:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --surface: #f9fafb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111827;
    --fg: #e5e7eb;
    --muted: #9ca3af;
    --border: #374151;
    --accent: #3b82f6;
    --accent-fg: #0b1220;
    --surface: #1f2937;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.brand { font-weight: 700; font-size: 1.1rem; color: var(--fg); }

.topbar-search input, .search-form input {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--fg);
  min-width: 220px;
}

.search-form { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; }

.content { max-width: 1000px; margin: 0 auto; padding: 1.5rem; }

h1 { font-size: 1.4rem; margin: 1.5rem 0 0.75rem; }
h1:first-child { margin-top: 0; }

.breadcrumb { color: var(--muted); font-size: 0.9rem; margin-bottom: 1rem; }
.breadcrumb a { color: var(--muted); }

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.badge-niedrig { background: #dcfce7; color: #166534; }
.badge-mittel { background: #fef9c3; color: #854d0e; }
.badge-hoch { background: #fee2e2; color: #991b1b; }
.badge-followup { background: #dbeafe; color: #1e40af; }
.badge-status-aktuell { background: var(--surface); color: var(--muted); }
.badge-status-veraltet { background: #f3f4f6; color: #9ca3af; text-decoration: line-through; }

@media (prefers-color-scheme: dark) {
  .badge-niedrig { background: #14532d; color: #bbf7d0; }
  .badge-mittel { background: #713f12; color: #fef08a; }
  .badge-hoch { background: #7f1d1d; color: #fecaca; }
  .badge-followup { background: #1e3a8a; color: #bfdbfe; }
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1rem 0.45rem;
  margin-right: 0.25rem;
  color: var(--muted);
}

.project-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 2rem; }
.project-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  background: var(--surface);
}
.project-card h2 { margin: 0.5rem 0 0; font-size: 1.05rem; color: var(--fg); }

.entry-table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; }
.entry-table th, .entry-table td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.entry-table th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; }

.empty { color: var(--muted); font-style: italic; }

.project-layout { display: flex; gap: 2rem; align-items: flex-start; }
.tree { width: 220px; flex-shrink: 0; font-size: 0.9rem; }
.tree ul { list-style: none; padding-left: 1rem; margin: 0.2rem 0; }
.tree > ul { padding-left: 0; }
.tree a.active { font-weight: 700; }
.entries { flex: 1; min-width: 0; }

.entries-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }

.button {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg);
  font-size: 0.85rem;
  cursor: pointer;
}
.button-primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.button:hover { text-decoration: none; filter: brightness(0.97); }

.entry-header { display: flex; align-items: baseline; justify-content: space-between; }
.entry-actions { display: flex; gap: 0.5rem; }
.entry-meta { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; color: var(--muted); font-size: 0.85rem; margin: 0.5rem 0 1rem; }
.meta-line { color: var(--muted); }
.sources { color: var(--muted); font-size: 0.85rem; margin-bottom: 1rem; }

.markdown-body { line-height: 1.65; }
.markdown-body pre { background: var(--surface); padding: 0.75rem; border-radius: 6px; overflow-x: auto; }
.markdown-body code { background: var(--surface); padding: 0.1rem 0.3rem; border-radius: 4px; }

form label { display: block; margin-bottom: 1rem; font-size: 0.85rem; color: var(--muted); }
form input[type="text"], form select {
  display: block;
  width: 100%;
  margin-top: 0.3rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-size: 0.95rem;
}
.form-actions { display: flex; gap: 0.5rem; margin-top: 1rem; }
.error { background: #fee2e2; color: #991b1b; padding: 0.6rem 0.8rem; border-radius: 6px; }

.diff-wrapper { overflow-x: auto; font-size: 0.82rem; }
table.diff { border-collapse: collapse; width: 100%; }
table.diff td, table.diff th { padding: 0.1rem 0.4rem; white-space: pre; font-family: ui-monospace, monospace; }
.diff_header { color: var(--muted); text-align: right; }
.diff_next { background: var(--surface); }
td.diff_add { background: #dcfce7; }
td.diff_sub { background: #fee2e2; }
td.diff_chg { background: #fef9c3; }

@media (prefers-color-scheme: dark) {
  td.diff_add { background: #14532d; }
  td.diff_sub { background: #7f1d1d; }
  td.diff_chg { background: #713f12; }
}

@media (max-width: 720px) {
  .project-layout { flex-direction: column; }
  .tree { width: 100%; }
}