/*
 * FitNutrition Calculators — front-end styles
 * All selectors are scoped under .fn-calc to avoid leaking into theme styles.
 */

.fn-calc {
	--fn-ivory: #faf7f0;
	--fn-ivory-dark: #f1ecdf;
	--fn-sage: #7c9473;
	--fn-sage-dark: #647a5c;
	--fn-sage-light: #e7ede4;
	--fn-honey: #d9a441;
	--fn-honey-dark: #b9832c;
	--fn-ink: #2f2b24;
	--fn-ink-soft: #5c574c;
	--fn-border: #e3ddcd;
	--fn-error: #b3452f;
	--fn-radius: 16px;
	--fn-radius-sm: 10px;
	--fn-font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
	--fn-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	--fn-font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

	box-sizing: border-box;
	max-width: 560px;
	margin: 2rem auto;
	padding: 1.75rem;
	background: var(--fn-ivory);
	border: 1px solid var(--fn-border);
	border-radius: var(--fn-radius);
	font-family: var(--fn-font-body);
	color: var(--fn-ink);
	line-height: 1.5;
}

.fn-calc *,
.fn-calc *::before,
.fn-calc *::after {
	box-sizing: inherit;
}

.fn-calc__title {
	font-family: var(--fn-font-display);
	font-weight: 600;
	font-size: 1.5rem;
	margin: 0 0 0.35rem;
	color: var(--fn-ink);
}

.fn-calc__intro {
	margin: 0 0 1.5rem;
	color: var(--fn-ink-soft);
	font-size: 0.95rem;
}

.fn-calc__form {
	display: flex;
	flex-direction: column;
	gap: 1.1rem;
}

.fn-calc__fieldset {
	border: 1px solid var(--fn-border);
	border-radius: var(--fn-radius-sm);
	padding: 1rem 1.1rem 1.2rem;
	margin: 0;
}

.fn-calc__legend {
	font-family: var(--fn-font-display);
	font-weight: 600;
	font-size: 0.95rem;
	padding: 0 0.4rem;
	color: var(--fn-sage-dark);
}

.fn-calc__row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0.9rem;
	margin-top: 0.9rem;
}

.fn-calc__row:first-of-type {
	margin-top: 0;
}

.fn-calc__field {
	display: flex;
	flex-direction: column;
	gap: 0.35rem;
}

.fn-calc__field--full {
	grid-column: 1 / -1;
}

.fn-calc__label {
	font-size: 0.85rem;
	font-weight: 600;
	color: var(--fn-ink);
}

.fn-calc__hint {
	font-size: 0.78rem;
	color: var(--fn-ink-soft);
}

.fn-calc__input,
.fn-calc__select {
	width: 100%;
	padding: 0.6rem 0.7rem;
	font-family: var(--fn-font-body);
	font-size: 0.95rem;
	color: var(--fn-ink);
	background: #fff;
	border: 1px solid var(--fn-border);
	border-radius: var(--fn-radius-sm);
	transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.fn-calc__input:focus,
.fn-calc__select:focus {
	outline: none;
	border-color: var(--fn-sage);
	box-shadow: 0 0 0 3px var(--fn-sage-light);
}

.fn-calc__input[aria-invalid="true"],
.fn-calc__select[aria-invalid="true"] {
	border-color: var(--fn-error);
}

.fn-calc__radio-group {
	display: flex;
	flex-wrap: wrap;
	gap: 0.7rem;
}

.fn-calc__radio-option {
	display: flex;
	align-items: center;
	gap: 0.45rem;
	font-size: 0.88rem;
	font-weight: 500;
	color: var(--fn-ink-soft);
	background: #fff;
	border: 1.5px solid var(--fn-border);
	border-radius: 999px;
	padding: 0.45rem 0.9rem;
	cursor: pointer;
	transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.fn-calc__radio-option input[type="radio"] {
	accent-color: var(--fn-sage);
	width: 1.05rem;
	height: 1.05rem;
	flex-shrink: 0;
}

