/* =====================================================================
   FANTASMA · Dispositivo didáctico interactivo
   Hoja de estilos. CSS3 moderno, variables, sin frameworks.
   Espacio de nombres: .fs-* / #fantasma-root
   ===================================================================== */

:root {
	/* Paleta desaturada ---------------------------------------------- */
	--fs-bg:        #0b0c10;
	--fs-bg-2:      #111319;
	--fs-surface:   #16181f;
	--fs-surface-2: #1c1f28;
	--fs-line:      #2a2e3a;
	--fs-line-soft: #20232c;

	--fs-ink:       #e7e3da;
	--fs-ink-soft:  #b6b2a9;
	--fs-muted:     #7d8089;
	--fs-dim:       #565862;

	/* Tres registros */
	--fs-real:      #a8524a;   /* lo Real · goce */
	--fs-simbolico: #5b7a9a;   /* lo Simbólico · ley */
	--fs-imag:      #b8965a;   /* lo Imaginario · imagen */
	--fs-accent:    #d6b06a;   /* objeto a · causa */

	--fs-serif: Georgia, "Times New Roman", "Noto Serif", serif;
	--fs-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	--fs-mono: "SF Mono", "Cascadia Code", Consolas, "Courier New", monospace;

	--fs-r: 14px;
	--fs-maxw: 1180px;
	--fs-ease: cubic-bezier(.22, .61, .36, 1);
	--fs-quick: cubic-bezier(.4, 0, .2, 1);
}

#fantasma-root {
	/* aislamiento del tema anfitrión */
	all: initial;
	display: block;
	box-sizing: border-box;
	font-family: var(--fs-sans);
	font-size: var(--fs-r);
	line-height: 1.6;
	color: var(--fs-ink);
	background: var(--fs-bg);
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
}

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

#fantasma-root button {
	font-family: inherit;
	font-size: inherit;
	color: inherit;
	background: none;
	border: none;
	cursor: pointer;
}

#fantasma-root h1,
#fantasma-root h2,
#fantasma-root h3 {
	font-family: var(--fs-serif);
	font-weight: 400;
	margin: 0;
	letter-spacing: .01em;
}

/* ============ Texto utilitario ============ */
.fs-kicker {
	font-family: var(--fs-mono);
	font-size: .72rem;
	letter-spacing: .28em;
	text-transform: uppercase;
	color: var(--fs-muted);
	margin: 0 0 1.4rem;
}

.fs-section__num {
	font-family: var(--fs-mono);
	font-size: .75rem;
	letter-spacing: .2em;
	color: var(--fs-accent);
	display: block;
	margin-bottom: .8rem;
}

/* ============ Matema (símbolos) ============ */
.fs-matema {
	font-family: var(--fs-serif);
	display: inline-flex;
	align-items: center;
	gap: .35em;
	white-space: nowrap;
}

.fs-matema--hero {
	font-size: clamp(4rem, 14vw, 10rem);
	line-height: 1;
	letter-spacing: .02em;
}

.fs-matema--inline {
	font-size: 1.15em;
	gap: .25em;
	vertical-align: baseline;
}

.fs-matema .fs-term { color: var(--fs-ink); }
.fs-matema .fs-losange {
	color: var(--fs-accent);
	transform: translateY(-.02em);
}

/* el sujeto barrado $ ya trae la barra en su glifo */
.fs-term-card__glyph { font-family: var(--fs-serif); }

/* ============ Portal ============ */
.fs-portal {
	position: relative;
	min-height: 100svh;
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	overflow: hidden;
	background:
		radial-gradient(120% 80% at 50% 110%, rgba(214, 176, 106, .08), transparent 60%),
		radial-gradient(90% 70% at 50% -10%, rgba(91, 122, 154, .06), transparent 55%),
		var(--fs-bg);
}

.fs-portal__grain {
	position: absolute;
	inset: 0;
	pointer-events: none;
	opacity: .5;
	mix-blend-mode: overlay;
	background-image:
		radial-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px);
	background-size: 3px 3px;
}

.fs-portal__inner {
	position: relative;
	padding: 6rem 1.5rem 4rem;
	max-width: var(--fs-maxw);
}

