/* Reusable interface pieces. */

/* ---------- Buttons. Pill shape is the documented exception to --radius. ---------- */

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.5em;
	white-space: nowrap;
	padding: 0.78em 1.5em;
	border: 1px solid transparent;
	border-radius: var(--radius-pill);
	font-size: var(--step--1);
	font-weight: 550;
	letter-spacing: -0.01em;
	text-decoration: none;
	cursor: pointer;
	transition:
		background var(--dur-fast) var(--ease),
		border-color var(--dur-fast) var(--ease),
		transform var(--dur-fast) var(--ease),
		box-shadow var(--dur) var(--ease);
}

.btn .icon {
	transition: transform var(--dur) var(--ease);
}

.btn:hover .icon {
	transform: translateX(3px);
}

button.btn {
	font-family: inherit;
}

.btn:disabled {
	opacity: 0.55;
	cursor: not-allowed;
	transform: none;
	box-shadow: none;
}

.btn:disabled:hover .icon {
	transform: none;
}

.btn--primary {
	background: var(--accent);
	color: #fff;
	-webkit-text-fill-color: #fff;
	box-shadow: var(--shadow-accent);
}

.btn--primary:hover {
	background: #1a63f5;
	color: #fff;
	-webkit-text-fill-color: #fff;
}

button.btn.btn--primary,
button.btn.btn--primary:hover,
a.btn.btn--primary,
a.btn.btn--primary:hover {
	color: #fff;
	-webkit-text-fill-color: #fff;
}

.btn--primary .icon {
	color: currentColor;
	stroke: currentColor;
}

.btn--secondary {
	background: var(--surface-3);
	border-color: var(--line-strong);
	color: var(--text);
}

.btn--secondary:hover {
	background: var(--line);
	border-color: var(--accent-line);
	color: var(--text);
}

.btn--ghost {
	background: transparent;
	border-color: var(--line-strong);
	color: var(--text);
}

.btn--ghost:hover {
	border-color: var(--accent);
	color: var(--text);
}

/* ---------- Header ---------- */

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: rgba(255, 255, 255, 0.78);
	backdrop-filter: blur(18px) saturate(160%);
	-webkit-backdrop-filter: blur(18px) saturate(160%);
	border-bottom: 1px solid transparent;
	transition:
		border-color var(--dur) var(--ease),
		background var(--dur) var(--ease);
}

.site-header.is-stuck {
	border-bottom-color: var(--line);
	background: rgba(255, 255, 255, 0.94);
}

html.is-nav-open {
	overflow: hidden;
	overscroll-behavior: none;
}

.site-header__inner {
	display: flex;
	align-items: center;
	gap: var(--space-l);
	min-height: var(--header-h);
}

.logo {
	display: inline-flex;
	align-items: center;
	color: var(--text);
	text-decoration: none;
	flex-shrink: 0;
}

.logo img,
.logo svg {
	height: 32px;
	width: auto;
}

.logo__word {
	font-size: 1.35rem;
	font-weight: 650;
	letter-spacing: -0.045em;
}

.nav {
	margin-inline-start: auto;
}

.nav__list {
	display: flex;
	align-items: center;
	gap: var(--space-2xs);
	list-style: none;
	padding: 0;
	margin: 0;
}

.nav__item {
	position: relative;
	display: flex;
	align-items: center;
}

.nav__link {
	display: inline-block;
	padding: 0.5em 0.8em;
	border-radius: var(--radius-pill);
	color: var(--text-muted);
	font-size: var(--step--1);
	font-weight: 500;
	text-decoration: none;
	transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}

.nav__link:hover,
.nav__item.is-current > .nav__link {
	color: var(--text);
	background: var(--surface-3);
}

.nav__toggle {
	display: grid;
	place-items: center;
	padding: 0.25em;
	margin-inline-start: -0.5em;
	background: none;
	border: 0;
	color: var(--text-faint);
	cursor: pointer;
	transition: transform var(--dur) var(--ease), color var(--dur-fast) var(--ease);
}

/*
 * Parent items: the pill wraps the label and the chevron as one control.
 * Mobile keeps the toggle on its own so the row can still split.
 */
@media (min-width: 901px) {
	.nav__item--parent {
		border-radius: var(--radius-pill);
		transition: background var(--dur-fast) var(--ease);
	}

