/* Fiserv | Prosperity Review Site — Editorial Design System */

:root {
  --bg: #FAF8F5;
  --bg-card: #ffffff;
  --bg-muted: #F2EFE9;
  --ink: #1A1A1A;
  --ink-80: rgba(26,26,26,0.82);
  --ink-60: rgba(26,26,26,0.62);
  --ink-40: rgba(26,26,26,0.4);
  --ink-20: rgba(26,26,26,0.2);
  --rule: rgba(26,26,26,0.12);
  --rule-strong: rgba(26,26,26,0.22);
  --cobalt: #1E3A6E;
  --cobalt-light: #2E58A0;
  --warm: #A65F16;
  --critical: #A62114;
  --success: #3F6B3A;
  --font-sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --font-serif: 'IBM Plex Serif', Georgia, serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', Consolas, monospace;
  --max-w: 1180px;
  --max-w-text: 780px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--cobalt); text-decoration: none; border-bottom: 1px solid rgba(30,58,110,0.25); transition: all 0.15s ease; }
a:hover { border-bottom-color: var(--cobalt); background: rgba(30,58,110,0.04); }

/* ─── Top bar ─── */
.topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: 0;
  z-index: 40;
}
.topbar-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px 40px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  flex-wrap: wrap;
}
.topbar-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.topbar-title .sep { color: var(--ink-40); margin: 0 8px; font-weight: 400; }
.topbar-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-60);
}

/* ─── Tab nav ─── */
.tabnav {
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: 59px;
  z-index: 30;
}
.tabnav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}
.tab-btn {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 16px 18px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--ink-60);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active {
  color: var(--cobalt);
  border-bottom-color: var(--cobalt);
}
.tab-btn .tab-num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-40);
  margin-right: 8px;
  letter-spacing: 0.08em;
}
.tab-btn.active .tab-num { color: var(--cobalt); opacity: 0.6; }

/* ─── Main content area ─── */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 40px 96px;
}
.tab-panel {
  display: none;
  animation: fadein 0.38s ease;
}
.tab-panel.active { display: block; }

@keyframes fadein {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Section headers ─── */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-60);
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 40px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  max-width: 900px;
}
.section-lede {
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink-80);
  max-width: var(--max-w-text);
  margin-bottom: 40px;
}

/* ─── Overview tab ─── */
.overview-header { border-bottom: 1px solid var(--rule); padding-bottom: 40px; margin-bottom: 48px; }
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 48px;
}
.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.kpi-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-60);
}
.kpi-value {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 40px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--cobalt);
}
.kpi-value.critical { color: var(--critical); }
.kpi-value.warm { color: var(--warm); }
.kpi-note {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink-60);
}

.findings {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 36px 32px;
  margin-bottom: 36px;
}
.findings h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}
.findings ul { list-style: none; padding: 0; }
.findings ul li {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.55;
  padding: 12px 0 12px 28px;
  border-bottom: 1px solid var(--rule);
  position: relative;
  color: var(--ink-80);
}
.findings ul li:last-child { border-bottom: none; }
.findings ul li::before {
  content: "→";
  font-family: var(--font-mono);
  position: absolute;
  left: 0;
  top: 12px;
  color: var(--cobalt);
  font-size: 15px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 12px 20px;
  border: 1px solid var(--cobalt);
  color: var(--cobalt);
  background: transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}
.btn:hover { background: var(--cobalt); color: white; border-bottom-color: var(--cobalt); }
.btn.primary { background: var(--cobalt); color: white; }
.btn.primary:hover { background: var(--cobalt-light); border-color: var(--cobalt-light); }
.btn.ghost { border-color: var(--rule-strong); color: var(--ink-80); }
.btn.ghost:hover { border-color: var(--ink); background: var(--ink); color: var(--bg); }