/* Active unit option is visually highlighted; inactive stays secondary. */
.fn-calc__radio-option.is-active {
	border-color: var(--fn-sage);
	background: var(--fn-sage-light);
	color: var(--fn-sage-dark);
	font-weight: 700;
}

/*
 * Unit-specific measurement rows.
 * Only the active unit system's fields are shown; the inactive group is
 * fully removed from layout (display: none) so it never occupies space,
 * is never focusable, and never participates in validation.
 */
.fn-calc__row[data-unit-group] {
	display: none;
}

.fn-calc__row[data-unit-group].is-active {
	display: grid;
}

.fn-calc__error {
	font-size: 0.78rem;
	color: var(--fn-error);
	min-height: 1em;
}

.fn-calc__submit {
	align-self: flex-start;
	background: var(--fn-sage);
	color: #fff;
	border: none;
	border-radius: 999px;
	padding: 0.75rem 1.75rem;
	font-family: var(--fn-font-body);
	font-weight: 600;
	font-size: 0.95rem;
	cursor: pointer;
	transition: background-color 0.15s ease, transform 0.1s ease;
}

.fn-calc__submit:hover,
.fn-calc__submit:focus-visible {
	background: var(--fn-sage-dark);
}

.fn-calc__submit:active {
	transform: translateY(1px);
}

/* Clear disabled state: Calculate is unavailable until every visible
   required field is valid. */
.fn-calc__submit:disabled {
	background: var(--fn-border);
	color: var(--fn-ink-soft);
	cursor: not-allowed;
	transform: none;
}

.fn-calc__submit:disabled:hover,
.fn-calc__submit:disabled:focus-visible {
	background: var(--fn-border);
}

.fn-calc__reset {
	background: none;
	border: none;
	color: var(--fn-ink-soft);
	font-size: 0.85rem;
	text-decoration: underline;
	cursor: pointer;
	padding: 0.5rem 0;
	align-self: flex-start;
}

.fn-calc__form-error {
	display: none;
	background: #fbeceb;
	border: 1px solid var(--fn-error);
	color: var(--fn-error);
	border-radius: var(--fn-radius-sm);
	padding: 0.7rem 0.9rem;
	font-size: 0.85rem;
}

.fn-calc__form-error.is-visible {
	display: block;
}

.fn-calc__results {
	display: none;
	margin-top: 1.6rem;
	padding: 1.3rem 1.4rem;
	background: var(--fn-sage-light);
	border: 1px solid var(--fn-border);
	border-radius: var(--fn-radius-sm);
}

.fn-calc__results.is-visible {
	display: block;
}

.fn-calc__results-title {
	font-family: var(--fn-font-display);
	font-size: 1.1rem;
	margin: 0 0 0.9rem;
	color: var(--fn-ink);
}

.fn-calc__result-list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0.7rem 1rem;
}

.fn-calc__result-item {
	display: flex;
	flex-direction: column;
	gap: 0.15rem;
	background: #fff;
	border: 1px solid var(--fn-border);
	border-radius: var(--fn-radius-sm);
	padding: 0.6rem 0.8rem;
}

.fn-calc__result-item--wide {
	grid-column: 1 / -1;
}

.fn-calc__result-label {
	font-size: 0.75rem;
	color: var(--fn-ink-soft);
	text-transform: uppercase;
	letter-spacing: 0.03em;
}

.fn-calc__result-value {
	font-family: var(--fn-font-mono);
	font-size: 1.15rem;
	font-weight: 600;
	color: var(--fn-sage-dark);
}

.fn-calc__result-value--accent {
	color: var(--fn-honey-dark);
}

.fn-calc__badge {
	display: inline-block;
	margin-top: 0.2rem;
	padding: 0.15rem 0.6rem;
	border-radius: 999px;
	background: var(--fn-honey);
	color: #fff;
	font-size: 0.72rem;
	font-weight: 600;
	width: fit-content;
}