	.nav__item--parent:hover,
	.nav__item--parent:focus-within,
	.nav__item--parent.is-current {
		background: var(--surface-3);
	}

	.nav__item--parent > .nav__link {
		padding-inline-end: 0.3em;
	}

	.nav__item--parent:hover > .nav__link,
	.nav__item--parent:focus-within > .nav__link,
	.nav__item--parent.is-current > .nav__link {
		background: transparent;
		color: var(--text);
	}

	.nav__item--parent > .nav__toggle {
		margin-inline: 0 0.45em;
		padding: 0.2em 0.35em 0.2em 0.1em;
	}

	.nav__item--parent:hover > .nav__toggle,
	.nav__item--parent:focus-within > .nav__toggle,
	.nav__item--parent.is-current > .nav__toggle {
		color: var(--text);
	}
}

.nav__toggle[aria-expanded='true'] {
	transform: rotate(180deg);
}

.nav__submenu {
	position: absolute;
	top: 100%;
	left: 0;
	z-index: 2;
	min-width: 230px;
	padding: var(--space-2xs);
	margin: 0;
	list-style: none;
	background: var(--surface-2);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	box-shadow: var(--shadow-lg);
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
	transform: translateY(-6px);
	transition:
		opacity var(--dur-fast) var(--ease),
		transform var(--dur-fast) var(--ease);
}

.nav__item--parent:hover > .nav__submenu,
.nav__item--parent:focus-within > .nav__submenu,
.nav__submenu.is-open {
	opacity: 1;
	visibility: visible;
	pointer-events: auto;
	transform: none;
}

.nav__submenu .nav__link {
	display: block;
	width: 100%;
	border-radius: 10px;
}

.header__actions {
	display: flex;
	align-items: center;
	gap: var(--space-xs);
	flex-shrink: 0;
}

.burger {
	display: none;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	padding: 0;
	color: var(--text);
	background: var(--surface-3);
	border: 1px solid var(--line);
	border-radius: var(--radius-pill);
	cursor: pointer;
}

.burger .icon {
	width: 22px;
	height: 22px;
	flex-shrink: 0;
}

.burger .icon--x {
	display: none;
}

.burger[aria-expanded='true'] .icon--menu {
	display: none;
}

.burger[aria-expanded='true'] .icon--x {
	display: block;
}

@media (max-width: 900px) {
	html.is-nav-open .site-header {
		position: fixed;
		top: 0;
		left: 0;
		right: 0;
		width: 100%;
	}

	.site-header__inner {
		gap: 0.65rem;
		justify-content: space-between;
	}

	.logo img,
	.logo svg {
		height: 26px;
	}

	.header__actions {
		margin-inline-start: auto;
		gap: 0.55rem;
	}

	.header__actions .btn {
		padding: 0.5em 0.9em;
		font-size: 0.8125rem;
		min-height: 44px;
	}

	.header__actions .btn .icon {
		display: none;
	}

	.burger {
		display: inline-flex;
		flex-shrink: 0;
	}

	.nav {
		margin-inline-start: 0;
		position: fixed;
		z-index: 90;
		inset: var(--header-h) 0 auto 0;
		max-height: calc(100dvh - var(--header-h));
		overflow-y: auto;
		padding: var(--space-m);
		background: var(--surface);
		border-bottom: 1px solid var(--line);
		transform: translateY(-8px);
		opacity: 0;
		visibility: hidden;
		transition:
			opacity var(--dur) var(--ease),
			transform var(--dur) var(--ease),
			visibility var(--dur);
	}

	.nav.is-open {
		opacity: 1;
		visibility: visible;
		transform: none;
	}

	.nav__list {
		flex-direction: column;
		align-items: stretch;
		gap: 2px;
	}

	.nav__item {
		flex-wrap: wrap;
		justify-content: space-between;
	}

	.nav__link {
		flex: 1;
		padding: 0.75em 0.9em;
		font-size: var(--step-0);
	}

	.nav__submenu {
		position: static;
		width: 100%;
		display: none;
		opacity: 1;
		visibility: visible;
		pointer-events: auto;
		transform: none;
		box-shadow: none;
		background: var(--bg);
	}

