/**
 * SadhakaLMS Frontend Design System (Phase 1 Foundation).
 *
 * Self-contained design tokens and component styling for SadhakaLMS student interface.
 * Scoped strictly under .sadhakalms-wrapper to ensure zero conflict with Astra / Elementor.
 *
 * @package SadhakaLMS
 */

/* ==========================================================================
   1. DESIGN TOKENS & ROOT WRAPPER
   ========================================================================== */
.sadhakalms-wrapper {
	--sadhakalms-primary: #0d9488;
	--sadhakalms-primary-hover: #0f766e;
	--sadhakalms-secondary: #f97316;
	--sadhakalms-secondary-hover: #ea580c;
	--sadhakalms-bg: #ffffff;
	--sadhakalms-surface: #f8fafc;
	--sadhakalms-surface-alt: #f1f5f9;
	--sadhakalms-text-primary: #0f172a;
	--sadhakalms-text-secondary: #64748b;
	--sadhakalms-text-muted: #94a3b8;
	--sadhakalms-border: #e2e8f0;
	--sadhakalms-border-focus: #0d9488;

	--sadhakalms-radius-sm: 6px;
	--sadhakalms-radius-md: 10px;
	--sadhakalms-radius-lg: 16px;

	--sadhakalms-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
	--sadhakalms-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
	--sadhakalms-shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

	--sadhakalms-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
	
	font-family: var(--sadhakalms-font-sans);
	font-size: 16px;
	line-height: 1.6;
	color: var(--sadhakalms-text-primary);
	background-color: transparent;
	box-sizing: border-box;
	width: 100%;
}

.sadhakalms-wrapper * {
	box-sizing: border-box;
}

/* ==========================================================================
   2. CARD COMPONENT
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-card {
	background-color: var(--sadhakalms-bg);
	border: 1px solid var(--sadhakalms-border);
	border-radius: var(--sadhakalms-radius-md);
	box-shadow: var(--sadhakalms-shadow-sm);
	padding: 20px;
	margin-bottom: 24px;
	transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

@media (min-width: 768px) {
	.sadhakalms-wrapper .sadhakalms-card {
		padding: 28px;
	}
}

.sadhakalms-wrapper .sadhakalms-card:hover {
	box-shadow: var(--sadhakalms-shadow-md);
}

.sadhakalms-wrapper .sadhakalms-card-header {
	border-bottom: 1px solid var(--sadhakalms-border);
	padding-bottom: 16px;
	margin-bottom: 20px;
}

.sadhakalms-wrapper .sadhakalms-card-title {
	font-size: 20px;
	font-weight: 700;
	color: var(--sadhakalms-text-primary);
	margin: 0;
}

/* ==========================================================================
   3. BUTTON COMPONENTS (44px min-height for touch accessibility)
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	min-height: 44px;
	padding: 10px 20px;
	font-size: 16px;
	font-weight: 600;
	border-radius: var(--sadhakalms-radius-sm);
	text-decoration: none;
	cursor: pointer;
	border: 1px solid transparent;
	transition: all 0.2s ease;
	white-space: nowrap;
	line-height: 1.25;
}

.sadhakalms-wrapper .sadhakalms-btn-primary {
	background-color: var(--sadhakalms-primary);
	color: #ffffff;
}

.sadhakalms-wrapper .sadhakalms-btn-primary:hover,
.sadhakalms-wrapper .sadhakalms-btn-primary:focus {
	background-color: var(--sadhakalms-primary-hover);
	color: #ffffff;
}

.sadhakalms-wrapper .sadhakalms-btn-secondary {
	background-color: transparent;
	color: var(--sadhakalms-primary);
	border-color: var(--sadhakalms-primary);
}

.sadhakalms-wrapper .sadhakalms-btn-secondary:hover,
.sadhakalms-wrapper .sadhakalms-btn-secondary:focus {
	background-color: var(--sadhakalms-primary);
	color: #ffffff;
}

