:root {
  --bg-color: #0f172a;
  --bg-card: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
  --border: #334155;
  --success: #10b981;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
}

header.topbar {
  background: var(--bg-card);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

header.topbar .logo-container {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-weight: 700;
  font-size: 1.25rem;
}

header.topbar .logo-container svg {
  width: 32px;
  height: 32px;
  color: var(--accent);
}

nav.main-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  margin-bottom: 1.5rem;
}

h1, h2, h3 {
  margin-top: 0;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
  text-align: center;
}

.btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-danger {
  background: var(--danger);
}
.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  background: var(--bg-color);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  color: var(--text-main);
  box-sizing: border-box;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

.model-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.plan-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  margin-bottom: 0.5rem;
  background: var(--bg-color);
}

.plan-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: var(--border);
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}
.plan-badge.struktur {
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
}
.plan-badge.pdf {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.plan-meta {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Plan Renderer Styles (Bildschirm) */
.print-header-fields {
  display: none; /* Nur für Druck */
}

.plan-table-wrapper {
  overflow-x: auto;
}

.plan-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  color: var(--text-main);
}

.plan-table th, .plan-table td {
  border: 1px solid var(--border);
  padding: 0.75rem;
}

.plan-table th {
  background: rgba(255,255,255,0.05);
  font-weight: 600;
  text-align: left;
}

.plan-table th.vertical-text span {
  /* Für Bildschirm normale Anzeige, ggf. leicht gedreht oder abkürzend wenn zu eng */
  display: inline-block;
}

.plan-table td.center {
  text-align: center;
}

.aufgabe-text {
  font-weight: 500;
}
.aufgabe-zusatz {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.checkbox {
  font-size: 1.25rem;
  line-height: 1;
}
.checkbox.empty {
  color: var(--text-muted);
}
.checkbox.filled {
  color: var(--accent);
}

.plan-legend {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Responsive Cards für Wartungsplan Tabelle auf Mobile */
@media screen and (max-width: 768px) {
  .plan-table thead {
    display: none;
  }
  .plan-table tbody tr {
    display: block;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1rem;
  }
  .plan-table td {
    display: block;
    border: none;
    padding: 0.25rem 0;
  }
  .plan-table td.center {
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  /* Kleiner Trick um die Spaltentitel auf Mobile in der Zelle anzuzeigen.
     Eigentlich bräuchten wir data-label im HTML, was der Renderer aber nicht hat.
     Daher nutzen wir eine vereinfachte Darstellung. */
}