/**
 * YT Learn — Frontend Course Player Styles
 *
 * Covers:
 *  - Course overview page (single-course.php)
 *  - Course player layout (course-player.php)
 *  - Sidebar accordion
 *  - YouTube video container (16:9 responsive)
 *  - Lesson navigation
 *  - Progress bar
 *  - Resources list
 *  - Discussion section
 *  - Course cards & meta
 *
 * @package YTLearn
 */

/* =============================================================================
   CSS Custom Properties
   ============================================================================= */
:root {
	--ytl-primary:       #6d28d9;
	--ytl-primary-light: #7c3aed;
	--ytl-primary-dark:  #5b21b6;
	--ytl-accent:        #f59e0b;
	--ytl-success:       #10b981;
	--ytl-success-light: #d1fae5;
	--ytl-danger:        #ef4444;
	--ytl-bg:            #f9fafb;
	--ytl-surface:       #ffffff;
	--ytl-border:        #e5e7eb;
	--ytl-text:          #1f2937;
	--ytl-text-muted:    #6b7280;
	--ytl-radius:        10px;
	--ytl-shadow:        0 1px 4px rgba(0,0,0,.08);
	--ytl-shadow-md:     0 4px 16px rgba(0,0,0,.12);
	--ytl-shadow-lg:     0 8px 32px rgba(0,0,0,.18);
	--ytl-transition:    all .2s ease;
	--ytl-sidebar-width: 340px;
	--ytl-header-height: 60px;
}

/* =============================================================================
   Base Reset (scoped to plugin elements)
   ============================================================================= */
.ytlearn-course-page *,
.ytlearn-player-wrap * {
	box-sizing: border-box;
}

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

/* =============================================================================
   COURSE OVERVIEW — Banner
   ============================================================================= */
.ytlearn-course-banner {
	position: relative;
	background-size: cover;
	background-position: center;
	background-color: var(--ytl-primary-dark);
	min-height: 320px;
	display: flex;
	align-items: flex-end;
}

.ytlearn-course-banner--no-image {
	background: linear-gradient(135deg, var(--ytl-primary-dark) 0%, var(--ytl-primary) 100%);
	min-height: 160px;
	align-items: center;
}

.ytlearn-banner-overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(to top, rgba(0,0,0,.8) 0%, rgba(0,0,0,.3) 60%, transparent 100%);
	display: flex;
	align-items: flex-end;
	width: 100%;
}

.ytlearn-banner-content {
	width: 100%;
	padding: 40px 24px 32px;
	max-width: 1200px;
	margin: 0 auto;
}

.ytlearn-category-badge {
	display: inline-block;
	background: var(--ytl-accent);
	color: #000;
	font-size: 11px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.8px;
	padding: 3px 10px;
	border-radius: 20px;
	text-decoration: none;
	margin-bottom: 12px;
}

.ytlearn-course-title {
	color: #fff;
	font-size: clamp(24px, 4vw, 40px);
	font-weight: 800;
	line-height: 1.2;
	margin: 0 0 12px;
	text-shadow: 0 2px 8px rgba(0,0,0,.3);
}

.ytlearn-course-excerpt {
	color: rgba(255,255,255,.85);
	font-size: 16px;
	margin: 0 0 16px;
	max-width: 680px;
	line-height: 1.6;
}

.ytlearn-course-meta-row {
	display: flex;
	flex-wrap: wrap;
	gap: 16px;
	color: rgba(255,255,255,.8);
	font-size: 13px;
}

.ytlearn-course-meta-row span {
	display: flex;
	align-items: center;
	gap: 5px;
}

/* =============================================================================
   COURSE OVERVIEW — Two-column layout
   ============================================================================= */
.ytlearn-course-layout {
	display: grid;
	grid-template-columns: 1fr 340px;
	gap: 32px;
	padding: 40px 0;
	align-items: start;
}

@media (max-width: 900px) {
	.ytlearn-course-layout {
		grid-template-columns: 1fr;
	}
	.ytlearn-course-sidebar {
		order: -1;
	}
}

.ytlearn-section {
	margin-bottom: 40px;
}

.ytlearn-section h2 {
	font-size: 20px;
	font-weight: 700;
	color: var(--ytl-text);
	margin: 0 0 16px;
	padding-bottom: 10px;
	border-bottom: 2px solid var(--ytl-border);
}

