:root {
	--bg: #111111;
	--bg-card: #1a1a1a;
	--bg-hover: #222222;
	--border: #2e2e2e;
	--border-hover: #4d4d30;
	--text: #F5F5F5;
	--text-muted: #8a8a8a;
	--text-dim: #4a4a4a;
	--accent: #F7DF1E;
	--accent-dim: rgba(247, 223, 30, 0.12);
	--brand: #F7DF1E;
	--green: #56C870;
	--green-dim: rgba(86, 200, 112, 0.12);
	--amber: #FF9800;
	--amber-dim: rgba(255, 152, 0, 0.15);
	--blush: #FFE566;
	--blush-dim: rgba(255, 229, 102, 0.15);
	--teal: #61DAFB;
	--teal-dim: rgba(97, 218, 251, 0.12);
	--red: #FF5C5C;
	--red-dim: rgba(255, 92, 92, 0.12);
	--sans: 'Inter', 'DM Sans', -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }

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

.icon { display: inline-block; vertical-align: middle; flex-shrink: 0; }

body {
	font-family: var(--sans);
	background: var(--bg);
	color: var(--text);
	line-height: 1.5;
	min-height: 100vh;
}

.app {
	max-width: 1140px;
	margin: 0 auto;
	padding: 40px 24px 60px;
	display: grid;
	grid-template-columns: 1fr 300px;
	gap: 32px;
	align-items: start;
}

.sidebar-col {
	position: sticky;
	top: 24px;
}

header {
	margin-bottom: 48px;
}

header h1 {
	font-family: var(--sans);
	font-size: 28px;
	font-weight: 600;
	letter-spacing: -0.5px;
	margin-bottom: 8px;
}

header h1 span { color: var(--brand); }

header p {
	color: var(--text-muted);
	font-size: 15px;
	max-width: 600px;
}

.category {
	margin-bottom: 8px;
	border: 2px solid var(--border);
	border-radius: 10px;
	transition: border-color 0.2s, box-shadow 0.2s;
}

.category.has-selection { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-dim); }

.cat-header {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 14px 16px;
	cursor: pointer;
	user-select: none;
	border-radius: 10px;
	transition: background 0.15s;
}

.category.open .cat-header { border-radius: 10px 10px 0 0; }

@media (hover: hover) {
	.cat-header:hover { background: var(--bg-hover); }
}

.cat-header:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.cat-arrow {
	color: var(--text-dim);
	transition: transform 0.2s;
	width: 16px;
	flex-shrink: 0;
	display: flex;
	align-items: center;
	justify-content: center;
}

.category.open .cat-arrow { transform: rotate(90deg); }

.cat-name {
	font-family: var(--sans);
	font-size: 14px;
	font-weight: 500;
	letter-spacing: 0.3px;
}

.cat-desc {
	font-size: 12px;
	color: var(--text-dim);
	margin-left: auto;
	white-space: nowrap;
}


.cat-body {
	display: none;
	padding: 4px 14px 14px 40px;
}

.category.open .cat-body { display: block; }

.category.open .cat-body.opening {
	animation: catBodyOpen 0.18s ease;
}

@keyframes catBodyOpen {
	from { opacity: 0; }
	to { opacity: 1; }
}

.cat-items {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	margin-bottom: 2px;
}

.pill {
	font-family: var(--sans);
	font-size: 13px;
	padding: 7px 11px;
	border-radius: 6px;
	cursor: pointer;
	border: 2px solid var(--border);
	background: var(--bg-card);
	color: var(--text-muted);
	transition: all 0.15s;
	position: relative;
	white-space: nowrap;
	display: inline-flex;
	align-items: center;
	user-select: none;
}

@media (hover: hover) {
	.pill:hover {
		border-color: var(--border-hover);
		color: var(--text);
		background: var(--bg-hover);
	}
}

.pill.selected {
	border-color: var(--accent);
	background: var(--accent-dim);
	color: var(--accent);
}

.pill.selected.multi-layer {
	border-color: var(--amber);
	background: var(--amber-dim);
	color: var(--amber);
}

.pill:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 2px;
}

.pill.cross-highlight {
	border-color: var(--teal);
	background: var(--teal-dim);
	color: var(--teal);
}


.pill-info {
	background: none;
	border: none;
	padding: 0 0 0 7px;
	color: var(--text-muted);
	cursor: pointer;
	line-height: 1;
	opacity: 0.65;
	transition: opacity 0.15s;
	display: inline-flex;
	align-items: center;
	flex-shrink: 0;
}

