/* ===================================================================
   MODERN COURSE SINGLE PAGE STYLES - Addon Edutech
   =================================================================== */

:root {
    --cs-primary: #f7b020;
    --cs-primary-dark: #e8770e;
    --cs-primary-light: #f3efff;
    --cs-text-dark: #1a1a1a;
    --cs-text-medium: #4a5568;
    --cs-text-light: #6a6f73;
    --cs-bg-light: #f8f9fa;
    --cs-bg-white: #ffffff;
    --cs-border: #e2e8f0;
    --cs-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --cs-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --cs-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --cs-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sticky Top Bar */
.cs-sticky-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--cs-bg-white);
    box-shadow: var(--cs-shadow-sm);
    z-index: 100;
    padding: 12px 24px;
    display: none;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    height: 70px;
}

.cs-sticky-topbar.visible {
    display: flex;
}

.cs-sticky-topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
    min-width: 0;
}

.cs-sticky-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 400px;
}

.cs-sticky-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--cs-text-light);
}

.cs-sticky-topbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.cs-sticky-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--cs-text-dark);
}

.cs-sticky-btn {
    background: var(--cs-primary);
    color: white;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--cs-transition);
}

.cs-sticky-btn:hover {
    background: var(--cs-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(86, 36, 208, 0.3);
}

/* Breadcrumb */
.cs-breadcrumb {
    background: var(--cs-bg-light);
    padding: 12px 24px;
    max-width: 1400px;
    margin: 0 auto;
}


.cs-breadcrumb-nav {
    /* display: flex; */
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--cs-text-light);
}

.cs-breadcrumb-nav a {
    color: var(--cs-text-light);
    text-decoration: none;
    transition: var(--cs-transition);
}

.cs-breadcrumb-nav a:hover {
    color: var(--cs-primary);
    text-decoration: underline;
}

.cs-breadcrumb-separator {
    margin: 0 4px;
}

/* Page Layout Container - Two Column Layout */
.cs-page-layout {
    display: flex;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    min-height: 100vh;
    align-items: flex-start;
    gap: 24px;
    padding: 0 24px;
}

/* Left Column (70%) - Course Details */
.cs-left-column {
    width: 70%;
    flex: 0 0 70%;
    min-width: 0;
    overflow: visible;
    background: var(--cs-bg-white);
    padding-right: 16px;
}

/* Right Column (30%) - Sidebar */
.cs-right-column {
    width: 30%;
    flex: 0 0 30%;
    min-width: 0;
}

/* Main Content - Compact Design */
.cs-main-content {
    padding: 32px 24px;
    width: 100%;
    max-width: 100%;
}

.cs-main-column {
    width: 100%;
    max-width: 100%;
}

/* Course Header */
.cs-course-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--cs-border);
}

.cs-course-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--cs-text-dark);
    line-height: 1.3;
    margin-bottom: 16px;
}

.cs-course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: var(--cs-text-medium);
}

.cs-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.cs-meta-item strong {
    color: var(--cs-text-dark);
    font-weight: 600;
}

/* Course Description Section */
.cs-course-description-section {
    margin-bottom: 32px;
}

.cs-section-heading {
    font-size: 20px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--cs-primary);
    display: inline-block;
}

.cs-description-text {
    font-size: 18px;
    line-height: 1.7;
    color: var(--cs-text-medium);
    text-align: justify;
}

/* Learning Section */
.cs-learning-section {
    margin-bottom: 32px;
}

.cs-learning-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cs-learning-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 18px;
    line-height: 1.6;
    color: var(--cs-text-dark);
}

.cs-learning-bullet {
    color: var(--cs-primary);
    font-size: 16px;
    font-weight: 600;
    flex-shrink: 0;
    margin-top: 2px;
}

.cs-learning-text {
    flex: 1;
}

/* Sessions Section */
.cs-sessions-section {
    margin-bottom: 32px;
}

.cs-sessions-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cs-session-group {
    margin-bottom: 8px;
}

.cs-session-section-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--cs-text-dark);
    margin: 0 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--cs-primary);
}

.cs-session-chapters {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-left: 8px;
}

.cs-session-item {
    padding: 12px 16px;
    background: var(--cs-bg-light);
    border-left: 3px solid var(--cs-primary);
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

.cs-session-item:hover {
    background: #f0f4f8;
    transform: translateX(4px);
}

.cs-session-item i {
    color: var(--cs-primary);
    font-size: 18px;
    flex-shrink: 0;
}

