:root {
	/* Palette: Slate-like colors */
	--bg-body: #0f172a;
	--bg-body: #020617;
	--bg-header: rgba(15, 23, 42, 0.5);
	--bg-card: rgba(30, 41, 59, 0.6);
	--bg-card-solid: #1e293b;
	--bg-input: #334155;
	--bg-output: #020617;
	--bg-output: #0f172a;
	/* Very dark slate */

	/* Text Colors */
	--text-main: #f8fafc;
	--text-muted: #a8b2c2;
	--text-dim: #808d9f;

	/* Accents */
	--primary: #0284c7;
	/* Sky 600 */
	--primary-hover: #0ea5e9;
	/* Sky 500 */
	--border-color: #1e293b;
	--border-hover: #38bdf8;

	/* Danger */
	--danger: #ef4444;
	--danger-bg: rgba(239, 68, 68, 0.1);

	/* Success */
	--success: #22c55e;
	--success-bg: rgba(34, 197, 94, 0.2);

	/* Spacing & Sizing */
	--radius-md: 0.5rem;
	--radius-lg: 0.75rem;
	--radius-full: 9999px;
	--header-height: 4rem;
}

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



body {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	background-color: var(--bg-body);
	color: var(--text-main);
	height: 100vh;
	display: flex;
	flex-direction: column;
	overflow: hidden;
	text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Scrollbars */
::-webkit-scrollbar {
	width: 8px;
	height: 8px;
}

::-webkit-scrollbar-track {
	background: transparent;
}

::-webkit-scrollbar-thumb {
	background: var(--bg-input);
	border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
	background: var(--text-dim);
}

/* Icons */
svg.icon {
	width: 1.25rem;
	height: 1.25rem;
	display: block;
}

svg.icon-lg {
	width: 3rem;
	height: 3rem;
}

svg.icon-sm {
	width: 0.875rem;
	height: 0.875rem;
}

/* Utility Helpers */
.hidden {
	display: none !important;
}

.flex {
	display: flex;
}

.items-center {
	align-items: center;
}

.justify-between {
	justify-content: space-between;
}

.gap-2 {
	gap: 0.5rem;
}

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

/* -----------------------------------------------------------------------------
		   2. Layout Components
		   ----------------------------------------------------------------------------- */

/* Header */
header {
	height: var(--header-height);
	border-bottom: 1px solid var(--border-color);
	background-color: var(--bg-header);
	backdrop-filter: blur(12px);
	-webkit-backdrop-filter: blur(12px);
	z-index: 10;
	flex-shrink: 0;
}

.header-inner {
	max-width: 80rem;
	margin: 0 auto;
	padding: 0 0.5rem;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.logo-area {
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.logo-box {
	background-color: var(--primary);
	padding: 6px;
	border-radius: var(--radius-md);
	box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
	display: flex;
	align-items: center;
	justify-content: center;

	svg{
		filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, 0.8));
	}
}

.app-title {
	font-size: 1.25rem;
	font-weight: 700;
	background: linear-gradient(to right, #38bdf8, #818cf8);
	-webkit-background-clip: text;
	color: transparent;
}

/* Main Container */
main {
	flex: 1;
	width: 100%;
	max-width: 80rem;
	margin: 0 auto;
	padding: 0.5rem;
	overflow: hidden;
}

.grid-layout {
	display: grid;
	grid-template-columns: 320px 1fr;
	gap: 0.5rem;
	height: 100%;
}

@media (max-width: 640px) {
	body {
		overflow: auto;
	}

	main {
		height: auto;
		overflow: visible;
	}

	.grid-layout {
		grid-template-columns: 1fr;
		height: auto;
	}

	.sidebar {
		height: auto;
		padding-right: 0;
		padding-bottom: 1em;
	}

	.output-panel-container {
		height: 60vh;
	}
}

.sidebar {
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
	overflow-y: auto;
	padding-right: 4px;
}

.card {
	background-color: var(--bg-card);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-lg);
	padding: 0.55rem;
	box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
	backdrop-filter: blur(4px);
}

.card-title {
	font-size: 0.75rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.05em;
	color: var(--text-main);
	margin-bottom: 1rem;
}

/* Toggle Switch */
.toggle-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	cursor: pointer;
	user-select: none;
}