/* =============================================================================
   Progress Bar (Course Overview)
   ============================================================================= */
.ytlearn-progress-section {
	background: linear-gradient(135deg, #ede9fe 0%, #f5f3ff 100%);
	border: 1px solid #c4b5fd;
	border-radius: var(--ytl-radius);
	padding: 20px;
	margin-bottom: 28px;
}

.ytlearn-progress-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 10px;
	font-weight: 600;
	font-size: 14px;
	color: var(--ytl-primary-dark);
}

.ytlearn-progress-percent {
	font-size: 18px;
	font-weight: 800;
	color: var(--ytl-primary);
}

.ytlearn-progress-bar,
.ytlearn-progress-bar-sm {
	height: 8px;
	background: rgba(109,40,217,.2);
	border-radius: 99px;
	overflow: hidden;
	margin-bottom: 14px;
}

.ytlearn-progress-fill,
.ytlearn-progress-fill-sm {
	height: 100%;
	background: linear-gradient(90deg, var(--ytl-primary) 0%, var(--ytl-primary-light) 100%);
	border-radius: 99px;
	transition: width 0.6s ease;
}

/* =============================================================================
   Buttons
   ============================================================================= */
.ytlearn-btn {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 12px 24px;
	border-radius: 8px;
	font-size: 14px;
	font-weight: 600;
	text-decoration: none;
	border: none;
	cursor: pointer;
	transition: var(--ytl-transition);
}

.ytlearn-btn-primary {
	background: linear-gradient(135deg, var(--ytl-primary) 0%, var(--ytl-primary-light) 100%);
	color: #fff;
	box-shadow: 0 4px 12px rgba(109,40,217,.3);
}

.ytlearn-btn-primary:hover {
	background: linear-gradient(135deg, var(--ytl-primary-dark) 0%, var(--ytl-primary) 100%);
	box-shadow: 0 6px 20px rgba(109,40,217,.4);
	transform: translateY(-1px);
	color: #fff;
	text-decoration: none;
}

.ytlearn-btn-resume {
	background: var(--ytl-success);
	color: #fff;
	box-shadow: 0 4px 12px rgba(16,185,129,.3);
	margin-top: 4px;
}

.ytlearn-btn-resume:hover {
	background: #059669;
	color: #fff;
	text-decoration: none;
}

.ytlearn-btn-full {
	width: 100%;
	justify-content: center;
	padding: 14px;
	font-size: 15px;
}

/* =============================================================================
   Syllabus Accordion (Course Overview)
   ============================================================================= */
.ytlearn-syllabus-meta {
	display: flex;
	align-items: center;
	gap: 10px;
	font-size: 13px;
	color: var(--ytl-text-muted);
	margin-bottom: 16px;
}

.ytlearn-dot {
	color: #d1d5db;
}

.ytlearn-accordion {
	border: 1px solid var(--ytl-border);
	border-radius: var(--ytl-radius);
	overflow: hidden;
}

.ytlearn-accordion-item {
	border-bottom: 1px solid var(--ytl-border);
}

.ytlearn-accordion-item:last-child {
	border-bottom: none;
}

.ytlearn-accordion-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 14px 18px;
	cursor: pointer;
	background: var(--ytl-bg);
	user-select: none;
	transition: background .15s;
}

.ytlearn-accordion-header:hover {
	background: #ede9fe;
}

.ytlearn-accordion-toggle {
	display: flex;
	align-items: center;
	gap: 10px;
	font-weight: 600;
	font-size: 14px;
	color: var(--ytl-text);
}

.ytlearn-accordion-icon {
	font-size: 10px;
	transition: transform .2s;
	color: var(--ytl-primary);
}

.ytlearn-accordion-open .ytlearn-accordion-icon {
	transform: rotate(90deg);
}

.ytlearn-module-count {
	font-size: 12px;
	color: var(--ytl-text-muted);
}

.ytlearn-lesson-list {
	list-style: none;
	margin: 0;
	padding: 8px 0;
	background: var(--ytl-surface);
}

.ytlearn-lesson-row {
	border-bottom: 1px solid #f3f4f6;
}

.ytlearn-lesson-row:last-child {
	border-bottom: none;
}

.ytlearn-lesson-link {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 10px 18px;
	text-decoration: none;
	color: var(--ytl-text);
	font-size: 13px;
	transition: background .15s;
}

.ytlearn-lesson-link:hover {
	background: #f5f3ff;
	color: var(--ytl-primary);
	text-decoration: none;
}

