/*
 * BreatheErie — PurpleAir history widget.
 *
 * Tuned to the site's own palette (warm cream ground, teal accent) rather than
 * generic chart-library defaults, so the widget reads as part of the page instead
 * of something embedded into it.
 */

.bpa {
	--bpa-ink: #1a1a1a;
	--bpa-ink-soft: #5f5b54;
	--bpa-ink-faint: #8c877e;
	--bpa-line: #ddd7cc;
	--bpa-line-soft: #e9e4da;
	--bpa-surface: #fbf9f5;
	--bpa-surface-alt: #f4f1ea;
	--bpa-accent: #1a5f7a;
	--bpa-accent-soft: rgba(26, 95, 122, 0.08);
	--bpa-radius: 10px;
	--bpa-radius-sm: 7px;

	margin: 2rem 0;
	color: var(--bpa-ink);
	font-size: 15px;
	line-height: 1.5;
	-webkit-font-smoothing: antialiased;
}

.bpa *,
.bpa *::before,
.bpa *::after {
	box-sizing: border-box;
}

.bpa__title {
	margin: 0 0 1rem;
	font-size: 1.3rem;
	letter-spacing: -0.01em;
}

/* ---------------------------------------------------------------- Current conditions */

.bpa-now {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 1.5rem;
	padding: 1.4rem 1.6rem;
	margin-bottom: 1rem;
	background: var(--bpa-surface);
	border: 1px solid var(--bpa-line);
	border-radius: var(--bpa-radius);
}

.bpa-now[hidden] {
	display: none;
}

.bpa-now__label {
	font-size: 0.68rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.14em;
	color: var(--bpa-ink-faint);
}

.bpa-now__value {
	display: flex;
	align-items: center;
	gap: 0.6rem;
	margin: 0.3rem 0 0.15rem;
}

.bpa-now__aqi {
	font-size: 3.1rem;
	font-weight: 800;
	line-height: 1;
	letter-spacing: -0.03em;
	font-variant-numeric: tabular-nums;
}

.bpa-now__chip {
	display: inline-block;
	padding: 0.22rem 0.6rem;
	border-radius: 999px;
	font-size: 0.72rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	white-space: nowrap;
	background: var(--bpa-surface-alt);
	color: var(--bpa-ink-soft);
}

.bpa-now__chip:empty {
	display: none;
}

.bpa-now__sub {
	font-size: 0.76rem;
	color: var(--bpa-ink-faint);
}

.bpa-now__divider {
	width: 1px;
	align-self: stretch;
	background: var(--bpa-line-soft);
}

.bpa-now__stats {
	display: flex;
	flex-wrap: wrap;
	gap: 1.4rem;
}

.bpa-stat {
	display: flex;
	flex-direction: column;
	gap: 0.1rem;
	min-width: 92px;
}

.bpa-stat__k {
	font-size: 0.66rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.09em;
	color: var(--bpa-ink-faint);
}

.bpa-stat__v {
	font-size: 1.35rem;
	font-weight: 700;
	line-height: 1.1;
	font-variant-numeric: tabular-nums;
}

.bpa-stat__u {
	font-size: 0.68rem;
	color: var(--bpa-ink-faint);
}

.bpa-now__meta {
	flex-basis: 100%;
	padding-top: 0.9rem;
	border-top: 1px solid var(--bpa-line-soft);
	font-size: 0.74rem;
	color: var(--bpa-ink-faint);
}

.bpa-now__meta:empty {
	display: none;
}

/* ------------------------------------------------------------------------- Panel */

.bpa-panel {
	background: var(--bpa-surface);
	border: 1px solid var(--bpa-line);
	border-radius: var(--bpa-radius);
	overflow: hidden;
}

.bpa-toolbar {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-end;
	justify-content: space-between;
	gap: 1rem;
	padding: 1rem 1.2rem;
	border-bottom: 1px solid var(--bpa-line-soft);
}