@media (hover: hover) {
	.pill-info:hover { opacity: 1; }
}

/* Detail bottom sheet */
.detail-overlay {
	position: fixed;
	inset: 0;
	z-index: 200;
	background: rgba(0, 0, 0, 0.5);
	display: none;
}

.detail-overlay.open {
	display: block;
	animation: fadeIn 0.15s ease;
}

.detail-sheet {
	position: fixed;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	background: var(--bg-card);
	border: 2px solid var(--border);
	border-radius: 12px;
	padding: 23px;
	max-height: 80vh;
	max-width: 480px;
	width: calc(100% - 32px);
	overflow-y: auto;
	animation: scaleIn 0.15s ease;
}

@keyframes scaleIn {
	from { opacity: 0; transform: translate(-50%, -50%) scale(0.96); }
	to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

@keyframes scaleOut {
	from { opacity: 1; transform: translate(-50%, -50%) scale(1); }
	to { opacity: 0; transform: translate(-50%, -50%) scale(0.96); }
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }

.detail-overlay.closing {
	display: block;
	animation: fadeOut 0.15s ease forwards;
}

.detail-overlay.closing .detail-sheet {
	animation: scaleOut 0.15s ease forwards;
}

@keyframes particleBurst {
	0%   { opacity: 1; transform: translate(0, 0) scale(1); }
	100% { opacity: 0; transform: translate(var(--dx), var(--dy)) scale(0); }
}

.burst-particle {
	position: fixed;
	pointer-events: none;
	z-index: 9999;
	border-radius: 50%;
	box-shadow: 0 0 2px 1px var(--glow);
	animation: particleBurst var(--dur, 0.9s) var(--ease, cubic-bezier(0.22, 0.61, 0.36, 1)) forwards;
}

@keyframes copyPop {
	0%   { transform: scale(1); }
	25%  { transform: scale(0.92); }
	65%  { transform: scale(1.05); }
	100% { transform: scale(1); }
}

@keyframes chipIn {
	from { opacity: 0.7; transform: translateY(3px) scale(0.97); }
	to   { opacity: 1;   transform: translateY(0)   scale(1); }
}

@keyframes scrollFlash {
	0%   { box-shadow: 0 0 0 3px var(--teal), 0 0 0 2px var(--teal-dim); border-color: var(--teal); }
	55%  { box-shadow: 0 0 0 3px var(--teal), 0 0 0 2px var(--teal-dim); border-color: var(--teal); }
	100% { box-shadow: none; border-color: var(--border); }
}

@keyframes chipFlash {
	0%   { box-shadow: inset 0 0 0 2px var(--teal); }
	55%  { box-shadow: inset 0 0 0 2px var(--teal); }
	100% { box-shadow: none; }
}

.category.scroll-flash { animation: scrollFlash 0.85s ease forwards; }

.stack-chip.chip-flash { animation: chipFlash 0.85s ease forwards; }

.detail-sheet .d-header,
#shortcuts-sheet .d-header {
	display: flex;
	justify-content: space-between;
	align-items: flex-start;
	margin-bottom: 4px;
}

.detail-sheet .d-name,
#shortcuts-sheet .d-name {
	font-family: var(--sans);
	font-weight: 600;
	font-size: 15px;
	color: var(--text);
	margin-bottom: 0;
}

.detail-sheet .d-close,
#shortcuts-sheet .d-close {
	background: none;
	border: none;
	cursor: pointer;
	color: var(--text-dim);
	padding: 2px;
	display: flex;
	align-items: center;
	flex-shrink: 0;
	transition: color 0.15s;
	margin: -8px -8px 0 0;
}

@media (hover: hover) {
	.detail-sheet .d-close:hover,
	#shortcuts-sheet .d-close:hover { color: var(--text); }
}

.detail-sheet .d-desc { color: var(--text-muted); font-size: 13px; margin-bottom: 12px; }

.detail-sheet .d-row { display: flex; gap: 8px; margin-bottom: 4px; align-items: baseline; flex-wrap: wrap; }

.d-label {
	font-family: var(--sans);
	font-size: 11px;
	font-weight: 500;
	color: var(--text-dim);
	text-transform: uppercase;
	letter-spacing: 0.8px;
	min-width: 70px;
	flex-shrink: 0;
}

.d-chips { display: flex; flex-wrap: wrap; gap: 4px; }

.d-chip {
	font-family: var(--sans);
	font-size: 11px;
	padding: 2px 8px;
	border-radius: 4px;
	background: var(--bg-hover);
	border: 2px solid var(--border);
	color: var(--text-muted);
}

