:root {
  --bg: #101112;
  --surface: #181a1d;
  --surface-alt: #202328;
  --ink: #f6f2eb;
  --muted: #f6f2eb;
  --accent: #ff4d21;
  --accent-2: #ffd25b;
  --line: rgba(255, 255, 255, 0.08);
  --card-surface-top: rgba(255, 255, 255, 0.07);
  --card-surface-bottom: rgba(255, 255, 255, 0.03);
  --card-border: rgba(255, 255, 255, 0.14);
  --tile-bg: linear-gradient(180deg, #fffdf8 0%, #f0ece4 100%);
  --tile-border: rgba(255, 255, 255, 0.08);
  --social-bg: rgba(255, 255, 255, 0.03);
  --hero-overlay-a: rgba(10, 10, 11, 0.92);
  --hero-overlay-b: rgba(10, 10, 11, 0.55);
  --hero-overlay-c: rgba(255, 77, 33, 0.24);
  --bg-glow: rgba(255, 77, 33, 0.24);
  --bg-start: #0c0d0e;
}

html[data-theme="light"] {
  --bg: #f1eadb;
  --surface: #fbf6ed;
  --surface-alt: #f4ead7;
  --ink: #1a1d1f;
  --muted: #1a1d1f;
  --accent: #cf431d;
  --accent-2: #8f5a1f;
  --line: rgba(26, 29, 31, 0.1);
  --card-surface-top: rgba(255, 255, 255, 0.92);
  --card-surface-bottom: rgba(234, 220, 192, 0.9);
  --card-border: rgba(26, 29, 31, 0.14);
  --tile-bg: linear-gradient(180deg, #fffaf1 0%, #f3e8d3 100%);
  --tile-border: rgba(26, 29, 31, 0.08);
  --social-bg: rgba(26, 29, 31, 0.03);
  --hero-overlay-a: rgba(255, 248, 235, 0.76);
  --hero-overlay-b: rgba(255, 248, 235, 0.26);
  --hero-overlay-c: rgba(143, 90, 31, 0.12);
  --bg-glow: rgba(182, 138, 62, 0.16);
  --bg-start: #f6efe0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, var(--bg-glow), transparent 72rem),
    linear-gradient(140deg, var(--bg-start) 0%, var(--bg) 70%);
  background-repeat: no-repeat;
  background-color: var(--bg);
  min-height: 100vh;
}

a {
  color: inherit;
}

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

.page {
  width: min(1220px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 3rem;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 0 1.2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.brand img {
  width: 2.9rem;
  height: 2.9rem;
  object-fit: contain;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.nav-toggle {
  display: none;
  width: 2.8rem;
  height: 2.8rem;
  padding: 0;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 999px;
  background:
    linear-gradient(135deg, rgba(255, 77, 33, 0.14), transparent 58%),
    linear-gradient(180deg, var(--card-surface-top), var(--card-surface-bottom));
  color: var(--ink);
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.nav-toggle-line {
  display: block;
  width: 1.05rem;
  height: 0.95rem;
  margin: 0.02rem auto;
  transition: transform 0.2s ease, opacity 0.2s ease;
  transform-origin: center;
}

.nav-toggle-line svg {
  display: block;
  width: 100%;
  height: 100%;
}

.nav-toggle-line path {
  fill: none;
  stroke: currentColor;
  stroke-width: 2.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-toggle-line--slash {
  width: 0.9rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.theme-toggle,
.button,
.button-secondary,
.carousel-buttons button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.7rem 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.86rem;
}

.theme-toggle,
.button-secondary,
.carousel-buttons button {
  background: var(--social-bg);
  color: var(--ink);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  width: 2.8rem;
  height: 2.8rem;
  padding: 0;
}

.theme-toggle-icon {
  font-size: 1rem;
  line-height: 1;
}

.button {
  background: var(--accent);
  color: white;
  text-decoration: none;
  border-color: transparent;
}

.button-secondary {
  text-decoration: none;
}

.hero {
  position: relative;
  border-radius: 2rem;
  overflow: hidden;
  border: 1px solid var(--line);
  min-height: 30rem;
  background: var(--surface);
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.52;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(140deg, var(--hero-overlay-a), var(--hero-overlay-b)),
    linear-gradient(180deg, transparent, var(--hero-overlay-c));
}

.hero-copy {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1rem;
  align-content: end;
  min-height: 30rem;
  padding: 2rem;
}

.eyebrow {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.8rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Barlow Condensed", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

h1 {
  font-size: clamp(3.8rem, 8vw, 7rem);
  line-height: 0.98;
  max-width: 11ch;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.05rem;
}

.lead,
.page-intro {
  margin: 0;
  max-width: 60ch;
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.04rem;
}

html[data-theme="light"] .hero-copy .lead,
html[data-theme="light"] .hero-copy h1,
html[data-theme="light"] .hero-copy .eyebrow {
  color: var(--ink);
}

