/* ============================================
   PNG to OTBM Converter - Styles
   ============================================ */

:root {
	--bg-primary: #111210;
	--bg-secondary: #171915;
	--bg-panel: #1c1f1a;
	--bg-elevated: #22261f;
	--bg-input: #151713;
	
	--border-color: #34382f;
	--border-strong: #464b40;
	--border-focus: #7a9b68;
	
	--text-primary: #f1f0ea;
	--text-secondary: #c3c0b5;
	--text-muted: #89877d;
	
	--accent: #8faa7b;
	--accent-hover: #a5bb94;
	--success: #8faa7b;
	--success-hover: #a5bb94;
	--warning: #c19a5b;
	--error: #d06d62;
	
	/* Typography */
	--font-display: 'Space Grotesk', system-ui, sans-serif;
	--font-mono: 'JetBrains Mono', 'Consolas', monospace;
	
	/* Spacing */
	--radius-sm: 4px;
	--radius-md: 8px;
	--radius-lg: 8px;
	
	/* Transitions */
	--transition-fast: 150ms ease;
	--transition-normal: 180ms ease;
}

/* Reset & Base */
*, *::before, *::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html, body {
	height: 100%;
}

body {
	font-family: var(--font-mono);
	font-size: 14px;
	line-height: 1.5;
	color: var(--text-primary);
	background: var(--bg-primary);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

/* App Layout */
.app {
	display: flex;
	flex-direction: column;
	height: 100vh;
	max-width: 1680px;
	margin: 0 auto;
	padding: 20px;
	overflow: hidden;
}

/* Header */
.header {
	margin-bottom: 16px;
}

.header-content {
	display: flex;
	align-items: baseline;
	gap: 20px;
}

.logo {
	font-family: var(--font-display);
	font-size: 22px;
	font-weight: 600;
	color: var(--text-primary);
	display: flex;
	align-items: center;
	gap: 12px;
}

.logo-icon {
	color: var(--accent);
	font-size: 24px;
}

.tagline {
	font-size: 14px;
	color: var(--text-muted);
}

/* Main Content */
.main {
	display: flex;
	gap: 16px;
	flex: 1;
	min-height: 0;
	overflow: hidden;
}

/* Panels */
.panel {
	background: var(--bg-panel);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-lg);
	display: flex;
	flex-direction: column;
	overflow: hidden;
}

.panel-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 12px 16px;
	border-bottom: 1px solid var(--border-color);
	background: var(--bg-panel);
	gap: 12px;
}

.panel-header h2 {
	font-family: var(--font-display);
	font-size: 14px;
	font-weight: 600;
	letter-spacing: 0;
	color: var(--text-primary);
	flex: 1;
	min-width: 0;
}

.image-info,
.color-count {
	font-size: 12px;
	color: var(--text-secondary);
}

/* Preview Panel */
.preview-panel {
	flex: 1;
	min-width: 0;
}

/* Preview Controls */
.preview-controls {
	padding: 10px 16px;
	border-bottom: 1px solid var(--border-color);
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 12px;
}

.zoom-controls {
	display: flex;
	align-items: center;
	gap: 8px;
}

.map-scale-control {
	display: flex;
	align-items: center;
	gap: 4px;
}

.map-scale-unit {
	font-size: 12px;
	color: var(--text-muted);
}

.map-scale-hint {
	font-size: 12px;
	line-height: 1.45;
	color: var(--text-muted);
	font-family: var(--font-mono);
	margin: -2px 0 2px;
}

.btn-zoom {
	padding: 6px 10px;
	font-size: 14px;
	font-weight: 600;
	min-width: 36px;
	height: 32px;
	display: flex;
	align-items: center;
	justify-content: center;
}

.zoom-level {
	font-size: 12px;
	color: var(--text-secondary);
	min-width: 50px;
	text-align: center;
	font-family: var(--font-mono);
}

.preview-container {
	flex: 1;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--bg-secondary);
	margin: 12px;
	border-radius: var(--radius-md);
	border: 1px dashed var(--border-color);
	position: relative;
	overflow: auto;
	min-height: 0;
}

