:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --primary: #2c3e50;
  --primary-light: #34495e;
  --accent: #3d6b99;
  --text: #2c3e50;
  --muted: #7f8c9a;
  --border: #dde3e8;
  --danger: #c0392b;
  --ok: #27ae60;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
header {
  background: var(--primary);
  color: #fff;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
header h1 { font-size: 18px; font-weight: 600; }
header a { color: #cdd8e2; text-decoration: none; font-size: 14px; }
header a:hover { color: #fff; }
.container { max-width: 1000px; margin: 0 auto; padding: 24px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
.tile {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
  text-decoration: none;
  color: var(--text);
  transition: box-shadow .15s, transform .15s;
  display: block;
}
.tile:hover { box-shadow: 0 6px 18px rgba(44,62,80,.12); transform: translateY(-2px); }
.tile h3 { color: var(--accent); margin-bottom: 8px; font-size: 16px; }
.tile p { color: var(--muted); font-size: 14px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  max-width: 420px;
  margin: 60px auto;
}
.card h2 { margin-bottom: 20px; color: var(--primary); }
label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 4px; }
input, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
}
button, .btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  margin-top: 16px;
  text-decoration: none;
  display: inline-block;
}
button:hover, .btn:hover { background: var(--primary-light); }
.btn-danger { background: var(--danger); }
.btn-small { padding: 5px 10px; font-size: 12px; margin: 2px; }
.fehler { color: var(--danger); font-size: 14px; margin-top: 12px; }
.doc-list { list-style: none; }
.doc-list li {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
table { width: 100%; border-collapse: collapse; margin-top: 16px; background: var(--card); }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { background: var(--bg); color: var(--muted); }
.back { font-size: 14px; color: var(--accent); text-decoration: none; }
.admin-section { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 24px; margin-bottom: 24px; }
.admin-section h2 { color: var(--primary); margin-bottom: 16px; font-size: 17px; }
.inline-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.badge { font-size: 12px; padding: 3px 8px; border-radius: 4px; }
.badge-ok { background: #e8f6ee; color: var(--ok); }
.badge-off { background: #fbeaea; color: var(--danger); }