/* ── Local font: Nunito ── */
@font-face {
  font-family: 'Nunito';
  src: url('/fonts/nunito-v32-latin-200.woff2') format('woff2');
  font-weight: 200;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/fonts/nunito-v32-latin-regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito';
  src: url('/fonts/nunito-v32-latin-700.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ==========================================
   mozartforschung.de — Design 3.0
   Minimal academic · inspired by detroit.paris
   ========================================== */

/* ── Custom Properties ── */
:root {
  --black:     #0d0d0b;
  --maroon:    #800000;
  --white:     #ffffff;
  --gray-100:  #f0ede7;
  --gray-200:  #ddd9d2;
  --gray-400:  #aaa69e;
  --gray-600:  #6b6760;
  --nav-h:     56px;

  --font-display: 'Nunito', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-serif:   'Nunito', sans-serif;
  --font-ui:      'Nunito', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --max-w:    1140px;
  --text-w:   720px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-serif);
  background: var(--white);
  color: var(--black);
  font-size: 1.0625rem;
  line-height: 1.75;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }

/* ── Skip link ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--black);
  color: #fff;
  padding: 0.5rem 1rem;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  z-index: 9999;
}
.skip-link:focus { top: 0; }

/* ==========================================
   Navigation
   ========================================== */
.site-nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 200;
  height: var(--nav-h);
  background: var(--maroon);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  gap: 2rem;
}

.site-nav__brand {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: #fff;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.site-nav__links {
  margin-inline-start: auto;
  list-style: none;
  display: flex;
  gap: 2.25rem;
}
.site-nav__links a {
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color 0.2s;
}
.site-nav__links a:hover { color: #fff; }

.site-nav__toggle {
  display: none;
  margin-inline-start: auto;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.35rem;
  color: #fff;
  line-height: 0;
}

/* ==========================================
   Hero Header
   ========================================== */
.site-hero {
  margin-top: var(--nav-h);
  overflow: hidden;
  position: relative;
}
.site-hero img {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(15%) contrast(1.05);
}
.site-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 55%, rgba(13, 13, 11, 0.3) 100%);
  pointer-events: none;
}

/* Dark page header (for sub-pages without hero image) */
.page-header {
  margin-top: var(--nav-h);
  background: var(--black);
  padding: 2.75rem 2rem 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 300;
  color: #fff;
  max-width: var(--max-w);
  margin: 0 auto;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* ==========================================
   Layout helpers
   ========================================== */
.container {
  max-width: var(--text-w);
  margin-inline: auto;
  padding-inline: 2rem;
}

/* ==========================================
   Card Gallery — scroll-driven diagonal zoom
   Cards travel along a path: lower-left (tiny) → upper-right (large).
   JS controls position + scale individually per card.
   ========================================== */

.gallery-section {
  height: calc(100vh - var(--nav-h));
  background: var(--white);
}

/* Füllt die Gallery-Section vollständig; kein Sticky mehr nötig */
.gallery-sticky {
  position: relative;
  height: 100%;
  overflow: hidden;
}
.gallery-sticky--bg {
  background-image: url('/images/mf-kv1a.jpg');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}

/* Hero title overlay */
.gallery-hero-title {
  position: absolute;
  left: 0;
  top: 20%;
  z-index: 10;
  pointer-events: none;
  background: rgba(255,255,255,0.6);
  padding: 1.25rem 2.5rem 1.25rem 10%;
}
.gallery-hero-title__main {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 700;
  color: var(--maroon);
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.gallery-hero-title__sub {
  font-family: var(--font-ui);
  font-size: clamp(0.875rem, 1.6vw, 1.25rem);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--maroon);
  margin-top: 0.6rem;
  display: block;
}

/* Mobile: header über den Cards */
@media (max-width: 820px) {
  .gallery-hero-title {
    position: static;
    padding: 2rem 1rem 0;
    pointer-events: auto;
  }
}

/* Label */
.gallery-label {
  position: absolute;
  top: 1.75rem;
  left: 2rem;
  z-index: 10;
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
  pointer-events: none;
}

/* Track: just a container, no layout — cards are absolute */
.gallery-track {
  position: absolute;
  inset: 0;
}