.fs-title {
	font-size: clamp(3.5rem, 13vw, 9rem);
	line-height: .9;
	letter-spacing: .04em;
	margin: 0 0 1.6rem;
	background: linear-gradient(180deg, var(--fs-ink) 0%, var(--fs-ink-soft) 100%);
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: transparent;
	animation: fs-rise 1s var(--fs-ease) both;
}

.fs-subtitle {
	max-width: 36rem;
	margin: 0 auto 2.6rem;
	font-size: 1.05rem;
	color: var(--fs-ink-soft);
	animation: fs-rise 1s var(--fs-ease) .15s both;
}

.fs-matema--hero { animation: fs-rise 1.2s var(--fs-ease) .3s both; }

/* dibujo del matema: trazado progresivo del losange */
.fs-matema--hero .fs-losange {
	display: inline-block;
	animation: fs-pulse-losange 4s var(--fs-ease) 1.4s infinite;
}

@keyframes fs-pulse-losange {
	0%, 100% { transform: translateY(-.02em) scale(1); opacity: .85; }
	50% { transform: translateY(-.02em) scale(1.08); opacity: 1; }
}

/* ============ Botones ============ */
.fs-btn {
	font-family: var(--fs-mono);
	font-size: .82rem;
	letter-spacing: .12em;
	text-transform: uppercase;
	padding: .9rem 1.8rem;
	border: 1px solid var(--fs-accent);
	color: var(--fs-accent);
	background: rgba(214, 176, 106, .04);
	border-radius: 2px;
	transition: all .35s var(--fs-ease);
	position: relative;
	overflow: hidden;
}

.fs-btn:hover {
	background: var(--fs-accent);
	color: var(--fs-bg);
	box-shadow: 0 0 24px rgba(214, 176, 106, .25);
}

.fs-btn--small { padding: .55rem 1rem; font-size: .72rem; }

.fs-btn--ghost {
	border-color: var(--fs-line);
	color: var(--fs-ink-soft);
	background: transparent;
}

.fs-btn--ghost:hover {
	border-color: var(--fs-ink-soft);
	color: var(--fs-ink);
	background: rgba(255, 255, 255, .04);
	box-shadow: none;
}

#fs-start .fs-btn__caret {
	display: inline-block;
	margin-left: .6rem;
	transition: transform .35s var(--fs-ease);
}
#fs-start:hover .fs-btn__caret { transform: translateY(3px); }

/* ============ Secciones ============ */
.fs-section {
	max-width: var(--fs-maxw);
	margin: 0 auto;
	padding: clamp(4rem, 9vw, 7rem) 1.5rem;
	border-top: 1px solid var(--fs-line-soft);
}

.fs-section__head { max-width: 56rem; margin-bottom: 3rem; }

.fs-section__title {
	font-size: clamp(1.8rem, 4.5vw, 3rem);
	margin-bottom: 1rem;
}

.fs-section__lead {
	color: var(--fs-ink-soft);
	font-size: 1.02rem;
	max-width: 48rem;
}

/* reveal on scroll */
.fs-section {
	opacity: 0;
	transform: translateY(28px);
	transition: opacity .9s var(--fs-ease), transform .9s var(--fs-ease);
}
.fs-section.is-visible { opacity: 1; transform: none; }

@keyframes fs-rise {
	from { opacity: 0; transform: translateY(20px); }
	to   { opacity: 1; transform: none; }
}

/* ============ Stage (lienzo) ============ */
.fs-stage {
	background: linear-gradient(180deg, var(--fs-surface) 0%, var(--fs-bg-2) 100%);
	border: 1px solid var(--fs-line);
	border-radius: 6px;
	overflow: hidden;
}

.fs-stage__bar {
	display: flex;
	gap: .25rem;
	padding: .8rem;
	background: var(--fs-surface-2);
	border-bottom: 1px solid var(--fs-line);
	flex-wrap: wrap;
}

.fs-tab {
	font-family: var(--fs-mono);
	font-size: .72rem;
	letter-spacing: .12em;
	text-transform: uppercase;
	color: var(--fs-muted);
	padding: .55rem 1rem;
	border: 1px solid transparent;
	border-radius: 3px;
	transition: all .3s var(--fs-quick);
}

.fs-tab:hover { color: var(--fs-ink-soft); }

.fs-tab.is-active {
	color: var(--fs-accent);
	border-color: var(--fs-line);
	background: rgba(214, 176, 106, .06);
}

