/* rf-forms: Rainmatter's public design system (rf-website DESIGN.md, Palette
   4.1). Every colour, face and size is a token below; rules use tokens only.
   Light only, as on rainmatter.org. */

@font-face {
	font-family: "Public Sans";
	font-weight: 300 900;
	font-display: swap;
	src: url("/fonts/public-sans.woff2") format("woff2");
}
@font-face {
	font-family: "Noto Sans";
	font-weight: 300 800;
	font-display: swap;
	src: url("/fonts/noto-sans.woff2") format("woff2");
}

:root {
	color-scheme: light;

	--rf-bone: #fcfbf9;
	--rf-paper: #ffffff;
	--rf-ink: #06110f;
	--rf-muted: #5a6b5e;
	--rf-line: #e6e9e2;
	--rf-mist: #f2f5f0;
	--rf-accent: #7a1603;
	--rf-accent-deep: #5c1002;
	--rf-forest: #145327;
	--rf-on-fill: #fcfbf9;
	--rf-sage: #cde0cb;
	--rf-sand: #fdcd65;
	--rf-danger: #c7130b;
	/* Input borders: a control needs 3:1 against its ground. */
	--rf-control-line: var(--rf-muted);

	--font-display: "Public Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
	--font-body: "Noto Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

	--rf-fs-title: clamp(2.25rem, 1.6rem + 2.8vw, 3.5rem);
	--rf-fs-sub: clamp(1.125rem, 1.05rem + 0.35vw, 1.375rem);
	--rf-fs-body: 1rem;
	--rf-fs-small: 0.9375rem;

	--rf-gutter: 16px;
	--rf-space-1: 0.25rem;
	--rf-space-2: 0.5rem;
	--rf-space-3: 0.75rem;
	--rf-space-4: 1rem;
	--rf-space-6: 1.5rem;
	--rf-space-8: 2rem;
	--rf-space-12: 3rem;
	--rf-radius: 6px;
	--rf-measure: 44rem;
	--rf-target: 2.75rem;

	/* Grounds (DESIGN.md 4): interactive colour resolves through these. */
	--band-ink: var(--rf-ink);
	--band-quiet: var(--rf-muted);
	--band-link: var(--rf-accent);
	--band-link-hover: var(--rf-accent-deep);
	--band-focus: var(--rf-accent);
}

/* Forest ground: links and focus take sand, never the accent (1.18:1). */
.head,
header.site {
	--band-ink: var(--rf-on-fill);
	--band-quiet: var(--rf-sage);
	--band-link: var(--rf-sand);
	--band-link-hover: var(--rf-on-fill);
	--band-focus: var(--rf-sand);
}

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

html {
	-webkit-text-size-adjust: 100%;
}

/* `hidden` wins over any display rule below. */
[hidden] {
	display: none !important;
}

body {
	margin: 0;
	background: var(--rf-bone);
	color: var(--rf-ink);
	font-family: var(--font-body);
	font-size: var(--rf-fs-body);
	line-height: 1.6;
	font-variant-numeric: tabular-nums;
}

h1,
h2,
legend {
	font-family: var(--font-display);
	line-height: 1.2;
}

a {
	color: var(--band-link);
	text-underline-offset: 0.15em;
}
a:hover {
	color: var(--band-link-hover);
}

:where(a, button, input, textarea, select, summary):focus-visible {
	outline: 3px solid var(--band-focus);
	outline-offset: 2px;
}

.wrap {
	max-width: var(--rf-measure);
	margin: 0 auto;
	padding: 0 var(--rf-gutter);
}

.vh {
	position: absolute;
	width: 1px;
	height: 1px;
	overflow: hidden;
	clip-path: inset(50%);
	white-space: nowrap;
}

.skip {
	position: absolute;
	left: var(--rf-gutter);
	top: -4rem;
	padding: var(--rf-space-2) var(--rf-space-4);
	background: var(--rf-paper);
	color: var(--rf-accent);
	z-index: 1;
}
.skip:focus {
	top: var(--rf-space-2);
}