/* ── Individual card ── */
.card {
  position: absolute;
  bottom: 0;
  left: 0;
  /* Feste Basis — JS skaliert nur per transform, kein Reflow */
  width: var(--card-base, 500px);
  height: var(--card-base, 500px);
  transform-origin: bottom left;

  background: rgba(28, 25, 22, 0.5);
  border: 1px solid rgba(255,255,255,0.07);
  color: #fff;
  text-decoration: none;

  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 0;
  overflow: hidden;
  will-change: transform, opacity;

  transition: border-color 0.25s, background 0.25s;
  
}

.card:hover { background: #5c0000; border-color: transparent; }
.card--suggested { background: #7a0000; border-color: rgba(255,255,255,0.15); }
.carousel-moving .card:hover,
.carousel-moving .card--suggested { background: rgba(28, 25, 22, 0.5); border-color: rgba(255,255,255,0.07); }

/* Bild-Slot: 25% der Kartenhöhe, Platzhalter für späteres Bild */
.card__img {
  flex: 0 0 50%;
  min-height: 0;
  background: rgba(255,255,255,0.04);
  overflow: hidden;
}
.card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Text-Bereich: 75% der Kartenhöhe */
.card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2rem 2.25rem 1.5rem;
  transition: opacity 0.35s ease;
}
.carousel-moving .card__body {
  opacity: 0;
  transition: none;
}
.card__cat {
  font-family: var(--font-ui);
  font-size: 1.2rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  display: block;
}
.card__title {
  font-size: 3rem;
  line-height: 1.5em;
  font-weight: 700;
  color: #fff;
  flex: 1;
  display: flex;
  align-items: center;
  margin: 0.5rem 0;
}
.card__sub {
  font-size: 1rem;
  line-height: 1.45;
  color: rgba(255,255,255,0.4);
}
.card__year {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.25);
  display: block;
  margin-top: 0.5rem;
}
.card__arrow {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-size: 1.4rem;
  color: rgba(255,255,255,0.18);
  transition: color 0.2s, transform 0.2s;
  line-height: 1;
}
.card:hover .card__arrow { color: rgba(255,255,255,0.7); transform: translate(3px,-3px); }

/* Scroll hint */
.gallery-scroll-hint {
  position: absolute;
  bottom: 1.5rem;
  right: 2rem;
  z-index: 10;
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.2);
  pointer-events: none;
  animation: hint-pulse 2.5s ease-in-out infinite;
}
@keyframes hint-pulse {
  0%, 100% { opacity: 0.3; }
  50%       { opacity: 0.9; }
}
@media (prefers-reduced-motion: reduce) {
  .gallery-scroll-hint { animation: none; }
}

/* ── Mobile: vertical list ── */
@media (max-width: 820px) {
  .gallery-section { height: auto !important; padding: 2rem 1rem 3rem; }
  .gallery-sticky  { position: static; height: auto; overflow: visible; }
  .gallery-label   { position: static; margin-bottom: 1.5rem; display: block; }
  .gallery-track   { position: static; }
  .card {
    position: static;
    width: 100% !important;
    height: auto !important;
    min-height: 200px;
    transform: none !important;
    transform-origin: unset !important;
    opacity: 1 !important;
    margin-bottom: 1rem;
  }
}

/* ── Database section ── */
.database-section {
  background: var(--black);
  color: #fff;
  padding-block: 5rem;
}
.database-section .section__title { color: #fff; }
.database-section .section__lead {
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 0;
}
.database-section a { color: rgba(255, 255, 255, 0.85); text-decoration: underline; text-decoration-color: rgba(255,255,255,0.25); }
.database-section a:hover { color: #fff; text-decoration-color: rgba(255,255,255,0.7); }

/* ==========================================
   Footer
   ========================================== */
.site-footer {
  background: var(--maroon);
  padding: 2.5rem 2rem;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.site-footer p {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.3);
}

/* ==========================================
   Article Layout (Notenbücher)
   ========================================== */
.article-layout {
  margin-top: var(--nav-h);
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - var(--nav-h));
}