.toggle-label {
	font-size: 0.875rem;
	font-weight: 500;
	transition: color 0.2s;
}

.toggle-row:hover .toggle-label {
	color: #7dd3fc;
}

.toggle-switch {
	position: relative;
	width: 2.75rem;
	height: 1.5rem;
	background-color: var(--bg-input);
	border-radius: var(--radius-full);
	transition: background-color 0.2s;
}

.toggle-switch::after {
	content: '';
	position: absolute;
	top: 2px;
	left: 2px;
	width: 1.25rem;
	height: 1.25rem;
	background-color: white;
	border-radius: 50%;
	transition: transform 0.2s;
}

input[type="checkbox"]:checked+.toggle-switch {
	background-color: var(--primary);
}

input[type="checkbox"]:checked+.toggle-switch::after {
	transform: translateX(1.25rem);
}

/* Style Buttons Grid */
.style-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 0.5rem;
	margin-top: 0.5rem;
}

.btn-style {
	padding: 0.35rem;
	font-size: 0.75rem;
	border: 1px solid var(--bg-input);
	background-color: var(--bg-card-solid);
	color: var(--text-muted);
	border-radius: 0.25rem;
	cursor: pointer;
	transition: all 0.2s;
}

.btn-style:hover {
	border-color: var(--text-dim);
}

.btn-style.active {
	background-color: rgba(2, 132, 199, 0.2);
	border-color: var(--primary);
	color: #38bdf8;
	font-weight: 500;
}

/* Collapsible Section */
.collapsible {
	overflow: hidden;
	transition: max-height 0.3s ease, opacity 0.3s ease;
	max-height: 0;
	opacity: 0.5;
}

.collapsible.open {
	max-height: 12rem;
	opacity: 1;
}

.file-list-card {
	flex: 1;
	display: flex;
	flex-direction: column;
	min-height: 300px;
}

.file-list-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 0.5rem;
}

.btn-text-danger {
	background: none;
	border: none;
	color: #f87171;
	font-size: 0.75rem;
	cursor: pointer;
	font-weight: 500;
	padding: 0.25rem 0.5rem;
	border-radius: 4px;
	border: 1px solid black;
}

.btn-text-danger:hover {
	background-color: var(--danger-bg);
	border: 1px solid var(--danger);
}

.file-list-container {
	flex: 1;
	overflow-y: auto;
	position: relative;
	display: flex;
	flex-direction: column;
	gap: 0.25rem;
	min-height: 100px;
}

/* Empty State */
.empty-state {
	height: 100%;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	border: 2px dashed var(--bg-input);
	border-radius: var(--radius-lg);
	background-color: rgba(30, 41, 59, 0.3);
	color: var(--text-muted);
	padding: 2rem;
	text-align: center;
}

/* File Item */
.file-item {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.5rem;
	background-color: var(--bg-card-solid);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-md);
	cursor: grab;
	transition: all 0.2s;
	user-select: none;
}

.file-item:active {
	cursor: grabbing;
}

.file-item:hover {
	border-color: rgba(56, 189, 248, 0.5);
	background-color: #263345;
}

.file-item.dragging {
	opacity: 0.4;
}

.file-index {
	width: 2rem;
	height: 2rem;
	background-color: var(--bg-input);
	border-radius: 4px;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 0.75rem;
	font-weight: 700;
	color: var(--text-main);
}

.file-info {
	flex: 1;
	min-width: 0;
}

.file-name {
	font-size: 0.875rem;
	font-weight: 600;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.file-meta {
	font-size: 0.75rem;
	color: var(--text-dim);
	font-family: monospace;
}

.btn-remove {
	background: none;
	border: none;
	color: var(--text-dim);
	padding: 0.5rem;
	border-radius: 4px;
	cursor: pointer;
	opacity: 0;
	transition: all 0.2s;
}

.file-item:hover .btn-remove {
	opacity: 1;
}

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

/* Action Buttons Area */
.actions-area {
	padding-top: 0.5rem;
	border-top: 1px solid rgba(51, 65, 85, 0.5);
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0.5rem;
}

.btn-primary,
.btn-secondary {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	padding: 0.625rem;
	border-radius: var(--radius-md);
	font-size: 0.875rem;
	font-weight: 500;
	cursor: pointer;
	transition: all 0.15s;
	border: 1px solid var(--border-color); /* Added border */
	width: 100%;
}