/*
 * Safety warning shown inside the results panel (e.g. very low/high calorie
 * targets). Text carries the meaning on its own — color is a supporting
 * cue only, never the sole signal.
 */
.fn-calc__warning {
	display: none;
	margin-top: 1rem;
	padding: 0.7rem 0.9rem;
	background: #fdf3e0;
	border: 1px solid var(--fn-honey);
	border-radius: var(--fn-radius-sm);
	color: #7a5518;
	font-size: 0.85rem;
	font-weight: 600;
	line-height: 1.4;
}

.fn-calc__warning.is-visible {
	display: block;
}

.fn-calc__disclaimer {
	margin: 1rem 0 0;
	font-size: 0.78rem;
	color: var(--fn-ink-soft);
	border-top: 1px dashed var(--fn-border);
	padding-top: 0.8rem;
}

/* When a calculator shows more than one disclaimer line (e.g. BMI's general
   + BMI-specific note), avoid a double separator between them. */
.fn-calc__disclaimer + .fn-calc__disclaimer {
	margin-top: 0.5rem;
	border-top: none;
	padding-top: 0;
}

.fn-calc__visually-hidden {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

@media (max-width: 480px) {
	.fn-calc {
		padding: 1.25rem;
		margin: 1.25rem auto;
	}

	.fn-calc__row,
	.fn-calc__result-list {
		grid-template-columns: 1fr;
	}

	.fn-calc__submit {
		width: 100%;
		text-align: center;
	}
}

/* ---------------------------------------------------------------------
 * Calculator single page (inc/content-render.php,
 * templates/cpt/single-calculators.php).
 * ------------------------------------------------------------------- */

.fn-calc-single {
	max-width: 720px;
	margin: 0 auto;
	font-family: var(--fn-font-body, inherit);
	color: var(--fn-ink, inherit);
}

.fn-calc-single *,
.fn-calc-single *::before,
.fn-calc-single *::after {
	box-sizing: border-box;
}

/* Safety note — shared visual language with the archive page's version,
   but without a fixed narrow width, since it sits inside a page column
   here rather than a centered hero. */
.fn-calc-safety-note {
	background: #fdf3e0;
	border: 1px solid var(--fn-honey, #d9a441);
	border-radius: 10px;
	padding: 0.85rem 1.1rem;
	font-size: 0.9rem;
	line-height: 1.5;
	margin: 0 0 1.5rem;
}

.fn-calc-safety-note p {
	margin: 0;
}

.fn-calc-intro {
	line-height: 1.6;
	margin-bottom: 1.75rem;
}

/*
 * Editor-controlled main content, split into distinct sections by
 * fn_calc_wrap_content_sections(). Real typography still mostly comes
 * from the active theme; these rules give it clear visual rhythm even
 * when the theme has no particular opinion on generic content.
 */
.fn-calc-content {
	margin-bottom: 2rem;
}

.fn-calc-section {
	margin-bottom: 2rem;
	padding-bottom: 2rem;
	border-bottom: 1px solid var(--fn-border, #e3ddcd);
}

.fn-calc-section:last-child {
	margin-bottom: 0;
	padding-bottom: 0;
	border-bottom: none;
}

.fn-calc-section :first-child {
	margin-top: 0;
}

.fn-calc-section h2,
.fn-calc-section h3,
.fn-calc-section h4 {
	font-family: var(--fn-font-display, inherit);
	margin: 0 0 0.9rem;
}

.fn-calc-section p,
.fn-calc-section ul,
.fn-calc-section ol {
	margin: 0 0 1rem;
	line-height: 1.6;
}

.fn-calc-section ul,
.fn-calc-section ol {
	padding-left: 1.4rem;
}

/* "Important limitations" gets an info/caution card treatment instead of
   plain paragraphs. */
.fn-calc-limitations {
	border-bottom: none;
}

.fn-calc-info-card {
	background: #fdf3e0;
	border: 1px solid var(--fn-honey, #d9a441);
	border-radius: 12px;
	padding: 1.25rem 1.5rem;
}

.fn-calc-info-card h2,
.fn-calc-info-card h3 {
	color: #7a5518;
}

/* FAQ — lightweight, no-JS accordion using native <details>/<summary>. */
.fn-calc-faq-item {
	border: 1px solid var(--fn-border, #e3ddcd);
	border-radius: 10px;
	padding: 0.9rem 1.1rem;
	margin-bottom: 0.75rem;
	background: #fff;
}