/* ── TOC sidebar ── */
.article-toc {
  background: var(--gray-100);
  border-right: 1px solid var(--gray-200);
  padding: 2.5rem 1.5rem 4rem;
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--gray-200) transparent;
}

.toc__title {
  font-family: var(--font-ui);
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 1.25rem;
}

.toc__list { list-style: none; }
.toc__list li + li { margin-top: 0.2rem; }

.toc-level-1 { margin-top: 1rem; }
.toc-level-1:first-child { margin-top: 0; }
.toc-level-1 > a {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-600);
  text-decoration: none;
  line-height: 1.35;
  display: block;
  transition: color 0.15s;
}
.toc-level-2 { padding-left: 0.875rem; margin-top: 0.2rem; }
.toc-level-2 > a {
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  color: var(--gray-400);
  text-decoration: none;
  line-height: 1.35;
  display: block;
  transition: color 0.15s;
}
.toc__list a:hover { color: var(--black); }
.toc__list a.is-active { color: var(--black); }
.toc-level-1 > a.is-active { font-weight: 700; }

/* Mobile TOC toggle */
.toc-toggle {
  display: none;
  width: 100%;
  background: var(--gray-100);
  border: none;
  border-bottom: 1px solid var(--gray-200);
  padding: 0.875rem 1.5rem;
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: left;
  cursor: pointer;
  color: var(--gray-600);
  position: sticky;
  top: var(--nav-h);
  z-index: 10;
  transition: background 0.15s;
}
.toc-toggle:hover { background: var(--gray-200); }

/* ── Article main content ── */
.article-main {
  padding: 4rem 3.5rem 7rem;
  max-width: 1200px;
}

/* Override beitragsStyles.css defaults */
.article-main .beitrag {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.8;
  width: auto;
  margin: 0;
}

.article-main p.U1-Titel {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 2.8vw, 2.75rem);
  font-weight: 400;
  line-height: 1.15;
  margin-top: 4.5rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
  color: var(--black);
}
.article-main .beitrag > div > p.U1-Titel:first-child { margin-top: 0; }

.article-main p.U2-Titel {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 400;
  line-height: 1.2;
  margin-top: 3.25rem;
  margin-bottom: 0.35rem;
}

.article-main p.U3-Titel {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  margin-top: 2.25rem;
  margin-bottom: 0.25rem;
}

.article-main p.Standard-ohneEinzug,
.article-main p.Standard-mitEinzug {
  text-align: left;
  margin: 0.75rem 0;
  hyphens: auto;
  -webkit-hyphens: auto;
}
.article-main p.Standard-mitEinzug { text-indent: 1.5em; }

.article-main p.zitat {
  margin: 1.75rem 0 1.75rem 1.5rem;
  font-size: 0.9375rem;
  color: var(--gray-600);
  border-left: 2px solid var(--gray-200);
  padding-left: 1.25rem;
  text-align: left;
  line-height: 1.75;
}

.article-main p.Bild-Beschriftung {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  color: var(--gray-600);
  text-align: center;
  width: auto;
  margin: 0.5rem auto 2.5rem;
  line-height: 1.4;
}

.article-main .BibliographischeAngaben { font-style: italic; }

.article-main hr {
  width: 35%;
  margin: 3.5rem 0;
  border: none;
  border-top: 1px solid var(--gray-200);
}

.article-main img {
  width: 75%;
  margin: 2.5rem auto;
  height: auto;
  /* Scroll-reveal initial state */
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.article-main img.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.article-main img.p100 { width: 100%; }
.article-main img.p90  { width: 90%; }
.article-main img.p75  { width: 75%; }
.article-main img.p68  { width: 68%; }
.article-main img.p60  { width: 60%; }
.article-main img.p55  { width: 55%; }
.article-main img.p50  { width: 50%; }
.article-main img.p45  { width: 45%; }
.article-main img.p40  { width: 40%; }
.article-main img.p30  { width: 30%; }
.article-main img.p25  { width: 25%; }

.article-main dl { margin: 1.25rem 0; }
.article-main dt {
  float: left;
  font-weight: 700;
  clear: left;
  min-width: 5.5rem;
  margin-right: 0.75rem;
}
.article-main dd {
  margin-left: 6.5rem;
  margin-bottom: 0.625rem;
}

