/**
 * =========================================================
 * FELIX SYSTEMS — APPEARANCE & POLISH
 * Version 0.6.0
 * =========================================================
 * Default presentation remains the signature dark Felix UI.
 * The light theme is a full, accessible presentation mode,
 * not a simple color inversion.
 */

:root {
	color-scheme: dark;
	--fc-focus-ring: rgba(181, 226, 0, 0.34);
	--fc-shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.16);
	--fc-shadow-card: 0 14px 34px rgba(0, 0, 0, 0.10);
}

html[data-theme="light"] {
	color-scheme: light;
	--fc-text-muted: #5f685d;
	--fc-border: rgba(75, 93, 20, 0.20);
	--fc-border-light: rgba(16, 24, 15, 0.12);
	--fc-shadow-soft: 0 18px 50px rgba(29, 42, 20, 0.09);
	--fc-shadow-card: 0 12px 30px rgba(29, 42, 20, 0.08);
}

/* Fixed-header anchor comfort. */
.fc-home section[id],
.fc-main [id] {
	scroll-margin-top: 104px;
}

/* ---------------------------------------------------------
 * Appearance switch
 * --------------------------------------------------------- */
.fc-header__actions {
	display: flex;
	align-items: center;
	justify-content: flex-end;
	gap: 0.7rem;
}

.fc-theme-toggle {
	display: inline-flex;
	min-width: 44px;
	height: 42px;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	border: 1px solid var(--fc-border);
	border-radius: 9px;
	background: rgba(247, 244, 236, 0.035);
	color: var(--fc-cream);
	padding: 0 0.78rem;
	cursor: pointer;
	transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}
.fc-theme-toggle:hover {
	transform: translateY(-1px);
	border-color: rgba(181, 226, 0, 0.48);
	background: rgba(181, 226, 0, 0.08);
	color: var(--fc-green);
}
.fc-theme-toggle__icon {
	position: relative;
	display: block;
	width: 16px;
	height: 16px;
	border: 1.5px solid currentColor;
	border-radius: 50%;
}
.fc-theme-toggle__icon::after {
	position: absolute;
	top: -3px;
	right: -3px;
	width: 9px;
	height: 9px;
	border-radius: 50%;
	background: currentColor;
	content: "";
	transition: transform 160ms ease, opacity 160ms ease;
}
.fc-theme-toggle__label {
	font-size: 0.72rem;
	font-weight: 800;
	letter-spacing: 0.06em;
	text-transform: uppercase;
}
html[data-theme="light"] .fc-theme-toggle__icon::after {
	transform: translate(-5px, 5px) scale(0.45);
	opacity: 0;
}

/* ---------------------------------------------------------
 * Light presentation — global shell
 * --------------------------------------------------------- */
html[data-theme="light"] body {
	background: #e9eee4;
	color: #111610;
}
html[data-theme="light"] .fc-header,
html[data-theme="light"] .fc-main,
html[data-theme="light"] .fc-footer {
	border-color: rgba(84, 104, 31, 0.10);
	box-shadow: 0 0 70px rgba(40, 55, 24, 0.07);
}
html[data-theme="light"] .fc-header {
	background: rgba(250, 252, 247, 0.93);
	border-bottom-color: rgba(84, 104, 31, 0.16);
}
html[data-theme="light"] .fc-brand,
html[data-theme="light"] .fc-brand__name,
html[data-theme="light"] .fc-nav a,
html[data-theme="light"] .fc-nav-toggle,
html[data-theme="light"] .fc-theme-toggle {
	color: #111610;
}
html[data-theme="light"] .fc-brand__tagline { color: #667063; }
html[data-theme="light"] .fc-brand__mark {
	background: rgba(181, 226, 0, 0.13);
	border-color: rgba(111, 143, 0, 0.28);
	color: #5f7d00;
}
html[data-theme="light"] .fc-theme-toggle {
	background: #ffffff;
	border-color: rgba(16, 24, 15, 0.14);
}
html[data-theme="light"] .fc-theme-toggle:hover {
	background: #f2f7e7;
	border-color: rgba(111, 143, 0, 0.40);
	color: #5f7d00;
}
html[data-theme="light"] .fc-footer {
	background: #f7f9f4;
	color: #111610;
}
html[data-theme="light"] .fc-footer a,
html[data-theme="light"] .fc-footer__brand .fc-brand { color: #111610; }
html[data-theme="light"] .fc-footer__brand p,
html[data-theme="light"] .fc-footer__meta p { color: #667063; }