.preview-container::-webkit-scrollbar {
	width: 8px;
	height: 8px;
}

.preview-container::-webkit-scrollbar-track {
	background: var(--bg-secondary);
}

.preview-container::-webkit-scrollbar-thumb {
	background: var(--border-color);
	border-radius: 4px;
}

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

.preview-placeholder {
	text-align: center;
	color: var(--text-muted);
}

.placeholder-icon {
	width: 48px;
	height: 38px;
	margin: 0 auto 14px;
	border: 1px solid var(--border-strong);
	border-radius: var(--radius-sm);
	position: relative;
	opacity: 0.8;
}

.placeholder-icon::before {
	content: "";
	position: absolute;
	left: 9px;
	right: 9px;
	bottom: 9px;
	height: 10px;
	border-left: 1px solid var(--border-strong);
	border-bottom: 1px solid var(--border-strong);
	transform: skewX(-24deg);
}

.placeholder-icon::after {
	content: "";
	position: absolute;
	top: 8px;
	right: 9px;
	width: 6px;
	height: 6px;
	border-radius: 50%;
	background: var(--border-strong);
}

.placeholder-sub {
	font-size: 12px;
	margin-top: 8px;
	color: var(--text-muted);
}

#previewCanvas {
	display: none;
	image-rendering: pixelated;
	image-rendering: crisp-edges;
}

#previewCanvas.visible {
	display: block;
	cursor: crosshair;
}

/* Pixel Info Tooltip */
.pixel-info {
	position: absolute;
	background: var(--bg-primary);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-sm);
	padding: 8px 12px;
	font-size: 11px;
	font-family: var(--font-mono);
	color: var(--text-primary);
	pointer-events: none;
	z-index: 1000;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.24);
	display: none;
	white-space: nowrap;
	line-height: 1.6;
	min-width: 120px;
}

.import-section {
	padding: 12px 16px;
	border-top: 1px solid var(--border-color);
	display: flex;
	justify-content: center;
	gap: 12px;
}

/* Left Panels Container */
.left-panels {
	display: flex;
	gap: 16px;
	flex-shrink: 0;
	min-width: 0;
}

/* Color Mappings Panel */
.mappings-panel {
	width: 340px;
	flex-shrink: 0;
	display: flex;
	flex-direction: column;
	max-height: 100%;
	overflow: hidden;
}

/* Settings Panel (right) */
.settings-panel {
	width: 300px;
	flex-shrink: 0;
	display: flex;
	flex-direction: column;
	max-height: 100%;
	overflow: hidden;
}

.settings-body {
	flex: 1;
	min-height: 0;
	display: flex;
	flex-direction: column;
}

.settings-panel-footer {
	flex-shrink: 0;
	border-top: 1px solid var(--border-color);
	background: var(--bg-panel);
}

/* Favorites Panel */
.favorites-panel {
	width: 220px;
	flex-shrink: 0;
	display: flex;
	flex-direction: column;
	max-height: 100%;
	overflow: hidden;
}

/* Color Toolbar */
.color-toolbar {
	padding: 12px 16px;
	border-bottom: 1px solid var(--border-color);
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.color-search {
	width: 100%;
	padding: 8px 12px;
	font-family: var(--font-mono);
	font-size: 13px;
	background: var(--bg-input);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-sm);
	color: var(--text-primary);
	outline: none;
	transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.color-search:focus {
	border-color: var(--accent);
}

.toolbar-buttons {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
}

.btn-small {
	padding: 8px 12px;
	font-size: 12px;
	flex: 1;
	min-width: 0;
}

.color-list-container {
	flex: 1;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	min-height: 0;
}

.color-list {
	flex: 1;
	overflow-y: auto;
	overflow-x: hidden;
	padding: 10px;
	min-height: 0;
	max-height: 100%;
}

