@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Source+Serif+4:ital,wght@0,300;0,400;0,600;1,300;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --ink:        #1a1a18;
  --ink-soft:   #3d3d38;
  --ink-muted:  #6b6b62;
  --paper:      #f5f2eb;
  --paper-dark: #ede9df;
  --moss:       #3a5c3a;
  --moss-light: #5a8a5a;
  --fjord:      #2b4a6b;
  --fjord-light:#4a7aab;
  --rust:       #8b3a2a;
  --rust-light: #c05a40;
  --gold:       #c8940a;
  --border:     rgba(26,26,24,0.12);
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Source Serif 4', Georgia, serif;
  --font-mono:    'JetBrains Mono', monospace;
}

html { font-size: 17px; scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* GDPR */
#gdpr-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  z-index: 9999;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 300;
  border-top: 2px solid var(--moss);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}
#gdpr-banner.visible { transform: translateY(0); }
#gdpr-banner p { color: rgba(245,242,235,0.8); max-width: 65ch; }
#gdpr-banner a { color: var(--paper); }
.gdpr-actions { display: flex; gap: 0.75rem; flex-shrink: 0; }
.gdpr-btn {
  padding: 0.5rem 1.25rem;
  border: 1px solid rgba(245,242,235,0.4);
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.gdpr-btn:hover { background: rgba(245,242,235,0.1); border-color: rgba(245,242,235,0.7); }
.gdpr-btn.accept {
  background: var(--moss);
  border-color: var(--moss);
  color: #fff;
}
.gdpr-btn.accept:hover { background: var(--moss-light); border-color: var(--moss-light); }

/* HEADER */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 100;
}
.site-header .inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.logo span { color: var(--moss); }
.report-nav {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.report-nav a {
  color: var(--ink-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.report-nav a:hover { color: var(--ink); }

/* HERO */
.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 5rem 2rem 4rem;
  border-bottom: 1px solid var(--border);
}
.report-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--moss);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.report-tag::before {
  content: '';
  display: block;
  width: 2rem;
  height: 1px;
  background: var(--moss);
}
h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.subtitle {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.3rem);
  font-weight: 400;
  font-style: italic;
  color: var(--ink-soft);
  margin-bottom: 2.5rem;
  max-width: 60ch;
}
.meta {
  display: flex;
  gap: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  flex-wrap: wrap;
}
.meta span { display: flex; align-items: center; gap: 0.4rem; }

/* INGRESS */
.ingress {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
  border-bottom: 1px solid var(--border);
}
.ingress blockquote {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.45rem);
  font-weight: 400;
  font-style: italic;
  color: var(--ink-soft);
  line-height: 1.6;
  padding-left: 1.5rem;
  border-left: 3px solid var(--moss);
  max-width: 55ch;
}

/* MAIN CONTENT */
.content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* SECTIONS */
.section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border);
}
.section:last-child { border-bottom: none; }

.section-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 1.5rem;
  line-height: 1.25;
}
h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  margin: 2rem 0 0.75rem;
}
p { margin-bottom: 1.2rem; max-width: 68ch; }
p:last-child { margin-bottom: 0; }

/* METRIC CARDS */
.metric-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.metric-card {
  background: var(--paper-dark);
  border: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
}
.metric-card .label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
}
.metric-card .value {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.1;
}
.metric-card .note {
  font-size: 0.75rem;
  color: var(--ink-muted);
  margin-top: 0.3rem;
  font-family: var(--font-mono);
}

/* DATA TABLE */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}
.data-table th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  text-align: left;
  padding: 0.6rem 1rem 0.6rem 0;
  border-bottom: 2px solid var(--border);
  font-weight: 500;
}
.data-table td {
  padding: 0.65rem 1rem 0.65rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--ink-soft);
  vertical-align: top;
}
.data-table td:first-child { font-weight: 400; color: var(--ink); }
.data-table tr:last-child td {
  border-bottom: 2px solid var(--border);
  font-weight: 600;
  color: var(--ink);
}
.data-table .num { text-align: right; font-family: var(--font-mono); font-size: 0.85rem; }