	.nav__submenu.is-open {
		display: block;
	}
}

@media (max-width: 360px) {
	.logo img,
	.logo svg {
		height: 22px;
	}

	.header__actions .btn {
		padding: 0.48em 0.72em;
		font-size: 0.75rem;
	}
}

/* ---------- Cards ---------- */

.card {
	position: relative;
	display: flex;
	flex-direction: column;
	gap: var(--space-s);
	padding: var(--space-m);
	background: var(--surface-2);
	border: 1px solid var(--line);
	border-radius: var(--radius);
	box-shadow: var(--shadow-xs);
}

a.card {
	text-decoration: none;
	color: inherit;
	transition:
		border-color var(--dur) var(--ease),
		box-shadow var(--dur) var(--ease),
		transform var(--dur) var(--ease);
}

a.card:hover {
	border-color: var(--accent-line);
	box-shadow: var(--shadow-md);
	transform: translateY(-3px);
}

.card__icon {
	display: grid;
	place-items: center;
	width: 44px;
	height: 44px;
	border-radius: 12px;
	background: var(--accent-soft);
	border: 1px solid var(--accent-line);
	color: var(--accent);
}

.card p {
	color: var(--text-muted);
	font-size: var(--step--1);
	line-height: 1.6;
}

.card__link {
	margin-top: auto;
	display: inline-flex;
	align-items: center;
	gap: 0.4em;
	font-size: var(--step--1);
	font-weight: 550;
	color: var(--accent);
	text-decoration: none;
}

/* Whole-card click target without nesting interactive elements. */
.card__cover::after {
	content: '';
	position: absolute;
	inset: 0;
	border-radius: inherit;
}

/* ---------- Pills and tags ---------- */

.tag {
	display: inline-flex;
	align-items: center;
	padding: 0;
	border: 0;
	background: none;
	border-radius: 0;
	color: var(--text-faint);
	font-size: 0.7rem;
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	white-space: nowrap;
}

.tag--quiet {
	background: var(--surface);
	border-color: var(--line);
	color: var(--text-muted);
}

.badges {
	display: flex;
	flex-wrap: wrap;
	gap: 0.35rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.badge {
	display: inline-flex;
	align-items: center;
	padding: 0.32em 0.72em;
	border: 1px solid var(--accent-line);
	border-radius: var(--radius-pill);
	background: var(--accent-soft);
	color: var(--accent-ink);
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.01em;
	line-height: 1.2;
	white-space: nowrap;
}

/* ---------- Accordion ---------- */

.accordion {
	border-top: 1px solid var(--line);
}

.accordion__item {
	border-bottom: 1px solid var(--line);
}

.accordion__trigger {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: var(--space-m);
	width: 100%;
	padding: var(--space-m) 0;
	background: none;
	border: 0;
	text-align: left;
	font-size: var(--step-1);
	font-weight: 550;
	letter-spacing: -0.02em;
	color: var(--text);
	cursor: pointer;
}

.accordion__trigger .icon {
	flex-shrink: 0;
	margin-top: 0.3em;
	color: var(--accent);
	transition: transform var(--dur) var(--ease);
}

.accordion__trigger[aria-expanded='true'] .icon {
	transform: rotate(45deg);
}

.accordion__panel {
	display: grid;
	grid-template-rows: 0fr;
	transition: grid-template-rows var(--dur) var(--ease);
}

.accordion__panel[data-open='true'] {
	grid-template-rows: 1fr;
}

.accordion__panel > div {
	overflow: hidden;
}

.accordion__panel .prose {
	padding-bottom: var(--space-m);
	max-width: 70ch;
}

/* ---------- Footer ---------- */

.site-footer {
	background: var(--surface);
	border-top: 1px solid var(--line);
	padding-block: var(--space-2xl) var(--space-m);
	margin-top: var(--space-2xl);
}

/*
 * The closing CTA already has equal padding-block around the dark card.
 * Footer margin-top would stack under that padding and make the white
 * below the band larger than the white above it.
 */
main:has(.cta-band) + .site-footer {
	margin-top: 0;
}

.footer__grid {
	display: grid;
	gap: var(--space-xl);
	grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
	padding-bottom: var(--space-xl);
	border-bottom: 1px solid var(--line);
}