.d-alts { color: var(--text-dim); font-size: 13px; }

.d-link {
	font-family: var(--sans);
	font-size: 12px;
	color: var(--green);
	text-decoration: none;
	transition: opacity 0.15s;
	display: inline-flex;
	align-items: center;
	gap: 4px;
}

@media (hover: hover) {
	.d-link:hover { opacity: 0.7; }
}

.stack-warnings {
	margin-top: 9px;
	padding-top: 9px;
	border-top: 2px solid var(--border);
	display: flex;
	flex-direction: column;
	gap: 4px;
	max-height: 100px;
	overflow-y: auto;
}

.stack-warning {
	font-family: var(--sans);
	font-size: 12px;
	color: var(--amber);
	padding: 4px 10px;
	background: var(--amber-dim);
	border-radius: 6px;
	line-height: 1.5;
	animation: chipIn 0.12s ease-out both;
	user-select: none;
}

.stack-warning .sw-icon { margin-right: 4px; }

.cat-note {
	font-size: 13px;
	color: var(--text-muted);
	line-height: 1.6;
	padding: 6px 0 7px;
	border-bottom: 2px solid var(--border);
	margin-bottom: 14px;
}

/* Stack summary */
.stack-summary {
	display: block;
}

.stack-bar {
	background: var(--bg-card);
	border: 2px solid var(--border);
	border-radius: 12px;
	padding: 15px 19px;
}

.stack-header {
	margin-bottom: 14px;
}

.stack-title {
	font-family: var(--sans);
	font-size: 13px;
	font-weight: 600;
	color: var(--amber);
	display: block;
}

.stack-count {
	font-family: var(--sans);
	font-size: 11px;
	color: var(--text-dim);
	display: block;
	margin-top: 2px;
}

.stack-actions {
	display: flex;
	gap: 8px;
	margin-top: 11px;
	padding-top: 11px;
	border-top: 2px solid var(--border);
}

.stack-copy {
	font-family: var(--sans);
	font-size: 12px;
	color: var(--green);
	cursor: pointer;
	background: var(--green-dim);
	border: none;
	padding: 7px 12px;
	border-radius: 6px;
	transition: opacity 0.15s, background 0.25s, color 0.25s;
	flex: 1;
	user-select: none;
}

.stack-copy.copying {
	animation: copyPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
	pointer-events: none;
	cursor: default;
	background: var(--accent-dim);
	color: var(--accent);
}

.stack-clear {
	font-family: var(--sans);
	font-size: 12px;
	color: var(--red);
	cursor: pointer;
	background: var(--red-dim);
	border: none;
	padding: 7px 12px;
	border-radius: 6px;
	transition: opacity 0.15s;
	flex: 1;
	user-select: none;
}

@media (hover: hover) {
	.stack-copy:hover { opacity: 0.8; }
	.stack-clear:hover { opacity: 0.8; }
}

.stack-group {
	margin-bottom: 10px;
}

.stack-group-label {
	font-family: var(--sans);
	font-size: 11px;
	color: var(--text-dim);
	text-transform: uppercase;
	letter-spacing: 0.6px;
	display: block;
	margin-bottom: 4px;
	cursor: pointer;
	user-select: none;
}

.chip-name { cursor: pointer; }

.stack-group-chips {
	display: flex;
	flex-wrap: wrap;
	gap: 4px;
}

.stack-items {
	display: flex;
	flex-direction: column;
	gap: 2px;
	max-height: 60vh;
	overflow-y: auto;
}

.stack-empty {
	font-family: var(--sans);
	font-size: 12px;
	color: var(--text-dim);
}

.stack-chip {
	font-family: var(--sans);
	font-size: 12px;
	padding: 5px 10px;
	border-radius: 6px;
	display: flex;
	align-items: center;
	gap: 6px;
	user-select: none;
	animation: chipIn 0.13s ease-out both;
}


.stack-chip .chip-remove {
	cursor: pointer;
	opacity: 0.4;
	transition: opacity 0.15s;
	display: flex;
	align-items: center;
	padding: 8px;
	margin: -8px;
}

@media (hover: hover) {
	.stack-chip .chip-remove:hover { opacity: 1; }
}

.stack-group-chips .stack-chip { background: var(--accent-dim); color: var(--accent); }
.stack-group-chips .stack-chip.multi-layer { background: var(--amber-dim); color: var(--amber); }