.sadhakalms-wrapper .sadhakalms-btn-accent {
	background-color: var(--sadhakalms-secondary);
	color: #ffffff;
}

.sadhakalms-wrapper .sadhakalms-btn-accent:hover {
	background-color: var(--sadhakalms-secondary-hover);
}

.sadhakalms-wrapper .sadhakalms-btn-full {
	width: 100%;
}

.sadhakalms-wrapper .sadhakalms-btn:disabled,
.sadhakalms-wrapper .sadhakalms-btn.disabled {
	opacity: 0.6;
	cursor: not-allowed;
}

/* ==========================================================================
   4. BADGE COMPONENTS
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-badge {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 4px 12px;
	font-size: 13px;
	font-weight: 600;
	border-radius: 9999px;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	line-height: 1.2;
}

/* Fee Status Badges */
.sadhakalms-wrapper .sadhakalms-badge-fee-paid {
	background-color: #dcfce7;
	color: #15803d;
}

.sadhakalms-wrapper .sadhakalms-badge-fee-partial {
	background-color: #fef3c7;
	color: #b45309;
}

.sadhakalms-wrapper .sadhakalms-badge-fee-overdue {
	background-color: #fee2e2;
	color: #b91c1c;
}

/* Progress & Access Badges */
.sadhakalms-wrapper .sadhakalms-badge-active {
	background-color: #ccfbf1;
	color: #0f766e;
}

.sadhakalms-wrapper .sadhakalms-badge-completed {
	background-color: #e0e7ff;
	color: #4338ca;
}

.sadhakalms-wrapper .sadhakalms-badge-suspended {
	background-color: #f3f4f6;
	color: #4b5563;
}

/* ==========================================================================
   5. PROGRESS BAR COMPONENT
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-progress-wrap {
	width: 100%;
	margin: 16px 0;
}

.sadhakalms-wrapper .sadhakalms-progress-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 6px;
	font-size: 14px;
	font-weight: 600;
	color: var(--sadhakalms-text-secondary);
}

.sadhakalms-wrapper .sadhakalms-progress-bar {
	width: 100%;
	height: 10px;
	background-color: var(--sadhakalms-surface-alt);
	border-radius: 9999px;
	overflow: hidden;
}

.sadhakalms-wrapper .sadhakalms-progress-fill {
	height: 100%;
	background-color: var(--sadhakalms-primary);
	border-radius: 9999px;
	transition: width 0.4s ease;
}

/* ==========================================================================
   6. FORM INPUTS (44px Height & Accessible Focus)
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-form-group {
	margin-bottom: 20px;
}

.sadhakalms-wrapper .sadhakalms-form-label {
	display: block;
	font-size: 16px;
	font-weight: 600;
	color: var(--sadhakalms-text-primary);
	margin-bottom: 8px;
}

.sadhakalms-wrapper .sadhakalms-input,
.sadhakalms-wrapper .sadhakalms-textarea,
.sadhakalms-wrapper .sadhakalms-select {
	width: 100%;
	min-height: 44px;
	padding: 10px 14px;
	font-size: 16px;
	font-family: inherit;
	color: var(--sadhakalms-text-primary);
	background-color: #ffffff;
	border: 1px solid var(--sadhakalms-border);
	border-radius: var(--sadhakalms-radius-sm);
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sadhakalms-wrapper .sadhakalms-input:focus,
.sadhakalms-wrapper .sadhakalms-textarea:focus,
.sadhakalms-wrapper .sadhakalms-select:focus {
	border-color: var(--sadhakalms-border-focus);
	outline: none;
	box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.2);
}

.sadhakalms-wrapper .sadhakalms-textarea {
	min-height: 120px;
	resize: vertical;
}

/* ==========================================================================
   7. ALERT BOXES (Error, Warning, Success, Info)
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-alert {
	padding: 16px 20px;
	border-radius: var(--sadhakalms-radius-sm);
	margin-bottom: 20px;
	font-size: 16px;
	line-height: 1.5;
	border: 1px solid;
	display: flex;
	align-items: flex-start;
	gap: 12px;
}

