/* Built Differently: a confidential dossier opened at night in Zurich.
   Near-black desk, brass-lamp gold, aged paper, one red stamp. Dark only, by design. */

@font-face {
  font-family: "EB Garamond";
  src: url("fonts/EBGaramond.woff2") format("woff2");
  font-weight: 400 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "EB Garamond";
  src: url("fonts/EBGaramond-Italic.woff2") format("woff2");
  font-weight: 400 800;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Oswald";
  src: url("fonts/Oswald.woff2") format("woff2");
  font-weight: 200 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Playfair Display";
  src: url("fonts/PlayfairDisplay.woff2") format("woff2");
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Playfair Display";
  src: url("fonts/PlayfairDisplay-Italic.woff2") format("woff2");
  font-weight: 400 900;
  font-style: italic;
  font-display: swap;
}

:root {
  --bd-bg: #0e1013;
  --bd-ink: #efe8da;
  --bd-muted: #cfc7b7;
  --bd-gold: #c9a227;
  --bd-gold-hi: #e0be4a;
  --bd-stamp: #d0574a;
  --bd-paper-ink: #3a2f14;
  --bd-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --bd-body: "EB Garamond", Georgia, "Times New Roman", serif;
  --bd-label: Oswald, "Arial Narrow", "Helvetica Neue", sans-serif;
  --bd-header-h: 64px;
  color-scheme: dark;
}

html {
  scroll-behavior: smooth;
  background: var(--bd-bg);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bd-bg);
  color: var(--bd-ink);
  font-family: var(--bd-body);
}

img {
  max-width: 100%;
}

.bd-site {
  overflow-x: clip;
}

.bd-site [id] {
  scroll-margin-top: calc(var(--bd-header-h) + 8px);
}

.bd-site a:focus-visible,
.bd-site button:focus-visible {
  outline: 2px solid var(--bd-gold);
  outline-offset: 3px;
}

.bd-skip {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 60;
  padding: 10px 14px;
  background: var(--bd-gold);
  color: var(--bd-bg);
  font-family: var(--bd-label);
  letter-spacing: 0.12em;
  text-decoration: none;
}
.bd-skip:focus {
  top: calc(env(safe-area-inset-top, 0px) + 8px);
}

/* ---------- header ---------- */
.bd-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-sizing: border-box;
  min-height: calc(var(--bd-header-h) + env(safe-area-inset-top, 0px));
  padding: env(safe-area-inset-top, 0px) max(16px, env(safe-area-inset-right, 0px)) 0
    max(16px, env(safe-area-inset-left, 0px));
  background: color-mix(in srgb, var(--bd-bg) 84%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--bd-gold) 18%, transparent);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.bd-brand {
  display: flex;
  align-items: center;
  min-height: 44px;
  color: var(--bd-gold);
  font-family: var(--bd-label);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-decoration: none;
  text-transform: uppercase;
}

.bd-nav {
  display: flex;
  align-items: center;
  gap: 4px 28px;
  font-family: var(--bd-label);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.bd-nav > a:not(.bd-cta-header) {
  display: none;
  align-items: center;
  min-height: 44px;
  color: var(--bd-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.bd-nav > a:not(.bd-cta-header):hover {
  color: var(--bd-ink);
}

.bd-cta-header {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px 0 calc(14px + 0.18em);
  background: var(--bd-gold);
  color: var(--bd-bg);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-decoration: none;
  transition: background 0.2s;
}
.bd-cta-header:hover {
  background: var(--bd-gold-hi);
}

@media (min-width: 768px) {
  .bd-header {
    padding-right: max(clamp(20px, 4vw, 48px), env(safe-area-inset-right, 0px));
    padding-left: max(clamp(20px, 4vw, 48px), env(safe-area-inset-left, 0px));
  }
  .bd-brand {
    font-size: 13px;
    letter-spacing: 0.4em;
  }
  .bd-nav > a:not(.bd-cta-header) {
    display: flex;
  }
  .bd-cta-header {
    min-height: 44px;
    padding: 0 20px 0 calc(20px + 0.24em);
    font-size: 12px;
    letter-spacing: 0.24em;
  }
}

/* ---------- the journey: scroll plays the film ---------- */
.journey {
  position: relative;
  background: var(--bd-bg);
}

.journey__stage {
  position: sticky;
  top: 0;
  z-index: 0;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: var(--bd-bg);
}

