/***** Nest LMS core styles *****/
:root {
	--nest-lms-primary: var(--wp--preset--color--primary, #2563eb);
	--nest-lms-primary-hover: #1d4ed8;
	--nest-lms-border: var(--wp--preset--color--contrast-3, #e0e0e0);
	--nest-lms-soft: var(--wp--preset--color--base-2, #f8f8f8);
	--nest-lms-muted: #666;
	--nest-lms-text: var(--wp--preset--color--contrast, #1f2937);
	--nest-lms-success: #16a34a;
	--nest-lms-warning: #f59e0b;
	--nest-lms-danger: #c00;
	--nest-lms-radius: 8px;
	--nest-lms-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
	--nest-lms-page-width: min(1120px, calc(100vw - 96px));
}

.nest-course-wrapper,
#nest-course-builder-form,
.nest-builder-back,
#course-builder-response,
.nest-my-courses,
.nest-course-list,
.nest-teacher-dashboard {
	box-sizing: border-box;
}

.nest-course-wrapper {
	width: var(--nest-lms-page-width);
	max-width: none;
	margin-right: auto;
	margin-left: auto;
	color: var(--nest-lms-text);
}

.nest-lms-page .entry-content,
.nest-lms-page .wp-block-post-content,
.nest-lms-page main .wp-block-group,
.nest-lms-page main .wp-block-group__inner-container {
	max-width: none;
}

.nest-lms-page .entry-content > .nest-course-wrapper,
.nest-lms-page .entry-content > #nest-course-builder-form,
.nest-lms-page .entry-content > .nest-builder-back,
.nest-lms-page .entry-content > #course-builder-response,
.nest-lms-page .entry-content > .nest-my-courses,
.nest-lms-page .entry-content > .nest-course-list,
.nest-lms-page .entry-content > .nest-teacher-dashboard,
.nest-lms-page .wp-block-post-content > .nest-course-wrapper,
.nest-lms-page .wp-block-post-content > #nest-course-builder-form,
.nest-lms-page .wp-block-post-content > .nest-builder-back,
.nest-lms-page .wp-block-post-content > #course-builder-response,
.nest-lms-page .wp-block-post-content > .nest-my-courses,
.nest-lms-page .wp-block-post-content > .nest-course-list,
.nest-lms-page .wp-block-post-content > .nest-teacher-dashboard {
	max-width: none;
}

.nest-course-wrapper *,
#nest-course-builder-form *,
.nest-teacher-dashboard *,
.nest-modal * {
	box-sizing: border-box;
}

.nest-button,
.nest-course-nav a,
.nest-course-nav > span,
#nest-course-builder-form button,
#nest-course-builder-form input[type="submit"],
.nest-upload-block button,
.button.nest-choose-content {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
	min-height: 36px;
	padding: 7px 14px;
	border: 1px solid var(--nest-lms-border);
	border-radius: 4px;
	background: var(--nest-lms-soft);
	color: inherit;
	cursor: pointer;
	font-size: 0.95rem;
	line-height: 1.2;
	text-decoration: none;
	transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, opacity 0.15s ease;
}

.nest-button:hover,
.nest-course-nav a:hover,
#nest-course-builder-form button:hover,
#nest-course-builder-form input[type="submit"]:hover,
.nest-upload-block button:hover,
.button.nest-choose-content:hover {
	background: #eee;
	text-decoration: none;
}

#nest-course-builder-form input[type="submit"],
.nest-upload-block button,
.nest-button-primary {
	background: var(--nest-lms-primary);
	border-color: var(--nest-lms-primary);
	color: #fff;
}

#nest-course-builder-form input[type="submit"]:hover,
.nest-upload-block button:hover,
.nest-button-primary:hover {
	background: var(--nest-lms-primary-hover);
	border-color: var(--nest-lms-primary-hover);
	color: #fff;
}

.disabled,
.nest-course-nav > span.disabled {
	color: #9ca3af;
	cursor: not-allowed;
	opacity: 0.65;
}

.overflow {
	overflow-x: auto;
}

.nest-unread td {
	font-weight: 700;
}

hr {
	margin: 24px 0;
	height: 1px;
	border: 0;
	background: var(--nest-lms-border);
}