.search-wrap {
	position: relative;
	margin-bottom: 10px;
}

.cat-controls {
	display: flex;
	justify-content: flex-end;
	margin-bottom: 14px;
}

#expand-all-btn {
	font-family: var(--sans);
	font-size: 11px;
	color: var(--text-dim);
	background: none;
	border: none;
	cursor: pointer;
	padding: 4px 6px;
	border-radius: 4px;
	transition: color 0.15s;
	user-select: none;
}

@media (hover: hover) {
	#expand-all-btn:hover { color: var(--text); }
}

.search-wrap input {
	width: 100%;
	font-family: var(--sans);
	font-size: 13px;
	padding: 11px 34px 11px 39px;
	background: var(--bg-card);
	border: 2px solid var(--border);
	border-radius: 8px;
	color: var(--text);
	outline: none;
	transition: border-color 0.2s;
}

.search-wrap input:focus { border-color: var(--accent); }
.search-wrap input::placeholder { color: var(--text-dim); }

.search-wrap .search-icon {
	position: absolute;
	left: 13px;
	top: 50%;
	transform: translateY(-50%);
	color: var(--text-dim);
	pointer-events: none;
	display: flex;
	align-items: center;
}

.search-clear {
	position: absolute;
	right: 10px;
	top: 50%;
	transform: translateY(-50%);
	background: none;
	border: none;
	cursor: pointer;
	color: var(--text-dim);
	display: flex;
	align-items: center;
	padding: 4px;
	border-radius: 4px;
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.15s, color 0.15s;
}

.search-clear.visible {
	opacity: 1;
	pointer-events: auto;
}

@media (hover: hover) {
	.search-clear:hover { color: var(--text); }
}

/* Help button */
#help-btn {
	position: fixed;
	bottom: 24px;
	right: 24px;
	z-index: 150;
	width: 36px;
	height: 36px;
	border-radius: 50%;
	border: 2px solid var(--border);
	background: var(--bg-card);
	color: var(--text-dim);
	font-size: 16px;
	font-weight: 700;
	cursor: pointer;
	transition: border-color 0.15s, color 0.15s, transform 0.15s;
}

@media (hover: hover) {
	#help-btn:hover {
		border-color: var(--accent);
		color: var(--accent);
		transform: scale(1.1);
	}
}

/* Shortcuts modal */
#shortcuts-overlay {
	position: fixed;
	inset: 0;
	z-index: 200;
	background: rgba(0, 0, 0, 0.5);
	display: none;
}

#shortcuts-overlay.open {
	display: block;
	animation: fadeIn 0.15s ease;
}

#shortcuts-overlay.closing {
	display: block;
	animation: fadeOut 0.15s ease forwards;
}

#shortcuts-overlay.closing #shortcuts-sheet {
	animation: scaleOut 0.15s ease forwards;
}

#shortcuts-sheet {
	position: fixed;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	background: var(--bg-card);
	border: 2px solid var(--border);
	border-radius: 12px;
	padding: 23px;
	max-height: 80vh;
	max-width: 380px;
	width: calc(100% - 32px);
	overflow-y: auto;
	animation: scaleIn 0.15s ease;
}

.shortcut-row {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 16px;
	padding: 7px 0;
	border-bottom: 1px solid var(--border);
}

.shortcut-row:last-child { border-bottom: none; }

.shortcuts-section-label {
	font-size: 11px;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--text-dim);
	padding: 14px 0 6px;
}

.legend-row {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 5px 0;
	border-bottom: 1px solid var(--border);
}

.legend-row:last-child { border-bottom: none; }

.legend-swatch {
	width: 18px;
	height: 18px;
	border-radius: 4px;
	flex-shrink: 0;
}

.legend-desc {
	font-size: 13px;
	color: var(--text-muted);
}

.shortcut-key {
	font-family: monospace;
	background: var(--bg);
	border: 1px solid var(--border);
	border-radius: 4px;
	padding: 2px 7px;
	font-size: 12px;
	color: var(--text-muted);
	white-space: nowrap;
	flex-shrink: 0;
}

.shortcut-desc {
	font-size: 13px;
	color: var(--text-muted);
	text-align: left;
}

@media (max-width: 768px) {
	.app {
		grid-template-columns: 1fr;
		padding: 20px 16px 40px;
	}
	.sidebar-col {
		position: static;
		order: -1;
	}
	header { margin-bottom: 28px; }
	header h1 { font-size: 22px; }
	.cat-desc { display: none; }
	.cat-body { padding-left: 28px; }
	.stack-items { max-height: 25vh; }
}