:root {
  --ch-red: #d52b1e;
  --ch-red-dark: #b01f14;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --green-700: #15803d;
  --green-100: #dcfce7;
  --amber-800: #92400e;
  --amber-100: #fef3c7;
  --red-800: #991b1b;
  --red-100: #fee2e2;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--slate-900);
  background: var(--slate-50);
  line-height: 1.55;
}

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header & Topbar */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--slate-200);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 1.12rem;
  color: var(--slate-900);
  text-decoration: none;
}
.brand:hover {
  text-decoration: none;
}

.swiss-cross {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--ch-red);
  color: #fff;
  font-weight: 900;
  border-radius: 5px;
  font-size: 1.1rem;
  line-height: 1;
}

.nav-links {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  font-size: 0.88rem;
  font-weight: 600;
}
.nav-links a {
  color: var(--slate-700);
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
}
.nav-links a.active,
.nav-links a:hover {
  color: var(--ch-red);
  background: #fff1f0;
  text-decoration: none;
}

/* Hero & Above-the-fold layout */
.hero {
  padding: 1.75rem 0 1rem;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid var(--slate-200);
  color: var(--slate-700);
}
.badge-red {
  background: #fff1f0;
  border-color: #fecaca;
  color: var(--ch-red-dark);
}
.badge-green {
  background: var(--green-100);
  border-color: #bbf7d0;
  color: var(--green-700);
}

.hero h1 {
  font-size: clamp(1.55rem, 2.8vw, 2.25rem);
  line-height: 1.2;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.hero-sub {
  color: var(--slate-600);
  font-size: 1.02rem;
  max-width: 820px;
  margin: 0 0 1.25rem;
}

/* Tool Card */
.tool-shell {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 14px;
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.06);
  overflow: hidden;
  margin-bottom: 2.5rem;
}

.niche-tabs {
  display: flex;
  overflow-x: auto;
  background: var(--slate-100);
  border-bottom: 1px solid var(--slate-200);
  padding: 0.4rem 0.5rem 0;
  gap: 0.35rem;
}

.niche-tab {
  appearance: none;
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  color: var(--slate-700);
  font-weight: 700;
  font-size: 0.86rem;
  padding: 0.65rem 0.95rem;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.niche-tab:hover {
  background: rgba(255, 255, 255, 0.65);
  color: var(--slate-900);
}
.niche-tab.active {
  background: #ffffff;
  color: var(--ch-red);
  border-color: var(--slate-200);
}

.tool-body {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 1.5rem;
  padding: 1.5rem;
}

@media (max-width: 900px) {
  .tool-body {
    grid-template-columns: 1fr;
  }
}

/* Dropzone & Demo bar */
.action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.btn-demo {
  background: var(--slate-900);
  color: #ffffff;
  border: none;
  padding: 0.55rem 0.95rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.86rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.btn-demo:hover {
  background: var(--slate-800);
}

.dropzone {
  border: 2px dashed var(--slate-200);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  text-align: center;
  background: var(--slate-50);
  margin-bottom: 1.15rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.dropzone:hover,
.dropzone.dragover {
  border-color: var(--ch-red);
  background: #fffafa;
}
.dropzone-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--slate-800);
}
.dropzone-sub {
  font-size: 0.78rem;
  color: var(--slate-500);
  margin-top: 0.2rem;
}

/* Form controls */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}
@media (max-width: 580px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.form-group.full {
  grid-column: 1 / -1;
}
.form-group label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--slate-700);
}
.form-group input[type="number"],
.form-group input[type="text"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
  padding: 0.58rem 0.7rem;
  border: 1px solid var(--slate-200);
  border-radius: 7px;
  font-size: 0.95rem;
  color: var(--slate-900);
  background: #fff;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 2px solid rgba(213, 43, 30, 0.25);
  border-color: var(--ch-red);
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.55rem 0.7rem;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 8px;
  font-size: 0.84rem;
}
.checkbox-row input[type="checkbox"] {
  margin-top: 0.2rem;
  accent-color: var(--ch-red);
}

