/* ───────────────────────────────────────────────────────────────────────────
   STŌRVERAN — Stylesheet
   White paper. Black type. Nothing else.
   ─────────────────────────────────────────────────────────────────────────── */

:root {
  --white: #ffffff;
  --black: #000000;
  --grey: #8a8a8a;          /* used only for the scroll hint and hairlines */
  --hair: rgba(0, 0, 0, 0.18);

  --serif: "Cormorant Garamond", "Cormorant", Garamond, "Times New Roman", serif;
  --sans: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --gutter: clamp(1.5rem, 7vw, 9rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --slow: 1.4s;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--black);
  font-family: var(--serif);
  font-weight: 300;
  line-height: 1.3;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-loading { overflow: hidden; height: 100vh; }

a { color: inherit; text-decoration: none; }
button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

:focus-visible {
  outline: 1px solid var(--black);
  outline-offset: 4px;
}

p { margin: 0; }

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

/* ─── Type scale ─────────────────────────────────────────────────────────── */

.t-xl {
  font-size: clamp(3rem, 11vw, 13.5rem);
  line-height: 0.95;
  letter-spacing: -0.015em;
  font-weight: 300;
}
.t-l {
  font-size: clamp(2.4rem, 7vw, 8.5rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  font-weight: 300;
}
.t-m {
  font-size: clamp(1.6rem, 3.6vw, 3.8rem);
  line-height: 1.18;
  font-weight: 300;
}
.t-s {
  font-size: clamp(1.15rem, 1.9vw, 1.9rem);
  line-height: 1.5;
  font-weight: 400;
}

.ui {
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ─── Loader ─────────────────────────────────────────────────────────────── */

.loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.2rem;
  transition: opacity 1.1s var(--ease), visibility 0s linear 1.1s;
}
.loader.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__brand {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(1.6rem, 3.4vw, 3.2rem);
  letter-spacing: 0.32em;
  margin-right: -0.32em;          /* cancels trailing tracking so the word is truly centred */
  opacity: 0;
  animation: loader-brand 1.6s var(--ease) forwards;
  transition: letter-spacing 2.6s var(--ease);
}
.loader.is-tracking .loader__brand { letter-spacing: 0.44em; margin-right: -0.44em; }

@keyframes loader-brand {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.loader__bar {
  width: min(52vw, 340px);
  height: 1px;
  background: var(--hair);
  position: relative;
  overflow: hidden;
}
.loader__bar span {
  position: absolute;
  inset: 0;
  background: var(--black);
  transform-origin: left center;
  transform: scaleX(0);
  will-change: transform;
}

/* ─── Page reveal after loading ──────────────────────────────────────────── */

.site-header,
.hero__brand,
.hero__tagline {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 1.6s var(--ease), transform 1.6s var(--ease);
}
.hero__hint { opacity: 0; transition: opacity 1.6s var(--ease); }
body.is-ready .site-header   { opacity: 1; transform: none; transition-delay: 0.9s; }
body.is-ready .hero__brand   { opacity: 1; transform: none; transition-delay: 0.2s; }
body.is-ready .hero__tagline { opacity: 1; transform: none; transition-delay: 0.7s; }
body.is-ready .hero__hint    { opacity: 1; transition-delay: 1.6s; }

/* ─── Header ─────────────────────────────────────────────────────────────── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.6rem var(--gutter);
  pointer-events: none;
}
.site-header > * { pointer-events: auto; }

.site-header__brand {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.05rem;
  letter-spacing: 0.22em;
}

.site-header__nav {
  display: flex;
  align-items: center;
  gap: 2.4rem;
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}
.site-header__link { opacity: 0.55; transition: opacity 0.4s; }
.site-header__link:hover { opacity: 1; }

/* Language button */
.lang__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  letter-spacing: inherit;
  text-transform: inherit;
}
.lang__sep { opacity: 0.4; }
.lang__current { font-weight: 500; }

