:root {
	/* Light Theme */
	--bg-primary: #ffffff;
	--bg-secondary: #f9fafb;
	--bg-tertiary: #f3f4f6;
	--text-primary: #111827;
	--text-secondary: #4b5563;
	--text-muted: #9ca3af;
	--border-color: #e5e7eb;
	--accent-color: #3b82f6;
	--accent-hover: #2563eb;
	--selection: #dbeafe;
	--sidebar-width: 280px;
	--header-height: 56px;
	--footer-height: 28px;
	--transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
	--bg-primary: #111827;
	--bg-secondary: #1f2937;
	--bg-tertiary: #374151;
	--text-primary: #f9fafb;
	--text-secondary: #d1d5db;
	--text-muted: #6b7280;
	--border-color: #374151;
	--accent-color: #60a5fa;
	--accent-hover: #93c5fd;
	--selection: #1e3a8a;
}

* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	font-family:
		"Inter",
		-apple-system,
		BlinkMacSystemFont,
		"Segoe UI",
		Roboto,
		sans-serif;
}

body {
	height: 100vh;
	background: var(--bg-primary);
	color: var(--text-primary);
	overflow: hidden;
	transition:
		background var(--transition),
		color var(--transition);
}

/* Layout */
.app {
	display: flex;
	height: 100vh;
	width: 100vw;
}

/* Sidebar */
.sidebar {
	width: var(--sidebar-width);
	background: var(--bg-secondary);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	border-right: 1px solid var(--border-color);
	display: flex;
	flex-direction: column;
	flex-shrink: 0;
	transition: var(--transition);
	z-index: 10;
	min-width: 300px;
}

.sidebar.resizing {
	transition: none;
}

.sidebar-resize-handle {
	width: 4px;
	height: 100vh;
	background: var(--border-color);
	cursor: col-resize;
	user-select: none;
	transition: background var(--transition);
	flex-shrink: 0;
}

.sidebar-resize-handle:hover {
	background: var(--accent-color);
}

.sidebar-resize-handle.active {
	background: var(--accent-color);
}

.toolbar {
	padding: 20px 16px;
	display: flex;
	gap: 12px;
}

.btn {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	padding: 10px 14px;
	font-size: 14px;
	font-weight: 600;
	border-radius: 10px;
	border: 1px solid var(--border-color);
	background: var(--bg-primary);
	color: var(--text-primary);
	cursor: pointer;
	transition: all var(--transition);
	flex: 1;
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn:hover {
	background: var(--bg-tertiary);
	transform: translateY(-2px);
	box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

.btn.primary {
	background: linear-gradient(135deg, var(--accent-color), #2563eb);
	color: white;
	border: none;
}

.btn.primary:hover {
	background: linear-gradient(135deg, var(--accent-hover), #1d4ed8);
}

/* Search */
.search {
	padding: 0 16px 16px 16px;
}

.search-container {
	position: relative;
	display: flex;
	align-items: center;
}

.search input {
	width: 100%;
	padding: 10px 12px;
	font-size: 14px;
	border-radius: 10px;
	border: 1px solid var(--border-color);
	background: var(--bg-primary);
	color: var(--text-primary);
	outline: none;
	transition: all var(--transition);
}

.search input:focus {
	border-color: var(--accent-color);
	box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
	background: var(--bg-primary);
}

/* File tree */
.file-tree {
	flex: 1;
	overflow-y: auto;
	padding: 8px 0;
}

.file-item {
	display: flex;
	align-items: center;
	padding: 10px 16px;
	cursor: pointer;
	font-size: 14px;
	color: var(--text-secondary);
	transition: all var(--transition);
	border-radius: 8px;
	margin: 2px 12px;
	position: relative;
	user-select: none;
}

.file-item:hover {
	background: var(--bg-tertiary);
	color: var(--text-primary);
}

.file-item.active {
	background: var(--selection);
	color: var(--accent-color);
	font-weight: 600;
}

.file-item .icon {
	margin-right: 10px;
	width: 18px;
	text-align: center;
	flex-shrink: 0;
}

.file-item > span:not(.icon):not(.actions) {
	flex: 1;
	min-width: 0;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

.file-item .actions {
	margin-left: auto;
	display: flex;
	gap: 4px;
	opacity: 0;
	pointer-events: none;
	transition: opacity var(--transition);
}

.file-item:hover .actions {
	opacity: 1;
	pointer-events: auto;
}

.action-btn {
	padding: 2px;
	border-radius: 4px;
	cursor: pointer;
	opacity: 0.6;
	transition: var(--transition);
}

.action-btn:hover {
	opacity: 1;
	background: rgba(0, 0, 0, 0.1);
}

/* Main Content */
.main {
	flex: 1;
	display: flex;
	flex-direction: column;
	background: var(--bg-primary);
	min-width: 0;
	transition: background var(--transition);
}

/* Top bar */
.topbar {
	height: var(--header-height);
	border-bottom: 1px solid var(--border-color);
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0 20px;
	background: var(--bg-primary);
	transition:
		background var(--transition),
		border var(--transition);
}

#breadcrumb {
	flex: 1;
	min-width: 0;
	font-size: 14px;
	color: var(--text-secondary);
	display: flex;
	align-items: center;
	flex-wrap: nowrap;
	gap: 8px;
	overflow-x: auto;
	overflow-y: hidden;
	white-space: nowrap;
	scrollbar-width: none;
	-ms-overflow-style: none;
}