.color-list::-webkit-scrollbar {
	width: 8px;
}

.color-list::-webkit-scrollbar-track {
	background: var(--bg-secondary);
}

.color-list::-webkit-scrollbar-thumb {
	background: var(--border-color);
	border-radius: 4px;
}

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

/* Simplify colors (bottom of color mappings) */
.simplify-footer {
	flex-shrink: 0;
	border-top: 1px solid var(--border-color);
	padding: 12px 16px;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.simplify-hint {
	font-size: 12px;
	line-height: 1.45;
	color: var(--text-secondary);
}

.simplify-row {
	display: flex;
	align-items: center;
	gap: 10px;
}

.simplify-row label {
	font-size: 13px;
	color: var(--text-secondary);
	white-space: nowrap;
}

.simplify-row .input-small {
	width: 64px;
}

.simplify-row .btn {
	margin-left: auto;
}

.empty-state {
	display: flex;
	align-items: center;
	justify-content: center;
	height: 200px;
	color: var(--text-muted);
	text-align: center;
	font-size: 13px;
}

.empty-state.hidden {
	display: none;
}

/* Color Row */
.color-row {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 9px 10px;
	background: var(--bg-secondary);
	border-radius: var(--radius-sm);
	margin-bottom: 6px;
	border: 1px solid var(--border-color);
	transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.color-row:hover {
	border-color: var(--border-strong);
}

.color-row.highlighted {
	border-color: var(--accent);
	background: #22291f;
}

.color-swatch {
	width: 34px;
	height: 34px;
	border-radius: var(--radius-sm);
	border: 1px solid var(--border-color);
	flex-shrink: 0;
}

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

.color-rgb {
	font-size: 12px;
	color: var(--text-primary);
	font-weight: 500;
}

.color-pixels {
	font-size: 11px;
	color: var(--text-muted);
}

input[type="number"].color-id-input {
	width: 92px;
	flex-shrink: 0;
	padding-right: 10px;
	text-align: left;
}

.color-row.drag-over {
	border-color: var(--accent);
	background: #22291f;
}

.favorites-toolbar {
	padding: 0 16px 5px;
	margin-top: 5px;
	display: flex;
	gap: 8px;
	border-bottom: 1px solid var(--border-color);
}

.favorites-toolbar .btn-small {
	flex: 1;
	min-width: 0;
}

/* Favorites Panel - Header button alignment */
.favorites-panel .panel-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 8px;
}

.favorites-panel .panel-header h2 {
	flex: 1;
	min-width: 0;
}

.favorites-panel .panel-header .btn-icon-only {
	padding: 0;
	min-width: 24px;
	width: 24px;
	height: 24px;
	font-size: 12px;
	line-height: 1;
	background: var(--bg-input);
	border: 1px solid var(--border-color);
	color: var(--text-primary);
	flex-shrink: 0;
}

.favorites-panel .panel-header .btn-icon-only:hover {
	background: var(--bg-secondary);
	border-color: var(--border-strong);
}

.btn-icon-only {
	padding: 4px 8px;
	min-width: 24px;
	height: 24px;
	font-size: 18px;
	line-height: 1;
	background: var(--bg-input);
	border: 1px solid var(--border-color);
	color: var(--text-primary);
}

.btn-icon-only:hover {
	background: var(--bg-secondary);
	border-color: var(--border-strong);
}

.favorites-list {
	flex: 1;
	overflow-y: auto;
	overflow-x: hidden;
	padding: 10px;
	min-height: 0;
}

.favorites-list::-webkit-scrollbar {
	width: 6px;
}

.favorites-list::-webkit-scrollbar-track {
	background: var(--bg-secondary);
}

.favorites-list::-webkit-scrollbar-thumb {
	background: var(--border-color);
	border-radius: 3px;
}

.favorite-item {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 8px;
	background: var(--bg-secondary);
	border-radius: var(--radius-sm);
	margin-bottom: 6px;
	border: 1px solid var(--border-color);
	cursor: grab;
	transition: border-color var(--transition-fast), background-color var(--transition-fast), opacity var(--transition-fast);
	position: relative;
}