.cs-session-title {
    font-size: 18px;
    font-weight: 500;
    color: var(--cs-text-dark);
    margin: 0;
    flex: 1;
}

/* Review Section */
.cs-review-section {
    margin-bottom: 40px;
    padding: 24px;
    background: var(--cs-bg-light);
    border-radius: 8px;
}

.cs-review-prompt {
    font-size: 14px;
    color: var(--cs-text-medium);
    margin-bottom: 20px;
}

.cs-review-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.cs-review-textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--cs-border);
    border-radius: 6px;
    font-size: 18px;
    font-family: inherit;
    resize: vertical;
    min-height: 120px;
    transition: border-color 0.3s ease;
}

.cs-review-textarea:focus {
    outline: none;
    border-color: var(--cs-primary);
    box-shadow: 0 0 0 3px rgba(247, 180, 32, 0.1);
}

.cs-review-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.cs-review-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--cs-border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.cs-review-input:focus {
    outline: none;
    border-color: var(--cs-primary);
    box-shadow: 0 0 0 3px rgba(247, 180, 32, 0.1);
}

.cs-review-submit-btn {
    background: var(--cs-primary);
    color: white;
    border: none;
    padding: 14px 32px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    align-self: flex-start;
}

.cs-review-submit-btn:hover {
    background: var(--cs-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(247, 180, 32, 0.3);
}

/* Related Courses Section - Full Width Below Columns */
.cs-related-section-wrapper {
    width: 100%;
    max-width: 1400px;
    margin: 48px auto 0;
    padding: 0 24px;
}

.cs-related-section {
    padding-top: 32px;
    border-top: 2px solid var(--cs-border);
}

.cs-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 24px;
}

.cs-related-card {
    background: var(--cs-bg-white);
    border: 1px solid var(--cs-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.cs-related-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.cs-related-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.cs-related-content {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.cs-related-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 8px;
    text-decoration: none;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s ease;
}

.cs-related-title:hover {
    color: var(--cs-primary);
}

.cs-related-price {
    font-size: 18px;
    font-weight: 700;
    color: var(--cs-primary);
    margin-top: auto;
    padding-top: 12px;
}

.cs-category-badge {
    display: inline-block;
    background: var(--cs-primary-light);
    color: var(--cs-primary);
    padding: 6px 16px;
    border-radius: 16px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 16px;
}

.cs-hero h1 {
    font-size: 40px;
    font-weight: 700;
    color: var(--cs-text-dark);
    line-height: 1.2;
    margin-bottom: 16px;
}

.cs-hero-subtitle {
    font-size: 20px;
    color: var(--cs-text-medium);
    line-height: 1.5;
    margin-bottom: 24px;
}

.cs-rating-row {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.cs-stars {
    color: #fbbf24;
    font-size: 18px;
}

.cs-rating-num {
    font-size: 16px;
    font-weight: 700;
    color: var(--cs-text-dark);
}

.cs-review-link {
    font-size: 18px;
    color: var(--cs-text-light);
    text-decoration: none;
}

.cs-review-link:hover {
    text-decoration: underline;
    color: var(--cs-primary);
}

.cs-enrollment {
    font-size: 18px;
    color: var(--cs-text-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

.cs-quick-facts {
    display: flex;
    gap: 32px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.cs-fact {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    color: var(--cs-text-medium);
}

.cs-cta-group {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.cs-btn-primary {
    background: var(--cs-primary);
    color: white;
    padding: 16px 40px;
    border-radius: 8px;
    font-size: 17px;
    font-weight: 700;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--cs-transition);
    box-shadow: 0 4px 14px rgba(86, 36, 208, 0.3);
}

.cs-btn-primary:hover {
    background: var(--cs-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(86, 36, 208, 0.4);
}

.cs-btn-secondary {
    background: transparent;
    color: var(--cs-text-dark);
    padding: 16px 40px;
    border-radius: 8px;
    font-size: 17px;
    font-weight: 700;
    text-decoration: none;
    border: 2px solid var(--cs-text-dark);
    cursor: pointer;
    transition: var(--cs-transition);
}

.cs-btn-secondary:hover {
    background: var(--cs-text-dark);
    color: white;
}

/* Full-Length Sticky Sidebar - Key Element (Right Side) */
.cs-sidebar {
    width: 100%;
    position: sticky;
    top: 20px;
    align-self: flex-start;
    max-height: calc(100vh - 40px);
    background: var(--cs-bg-white);
    border: 1px solid var(--cs-border);
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    z-index: 10;
    scrollbar-width: thin;
    scrollbar-color: var(--cs-border) transparent;
}

