: sticky;
    top: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.course-price-card {
    background: var(--detail-bg);
    padding: 24px;
    border-radius: 16px;
    border: 2px solid var(--detail-primary);
}

.price-header {
    text-align: center;
    margin-bottom: 20px;
}

.price {
    font-size: 36px;
    font-weight: 700;
    color: var(--detail-primary);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.enroll-button {
    width: 100%;
    padding: 14px 24px;
    background: var(--detail-primary);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.enroll-button:hover {
    background: #2563a8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(51, 122, 183, 0.3);
}

/* Curriculum Card */
.curriculum-card {
    padding: 24px;
}

.curriculum-title {
    margin: 0 0 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.curriculum-stats {
    font-size: 13px;
    color: var(--detail-muted);
    margin-bottom: 20px;
    display: flex;
    gap: 8px;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.curriculum-accordion {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.accordion-item {
    border-radius: 8px;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 16px;
    background: #f2f5ff;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s ease;
    text-align: left;
}

.accordion-header:hover {
    background: #e2e8f0;
}

.accordion-title-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.accordion-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.accordion-meta {
    font-size: 12px;
    color: var(--detail-muted);
    gap: 12px;
    display: flex;
    font-family: "Montserrat", Helvetica, sans-serif;
}

.accordion-icon {
    transition: transform 0.3s ease;
    color: var(--detail-muted);
    flex-shrink: 0;
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    overflow-y: auto;
    transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
    max-height: 1000px;
}

.lecture-item {
    padding: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.lecture-checkbox {
    width: 18px;
    height: 18px;
    border: 2px solid var(--detail-border);
    border-radius: 4px;
    cursor: pointer;
    flex-shrink: 0;
}

.lecture-label {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    cursor: pointer;
    font-family: "Montserrat", Helvetica, sans-serif;
    flex-direction: column;
    gap: 10px;
}

.lecture-title {
    font-size: 14px;
    color: var(--detail-text);
}

.lecture-duration {
    font-size: 13px;
    color: var(--detail-muted);
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

/* Related Courses */
.related-courses {
    background: var(--detail-bg);
    padding: 60px 0;
    margin-top: 60px;
}

.related-container {
    margin: 0 40px;
    padding: 24px;
    background: #f8fafc;
    border-radius: 20px;
}

.related-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.related-title {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
    color: var(--detail-text);
    font-family: "Montserrat", Helvetica, sans-serif;
}

.related-navigation {
    display: flex;
    gap: 12px;
}

.ellipse-course {
    position: absolute;
    left: -110px;
    width: 589px;
    height: 640px;
    border-radius: 353.5px;
    filter: blur(100px);
    background: linear-gradient(
        240deg,
        rgba(51, 122, 183, 0.02) 0%,
        rgb(0 46 125 / 29%) 100%
    );
    z-index: 0;
    bottom: -120px;
}

.nav-button {
    border: 1px solid var(--detail-border);
    background: #337ab7;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 10px 16px;
    color: white;
}

.nav-button:hover:not(:disabled) {
    background: #2563a8;
    border-color: var(--detail-primary);
    color: #ffffff;
}

.nav-button:disabled {
    background: #a8b1ce;
    opacity: 0.5;
    cursor: not-allowed;
}

.courses-swiper {
    padding: 10px 0;
    overflow: visible;
}

.swiper {
    margin: 0 !important;
    width: 100% !important;
}

.courses-swiper .swiper-wrapper {
    align-items: stretch;
}

.courses-swiper .swiper-slide {
    height: auto;
    display: flex;
    width: auto !important;
    align-items: center;
}

.courses-swiper .swiper-slide:first-child {
    margin-left: 0;
}

.courses-swiper .course-card {
    display: flex;
    flex-direction: column;
    min-width: 280px;
    max-width: 320px;
}

.courses-swiper .course-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.courses-swiper .course-footer {
    margin-top: auto;
}

/* Responsive */
@media (min-width: 1024px) {
    .course-card {
        min-width: 330px;
    }
}

@media (max-width: 1024px) {
    .course-layout {
        grid-template-columns: 1fr;
    }

    .course-sidebar {
        order: -1;
    }

    .sidebar-sticky {
        position: static;
    }

    .related-container {
        margin: 0 20px;
        padding: 20px;
    }

    .related-title {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .course-container {
        padding: 24px 16px;
    }

    .course-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-button {
        padding: 12px 16px;
        white-space: nowrap;
    }

    .rating-summary {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .course-details,
    .trainer-section,
    .feedback-section,
    .trainee-section {
        padding: 24px 16px;
    }

    .related-courses {
        padding: 40px 0;
    }

    .related-container {
        margin: 0 16px;
        padding: 16px;
    }

    .related-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .related-title {
        font-size: 20px;
    }

    .breadcrumb-container {
        padding: 0 16px;
        font-size: 12px;
    }

    .course-header {
        margin-bottom: 24px;
    }

    .course-title {
        font-size: 24px;
    }

    .video-container {
        margin-bottom: 24px;
    }

    .trainer-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .trainer-stats {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .related-container {
        margin: 0 12px;
        padding: 12px;
    }

    .course-price-card,
    .curriculum-card {
        padding: 16px;
    }

    .accordion-title {
        font-size: 13px;
    }

    .accordion-meta {
        font-size: 11px;
    }
}