.article-main ol,
.article-main ul { margin: 1rem 0 1rem 1.5rem; }

.article-main li.Aufz-hlung,
.article-main li.Aufz-hlung-Fortf-hrung,
.article-main li.Aufz-hlung-Ende {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.article-main li.Literatur,
.article-main li.Literatur-2--Ebene { margin: 0.5rem 0; }

.article-main a {
  text-decoration: underline;
  text-decoration-color: var(--gray-200);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}
.article-main a:hover { text-decoration-color: currentColor; }

.article-main a.footnote-link {
  font-size: 0.75em;
  vertical-align: super;
  line-height: 0;
  text-decoration: none;
  color: var(--gray-600);
}
.article-main a.footnote-link:hover { color: var(--black); }

/* Footnotes */
.article-main p.FussnotenZeichen { float: left; }
.article-main p.Fussnote {
  text-align: left;
  margin: 0 0 0.25rem 2.5rem;
  font-size: 0.875rem;
  line-height: 1.6;
}

/* Tables in article */
.article-main table.Tabelle-Statistik {
  width: 90%;
  border-collapse: collapse;
  margin: 1.5rem auto;
  font-size: 0.875rem;
}
.article-main td.Kopfzellen { background: var(--gray-200); }
.article-main td.cell-style-override-1 { background: #e8e5df; }
.article-main td.cell-style-override-2 { background: var(--gray-200); }
.article-main td, .article-main th { padding: 0.375rem 0.5rem; }

/* Ignore Bootstrap grid wrappers */
.article-main .container,
.article-main .row,
.article-main [class*="col-"] { all: unset; display: contents; }

/* ==========================================
   Sub-pages (Impressum, Transition)
   ========================================== */
.subsite-content {
  margin-top: var(--nav-h);
  max-width: 680px;
  margin-inline: auto;
  padding: 4.5rem 2rem 7rem;
}

.subsite-content section { all: unset; display: block; }
.subsite-content .container,
.subsite-content .row,
.subsite-content [class*="col-"] { all: unset; display: block; }

.subsite-content h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  margin-top: 0;
  margin-bottom: 0.75rem;
  line-height: 1.15;
}
.subsite-content h5,
.subsite-content h6 {
  font-family: var(--font-ui);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
}
.subsite-content p {
  font-size: 0.9375rem;
  line-height: 1.8;
  margin-bottom: 0.75rem;
}
.subsite-content a {
  text-decoration: underline;
  text-decoration-color: var(--gray-200);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}
.subsite-content a:hover { text-decoration-color: currentColor; }

/* ── Iframe (Transition page) ── */
.iframe-wrap {
  margin-top: 1.5rem;
  border-top: 1px solid var(--gray-200);
}
.iframe-wrap iframe {
  width: 100%;
  min-height: 900px;
  border: none;
  display: block;
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 820px) {
  /* Nav */
  .site-nav__links {
    display: none;
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    background: var(--black);
    flex-direction: column;
    padding: 2.5rem 2rem;
    gap: 1.75rem;
    z-index: 199;
    overflow-y: auto;
  }
  .site-nav__links.is-open { display: flex; }
  .site-nav__links a {
    font-size: 1.125rem;
    letter-spacing: 0.04em;
    color: rgba(255, 255, 255, 0.75);
  }
  .site-nav__toggle { display: flex; }

  /* Home page */
  .pub-item {
    grid-template-columns: 1.875rem 1fr;
  }
  .pub-year { display: none; }

  /* Article layout */
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-toc {
    display: none;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--gray-200);
    padding: 1.5rem;
    max-height: 60vh;
    overflow-y: auto;
  }
  .article-toc.is-open { display: block; }
  .toc-toggle { display: flex; align-items: center; gap: 0.5rem; }
  .article-main { padding: 2.5rem 1.5rem 5rem; }
}

@media (max-width: 480px) {
  :root { --nav-h: 52px; }
  .section { padding-block: 3.5rem; }
  .section__title { font-size: 2rem; }
  .subsite-content { padding-top: 3rem; }
}