/* ─── Language modal (fullscreen) ───────────────────────────────────────── */

.lang-modal {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--white);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  opacity: 0;
  transition: opacity 0.6s var(--ease);
}
.lang-modal.is-open { opacity: 1; }
.lang-modal[hidden] { display: none; }

.lang-modal__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.6rem var(--gutter);
  flex: 0 0 auto;
}
.lang-modal__close {
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

.lang-modal__list {
  list-style: none;
  margin: auto 0;
  padding: 6vh var(--gutter) 10vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: clamp(2rem, 4vw, 4rem);
  max-width: 1400px;
  width: 100%;
  align-self: center;
}
.lang-modal__list li { border-bottom: 1px solid var(--hair); }
.lang-modal__list button {
  width: 100%;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: clamp(0.7rem, 1.5vh, 1.1rem) 0;
  font-family: var(--sans);
  font-weight: 400;
  font-size: clamp(1.3rem, 2.2vw, 2rem);
  letter-spacing: -0.01em;
  text-align: left;
  opacity: 0;
  transform: translate3d(0, 10px, 0);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: calc(var(--i, 0) * 25ms);
}
.lang-modal.is-open .lang-modal__list button { opacity: 1; transform: none; }
.lang-modal__code {
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--grey);
  font-weight: 500;
}
.lang-modal__list button:hover span:first-child,
.lang-modal__list button:focus-visible span:first-child {
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}
.lang-modal__list button:focus-visible { outline: 0; }
.lang-modal__list button[aria-current="true"] .lang-modal__code { color: var(--black); }

/* ─── Rail: reading progress + running head at the right edge ─────────── */

.rail {
  position: fixed;
  top: 0;
  right: clamp(1.1rem, 2.4vw, 2.6rem);
  height: 100vh;
  height: 100dvh;
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16vh 0 10vh;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.6s var(--ease) 1.2s;
}
body.is-ready .rail { opacity: 1; }

.rail__track {
  position: relative;
  flex: 1 1 auto;
  width: 1px;
  background: var(--hair);
}
.rail__track span {
  position: absolute;
  inset: 0;
  background: var(--black);
  transform-origin: top center;
  transform: scaleY(0);
  will-change: transform;
}

.rail__label {
display: none;
}

/* ─── Hero ───────────────────────────────────────────────────────────────── */

.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 var(--gutter);
  position: relative;
}

.hero__brand {
  margin: 0;
  font-weight: 300;
  font-size: clamp(2.6rem, 9.5vw, 11rem);
  letter-spacing: 0.14em;
  margin-right: -0.14em;
  line-height: 1;
}

.hero__tagline {
  margin-top: clamp(1.6rem, 4vh, 3rem);
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.34em;
  margin-right: -0.34em;
  text-transform: uppercase;
  font-weight: 500;
}

.hero__hint {
  position: absolute;
  bottom: 2.4rem;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  font-family: var(--sans);
  font-size: 0.58rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--grey);
}
.hero__hint span:last-child { margin-right: -0.26em; }
.hero__hint-line {
  display: block;
  width: 1px;
  height: 48px;
  background: var(--black);
  transform-origin: top;
  animation: hint-line 2.8s var(--ease) infinite;
}
@keyframes hint-line {
  0%   { transform: scaleY(0); transform-origin: top; }
  45%  { transform: scaleY(1); transform-origin: top; }
  55%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ─── Scenes ─────────────────────────────────────────────────────────────── */

.manifest { display: block; }

.scene {
  min-height: 88vh;
  min-height: 88svh;
  display: flex;
  padding: 12vh var(--gutter);
}
.scene--tall { min-height: 100vh; }

.scene--center {
  align-items: center;
  justify-content: center;
  text-align: center;
}
.scene--center > * { max-width: 20ch; }
.scene--center > .t-xl { max-width: 12ch; }

.scene--left {
  align-items: center;
  justify-content: flex-start;
  text-align: left;
}
.scene--left > * { max-width: 24ch; }