#breadcrumb::-webkit-scrollbar {
	display: none;
}

.breadcrumb-item:hover {
	color: var(--text-primary);
	cursor: pointer;
}

.breadcrumb-item {
	flex: 0 0 auto;
}

.breadcrumb-item:not(:last-child)::after {
	content: "/";
	margin-left: 8px;
	color: var(--text-muted);
}

.controls {
	display: flex;
	flex-shrink: 0;
	gap: 8px;
}

.control-btn {
	width: 32px;
	height: 32px;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 6px;
	border: 1px solid var(--border-color);
	background: var(--bg-primary);
	color: var(--text-primary);
	cursor: pointer;
	font-size: 14px;
	transition: var(--transition);
}

.control-btn:hover {
	background: var(--bg-tertiary);
}

/* Editor */
.editor-container {
	flex: 1;
	display: flex;
	overflow: hidden;
	position: relative;
}

.line-numbers {
	width: 50px;
	background: var(--bg-secondary);
	border-right: 1px solid var(--border-color);
	font-size: 13px;
	color: var(--text-muted);
	text-align: right;
	padding: 16px 12px 0 0;
	font-family: "JetBrains Mono", "Fira Code", monospace;
	user-select: none;
	transition:
		background var(--transition),
		border var(--transition);
}

.line-numbers div {
	height: 24px;
}

textarea {
	flex: 1;
	border: none;
	outline: none;
	padding: 16px 20px;
	font-family: "JetBrains Mono", "Fira Code", monospace;
	font-size: 15px;
	line-height: 24px;
	color: var(--text-primary);
	background: transparent;
	resize: none;
	white-space: pre;
	tab-size: 4;
}

/* Status Bar */
.statusbar {
	height: var(--footer-height);
	border-top: 1px solid var(--border-color);
	font-size: 12px;
	display: flex;
	align-items: center;
	justify-content: flex-end;
	padding: 0 16px;
	background: var(--bg-secondary);
	color: var(--text-muted);
	transition:
		background var(--transition),
		border var(--transition);
}

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

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

::-webkit-scrollbar-thumb {
	background: var(--border-color);
	border-radius: 10px;
}

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

/* Modal */
.modal-overlay {
	position: fixed;
	top: 0;
	left: 0;
	width: 100vw;
	height: 100vh;
	background: rgba(0, 0, 0, 0.4);
	display: none;
	align-items: flex-start;
	justify-content: center;
	z-index: 1000;
	backdrop-filter: blur(4px);
	transition: var(--transition);
}

.modal-overlay.active {
	display: flex;
}

.modal-container {
	width: 500px;
	background: var(--bg-primary);
	margin-top: 60px;
	border-radius: 12px;
	box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
	border: 1px solid var(--border-color);
	padding: 20px;
	animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDown {
	from {
		transform: translateY(-20px);
		opacity: 0;
	}

	to {
		transform: translateY(0);
		opacity: 1;
	}
}

.modal-title {
	font-size: 14px;
	font-weight: 600;
	margin-bottom: 12px;
	color: var(--text-secondary);
}

.modal-input {
	width: 100%;
	padding: 12px 16px;
	font-size: 15px;
	border-radius: 8px;
	border: 1px solid var(--accent-color);
	background: var(--bg-primary);
	color: var(--text-primary);
	outline: none;
	font-family: inherit;
}

.modal-actions {
	margin-top: 12px;
	display: flex;
	justify-content: flex-end;
}

.secondary-toolbar {
	padding: 0 16px 12px;
	gap: 8px;
	justify-content: flex-start;
}

.btn-small {
	display: flex;
	align-items: center;
	gap: 4px;
	padding: 4px 10px;
	font-size: 11px;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.5px;
	border-radius: 6px;
	border: 1px solid var(--border-color);
	background: var(--bg-primary);
	color: var(--text-secondary);
	cursor: pointer;
	transition: var(--transition);
}

.btn-small:hover {
	background: var(--bg-tertiary);
	color: var(--text-primary);
	border-color: var(--text-muted);
}

/* Modals */
.modal-message {
	font-size: 14px;
	color: var(--text-secondary);
	margin-bottom: 20px;
	line-height: 1.5;
}

.modal-buttons {
	display: flex;
	gap: 10px;
	width: 100%;
}

.modal-btn {
	flex: 1;
	padding: 10px;
	border-radius: 8px;
	border: 1px solid var(--border-color);
	cursor: pointer;
	font-weight: 600;
	font-size: 14px;
	transition: var(--transition);
}

.modal-btn.primary {
	background: #ef4444;
	color: white;
	border: none;
}

.modal-btn.primary:hover {
	background: #dc2626;
}

.modal-btn.secondary {
	background: var(--bg-tertiary);
	color: var(--text-primary);
}

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

.file-item.dragging {
	opacity: 0.5;
	background: var(--bg-tertiary);
}

.file-item.drag-over {
	background: var(--selection);
	outline: 2px dashed var(--accent-color);
	outline-offset: -2px;
}

/* Context Menu */

.context-menu {
	position: fixed;
	min-width: 160px;
	background: var(--bg-primary);
	border: 1px solid var(--border-color);
	border-radius: 8px;
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
	padding: 6px 0;
	z-index: 2000;
}

.context-menu-item {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 8px 12px;
	font-size: 13px;
	color: var(--text-primary);
	cursor: pointer;
	transition: background 0.1s;
}

.context-menu-item:hover {
	background: var(--selection);
	color: var(--accent-color);
}

.context-menu-item i {
	opacity: 0.7;
}

.hidden {
	display: none !important;
}

/* Animations */
@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(5px);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.file-item {
	animation: fadeIn 0.3s ease forwards;
}