.sadhakalms-wrapper .sadhakalms-alert-success {
	background-color: rgba(16, 185, 129, 0.08);
	border-color: rgba(16, 185, 129, 0.3);
	color: #065f46;
}

.sadhakalms-wrapper .sadhakalms-alert-warning {
	background-color: rgba(245, 158, 11, 0.08);
	border-color: rgba(245, 158, 11, 0.3);
	color: #92400e;
}

.sadhakalms-wrapper .sadhakalms-alert-error {
	background-color: rgba(239, 68, 68, 0.08);
	border-color: rgba(239, 68, 68, 0.3);
	color: #991b1b;
}

.sadhakalms-wrapper .sadhakalms-alert-info {
	background-color: rgba(14, 165, 233, 0.08);
	border-color: rgba(14, 165, 233, 0.3);
	color: #075985;
}

/* ==========================================================================
   8. LESSON CONTENT TYPOGRAPHY (Line height 1.75, Max-width 72ch)
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-lesson-content {
	font-size: 16px;
	line-height: 1.75;
	color: var(--sadhakalms-text-primary);
	max-width: 72ch;
	margin: 0 auto;
}

@media (min-width: 768px) {
	.sadhakalms-wrapper .sadhakalms-lesson-content {
		font-size: 17px;
	}
}

.sadhakalms-wrapper .sadhakalms-lesson-content h1 {
	font-size: 28px;
	font-weight: 800;
	line-height: 1.25;
	margin: 28px 0 16px;
	color: var(--sadhakalms-text-primary);
}

.sadhakalms-wrapper .sadhakalms-lesson-content h2 {
	font-size: 22px;
	font-weight: 700;
	line-height: 1.3;
	margin: 24px 0 14px;
	color: var(--sadhakalms-text-primary);
}

.sadhakalms-wrapper .sadhakalms-lesson-content h3 {
	font-size: 18px;
	font-weight: 700;
	line-height: 1.4;
	margin: 20px 0 12px;
	color: var(--sadhakalms-text-primary);
}

.sadhakalms-wrapper .sadhakalms-lesson-content p {
	margin: 0 0 20px;
}

.sadhakalms-wrapper .sadhakalms-lesson-content ul,
.sadhakalms-wrapper .sadhakalms-lesson-content ol {
	margin: 0 0 20px;
	padding-left: 28px;
}

.sadhakalms-wrapper .sadhakalms-lesson-content li {
	margin-bottom: 8px;
}

.sadhakalms-wrapper .sadhakalms-lesson-content blockquote {
	border-left: 4px solid var(--sadhakalms-primary);
	margin: 24px 0;
	padding: 12px 20px;
	background-color: var(--sadhakalms-surface);
	color: var(--sadhakalms-text-secondary);
	font-style: italic;
	border-radius: 0 var(--sadhakalms-radius-sm) var(--sadhakalms-radius-sm) 0;
}

/* ==========================================================================
   9. PDF EMBED CONTAINER & VIDEO CONTAINER
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-pdf-container {
	width: 100%;
	border: 1px solid var(--sadhakalms-border);
	border-radius: var(--sadhakalms-radius-md);
	overflow: hidden;
	margin: 24px 0;
	background-color: var(--sadhakalms-surface);
	box-shadow: var(--sadhakalms-shadow-md);
	display: flex;
	flex-direction: column;
}

.sadhakalms-wrapper .sadhakalms-pdf-reader-bar {
	background: #1e293b;
	color: #ffffff;
	padding: 10px 16px;
	display: flex;
	align-items: center;
	justify-content: space-between;
	font-size: 13px;
	font-weight: 600;
	border-bottom: 1px solid #334155;
}