.bpa-toolbar--sub {
	background: var(--bpa-surface-alt);
	padding-top: 0.85rem;
	padding-bottom: 0.85rem;
}

/* Segmented range control */

.bpa-seg {
	display: inline-flex;
	padding: 3px;
	background: var(--bpa-surface-alt);
	border: 1px solid var(--bpa-line-soft);
	border-radius: 999px;
}

.bpa-seg__btn {
	appearance: none;
	border: 0;
	background: transparent;
	padding: 0.38rem 0.85rem;
	border-radius: 999px;
	font: inherit;
	font-size: 0.82rem;
	font-weight: 600;
	color: var(--bpa-ink-soft);
	cursor: pointer;
	white-space: nowrap;
	transition: background-color .15s ease, color .15s ease;
}

.bpa-seg__btn:hover {
	color: var(--bpa-ink);
}

.bpa-seg__btn.is-active {
	background: var(--bpa-accent);
	color: #fff;
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
}

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

/* Fields */

.bpa-field {
	display: flex;
	flex-direction: column;
	gap: 0.28rem;
}

.bpa-field__label {
	font-size: 0.64rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.11em;
	color: var(--bpa-ink-faint);
}

.bpa-input,
.bpa-select {
	appearance: none;
	font: inherit;
	font-size: 0.86rem;
	color: var(--bpa-ink);
	background: #fff;
	border: 1px solid var(--bpa-line);
	border-radius: var(--bpa-radius-sm);
	padding: 0.42rem 0.6rem;
	line-height: 1.3;
}

.bpa-select {
	padding-right: 2rem;
	background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath fill='%235f5b54' d='M1 1.5 6 6.5l5-5'/%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 0.65rem center;
	background-size: 10px;
	cursor: pointer;
}

.bpa-input:focus,
.bpa-select:focus {
	outline: 2px solid var(--bpa-accent);
	outline-offset: 1px;
	border-color: var(--bpa-accent);
}

.bpa-btn {
	appearance: none;
	font: inherit;
	font-size: 0.84rem;
	font-weight: 600;
	color: #fff;
	background: var(--bpa-accent);
	border: 1px solid var(--bpa-accent);
	border-radius: var(--bpa-radius-sm);
	padding: 0.46rem 1rem;
	cursor: pointer;
	transition: filter .15s ease;
}

.bpa-btn:hover {
	filter: brightness(1.1);
}

.bpa-dates {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-end;
	gap: 0.6rem;
}

.bpa-check {
	display: inline-flex;
	align-items: center;
	gap: 0.45rem;
	font-size: 0.82rem;
	color: var(--bpa-ink-soft);
	cursor: pointer;
	user-select: none;
}

.bpa-check input {
	accent-color: var(--bpa-accent);
	width: 15px;
	height: 15px;
	margin: 0;
}

/* --------------------------------------------------------------- Sensor disclosure */

.bpa-sensors {
	border-bottom: 1px solid var(--bpa-line-soft);
}

.bpa-sensors__summary {
	display: flex;
	align-items: baseline;
	gap: 0.5rem;
	padding: 0.75rem 1.2rem;
	cursor: pointer;
	font-size: 0.82rem;
	font-weight: 600;
	color: var(--bpa-ink-soft);
	list-style: none;
}

.bpa-sensors__summary::-webkit-details-marker {
	display: none;
}

.bpa-sensors__summary::before {
	content: "";
	width: 0;
	height: 0;
	border-left: 5px solid var(--bpa-ink-faint);
	border-top: 4px solid transparent;
	border-bottom: 4px solid transparent;
	transition: transform .15s ease;
	transform-origin: 25% 50%;
}

.bpa-sensors[open] .bpa-sensors__summary::before {
	transform: rotate(90deg);
}

.bpa-sensors__hint {
	font-weight: 400;
	font-size: 0.74rem;
	color: var(--bpa-ink-faint);
}

.bpa-sensors__list {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
	gap: 0.4rem 1rem;
	padding: 0 1.2rem 1rem;
}