.ytlearn-lesson-done .ytlearn-lesson-link {
	color: var(--ytl-text-muted);
}

.ytlearn-lesson-status .dashicons {
	font-size: 16px;
	color: #d1d5db;
}

.ytlearn-check {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 18px;
	height: 18px;
	background: var(--ytl-success);
	color: #fff;
	border-radius: 50%;
	font-size: 10px;
	font-weight: 700;
}

.ytlearn-lesson-name {
	flex: 1;
}

.ytlearn-lesson-time {
	font-size: 11px;
	color: var(--ytl-text-muted);
	background: var(--ytl-border);
	padding: 2px 7px;
	border-radius: 4px;
	flex-shrink: 0;
}

.ytlearn-lock-icon {
	color: #d1d5db !important;
	font-size: 14px !important;
}

/* =============================================================================
   Course Sidebar Card
   ============================================================================= */
.ytlearn-course-sidebar {
	position: sticky;
	top: 20px;
	display: flex;
	flex-direction: column;
	gap: 20px;
}

.ytlearn-course-card {
	background: var(--ytl-surface);
	border: 1px solid var(--ytl-border);
	border-radius: 12px;
	overflow: hidden;
	box-shadow: var(--ytl-shadow-md);
}

.ytlearn-card-thumbnail {
	overflow: hidden;
	aspect-ratio: 16/9;
}

.ytlearn-card-img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

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

.ytlearn-course-info-list {
	list-style: none;
	margin: 16px 0 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.ytlearn-course-info-list li {
	display: flex;
	align-items: center;
	gap: 10px;
	font-size: 13px;
	color: var(--ytl-text);
}

.ytlearn-course-info-list .dashicons {
	color: var(--ytl-primary);
	font-size: 18px;
}

/* Instructor Box */
.ytlearn-instructor-box {
	background: var(--ytl-surface);
	border: 1px solid var(--ytl-border);
	border-radius: var(--ytl-radius);
	padding: 16px 20px;
	box-shadow: var(--ytl-shadow);
}

.ytlearn-instructor-box h4 {
	margin: 0 0 12px;
	font-size: 13px;
	text-transform: uppercase;
	letter-spacing: 0.5px;
	color: var(--ytl-text-muted);
}

.ytlearn-instructor-info {
	display: flex;
	align-items: center;
	gap: 12px;
}

.ytlearn-instructor-avatar {
	width: 44px;
	height: 44px;
	border-radius: 50%;
	background: linear-gradient(135deg, var(--ytl-primary), var(--ytl-primary-light));
	color: #fff;
	font-size: 18px;
	font-weight: 700;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-shrink: 0;
}

/* =============================================================================
   PLAYER LAYOUT
   ============================================================================= */
.ytlearn-player-page {
	margin: 0;
	padding: 0;
	overflow: hidden;
}

.ytlearn-player-wrap {
	height: 100vh;
	display: flex;
	flex-direction: column;
	background: #0f0f0f;
	color: #f1f1f1;
}

/* Player Header */
.ytlearn-player-header {
	height: var(--ytl-header-height);
	background: #1a1a2e;
	border-bottom: 1px solid #2d2d4e;
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0 16px;
	flex-shrink: 0;
	z-index: 100;
}

.ytlearn-player-header-left {
	display: flex;
	align-items: center;
	gap: 14px;
	overflow: hidden;
}

.ytlearn-back-btn {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	background: rgba(255,255,255,.08);
	border-radius: 8px;
	color: #fff;
	text-decoration: none;
	flex-shrink: 0;
	transition: background .15s;
}

.ytlearn-back-btn:hover {
	background: rgba(255,255,255,.15);
	color: #fff;
	text-decoration: none;
}

.ytlearn-player-course-info {
	display: flex;
	flex-direction: column;
	overflow: hidden;
}

.ytlearn-player-course-name {
	font-size: 11px;
	color: rgba(255,255,255,.5);
	text-transform: uppercase;
	letter-spacing: 0.5px;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.ytlearn-player-lesson-name {
	font-size: 14px;
	font-weight: 600;
	color: #fff;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.ytlearn-player-header-right {
	display: flex;
	align-items: center;
	gap: 16px;
	flex-shrink: 0;
}

/* Progress Compact */
.ytlearn-progress-compact {
	display: flex;
	align-items: center;
	gap: 8px;
}

.ytlearn-progress-bar-sm {
	width: 120px;
	height: 5px;
	background: rgba(255,255,255,.15);
	border-radius: 99px;
	overflow: hidden;
	margin-bottom: 0;
}

.ytlearn-progress-fill-sm {
	height: 100%;
	background: linear-gradient(90deg, var(--ytl-success) 0%, #34d399 100%);
	border-radius: 99px;
}

