/* HV Gutter Visualizer — public */

.hvgv {
	--hvgv-primary: #1e5a8e;
	--hvgv-border: #d8dee6;
	--hvgv-bg: #f7f9fc;
	max-width: 1135px;
	margin: 0 auto;
	font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
	color: #1a1a1a;
}

.hvgv__header {
	margin-bottom: 1rem;
}

.hvgv__title {
	margin: 0 0 0.35rem;
	font-size: 1.5rem;
	font-weight: 700;
	color: var(--hvgv-primary);
}

.hvgv__subtitle {
	margin: 0;
	font-size: 0.95rem;
	color: #444;
	line-height: 1.45;
}

.hvgv__toolbar {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	align-items: center;
	margin-bottom: 0.75rem;
}

.hvgv__btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 0.5rem 1rem;
	font-size: 0.9rem;
	font-weight: 600;
	border-radius: 6px;
	border: 1px solid var(--hvgv-border);
	background: #fff;
	cursor: pointer;
	color: #222;
}

.hvgv__btn:hover {
	filter: brightness(0.97);
}

.hvgv__btn--primary {
	background: var(--hvgv-primary);
	color: #fff;
	border-color: var(--hvgv-primary);
}

.hvgv__btn--secondary {
	background: var(--hvgv-bg);
}

.hvgv__btn--ghost {
	background: transparent;
	font-weight: 500;
}

.hvgv__btn--small {
	padding: 0.35rem 0.65rem;
	font-size: 0.8rem;
}

.hvgv__btn--file {
	position: relative;
	overflow: hidden;
	min-height: 2.5rem;
	min-width: 8.5rem;
}

.hvgv__btn--file .hvgv__btn-label {
	position: relative;
	z-index: 0;
	pointer-events: none;
}

.hvgv__btn--file input {
	position: absolute;
	inset: 0;
	z-index: 1;
	opacity: 0;
	cursor: pointer;
	font-size: 1.25rem;
}

.hvgv__toasts {
	position: fixed;
	bottom: 1.25rem;
	right: 1.25rem;
	z-index: 100050;
	display: flex;
	flex-direction: column;
	gap: 0.5rem;
	align-items: flex-end;
	max-width: min(22rem, calc(100vw - 2rem));
	pointer-events: none;
}

.hvgv__toast {
	pointer-events: auto;
	margin: 0;
	padding: 0.8rem 1rem;
	border-radius: 8px;
	font-size: 0.9rem;
	line-height: 1.4;
	box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
	animation: hvgv-toast-in 0.28s ease;
}

.hvgv__toast--success {
	background: #ecfdf5;
	border: 1px solid #6ee7b7;
	color: #065f46;
}

.hvgv__toast--error {
	background: #fef2f2;
	border: 1px solid #fca5a5;
	color: #991b1b;
}

.hvgv__toast--out {
	opacity: 0;
	transform: translateY(6px);
	transition: opacity 0.28s ease, transform 0.28s ease;
}

@keyframes hvgv-toast-in {
	from {
		opacity: 0;
		transform: translateY(8px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.hvgv__upload-hint {
	margin: 0 0 0.75rem;
	font-size: 0.85rem;
	color: #555;
}

.hvgv__trace-panel {
	padding: 0.75rem 1rem;
	background: #fff8e6;
	border: 1px solid #f0d78c;
	border-radius: 8px;
	margin-bottom: 0.75rem;
}

.hvgv__trace-panel--hidden {
	display: none;
}

.hvgv__trace-hint {
	margin: 0 0 0.5rem;
	font-size: 0.85rem;
}

.hvgv__trace-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.35rem;
	margin-bottom: 0.35rem;
}

.hvgv__trace-help {
	margin: 0;
	font-size: 0.8rem;
	color: #555;
}

.hvgv__stage {
	margin-bottom: 1rem;
}

.hvgv__viz {
	position: relative;
	width: 100%;
	max-width: 1135px;
	margin: 0 auto;
	background: #e8ecf2;
	border-radius: 8px;
	overflow: hidden;
	border: 1px solid var(--hvgv-border);
}

.hvgv__img {
	display: block;
	width: 100%;
	height: auto;
	vertical-align: middle;
}

.hvgv__svg {
	position: absolute;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
}

.hvgv--tracing .hvgv__svg {
	pointer-events: auto;
	cursor: crosshair;
	touch-action: none;
}

.hvgv--tracing .hvgv__viz {
	touch-action: none;
}

.hvgv__controls {
	display: flex;
	flex-direction: column;
	gap: 1rem;
	padding: 1rem;
	background: var(--hvgv-bg);
	border-radius: 8px;
	border: 1px solid var(--hvgv-border);
}

.hvgv__field-label {
	display: block;
	font-size: 0.75rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: #555;
	margin-bottom: 0.35rem;
}

.hvgv__row {
	display: flex;
	gap: 0.75rem;
	flex-wrap: wrap;
}

.hvgv__field--grow {
	flex: 1 1 140px;
}

.hvgv__select {
	width: 100%;
	padding: 0.45rem 0.5rem;
	border-radius: 6px;
	border: 1px solid var(--hvgv-border);
	font-size: 0.9rem;
	background: #fff;
}

.hvgv__chips {
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
}

.hvgv__chip {
	width: 2.25rem;
	height: 2.25rem;
	border-radius: 50%;
	border: 2px solid #fff;
	box-shadow: 0 0 0 1px var(--hvgv-border);
	cursor: pointer;
	padding: 0;
}

.hvgv__chip[aria-pressed="true"] {
	box-shadow: 0 0 0 2px var(--hvgv-primary);
}

.hvgv__chip:focus-visible {
	outline: 2px solid var(--hvgv-primary);
	outline-offset: 2px;
}