.sadhakalms-wrapper .sadhakalms-pdf-reader-badge {
	background: rgba(13, 148, 136, 0.2);
	color: #2dd4bf;
	border: 1px solid rgba(45, 212, 191, 0.4);
	padding: 2px 8px;
	border-radius: 9999px;
	font-size: 11px;
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.sadhakalms-wrapper .sadhakalms-pdf-viewer-frame {
	width: 100%;
	height: 480px;
	border: none;
	background: #f8fafc;
}

@media (min-width: 768px) {
	.sadhakalms-wrapper .sadhakalms-pdf-viewer-frame {
		height: 640px;
	}
}

.sadhakalms-wrapper .sadhakalms-pdf-iframe {
	width: 100%;
	height: 100%;
	border: none;
}

.sadhakalms-wrapper .sadhakalms-video-responsive {
	position: relative;
	padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
	height: 0;
	overflow: hidden;
	border-radius: var(--sadhakalms-radius-md);
	margin: 20px 0;
	background: #000000;
}

.sadhakalms-wrapper .sadhakalms-video-responsive iframe,
.sadhakalms-wrapper .sadhakalms-video-responsive video {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	border: 0;
}

/* ==========================================================================
   10. NAVIGATION CONTROLS (Previous & Next Lesson)
   ========================================================================== */
.sadhakalms-wrapper .sadhakalms-lesson-nav {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 16px;
	padding: 24px 0;
	margin-top: 36px;
	border-top: 1px solid var(--sadhakalms-border);
}

.sadhakalms-wrapper .sadhakalms-nav-prev,
.sadhakalms-wrapper .sadhakalms-nav-next {
	display: flex;
	flex-direction: column;
	text-decoration: none;
}

.sadhakalms-wrapper .sadhakalms-nav-label {
	font-size: 13px;
	text-transform: uppercase;
	font-weight: 600;
	color: var(--sadhakalms-text-muted);
}

.sadhakalms-wrapper .sadhakalms-nav-title {
	font-size: 16px;
	font-weight: 600;
	color: var(--sadhakalms-text-primary);
}

.sadhakalms-wrapper .sadhakalms-nav-prev:hover .sadhakalms-nav-title,
.sadhakalms-wrapper .sadhakalms-nav-next:hover .sadhakalms-nav-title {
	color: var(--sadhakalms-primary);
}

/* ==========================================================================
   11. STUDENT PORTAL & COURSE PLAYER
   ========================================================================== */
.sadhakalms-portal-wrap,
.sadhakalms-player-container {
	max-width: 1180px;
	margin: 24px auto;
	color: var(--sadhakalms-text-primary);
}

.sadhakalms-auth-gate {
	display: flex;
	justify-content: center;
	padding: 48px 16px;
}

.sadhakalms-auth-card,
.sadhakalms-empty-state-box {
	width: 100%;
	max-width: 520px;
	padding: 28px;
	background: var(--sadhakalms-surface);
	border: 1px solid var(--sadhakalms-border);
	border-radius: var(--sadhakalms-radius-md);
	box-shadow: var(--sadhakalms-shadow-md);
	text-align: center;
}

.sadhakalms-auth-icon,
.sadhakalms-avatar-circle {
	width: 48px;
	height: 48px;
	border-radius: 50%;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	background: var(--sadhakalms-primary-soft);
	color: var(--sadhakalms-primary-dark);
	font-weight: 800;
}

.sadhakalms-portal-header,
.sadhakalms-player-topbar,
.sadhakalms-support-footer {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	padding: 18px 20px;
	background: var(--sadhakalms-surface);
	border: 1px solid var(--sadhakalms-border);
	border-radius: var(--sadhakalms-radius-md);
	box-shadow: var(--sadhakalms-shadow-sm);
}

.sadhakalms-user-info,
.sadhakalms-support-links,
.sadhakalms-fee-row {
	display: flex;
	align-items: center;
	gap: 12px;
}

.sadhakalms-section-title {
	margin: 28px 0 14px;
	font-size: 20px;
	font-weight: 800;
}

.sadhakalms-courses-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
	gap: 18px;
}