.fs-stage__view {
	position: relative;
	width: 100%;
	aspect-ratio: 900 / 560;
	max-height: 70vh;
	background:
		radial-gradient(70% 60% at 50% 45%, rgba(91, 122, 154, .05), transparent 70%);
	touch-action: none;
}

#fs-canvas,
.fs-borromeo {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	display: block;
}

.fs-borromeo { opacity: 0; pointer-events: none; transition: opacity .5s; }
.fs-stage[data-mode="borromeo"] .fs-borromeo { opacity: 1; pointer-events: auto; }
.fs-stage[data-mode="borromeo"] #fs-canvas { opacity: 0; }

.fs-stage__hud {
	position: absolute;
	left: 1rem;
	bottom: 1rem;
	font-family: var(--fs-mono);
	font-size: .68rem;
	letter-spacing: .1em;
	color: var(--fs-dim);
	pointer-events: none;
}

.fs-stage__controls {
	display: flex;
	align-items: center;
	gap: 1rem;
	padding: 1rem 1.2rem;
	border-top: 1px solid var(--fs-line);
	background: var(--fs-surface-2);
	flex-wrap: wrap;
}

.fs-switch {
	display: inline-flex;
	align-items: center;
	gap: .5rem;
	font-family: var(--fs-mono);
	font-size: .72rem;
	letter-spacing: .1em;
	text-transform: uppercase;
	color: var(--fs-muted);
	cursor: pointer;
}
.fs-switch input { accent-color: var(--fs-accent); }

.fs-stage__caption {
	padding: 1.2rem 1.5rem 1.6rem;
	font-size: .95rem;
	color: var(--fs-ink-soft);
	border-top: 1px solid var(--fs-line);
	min-height: 4rem;
}
.fs-stage__caption strong { color: var(--fs-accent); font-weight: 600; }
.fs-stage__caption em { color: var(--fs-imag); font-style: italic; }

/* ============ Matema — desconstrucción ============ */
.fs-matema--big {
	display: flex;
	justify-content: center;
	gap: clamp(1.5rem, 5vw, 4rem);
	flex-wrap: wrap;
	margin-bottom: 2.5rem;
}

.fs-term-card {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: .9rem;
	padding: 2.2rem 2rem;
	min-width: 9rem;
	border: 1px solid var(--fs-line);
	border-radius: 6px;
	background: var(--fs-surface);
	transition: all .4s var(--fs-ease);
}

.fs-term-card:hover,
.fs-term-card.is-active {
	border-color: var(--fs-accent);
	background: rgba(214, 176, 106, .05);
	transform: translateY(-4px);
}

.fs-term-card__glyph {
	font-size: clamp(2.5rem, 6vw, 4rem);
	color: var(--fs-ink);
	transition: color .4s;
}
.fs-term-card[data-term="losange"] .fs-term-card__glyph { color: var(--fs-accent); }
.fs-term-card[data-term="objeto"] .fs-term-card__glyph { color: var(--fs-imag); }
.fs-term-card.is-active .fs-term-card__glyph { color: var(--fs-accent); }

.fs-term-card__name {
	font-family: var(--fs-mono);
	font-size: .72rem;
	letter-spacing: .14em;
	text-transform: uppercase;
	color: var(--fs-muted);
}

.fs-reveal {
	max-width: 50rem;
	margin: 0 auto;
	padding: 1.6rem 1.8rem;
	border-left: 2px solid var(--fs-accent);
	background: var(--fs-surface);
	min-height: 4rem;
	font-size: 1rem;
	color: var(--fs-ink-soft);
	transition: opacity .4s;
}
.fs-reveal h3 {
	color: var(--fs-ink);
	font-size: 1.3rem;
	margin-bottom: .6rem;
}
.fs-reveal:empty { display: none; }

