.topic-layout {
	display: grid;
	grid-template-columns: 2fr 1fr;
	grid-template-rows: auto 1fr auto;
	gap: 1rem;
	padding-top: calc(80px + 2rem);
	grid-template-areas: 
		"header header"
		"visualization code"
		"controls controls";
}

/* Page Header */
.page-header {
	grid-area: header;
	text-align: center;
	padding: 1rem 0;
}

.page-title {
	font-size: 2rem;
	font-weight: 700;
	margin-bottom: 1rem;
	color: var(--text-primary);
}

.page-description {
	color: var(--text-secondary);
	font-size: 1rem;
	line-height: 1.6;
	max-width: 800px;
	margin: 0 auto;
}

/* Visualization Area */
.visualization-area {
	grid-area: visualization;
	background: var(--bg-secondary);
	border-radius: 0.75rem;
	padding: 2rem;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	gap: 1.5rem;
}

.visualization-container {
	margin-bottom: 2rem;
	overflow: hidden; 	
}

/* Code Area */
.code-area {
	grid-area: code;
	background: var(--bg-secondary);
	border-radius: 0.75rem;
	overflow: hidden;
	display: flex;
	flex-direction: column;
}

.code-header {
	padding: 1.5rem;
	border-bottom: 1px solid var(--bg-tertiary);
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.code-title {
	font-weight: 600;
	color: var(--accent-green);
}

.view-source-btn {
	text-decoration: none;
	font-size: 0.75rem;
	padding: 0.25rem 0.5rem;
}

.code-content {
	flex: 1;
	overflow-x: auto;
}

.code-content pre
{
	padding: 1rem;
	font-size: 0.875rem;
	height: 100%;
}

.code-line {
	display: block;
	margin: 0;
	line-height: 0.5;
	position: relative;
}

.code-line.highlight-line {
	background-color: rgba(6, 182, 212, 0.25) !important;
	box-shadow: 0 0 20px rgba(6, 182, 212, 0.5) !important;
	border-radius: 4px;
	transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

[data-theme="light"] .code-line.highlight-line {
	background-color: rgba(14, 165, 233, 0.3) !important;
	box-shadow: 0 0 20px rgba(14, 165, 233, 0.35) !important;
	border-radius: 4px;
}

/* Controls */
.controls-panel {
	grid-area: controls;
	background: var(--bg-secondary);
	border-radius: 0.75rem;
	padding: 2rem;
	display: flex;
	flex-direction: column;
	gap: 1.5rem;
}

.control-group {
	padding-bottom: 1.5rem;
	border-bottom: 1px solid var(--bg-tertiary);
}

.control-group h3 {
	margin-bottom: 1rem;
	color: var(--accent-cyan);
}

.control-row {
	display: flex;
	gap: 1rem;
	margin-bottom: 1rem;
}

.input-field {
	flex: 1;
	padding: 0.5rem 1rem;
	background: var(--bg-primary);
	border: 1px solid var(--bg-tertiary);
	border-radius: 0.375rem;
	color: var(--text-primary);
	font-family: var(--font-mono);
}

.input-field:focus {
	outline: none;
	border-color: var(--accent-cyan);
	box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.2);
}

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

.input-field[type="number"] {
	appearance: textfield;
	-moz-appearance: textfield;
}

.btn {
	padding: 0.5rem 1.5rem;
	background: var(--gradient-primary);
	border: none;
	border-radius: 0.375rem;
	color: white;
	cursor: pointer;
	transition: all 0.3s ease;
}

.btn:hover {
	transform: translateY(-2px);
}

.btn:active {
	transform: translateY(0);
}

.speed-control {
	display: flex;
	align-items: center;
	gap: 1rem;
	margin-bottom: 1.5rem;
}

.speed-slider {
	flex: 1;
	height: 4px;
	background: var(--bg-primary);
	outline: none;
	border-radius: 2px;
}

.speed-slider::-webkit-slider-thumb {
	width: 16px;
	height: 16px;
	background: var(--accent-cyan);
	cursor: pointer;
	border-radius: 50%;
}

.speed-labels {
	font-size: 0.75rem;
	color: var(--text-muted);
}

.control-group:nth-of-type(3) button {
	margin-right: 0.5rem;
	margin-bottom: 1rem;
}

.code-header {
	padding: 1.5rem;
	border-bottom: 1px solid var(--bg-tertiary);
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.code-title {
	font-weight: 600;
	color: var(--accent-green);
}

.view-source-btn {
	text-decoration: none;
	font-size: 0.75rem;
	padding: 0.25rem 0.5rem;
}

.code-content {
	flex: 1;
	overflow-x: auto;
}

.code-content pre
{
	padding: 1rem;
	font-size: 0.875rem;
	height: 100%;
}

.code-line {
	display: block;
	margin: 0;
	line-height: 0.5;
	position: relative;
}

.code-line.highlight-line {
	background-color: rgba(6, 182, 212, 0.25) !important;
	box-shadow: 0 0 20px rgba(6, 182, 212, 0.5) !important;
	border-radius: 4px;
	transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

[data-theme="light"] .code-line.highlight-line {
	background-color: rgba(14, 165, 233, 0.3) !important;
	box-shadow: 0 0 20px rgba(14, 165, 233, 0.35) !important;
	border-radius: 4px;
}

/* Explanation Box Styles */
.explanation-box {
    background: var(--bg-tertiary);
    border: 1px solid var(--accent-orange);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.explanation-title {
    color: var(--accent-orange);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.explanation-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Stats Styles */
.stats-display {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
}