.cs-sidebar::-webkit-scrollbar {
    width: 6px;
}

.cs-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.cs-sidebar::-webkit-scrollbar-thumb {
    background: var(--cs-border);
    border-radius: 3px;
}

.cs-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--cs-text-light);
}

/* Sidebar Feature Image */
.cs-sidebar-image {
    width: 100%;
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--cs-bg-light);
}

.cs-feature-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    border-radius: 8px;
}

.cs-sidebar-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.cs-price-section {
    margin-bottom: 20px;
}

.cs-price-current {
    font-size: 32px;
    font-weight: 700;
    color: var(--cs-text-dark);
}

/* Quantity selector - company users */
.cs-quantity-wrap {
    margin-bottom: 20px;
}

.cs-quantity-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 10px;
}

.cs-quantity-control {
    display: flex;
    align-items: stretch;
    gap: 0;
    border: 1px solid var(--cs-border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--cs-bg-white);
    box-shadow: var(--cs-shadow-sm);
}

.cs-qty-btn {
    width: 44px;
    min-width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cs-bg-light);
    border: none;
    color: var(--cs-text-medium);
    font-size: 14px;
    cursor: pointer;
    transition: var(--cs-transition);
}

.cs-qty-btn:hover {
    background: var(--cs-primary);
    color: white;
}

.cs-qty-btn:active {
    transform: scale(0.96);
}

.cs-qty-btn:focus-visible {
    outline: 2px solid var(--cs-primary);
    outline-offset: 2px;
}

.cs-qty-input {
    flex: 1;
    min-width: 0;
    width: 60px;
    text-align: center;
    font-size: 16px;
    font-weight: 700;
    color: var(--cs-text-dark);
    border: none;
    border-left: 1px solid var(--cs-border);
    border-right: 1px solid var(--cs-border);
    background: var(--cs-bg-white);
    padding: 0 12px;
    -moz-appearance: textfield;
}

.cs-qty-input::-webkit-outer-spin-button,
.cs-qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.cs-sidebar-btn {
    width: 100%;
    padding: 14px;
    margin-bottom: 12px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    display: block;
    transition: var(--cs-transition);
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.cs-sidebar-btn-primary {
    background: var(--cs-primary);
    color: white;
    border: none;
}

.cs-sidebar-btn-primary:hover {
    background: var(--cs-primary-dark);
}

.cs-sidebar-btn-secondary {
    background: transparent;
    color: var(--cs-text-dark);
    border: 1px solid var(--cs-border);
}

.cs-sidebar-btn-secondary:hover {
    border-color: var(--cs-primary);
    color: var(--cs-primary);
}

/* Sidebar - Enrollment Info */
.cs-enrollment-info {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 0;
    margin: 20px 0;
    font-size: 14px;
    color: var(--cs-text-medium);
    border-top: 1px solid var(--cs-border);
    border-bottom: 1px solid var(--cs-border);
}

.cs-enrollment-info i {
    color: var(--cs-primary);
    font-size: 16px;
}

/* Course Includes - Structured Grid */
.cs-course-includes {
    margin: 24px 0;
}

.cs-includes-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 16px;
}

.cs-includes-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cs-include-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2px 0;
    font-size: 14px;
    border-bottom: 1px solid #f0f0f0;
}

.cs-include-item:last-child {
    border-bottom: none;
}

.cs-include-label {
    color: var(--cs-text-medium);
    font-weight: 500;
}

.cs-include-value {
    color: var(--cs-text-dark);
    font-weight: 600;
}

/* Eligibility Section */
.cs-eligibility-section {
    /* margin: 24px 0; */
    padding-top: 20px;
    border-top: 1px solid var(--cs-border);
}

.cs-eligibility-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 12px;
}

.cs-eligibility-text {
    font-size: 14px;
    line-height: 1.6;
    color: var(--cs-text-medium);
}

/* Tags Section */
.cs-tags-section {
    /* margin: 24px 0; */
    padding-top: 20px;
    border-top: 1px solid var(--cs-border);
}

.cs-tags-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 12px;
}

.cs-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.cs-tag-item {
    display: inline-block;
    padding: 6px 12px;
    background: var(--cs-bg-light);
    border: 1px solid var(--cs-border);
    border-radius: 4px;
    font-size: 13px;
    color: var(--cs-text-medium);
    transition: all 0.2s ease;
}