/***** Course builder *****/
.nest-builder-back {
	width: var(--nest-lms-page-width);
	max-width: none;
	margin: 0 auto 1rem;
}

#nest-course-builder-form {
	width: var(--nest-lms-page-width);
	max-width: none;
	margin: 0 auto;
	padding: 0;
}

#nest-course-builder-form h2 {
	margin: 0 0 1rem;
}

.form-row,
.nest-field {
	margin-bottom: 1rem;
}

.form-row label,
.nest-field label,
.lesson-block label {
	display: block;
	margin-bottom: 4px;
	font-weight: 600;
}

#nest-course-builder-form input[type="text"],
#nest-course-builder-form input[type="date"],
#nest-course-builder-form input[type="file"],
#nest-course-builder-form select,
#nest-course-builder-form textarea,
.form-row input[type="text"],
.form-row textarea {
	width: 100%;
	max-width: 100%;
	padding: 8px 10px;
	border: 1px solid #ccc;
	border-radius: 4px;
	background: #fff;
	color: inherit;
	font-size: 1rem;
	line-height: 1.4;
}

#nest-course-builder-form textarea {
	min-height: 120px;
	resize: vertical;
}

#course_title {
	max-width: 760px;
}

.nest-course-image-preview img {
	display: block;
	max-width: 220px;
	height: auto;
	border-radius: var(--nest-lms-radius);
	border: 1px solid var(--nest-lms-border);
}

.nest-course-thumb-wrap,
.nest-curated-images {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	align-items: center;
}

.nest-curated-images label {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	width: auto;
	padding: 6px;
	border: 1px solid var(--nest-lms-border);
	border-radius: var(--nest-lms-radius);
	background: #fff;
}

.nest-curated-images img {
	display: block;
	width: 72px;
	height: 72px;
	border-radius: 6px;
	object-fit: cover;
}

.nest-radio {
	width: 20px;
	height: 20px;
	margin: 0;
	accent-color: var(--nest-lms-primary);
}

.lessons-list {
	counter-reset: nest-lesson-block;
}

#lesson-fields-container {
	display: flex;
	flex-direction: column;
	gap: 14px;
	margin-top: 0.75rem;
}

.lesson-block {
	position: relative;
	display: grid;
	grid-template-columns: minmax(0, 1fr) minmax(180px, 220px);
	gap: 10px 16px;
	counter-increment: nest-lesson-block;
	padding: 56px 16px 16px;
	border: 1px solid var(--nest-lms-border);
	border-left: 4px solid var(--nest-lms-primary);
	border-radius: var(--nest-lms-radius);
	background: #fff;
	box-shadow: var(--nest-lms-shadow);
}

.lesson-block:nth-child(even) {
	border-left-color: #56b3af;
	background: #fcfcfc;
}

.lesson-block::before {
	content: "Lesson " counter(nest-lesson-block);
	position: absolute;
	top: 14px;
	left: 16px;
	color: var(--nest-lms-text);
	font-size: 0.95rem;
	font-weight: 700;
}

.lesson-block::after {
	content: "\2630";
	position: absolute;
	top: 12px;
	right: 16px;
	width: 30px;
	height: 30px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: 1px solid var(--nest-lms-border);
	border-radius: 4px;
	color: #777;
	background: var(--nest-lms-soft);
	cursor: grab;
}

.lesson-block[draggable="true"] {
	cursor: grab;
}

.lesson-block.dragging {
	opacity: 0.55;
	border-style: dashed;
}

.lesson-block > label,
.lesson-block > input,
.lesson-block > select,
.lesson-block > .lesson-content-fields,
.lesson-block > .description,
.lesson-block > .wp-editor-wrap,
.lesson-block > hr {
	grid-column: 1 / -1;
}

.lesson-block > label:nth-of-type(2),
.lesson-block > select.lesson-type-selector,
.lesson-block > label:last-of-type,
.lesson-block > input[type="date"] {
	grid-column: auto;
}

