.zeittafel-einstieg {
  padding: 54px 0 22px;
}
.zeittafel-einleitung {
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  background:
    radial-gradient(circle at 92% 10%, rgba(31,61,43,.08), transparent 28%),
    rgba(255,255,255,.78);
}
.zeittafel-einleitung > :last-child { margin-bottom: 0; }

.zeittafel-bereich {
  padding: 46px 0 110px;
}
.zeittafel-bereich-kopf {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr);
  gap: 44px;
  align-items: end;
  margin-bottom: 32px;
}
.zeittafel-kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--color-primary);
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.zeittafel-bereich-kopf h2 {
  max-width: 790px;
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  line-height: .98;
}
.zeittafel-bereich-kopf > p {
  margin: 0;
  padding-left: 22px;
  border-left: 2px solid var(--color-primary);
}

.zeittafel-filter {
  position: sticky;
  top: 10px;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 50px;
  padding: 12px;
  border: 1px solid rgba(223,225,219,.88);
  border-radius: 999px;
  background: rgba(247,243,234,.92);
  box-shadow: 0 12px 32px rgba(22,41,29,.08);
  backdrop-filter: blur(12px);
}
.zeittafel-filter button {
  min-height: 39px;
  padding: 7px 15px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--color-text-muted);
  font: inherit;
  font-size: .82rem;
  font-weight: 750;
  cursor: pointer;
}
.zeittafel-filter button:hover,
.zeittafel-filter button.active {
  background: var(--color-primary);
  color: #fff;
}

.zeitstrahl {
  position: relative;
  display: grid;
  gap: 42px;
  padding: 16px 0;
}
.zeitstrahl::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background:
    linear-gradient(var(--color-primary), var(--color-primary)) padding-box,
    repeating-linear-gradient(to bottom, transparent 0 10px, rgba(31,61,43,.12) 10px 20px);
  transform: translateX(-50%);
}
.zeitstrahl-eintrag {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 148px minmax(0, 1fr);
  align-items: start;
  min-height: 140px;
}
.zeitstrahl-eintrag[hidden] { display: none; }
.zeitstrahl-punkt {
  grid-column: 2;
  grid-row: 1;
  justify-self: center;
  width: 16px;
  height: 16px;
  margin-top: 24px;
  border: 4px solid var(--color-bg-alt);
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}
.zeitstrahl-jahr {
  grid-column: 2;
  grid-row: 1;
  justify-self: center;
  margin-top: 51px;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-size: .78rem;
  font-weight: 850;
  line-height: 1.2;
  white-space: nowrap;
}
.zeitstrahl-karte {
  grid-column: 1;
  grid-row: 1;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: rgba(255,255,255,.9);
  box-shadow: 0 16px 40px rgba(22,41,29,.075);
}
.zeitstrahl-eintrag:nth-child(even) .zeitstrahl-karte {
  grid-column: 3;
}
.zeitstrahl-karte > img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
}
.zeitstrahl-karte-inhalt {
  padding: clamp(22px, 3vw, 34px);
}
.zeitstrahl-epoche {
  display: block;
  margin-bottom: 7px;
  color: #a86629;
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.zeitstrahl-karte h3 {
  margin-bottom: 12px;
  color: var(--color-primary);
  font-size: clamp(1.18rem, 2vw, 1.48rem);
}
.zeitstrahl-text > :last-child { margin-bottom: 0; }
.zeitstrahl-text p { font-size: .96rem; }

.zeittafel-leer {
  max-width: 680px;
  margin: 30px auto;
  padding: 58px;
  border: 1px solid var(--color-border);
  border-radius: 18px;
  background: rgba(255,255,255,.75);
  text-align: center;
}
.zeittafel-leer i {
  color: var(--color-primary);
  font-size: 2.4rem;
}
.zeittafel-leer p { margin-right: auto; margin-left: auto; }

@media (max-width: 900px) {
  .zeittafel-bereich-kopf { grid-template-columns: 1fr; gap: 20px; }
  .zeittafel-bereich-kopf > p { max-width: 620px; }
  .zeittafel-filter {
    position: static;
    border-radius: 18px;
  }
  .zeitstrahl { gap: 28px; }
  .zeitstrahl::before {
    left: 24px;
    transform: none;
  }
  .zeitstrahl-eintrag {
    grid-template-columns: 50px minmax(0, 1fr);
    min-height: 0;
  }
  .zeitstrahl-punkt {
    grid-column: 1;
    margin-top: 20px;
  }
  .zeitstrahl-jahr {
    grid-column: 2;
    justify-self: start;
    z-index: 2;
    margin: 0 0 -12px 18px;
    background: var(--color-primary);
    color: #fff;
  }
  .zeitstrahl-karte,
  .zeitstrahl-eintrag:nth-child(even) .zeitstrahl-karte {
    grid-column: 2;
    grid-row: 2;
    margin-left: 18px;
  }
}

@media (max-width: 540px) {
  .zeittafel-einstieg { padding-top: 32px; }
  .zeittafel-einleitung { padding: 24px 20px; }
  .zeittafel-bereich { padding-top: 30px; }
  .zeittafel-filter {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: 9px;
  }
  .zeittafel-filter button { flex: 0 0 auto; }
  .zeitstrahl-eintrag { grid-template-columns: 38px minmax(0, 1fr); }
  .zeitstrahl::before { left: 18px; }
  .zeitstrahl-punkt { width: 14px; height: 14px; }
  .zeitstrahl-jahr,
  .zeitstrahl-karte,
  .zeitstrahl-eintrag:nth-child(even) .zeitstrahl-karte { margin-left: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  .zeittafel-filter { backdrop-filter: none; }
}