/* ================= BASE THEME ================= */
:root {
	/* Primary colors */
	--primary-color: #5e4b8b; /* Rich purple */
	--primary-light: #8a77b5; /* Lighter purple */
	--primary-dark: #3b2e63; /* Darker purple */

	/* Secondary colors */
	--secondary-color: #444444;
	--secondary-dark: #222222;

	/* Text colors */
	--text-color: #333333;
	--light-text: #666666;
	--editor-text: #d4d4d4;
	--white-text: #ffffff;

	/* Background colors */
	--bg-color: #f8f7fc; /* Subtle purple tint */
	--panel-bg: #ffffff;
	--code-bg: #f7f5fa; /* Very light purple */
	--editor-bg: #1e1e1e;
	--editor-highlight: #303030;

	/* Border colors */
	--border-color: #e0e0e0;

	/* Status colors */
	--info-color: #7a93fe;
	--info-color-dark: #4a6bfd;
	--success-color: #58b890; /* Muted teal green */
	--success-color-dark: #3d8d6a;
	--success-color-light: #a3e6c8;
	--error-color: #cb6e75; /* Muted red */

	/* Special colors */
	--primary-bg-light: rgba(94, 75, 139, 0.05);
	--primary-bg-medium: rgba(94, 75, 139, 0.1);
	--primary-bg-instruction: rgba(94, 75, 139, 0.05);
	--success-bg-light: rgba(88, 184, 144, 0.1);
	--success-bg-medium: rgba(88, 184, 144, 0.4);
	--error-bg-light: rgba(244, 244, 244, 0.8);
	--modal-bg: rgba(0, 0, 0, 0.5);

	/* Additional colors */
	--badge-bg: var(--success-color);
	--black-transparent-10: rgba(0, 0, 0, 0.1);
	--black-transparent-20: rgba(0, 0, 0, 0.2);
	--black-transparent-05: rgba(0, 0, 0, 0.05);
	--white-transparent-80: rgba(255, 255, 255, 0.8);
	--primary-transparent-05: rgba(94, 75, 139, 0.05);
	--primary-transparent-10: rgba(94, 75, 139, 0.1);
	--success-transparent-10: rgba(88, 184, 144, 0.1);
	--success-transparent-40: rgba(88, 184, 144, 0.4);

	/* Typography */
	--font-main: "Playfair Display", "Inter", "Segoe UI", Roboto, sans-serif;
	--font-code: "JetBrains Mono", "Fira Code", monospace;

	/* Effects */
	--shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
	--shadow-modal: 0 4px 16px rgba(0, 0, 0, 0.15);
	--text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.05);

	/* Sizes and spacing */
	--header-height: 60px;
	--sidebar-width: 240px;
	--border-radius-sm: 4px;
	--border-radius-md: 6px;
	--border-radius-lg: 8px;
	--border-accent: 4px;
	--spacing-xs: 0.5rem;
	--spacing-sm: 0.75rem;
	--spacing-md: 1rem;
	--spacing-lg: 1.5rem;
	--spacing-xl: 2rem;
}

/* Reset */
* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

/* Base styles */
body {
	font-family: var(--font-main);
	background-color: var(--bg-color);
	color: var(--text-color);
	line-height: 1.6;
}

.app-container {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
}

code {
	font-family: var(--font-code);
}

/* Header Styles */
.header {
	background-color: var(--panel-bg);
	padding: var(--spacing-md) var(--spacing-xl);
	display: flex;
	justify-content: space-between;
	align-items: center;
	box-shadow: var(--shadow);
	position: sticky;
	top: 0;
	z-index: 100;
	height: var(--header-height);
}

.logo {
	display: flex;
	align-items: center;
	gap: 0.6rem;
}

.logo h1 {
	color: var(--text-color);
	font-size: 1.1rem;
	line-height: 0.8;
	font-weight: 900;
}

.logo h1 span {
	color: var(--primary-color);
}

.main-nav ul {
	display: flex;
	list-style: none;
	gap: var(--spacing-md);
}

/* Main Content Layout */
.main-content {
	display: flex;
	flex: 1;
	min-height: calc(100vh - var(--header-height));
}

.sidebar {
	width: var(--sidebar-width);
	background-color: var(--panel-bg);
	border-right: 1px solid var(--border-color);
	padding: var(--spacing-lg) var(--spacing-md);
	overflow-y: auto;
	height: calc(100vh - var(--header-height));
	position: sticky;
	top: var(--header-height);
}

.content-area {
	flex: 1;
	padding: var(--spacing-xl);
	max-width: calc(100% - var(--sidebar-width));
}

