:root {
  --brpi-ink: #1c2a24;
  --brpi-muted: #5a6b63;
  --brpi-accent: #0f6a5a;
  --brpi-accent-soft: #d7efe8;
  --brpi-warn: #7a4b00;
  --brpi-warn-bg: #fff4df;
  --brpi-paper: #f7faf8;
  --brpi-line: #d5e0db;
}

html, body {
  min-height: 100%;
}

body {
  color: var(--brpi-ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #e7f4ef 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #eef2ea 0%, transparent 50%),
    var(--brpi-paper);
  display: flex;
  flex-direction: column;
}

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  z-index: 1000;
  background: #fff;
  padding: 0.5rem 0.75rem;
}

.safety-banner {
  background: var(--brpi-warn-bg);
  color: var(--brpi-warn);
  border-bottom: 1px solid #efd7a4;
  font-size: 0.92rem;
}

.eyebrow {
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--brpi-accent);
  font-weight: 600;
}

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

@media (min-width: 768px) {
  .concept-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.concept-grid > div,
.mode-panel {
  border: 1px solid var(--brpi-line);
  border-radius: 0.75rem;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.72);
}

.concept-card-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}

.axis-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
  color: var(--brpi-accent);
  background: var(--brpi-accent-soft);
  border-radius: 0.55rem;
}

.mode-panel {
  display: flex;
  flex-direction: column;
}

.mode-panel p {
  flex: 1 1 auto;
  color: var(--brpi-muted);
}

.mode-cta {
  margin-top: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.btn-primary {
  --bs-btn-bg: var(--brpi-accent);
  --bs-btn-border-color: var(--brpi-accent);
  --bs-btn-hover-bg: #0c574a;
  --bs-btn-hover-border-color: #0c574a;
}

.btn-outline-primary {
  --bs-btn-color: var(--brpi-accent);
  --bs-btn-border-color: var(--brpi-accent);
  --bs-btn-hover-bg: var(--brpi-accent);
  --bs-btn-hover-border-color: var(--brpi-accent);
}

.plot-box {
  min-height: 320px;
  background: #fff;
  border: 1px solid var(--brpi-line);
  border-radius: 0.5rem;
}

.plot-box-tall {
  min-height: 420px;
}

.plot-caption {
  font-size: 0.85rem;
  color: var(--brpi-muted);
  margin-top: 0.35rem;
}

.review-grid dt {
  font-weight: 600;
}

.form-check-input:checked {
  background-color: var(--brpi-accent);
  border-color: var(--brpi-accent);
}

@media print {
  @page {
    size: A4 portrait;
    margin: 14mm 16mm;
  }

  .site-header,
  .site-footer,
  .safety-banner,
  .no-print,
  .navbar,
  .skip-link {
    display: none !important;
  }

  html,
  body {
    width: 100%;
    background: #fff !important;
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  body.report-page {
    display: block;
  }

  main.container {
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  .report {
    max-width: 178mm;
    margin: 0 auto;
    padding: 0;
    font-size: 10.5pt;
    line-height: 1.45;
  }

  .print-doc-header {
    display: block !important;
    text-align: center;
    margin: 0 auto 1rem;
    padding-bottom: 0.65rem;
    border-bottom: 1px solid #bbb;
  }

  .print-doc-eyebrow {
    font-size: 9pt;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #0f6a5a;
    margin: 0 0 0.25rem;
  }

  .print-doc-title {
    font-size: 16pt;
    margin: 0 0 0.35rem;
  }

  .print-doc-meta {
    font-size: 9pt;
    color: #555;
    margin: 0;
  }

  .report section,
  .report-section {
    page-break-inside: avoid;
    break-inside: avoid;
    margin-bottom: 0.85rem;
  }

  .report-section-plots {
    page-break-before: auto;
  }

  .report .h4,
  .report h2 {
    font-size: 11.5pt;
    margin-bottom: 0.35rem;
  }

  .report p,
  .report li {
    orphans: 3;
    widows: 3;
  }

  .report .display-6 {
    font-size: 20pt;
    text-align: center;
    margin-bottom: 0.25rem;
  }

  .alert {
    border: 1px solid #ccc !important;
    background: #f7f7f7 !important;
    color: #000 !important;
    padding: 0.45rem 0.6rem;
    font-size: 9pt;
    margin-bottom: 0.75rem;
  }

  .table {
    width: 100%;
    font-size: 9pt;
  }

  .table-responsive {
    overflow: visible !important;
  }

  .plot-box {
    width: 100% !important;
    max-width: 178mm;
    height: 58mm !important;
    min-height: 0 !important;
    margin: 0.35rem auto 0;
    overflow: hidden;
    border: 1px solid #bbb;
    border-radius: 0;
    page-break-inside: avoid;
    break-inside: avoid;
  }

  .plot-box-tall {
    height: 68mm !important;
  }

  .plot-box .js-plotly-plot,
  .plot-box .plot-container,
  .plot-box .svg-container {
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    margin: 0 auto !important;
  }

  .plot-caption {
    text-align: center;
    font-size: 8.5pt;
    margin-top: 0.2rem;
  }

  .badge {
    border: 1px solid #666;
    color: #000 !important;
    background: #eee !important;
  }
}

.print-doc-header {
  display: none;
}

.reset-bar {
  margin: 0 0 1.25rem;
  padding: 0.75rem 1rem;
  border: 1px dashed var(--brpi-line);
  border-radius: 0.65rem;
  background: rgba(255, 255, 255, 0.55);
}

.reset-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.reset-hint {
  font-size: 0.9rem;
}