.ytlearn-progress-label {
	font-size: 12px;
	color: rgba(255,255,255,.7);
	white-space: nowrap;
}

/* Player Body */
.ytlearn-player-body {
	flex: 1;
	display: flex;
	overflow: hidden;
	height: calc(100vh - var(--ytl-header-height));
}

/* =============================================================================
   PLAYER SIDEBAR
   ============================================================================= */
.ytlearn-player-sidebar {
	width: var(--ytl-sidebar-width);
	flex-shrink: 0;
	background: #111111;
	border-right: 1px solid #2a2a2a;
	display: flex;
	flex-direction: column;
	overflow: hidden;
	transition: width .3s ease;
}

.ytlearn-player-sidebar.ytlearn-sidebar-collapsed {
	width: 0;
	border-right: none;
	overflow: hidden;
}

.ytlearn-sidebar-header {
	padding: 14px 16px;
	background: #1a1a1a;
	border-bottom: 1px solid #2a2a2a;
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex-shrink: 0;
}

.ytlearn-sidebar-header h3 {
	margin: 0;
	font-size: 13px;
	font-weight: 700;
	color: rgba(255,255,255,.8);
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.ytlearn-sidebar-toggle {
	background: none;
	border: none;
	color: rgba(255,255,255,.5);
	cursor: pointer;
	padding: 4px;
	transition: color .15s;
}

.ytlearn-sidebar-toggle:hover {
	color: #fff;
}

.ytlearn-sidebar-body {
	flex: 1;
	overflow-y: auto;
	padding: 8px 0;
}

.ytlearn-sidebar-body::-webkit-scrollbar { width: 4px; }
.ytlearn-sidebar-body::-webkit-scrollbar-track { background: #1a1a1a; }
.ytlearn-sidebar-body::-webkit-scrollbar-thumb { background: #444; border-radius: 2px; }

/* Module in sidebar */
.ytlearn-sidebar-module {}

.ytlearn-sidebar-module-header {
	display: flex;
	align-items: flex-start;
	gap: 8px;
	padding: 10px 14px;
	cursor: pointer;
	background: #1a1a1a;
	border-bottom: 1px solid #222;
	user-select: none;
}

.ytlearn-sidebar-module-header:hover {
	background: #222;
}

.ytlearn-sidebar-module-toggle {
	font-size: 10px;
	margin-top: 3px;
	flex-shrink: 0;
	color: rgba(255,255,255,.4);
}

.ytlearn-sidebar-module-title {
	font-size: 12px;
	font-weight: 600;
	color: rgba(255,255,255,.7);
	line-height: 1.4;
}

/* Lessons in sidebar */
.ytlearn-sidebar-lessons {
	list-style: none;
	margin: 0;
	padding: 0;
}

.ytlearn-sidebar-lesson a {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 10px 14px 10px 28px;
	text-decoration: none;
	color: rgba(255,255,255,.6);
	font-size: 13px;
	line-height: 1.4;
	transition: background .15s, color .15s;
	border-bottom: 1px solid #1f1f1f;
}

.ytlearn-sidebar-lesson a:hover {
	background: rgba(109,40,217,.2);
	color: #fff;
	text-decoration: none;
}

.ytlearn-sidebar-lesson--active a {
	background: rgba(109,40,217,.3);
	color: #fff;
	border-left: 3px solid var(--ytl-primary-light);
}

.ytlearn-sidebar-lesson--done a {
	color: rgba(255,255,255,.4);
}

.ytlearn-sidebar-lesson-status {
	flex-shrink: 0;
	font-size: 14px;
}

.ytlearn-sidebar-lesson-status .dashicons {
	font-size: 14px;
	width: 14px;
	height: 14px;
	color: rgba(255,255,255,.3);
}

.ytlearn-check-icon {
	display: inline-flex;
	width: 16px;
	height: 16px;
	background: var(--ytl-success);
	color: #fff;
	font-size: 10px;
	font-weight: 700;
	border-radius: 50%;
	align-items: center;
	justify-content: center;
}

.ytlearn-sidebar-lesson-title {
	flex: 1;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.ytlearn-sidebar-lesson-time {
	font-size: 11px;
	color: rgba(255,255,255,.3);
	flex-shrink: 0;
}

/* =============================================================================
   PLAYER MAIN
   ============================================================================= */
.ytlearn-player-main {
	flex: 1;
	overflow-y: auto;
	background: #fff;
	color: var(--ytl-text);
}