/* ---- header and page head (forest ground, contour signature) ------------ */

header.site {
	background: var(--rf-forest);
	color: var(--band-ink);
	padding: var(--rf-space-4) 0 0;
}
.brand {
	font-family: var(--font-display);
	font-weight: 700;
	color: var(--band-ink);
	text-decoration: none;
	letter-spacing: 0.01em;
}
.brand:hover {
	color: var(--band-link);
}

.head {
	position: relative;
	background: var(--rf-forest);
	color: var(--band-ink);
	padding: var(--rf-space-8) 0 var(--rf-space-12);
	overflow: hidden;
}
.head h1 {
	font-size: var(--rf-fs-title);
	font-weight: 700;
	margin: 0 0 var(--rf-space-3);
}
.lede {
	margin: 0;
	color: var(--band-quiet);
	font-size: var(--rf-fs-sub);
	font-family: var(--font-display);
	font-weight: 400;
}
.contour {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	width: 100%;
	height: 3.5rem;
	fill: none;
	stroke: var(--rf-sage);
	stroke-width: 1.25;
	opacity: 0.55;
	pointer-events: none;
}

.content {
	padding-top: var(--rf-space-8);
	padding-bottom: var(--rf-space-12);
}

/* ---- form ---------------------------------------------------------------- */

.form > .hint {
	margin-top: 0;
}

fieldset {
	border: 0;
	margin: 0;
	padding: 0;
	min-width: 0;
}

.section {
	margin: 0 0 var(--rf-space-8);
	padding-top: var(--rf-space-6);
	border-top: 1px solid var(--rf-line);
}
.section > legend {
	font-size: var(--rf-fs-sub);
	font-weight: 700;
	padding: 0;
	margin-bottom: var(--rf-space-4);
	display: flex;
	align-items: center;
	gap: var(--rf-space-3);
}
.step {
	display: inline-grid;
	place-items: center;
	width: 2rem;
	height: 2rem;
	border-radius: 50%;
	background: var(--rf-forest);
	color: var(--rf-on-fill);
	font-size: var(--rf-fs-small);
}

.field {
	margin: 0 0 var(--rf-space-6);
}
.field > label,
.group > legend,
.sub > label {
	display: block;
	font-weight: 600;
	margin-bottom: var(--rf-space-1);
}
.group > legend {
	font-family: var(--font-body);
	font-size: var(--rf-fs-body);
	padding: 0;
}

.hint,
.note {
	color: var(--band-quiet);
	font-size: var(--rf-fs-small);
	margin: 0 0 var(--rf-space-2);
}
.note {
	color: var(--rf-ink);
	border-left: 3px solid var(--rf-accent);
	padding-left: var(--rf-space-3);
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
	display: block;
	width: 100%;
	min-height: var(--rf-target);
	padding: var(--rf-space-2) var(--rf-space-3);
	font: inherit;
	color: var(--rf-ink);
	background: var(--rf-paper);
	border: 1px solid var(--rf-control-line);
	border-radius: var(--rf-radius);
}
textarea {
	resize: vertical;
	min-height: 8rem;
}
input[type="file"] {
	display: block;
	width: 100%;
	font: inherit;
	padding: var(--rf-space-2) 0;
}

.invalid input,
.invalid textarea,
.invalid select,
[aria-invalid="true"] {
	border-color: var(--rf-danger);
	border-width: 2px;
}
.error {
	color: var(--rf-danger);
	font-weight: 600;
	font-size: var(--rf-fs-small);
	margin: 0 0 var(--rf-space-2);
}

