/* Scroll-World-Seite: Kamerafahrt-Gefuehl per CSS/JS statt generierter Videos.
   Eigenstaendiges Theme, bewusst getrennt von style.css (Rechtstexte). */

:root {
	--sw-bg: #0b0d12;
	--sw-bg-2: #12151d;
	--sw-ink: #f2f1ea;
	--sw-muted: #a6a9b4;
	--sw-accent: #59d9b3;
	--sw-border: rgba(242, 241, 234, 0.12);
	--sw-nav-bg: rgba(11, 13, 18, 0.55);
	--sw-primary-ink: #08110d;
	--sw-font: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	--sw-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* Light pendant (#41). welt.css's natural/default state is dark — unlike
   style.css's pages — so here [data-theme="light"] is the override, not
   [data-theme="dark"]. Reuses style.css's light --fg/--muted tokens for
   ink/muted so the toggle reads consistently across all public pages.
   The scene SVG illustrations (scene__art) keep their own hardcoded dark
   palette — each carries its own background rect, so it's unaffected by
   the page background and stays legible; redrawing four illustrations
   per theme was judged out of proportion for this toggle. --sw-accent is
   darkened slightly in light mode for text/link contrast against the
   lighter background. */
:root[data-theme="light"] {
	--sw-bg: #f5f4ef;
	--sw-bg-2: #e9e7df;
	--sw-ink: #1b1b1b;
	--sw-muted: #5a5a5a;
	--sw-accent: #1f8f7a;
	--sw-border: rgba(27, 27, 27, 0.14);
	--sw-nav-bg: rgba(255, 255, 255, 0.72);
	--sw-primary-ink: #ffffff;
}

* { box-sizing: border-box; }

html { scroll-behavior: auto; }

body.world {
	margin: 0;
	background: var(--sw-bg);
	color: var(--sw-ink);
	font-family: var(--sw-font);
	line-height: 1.6;
	overflow-x: hidden;
	transition: background-color 0.15s ease, color 0.15s ease;
}

/* Nav */
.world-nav {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 50;
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 0.75rem;
	padding: 1rem 1.5rem;
	font-size: 0.9rem;
	pointer-events: none;
}

.world-nav a {
	pointer-events: auto;
	color: var(--sw-ink);
	text-decoration: none;
	opacity: 0.85;
	border: 1px solid var(--sw-border);
	background: var(--sw-nav-bg);
	backdrop-filter: blur(6px);
	padding: 0.45rem 0.9rem;
	border-radius: 999px;
	transition: opacity 0.2s ease, border-color 0.2s ease, background-color 0.15s ease;
}

.world-nav a:hover { opacity: 1; border-color: var(--sw-accent); }

/* Theme toggle (shares the .theme-toggle base from style.css conceptually,
   restyled here to fit the world-nav pill look — see #40/#41). */
.world-nav .theme-toggle {
	pointer-events: auto;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.4rem;
	height: 2.4rem;
	border-radius: 999px;
	border: 1px solid var(--sw-border);
	background: var(--sw-nav-bg);
	backdrop-filter: blur(6px);
	color: var(--sw-ink);
	font-size: 1.05rem;
	line-height: 1;
	cursor: pointer;
	padding: 0;
	opacity: 0.85;
	transition: opacity 0.2s ease, border-color 0.2s ease, background-color 0.15s ease;
}

.world-nav .theme-toggle:hover { opacity: 1; border-color: var(--sw-accent); }
.world-nav .theme-toggle:focus-visible { outline: 2px solid var(--sw-accent); outline-offset: 2px; }

/* Top progress bar */
.scene-progress {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	height: 3px;
	background: transparent;
	z-index: 60;
}

.scene-progress__bar {
	height: 100%;
	width: 0%;
	background: var(--sw-accent);
	transition: background-color 0.4s ease;
}

/* Route rail (Szenen-Punkte) */
.route-rail {
	position: fixed;
	right: 1.25rem;
	top: 50%;
	transform: translateY(-50%);
	z-index: 50;
	display: flex;
	flex-direction: column;
	gap: 0.65rem;
}

.route-rail button {
	width: 9px;
	height: 9px;
	border-radius: 50%;
	border: 1px solid var(--sw-border);
	background: transparent;
	padding: 0;
	cursor: pointer;
	transition: background-color 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}

.route-rail button.is-active {
	background: var(--sw-accent);
	border-color: var(--sw-accent);
	transform: scale(1.3);
}

@media (max-width: 720px) {
	.route-rail { display: none; }
}

/* Scenes */
main.world { position: relative; z-index: 1; }

.scene {
	position: relative;
	height: 220vh;
	/* svh statt dvh: dvh aendert sich live beim Ein-/Ausfahren der mobilen
	   Adressleiste, wodurch die Scrollytelling-Szene bei jedem Scroll-Tick
	   neu berechnet wird und "springt" (Issue #298, Nachbesserung zu #256).
	   svh bleibt stabil (kleinstmoegliche Hoehe, Leiste ausgeklappt). vh
	   bleibt als Fallback fuer Browser ohne svh-Support (letzte gewinnt). */
	height: 220svh;
}