.stat-item span:first-child {
    color: var(--text-secondary);
}

.stat-item span:last-child {
    color: var(--accent-cyan);
    font-family: var(--font-mono);
}

/* General Styles */
.array-container,
.tree-container,
.graph-container,
.list-container,
.stack-container,
.queue-container {
	width: 100%;
	height: 400px;
	border: 2px dashed var(--bg-tertiary);
	border-radius: 0.5rem;
	background: var(--bg-primary);
	box-sizing: border-box;
	padding: 2rem;
}

/* Specific container layouts */
.array-container,
.list-container,
.queue-container {
	display: flex;
	align-items: center;
	justify-content: safe center;
	flex-direction: row;
	overflow-x: auto;
}

.stack-container {
	display: flex;
	align-items: center;
	justify-content: safe center;
	flex-direction: column-reverse;
	overflow-y: auto;
}

/* Empty state message */
.empty-state {
	text-align: center;
	color: var(--text-muted);
	font-style: italic;
}

/* Info-box styling */
.array-info,
.tree-info,
.list-info,
.stack-info,
.queue-info {
	display: flex;
	justify-content: space-around;
	padding: 1.5rem;
	background: var(--bg-primary);
	border-radius: 0.5rem;
	margin-top: 1.5rem;
}

.info-item {
	text-align: center;
}

.info-label {
	display: block;
	font-size: 0.75rem;
	color: var(--text-muted);
	margin-bottom: 0.25rem;
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.info-value {
	font-size: 1.25rem;
	font-weight: 600;
	color: var(--accent-cyan);
	font-family: var(--font-mono);
}

/* Visual Representation */
.array-element,
.tree-node,
.graph-node,
.list-node,
.stack-element,
.queue-element {
	background: var(--bg-tertiary);
	border: 2px solid var(--bg-tertiary);
	border-radius: 0.375rem;
	padding: 0.5rem;
	margin: 0.25rem;
	color: var(--text-primary);
	font-family: var(--font-mono);
	font-weight: 500;
	transition: 0.3s ease;
	cursor: pointer;
	min-width: 40px;
	text-align: center;
	flex-shrink: 0;
}

.array-element:hover,
.tree-node:hover,
.graph-node:hover,
.list-node:hover,
.stack-element:hover,
.queue-element:hover {
	border-color: var(--accent-cyan);
	box-shadow: var(--glow-linear);
}

.array-element.active,
.tree-node.active,
.graph-node.active,
.list-node.active,
.stack-element.active,
.queue-element.active {
	background: var(--accent-cyan);
	color: var(--bg-primary);
	transform: scale(1.1);
}

.array-element.comparing,
.tree-node.comparing,
.graph-node.comparing,
.list-node.comparing,
.stack-element.comparing,
.queue-element.comparing {
	background: var(--accent-orange);
	color: var(--bg-primary);
	animation: pulse 0.5s infinite alternate;
}

.array-element.selected,
.list-node.selected,
.stack-element.selected,
.queue-element.selected {
	background: var(--accent-green);
	color: var(--bg-primary);
}

/* Array Styles */
.element-value {
	font-weight: 600;
}

.element-index {
	font-size: 0.75rem;
	color: var(--text-muted);
	margin-top: 0.25rem;
}

/* Linked List Styles */
.list-node {
	position: relative;
	display: flex;
	flex-direction: row;
	align-items: center;
	justify-content: center;
	min-width: 56px;
	margin-right: 42px;
}

.list-node::after {
	content: '→';
	position: absolute;
	right: -28px;
	top: 50%;
	transform: translateY(-50%);
	font-size: 1.05rem;
	color: var(--accent-cyan);
	font-weight: bold;
}

.list-node:last-child::after {
	content: '∅';
	color: var(--text-muted);
}

.node-data {
	background: var(--bg-tertiary);
	border: 1.4px solid var(--accent-cyan);
	border-radius: calc(0.375rem * 0.7);
	padding: calc(1rem * 0.7);
	margin-bottom: 0.175rem;
	font-weight: 600;
	min-width: 35px;
	text-align: center;
}

/* Stack Styles */
.stack-element {
	width: 120px;
	margin: 2px 0;
	position: relative;
}

.stack-element:last-child::after {
	content: '← TOP';
	position: absolute;
	right: -60px;
	top: 50%;
	transform: translateY(-50%);
	font-size: 0.75rem;
	color: var(--accent-cyan);
	font-weight: bold;
}

/* Queue Styles */
.queue-container::before {
	content: 'Front';
	position: absolute;
	left: 10px;
	top: 10px;
	font-size: 0.75rem;
	color: var(--accent-orange);
	font-family: var(--font-mono);
	font-weight: bold;
}

.queue-container::after {
	content: 'Rear';
	position: absolute;
	right: 10px;
	top: 10px;
	font-size: 0.75rem;
	color: var(--accent-green);
	font-family: var(--font-mono);
	font-weight: bold;
}

/* Responsive Styles */
@media (max-width: 1024px) {
	.topic-layout {
		grid-template-columns: 1fr;
		grid-template-areas: 
			"header"
			"visualization"
			"code"
			"controls";
	}
}

@media (max-width: 768px) {
	.control-row {
		flex-direction: column;
	}

	.control-row:last-of-type {
		display: flex;
		flex-direction: row;
		justify-content: center;
		align-items: center;
		gap: 1rem;
	}
	
	.animation-controls {
		flex-wrap: wrap;
	}
}