.lesson-type-selector {
	min-height: 38px;
}

.lesson-content-fields {
	margin-top: 6px;
	padding: 14px 16px;
	border: 1px solid var(--nest-lms-border);
	border-radius: 6px;
	background: var(--nest-lms-soft);
}

.lesson-content-fields .description,
.description {
	margin: 6px 0 0;
	color: var(--nest-lms-muted);
	font-size: 0.85em;
}

.nest-selected-content-preview {
	margin-top: 8px;
	color: var(--nest-lms-muted);
	font-size: 0.9em;
}

#add-lesson {
	margin-top: 1rem;
}

#course-builder-response {
	width: var(--nest-lms-page-width);
	max-width: none;
	min-height: 1.5em;
	margin: 1rem auto 0;
}

/***** H5P picker modal *****/
.nest-modal {
	position: fixed;
	inset: 0;
	z-index: 9999;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 24px;
	background: rgba(0, 0, 0, 0.5);
}

.nest-modal-content {
	position: relative;
	width: min(90vw, 700px);
	max-height: 90vh;
	overflow-y: auto;
	padding: 24px;
	border-radius: var(--nest-lms-radius);
	background: #fff;
	box-shadow: 0 20px 35px rgba(0, 0, 0, 0.18);
}

.nest-modal-footer {
	margin-top: 15px;
	text-align: right;
}

.nest-close {
	position: absolute;
	top: 12px;
	right: 14px;
	border: 0;
	background: none;
	cursor: pointer;
	font-size: 1.5rem;
	font-weight: 400;
	line-height: 1;
}

.nest-lesson-table {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.9em;
}

.nest-lesson-table th,
.nest-lesson-table td {
	padding: 8px 10px;
	border-bottom: 1px solid var(--nest-lms-border);
	text-align: left;
}

.nest-lesson-table th {
	background: var(--nest-lms-soft);
	cursor: pointer;
	font-weight: 600;
}

/***** TinyMCE adjustments *****/
.wp-editor-wrap {
	max-width: 100%;
}

.wp-editor-tabs button,
.mce-btn button {
	min-height: auto !important;
	margin: 0 !important;
	padding: 4px 8px !important;
	border-radius: 3px !important;
	font-size: 12px !important;
	line-height: 1.2 !important;
}

.mce-btn i {
	font-size: 16px !important;
	line-height: 20px !important;
}

/***** Course cards and lists *****/
.nest-my-courses,
.nest-course-list,
.nest-course-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
	gap: 20px;
	margin: 1rem 0;
}

.nest-my-courses,
.nest-course-list,
.nest-teacher-dashboard {
	width: var(--nest-lms-page-width);
	max-width: none;
	margin-right: auto;
	margin-left: auto;
}

.nest-course,
.nest-course-item,
.nest-course-card {
	min-width: 0;
	border: 1px solid var(--nest-lms-border);
	border-radius: var(--nest-lms-radius);
	background: #fff;
	overflow: hidden;
	box-shadow: var(--nest-lms-shadow);
}

.nest-course,
.nest-course-item {
	display: flex;
	flex-direction: column;
	min-height: 100%;
	padding-bottom: 14px;
}

.nest-course p,
.nest-course h3,
.nest-course a,
.nest-course-item h3 {
	margin: 0;
}

.nest-course h3,
.nest-course-item h3 {
	padding: 12px 14px 4px;
	font-size: 1.05em;
	font-weight: 600;
}

.nest-course-image img,
.nest-course-thumb-wrap img,
.nest-course-card-image img {
	display: block;
	width: 100%;
	height: 160px;
	object-fit: cover;
}

.nest-course-actions {
	margin-top: auto;
	padding: 8px 14px 0;
	font-size: 0.9em;
}

/***** Course home *****/
.nest-course-title {
	margin: 0 0 1rem;
	padding: 0;
	font-size: clamp(1.75rem, 4vw, 2.5rem);
	line-height: 1.15;
}

.nest-course-title a {
	color: inherit;
	text-decoration: none;
}

.nest-course-main {
	display: grid;
	grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
	gap: 24px;
	align-items: start;
}

