:root {
  --blue: #0055dc;
  --blue-dark: #003d9e;
  --bg: #f4f6f9;
  --card: #ffffff;
  --border: #e2e6ec;
  --text: #24292f;
  --text-muted: #6b7280;
  --green: #1a9e5c;
  --red: #d1453b;
  --yellow: #b8860b;
}

* { box-sizing: border-box; }

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

.app { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  background: var(--blue);
  color: white;
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  flex-shrink: 0;
}

.sidebar .logo {
  font-size: 1.2rem;
  font-weight: 700;
  padding: 0 24px 24px 24px;
}

.sidebar a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  padding: 12px 24px;
  font-size: 0.95rem;
}

.sidebar a:hover { background: rgba(255,255,255,0.1); }
.sidebar a.active { background: rgba(255,255,255,0.18); color: white; font-weight: 600; }

.content {
  flex: 1;
  padding: 32px 40px;
  max-width: 1100px;
}

h1 { margin-top: 0; font-size: 1.6rem; }
h2 { font-size: 1.2rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 20px;
}

.top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  background: var(--blue);
  color: white;
  border: none;
  padding: 10px 18px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.9rem;
  cursor: pointer;
}
.btn:hover { background: var(--blue-dark); }
.btn.secondary { background: white; color: var(--blue); border: 1px solid var(--blue); }
.btn.danger { background: white; color: var(--red); border: 1px solid var(--red); }
.btn.small { padding: 6px 12px; font-size: 0.82rem; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
th { color: var(--text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; }
tr:last-child td { border-bottom: none; }
tr.clickable:hover { background: #f9fafc; cursor: pointer; }

.badge { padding: 3px 10px; border-radius: 100px; font-size: 0.78rem; font-weight: 600; }
.badge.offen { background: #fff4e0; color: var(--yellow); }
.badge.bezahlt, .badge.angenommen { background: #e6f7ee; color: var(--green); }
.badge.abgelehnt, .badge.storniert { background: #fdeceb; color: var(--red); }

.nummer-bezahlt { color: var(--green); font-weight: 600; }

form label { display: block; margin-bottom: 4px; font-size: 0.85rem; color: var(--text-muted); }
form .field { margin-bottom: 16px; }
form input[type=text], form input[type=number], form input[type=date], form input[type=email], form textarea, form select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.92rem;
  font-family: inherit;
}
form textarea { resize: vertical; min-height: 70px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

.empty { color: var(--text-muted); padding: 40px 0; text-align: center; }

.pos-row { display: grid; grid-template-columns: 55px 70px 1fr 65px 55px 85px 90px 32px; gap: 8px; align-items: center; margin-bottom: 8px; }
.pos-row input { padding: 7px 9px; }
.pos-header { font-size: 0.75rem; text-transform: uppercase; color: var(--text-muted); }
.summe-box { margin-top: 20px; margin-left: auto; width: 280px; }
.summe-row { display: flex; justify-content: space-between; padding: 6px 0; font-size: 0.92rem; }
.summe-row.total { font-weight: 700; font-size: 1.1rem; border-top: 1px solid var(--border); padding-top: 10px; margin-top: 6px; }

.remove-btn { background: none; border: none; color: var(--red); cursor: pointer; font-size: 1.1rem; }
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.stat-card .value { font-size: 1.6rem; font-weight: 700; }
.stat-card .label { color: var(--text-muted); font-size: 0.85rem; }