/*
 * The Formula page (/howto/): the hero band (template-parts/formula/hero.php),
 * the ingredient cards and gate (page-howto.php), and the "Try the formula"
 * sidebar card (sidebar.php). Loaded on that page only.
 *
 * Colours come from the theme's --brand-* tokens so the page follows the dark
 * mode toggle. Each essential ingredient has its own colour, used on the
 * equation chip, the sentence underline and the card badge alike, so the three
 * read as one key. The teal for "goal" and the two tints have no theme token
 * yet; they are defined here, with dark values, under the same two triggers
 * style.css uses.
 */

:root {
	--formula-character: var(--brand-accent);
	--formula-character-tint: #e8f0f5;
	--formula-event: var(--brand-accent-2);
	--formula-event-tint: #fbe9f1;
	--formula-goal: #0f766e;
	--formula-goal-tint: #e3f2f0;
	--formula-dim: #9aa7b4;
	--formula-dash: #c9d0d7;
}

@media (prefers-color-scheme: dark) {
	:root:not([data-theme="light"]) {
		--formula-character-tint: #1f3445;
		--formula-event-tint: #3a1a2a;
		--formula-goal: #4fc4b6;
		--formula-goal-tint: #12302d;
		--formula-dim: #5d6b78;
		--formula-dash: #3a4855;
	}
}

:root[data-theme="dark"] {
	--formula-character-tint: #1f3445;
	--formula-event-tint: #3a1a2a;
	--formula-goal: #4fc4b6;
	--formula-goal-tint: #12302d;
	--formula-dim: #5d6b78;
	--formula-dash: #3a4855;
}

/* Zero-specificity, so each component below sets its own spacing. */
:where(.formula-hero, .formula-page, .widget-try-formula) p {
	margin: 0;
}

/* Site-wide heading CSS pasted in via Head Code (a dot before every h3, a rule
   above every h2) would fight the cards' own headings; switch it off here. */
.formula-hero h1,
.formula-page h2,
.formula-page h3,
.widget-try-formula h2 {
	border-top: 0;
	padding-top: 0;
}

.formula-page h3::before {
	content: none;
}

/* Hero ------------------------------------------------------------------ */
.formula-hero {
	background: var(--brand-card);
	border-bottom: 1px solid var(--brand-border);
}

.formula-hero-inner {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 40px 48px;
	padding-top: 56px;
	padding-bottom: 52px;
}

.formula-hero-text {
	flex: 1 1 320px;
	min-width: 0;
}

.formula-eyebrow,
.formula-label {
	font-weight: 700;
	letter-spacing: 0.09em;
	text-transform: uppercase;
	line-height: 1.4;
}

.formula-eyebrow {
	font-size: 0.78rem;
	color: var(--brand-accent-2);
	margin-bottom: 12px;
}

.formula-title {
	font-size: clamp(2rem, 5vw, 2.6rem);
	font-weight: 800;
	line-height: 1.1;
	letter-spacing: -0.02em;
	margin: 0 0 16px;
	text-wrap: balance;
}

.formula-lede {
	font-size: 1.2rem;
	line-height: 1.55;
	color: var(--brand-muted);
	max-width: 46ch;
	text-wrap: pretty;
}

.formula-equation {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 6px;
	margin-top: 20px;
	font-size: 0.9rem;
	font-weight: 700;
	line-height: 1.4;
	white-space: nowrap;
}

.formula-chip {
	padding: 7px 12px;
	border: 0;
	border-radius: 999px;
	font: inherit;
	line-height: inherit;
}

.formula-chip--character { --part: var(--formula-character); --part-tint: var(--formula-character-tint); }
.formula-chip--event     { --part: var(--formula-event); --part-tint: var(--formula-event-tint); }
.formula-chip--goal      { --part: var(--formula-goal); --part-tint: var(--formula-goal-tint); }

