.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8em 1.5em;
  font-family: var(--font-mono);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--color-text);
  transform: translate(-2px, -2px);
}

.btn:hover {
  transform: translate(0, 0);
  box-shadow: none;
  background-color: var(--color-accent);
  color: var(--color-surface);
  border-color: var(--color-accent);
}

.btn:active {
  background-color: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-surface);
}

.btn--secondary {
  background-color: transparent;
}

.btn--secondary:hover {
  background-color: var(--color-text);
  color: var(--color-surface);
  border-color: var(--color-text);
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 50px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__icon {
  width: 24px;
  height: 24px;
}

.nav__logo {
  font-family: var(--font-mono);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.nav__logo:hover {
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: var(--space-xs) var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link:hover {
  color: var(--color-accent);
}

.nav__link::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: var(--color-border);
  border-radius: 50%;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.2);
  transition: all var(--transition-fast);
}

.nav__link[aria-current="page"]::before,
.nav__link:hover::before {
  background-color: var(--color-accent);
  box-shadow: 0 0 6px var(--color-accent);
}

.nav__link:not(:last-child)::after {
  content: '|';
  position: absolute;
  right: 0;
  color: var(--color-border);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  padding: 6px;
  margin-left: var(--space-md);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-bg);
}

.theme-toggle svg {
  width: 100%;
  height: 100%;
}

@media (max-width: 768px) {
  .nav {
    flex-wrap: wrap;
    height: auto;
  }

  .nav__brand {
    width: 100%;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__links {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav__links li {
    border-bottom: 1px dashed var(--color-border);
  }

  .nav__links li:last-child {
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link {
    display: flex;
    padding: var(--space-sm) 0;
  }

  .nav__link::after {
    display: none;
  }

  .nav__link::before {
    flex-shrink: 0;
  }

  .theme-toggle {
    position: absolute;
    top: var(--space-sm);
    right: 0;
    margin: 0;
  }
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding: var(--space-lg) 0;
  margin-top: var(--space-2xl);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 10px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-border) 0,
    var(--color-border) 1px,
    transparent 1px,
    transparent 10px
  );
}

.footer__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-muted);
  margin: 0;
}

.production-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  transition: all var(--transition-base);
}

.production-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
  z-index: 10;
}

.production-card__image-wrapper {
  position: relative;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.production-card__image-wrapper picture {
  display: block;
  width: 100%;
  height: auto;
}

.production-card__image {
  width: 100%;
  height: auto;
  border: none;
  filter: grayscale(100%);
  transition: filter var(--transition-fast);
}

.production-card__image--latest,
.production-card:hover .production-card__image {
  filter: grayscale(0%);
}

.production-card__image-wrapper::after {
  content: '';
  position: absolute;
  top: 10px;
  left: 10px;
  width: 8px;
  height: 8px;
  background-color: var(--color-text);
  border-radius: 50%;
  z-index: 5;
}

.production-card:hover .production-card__image-wrapper::after,
.production-card--latest .production-card__image-wrapper::after {
  background-color: var(--color-accent);
  box-shadow: 0 0 5px var(--color-accent);
}

.production-card__content {
  padding: var(--space-xs);
  display: flex;
  flex-direction: column;
}

.production-card__link {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.production-card__meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 4px;
  margin-bottom: 4px;
}

.production-card__ref,
.production-card__date {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--color-muted);
}

.production-card__date {
  text-align: right;
}

.production-card__title {
  font-size: var(--text-base);
  line-height: 1.1;
  margin: 4px 0;
}

.production-card__author {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-muted);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.production-card__tagline {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  line-height: 1.3;
  margin-top: 4px;
}

.production-card__semester {
  display: inline-block;
  margin-top: var(--space-xs);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  background: var(--color-text);
  color: var(--color-surface);
  padding: 2px 6px;
  align-self: flex-start;
}

.production-card:hover .production-card__semester {
  background: var(--color-accent);
}

.eckdaten {
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  margin: var(--space-md) 0;
}

.eckdaten__item {
  display: grid;
  grid-template-columns: 150px 1fr;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.eckdaten__item:last-child {
  border-bottom: none;
}

.eckdaten__label {
  padding: var(--space-xs) var(--space-sm);
  border-right: 1px solid var(--color-border);
  color: var(--color-muted);
  text-transform: uppercase;
  font-size: 0.7rem;
  display: flex;
  align-items: center;
}

.eckdaten__value {
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-serif);
}

.brutalist-box {
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  position: relative;
  background: var(--color-surface);
}