/* ---------------------------------------------------------
 * Light presentation — homepage
 * --------------------------------------------------------- */
html[data-theme="light"] .fc-hero {
	color: #111610;
	background:
		radial-gradient(circle at 67% 28%, rgba(181, 226, 0, 0.16), transparent 30%),
		linear-gradient(rgba(89, 112, 19, 0.055) 1px, transparent 1px),
		linear-gradient(90deg, rgba(89, 112, 19, 0.055) 1px, transparent 1px),
		#f8faf4;
	background-size: auto, 72px 72px, 72px 72px, auto;
}
html[data-theme="light"] .fc-hero::after {
	background: linear-gradient(90deg, rgba(255,255,255,0.08), transparent 42%, rgba(98,123,31,0.05));
}
html[data-theme="light"] .fc-hero__lede,
html[data-theme="light"] .fc-hero__metrics span { color: #5f685d; }
html[data-theme="light"] .fc-hero__metrics strong { color: #111610; }

/* Keep the systems workflow preview dark as a deliberate product mockup. */
html[data-theme="light"] .fc-sigma {
	color: var(--fc-cream);
	border-color: rgba(17, 22, 16, 0.18);
	box-shadow: 0 28px 80px rgba(35, 48, 25, 0.17);
}
html[data-theme="light"] .fc-sigma .fc-text-muted { color: var(--fc-text-muted); }

html[data-theme="light"] .fc-proof {
	background: #ffffff;
	border-color: rgba(84, 104, 31, 0.14);
}
html[data-theme="light"] .fc-proof p { color: #667063; }
html[data-theme="light"] .fc-proof li {
	border-left-color: rgba(16, 24, 15, 0.10);
	color: #2b3329;
}

html[data-theme="light"] .fc-services,
html[data-theme="light"] .fc-process,
html[data-theme="light"] .fc-about,
html[data-theme="light"] .fc-final-cta {
	background: #f4f7ef;
	color: #111610;
}
html[data-theme="light"] .fc-services .fc-section-heading p:not(.fc-eyebrow),
html[data-theme="light"] .fc-process .fc-section-heading p:not(.fc-eyebrow),
html[data-theme="light"] .fc-about__lede,
html[data-theme="light"] .fc-about__content > p:last-child,
html[data-theme="light"] .fc-final-cta p:not(.fc-eyebrow) { color: #5f685d; }

html[data-theme="light"] .fc-service-card,
html[data-theme="light"] .fc-pain-flow > div {
	background: #ffffff;
	border-color: rgba(16, 24, 15, 0.12);
	box-shadow: var(--fc-shadow-card);
}
html[data-theme="light"] .fc-service-card.has-link:hover,
html[data-theme="light"] .fc-service-card.has-link:focus-within {
	background: linear-gradient(180deg, rgba(181,226,0,0.09), transparent 48%), #ffffff;
	box-shadow: 0 20px 48px rgba(29, 42, 20, 0.11);
}
html[data-theme="light"] .fc-service-card h3,
html[data-theme="light"] .fc-service-card h3 a,
html[data-theme="light"] .fc-process__steps strong,
html[data-theme="light"] .fc-pain-flow strong { color: #111610; }
html[data-theme="light"] .fc-service-card > p,
html[data-theme="light"] .fc-service-card li,
html[data-theme="light"] .fc-process__steps p { color: #5f685d; }
html[data-theme="light"] .fc-service-card ul { border-top-color: rgba(16, 24, 15, 0.10); }
html[data-theme="light"] .fc-process__steps li,
html[data-theme="light"] .fc-pain-flow { border-color: rgba(76, 99, 22, 0.18); }

html[data-theme="light"] .fc-about__roles span {
	background: #ffffff;
	border-color: rgba(16, 24, 15, 0.12);
	color: #2e362c;
}
html[data-theme="light"] .fc-about__portrait {
	box-shadow: var(--fc-shadow-card);
}
html[data-theme="light"] .fc-final-cta {
	background: radial-gradient(circle at 80% 50%, rgba(181,226,0,0.15), transparent 30%), #ffffff;
}
html[data-theme="light"] .fc-button--ghost {
	border-color: rgba(93, 121, 0, 0.62);
	color: #111610;
}
html[data-theme="light"] .fc-button--ghost:hover { color: #111610; }

/* Existing light sections remain intentionally light in both modes. */
html[data-theme="light"] .fc-section--light,
html[data-theme="light"] .fc-investment {
	background: #f9faf6;
}
html[data-theme="light"] .fc-case-card,
html[data-theme="light"] .fc-investment-card,
html[data-theme="light"] .fc-lab-card--ai {
	background: #ffffff;
	box-shadow: var(--fc-shadow-card);
}