/* The three ingredient chips are the controls for the sentence above them. */
button.formula-chip {
	background: var(--part-tint);
	color: var(--part);
	box-shadow: inset 0 0 0 1px transparent;
	cursor: pointer;
	transition: background-color 0.2s, color 0.2s, box-shadow 0.2s;
}

button.formula-chip:hover,
button.formula-chip:focus-visible {
	box-shadow: inset 0 0 0 1px var(--part);
}

/* The chip whose ingredient is lit fills solid, so the link between chip and
   sentence is unmistakable. */
.formula-anatomy[data-active="character"] .formula-chip--character,
.formula-anatomy[data-active="event"] .formula-chip--event,
.formula-anatomy[data-active="goal"] .formula-chip--goal {
	background: var(--part);
	color: var(--brand-card);
}

.formula-chip--result {
	background: var(--brand-text);
	color: var(--brand-card);
}

.formula-op {
	color: var(--brand-muted);
	font-weight: 400;
}

/* "= Logline" never splits across a line break. */
.formula-equals {
	display: flex;
	align-items: center;
	gap: 8px;
}

.formula-anatomy {
	/* Wider than the text column: it carries the sentence and its key. */
	flex: 1.4 1 440px;
	min-width: 0;
	margin: 0;
	padding: 28px;
	background: var(--brand-surface);
	border: 1px solid var(--brand-border);
	border-radius: 18px;
}

.formula-label {
	font-size: 0.72rem;
	color: var(--brand-muted);
	margin-bottom: 14px;
}

.formula-sentence {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: clamp(1.15rem, 3vw, 1.4rem);
	font-style: normal;
	font-weight: 800;
	line-height: 1.5;
	color: var(--brand-text);
	text-wrap: pretty;
	transition: color 0.2s;
}

.formula-part {
	border-radius: 4px;
	/* The padding gives the lit tint a little room; the matching negative
	   margin keeps it from opening a gap before the commas. */
	padding: 0 2px;
	margin: 0 -2px;
	-webkit-box-decoration-break: clone;
	box-decoration-break: clone;
	transition: color 0.2s, background-color 0.2s, box-shadow 0.2s;
}

.formula-part--character { --part: var(--formula-character); --part-tint: var(--formula-character-tint); }
.formula-part--event     { --part: var(--formula-event); --part-tint: var(--formula-event-tint); }
.formula-part--goal      { --part: var(--formula-goal); --part-tint: var(--formula-goal-tint); }

/* At rest the sentence is plain text: colour arrives only for the ingredient
   being pointed at, from either side (the phrase itself or its chip below).
   A faint dotted underline is the only hint that a phrase does something. */
.formula-part {
	text-decoration: underline dotted color-mix(in srgb, var(--brand-muted) 55%, transparent);
	text-decoration-thickness: 2px;
	text-underline-offset: 6px;
	cursor: default;
}

/* One ingredient chosen: the connecting words and the other two dim. */
.formula-anatomy[data-active] .formula-sentence {
	color: var(--formula-dim);
}

.formula-anatomy[data-active] .formula-part {
	color: var(--formula-dim);
	text-decoration-color: transparent;
}

.formula-anatomy[data-active="character"] .formula-part--character,
.formula-anatomy[data-active="event"] .formula-part--event,
.formula-anatomy[data-active="goal"] .formula-part--goal {
	color: var(--part);
	background: var(--part-tint);
	box-shadow: inset 0 -3px 0 var(--part);
}

.formula-anatomy-caption {
	margin-top: 14px;
	font-size: 0.875rem;
	color: var(--brand-muted);
}

/* "Hover…" means nothing on a touch screen. */
.formula-caption-touch {
	display: none;
}

@media (hover: none) {
	.formula-caption-hover { display: none; }
	.formula-caption-touch { display: inline; }
}

/* Phones: tighter hero, so the sentence and its key arrive on the first
   screen rather than below the fold. */
@media (max-width: 600px) {
	.formula-hero-inner {
		gap: 16px;
		padding-top: 20px;
		padding-bottom: 24px;
	}