/* CHARTS */
.chart-wrap {
  margin: 2.5rem 0;
  background: var(--paper-dark);
  border: 1px solid var(--border);
  padding: 1.5rem;
}
.chart-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.5rem;
}
.chart-note {
  font-size: 0.75rem;
  color: var(--ink-muted);
  margin-top: 0.75rem;
  font-style: italic;
}
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1rem;
  font-size: 0.78rem;
  color: var(--ink-muted);
  font-family: var(--font-mono);
}
.chart-legend span {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.leg-sq {
  width: 10px; height: 10px;
  display: inline-block;
  flex-shrink: 0;
}
.chart-placeholder {
  background: rgba(26,26,24,0.04);
  border: 1px dashed var(--border);
  padding: 3rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
}
canvas { display: block; }

/* CALLOUT */
.callout {
  background: var(--paper-dark);
  border-left: 3px solid var(--moss);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  max-width: 68ch;
}
.callout p { margin: 0; font-size: 0.95rem; color: var(--ink-soft); }
.callout.warning { border-left-color: var(--rust); }
.callout.highlight { border-left-color: var(--gold); }

/* SOLUTION CARDS */
.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}
@media (max-width: 640px) { .solution-grid { grid-template-columns: 1fr; } }
.solution-card {
  border: 1px solid var(--border);
  padding: 1.75rem;
  position: relative;
}
.solution-card .model-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.75rem;
}
.solution-card h3 { margin-top: 0; font-size: 1.05rem; }
.solution-card ul {
  margin: 0.75rem 0 0 1rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.solution-card ul li { margin-bottom: 0.4rem; }
.solution-card.model-a { border-top: 3px solid var(--moss); }
.solution-card.model-b { border-top: 3px solid var(--fjord); }

/* PROS CONS */
.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1rem 0;
  font-size: 0.85rem;
}
@media (max-width: 500px) { .pros-cons { grid-template-columns: 1fr; } }
.pros, .cons {
  padding: 1rem;
  background: var(--paper-dark);
}
.pros-cons h4 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.pros h4 { color: var(--moss); }
.cons h4 { color: var(--rust); }
.pros-cons ul { margin-left: 1rem; color: var(--ink-soft); }
.pros-cons ul li { margin-bottom: 0.3rem; }

/* SOURCES */
.sources { font-size: 0.82rem; color: var(--ink-muted); }
.sources h3 { font-size: 0.9rem; color: var(--ink-soft); margin-top: 1.5rem; }
.sources ul { margin-left: 1.2rem; }
.sources ul li { margin-bottom: 0.4rem; line-height: 1.5; }

/* FOOTER */
.site-footer {
  border-top: 2px solid var(--border);
  padding: 3rem 2rem;
  margin-top: 4rem;
}
.site-footer .inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
  letter-spacing: 0.06em;
}
.footer-brand strong { color: var(--ink-soft); display: block; margin-bottom: 0.3rem; }
.footer-note {
  font-size: 0.78rem;
  color: var(--ink-muted);
  max-width: 45ch;
  line-height: 1.6;
}

/* PRINT */
@media print {
  #gdpr-banner, .site-header nav, .report-nav { display: none; }
  body { background: white; }
}

/* RESPONSIVE */
@media (max-width: 600px) {
  .hero { padding: 3rem 1.25rem 2.5rem; }
  .content { padding: 0 1.25rem; }
  .metric-row { grid-template-columns: 1fr 1fr; }
  .site-header .inner { padding: 0 1.25rem; }
  .report-nav { display: none; }
  #gdpr-banner { flex-direction: column; padding: 1.25rem; }
  .gdpr-actions { width: 100%; }
  .gdpr-btn { flex: 1; text-align: center; }
}