.cs-tag-item:hover {
    background: var(--cs-primary-light);
    border-color: var(--cs-primary);
    color: var(--cs-primary);
}

/* Navigation Tabs */
.cs-nav-tabs {
    position: sticky;
    top: 0;
    background: var(--cs-bg-white);
    border-bottom: 2px solid var(--cs-border);
    z-index: 5;
    padding: 0 24px;
    margin: 0;
    width: 100%;
}

.cs-tabs {
    display: flex;
    gap: 32px;
    overflow-x: auto;
}

.cs-tab {
    padding: 16px 0;
    font-size: 18px;
    font-weight: 500;
    color: var(--cs-text-light);
    text-decoration: none;
    border-bottom: 3px solid transparent;
    transition: var(--cs-transition);
    white-space: nowrap;
    cursor: pointer;
}

.cs-tab:hover {
    color: var(--cs-text-dark);
    border-bottom-color: var(--cs-border);
}

.cs-tab.active {
    color: var(--cs-primary);
    border-bottom-color: var(--cs-primary);
    font-weight: 600;
}

/* Main Content Sections */
.cs-main-content {
    padding: 48px 24px;
    width: 100%;
    max-width: 100%;
}

.cs-main-column {
    width: 100%;
    max-width: 100%;
}

.cs-content-section {
    padding: 48px 0;
    border-bottom: 1px solid var(--cs-border);
}

.cs-content-section:last-child {
    border-bottom: none;
}

.cs-section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--cs-text-dark);
    margin-bottom: 24px;
}

.cs-learning-outcomes {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.cs-outcome-item {
    padding: 16px;
    background: var(--cs-primary-light);
    border-left: 4px solid var(--cs-primary);
    border-radius: 6px;
    display: flex;
    gap: 12px;
    align-items: start;
}

.cs-outcome-item i {
    color: var(--cs-primary);
    margin-top: 2px;
}

.cs-outcome-text {
    font-size: 18px;
    color: var(--cs-text-dark);
    line-height: 1.6;
}

/* Curriculum Accordion */
.cs-curriculum-accordion {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cs-curriculum-section {
    background: var(--cs-bg-white);
    border: 1px solid var(--cs-border);
    border-radius: 8px;
    overflow: hidden;
}

.cs-curriculum-header {
    padding: 20px 24px;
    background: var(--cs-bg-light);
    border-bottom: 1px solid var(--cs-border);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--cs-transition);
}

.cs-curriculum-header:hover {
    background: #f0f0f0;
}

.cs-curriculum-header h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin: 0;
}

.cs-curriculum-meta {
    display: flex;
    gap: 16px;
    font-size: 14px;
    color: var(--cs-text-light);
}

.cs-curriculum-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.cs-curriculum-content.expanded {
    max-height: 2000px;
}

.cs-lecture-list {
    padding: 16px 24px;
}

.cs-lecture-item {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cs-lecture-item:last-child {
    border-bottom: none;
}

.cs-lecture-info {
    display: flex;
    gap: 12px;
    align-items: center;
    flex: 1;
}

.cs-lecture-title {
    font-size: 18px;
    color: var(--cs-text-dark);
}

.cs-lecture-duration {
    font-size: 14px;
    color: var(--cs-text-light);
}

/* Instructor Section */
.cs-instructor-card {
    background: var(--cs-bg-white);
    border: 1px solid var(--cs-border);
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--cs-shadow-sm);
}

.cs-instructor-header {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.cs-instructor-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--cs-primary-light);
    object-fit: cover;
}

.cs-instructor-info h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 8px;
}

.cs-instructor-title {
    font-size: 16px;
    color: var(--cs-primary);
    margin-bottom: 12px;
}

.cs-instructor-stats {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--cs-text-light);
    margin-bottom: 16px;
}

.cs-instructor-bio {
    font-size: 18px;
    line-height: 1.7;
    color: var(--cs-text-medium);
    margin-top: 24px;
}

/* Reviews Section */
.cs-review-summary {
    background: var(--cs-bg-light);
    border: 1px solid var(--cs-border);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 40px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 32px;
}

.cs-review-average {
    text-align: center;
}

.cs-review-average-num {
    font-size: 64px;
    font-weight: 700;
    color: var(--cs-text-dark);
    margin-bottom: 12px;
}