.nest-course-content,
.nest-course-sidebar,
.lesson-right,
.lesson-left,
.lesson-instructions,
.nest-upload-block,
.nest-offline-complete-wrap {
	border: 1px solid var(--nest-lms-border);
	border-radius: var(--nest-lms-radius);
	background: #fff;
	box-shadow: var(--nest-lms-shadow);
}

.nest-course-content,
.nest-course-sidebar,
.lesson-right,
.lesson-left {
	padding: 20px;
}

.nest-course-description {
	margin-bottom: 1.5rem;
}

.nest-course-content h2,
.lesson-left h3,
.nest-course-admin h3 {
	margin: 0 0 0.85rem;
	font-size: 1.1em;
	font-weight: 600;
}

.nest-lesson-list,
.nest-lesson-nav-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

.nest-lesson-list li,
.nest-lesson-nav-list li {
	display: grid;
	grid-template-columns: 28px minmax(0, 1fr);
	gap: 10px;
	align-items: center;
	padding: 10px 0;
	border-bottom: 1px solid var(--nest-lms-border);
}

.nest-lesson-list li:last-child,
.nest-lesson-nav-list li:last-child {
	border-bottom: 0;
}

.nest-lesson-list a,
.nest-lesson-nav-list a {
	color: inherit;
	font-weight: 500;
	text-decoration: none;
}

.nest-lesson-list a:hover,
.nest-lesson-nav-list a:hover {
	color: var(--nest-lms-primary);
	text-decoration: underline;
}

.nest-due-date {
	grid-column: 2;
	color: var(--nest-lms-muted);
	font-size: 0.85em;
}

.nest-lesson-icon {
	width: 24px;
	height: 24px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	align-self: start;
	border-radius: 50%;
	font-size: 15px;
	font-weight: 700;
	line-height: 1;
}

.nest-lesson-complete .nest-lesson-icon {
	background: #dcfce7;
	color: var(--nest-lms-success);
}

.nest-lesson-complete .nest-lesson-icon::before {
	content: "\2713";
}

.nest-lesson-incomplete .nest-lesson-icon {
	border: 2px solid var(--nest-lms-warning);
	color: var(--nest-lms-warning);
}

.nest-lesson-incomplete .nest-lesson-icon::before {
	content: "\25CB";
	font-size: 16px;
}

.nest-course-featured-image img {
	display: block;
	width: 100%;
	height: auto;
	margin-bottom: 1rem;
	border-radius: 6px;
	object-fit: cover;
}

.nest-course-instructor {
	margin-bottom: 1rem;
}

.nest-course-instructor h3 {
	margin: 0;
	font-size: 1em;
}

.nest-course-instructor h3::before {
	content: "Instructor: ";
	color: var(--nest-lms-muted);
	font-weight: 400;
}

.nest-course-admin {
	padding-top: 1rem;
	border-top: 1px solid var(--nest-lms-border);
}

.nest-course-admin .dashicons {
	width: 18px;
	height: 18px;
	margin-right: 6px;
	color: var(--nest-lms-muted);
	font-size: 18px;
	vertical-align: middle;
}

/***** Lesson page *****/
.nest-course-nav {
	display: flex;
	justify-content: flex-end;
	gap: 8px;
	margin: 0 0 1rem;
}

.nest-course-nav .dashicons {
	width: 20px;
	height: 20px;
	font-size: 20px;
	line-height: 20px;
}

.lesson-wrapper {
	display: grid;
	grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
	gap: 24px;
	align-items: start;
}

/***** Teacher dashboard *****/
.nest-teacher-dashboard {
	color: var(--nest-lms-text);
}

.nest-td-header {
	margin-bottom: 1.5rem;
}

.nest-td-greeting {
	margin: 0;
	font-size: clamp(1.75rem, 4vw, 2.5rem);
	line-height: 1.15;
}

.nest-td-panel {
	margin-bottom: 2rem;
}

.nest-td-panel-title {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	margin-bottom: 1rem;
	padding-bottom: 0.75rem;
	border-bottom: 1px solid var(--nest-lms-border);
}

