*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:    #1a6b8a;
  --primary-lt: #4aadcc;
  --bg:         #F8F9FA;
  --surface:    #FFFFFF;
  --text:       #2C3E50;
  --text-muted: #5A6C7D;
  --border:     #E8ECF0;
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  14px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
}

/* LAYOUT */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section    { padding: 48px 0; }
.section-sm { padding: 32px 0; }

/* CARDS */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

/* HEADER */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  padding: 14px 0;
}
.site-header .inner {
  display: flex; justify-content: space-between; align-items: center;
}
.logo img { height: 52px; width: auto; }
.nav { display: flex; gap: 24px; align-items: center; list-style: none; }
.nav a { color: var(--text-muted); text-decoration: none; font-size: 14px; font-weight: 500; }
.nav a:hover { color: var(--primary); }
.btn-nav {
  background: var(--primary); color: #fff;
  padding: 8px 18px; border-radius: var(--radius-md);
  font-size: 13px; font-weight: 500; text-decoration: none;
}

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 11px 22px; border-radius: var(--radius-md);
  font-size: 14px; font-weight: 500; cursor: pointer;
  border: none; text-decoration: none; transition: opacity .15s;
}
.btn:hover { opacity: .88; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-outline  { background: transparent; color: var(--primary); border: 1px solid var(--primary); }

/* FORMS */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 12px; font-weight: 600; color: var(--primary); text-transform: uppercase; letter-spacing: .4px; }
.form-control {
  background: #F8F9FA; border: 1.5px solid var(--border);
  border-radius: var(--radius-md); padding: 11px 14px;
  font-size: 15px; color: var(--text); font-family: inherit;
  transition: border-color .15s;
}
.form-control:focus { outline: none; border-color: var(--primary-lt); background: #fff; }

/* TOGGLE GROUP */
.toggle-group { display: flex; gap: 8px; background: #F8F9FA; padding: 5px; border-radius: var(--radius-md); }
.toggle-btn {
  flex: 1; padding: 10px; background: transparent; border: none;
  border-radius: var(--radius-sm); font-size: 13px; font-weight: 600;
  color: var(--text-muted); cursor: pointer; transition: all .2s;
}
.toggle-btn.active { background: var(--primary); color: #fff; }

/* PPM BADGES */
.ppm-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 20px; font-size: 13px; font-weight: 600;
}
.ppm-niedrig { background: #e6f7ee; color: #0a6640; }
.ppm-mittel  { background: #fef9e6; color: #7d5a00; }
.ppm-erhoeht { background: #fef0e6; color: #7d3800; }
.ppm-hoch    { background: #fde8e8; color: #7d0000; }

/* STATS GRID */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.stat-card { background: #F0F8FB; border-radius: var(--radius-md); padding: 16px 20px; text-align: center; }
.stat-number { font-size: 26px; font-weight: 600; color: var(--primary); }
.stat-label  { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* PPM SCALE */
.ppm-scale { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.scale-item { border-radius: var(--radius-md); padding: 14px 10px; text-align: center; }
.scale-item .range  { font-size: 14px; font-weight: 600; }
.scale-item .desc   { font-size: 11px; margin-top: 4px; }

/* TABLE */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
  background: var(--primary); color: #fff;
  text-align: left; padding: 13px 16px;
  font-size: 12px; text-transform: uppercase; letter-spacing: .5px;
}
.data-table td { padding: 13px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #F0F8FB; }

/* FOOTER */
.site-footer {
  background: var(--surface); border-top: 1px solid var(--border);
  padding: 24px 0; margin-top: 64px;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: var(--text-muted);
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-muted); text-decoration: none; }
.footer-links a:hover { color: var(--primary); }

/* HERO */
.hero { background: #F0F8FB; padding: 60px 0 48px; }
.hero h1 { font-size: 38px; font-weight: 700; line-height: 1.2; margin-bottom: 12px; }
.hero h1 span { color: var(--primary); }
.hero p { font-size: 17px; color: var(--text-muted); max-width: 560px; margin-bottom: 28px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 36px; }

/* MOBILE */
@media (max-width: 768px) {
  .nav { display: none; }
  .hero h1 { font-size: 26px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .ppm-scale  { grid-template-columns: 1fr 1fr; }
  .data-table { font-size: 12px; }
  .data-table th, .data-table td { padding: 10px 12px; }
}

/* MAP */
#ppm-map { height: 500px; border-radius: var(--radius-lg); border: 1px solid var(--border); }