/* =========================================================
   Broad Economy — Stylesheet
   Gestaltung nach Braun / Dieter Rams: neutrale Grautöne,
   ein einziger Signalton, Hairlines, strenges Raster.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

:root {
  /* Farben */
  --paper:      #F2F1EE;   /* Braun-Gehäuseweiß */
  --paper-alt:  #EAE9E5;
  --ink:        #121211;
  --graphite:   #5B5B55;
  --hairline:   #D8D6D0;
  --signal:     #E1521D;   /* E1521D Braun-Orange, sparsam eingesetzt */

  /* Maße */
  --max:      1180px;
  --gutter:   clamp(20px, 5vw, 64px);
  --header-h: 64px;
  --scale-h:  34px;

  /* Bewegung */
  --ease: cubic-bezier(.22, .68, .18, 1);
  --dur:  .7s;
}

/* ---------------------------------------------------------
   Darkmode — folgt automatisch der Systemeinstellung
   Gleiche Logik wie hell, nur die Werte der Variablen
   werden getauscht. Der Rest der Datei bleibt unberührt.
   --------------------------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --paper:      #141311;   /* Gehäuseschwarz statt -weiß */
    --paper-alt:  #1D1C19;
    --ink:        #F2F1EE;
    --graphite:   #9C9A91;
    --hairline:   #333129;
    --signal:     #ff4500;   /* FF7A45 etwas heller für Kontrast auf Dunkel */
  }
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; color-scheme: light dark; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

::selection { background: var(--signal); color: #fff; }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 12px 18px;
  z-index: 100;
  font-size: 13px;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------------------------------------------------------
   Typografie
   --------------------------------------------------------- */

h1, h2, h3 { font-weight: 500; margin: 0; letter-spacing: -0.035em; line-height: 1.04; }

.display {
  font-size: clamp(2.9rem, 9.5vw, 7rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.9rem);
  letter-spacing: -0.038em;
  line-height: 1.06;
}

.h3 {
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.35;
}

.lead {
  margin: 0;
  font-size: clamp(1.0625rem, 1.7vw, 1.3125rem);
  line-height: 1.5;
  font-weight: 300;
  color: var(--graphite);
  letter-spacing: -0.015em;
  max-width: 34ch;
}

.label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
  font-variant-numeric: tabular-nums;
}

.body-sm { font-size: 0.9375rem; line-height: 1.65; color: var(--graphite); }

/* ---------------------------------------------------------
   Kopfzeile
   --------------------------------------------------------- */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--hairline);
}

.header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; gap: 11px; }
.brand__mark { height: 21px; width: auto; }
.brand__name {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav { display: flex; align-items: center; gap: clamp(18px, 3vw, 34px); }

.nav a {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite);
  position: relative;
  padding-block: 6px;
  transition: color .3s var(--ease);
}
.nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after,
.nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { color: var(--ink); }

/* ---------------------------------------------------------
   Signature: Skalenband (Instrumentenskala à la Braun-Dial)
   Zeigt Scrollposition und aktuellen Abschnitt.
   --------------------------------------------------------- */

.scale {
  position: sticky;
  top: var(--header-h);
  z-index: 49;
  height: var(--scale-h);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--hairline);
  overflow: hidden;
}

.scale__inner {
  position: relative;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2px;
}

.scale__tick {
  flex: 1 1 0;
  height: 5px;
  background: var(--hairline);
  transform-origin: bottom;
  transition: height .45s var(--ease), background .45s var(--ease);
  max-width: 3px;
}
.scale__tick--major { height: 9px; }
.scale__tick--on  { background: var(--graphite); }
.scale__tick--head { background: var(--signal); height: 17px; }

.scale__label {
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  padding-left: 14px;
  background: linear-gradient(90deg, transparent, var(--paper) 22%);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
}

/* ---------------------------------------------------------
   Abschnitte
   --------------------------------------------------------- */

.section { padding-block: clamp(76px, 11vw, 148px); }
.section--tight { padding-block: clamp(56px, 7vw, 92px); }
.section + .section { border-top: 1px solid var(--hairline); }

.section__head > * { margin: 0; }

.section__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: clamp(34px, 5vw, 62px);
}

/* Hero */

.hero {
  min-height: clamp(560px, 78vh, 860px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: clamp(72px, 12vh, 132px) clamp(56px, 8vh, 96px);
}

.hero__eyebrow { margin: 0 0 clamp(26px, 4vw, 44px); }

.hero__title { margin-bottom: clamp(26px, 3.4vw, 40px); }
.hero__title em {
  font-style: normal;
  color: var(--signal);
}

.hero__meta {
  margin: clamp(48px, 8vw, 96px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 22px 30px;
}
.hero__meta dt { margin-bottom: 5px; }
.hero__meta dd { margin: 0; font-size: 0.9375rem; letter-spacing: -0.01em; }

/* Raster für Inhaltsblöcke */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  gap: 1px;
  background: var(--hairline);
  border-block: 1px solid var(--hairline);
}
.grid-3 > .cell {
  background: var(--paper);
  padding: clamp(28px, 3.4vw, 44px) clamp(22px, 2.6vw, 34px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background .5s var(--ease);
}
.grid-3 > .cell:hover { background: var(--paper-alt); }
.grid-3 > .cell p { margin: 0; }
.cell__index {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}

/* Zweispaltiges Textlayout */

.cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 60px);
}
@media (min-width: 860px) {
  .cols { grid-template-columns: minmax(0, 4fr) minmax(0, 6fr); align-items: start; }
  .section__head { grid-template-columns: minmax(0, 4fr) minmax(0, 6fr); gap: 30px; }
}