/* Audit Report Panel */
.report-panel {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.report-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--slate-200);
  padding-bottom: 0.75rem;
}
.report-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.kpi-card {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 9px;
  padding: 0.85rem;
}
.kpi-card.kpi-disputed {
  border-left: 4px solid var(--ch-red);
  background: #fffafa;
}
.kpi-card.kpi-undisputed {
  border-left: 4px solid var(--green-700);
  background: #f4fdf7;
}
.kpi-label {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--slate-600);
}
.kpi-value {
  font-size: 1.4rem;
  font-weight: 800;
  margin-top: 0.2rem;
}
.kpi-disputed .kpi-value {
  color: var(--ch-red);
}
.kpi-undisputed .kpi-value {
  color: var(--green-700);
}
.kpi-note {
  font-size: 0.75rem;
  color: var(--slate-600);
  margin-top: 0.2rem;
}

/* Flags list */
.flags-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.flag-item {
  border-radius: 8px;
  padding: 0.8rem 0.9rem;
  border: 1px solid transparent;
  font-size: 0.86rem;
}
.flag-item.red {
  background: var(--red-100);
  border-color: #fecaca;
  color: var(--red-800);
}
.flag-item.amber {
  background: var(--amber-100);
  border-color: #fde68a;
  color: var(--amber-800);
}
.flag-item.green {
  background: var(--green-100);
  border-color: #bbf7d0;
  color: var(--green-700);
}
.flag-title {
  font-weight: 800;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}
.flag-statute {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.7);
  white-space: nowrap;
}

/* Primary CTA Button */
.btn-cta-chf19 {
  width: 100%;
  background: var(--ch-red);
  color: #ffffff;
  border: none;
  border-radius: 10px;
  padding: 0.95rem 1.2rem;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(213, 43, 30, 0.28);
  transition: background 0.15s ease, transform 0.1s ease;
  text-align: center;
}
.btn-cta-chf19:hover {
  background: var(--ch-red-dark);
  transform: translateY(-1px);
}
.cta-subnote {
  font-size: 0.76rem;
  color: var(--slate-600);
  text-align: center;
  margin-top: 0.35rem;
}

/* Content Sections */
.content-section {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 1.75rem;
  margin-bottom: 2rem;
}
.content-section h2 {
  margin-top: 0;
  font-size: 1.35rem;
}
.content-section h3 {
  font-size: 1.08rem;
  margin-top: 1.25rem;
}

.niche-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.niche-card {
  border: 1px solid var(--slate-200);
  border-radius: 10px;
  padding: 1.1rem;
  background: var(--slate-50);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.niche-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}
.niche-card p {
  font-size: 0.86rem;
  color: var(--slate-600);
  margin: 0 0 0.85rem;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}
.modal-backdrop.open {
  display: flex;
}
.modal-card {
  background: #ffffff;
  border-radius: 14px;
  max-width: 780px;
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}
.beta-banner {
  background: var(--green-100);
  border: 1px solid #86efac;
  color: var(--green-700);
  padding: 0.9rem 1rem;
  border-radius: 9px;
  font-weight: 700;
  font-size: 0.92rem;
  margin-bottom: 1.15rem;
}
.letter-preview {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 8px;
  padding: 1.25rem;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.82rem;
  white-space: pre-wrap;
  max-height: 340px;
  overflow-y: auto;
  margin: 1rem 0;
  line-height: 1.45;
}
.modal-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.btn-primary {
  background: var(--ch-red);
  color: #fff;
  border: none;
  padding: 0.75rem 1.15rem;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}
.btn-secondary {
  background: var(--slate-100);
  color: var(--slate-800);
  border: 1px solid var(--slate-200);
  padding: 0.75rem 1.15rem;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}

/* Footer */
.site-footer {
  background: var(--slate-900);
  color: var(--slate-200);
  padding: 2.25rem 0;
  margin-top: 3rem;
  font-size: 0.85rem;
}
.site-footer a {
  color: #ffffff;
}
.disclaimer-box {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  margin-bottom: 1.25rem;
  color: #cbd5e1;
}

/* Print stylesheet for Swiss A4 Einschreiben */
@media print {
  body * {
    visibility: hidden;
  }
  #letter-modal,
  #letter-modal #printable-letter-area,
  #letter-modal #printable-letter-area * {
    visibility: visible;
  }
  #letter-modal {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    background: #fff;
    padding: 0;
  }
  #printable-letter-area {
    border: none;
    max-height: none;
    overflow: visible;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 10.5pt;
    line-height: 1.45;
    color: #000;
    padding: 15mm 18mm;
  }
}