.fs-ops { margin-top: 3rem; }
.fs-ops__title {
	text-align: center;
	font-size: 1.2rem;
	color: var(--fs-ink-soft);
	margin-bottom: 1.6rem;
}
.fs-ops__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
	gap: 1rem;
}
.fs-op {
	padding: 1.4rem;
	border: 1px solid var(--fs-line);
	border-radius: 5px;
	background: var(--fs-surface);
	transition: all .35s;
}
.fs-op:hover { border-color: var(--fs-accent); transform: translateY(-3px); }
.fs-op__sym {
	display: block;
	font-family: var(--fs-serif);
	font-size: 2.2rem;
	color: var(--fs-accent);
	margin-bottom: .3rem;
}
.fs-op__name {
	font-family: var(--fs-mono);
	font-size: .72rem;
	letter-spacing: .14em;
	text-transform: uppercase;
	color: var(--fs-ink);
	display: block;
	margin-bottom: .6rem;
}
.fs-op p { margin: 0; font-size: .9rem; color: var(--fs-muted); }

/* ============ Grafo del deseo ============ */
.fs-grafo__stage { text-align: center; }
#fs-grafo-svg {
	width: 100%;
	max-width: 900px;
	height: auto;
	margin: 0 auto 1.4rem;
	display: block;
}

/* ============ Pegan a un niño ============ */
.fs-pegan__phases {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
	gap: 1rem;
	margin-bottom: 2rem;
}
.fs-phase {
	display: flex;
	flex-direction: column;
	gap: .6rem;
	text-align: left;
	padding: 1.3rem 1.4rem;
	border: 1px solid var(--fs-line);
	border-radius: 5px;
	background: var(--fs-surface);
	transition: all .35s;
}
.fs-phase:hover { border-color: var(--fs-imag); }
.fs-phase.is-active {
	border-color: var(--fs-imag);
	background: rgba(184, 150, 90, .06);
}
.fs-phase__num {
	font-family: var(--fs-mono);
	font-size: .7rem;
	letter-spacing: .16em;
	text-transform: uppercase;
	color: var(--fs-imag);
}
.fs-phase__text { font-family: var(--fs-serif); font-size: 1.05rem; color: var(--fs-ink); }
.fs-phase__tag {
	font-size: .72rem;
	color: var(--fs-muted);
	font-family: var(--fs-mono);
	letter-spacing: .08em;
}

.fs-pegan__scene {
	padding: 2rem;
	border: 1px solid var(--fs-line);
	border-radius: 5px;
	background: var(--fs-surface);
	min-height: 8rem;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 1rem;
	flex-wrap: wrap;
}
.fs-role {
	padding: .7rem 1.1rem;
	border: 1px solid var(--fs-line);
	border-radius: 50px;
	font-size: .9rem;
	color: var(--fs-ink-soft);
	background: var(--fs-surface-2);
	transition: all .4s var(--fs-ease);
}
.fs-role[data-pos="activo"] { border-color: var(--fs-real); color: var(--fs-ink); }
.fs-role[data-pos="pasivo"] { border-color: var(--fs-simbolico); color: var(--fs-ink); }
.fs-role[data-pos="mirada"] {
	border-color: var(--fs-accent);
	color: var(--fs-bg);
	background: var(--fs-accent);
	opacity: .35;
	filter: blur(.3px);
}
.fs-role[data-pos="ausente"] { opacity: 0; transform: scale(.6); }
.fs-pegan__gloss { width: 100%; text-align: center; color: var(--fs-muted); font-size: .9rem; margin-top: .5rem; }

/* ============ Clínica toggle ============ */
.fs-toggle {
	display: inline-flex;
	align-items: center;
	gap: 0;
	padding: .35rem;
	border: 1px solid var(--fs-line);
	border-radius: 50px;
	background: var(--fs-surface);
	margin-bottom: 2rem;
	position: relative;
}
.fs-toggle__btn {
	font-family: var(--fs-mono);
	font-size: .76rem;
	letter-spacing: .12em;
	text-transform: uppercase;
	padding: .65rem 1.5rem;
	color: var(--fs-muted);
	border-radius: 50px;
	position: relative;
	z-index: 2;
	transition: color .35s;
}
.fs-toggle__btn.is-active { color: var(--fs-bg); }
.fs-toggle__track {
	position: absolute;
	top: .35rem;
	left: .35rem;
	width: calc(50% - .35rem);
	height: calc(100% - .7rem);
	background: var(--fs-accent);
	border-radius: 50px;
	transition: transform .45s var(--fs-ease);
	z-index: 1;
}
.fs-toggle[data-clinica="perversion"] .fs-toggle__track { transform: translateX(100%); }