/* Video Container — 16:9 responsive */
.ytlearn-video-wrap {
	background: #000;
	position: sticky;
	top: 0;
	z-index: 50;
}

.ytlearn-video-container {
	position: relative;
	width: 100%;
	padding-top: 56.25%; /* 16:9 */
}

.ytlearn-video-container iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	border: none;
}

.ytlearn-no-video {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	height: 200px;
	color: rgba(255,255,255,.4);
	gap: 10px;
}

.ytlearn-no-video .dashicons {
	font-size: 48px;
	width: 48px;
	height: 48px;
}

/* =============================================================================
   Lesson Content Area
   ============================================================================= */
.ytlearn-lesson-content {
	padding: 24px 32px;
	max-width: 900px;
}

/* Lesson Header */
.ytlearn-lesson-header {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 16px;
	margin-bottom: 24px;
	padding-bottom: 20px;
	border-bottom: 1px solid var(--ytl-border);
}

.ytlearn-lesson-title {
	font-size: clamp(20px, 3vw, 28px);
	font-weight: 800;
	color: var(--ytl-text);
	margin: 0 0 8px;
	line-height: 1.3;
}

.ytlearn-lesson-meta {
	display: flex;
	align-items: center;
	gap: 12px;
	flex-wrap: wrap;
}

.ytlearn-lesson-module {
	font-size: 12px;
	background: #ede9fe;
	color: var(--ytl-primary);
	padding: 3px 10px;
	border-radius: 20px;
	font-weight: 600;
}

.ytlearn-lesson-duration {
	font-size: 13px;
	color: var(--ytl-text-muted);
	display: flex;
	align-items: center;
	gap: 4px;
}

/* Mark Complete Button */
.ytlearn-complete-btn {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 10px 18px;
	border: 2px solid var(--ytl-border);
	border-radius: 8px;
	background: var(--ytl-surface);
	color: var(--ytl-text);
	font-size: 13px;
	font-weight: 600;
	cursor: pointer;
	transition: var(--ytl-transition);
	white-space: nowrap;
	flex-shrink: 0;
}

.ytlearn-complete-btn:hover {
	border-color: var(--ytl-success);
	color: var(--ytl-success);
	background: var(--ytl-success-light);
}

.ytlearn-complete-btn--done {
	border-color: var(--ytl-success);
	background: var(--ytl-success-light);
	color: var(--ytl-success);
}

.ytlearn-complete-btn--loading {
	opacity: 0.7;
	pointer-events: none;
}

.ytlearn-login-cta {
	font-size: 12px;
	color: var(--ytl-text-muted);
	text-decoration: underline;
	white-space: nowrap;
}

/* =============================================================================
   Lesson Navigation
   ============================================================================= */
.ytlearn-lesson-nav {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 12px;
	margin-bottom: 32px;
}

.ytlearn-nav-btn {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 14px 18px;
	border: 1px solid var(--ytl-border);
	border-radius: var(--ytl-radius);
	text-decoration: none;
	color: var(--ytl-text);
	background: var(--ytl-surface);
	transition: var(--ytl-transition);
	min-height: 60px;
}

.ytlearn-nav-btn:hover {
	border-color: var(--ytl-primary);
	background: #f5f3ff;
	color: var(--ytl-primary);
	text-decoration: none;
	transform: translateY(-1px);
	box-shadow: var(--ytl-shadow-md);
}

.ytlearn-nav-next {
	justify-content: flex-end;
	text-align: right;
}

.ytlearn-nav-prev {
	justify-content: flex-start;
}

.ytlearn-nav-disabled {
	opacity: 0;
	pointer-events: none;
}

.ytlearn-nav-finish {
	border-color: var(--ytl-success);
	color: var(--ytl-success);
}

.ytlearn-nav-text {
	display: flex;
	flex-direction: column;
}

.ytlearn-nav-label {
	font-size: 10px;
	text-transform: uppercase;
	letter-spacing: 0.5px;
	color: var(--ytl-text-muted);
}

.ytlearn-nav-title {
	font-size: 13px;
	font-weight: 600;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	max-width: 220px;
}

/* =============================================================================
   Lesson Description
   ============================================================================= */
.ytlearn-lesson-description {
	margin-bottom: 32px;
}

.ytlearn-lesson-description h3 {
	font-size: 16px;
	font-weight: 700;
	margin: 0 0 12px;
	color: var(--ytl-text);
}

.ytlearn-description-content {
	font-size: 14px;
	line-height: 1.7;
	color: #374151;
}