.bpa-sensor {
	display: flex;
	align-items: center;
	gap: 0.45rem;
	font-size: 0.82rem;
	color: var(--bpa-ink-soft);
	cursor: pointer;
	min-width: 0;
}

.bpa-sensor input {
	accent-color: var(--bpa-accent);
	width: 15px;
	height: 15px;
	margin: 0;
	flex: none;
}

.bpa-sensor span {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

/* ------------------------------------------------------------------------- Chart */

.bpa-chart {
	position: relative;
	padding: 1.1rem 1.2rem 0.4rem;
}

.bpa-chart__canvas {
	position: relative;
	width: 100%;
}

.bpa-canvas {
	width: 100% !important;
}

.bpa-chart__status {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	font-size: 0.78rem;
	color: var(--bpa-ink-faint);
	margin-bottom: 0.7rem;
	min-height: 1.2rem;
}

.bpa-chart__status.is-error .bpa-chart__statustext {
	color: #a8342c;
}

.bpa-spinner {
	width: 12px;
	height: 12px;
	flex: none;
	border: 2px solid var(--bpa-line);
	border-top-color: var(--bpa-accent);
	border-radius: 50%;
	animation: bpa-spin .7s linear infinite;
}

.bpa-chart__status:not(.is-loading) .bpa-spinner {
	display: none;
}

@keyframes bpa-spin {
	to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
	.bpa-spinner { animation: none; }
}

/* Empty state sits over the canvas area rather than collapsing the layout. */

.bpa-empty {
	position: absolute;
	inset: 0;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 0.35rem;
	text-align: center;
	padding: 1rem;
	color: var(--bpa-ink-faint);
}

.bpa-empty__title {
	font-size: 0.92rem;
	font-weight: 600;
	color: var(--bpa-ink-soft);
}

.bpa-empty__body {
	font-size: 0.8rem;
	max-width: 34ch;
	line-height: 1.45;
}

/* ------------------------------------------------------------------------ Legend */

.bpa-legendnote {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.35rem 1.1rem;
	padding: 0.7rem 1.2rem 0.9rem;
	border-top: 1px solid var(--bpa-line-soft);
	font-size: 0.73rem;
	color: var(--bpa-ink-faint);
}

.bpa-key {
	display: inline-block;
	width: 18px;
	height: 3px;
	border-radius: 2px;
	margin-right: -0.55rem;
	vertical-align: middle;
}

.bpa-key--ref    { background: #0d47a1; }
.bpa-key--area   { background: #1a1a1a; }
.bpa-key--sensor { background: repeating-linear-gradient(90deg, #a49b8c 0 4px, transparent 4px 7px); }

.bpa-footnote {
	margin: 0.9rem 0 0;
	font-size: 0.76rem;
	line-height: 1.55;
	color: var(--bpa-ink-faint);
}

/* ---------------------------------------------------------------------- Responsive */

@media (max-width: 782px) {
	.bpa-now {
		gap: 1rem;
		padding: 1.1rem 1.2rem;
	}

	.bpa-now__divider {
		display: none;
	}

	.bpa-now__primary,
	.bpa-now__stats {
		flex-basis: 100%;
	}

	.bpa-now__stats {
		gap: 1rem;
		padding-top: 0.9rem;
		border-top: 1px solid var(--bpa-line-soft);
	}

	.bpa-now__aqi {
		font-size: 2.6rem;
	}

	.bpa-toolbar {
		align-items: stretch;
		flex-direction: column;
	}

	.bpa-seg {
		overflow-x: auto;
		-webkit-overflow-scrolling: touch;
	}

	.bpa-dates {
		width: 100%;
	}

	.bpa-dates .bpa-field {
		flex: 1 1 42%;
	}

	.bpa-input,
	.bpa-select {
		width: 100%;
	}
}

/* The theme is light-only, so the widget commits to the same and simply keeps its
   own colours rather than inheriting a half-applied dark palette. */