.favorite-item:hover {
	border-color: var(--border-strong);
	background: var(--bg-panel);
}

.favorite-item.dragging {
	opacity: 0.5;
	cursor: grabbing;
}

.favorite-name {
	flex: 1;
	font-size: 12px;
	color: var(--text-primary);
	font-weight: 500;
	min-width: 0;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.favorite-id {
	font-size: 11px;
	color: var(--text-muted);
	font-family: var(--font-mono);
}

.favorite-actions {
	display: flex;
	gap: 4px;
	flex-shrink: 0;
}

.favorite-edit,
.favorite-delete {
	padding: 2px 6px;
	min-width: 20px;
	height: 20px;
	font-size: 16px;
	line-height: 1;
	opacity: 0.6;
	flex-shrink: 0;
}

.favorite-edit {
	display: inline-flex;
	align-items: center;
	justify-content: center;
}

.favorite-edit-icon {
	display: block;
	transform: translateY(-2px);
}

.favorite-edit:hover {
	opacity: 1;
	color: var(--accent);
}

.favorite-delete:hover {
	opacity: 1;
	color: var(--error);
}

#favoritesEmptyState {
	height: 200px;
	font-size: 11px;
}

/* Image tools (tabbed: cleanup / refine / simplify) */
.tools-section {
	border-bottom: 1px solid var(--border-color);
}

.tools-tabs {
	display: flex;
	gap: 4px;
	padding: 8px 16px 0;
	border-bottom: 1px solid var(--border-color);
}

.tools-tab {
	appearance: none;
	background: none;
	border: none;
	border-bottom: 2px solid transparent;
	padding: 6px 4px;
	margin-bottom: -1px;
	font-family: var(--font-mono);
	font-size: 12px;
	font-weight: 500;
	color: var(--text-muted);
	cursor: pointer;
	transition: color var(--transition-fast), border-color var(--transition-fast);
}

.tools-tab:hover {
	color: var(--text-secondary);
}

.tools-tab.is-active {
	color: var(--text-primary);
	border-bottom-color: var(--accent);
}

.tool-panel {
	padding: 10px 16px;
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.tool-panel .setting-row {
	margin-top: 2px;
}

.tool-panel[hidden] {
	display: none;
}

.tool-hint {
	font-size: 12px;
	line-height: 1.45;
	color: var(--text-secondary);
}

.tool-value {
	font-size: 12px;
	font-weight: 600;
	color: var(--accent);
}

.tool-slider {
	width: 100%;
	margin: 0;
	accent-color: var(--accent);
	cursor: pointer;
}

.tool-btn {
	width: 100%;
	margin-top: 2px;
}

/* Settings Section */
.settings-section {
	padding: 10px 16px;
	border-bottom: 1px solid var(--border-color);
	display: flex;
	flex-direction: column;
	gap: 6px;
}

.settings-grid--pairs {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 8px 12px;
}

.settings-grid--pairs .setting-row {
	flex-direction: column;
	align-items: stretch;
	gap: 4px;
}

.settings-grid--pairs .setting-row label {
	padding-right: 0;
	font-size: 11px;
}

.settings-grid--pairs .input-small {
	width: 100%;
}

.setting-row {
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.setting-row label {
	font-size: 13px;
	color: var(--text-secondary);
	padding-right: 12px;
}

/* Buttons */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	padding: 10px 16px;
	font-family: var(--font-mono);
	font-size: 13px;
	font-weight: 600;
	letter-spacing: 0;
	border: none;
	border-radius: var(--radius-md);
	cursor: pointer;
	transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), opacity var(--transition-fast);
}

.btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

.btn-icon {
	font-size: 16px;
}

.btn-primary {
	background: var(--accent);
	color: #10120f;
}

.btn-primary:hover:not(:disabled) {
	background: var(--accent-hover);
}

.generate-actions {
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 0 16px 12px;
}

.generate-actions .btn-success {
	width: 100%;
}

.ignore-limits-label {
	display: flex;
	align-items: center;
	gap: 6px;
	font-size: 12px;
	color: var(--text-secondary);
	cursor: pointer;
	user-select: none;
}