.fs-clinica__board {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
	gap: 1.2rem;
}
.fs-card {
	padding: 1.5rem 1.6rem;
	border: 1px solid var(--fs-line);
	border-radius: 5px;
	background: var(--fs-surface);
	transition: opacity .4s;
}
.fs-card h4 {
	font-family: var(--fs-mono);
	font-size: .72rem;
	letter-spacing: .14em;
	text-transform: uppercase;
	color: var(--fs-muted);
	margin: 0 0 .6rem;
	font-weight: 500;
}
.fs-card p { margin: 0; color: var(--fs-ink-soft); font-size: .95rem; }
.fs-card--accent { border-left: 3px solid var(--fs-accent); }

.fs-formula {
	font-family: var(--fs-serif);
	font-size: 2.4rem;
	text-align: center;
	padding: 1rem;
	color: var(--fs-ink);
	letter-spacing: .04em;
}
.fs-formula .mark-a { color: var(--fs-imag); }
.fs-formula .mark-s { color: var(--fs-ink); }
.fs-formula .losange { color: var(--fs-accent); }
.fs-formula .ghost { opacity: .25; }

/* ============ Final del análisis ============ */
.fs-final__stage { max-width: 760px; margin: 0 auto; text-align: center; }
.fs-screen {
	position: relative;
	height: 320px;
	border: 1px solid var(--fs-line);
	border-radius: 6px;
	background:
		repeating-linear-gradient(90deg,
			rgba(184, 150, 90, .04) 0 2px,
			transparent 2px 6px),
		var(--fs-surface);
	overflow: hidden;
	cursor: ew-resize;
	touch-action: none;
}
.fs-screen__veil {
	position: absolute;
	inset: 0;
	background:
		radial-gradient(60% 80% at 50% 50%, rgba(214,176,106,.12), transparent 70%),
		linear-gradient(90deg, rgba(11,12,16,.92), rgba(17,19,25,.86));
	transition: clip-path .05s linear;
	clip-path: inset(0 0 0 0);
}
.fs-screen__core {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: .5rem;
	opacity: 0;
	transition: opacity .6s;
}
.fs-sinthome__ring {
	width: 46px;
	height: 70px;
	border: 2px solid var(--fs-accent);
	border-radius: 50%;
	opacity: .8;
	animation: fs-ring-pulse 3s ease-in-out infinite;
}
.fs-sinthome__ring:nth-child(1) { transform: translateX(22px); border-color: var(--fs-real); }
.fs-sinthome__ring:nth-child(2) { border-color: var(--fs-simbolico); animation-delay: .4s; }
.fs-sinthome__ring:nth-child(3) { transform: translateX(-22px); border-color: var(--fs-imag); animation-delay: .8s; }
@keyframes fs-ring-pulse {
	0%,100% { transform: translateY(0) scaleX(1); }
	50% { transform: translateY(0) scaleX(1.08); }
}
.fs-sinthome__label {
	position: absolute;
	bottom: 1.2rem;
	font-family: var(--fs-mono);
	font-size: .8rem;
	letter-spacing: .3em;
	text-transform: uppercase;
	color: var(--fs-accent);
}
.fs-final__hint {
	margin-top: 1.2rem;
	font-family: var(--fs-mono);
	font-size: .76rem;
	letter-spacing: .1em;
	color: var(--fs-dim);
}

/* ============ Footer ============ */
.fs-footer {
	max-width: var(--fs-maxw);
	margin: 0 auto;
	padding: 4rem 1.5rem;
	text-align: center;
	border-top: 1px solid var(--fs-line-soft);
}
.fs-footer__matema {
	font-family: var(--fs-serif);
	font-size: 2rem;
	color: var(--fs-accent);
	letter-spacing: .05em;
	margin-bottom: 1rem;
}
.fs-footer__cite {
	font-size: .85rem;
	color: var(--fs-muted);
	max-width: 40rem;
	margin: 0 auto;
}

/* ============ Responsive ============ */
@media (max-width: 720px) {
	.fs-stage__view { aspect-ratio: 4 / 5; }
	.fs-matema--big { gap: 1rem; }
	.fs-term-card { min-width: 7rem; padding: 1.6rem 1.2rem; }
	.fs-screen { height: 240px; }
}

@media (prefers-reduced-motion: reduce) {
	* { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}