/* =============================================================================
   Resources
   ============================================================================= */
.ytlearn-lesson-resources {
	margin-bottom: 32px;
}

.ytlearn-lesson-resources h3 {
	font-size: 16px;
	font-weight: 700;
	margin: 0 0 12px;
	color: var(--ytl-text);
}

.ytlearn-resource-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.ytlearn-resource-item {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 12px 16px;
	background: var(--ytl-bg);
	border: 1px solid var(--ytl-border);
	border-radius: 8px;
	transition: background .15s;
}

.ytlearn-resource-item:hover {
	background: #ede9fe;
	border-color: #c4b5fd;
}

.ytlearn-resource-item .dashicons {
	color: var(--ytl-primary);
	font-size: 20px;
}

.ytlearn-resource-link {
	flex: 1;
	font-size: 13px;
	font-weight: 500;
	color: var(--ytl-text);
	text-decoration: none;
}

.ytlearn-resource-link:hover {
	color: var(--ytl-primary);
}

.ytlearn-resource-size {
	font-size: 11px;
	color: var(--ytl-text-muted);
}

/* =============================================================================
   Discussion
   ============================================================================= */
.ytlearn-lesson-discussion {
	margin-bottom: 40px;
	padding-top: 24px;
	border-top: 1px solid var(--ytl-border);
}

.ytlearn-lesson-discussion h3 {
	font-size: 16px;
	font-weight: 700;
	margin: 0 0 20px;
}

.ytlearn-comment-thread {
	list-style: none;
	margin: 0 0 24px;
	padding: 0;
}

.ytlearn-comment-body {
	display: flex;
	gap: 12px;
	padding: 14px 0;
	border-bottom: 1px solid var(--ytl-border);
}

.ytlearn-avatar {
	border-radius: 50%;
	flex-shrink: 0;
}

.ytlearn-comment-content {
	flex: 1;
}

.ytlearn-comment-meta {
	display: flex;
	align-items: center;
	gap: 10px;
	margin-bottom: 6px;
}

.ytlearn-comment-author {
	font-size: 13px;
	font-weight: 700;
}

.ytlearn-comment-time {
	font-size: 11px;
	color: var(--ytl-text-muted);
}

.ytlearn-comment-text {
	font-size: 13px;
	line-height: 1.6;
	color: #374151;
}

.ytlearn-comment-actions {
	margin-top: 6px;
}

.ytlearn-comment-actions a {
	font-size: 11px;
	color: var(--ytl-text-muted);
	text-decoration: none;
}

.ytlearn-comment-actions a:hover {
	color: var(--ytl-primary);
}

/* Comment Form */
.ytlearn-discussion-wrap .comment-form label {
	font-size: 12px;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.5px;
	color: var(--ytl-text-muted);
}

.ytlearn-discussion-wrap .comment-form input[type="text"],
.ytlearn-discussion-wrap .comment-form input[type="email"],
.ytlearn-discussion-wrap .comment-form textarea {
	width: 100%;
	border: 1.5px solid var(--ytl-border);
	border-radius: 8px;
	padding: 10px 12px;
	font-size: 14px;
	transition: border-color .2s;
}

.ytlearn-discussion-wrap .comment-form input:focus,
.ytlearn-discussion-wrap .comment-form textarea:focus {
	border-color: var(--ytl-primary);
	outline: none;
	box-shadow: 0 0 0 3px rgba(109,40,217,.12);
}

/* =============================================================================
   Responsive Adjustments
   ============================================================================= */
@media (max-width: 768px) {
	.ytlearn-player-sidebar {
		position: fixed;
		left: -100%;
		top: var(--ytl-header-height);
		height: calc(100vh - var(--ytl-header-height));
		z-index: 200;
		transition: left .3s ease;
		width: 300px;
	}

	.ytlearn-player-sidebar.ytlearn-sidebar-open {
		left: 0;
		box-shadow: 4px 0 20px rgba(0,0,0,.5);
	}

	.ytlearn-lesson-content {
		padding: 16px;
	}

	.ytlearn-lesson-header {
		flex-direction: column;
		align-items: flex-start;
	}

	.ytlearn-lesson-nav {
		grid-template-columns: 1fr;
	}

	.ytlearn-nav-next {
		justify-content: flex-start;
		text-align: left;
	}

	.ytlearn-progress-bar-sm {
		display: none;
	}
}

@media (max-width: 480px) {
	.ytlearn-banner-content {
		padding: 24px 16px 20px;
	}
	.ytlearn-course-title {
		font-size: 22px;
	}
}