.ignore-limits-label input {
	cursor: pointer;
}

.generate-options {
	display: flex;
	flex-direction: column;
	gap: 8px;
	padding: 10px 16px 8px;
}

.generate-options-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 8px 12px;
}

.generate-option-label {
	display: flex;
	align-items: center;
	gap: 6px;
	font-size: 12px;
	color: var(--text-secondary);
	cursor: pointer;
	user-select: none;
}

.generate-option-label input {
	cursor: pointer;
}

.generate-option-label select {
	font-family: var(--font-mono);
	font-size: 12px;
	padding: 2px 4px;
	background: var(--bg-input);
	border: 1px solid var(--border-color);
	border-radius: 4px;
	color: var(--text-primary);
	cursor: pointer;
}

.btn-success {
	background: var(--success);
	color: #10120f;
}

.btn-success:hover:not(:disabled) {
	background: var(--success-hover);
}

.btn-small {
	background: var(--bg-input);
	border: 1px solid var(--border-color);
	color: var(--text-primary);
}

.btn-small:hover:not(:disabled) {
	background: var(--bg-secondary);
	border-color: var(--border-strong);
}

/* Inputs */
input[type="number"],
input[type="text"],
select {
	font-family: var(--font-mono);
	font-size: 13px;
	padding: 8px 12px;
	background: var(--bg-input);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-sm);
	color: var(--text-primary);
	outline: none;
	transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
	border-color: var(--accent);
	background: var(--bg-secondary);
}

.input-small {
	width: 80px;
	text-align: center;
}

.input-select {
	width: 180px;
	cursor: pointer;
}

.input-select option {
	background: var(--bg-input);
	color: var(--text-primary);
}

.settings-panel .setting-row {
	flex-wrap: wrap;
	gap: 6px;
}

.settings-panel .input-select {
	width: 100%;
	max-width: 140px;
}

/* Progress Indicator */
.progress-container {
	padding: 0 16px 8px;
	display: flex;
	align-items: center;
	gap: 12px;
}

.progress-bar {
	flex: 1;
	height: 6px;
	background: var(--bg-input);
	border-radius: 3px;
	overflow: hidden;
}

.progress-fill {
	height: 100%;
	background: var(--accent);
	transition: width 0.1s ease;
	width: 0%;
}

.progress-text {
	font-size: 11px;
	color: var(--text-muted);
	min-width: 40px;
	text-align: right;
}

/* Status */
.status {
	padding: 0 16px 12px;
	font-size: 12px;
	min-height: 20px;
}

.status.success {
	color: var(--success);
}

.status.error {
	color: var(--error);
}

.status.warning {
	color: var(--warning);
}

/* Footer */
.footer {
	margin-top: 24px;
	text-align: center;
	font-size: 12px;
	color: var(--text-muted);
}

/* Drag & Drop States */
.preview-container.drag-over {
	border-color: var(--accent);
	background: #20261d;
}

/* Responsive */
@media (max-width: 1400px) {
	.left-panels {
		flex-direction: column;
		width: 280px;
	}

	.mappings-panel,
	.favorites-panel {
		width: 100%;
		flex: 1;
		min-height: 0;
	}
}

@media (max-width: 1100px) {
	.main {
		flex-wrap: wrap;
		overflow-y: auto;
	}

	.left-panels {
		flex-direction: row;
		width: 100%;
		order: 2;
	}

	.mappings-panel {
		flex: 1;
		min-height: 280px;
	}

	.favorites-panel {
		width: 220px;
		min-height: 280px;
	}

	.preview-panel {
		width: 100%;
		order: 1;
		min-height: 360px;
	}

	.settings-panel {
		width: 100%;
		order: 3;
		max-height: none;
	}

	.settings-panel-footer {
		border-top: none;
	}
}

@media (max-width: 700px) {
	.left-panels {
		flex-direction: column;
	}

	.favorites-panel {
		width: 100%;
	}
}