.footer__blurb {
	color: var(--text-muted);
	font-size: var(--step--1);
	max-width: 38ch;
	margin-top: var(--space-s);
}

.footer__title {
	font-size: var(--step--1);
	font-weight: 600;
	letter-spacing: 0.02em;
	margin-bottom: var(--space-s);
}

.footer__list {
	list-style: none;
	padding: 0;
	margin: 0;
	display: grid;
	gap: 0.55em;
	font-size: var(--step--1);
}

.footer__list a {
	color: var(--text-muted);
	text-decoration: none;
}

.footer__list a:hover {
	color: var(--text);
}

.footer__base {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-s) var(--space-m);
	justify-content: space-between;
	align-items: center;
	padding-top: var(--space-m);
	font-size: var(--step--1);
	color: var(--text-muted);
}

.footer__base a {
	color: inherit;
	text-decoration: none;
}

.footer__base a:hover {
	color: var(--text);
}

@media (max-width: 900px) {
	.site-footer {
		padding-block: var(--space-xl) var(--space-m);
		margin-top: var(--space-xl);
	}

	.footer__grid {
		grid-template-columns: minmax(0, 1fr);
		gap: var(--space-l);
		padding-bottom: var(--space-l);
	}
}

@media (max-width: 640px) {
	.site-footer {
		padding-block: var(--space-xl) var(--space-m);
		margin-top: var(--space-l);
	}

	.footer__grid {
		gap: var(--space-m);
	}
}

/* ---------- Forms ---------- */

.field {
	display: grid;
	gap: 0.5rem;
}

.field label {
	font-size: var(--step--1);
	font-weight: 550;
	color: var(--text);
}

.field input:not([type='radio']):not([type='checkbox']),
.field textarea,
.field select {
	width: 100%;
	padding: 0.85em 1em;
	background: var(--bg);
	border: 1px solid var(--line-strong);
	border-radius: 10px;
	color: var(--text);
	transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.field input:not([type='radio']):not([type='checkbox']):focus,
.field textarea:focus,
.field select:focus {
	outline: none;
	border-color: var(--accent);
	background: var(--bg);
	box-shadow: 0 0 0 4px var(--accent-soft);
}

.field input::placeholder,
.field textarea::placeholder {
	color: var(--text-faint);
}


.field__hint {
	font-size: 0.8rem;
	color: var(--text-muted);
}

.field__error {
	font-size: 0.8rem;
	color: var(--danger);
}

.form {
	margin-top: var(--space-l);
	display: grid;
	gap: var(--space-m);
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form--flow {
	margin-top: var(--space-s);
	grid-template-columns: minmax(0, 1fr);
	gap: var(--space-m);
}

.form--flow .flow__fields {
	display: grid;
	gap: var(--space-s);
	grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form--flow .flow__fields .field--wide {
	grid-column: 1 / -1;
}

.flow__progress[hidden] {
	display: none;
}

.form.is-flow .flow__progress {
	display: grid;
	gap: var(--space-2xs);
}

.flow__meta {
	font-size: var(--step--1);
	color: var(--text-faint);
	font-variant-numeric: tabular-nums;
}

.flow__bar {
	height: 3px;
	border-radius: 999px;
	background: var(--line);
	overflow: hidden;
}

.flow__bar span {
	display: block;
	height: 100%;
	width: 33.333%;
	background: var(--accent);
	border-radius: inherit;
	transition: width var(--dur) var(--ease);
}

.flow__stage {
	display: grid;
	align-items: start;
}

.flow__step {
	border: 0;
	padding: 0;
	margin: 0;
	min-width: 0;
	display: grid;
	gap: var(--space-s);
}

.form.is-flow .flow__stage > .flow__step {
	grid-area: 1 / 1;
}

.form.is-flow .flow__step.is-away {
	visibility: hidden;
	pointer-events: none;
}

.form.is-flow .flow__step[hidden] {
	display: none;
}

.flow__step legend {
	float: none;
	width: 100%;
	padding: 0;
	font-size: var(--step-2);
	font-weight: 700;
	letter-spacing: var(--track-tight);
	line-height: 1.15;
	text-wrap: balance;
}