	/* The nav already marks "The formula" as the current page. */
	.formula-eyebrow {
		display: none;
	}

	/* Title, then the sentence box, then the lede: the box is the thing to
	   play with, so it comes straight under the title on a small screen. */
	.formula-hero-text {
		display: contents;
	}

	.formula-title {
		margin: 0;
	}

	.formula-anatomy {
		order: 1;
	}

	.formula-lede {
		order: 2;
		font-size: 1rem;
	}

	.formula-anatomy {
		padding: 16px 18px;
		border-radius: 14px;
	}

	.formula-label {
		margin-bottom: 8px;
	}

	.formula-sentence {
		font-size: 1.1rem;
	}

	.formula-equation {
		margin-top: 16px;
		gap: 6px;
	}

	.formula-chip {
		padding: 6px 12px;
	}
}

/* Sections -------------------------------------------------------------- */
.formula-page {
	padding-top: 1rem;
}

.formula-section-head {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: 12px;
	margin-bottom: 6px;
}

.formula-section-head--optional {
	margin-top: 56px;
}

.formula-h2 {
	font-size: 1.6rem;
	font-weight: 800;
	letter-spacing: -0.01em;
	margin: 0;
}

.formula-tag {
	padding: 2px 10px;
	border-radius: 999px;
	font-size: 0.75rem;
	font-weight: 700;
	line-height: 1.5;
}

.formula-tag--required {
	background: var(--brand-text);
	color: var(--brand-card);
}

.formula-tag--optional {
	border: 1px dashed var(--brand-muted);
	color: var(--brand-muted);
}

.formula-intro {
	font-size: 1.0625rem;
	line-height: 1.65;
	color: var(--brand-muted);
	max-width: 58ch;
	margin-bottom: 22px !important;
	text-wrap: pretty;
}

/* Essential ingredient cards -------------------------------------------- */
.formula-stack {
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.formula-card {
	display: grid;
	grid-template-columns: 44px minmax(0, 1fr);
	gap: 16px;
	padding: 22px;
	background: var(--brand-card);
	border: 1px solid var(--brand-border);
	border-radius: 14px;
}

.formula-card[data-ingredient="character"] { --part: var(--formula-character); --part-tint: var(--formula-character-tint); }
.formula-card[data-ingredient="event"]     { --part: var(--formula-event); --part-tint: var(--formula-event-tint); }
.formula-card[data-ingredient="goal"]      { --part: var(--formula-goal); --part-tint: var(--formula-goal-tint); }

.formula-num {
	width: 44px;
	height: 44px;
	border-radius: 11px;
	display: grid;
	place-items: center;
	background: var(--part-tint);
	color: var(--part);
	font-size: 1.1rem;
	font-weight: 800;
}

.formula-card-title {
	font-size: 1.2rem;
	font-weight: 700;
	margin: 6px 0;
}

.formula-card-body p {
	font-size: 1.0625rem;
	line-height: 1.65;
	text-wrap: pretty;
}

.formula-examples {
	list-style: none;
	margin: 12px 0 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.formula-examples li {
	padding: 4px 12px;
	border: 1px solid var(--brand-border);
	border-radius: 999px;
	background: var(--brand-card);
	font-size: 0.9rem;
	font-style: italic;
	line-height: 1.4;
}

/* Optional ingredients -------------------------------------------------- */
.formula-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
	gap: 14px;
}

.formula-optional {
	padding: 20px 22px;
	background: var(--brand-card);
	border: 1px dashed var(--formula-dash);
	border-radius: 14px;
}

.formula-optional-title {
	font-size: 1.05rem;
	font-weight: 700;
	margin: 0 0 8px;
}

.formula-optional p {
	font-size: 1rem;
	line-height: 1.6;
	text-wrap: pretty;
}

/* The rest of the guide (members) --------------------------------------- */
.formula-rest {
	margin-top: 56px;
}