.journey__media {
  position: absolute;
  inset: 0;
}

.journey__media img,
.journey__media video {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.journey__media video {
  opacity: 0;
  transition: opacity 0.3s;
}
.journey.is-live .journey__media video {
  opacity: 1;
}

.journey__shade {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 45%, transparent 45%, rgba(14, 16, 19, 0.5) 100%),
    linear-gradient(to bottom, rgba(14, 16, 19, 0.45) 0%, transparent 20%, transparent 72%, var(--bd-bg) 100%);
  pointer-events: none;
}

.journey__progress {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: color-mix(in srgb, var(--bd-ink) 12%, transparent);
}
.journey__progress span {
  display: block;
  height: 100%;
  background: var(--bd-gold);
  transform: scaleX(var(--p, 0));
  transform-origin: left center;
}

.journey__route {
  position: absolute;
  z-index: 3;
  top: calc(var(--bd-header-h) + env(safe-area-inset-top, 0px) + 12px);
  right: clamp(16px, 4vw, 48px);
  display: flex;
  gap: 2px;
}
.journey__route button {
  min-height: 44px;
  padding: 0.6rem 0.85rem;
  border: 0;
  background: transparent;
  color: var(--bd-muted);
  font-family: var(--bd-label);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  cursor: pointer;
}
.journey__route button:hover,
.journey__route button[aria-current="step"] {
  color: var(--bd-ink);
}
.journey__route button[aria-current="step"] {
  text-decoration: underline;
  text-decoration-color: var(--bd-gold);
  text-decoration-thickness: 0.15em;
  text-underline-offset: 0.35em;
}

.journey__story {
  position: relative;
  z-index: 2;
  margin-top: -100vh;
  margin-top: -100dvh;
  pointer-events: none;
}

.chapter {
  position: relative;
}

.chapter__pin {
  position: sticky;
  top: 0;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: calc(var(--bd-header-h) + 56px) max(clamp(20px, 6vw, 96px), env(safe-area-inset-right, 0px)) 64px
    max(clamp(20px, 6vw, 96px), env(safe-area-inset-left, 0px));
}
.chapter[data-align="right"] .chapter__pin {
  justify-content: flex-end;
}

.chapter__copy {
  position: relative;
  width: min(40rem, 48vw);
  pointer-events: auto;
}
.chapter[data-align="right"] .chapter__copy {
  width: min(34rem, 40vw);
}
.chapter__copy::before {
  position: absolute;
  z-index: -1;
  inset: -3rem -5rem;
  content: "";
  background: radial-gradient(
    ellipse at center,
    color-mix(in srgb, var(--bd-bg) 88%, transparent) 0%,
    color-mix(in srgb, var(--bd-bg) 58%, transparent) 52%,
    transparent 76%
  );
  pointer-events: none;
}

.chapter__kicker {
  max-width: 40ch;
  margin: 0 0 1rem;
  color: var(--bd-gold);
  font-family: var(--bd-label);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.3em;
  line-height: 1.6;
  text-transform: uppercase;
}

.chapter__title {
  max-width: 17ch;
  margin: 0;
  color: var(--bd-ink);
  font-family: var(--bd-display);
  font-size: clamp(2.2rem, 3.6vw, 3.9rem);
  font-weight: 400;
  line-height: 1.1;
  text-wrap: balance;
}

.chapter__body {
  max-width: 40ch;
  margin: 1.5rem 0 0;
  color: var(--bd-muted);
  font-family: var(--bd-body);
  font-size: clamp(1.15rem, 1.45vw, 1.35rem);
  line-height: 1.55;
}

.chapter__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}
.chapter__tags li {
  padding: 0.45rem 0.7rem;
  border: 1px solid color-mix(in srgb, var(--bd-gold) 45%, transparent);
  color: var(--bd-ink);
  font-family: var(--bd-label);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.chapter__actions {
  margin-top: 2rem;
}

/* chapter 1 is the cover plate: stamp, caps, letter-spaced */
#akte .chapter__title {
  max-width: 11ch;
  font-size: clamp(2.6rem, 5.2vw, 5.6rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.bd-stamp {
  display: table;
  margin: 0 0 0.9rem;
  padding: 0.4em 0.8em 0.32em calc(0.8em + 0.42em);
  border: 2px solid var(--bd-stamp);
  color: var(--bd-stamp);
  font-family: var(--bd-label);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  transform: rotate(-4deg);
}
#akte .chapter__body {
  font-size: clamp(1.2rem, 1.7vw, 1.5rem);
  font-style: italic;
}