.scene--top-left {
  align-items: flex-start;
  justify-content: flex-start;
  text-align: left;
  padding-top: 22vh;
}
.scene--top-left > * { max-width: 26ch; }

.scene--right {
  align-items: center;
  justify-content: flex-end;
  text-align: right;
}
.scene--right > * { max-width: 26ch; }

.scene--bottom-right {
  align-items: flex-end;
  justify-content: flex-end;
  text-align: right;
}

.stack > * + * { margin-top: 0.9em; }

.framed {
  max-width: 44rem;             /* rem, not ch: the wrapper's own font is small */
  width: 100%;
  text-align: center;
  padding: 3rem 0;
}
.framed .rule { margin: 0 auto 3rem; }
.framed .rule:last-child { margin: 3rem auto 0; }

.rule {
  display: block;
  width: 3.2rem;
  height: 1px;
  background: var(--black);
  transform-origin: left center;
}

/* ─── Reveals (IntersectionObserver toggles .in) ────────────────────────── */

.reveal {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition:
    opacity var(--slow) var(--ease),
    transform var(--slow) var(--ease),
    letter-spacing 2.2s var(--ease),
    clip-path 1.6s var(--ease);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }

.reveal[data-fx="tracking"] { letter-spacing: 0.12em; transform: none; }
.reveal[data-fx="tracking"].in { letter-spacing: -0.015em; }
.t-l.reveal[data-fx="tracking"].in { letter-spacing: -0.01em; }

.reveal[data-fx="scale"] { transform: scale(1.05); }
.reveal[data-fx="scale"].in { transform: scale(1); }

.reveal[data-fx="mask"] {
  opacity: 1;
  transform: translate3d(0, 0.35em, 0);
  clip-path: inset(0 0 100% 0);
}
.reveal[data-fx="mask"].in { clip-path: inset(0 0 -0.2em 0); transform: none; }

.stack .reveal:nth-child(2) { transition-delay: 0.18s; }
.stack .reveal:nth-child(3) { transition-delay: 0.36s; }

.rule.reveal { opacity: 1; transform: scaleX(0); }
.rule.reveal.in { transform: scaleX(1); }

/* ─── Thread: vertical line that fills black while scrolling ───────────── */

.thread { position: relative; }
.thread__track {
  position: absolute;
  top: 0;
  bottom: -50vh;               /* runs on into the next sticky scene, up to its centred statement */
  left: 50%;
  width: 1px;
  margin-left: -0.5px;
  background: var(--hair);
  pointer-events: none;
}
.thread__track span {
  position: absolute;
  inset: 0;
  background: var(--black);
  transform-origin: top center;
  transform: scaleY(0);
  will-change: transform;
}
.thread__scene { position: relative; z-index: 1; }
.thread__scene > .stack { max-width: 100%; width: 100%; }
.thread__scene .stack > * {
  background: var(--white);
  padding: 0.18em 0.45em;      /* the text interrupts the thread */
  width: fit-content;
  max-width: 28ch;
  margin-left: auto;
  margin-right: auto;
}
.seq--cross .seq__only[data-only="1"] {
  background: var(--white);
  padding: 0.18em 0.45em;
  left: 50%;
  right: auto;
  transform: translate3d(-50%, 16px, 0);
  white-space: nowrap;
}
.seq--cross .seq__only[data-only="1"].is-on { transform: translate3d(-50%, 0, 0); }

/* ─── Sticky sequences (scroll-driven, JS sets data-current) ────────────── */

.seq {
  position: relative;
  height: 220vh;
}
.seq[data-steps="1"] { height: 200vh; }
.seq[data-steps="2"] { height: 170vh; }
.seq[data-steps="8"] { height: 300vh; }

.seq__inner {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 var(--gutter);
}
.seq__inner--left {
  align-items: flex-start;
  text-align: left;
}

/* accumulating lines */
.seq__line {
  opacity: 0;
  transform: translate3d(0, 20px, 0);
  transition: opacity 1.1s var(--ease), transform 1.1s var(--ease);
  will-change: opacity, transform;
}
.seq__line.is-on { opacity: 1; transform: none; }