/* ---------------------------------------------------------
 * Light presentation — service pages and archive
 * --------------------------------------------------------- */
html[data-theme="light"] .fc-service-detail,
html[data-theme="light"] .fc-services-hub { background: #f7f9f4; color: #111610; }
html[data-theme="light"] .fc-service-hero,
html[data-theme="light"] .fc-services-hub-hero {
	color: #111610;
	background:
		radial-gradient(circle at 78% 22%, rgba(181, 226, 0, 0.16), transparent 27%),
		linear-gradient(rgba(89,112,19,0.05) 1px, transparent 1px),
		linear-gradient(90deg, rgba(89,112,19,0.05) 1px, transparent 1px),
		#f8faf4;
	background-size: auto, 72px 72px, 72px 72px, auto;
}
html[data-theme="light"] .fc-service-hero::after { background: linear-gradient(90deg, transparent 55%, rgba(88,109,28,0.05)); }
html[data-theme="light"] .fc-service-hero__label,
html[data-theme="light"] .fc-service-hero__lede { color: #5f685d; }

/* Keep the service value panel and architecture map as high-contrast components. */
html[data-theme="light"] .fc-service-value,
html[data-theme="light"] .fc-services-hub-map { color: var(--fc-cream); }

html[data-theme="light"] .fc-service-stack,
html[data-theme="light"] .fc-service-method,
html[data-theme="light"] .fc-service-cta,
html[data-theme="light"] .fc-services-hub-combine,
html[data-theme="light"] .fc-services-hub-method,
html[data-theme="light"] .fc-services-hub-cta {
	background: #f1f5eb;
	color: #111610;
}
html[data-theme="light"] .fc-service-stack__list li,
html[data-theme="light"] .fc-service-method__steps strong,
html[data-theme="light"] .fc-services-hub-combine__flow strong,
html[data-theme="light"] .fc-services-hub-method__steps strong {
	color: #111610;
}
html[data-theme="light"] .fc-service-stack__list li,
html[data-theme="light"] .fc-services-hub-combine__flow > div {
	background: #ffffff;
	border-color: rgba(16,24,15,0.12);
}
html[data-theme="light"] .fc-service-method__steps,
html[data-theme="light"] .fc-service-method__steps li + li,
html[data-theme="light"] .fc-services-hub-method__steps,
html[data-theme="light"] .fc-services-hub-method__steps li {
	border-color: rgba(16,24,15,0.12);
}
html[data-theme="light"] .fc-service-method__steps small,
html[data-theme="light"] .fc-service-method .fc-section-heading--split > p,
html[data-theme="light"] .fc-services-hub-combine__flow small,
html[data-theme="light"] .fc-services-hub-method__steps small,
html[data-theme="light"] .fc-services-hub-cta__inner p:not(.fc-eyebrow) { color: #5f685d; }
html[data-theme="light"] .fc-service-cta__inner,
html[data-theme="light"] .fc-services-hub-cta__inner {
	background: radial-gradient(circle at 88% 12%, rgba(181,226,0,0.15), transparent 30%), #ffffff;
	border-color: rgba(16,24,15,0.12);
	box-shadow: var(--fc-shadow-card);
}

/* ---------------------------------------------------------
 * Mobile polish
 * --------------------------------------------------------- */

@media (max-width: 1180px) and (min-width: 981px) {
	.fc-header__inner { grid-template-columns: minmax(180px, 1fr) auto auto; }
	.fc-theme-toggle__label { display: none; }
	.fc-theme-toggle { width: 42px; min-width: 42px; padding-inline: 0; }
}

@media (max-width: 980px) {
	.fc-header__inner {
		grid-template-columns: minmax(0, 1fr) auto;
	}
	.fc-header__actions { gap: 0.5rem; }
	.fc-theme-toggle__label { display: none; }
	.fc-theme-toggle { width: 42px; min-width: 42px; padding-inline: 0; }
	html[data-theme="light"] .fc-nav { background: rgba(250, 252, 247, 0.98); }
}

@media (max-width: 700px) {
	.fc-home section[id],
	.fc-main [id] { scroll-margin-top: 84px; }

	.fc-header__inner { gap: 0.6rem; }
	.fc-brand__name { font-size: 0.92rem; }
	.fc-case-card,
	.fc-service-card,
	.fc-investment-card,
	.fc-lab-card { border-radius: 14px; }
}

@media (max-width: 430px) {
	.fc-header__actions { gap: 0.4rem; }
	.fc-theme-toggle,
	.fc-nav-toggle { min-height: 40px; }
	.fc-theme-toggle { width: 40px; min-width: 40px; }
}

@media (prefers-reduced-motion: reduce) {
	.fc-theme-toggle,
	.fc-theme-toggle__icon::after { transition: none; }
}