.scene--outro {
	height: 130vh;
	height: 130svh;
}

.scene__sticky {
	position: sticky;
	top: 0;
	height: 100vh;
	height: 100svh;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
	background:
		radial-gradient(60% 55% at 50% 38%, color-mix(in srgb, var(--accent, var(--sw-accent)) 22%, transparent), transparent 70%),
		linear-gradient(180deg, var(--sw-bg) 0%, var(--sw-bg-2) 100%);
}

.scene__stage {
	position: relative;
	width: min(1100px, 92vw);
	display: grid;
	grid-template-columns: 1fr 1fr;
	align-items: center;
	gap: 3rem;
	will-change: transform, opacity;
}

.scene--intro .scene__stage,
.scene--outro .scene__stage {
	grid-template-columns: 1fr;
	justify-items: center;
	text-align: center;
}

.scene__art {
	position: relative;
	aspect-ratio: 4 / 3;
	display: flex;
	align-items: center;
	justify-content: center;
}

.scene__art svg { width: 100%; height: 100%; overflow: visible; }

.scene__copy .eyebrow {
	font-family: var(--sw-mono);
	font-size: 0.8rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--accent, var(--sw-accent));
	margin: 0 0 0.75rem;
}

.scene__copy h1,
.scene__copy h2 {
	font-size: clamp(1.75rem, 3.4vw, 2.6rem);
	margin: 0 0 0.85rem;
	letter-spacing: -0.01em;
}

.scene__copy p {
	color: var(--sw-muted);
	max-width: 40ch;
	margin: 0 0 1rem;
}

.scene--intro .scene__copy p,
.scene--outro .scene__copy p { max-width: 46ch; margin-left: auto; margin-right: auto; }

.tags {
	list-style: none;
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	padding: 0;
	margin: 1rem 0 0;
}

.tags li {
	font-size: 0.78rem;
	font-family: var(--sw-mono);
	border: 1px solid var(--sw-border);
	border-radius: 999px;
	padding: 0.3rem 0.7rem;
	color: var(--sw-muted);
}

.scroll-hint {
	margin-top: 2.5rem;
	font-size: 0.85rem;
	color: var(--sw-muted);
	animation: sw-bob 2s ease-in-out infinite;
}

@keyframes sw-bob {
	0%, 100% { transform: translateY(0); opacity: 0.6; }
	50% { transform: translateY(6px); opacity: 1; }
}

.cursor {
	display: inline-block;
	width: 0.55em;
	background: var(--sw-accent);
	margin-left: 2px;
	animation: sw-blink 1s steps(1) infinite;
}

@keyframes sw-blink { 50% { opacity: 0; } }

.cta-row {
	display: flex;
	gap: 0.75rem;
	flex-wrap: wrap;
	justify-content: center;
	margin-top: 1.5rem;
}

.btn {
	display: inline-block;
	text-decoration: none;
	padding: 0.7rem 1.3rem;
	border-radius: 8px;
	font-size: 0.95rem;
	border: 1px solid var(--sw-border);
	color: var(--sw-ink);
	transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.btn:hover { transform: translateY(-2px); border-color: var(--sw-accent); }

.btn--primary {
	background: var(--sw-accent);
	color: var(--sw-primary-ink);
	border-color: var(--sw-accent);
	font-weight: 600;
}

.btn--primary:hover { background: color-mix(in srgb, var(--sw-accent) 85%, white); }

/* Parallax helpers driven by --p (0..1 within a pinned scene) and --op (fade shape) */
.parallax-back  { transform: translateY(calc((1 - var(--p, 0)) * 28px)) scale(calc(0.92 + var(--p, 0) * 0.08)); }
.parallax-mid   { transform: translateY(calc((1 - var(--p, 0)) * 14px)) scale(calc(0.96 + var(--p, 0) * 0.06)); }
.parallax-front { transform: translateY(calc((1 - var(--p, 0)) * -10px)); }

.scene__stage {
	opacity: var(--op, 1);
	transform: translateY(calc((1 - var(--op, 1)) * 18px)) scale(calc(0.97 + var(--op, 1) * 0.03));
}

@media (max-width: 860px) {
	.scene__stage { grid-template-columns: 1fr; text-align: center; }
	.scene__copy p { margin-left: auto; margin-right: auto; }
	.scene__art { order: -1; max-width: 320px; margin: 0 auto; }
}

@media (prefers-reduced-motion: reduce) {
	.scene__stage, .parallax-back, .parallax-mid, .parallax-front, .scroll-hint, .cursor {
		animation: none !important;
		transform: none !important;
		opacity: 1 !important;
	}
	.scene { height: auto; }
	.scene__sticky { position: relative; height: auto; padding: 4rem 1rem; }
}

/* Footer (im World-Theme leicht angepasst) */
.world-footer {
	position: relative;
	z-index: 2;
	border-top: 1px solid var(--sw-border);
	padding: 1.5rem;
	font-size: 0.85rem;
	color: var(--sw-muted);
	text-align: center;
	background: var(--sw-bg-2);
}

.world-footer a { color: var(--sw-muted); text-decoration: none; }
.world-footer a:hover { color: var(--sw-ink); }
.world-footer a + a { margin-left: 1rem; }