.nest-td-panel-title h3 {
	margin: 0;
	font-size: 1.1em;
}

.nest-td-course-grid {
	display: grid;
	gap: 20px;
}

.nest-td-cols-1 { grid-template-columns: 1fr; }
.nest-td-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.nest-td-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.nest-td-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.nest-td-course-card {
	border: 1px solid var(--nest-lms-border);
	border-radius: var(--nest-lms-radius);
	background: #fff;
	overflow: hidden;
	box-shadow: var(--nest-lms-shadow);
}

.nest-td-card-img,
.nest-td-card-img img {
	display: block;
	width: 100%;
}

.nest-td-card-img img {
	height: 180px;
	object-fit: cover;
}

.nest-td-card-body {
	padding: 14px 16px 16px;
}

.nest-td-card-title {
	margin: 0 0 6px;
	font-size: 1.05em;
}

.nest-td-card-title a {
	color: inherit;
	text-decoration: none;
}

.nest-td-card-title a:hover {
	color: var(--nest-lms-primary);
	text-decoration: underline;
}

.nest-td-card-meta,
.nest-td-empty,
.nest-td-see-all {
	color: var(--nest-lms-muted);
	font-size: 0.9em;
}

.nest-td-card-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-top: 12px;
}

.lesson-left {
	position: sticky;
	top: 24px;
	padding: 0;
	overflow: hidden;
}

.lesson-left h3 {
	padding: 16px 18px;
	border-bottom: 1px solid var(--nest-lms-border);
	background: var(--nest-lms-soft);
}

.nest-lesson-nav-list li {
	padding: 10px 14px;
}

.nest-lesson-nav-list li.current {
	background: #eff6ff;
}

.nest-lesson-nav-list li.current a {
	color: var(--nest-lms-primary);
	font-weight: 700;
}

.lesson-title {
	margin: 0 0 0.75rem;
	font-size: clamp(1.45rem, 3vw, 2rem);
	line-height: 1.2;
}

.lesson-content,
.nest-page-lesson,
.nest-offline-lesson {
	margin-top: 1rem;
}

.lesson-instructions,
.nest-upload-block,
.nest-offline-complete-wrap {
	margin: 1rem 0;
	padding: 16px;
}

.nest-upload-form {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	align-items: flex-end;
}

.nest-upload-field {
	flex: 1 1 240px;
}

.nest-upload-field label {
	display: block;
	margin-bottom: 4px;
	font-weight: 600;
}

.nest-upload-field input[type="file"] {
	width: 100%;
}

.nest-max-score {
	color: var(--nest-lms-muted);
	font-size: 0.9em;
}

.nest-offline-label {
	display: inline-flex;
	gap: 8px;
	align-items: center;
	font-weight: 600;
}

.nest-offline-status {
	display: block;
	margin-top: 6px;
	color: var(--nest-lms-success);
	font-size: 0.9em;
}

/***** Theme title handling for generated viewer pages *****/
.nest-lms-lesson-page .wp-block-post-title,
.nest-lms-course-page .wp-block-post-title,
.nest-lms-lesson-page .entry-title,
.nest-lms-course-page .entry-title,
.nest-lms-lesson-page .page-title,
.nest-lms-course-page .page-title {
	display: none;
}

/***** Responsive *****/
@media (max-width: 782px) {
	.nest-course-main,
	.lesson-wrapper,
	.lesson-block {
		grid-template-columns: 1fr;
	}

	.lesson-left {
		position: static;
	}

	.nest-course-nav {
		justify-content: flex-start;
	}

	.nest-course-content,
	.nest-course-sidebar,
	.lesson-right,
	.lesson-left {
		padding: 16px;
	}

	.nest-td-cols-2,
	.nest-td-cols-3,
	.nest-td-cols-4 {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 480px) {
	:root {
		--nest-lms-page-width: calc(100vw - 32px);
	}

	.nest-course-wrapper,
	#nest-course-builder-form,
	.nest-builder-back,
	#course-builder-response,
	.nest-my-courses,
	.nest-course-list,
	.nest-teacher-dashboard {
		width: var(--nest-lms-page-width);
	}

	.nest-modal {
		padding: 12px;
	}

	.nest-modal-content {
		width: 100%;
		padding: 18px;
	}
}