.flow__step legend:focus {
	outline: none;
}

.flow__lead {
	margin: 0;
	color: var(--text-muted);
	max-width: 42ch;
}

.choices {
	display: grid;
	gap: var(--space-xs);
	grid-template-columns: repeat(6, minmax(0, 1fr));
}

.choices.is-invalid .choice {
	border-color: var(--danger-line);
}

.field__error[hidden] {
	display: none;
}

.choice {
	position: relative;
	display: flex;
	align-items: flex-start;
	gap: var(--space-s);
	grid-column: span 2;
	margin: 0;
	padding: 0.8em 1em;
	border: 1px solid var(--line);
	border-radius: var(--radius);
	background: var(--surface-2);
	cursor: pointer;
	transition:
		border-color var(--dur-fast) var(--ease),
		background var(--dur-fast) var(--ease),
		transform var(--dur-fast) var(--ease);
}

.choices .choice:nth-child(n + 4) {
	grid-column: span 3;
}

.choices--list {
	grid-template-columns: minmax(0, 1fr);
}

.choices--list .choice,
.choices--list .choice:nth-child(n + 4) {
	grid-column: auto;
}

.choice:hover {
	border-color: var(--accent-line);
	background: var(--accent-soft);
}

.choice:active {
	transform: scale(0.98);
}

.choice input {
	position: absolute;
	inset: 0;
	margin: 0;
	opacity: 0;
	cursor: pointer;
}

.choice:has(input:checked) {
	border-color: var(--accent);
	background: var(--accent-soft);
	box-shadow: 0 0 0 4px var(--accent-soft);
}

.choice:has(input:focus-visible) {
	outline: 2px solid var(--accent);
	outline-offset: 3px;
}

.choice__icon {
	display: grid;
	place-items: center;
	flex: 0 0 36px;
	width: 36px;
	height: 36px;
	border-radius: 10px;
	background: var(--surface);
	color: var(--accent);
}

.choice:has(input:checked) .choice__icon {
	background: var(--accent);
	color: #fff;
}

.choice__copy {
	display: grid;
	gap: 0.15em;
	padding-block: 0.15em;
}

.choice__name {
	font-weight: 600;
	letter-spacing: -0.02em;
}

.choice__hint {
	font-size: var(--step--1);
	color: var(--text-muted);
	font-weight: 400;
}

.flow__nav {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--space-xs);
}

.flow__nav .btn--primary {
	margin-inline-start: auto;
}

.form.is-flow .flow__nav [hidden] {
	display: none;
}

.flow__nav .btn--ghost {
	padding-inline: 1.1em;
}

.flow__nav .btn--ghost .icon {
	transition: transform var(--dur) var(--ease);
}

.flow__nav .btn--ghost:hover .icon {
	transform: translateX(-3px);
}

.flow__done h2 {
	font-size: var(--step-3);
}

.flow__done p {
	margin-top: var(--space-s);
	color: var(--text-muted);
	max-width: 46ch;
}

.flow__done-contact {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5em 0.85em;
	font-weight: 550;
}

.flow__done-contact a {
	text-decoration: none;
}

@media (max-width: 640px) {
	.form--flow .flow__fields,
	.choices {
		grid-template-columns: minmax(0, 1fr);
	}

	.choice,
	.choices .choice:nth-child(n + 4) {
		grid-column: auto;
	}

	.flow__step legend {
		font-size: var(--step-1);
	}
}

.field--wide,
.form__trap {
	grid-column: 1 / -1;
}

/* Honeypot: off-screen rather than display:none, which bots skip. */
.form__trap {
	position: absolute;
	left: -9999px;
	width: 1px;
	height: 1px;
	overflow: hidden;
}

.form__submit {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: var(--space-m);
	margin-top: var(--space-2xs);
}

.form__note {
	font-size: var(--step--1);
	color: var(--text-faint);
}

.notice {
	margin-top: var(--space-m);
	padding: var(--space-s) var(--space-m);
	border-radius: 10px;
	border: 1px solid;
	font-size: var(--step--1);
}

.notice--ok {
	color: var(--success-ink);
	background: var(--success-bg);
	border-color: var(--success-line);
}

.notice--error {
	color: var(--danger);
	background: var(--danger-bg);
	border-color: var(--danger-line);
}

@media (max-width: 640px) {
	.form {
		grid-template-columns: minmax(0, 1fr);
	}
}