.btn-secondary {
	background-color: var(--bg-input);
	color: var(--text-main);
}

.btn-secondary:hover {
	background-color: #475569;
	border-color: var(--primary-hover); /* Added border hover */
}

.btn-secondary:active {
	transform: scale(0.98);
}

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

.btn-primary:hover {
	background-color: var(--primary-hover);
	border-color: var(--primary-hover); /* Added border hover */
}

.btn-primary:active {
	transform: scale(0.98);
}

.output-panel-container {
	flex: 1;
	background-color: var(--bg-output);
	border-radius: var(--radius-lg);
	border: 1px solid var(--border-color);
	display: flex;
	flex-direction: column;
	overflow: hidden;
	box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.3);
	height: 100%;
}

.output-toolbar {
	background-color: rgba(15, 23, 42, 0.5);
	padding: 0.75rem 1rem;
	border-bottom: 1px solid var(--border-color);
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-shrink: 0;
}

.window-controls {
	display: flex;
	gap: 0.375rem;
}

.dot {
	width: 0.75rem;
	height: 0.75rem;
	border-radius: 50%;
}

.dot-red {
	background-color: rgba(239, 68, 68, 0.2);
	border: 1px solid rgba(239, 68, 68, 0.5);
}

.dot-yellow {
	background-color: rgba(234, 179, 8, 0.2);
	border: 1px solid rgba(234, 179, 8, 0.5);
}

.dot-green {
	background-color: rgba(34, 197, 94, 0.2);
	border: 1px solid rgba(34, 197, 94, 0.5);
}

.line-counter {
	font-family: monospace;
	font-size: 0.75rem;
	color: var(--text-muted);
	margin-left: 1rem;
}

.btn-toolbar {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.375rem 0.75rem;
	border-radius: 0.375rem;
	font-size: 0.75rem;
	font-weight: 500;
	cursor: pointer;
	border: 1px solid transparent;
	background-color: var(--bg-card);
	color: var(--text-main);
	transition: all 0.2s;
}

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

.btn-toolbar.success {
	background-color: var(--success-bg);
	border-color: rgba(34, 197, 94, 0.3);
	color: #4ade80;
}

.btn-toolbar.primary {
	background-color: var(--primary);
	color: white;
}

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

.output-content {
	flex: 1;
	overflow: auto;
	font-family: monospace;
	font-size: 0.875rem;
	color: #e2e8f0;
	line-height: 1.6;
	white-space: pre-wrap;
	word-break: break-word;
}

/* Highlight flash animation */
@keyframes highlightFlash {
	0% {
		background-color: rgba(14, 165, 233, 0.2);
	}

	100% {
		background-color: transparent;
	}
}

.flash-highlight {
	animation: highlightFlash 1s ease-out;
}

.drag-overlay {
	position: fixed;
	inset: 0;
	z-index: 50;
	background-color: rgba(15, 23, 42, 0.9);
	backdrop-filter: blur(8px);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.3s ease;
}

.drag-overlay.active {
	opacity: 1;
	pointer-events: all;
}

.bounce-box {
	background-color: var(--bg-card-solid);
	padding: 1.5rem;
	border-radius: 50%;
	border: 1px solid var(--border-color);
	margin-bottom: 2rem;
	animation: bounce 1s infinite;
}

@keyframes bounce {

	0%,
	100% {
		transform: translateY(-10%);
	}

	50% {
		transform: translateY(10%);
	}
}

.drag-title {
	font-size: 2.25rem;
	font-weight: 700;
	color: white;
	margin-bottom: 1rem;
}

.drag-subtitle {
	font-size: 1.125rem;
	color: var(--text-muted);
}

.drag-placeholder-bar {
	height: 4px;
	background-color: var(--primary);
	border-radius: 99px;
	margin: 4px 0;
	pointer-events: none;
}

.output-content span {
	border-bottom: 1px solid var(--border-color);
	padding-right: 1em;
	padding-left: 1em;
}

.output-content span:nth-child(odd) {
	background-color: rgba(2, 132, 199, 0.02);
}

.output-content span:nth-child(even) {
	background-color: rgba(15, 23, 42, 0.1);
}

.output-content span:last-child {
	padding-bottom: 1em;
}

.output-content span:first-child {
	padding-top: 1em;
}