.cs-review-breakdown {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cs-review-breakdown-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cs-review-progress {
    flex: 1;
    height: 8px;
    background: var(--cs-border);
    border-radius: 4px;
    overflow: hidden;
}

.cs-review-progress-fill {
    height: 100%;
    background: #fbbf24;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.cs-review-card {
    background: var(--cs-bg-white);
    border: 1px solid var(--cs-border);
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 24px;
}

.cs-review-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 16px;
}

.cs-reviewer-info {
    display: flex;
    gap: 12px;
    align-items: center;
}

.cs-reviewer-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--cs-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--cs-primary);
}

.cs-reviewer-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 4px;
}

.cs-review-date {
    font-size: 13px;
    color: var(--cs-text-light);
}

.cs-review-text {
    font-size: 18px;
    line-height: 1.7;
    color: var(--cs-text-medium);
}

/* FAQ Section */
.cs-faq-item {
    background: var(--cs-bg-white);
    border: 1px solid var(--cs-border);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.cs-faq-question {
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--cs-transition);
}

.cs-faq-question:hover {
    background: var(--cs-bg-light);
}

.cs-faq-question h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin: 0;
    flex: 1;
    padding-right: 40px;
}

.cs-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 24px;
}

.cs-faq-answer.expanded {
    max-height: 500px;
    padding: 0 24px 20px;
}

.cs-faq-answer p {
    font-size: 18px;
    line-height: 1.7;
    color: var(--cs-text-medium);
}

/* Related Courses */
.cs-related-section {
    background: var(--cs-bg-light);
    padding: 24px 24px;
    margin-top: 60px;
}

.cs-related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.cs-related-card {
    background: var(--cs-bg-white);
    border: 1px solid var(--cs-border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--cs-transition);
}

.cs-related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cs-shadow-lg);
}

.cs-related-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.cs-related-content {
    padding: 20px;
}

.cs-related-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--cs-text-dark);
    margin-bottom: 12px;
    text-decoration: none;
    display: block;
}

.cs-related-title:hover {
    color: var(--cs-primary);
}

.cs-related-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--cs-text-dark);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .cs-page-layout {
        flex-direction: column;
        gap: 0;
        padding: 0 16px;
    }

    .cs-left-column {
        width: 100%;
        flex: 1;
        overflow: visible;
        padding-right: 0;
    }

    .cs-right-column {
        width: 100%;
        flex: 1;
    }

    .cs-sidebar {
        width: 100%;
        position: static;
        max-height: none;
        border-radius: 0;
        margin-top: 24px;
    }

    .cs-course-title {
        font-size: 28px;
    }

    .cs-course-meta {
        flex-direction: column;
        gap: 12px;
    }

    .cs-review-fields {
        grid-template-columns: 1fr;
    }

    .cs-related-section-wrapper {
        padding: 0 16px;
    }

    .cs-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .cs-main-content {
        padding: 24px 16px;
    }

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

    .cs-section-heading {
        font-size: 18px;
    }

    .cs-review-section {
        padding: 20px;
    }

    .cs-related-grid {
        grid-template-columns: 1fr;
    }

    .cs-includes-grid {
        gap: 8px;
    }
}

@media (max-width: 768px) {
    .cs-hero {
        padding: 32px 16px;
    }

    .cs-hero h1 {
        font-size: 28px;
    }

    .cs-hero-subtitle {
        font-size: 16px;
    }

    .cs-cta-group {
        flex-direction: column;
    }

    .cs-btn-primary,
    .cs-btn-secondary {
        width: 100%;
    }

    .cs-main-content {
        padding: 32px 16px;
    }

    .cs-section-title {
        font-size: 24px;
    }

    .cs-related-grid {
        grid-template-columns: 1fr;
    }

    .cs-sticky-topbar {
        padding: 12px 16px;
        height: 60px;
    }

    .cs-sticky-title {
        font-size: 14px;
        max-width: 200px;
    }

    .cs-sticky-price {
        font-size: 20px;
    }

    .cs-sticky-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}

/* Mobile Sticky Bottom Bar */
.cs-mobile-cta-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--cs-bg-white);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    z-index: 100;
    padding: 12px 16px;
    display: none;
    align-items: center;
    justify-content: space-between;
}

@media (max-width: 768px) {
    .cs-mobile-cta-bar {
        display: flex;
    }
}

.cs-mobile-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--cs-text-dark);
}

.cs-mobile-btn {
    background: var(--cs-primary);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    border: none;
    cursor: pointer;
}