.bd-akte-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.bd-cta-akte {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 28px 0 calc(28px + 0.22em);
  background: var(--bd-gold);
  box-shadow: 0 16px 40px -22px var(--bd-gold);
  color: var(--bd-bg);
  font-family: var(--bd-label);
  font-size: 15px;
  letter-spacing: 0.22em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background 0.2s, transform 0.2s;
}
.bd-cta-akte:hover {
  background: var(--bd-gold-hi);
  transform: translateY(-1px);
}

.bd-akte-note {
  margin: 0;
  color: var(--bd-muted);
  font-family: var(--bd-label);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  line-height: 1.6;
  text-transform: uppercase;
}

.bd-open-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
}

.bd-cta-open {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-height: 52px;
  padding: 0 22px 0 calc(22px + 0.22em);
  border: 1px solid var(--bd-gold);
  background: color-mix(in srgb, var(--bd-bg) 72%, transparent);
  color: var(--bd-gold);
  font-family: var(--bd-label);
  font-size: 14px;
  letter-spacing: 0.22em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
}
.bd-cta-open::after {
  content: "\2192";
  letter-spacing: 0;
  transition: transform 0.2s;
}
.bd-cta-open:hover {
  background: var(--bd-gold);
  color: var(--bd-bg);
}
.bd-cta-open:hover::after {
  transform: translateX(3px);
}

.bd-link-inhalt {
  color: var(--bd-ink);
  font-family: var(--bd-body);
  font-size: 18px;
  font-style: italic;
  text-decoration: underline;
  text-decoration-color: var(--bd-gold);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.3em;
}

@media (max-width: 860px) {
  .journey__route {
    display: none;
  }
  /* portrait phones: lift the film so the book sits above the chapter copy */
  .journey__media {
    transform: translateY(-19%);
  }
  .chapter__pin,
  .chapter[data-align="right"] .chapter__pin {
    align-items: flex-end;
    justify-content: flex-start;
    padding: 6.5rem max(1.25rem, env(safe-area-inset-right, 0px)) calc(3.5rem + env(safe-area-inset-bottom, 0px))
      max(1.25rem, env(safe-area-inset-left, 0px));
  }
  .chapter__copy,
  .chapter[data-align="right"] .chapter__copy {
    width: min(100%, 36rem);
  }
  .chapter__copy::before {
    inset: -3rem -2rem;
    background: linear-gradient(
      to top,
      transparent 0%,
      var(--bd-bg) 14%,
      color-mix(in srgb, var(--bd-bg) 82%, transparent) 60%,
      transparent 100%
    );
  }
  .chapter__kicker {
    margin-bottom: 0.7rem;
    font-size: 10.5px;
    letter-spacing: 0.24em;
  }
  .chapter__title {
    max-width: 14ch;
    font-size: clamp(1.9rem, 7.6vw, 2.7rem);
  }
  #akte .chapter__title {
    font-size: clamp(2.1rem, 9.6vw, 3rem);
  }
  .bd-stamp {
    margin-bottom: 0.7rem;
    font-size: 12px;
  }
  .chapter__body {
    margin-top: 1rem;
    font-size: 1.12rem;
  }
  .chapter__actions {
    margin-top: 1.25rem;
  }
  .bd-cta-akte {
    min-height: 50px;
    font-size: 14px;
  }
}

/* ---------- the sections after the film ---------- */
.bd-variant a {
  color: var(--bd-gold);
}

.bd-variant--mobile {
  max-width: 430px;
  margin: 0 auto;
}

.bd-variant--desktop {
  display: none;
}

@media (min-width: 768px) {
  .bd-variant--mobile {
    display: none;
  }
  .bd-variant--desktop {
    display: block;
  }
}

.kauf-hinweis {
  margin: 4px 0 0;
  color: var(--bd-paper-ink);
  font-family: var(--bd-label);
  font-size: 13px;
  letter-spacing: 0.08em;
  line-height: 1.6;
}
.kauf-hinweis span {
  -webkit-user-select: all;
  user-select: all;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .bd-cta-akte,
  .bd-cta-open,
  .bd-cta-open::after,
  .journey__media video {
    transition: none;
  }
}