:root {
  --color-primary: #337ab7;
  --color-text: #333;
  --color-border: #e0e0e0;
  --max-width: 1200px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  line-height: 1.6;
  background: #fff;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: #fff;
  padding: 0.5em 1em;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: #fff;
}
.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-branding__logo img {
  max-height: 70px;
  display: block;
}
.primary-nav ul {
  list-style: none;
  display: flex;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.primary-nav a {
  color: var(--color-text);
  font-weight: 600;
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}
.primary-nav a:hover,
.primary-nav a.is-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-toggle-checkbox {
  display: none;
}
.nav-toggle-label {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 20px;
  cursor: pointer;
}
.nav-toggle-label span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--color-text);
  border-radius: 2px;
}

@media (max-width: 767px) {
  .site-header__inner {
    position: relative;
    padding-right: calc(1.5rem + 26px + 1rem);
  }
  .nav-toggle-label {
    display: flex;
    position: absolute;
    top: 50%;
    right: 1.5rem;
    transform: translateY(-50%);
  }
  .primary-nav {
    position: absolute;
    top: 100%;
    right: 1.5rem;
    margin-top: 0.5rem;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
    padding: 0.5rem;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
    z-index: 20;
  }
  .primary-nav ul {
    flex-direction: column;
    gap: 0;
    flex-wrap: nowrap;
  }
  .primary-nav a {
    display: block;
    padding: 0.6rem 0.75rem;
    border-bottom: none;
    border-radius: 4px;
  }
  .primary-nav a:hover,
  .primary-nav a.is-active {
    background: #eaf2f9;
    border-bottom-color: transparent;
  }
  .nav-toggle-checkbox:checked ~ .primary-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* Layout */
.page-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 800px) {
  .content-grid {
    grid-template-columns: minmax(0, 3fr) minmax(220px, 1fr);
  }
}

/* Posts / pages */
.post, .page {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2rem;
  margin-bottom: 2rem;
}
.post:last-child { border-bottom: none; }

.post__meta {
  font-size: 0.85rem;
  color: #777;
  margin-bottom: 0.25rem;
}
.post__title, .page-title {
  margin: 0.2rem 0 0.75rem;
}
.post__title a { color: var(--color-text); }
.post__image { float: right; margin: 0 0 1rem 1.5rem; max-width: 240px; }
.post__content, .page__content { clear: both; }
.post__content p:first-child { margin-top: 0; }

.post__tags {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.post__tags--cloud {
  margin-top: 1rem;
  gap: 0.6rem;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: #eaf2f9;
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.tag:hover,
.tag:focus-visible {
  background: var(--color-primary);
  color: #fff;
}
.tag__count {
  font-weight: 400;
  font-size: 0.75em;
  opacity: 0.75;
}

.attachments ul { padding-left: 1.2rem; }

/* Sidebar */
.sidebar { padding-top: 0.5rem; }
.sponsors-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}
.sponsor-logo { max-width: 200px; }

/* Sponsoren page */
.sponsor-page-logo { max-width: 100%; height: auto; vertical-align: middle; }
.sponsor-page-logo--main { max-width: 220px; }
.sponsor-page-logo--sub { max-width: 130px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: #777;
}
.footer-nav {
  display: flex;
  gap: 1rem;
}
.footer-nav a {
  color: #777;
}