/* Module List Styles */
.module-list {
	margin-bottom: var(--spacing-xl);
}

.module-list h3 {
	margin-bottom: var(--spacing-md);
	font-size: 0.7rem;
	letter-spacing: 1px;
	font-weight: 800;
	padding: var(--spacing-xs) var(--spacing-md);
	text-transform: uppercase;
	border-left: var(--border-accent) solid var(--primary-color);
	border-radius: 2px;
}

.module-list-item {
	padding: var(--spacing-sm) var(--spacing-md);
	margin-bottom: var(--spacing-xs);
	border-radius: var(--border-radius-md);
	cursor: pointer;
	transition: background-color 0.2s;
}

.module-list-item:hover {
	background-color: var(--primary-bg-light);
}

.module-list-item.active {
	background-color: var(--primary-bg-medium);
	color: var(--primary-color);
}

.module-list-item.completed {
	position: relative;
	padding-right: 2rem;
}

.module-list-item.completed::after {
	content: "✓";
	position: absolute;
	right: 0.8rem;
	top: 50%;
	transform: translateY(-50%);
	color: var(--primary-color);
	font-weight: bold;
}

/* Lesson Container */
.lesson-container {
	display: flex;
	flex-flow: column;
	align-items: stretch;
	justify-content: flex-start;
	gap: 1.4rem;
	background-color: var(--panel-bg);
	border-radius: var(--border-radius-lg);
	box-shadow: var(--shadow);
	padding: var(--spacing-xl);
	height: 100%;
	margin-bottom: var(--spacing-xl);
}

#lesson-title {
	color: var(--primary-dark);
}

.lesson-description {
	color: var(--text-color);
	line-height: 1.7;
	font-size: 1.1rem;
	width: 72%;
}

.lesson-description pre {
	display: inline-block;
	font-family: var(--font-code);
	font-size: 0.9rem;
	background-color: var(--code-bg);
	padding: var(--spacing-xl) calc(var(--spacing-xl) + var(--spacing-md)) var(--spacing-xl) var(--spacing-xl);
	border-radius: var(--border-radius-md);
	overflow-x: auto;
	margin-bottom: var(--spacing-lg);
}

/* Challenge Container */
.challenge-container {
	display: flex;
	flex: 1;
	flex-direction: column;
	gap: var(--spacing-lg);
	margin-bottom: var(--spacing-xl);
}

@media (min-width: 1024px) {
	.challenge-container {
		flex-direction: row;
	}

	.preview-area,
	.editor-container {
		width: 48%;
	}
}

.preview-area {
	background-color: var(--panel-bg);
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius-md);
	padding: var(--spacing-md);
	overflow: hidden;
	min-height: 300px;
	display: flex;
	justify-content: center;
	align-items: center;
}

.editor-container {
	display: flex;
	flex-direction: column;
	gap: var(--spacing-md);
}

.task-instruction {
	background-color: var(--primary-bg-instruction);
	border-left: var(--border-accent) solid var(--primary-color);
	padding: var(--spacing-md);
	border-radius: var(--border-radius-sm);
}

.code-editor {
	display: flex;
	flex-direction: column;
	flex: 1;
	position: relative;
	border: 1px solid var(--border-color);
	border-radius: var(--border-radius-md);
	overflow: hidden;
}

.editor-header {
	background-color: var(--code-bg);
	padding: var(--spacing-xs) var(--spacing-md);
	display: flex;
	justify-content: space-between;
	min-height: 2rem;
	align-items: center;
	font-size: 0.9rem;
	color: var(--light-text);
	border-bottom: 1px solid var(--border-color);
}

.editor-content {
	display: flex;
	flex: 1;
	flex-direction: column;
	background-color: var(--editor-bg);
	color: var(--editor-text);
	padding: 0;
	font-family: var(--font-code);
	font-size: 14px;
	line-height: 1.5;
	cursor: text; /* Add text cursor to indicate it's editable */
}

/* Style for when editor is clicked - pulse effect */
.editor-focused {
	animation: focus-pulse 0.3s ease;
}

/* Pulse animation */
@keyframes focus-pulse {
	0% {
		background-color: var(--editor-bg);
	}
	50% {
		background-color: var(--editor-highlight);
	}
	100% {
		background-color: var(--editor-bg);
	}
}

.code-input {
	flex: 1;
	display: block;
	background-color: transparent;
	color: var(--editor-text);
	border: none;
	width: 100%;
	min-height: 14px; /* Ensure minimum height */
	font-family: var(--font-code);
	font-size: 14px;
	line-height: 1.5;
	padding: var(--spacing-md);
	outline: none;
	overflow-y: scroll; /* Ensure scrolling works */
	resize: none; /* Disable textarea resize */
	caret-color: var(--primary-light);
	transition: background-color 0.2s ease;
}

/* Controls */
.controls {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-top: var(--spacing-lg);
}