/* Kontakt */

.contact__mail {
  display: inline-block;
  font-size: clamp(1.5rem, 4.6vw, 3rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.1;
  position: relative;
}
.contact__mail::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%; height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .55s var(--ease), background .55s var(--ease);
}
.contact__mail:hover::after { transform: scaleX(1); background: var(--signal); }

/* Coming-soon (Über uns) */

.soon {
  min-height: calc(100vh - var(--header-h) - var(--scale-h) - 180px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: clamp(80px, 14vh, 160px);
}
.soon__status {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
}
.soon__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--signal);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1;   transform: scale(1); }
  50%      { opacity: .32; transform: scale(.82); }
}

/* ---------------------------------------------------------
   Bücher (Projekte)
   --------------------------------------------------------- */

.book {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}
@media (min-width: 760px) {
  .book { grid-template-columns: minmax(180px, 260px) 1fr; }
  .book--reverse { grid-template-columns: 1fr minmax(180px, 260px); }
  .book--reverse .book__cover { order: 2; }
  .book--reverse .book__text  { order: 1; }
}

.book__cover img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 18px 34px rgba(18, 18, 17, 0.16));
}
@media (prefers-color-scheme: dark) {
  .book__cover img { filter: drop-shadow(0 18px 34px rgba(0, 0, 0, 0.45)); }
}

.book__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 3px;
  transition: color .3s var(--ease), border-color .3s var(--ease), gap .3s var(--ease);
}
.book__link:hover { color: var(--signal); border-color: var(--signal); gap: 12px; }

/* Kompakte Buch-Teaser (z. B. auf der Startseite) */

.book-teaser {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}
@media (min-width: 620px) {
  .book-teaser { grid-template-columns: repeat(2, 1fr); }
}
.book-teaser__item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px;
  border: 1px solid var(--hairline);
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.book-teaser__item:hover { border-color: var(--graphite); background: var(--paper-alt); }
.book-teaser__item img {
  width: 64px;
  height: auto;
  flex: none;
  filter: drop-shadow(0 8px 16px rgba(18, 18, 17, 0.14));
}
.book-teaser__item h3 { font-size: 0.9375rem; margin-bottom: 4px; }
.book-teaser__item p { margin: 0; font-size: 0.8125rem; color: var(--graphite); }

/* ---------------------------------------------------------
   Rechtstexte
   --------------------------------------------------------- */

.legal { padding-block: clamp(56px, 8vw, 104px) clamp(72px, 10vw, 128px); }

.legal__index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding-bottom: 26px;
  margin-bottom: clamp(44px, 6vw, 76px);
  border-bottom: 1px solid var(--hairline);
}
.legal__index a {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite);
  transition: color .3s var(--ease);
}
.legal__index a:hover { color: var(--signal); }

.legal-block { padding-block: clamp(34px, 4.5vw, 58px); border-top: 1px solid var(--hairline); scroll-margin-top: calc(var(--header-h) + var(--scale-h) + 24px); }
.legal-block:first-of-type { border-top: 0; padding-top: 0; }

.legal-block h2 { margin-bottom: 22px; }
.legal-block h3 {
  font-size: 1rem;
  font-weight: 500;
  margin: 30px 0 8px;
  letter-spacing: -0.015em;
}
.legal-block p,
.legal-block li {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--graphite);
  max-width: 68ch;
}
.legal-block p { margin: 0 0 14px; }
.legal-block ul { margin: 0 0 14px; padding-left: 18px; }
.legal-block li { margin-bottom: 5px; }
.legal-block a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; text-decoration-color: var(--hairline); transition: text-decoration-color .3s var(--ease); }
.legal-block a:hover { text-decoration-color: var(--signal); }

.data-list { margin: 0; }
.data-list div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
}
@media (min-width: 700px) {
  .data-list div { grid-template-columns: 200px 1fr; gap: 24px; align-items: baseline; }
}
.data-list dt { font-size: 11px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--graphite); }
.data-list dd { margin: 0; font-size: 0.9375rem; letter-spacing: -0.01em; }

/* ---------------------------------------------------------
   Fußzeile
   --------------------------------------------------------- */

.footer {
  border-top: 1px solid var(--hairline);
  padding-block: clamp(40px, 5vw, 64px);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 26px 40px;
  align-items: flex-start;
  justify-content: space-between;
}
.footer__nav { display: flex; flex-wrap: wrap; gap: 8px 26px; }
.footer__nav a {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite);
  transition: color .3s var(--ease);
}
.footer__nav a:hover { color: var(--signal); }
.footer__note { font-size: 12px; color: var(--graphite); letter-spacing: 0; }

/* ---------------------------------------------------------
   Bewegung
   --------------------------------------------------------- */

/* Einblenden beim Laden — gestaffelt */
.rise {
  opacity: 0;
  transform: translateY(14px);
  animation: rise var(--dur) var(--ease) forwards;
}
@keyframes rise {
  to { opacity: 1; transform: none; }
}
.d1 { animation-delay: .05s; }
.d2 { animation-delay: .15s; }
.d3 { animation-delay: .27s; }
.d4 { animation-delay: .39s; }
.d5 { animation-delay: .51s; }

/* Hairline zeichnet sich */
.rule {
  height: 1px;
  background: var(--hairline);
  transform: scaleX(0);
  transform-origin: left;
  animation: draw 1.1s var(--ease) .2s forwards;
}
@keyframes draw { to { transform: scaleX(1); } }

/* Beim Scrollen einblenden */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .85s var(--ease), transform .85s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .09s; }
.reveal[data-delay="2"] { transition-delay: .18s; }
.reveal[data-delay="3"] { transition-delay: .27s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .rise, .reveal { opacity: 1; transform: none; }
  .rule { transform: none; }
}