/* Gate (logged out) ----------------------------------------------------- */
.formula-locked {
	margin-top: 56px;
}

.formula-peek {
	filter: blur(3px);
	opacity: 0.5;
	pointer-events: none;
	user-select: none;
}

.formula-peek h2 {
	font-size: 1.6rem;
	font-weight: 800;
	margin: 0 0 10px;
}

.formula-peek p {
	font-size: 1.0625rem;
	line-height: 1.65;
}

/* The site's standard gate, laid out as the design's card: copy on the left,
   the buttons on the right, lifted over the blurred text. */
.formula-locked .loglineit-gate {
	margin: -40px 0 0;
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	grid-template-areas:
		"title cta"
		"body  login";
	align-items: center;
	gap: 6px 24px;
	padding: 28px;
	border-radius: 18px;
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
	text-align: left;
}

.formula-locked .loglineit-gate::before {
	content: none;
}

.formula-locked .loglineit-gate-title {
	grid-area: title;
	align-self: end;
	margin: 0;
	font-size: 1.3rem;
	font-weight: 800;
}

.formula-locked .loglineit-gate-body {
	grid-area: body;
	align-self: start;
	margin: 0;
	max-width: none;
	font-size: 1rem;
	line-height: 1.6;
}

.formula-locked .loglineit-gate-cta {
	grid-area: cta;
	align-self: end;
	justify-self: start;
	padding: 11px 22px;
	border-radius: 9px;
	background: var(--brand-accent);
	color: var(--brand-accent-contrast);
	font-size: 1rem;
	font-weight: 600;
	box-shadow: none;
	white-space: nowrap;
}

.formula-locked .loglineit-gate-cta:hover,
.formula-locked .loglineit-gate-cta:focus-visible {
	background: var(--brand-accent-hover);
	transform: none;
}

.formula-locked .loglineit-gate-login {
	grid-area: login;
	align-self: start;
	margin: 0;
	font-size: 0.875rem;
}

@media (max-width: 560px) {
	.formula-locked .loglineit-gate {
		grid-template-columns: minmax(0, 1fr);
		grid-template-areas: "title" "body" "cta" "login";
		gap: 8px;
	}

	.formula-locked .loglineit-gate-cta {
		margin-top: 10px;
	}
}

.formula-page .ll-share {
	margin-top: 36px;
}

/* "Try the formula" sidebar card --------------------------------------- */
.widget-try-formula {
	background: #16202b;
	color: #e8edf2;
	border-color: #16202b;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

/* On the dark theme the card colour is this colour already; a border keeps
   the card from melting into its neighbours. */
@media (prefers-color-scheme: dark) {
	:root:not([data-theme="light"]) .widget-try-formula {
		border-color: var(--brand-border);
	}
}

:root[data-theme="dark"] .widget-try-formula {
	border-color: var(--brand-border);
}

.widget-try-formula-label {
	margin: 0 0 2px;
	font-size: 0.72rem;
	font-weight: 700;
	letter-spacing: 0.09em;
	text-transform: uppercase;
	color: #9aa7b4;
}

.widget-try-formula-lead {
	font-size: 1.05rem;
	font-weight: 700;
	line-height: 1.45;
	margin-bottom: 8px !important;
}

.widget-try-formula-btn {
	display: block;
	padding: 10px 14px;
	border: 1px solid #2a3746;
	border-radius: 9px;
	color: #e8edf2;
	font-weight: 700;
	text-decoration: none;
	line-height: 1.4;
}

.widget-try-formula-btn:hover,
.widget-try-formula-btn:focus-visible {
	border-color: #68a6c6;
	color: #ffffff;
}

.widget-try-formula-btn--primary {
	background: #68a6c6;
	border-color: #68a6c6;
	color: #08131c;
}

.widget-try-formula-btn--primary:hover,
.widget-try-formula-btn--primary:focus-visible {
	background: #8cc0da;
	border-color: #8cc0da;
	color: #08131c;
}