.level-indicator {
	font-size: 0.9rem;
	color: var(--light-text);
}

/* Buttons */
.btn {
	padding: var(--spacing-xs) var(--spacing-md);
	border-radius: var(--border-radius-sm);
	border: 1px solid var(--border-color);
	background-color: var(--panel-bg);
	color: var(--text-color);
	cursor: pointer;
	font-family: var(--font-main);
	font-size: 0.9rem;
	transition:
		background,
		color 0.2s;
	text-shadow: var(--text-shadow);
}

.btn:hover {
	background-color: var(--code-bg);
}

.btn-primary {
	background-color: var(--primary-color);
	color: var(--white-text);
	border: 1px solid var(--primary-dark);
}

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

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

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

.btn img {
	width: 0.8rem;
	height: 0.8rem;
	margin-right: 0.3rem;
}

/* Button states */
.btn-disabled {
	opacity: 0.6;
	cursor: not-allowed;
}

.success {
	background-color: var(--success-color);
	border: 1px solid var(--success-color);
}

.success:hover,
.success:focus {
	background-color: var(--success-color-dark);
	border: 1px solid var(--success-color-dark);
}

.validation-indicators-container {
	/*position: absolute;*/
	/*top: 1rem;*/
	/*right: 8rem;*/
	display: flex;
	gap: 5px;
	z-index: 5;
}

.validation-success-indicator {
	background-color: var(--success-color);
	color: var(--white-text);
	width: 20px;
	height: 20px;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 12px;
}

/* Module selector button with progress */
#module-selector-btn {
	overflow: hidden;
}

/* Modal */
.modal-container {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: var(--modal-bg);
	display: flex;
	justify-content: center;
	align-items: center;
	z-index: 1000;
}

.modal {
	background-color: var(--panel-bg);
	border-radius: var(--border-radius-lg);
	box-shadow: var(--shadow-modal);
	width: 90%;
	max-width: 600px;
	max-height: 80vh;
	overflow-y: auto;
}

.modal-header {
	padding: var(--spacing-md);
	border-bottom: 1px solid var(--border-color);
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.modal-content {
	padding: var(--spacing-lg);
}

.modal-content ol,
.modal-content ul {
	margin-left: var(--spacing-lg);
	margin-bottom: var(--spacing-md);
}

.modal-content h3 {
	margin-bottom: 0.2rem;
	font-size: 1.2rem;
}

.modal-content h4 {
	margin-bottom: 0.1rem;
	font-size: 1rem;
}

.modal-content p {
	margin-bottom: var(--spacing-md);
}

.modal-close {
	background: none;
	border: none;
	font-size: 1.5rem;
	cursor: pointer;
	color: var(--light-text);
}

/* Feedback styles */
.feedback-success {
	position: absolute;
	bottom: 0.8rem;
	right: 1.6rem;
	color: var(--success-color-light);
	font-weight: 800;
	padding: var(--spacing-xs);
	border-radius: var(--border-radius-sm);
	background-color: var(--success-bg-medium);
	border-left: 3px solid var(--success-color);
	transition: all 0.3s ease;
}

.feedback-error {
	position: absolute;
	bottom: 0.8rem;
	right: 1.6rem;
	color: var(--text-color);
	font-weight: 500;
	padding: var(--spacing-xs);
	border-radius: var(--border-radius-sm);
	background-color: var(--error-bg-light);
	border-left: 3px solid var(--white-text);
}

.feedback-error kbd {
	background-color: var(--error-bg-light);
	color: var(--text-color);
	border-radius: var(--border-radius-sm);
	padding: calc(var(--spacing-xs) / 2);
	font-size: 0.7rem;
	letter-spacing: -0.75px;
}

/* Success states */
.success-highlight {
	border-left: var(--border-accent) solid var(--success-color);
	transition: all 0.3s ease;
}

.success-text {
	color: var(--success-color);
	transition: color 0.3s ease;
}

.success-instruction {
	background-color: var(--success-bg-light);
	border-left: var(--border-accent) solid var(--success-color);
	padding: var(--spacing-md);
	border-radius: var(--border-radius-sm);
}

/* Utility classes */
.hidden {
	display: none;
}

/* Completed lesson indicators */
.completion-badge {
	display: inline-block;
	margin-left: 0.8rem;
	padding: 0.2rem 0.6rem;
	font-size: 0.7rem;
	font-weight: 600;
	color: var(--white-text);
	background-color: var(--badge-bg);
	border-radius: 1rem;
	vertical-align: middle;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

/* Update run button styling when in re-run state */
#run-btn.re-run {
	background-color: var(--success-color);
	border-color: var(--success-color);
}

#run-btn.re-run:hover {
	background-color: var(--success-color-dark);
	border-color: var(--success-color-dark);
}