.fn-calc-faq-item:last-of-type {
	margin-bottom: 0;
}

.fn-calc-faq-question {
	font-family: var(--fn-font-display, inherit);
	font-weight: 600;
	cursor: pointer;
	list-style: none;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 0.75rem;
}

.fn-calc-faq-question::-webkit-details-marker {
	display: none;
}

.fn-calc-faq-question::after {
	content: '+';
	font-size: 1.2rem;
	line-height: 1;
	color: var(--fn-sage, #7c9473);
	flex-shrink: 0;
	transition: transform 0.15s ease;
}

.fn-calc-faq-item[open] .fn-calc-faq-question::after {
	transform: rotate(45deg);
}

.fn-calc-faq-answer {
	margin-top: 0.75rem;
	line-height: 1.6;
	color: var(--fn-ink-soft, #5c574c);
}

.fn-calc-faq-answer p {
	margin: 0 0 0.75rem;
}

.fn-calc-faq-answer p:last-child {
	margin-bottom: 0;
}

.fn-calc-section-title {
	font-family: var(--fn-font-display, inherit);
	margin: 0 0 1.25rem;
}

/* "Other calculators" cross-link cards. */
.fn-calc-related {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 1rem;
	margin-bottom: 2rem;
}

.fn-calc-related-card {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 0.35rem;
	padding: 1.1rem 1.2rem;
	background: #fff;
	border: 1px solid var(--fn-border, #e3ddcd);
	border-radius: 12px;
	text-decoration: none;
	color: inherit;
	min-width: 0;
	transition: border-color 0.15s ease, transform 0.1s ease;
}

.fn-calc-related-card:hover,
.fn-calc-related-card:focus-visible {
	border-color: var(--fn-sage, #7c9473);
	transform: translateY(-1px);
}

.fn-calc-related-card-label {
	display: inline-block;
	width: fit-content;
	padding: 0.1rem 0.55rem;
	border-radius: 999px;
	background: var(--fn-sage-light, #e7ede4);
	color: var(--fn-sage-dark, #647a5c);
	font-size: 0.7rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.02em;
}

.fn-calc-related-card-title {
	font-family: var(--fn-font-display, inherit);
	font-weight: 600;
	color: var(--fn-sage-dark, #647a5c);
}

.fn-calc-related-card-excerpt {
	font-size: 0.85rem;
	color: var(--fn-ink-soft, #5c574c);
	line-height: 1.5;
}

.fn-calc-related-card-button {
	display: inline-block;
	margin-top: auto;
	padding-top: 0.6rem;
	font-size: 0.8rem;
	font-weight: 600;
	color: var(--fn-honey-dark, #b9832c);
}

.fn-calc-disclaimer {
	margin-top: 2rem;
	padding-top: 1rem;
	border-top: 1px dashed var(--fn-border, #e3ddcd);
	font-size: 0.8rem;
	color: var(--fn-ink-soft, #5c574c);
}

@media (max-width: 480px) {
	.fn-calc-info-card {
		padding: 1rem 1.1rem;
	}
}

/* ---------------------------------------------------------------------
 * Fallback single/archive template wrappers (templates/cpt/*.php).
 * Only used when the active theme has no single-calculators.php /
 * archive-calculators.php of its own.
 * ------------------------------------------------------------------- */

.fn-calc-single-wrap {
	max-width: 760px;
	margin: 0 auto;
	padding: 2rem 1.25rem;
}

.fn-calc-single-title {
	font-family: var(--fn-font-display, inherit);
	font-size: 2rem;
	margin: 0 0 1.5rem;
	color: var(--fn-ink, inherit);
}

/*
 * Calculators archive page (/calculators/). Scoped entirely under
 * .fn-calc-archive so nothing here leaks into the theme's own global
 * heading/link styles.
 */
.fn-calc-archive {
	max-width: 1000px;
	margin: 0 auto;
	padding: 2rem 1.25rem;
	box-sizing: border-box;
}