.link-row {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--rf-space-2);
	margin-bottom: var(--rf-space-3);
	padding-bottom: var(--rf-space-3);
	border-bottom: 1px dashed var(--rf-line);
}
.sub > label {
	font-weight: 400;
	font-size: var(--rf-fs-small);
}
@media (min-width: 40rem) {
	.link-row {
		grid-template-columns: 11rem 1fr;
		border-bottom: 0;
		padding-bottom: 0;
	}
}

.notice {
	background: var(--rf-mist);
	border-radius: var(--rf-radius);
	padding: var(--rf-space-3) var(--rf-space-4);
	margin-bottom: var(--rf-space-3);
	font-size: var(--rf-fs-small);
}
.notice p {
	margin: 0 0 var(--rf-space-1);
}
.notice p:last-child {
	margin: 0;
}

.check {
	display: flex;
	gap: var(--rf-space-3);
	align-items: flex-start;
}
.check input {
	flex: none;
	width: 1.5rem;
	height: 1.5rem;
	margin: 0.1rem 0 0;
	accent-color: var(--rf-forest);
}
.check label {
	font-weight: 600;
}

.located {
	margin: 0 0 var(--rf-space-2);
}
.located:empty {
	display: none;
}
.actions {
	display: flex;
	flex-wrap: wrap;
	gap: var(--rf-space-3);
}

/* The honeypot: off-screen for people, present for bots. */
.hp {
	position: absolute;
	left: -10000px;
	width: 1px;
	height: 1px;
	overflow: hidden;
}

.send {
	border-top: 1px solid var(--rf-line);
	padding-top: var(--rf-space-6);
}
.cf-turnstile {
	margin-bottom: var(--rf-space-4);
}

/* ---- buttons ------------------------------------------------------------- */

button {
	font: inherit;
	cursor: pointer;
	min-height: var(--rf-target);
	border-radius: var(--rf-radius);
}
.primary {
	width: 100%;
	padding: var(--rf-space-3) var(--rf-space-6);
	background: var(--rf-accent);
	color: var(--rf-on-fill);
	border: 0;
	font-family: var(--font-display);
	font-weight: 700;
	font-size: var(--rf-fs-sub);
}
.primary:hover {
	background: var(--rf-accent-deep);
}
.primary[aria-busy="true"] {
	cursor: progress;
}
@media (min-width: 40rem) {
	.primary {
		width: auto;
	}
}
.secondary {
	padding: var(--rf-space-2) var(--rf-space-4);
	background: var(--rf-paper);
	color: var(--rf-accent);
	border: 1px solid var(--rf-accent);
	font-weight: 600;
}
.secondary:hover {
	color: var(--rf-accent-deep);
	border-color: var(--rf-accent-deep);
}
.link {
	background: none;
	border: 0;
	padding: 0 var(--rf-space-1);
	color: var(--band-link);
	text-decoration: underline;
}

/* ---- messages ------------------------------------------------------------ */

.alert {
	border: 2px solid var(--rf-danger);
	border-left-width: 6px;
	background: var(--rf-paper);
	border-radius: var(--rf-radius);
	padding: var(--rf-space-4);
	margin-bottom: var(--rf-space-8);
}
.alert h2 {
	font-size: var(--rf-fs-sub);
	margin: 0 0 var(--rf-space-2);
}
.alert p,
.alert ul {
	margin: 0;
}
.alert ul {
	padding-left: var(--rf-space-6);
}
.alert li + li {
	margin-top: var(--rf-space-1);
}

.reference {
	font-family: var(--font-display);
	margin: 0 0 var(--rf-space-6);
}
.reference strong {
	display: block;
	font-size: var(--rf-fs-title);
	letter-spacing: 0.04em;
	color: var(--rf-ink);
}

.forms {
	list-style: none;
	padding: 0;
}

footer.site {
	border-top: 1px solid var(--rf-line);
	color: var(--band-quiet);
	font-size: var(--rf-fs-small);
	padding: var(--rf-space-6) 0;
}

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation: none !important;
		transition: none !important;
		scroll-behavior: auto !important;
	}
}