/* crossfade (only one visible) */
.seq__only {
  position: absolute;
  left: var(--gutter);
  right: var(--gutter);
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
}
.seq__only.is-on { opacity: 1; transform: none; }

/* Europe */
.seq--europe .seq__headline {
  max-width: 16ch;
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition: opacity 1.3s var(--ease), transform 1.3s var(--ease);
}
.seq--europe[data-current] .seq__headline { opacity: 1; transform: none; }
.seq--europe .seq__body {
  margin-top: clamp(2rem, 6vh, 4rem);
  max-width: 58ch;
}

/* word-by-word */
.words .w {
  display: inline-block;
  opacity: 0;
  transform: translate3d(0, 0.35em, 0);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.words .w.on { opacity: 1; transform: none; }

/* stacked statements */
.seq--stack .seq__inner--left > * + * { margin-top: 0.7em; }
.seq--stack .seq__line { max-width: 24ch; }

/* values — words gather one beneath another */
.seq--values .seq__inner > * + * { margin-top: 0.15em; }

/* believe — thought completes itself */
.seq--believe .seq__inner--left > * + * { margin-top: 0.7em; }
.seq--believe .seq__line { display: inline-block; }
.seq--believe .seq__line--tail { font-style: italic; font-weight: 300; }

/* ─── Seal ───────────────────────────────────────────────────────────────── */

.seal {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 var(--gutter);
}
.seal__space { height: 28vh; }

.seal__brand {
  font-weight: 300;
  font-size: clamp(2.8rem, 12vw, 14rem);
  letter-spacing: 0.12em;
  margin-right: -0.12em;
  line-height: 1;
}
.seal__brand.reveal[data-fx="tracking"] { letter-spacing: 0.3em; margin-right: -0.3em; }
.seal__brand.reveal[data-fx="tracking"].in { letter-spacing: 0.12em; margin-right: -0.12em; }

.seal__claim {
  margin-top: clamp(3rem, 9vh, 7rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  font-family: var(--sans);
  font-size: clamp(0.78rem, 1.3vw, 1.1rem);
  letter-spacing: 0.42em;
  text-transform: uppercase;
  font-weight: 500;
}
.seal__claim .rule { transform-origin: center; }
.seal__claim p { margin-right: -0.42em; }
.seal__claim .rule:first-child { margin-bottom: 1.4rem; }
.seal__claim .rule:last-child  { margin-top: 1.4rem; }
.seal__claim p:nth-of-type(1) { transition-delay: 0.25s; }
.seal__claim p:nth-of-type(2) { transition-delay: 0.5s; }
.seal__claim p:nth-of-type(3) { transition-delay: 0.75s; }

/* ─── Footer ─────────────────────────────────────────────────────────────── */

.site-footer {
  padding: 12vh var(--gutter) 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.4rem;
  text-align: center;
}
.site-footer__brand {
  font-weight: 400;
  font-size: 1rem;
  letter-spacing: 0.24em;
  margin-right: -0.24em;
}
.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.1rem;
  font-family: var(--sans);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}
.site-footer__nav a,
.site-footer__lang { opacity: 0.55; transition: opacity 0.3s; letter-spacing: inherit; text-transform: inherit; }
.site-footer__nav a:hover,
.site-footer__lang:hover { opacity: 1; }
.site-footer__nav span { opacity: 0.35; }
.site-footer__copy {
  font-family: var(--sans);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  color: var(--grey);
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  :root { --gutter: clamp(1.4rem, 6vw, 4rem); }
  .site-header { padding: 1.2rem var(--gutter); }
  .site-header__nav { gap: 1.4rem; }
  .scene { padding: 10vh var(--gutter); }
  .scene--tall { min-height: 92vh; }
  .scene--right > *, .scene--left > *, .scene--top-left > * { max-width: 100%; }
  .scene--center > .t-xl { max-width: 10ch; }
  .seq { height: 200vh; }
  .seq[data-steps="8"] { height: 260vh; }
  .seq--europe .seq__body { max-width: 100%; }
  .seq__only { left: var(--gutter); right: var(--gutter); text-align: center; }
  .seq--cross .seq__only[data-only="1"] { white-space: normal; max-width: calc(100vw - 2 * var(--gutter)); }
}

