:root {
  --glass: rgba(255, 255, 255, 0.18);
  --glass-strong: rgba(255, 255, 255, 0.50);
  --border: rgba(255, 255, 255, 0.38);
  --text: #171717;
  --shadow: 0 20px 60px rgba(0, 0, 0, .20);
  --radius: 26px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.55;
  background:
    linear-gradient(rgba(18, 18, 18, .18), rgba(18, 18, 18, .30)),
    url("../bilder/hg.jpeg") center / cover fixed no-repeat;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, .16), transparent 30%),
    radial-gradient(circle at 80% 70%, rgba(255, 218, 185, .16), transparent 35%);
  pointer-events: none;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, .20);
  border-bottom: 1px solid rgba(255, 255, 255, .28);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.brand {
  font-size: clamp(1rem, 2vw, 1.3rem);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 700;
}

.navlinks {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: .92rem;
}

.navlinks a {
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
}

.navlinks a:hover {
  border-color: currentColor;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 9vh 24px 12vh;
}

.glass {
  background: linear-gradient(135deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(125%);
  -webkit-backdrop-filter: blur(18px) saturate(125%);
  border-radius: var(--radius);
}

.hero {
  min-height: 72vh;
  display: grid;
  align-items: start;
}

.hero-card {
  max-width: 760px;
  padding: clamp(28px, 6vw, 68px);
}

.eyebrow {
  font-family: Arial, Helvetica, sans-serif;
  letter-spacing: .20em;
  text-transform: uppercase;
  font-size: .78rem;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(3rem, 9vw, 7rem);
  line-height: .92;
  margin: 0 0 24px;
  font-weight: 500;
}

.lead {
  max-width: 620px;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  margin: 0;
}

.separator {
  height: 30vh;
  display: grid;
  place-items: center;
  color: white;
  text-shadow: 0 2px 20px rgba(0, 0, 0, .55);
  letter-spacing: .16em;
  text-transform: uppercase;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1.5rem;
}

.separator::after {
  content: "";
  display: block;
  width: 120px;
  height: 2px;
  margin: 1px auto 0;
  background: rgba(255, 255, 255, .75);
}

section {
  scroll-margin-top: 90px;
}

.section-card {
  padding: clamp(26px, 5vw, 58px);
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 28px;
}

h2 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  font-weight: 500;
   margin: 0 0 0.35em;
}

h3 {
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  line-height: 1.15;
  font-weight: 500;
  margin: 0;
}

.section-note {
  max-width: 440px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: .95rem;
  margin: 0;
}

.art-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.art-card {
  overflow: hidden;
  border-radius: 18px;
  background: rgba(255, 255, 255, .28);
  border: 1px solid rgba(255, 255, 255, .36);
  transition: transform .25s ease, box-shadow .25s ease;
}

.art-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .22);
}

.art-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  display: block;
}

.art-info {
  padding: 18px 18px 20px;
}

.art-info h3 {
  margin: 0 0 5px;
  font-size: 1.2rem;
  font-weight: 500;
}

.art-info p {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: .88rem;
  opacity: .8;
}

.two-column {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 36px;
  align-items: center;
}

.ausstellung .two-column {
  align-items: start;
}

.portrait {
  width: 100%;
  min-height: 420px;
  object-fit: cover;
  border-radius: 20px;
  display: block;
}

.button {
  display: inline-block;
  margin-top: 22px;
  padding: 12px 20px;
  border: 1px solid rgba(20, 20, 20, .55);
  border-radius: 999px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: .92rem;
  transition: .2s ease;
}

.button:hover {
  background: rgba(20, 20, 20, .88);
  color: white;
}

footer {
  max-width: var(--max-width);
  margin: 0 auto 40px;
  padding: 0 24px;
}

.footer-card {
  padding: 24px 28px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: .9rem;
}

@media (max-width: 860px) {
  body {
    background-attachment: scroll;
  }

  .art-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  .section-title {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .navlinks {
    gap: 10px 14px;
  }

  main {
    padding-top: 5vh;
  }

  .hero {
    min-height: 62vh;
  }

  .art-grid {
    grid-template-columns: 1fr;
  }

  .separator {
    height: 18vh;
  }

  .footer-card {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}