.fn-calc-archive *,
.fn-calc-archive *::before,
.fn-calc-archive *::after {
	box-sizing: inherit;
}

.fn-calc-hero {
	text-align: center;
	max-width: 640px;
	margin: 0 auto 1.5rem;
}

.fn-calc-hero__title {
	font-family: var(--fn-font-display, inherit);
	font-size: 2.1rem;
	margin: 0 0 0.75rem;
	color: var(--fn-ink, inherit);
}

.fn-calc-hero__intro {
	font-size: 1rem;
	line-height: 1.6;
	color: var(--fn-ink-soft, #5c574c);
	margin: 0;
}

/* Archive-specific: narrower, centered treatment on top of the shared
   .fn-calc-safety-note base style defined earlier in this file. */
.fn-calc-archive .fn-calc-safety-note {
	max-width: 640px;
	margin: 0 auto 2rem;
	text-align: center;
}

.fn-calc-grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	align-items: stretch;
	gap: 1.25rem;
	margin-bottom: 2.5rem;
}

.fn-calc-card {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	height: 100%;
	gap: 0.5rem;
	padding: 1.5rem;
	background: var(--fn-ivory, #faf7f0);
	border: 1px solid var(--fn-border, #e3ddcd);
	border-radius: 16px;
	text-decoration: none;
	color: inherit;
	min-width: 0;
	transition: border-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
}

.fn-calc-card:hover,
.fn-calc-card:focus-visible {
	border-color: var(--fn-sage, #7c9473);
	transform: translateY(-2px);
	box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
}

.fn-calc-card-label {
	display: inline-block;
	width: fit-content;
	padding: 0.15rem 0.6rem;
	border-radius: 999px;
	background: var(--fn-honey, #d9a441);
	color: #fff;
	font-size: 0.7rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.02em;
}

.fn-calc-card-title {
	font-family: var(--fn-font-display, inherit);
	font-size: 1.25rem;
	margin: 0;
	color: var(--fn-sage-dark, #647a5c);
}

.fn-calc-card-excerpt {
	font-size: 0.9rem;
	color: var(--fn-ink-soft, #5c574c);
	line-height: 1.55;
	margin: 0;
}

.fn-calc-card-button {
	display: inline-block;
	margin-top: auto;
	padding: 0.55rem 1.2rem;
	border-radius: 999px;
	background: var(--fn-sage, #7c9473);
	color: #fff;
	font-size: 0.85rem;
	font-weight: 600;
	line-height: 1;
}

.fn-calc-card:hover .fn-calc-card-button,
.fn-calc-card:focus-visible .fn-calc-card-button {
	background: var(--fn-sage-dark, #647a5c);
}

.fn-calc-guide-section {
	max-width: 720px;
	margin: 0 auto 2rem;
}

.fn-calc-guide-section__title {
	font-family: var(--fn-font-display, inherit);
	font-size: 1.4rem;
	text-align: center;
	margin: 0 0 1.25rem;
}

.fn-calc-guide-section__rows {
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
}

.fn-calc-guide-section__row {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: 0.4rem;
	padding: 0.85rem 1.1rem;
	background: #fff;
	border: 1px solid var(--fn-border, #e3ddcd);
	border-radius: 10px;
}

.fn-calc-guide-section__row strong {
	font-family: var(--fn-font-display, inherit);
	color: var(--fn-sage-dark, #647a5c);
	flex-shrink: 0;
}

.fn-calc-guide-section__row span {
	color: var(--fn-ink-soft, #5c574c);
	font-size: 0.9rem;
}

.fn-calc-archive__disclaimer {
	max-width: 640px;
	margin: 0 auto;
	padding-top: 1.5rem;
	border-top: 1px dashed var(--fn-border, #e3ddcd);
	text-align: center;
	font-size: 0.8rem;
	color: var(--fn-ink-soft, #5c574c);
}

@media (max-width: 700px) {
	.fn-calc-grid {
		grid-template-columns: 1fr;
	}
}