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

.sadhakalms-course-card.is-blocked {
	border-color: #fecdd3;
	background: #fff7f7;
}

.sadhakalms-card-thumb {
	position: relative;
	aspect-ratio: 16 / 9;
	background: #e2e8f0;
	overflow: hidden;
}

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

.sadhakalms-thumb-placeholder {
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 20px;
	font-weight: 800;
	text-align: center;
	background: linear-gradient(135deg, #ecfeff, #f8fafc);
}

.sadhakalms-badge-float {
	position: absolute;
	top: 12px;
	right: 12px;
	padding: 5px 9px;
	border-radius: 9999px;
	font-size: 11px;
	font-weight: 800;
	background: #ffffff;
	box-shadow: var(--sadhakalms-shadow-sm);
}

.sadhakalms-badge-float.badge-active {
	color: #047857;
}

.sadhakalms-badge-float.badge-suspended {
	color: #be123c;
}

.sadhakalms-card-body {
	padding: 18px;
}

.sadhakalms-course-name {
	margin: 0 0 12px;
	font-size: 18px;
	line-height: 1.3;
}

.sadhakalms-fee-status-bar,
.sadhakalms-blocked-warning {
	padding: 12px;
	background: #f8fafc;
	border: 1px solid var(--sadhakalms-border);
	border-radius: var(--sadhakalms-radius-sm);
}

.sadhakalms-fee-row {
	justify-content: space-between;
}

.sadhakalms-card-actions {
	margin-top: 14px;
}

.sadhakalms-btn-primary,
.sadhakalms-btn-play,
.sadhakalms-btn-pay-now,
.sadhakalms-btn-outline {
	min-height: 42px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	padding: 10px 14px;
	border-radius: var(--sadhakalms-radius-sm);
	font-weight: 800;
	text-decoration: none;
}

.sadhakalms-btn-primary,
.sadhakalms-btn-play,
.sadhakalms-btn-pay-now {
	width: 100%;
	background: var(--sadhakalms-primary);
	color: #ffffff;
}

.sadhakalms-btn-pay-now {
	background: #be123c;
}

.sadhakalms-btn-outline {
	border: 1px solid var(--sadhakalms-border-strong);
	color: var(--sadhakalms-text-primary);
	background: #ffffff;
}

.sadhakalms-player-body {
	display: grid;
	grid-template-columns: 300px minmax(0, 1fr);
	gap: 18px;
	margin-top: 18px;
}

.sadhakalms-player-sidebar,
.sadhakalms-player-stage {
	background: var(--sadhakalms-surface);
	border: 1px solid var(--sadhakalms-border);
	border-radius: var(--sadhakalms-radius-md);
	box-shadow: var(--sadhakalms-shadow-sm);
}

.sadhakalms-player-sidebar {
	padding: 16px;
	align-self: start;
}

.sadhakalms-player-stage {
	padding: 20px;
	min-width: 0;
}

.sadhakalms-lessons-sublist {
	margin: 8px 0 18px;
	padding: 0;
	list-style: none;
}

.sadhakalms-lesson-item {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 8px;
	padding: 9px 10px;
	border-radius: var(--sadhakalms-radius-sm);
}

.sadhakalms-lesson-item a {
	color: inherit;
	text-decoration: none;
	font-weight: 650;
}

.sadhakalms-lesson-item.is-active {
	background: var(--sadhakalms-primary-soft);
	color: var(--sadhakalms-primary-dark);
}

.sadhakalms-lesson-tag {
	flex-shrink: 0;
	font-size: 10px;
	font-weight: 800;
	color: var(--sadhakalms-text-muted);
}

.sadhakalms-stage-header h2 {
	margin-top: 0;
}

@media (max-width: 800px) {
	.sadhakalms-portal-header,
	.sadhakalms-player-topbar,
	.sadhakalms-support-footer {
		align-items: flex-start;
		flex-direction: column;
	}

	.sadhakalms-player-body {
		grid-template-columns: 1fr;
	}
}