@media (max-width: 560px) {
  .t-xl { font-size: clamp(2.6rem, 15vw, 5rem); line-height: 1; }
  .t-l  { font-size: clamp(2.1rem, 11vw, 4rem); }
  .t-m  { font-size: clamp(1.45rem, 6.4vw, 2.2rem); }
  .t-s  { font-size: 1.05rem; }
  .site-header__link { display: none; }
  .rail { right: 0.85rem; padding: 12vh 0 12vh; }
  .rail__label { display: none; }
  .lang-modal__list { grid-template-columns: 1fr; padding-top: 2vh; }
  .lang-modal__list button { font-size: 1.35rem; }
  .hero__brand { letter-spacing: 0.1em; margin-right: -0.1em; }
  .hero__hint { bottom: 1.6rem; }
  .hero__hint-line { height: 36px; }
  .scene--bottom-right { align-items: flex-end; }
  .seal__claim { letter-spacing: 0.3em; }
  .seal__claim p { margin-right: -0.3em; }
  .site-footer__nav { gap: 0.8rem 0.7rem; }
}

/* ─── Reduced motion ─────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__hint-line { animation: none; transform: none; }
  .loader { transition: opacity 0.4s linear, visibility 0s linear 0.4s; }
  .loader__brand { animation-duration: 0.4s; transition: none; }
  .site-header, .hero__brand, .hero__tagline, .hero__hint,
  .reveal, .seq__line, .seq__only, .seq--europe .seq__headline, .words .w {
    transition-duration: 0.35s;
    transition-delay: 0s !important;
    transform: none !important;
    letter-spacing: inherit;
  }
  .reveal[data-fx="mask"] { clip-path: none; }
  .seq--cross .seq__only[data-only="1"] { transform: translate3d(-50%, 0, 0) !important; }
  .reveal[data-fx="tracking"],
  .seal__brand.reveal[data-fx="tracking"] { letter-spacing: 0.12em; }
  .rail, .rail__label { transition: none; transform: none; }
  .lang-modal { transition: opacity 0.2s linear; }
  .lang-modal__list button { transition: none; transform: none; }
}

body.modal-open { overflow: hidden; }

/* ─── Legal pages (Impressum, Datenschutz) ──────────────────────────────── */

.page-legal .site-header { position: absolute; }
.page-legal .site-header__link { display: inline; }

.legal {
  max-width: calc(62ch + 2 * var(--gutter));   /* border-box: keep the gutter outside the measure */
  margin: 0 auto;
  padding: clamp(9rem, 22vh, 14rem) var(--gutter) 6rem;
  font-size: clamp(1.1rem, 1.35vw, 1.3rem);
  line-height: 1.55;
  font-weight: 400;
}
.legal__title {
  font-weight: 300;
  font-size: clamp(2.8rem, 7vw, 6rem);
  line-height: 1;
  letter-spacing: -0.01em;
  margin: 0 0 2.5rem;
}
.legal__lead {
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  line-height: 1.4;
  font-weight: 300;
  margin-bottom: 3.5rem;
}
.legal section { margin-top: 3rem; }
.legal h2 {
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  margin: 0 0 1rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--black);
}
.legal p { margin: 0 0 1rem; }
.legal ul { margin: 0 0 1rem; padding-left: 1.2em; }
.legal li { margin-bottom: 0.3rem; }
.legal strong { font-weight: 500; }
.legal a { text-decoration: underline; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
.legal__back {
  margin-top: 4rem;
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}
.legal__back a { text-decoration: none; }
.page-legal .site-footer { padding-top: 4rem; }