.section,
.panel,
.news,
.sections,
.sponsors,
.socials,
.content-grid,
.card-grid {
  margin-top: 1rem;
}

.section-box,
.panel,
.news,
.sections,
.sponsors,
.socials,
.content-grid > *,
.document-list,
.board-grid,
.calendar-list,
.contact-grid {
  border-radius: 2rem;
  padding: 1.3rem;
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);
  border: 1px solid var(--line);
}

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}

.grid-2,
.grid-3,
.grid-4,
.section-grid,
.sponsor-grid,
.board-grid,
.calendar-list,
.contact-grid,
.document-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.grid-2,
.section-grid {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3,
.sponsor-grid,
.contact-grid {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4,
.document-grid {
  grid-template-columns: repeat(4, 1fr);
}

.card,
.news-card,
.info-card,
.section-card,
.sponsor-card,
.social-card,
.document-card,
.person-card,
.event-card,
.contact-card {
  padding: 1rem;
  border-radius: 1.4rem;
  background: linear-gradient(180deg, var(--card-surface-top), var(--card-surface-bottom));
  border: 1px solid var(--card-border);
}

.section-card--media {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  align-items: stretch;
  padding: 0;
  overflow: hidden;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.section-card--media:hover,
.section-card--media:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 77, 33, 0.28);
  box-shadow: 0 0.8rem 1.8rem rgba(0, 0, 0, 0.12);
}

.section-card-image {
  overflow: hidden;
  min-height: 100%;
}

.section-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-card-body {
  display: grid;
  align-content: start;
  gap: 0.45rem;
  padding: 1rem 1rem 1rem 0;
}

.section-card-body .small {
  text-decoration: underline;
}

.riegen-card {
  display: block;
  padding: 0 1rem 1rem;
  overflow: hidden;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.riegen-card > img:first-child {
  max-width: none;
  width: calc(100% + 2rem);
  margin: 0 -1rem 0.9rem;
  border-radius: 1rem 1rem 0 0;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

.riegen-card:hover,
.riegen-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 77, 33, 0.28);
  box-shadow: 0 0.8rem 1.8rem rgba(0, 0, 0, 0.12);
}

.riegen-card .small {
  text-decoration: underline;
}

.sponsor-card {
  display: grid;
  align-content: start;
  gap: 0;
}

.sponsor-card--link {
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.sponsor-card--link:hover,
.sponsor-card--link:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 77, 33, 0.28);
  box-shadow: 0 0.8rem 1.8rem rgba(0, 0, 0, 0.12);
}

.sponsor-card-logo {
  min-height: 7.5rem;
  display: grid;
  place-items: center;
  margin: -1rem -1rem 1rem;
  padding: 1rem;
  border-radius: 1.2rem 1.2rem 0 0;
  background: var(--tile-bg);
  border-bottom: 1px solid var(--tile-border);
}

.sponsor-card-logo img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 4.4rem;
  object-fit: contain;
}

.sponsor-card-logo--text span {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: #34281f;
}

.sponsor-card strong {
  margin-top: 0.2rem;
}

.sponsor-card .small {
  text-decoration: underline;
}

.board-grid--people {
  grid-template-columns: repeat(2, 1fr);
}

.person-card--media {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  align-items: stretch;
  overflow: hidden;
  padding: 0;
}

.person-card-photo {
  min-height: 100%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at top, rgba(255, 210, 91, 0.4), transparent 55%),
    linear-gradient(180deg, rgba(255, 77, 33, 0.22), rgba(255, 77, 33, 0.06)),
    var(--surface-alt);
  border-radius: 1rem 0 0 1rem;
  font-family: "Barlow Condensed", sans-serif;
  font-size: 2.1rem;
  letter-spacing: 0.06em;
  color: var(--ink);
  overflow: hidden;
}

.person-card-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-card-body {
  display: grid;
  align-content: start;
  gap: 0.45rem;
  padding: 1rem 1rem 1rem 0;
}

.card p,
.news-card p,
.info-card p,
.section-card p,
.sponsor-card p,
.social-card p,
.document-card p,
.person-card p,
.event-card p,
.contact-card p,
.meta-list,
.small {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.card strong,
.news-card strong,
.info-card strong,
.section-card strong,
.sponsor-card strong,
.document-card strong,
.person-card strong,
.event-card strong,
.contact-card strong {
  display: block;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.95rem;
}

.hero-actions,
.inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.carousel {
  margin-top: 1rem;
  display: grid;
  gap: 1rem;
}

.carousel-viewport {
  overflow: hidden;
}

.carousel-track {
  display: flex;
  transition: transform 0.35s ease;
}

.slide {
  min-width: 100%;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1rem;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.carousel-dots {
  display: flex;
  gap: 0.45rem;
}

.dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 999px;
  border: 0;
  background: rgba(255, 255, 255, 0.16);
  cursor: pointer;
}

html[data-theme="light"] .dot {
  background: rgba(26, 29, 31, 0.22);
}

.dot.active {
  background: var(--accent);
}

html[data-theme="light"] .dot.active {
  background: var(--accent);
}

.carousel-buttons {
  display: flex;
  gap: 0.6rem;
}

.carousel-buttons button {
  min-width: 2.8rem;
  padding-inline: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.carousel-buttons i {
  font-size: 0.95rem;
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.logo-tile {
  min-height: 6.2rem;
  display: grid;
  place-items: center;
  border-radius: 1.2rem;
  background: var(--tile-bg);
  border: 1px solid var(--tile-border);
  padding: 0.8rem;
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.logo-tile:hover,
.logo-tile:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 77, 33, 0.28);
  box-shadow: 0 0.8rem 1.8rem rgba(0, 0, 0, 0.12);
}

.logo-tile img {
  max-width: 100%;
  max-height: 2.8rem;
  object-fit: contain;
}

.social-card {
  display: grid;
  gap: 0.45rem;
  text-decoration: none;
  color: var(--ink);
}

.social-card span {
  color: var(--text-1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
}

.social-card strong {
  margin: 0;
}

.list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.list-item {
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.list-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-header {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.page-header + .section-box,
.page-header + .split,
.page-header + .calendar-list,
.page-header + .board-grid,
.page-header + .contact-grid,
.page-header + .document-list {
  margin-top: 1rem;
}

/* Archiv-Toggle (details/summary) */
.archive-toggle {
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);
  border: 1px solid var(--line);
  border-radius: 2rem;
  padding: 1.3rem;
  margin-top: 1rem;
}

.archive-toggle summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  user-select: none;
}

.archive-toggle summary::-webkit-details-marker { display: none; }

.archive-toggle summary h2 {
  margin: 0;
}

.archive-toggle summary::after {
  content: '';
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
  background-color: var(--accent);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  mask-repeat: no-repeat;
  mask-position: center;
  mask-size: contain;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  -webkit-mask-size: contain;
  transition: transform 0.25s ease;
}

.archive-toggle[open] summary::after {
  transform: rotate(180deg);
}

.archive-toggle .calendar-list {
  margin-top: 1rem;
}

.footer {
  margin-top: 1rem;
  padding: 1.2rem 1.3rem;
  border-radius: 2rem;
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-alt) 100%);
  border: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links a {
  text-decoration: none;
}

.footer-socials {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.footer-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--social-bg);
  text-decoration: none;
}

.footer-social img {
  width: 1.15rem;
  height: 1.15rem;
  object-fit: contain;
}

.footer-social i {
  font-size: 1rem;
  line-height: 1;
}

.photo-collage {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  border-radius: 1.2rem;
  overflow: hidden;
  margin-bottom: 1rem;
}

.photo-collage img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  max-width: none;
}

.photo-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  border-radius: 1.2rem;
  overflow: hidden;
  margin-top: 1rem;
}

.photo-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  max-width: none;
}

details.panel > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin: 0;
}

details.panel > summary::-webkit-details-marker {
  display: none;
}

details.panel > summary::after {
  content: "+";
  font-family: "Barlow Condensed", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--muted);
  line-height: 1;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

details[open].panel > summary::after {
  transform: rotate(45deg);
}

details.panel .list {
  margin-top: 1rem;
}

@media (max-width: 960px) {
  .split,
  .slide,
  .grid-2,
  .grid-3,
  .grid-4,
  .section-grid,
  .sponsor-grid,
  .board-grid,
  .calendar-list,
  .contact-grid,
  .document-grid,
  .logo-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    position: relative;
    flex-wrap: wrap;
  }

  .nav-actions {
    flex: 1 0 0;
    min-width: 0;
    justify-content: flex-end;
    gap: 0.65rem;
  }

  .section-card--media {
    grid-template-columns: 1fr;
  }

  .section-card-image {
    min-height: 12rem;
  }

  .board-grid--people {
    grid-template-columns: 1fr;
  }

  .person-card--media {
    grid-template-columns: 1fr;
  }

  .person-card-photo {
    min-height: 12rem;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    order: 2;
  }

  .nav-links {
    display: none;
    width: 100%;
    order: 3;
    flex-direction: column;
    gap: 0.85rem;
    margin-top: 0.6rem;
    padding: 1rem 1.1rem;
    border-radius: 1.25rem;
    background: linear-gradient(180deg, var(--card-surface-top), var(--card-surface-bottom));
    border: 1px solid var(--card-border);
  }

  .nav.nav-open .nav-links {
    display: flex;
  }

  .nav.nav-open .nav-toggle-line:nth-child(1) {
    height: 0.16rem;
    background: currentColor;
    transform: translateY(6px) rotate(45deg);
  }

  .nav.nav-open .nav-toggle-line:nth-child(1) svg,
  .nav.nav-open .nav-toggle-line:nth-child(3) svg {
    display: none;
  }

  .nav.nav-open .nav-toggle-line:nth-child(2) {
    height: 0.16rem;
    background: currentColor;
    transform: translateY(-6px) rotate(-45deg);
  }
}