/* ─── Markdown-rendered content ─── */
.prose {
  max-width: var(--max-w-text);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-80);
}
.prose.wide { max-width: none; }
.prose h1 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 36px;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 20px;
  line-height: 1.12;
}
.prose h2 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 44px 0 16px;
  line-height: 1.2;
  padding-top: 8px;
  border-top: 1px solid var(--rule);
  padding-top: 28px;
}
.prose h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.prose h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 30px 0 12px;
  line-height: 1.25;
}
.prose h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--cobalt);
  margin: 22px 0 8px;
}
.prose p { margin: 0 0 16px; }
.prose strong { font-weight: 600; color: var(--ink); }
.prose em { font-style: italic; color: var(--ink); }
.prose ul, .prose ol { margin: 0 0 18px 22px; }
.prose ul li, .prose ol li { margin-bottom: 8px; }
.prose blockquote {
  border-left: 3px solid var(--cobalt);
  padding: 8px 0 8px 22px;
  margin: 22px 0;
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--ink-80);
  font-style: italic;
}
.prose hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 36px 0;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-muted);
  color: var(--ink);
  padding: 2px 6px;
  border-radius: 2px;
}
.prose pre {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  background: var(--bg-muted);
  border: 1px solid var(--rule);
  padding: 16px 18px;
  margin: 16px 0;
  overflow-x: auto;
  border-radius: 2px;
  position: relative;
}
.prose pre code { background: none; padding: 0; font-size: 13px; }
.prose table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 14px;
  margin: 20px 0;
}
.prose table th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1.5px solid var(--ink);
  font-weight: 600;
  color: var(--ink);
  background: transparent;
}
.prose table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  color: var(--ink-80);
}
.prose table tr:last-child td { border-bottom: 1.5px solid var(--ink); }

.prose .mermaid {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 20px;
  margin: 24px 0;
  border-radius: 2px;
  text-align: center;
  overflow-x: auto;
}

.pull-quote {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink);
  margin: 32px 0;
  padding: 28px 32px;
  background: var(--bg-card);
  border-left: 4px solid var(--cobalt);
  font-style: italic;
}
.pull-quote-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--warm);
  display: block;
  margin-bottom: 10px;
  font-style: normal;
}

/* ─── Subnav / pill tabs ─── */
.subnav {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 30px;
  overflow-x: auto;
}
.subnav-btn {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 16px;
  background: transparent;
  border: none;
  color: var(--ink-60);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.subnav-btn.active {
  color: var(--cobalt);
  border-bottom-color: var(--cobalt);
}
.subnav-btn:hover { color: var(--ink); }
.subpanel { display: none; animation: fadein 0.3s ease; }
.subpanel.active { display: block; }

.anchor-nav {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 18px 22px;
  margin-bottom: 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.anchor-nav-label {
  color: var(--ink-40);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 10px;
  align-self: center;
  margin-right: 8px;
}
.anchor-nav a {
  color: var(--ink-60);
  border-bottom: none;
  padding: 2px 4px;
}
.anchor-nav a:hover { color: var(--cobalt); background: none; }

.graph-banner {
  background: var(--cobalt);
  color: #F3E8D4;
  padding: 20px 26px;
  margin-bottom: 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  align-items: center;
  justify-content: space-between;
}
.graph-banner .graph-stat { color: #F3E8D4; opacity: 0.82; }
.graph-banner .graph-stat strong { color: white; opacity: 1; font-weight: 500; }
.graph-banner a { color: white; border-bottom: 1px solid rgba(255,255,255,0.35); font-weight: 500; }
.graph-banner a:hover { background: rgba(255,255,255,0.08); border-bottom-color: white; }

/* ─── BMC-specific ─── */
.bmc-health-table {
  font-family: var(--font-sans);
  font-size: 14px;
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0 32px;
  background: var(--bg-card);
  border: 1px solid var(--rule);
}
.bmc-health-table th {
  background: var(--cobalt);
  color: white;
  text-align: left;
  padding: 12px 14px;
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.bmc-health-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 13px;
}
.bmc-health-table td:first-child { font-family: var(--font-sans); font-weight: 500; color: var(--ink); }
.bmc-health-table tr:last-child { background: var(--bg-muted); font-weight: 600; }
.bmc-health-table tr:last-child td { border-bottom: none; }

.sbpi-chart {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 32px;
  margin: 20px 0;
}
.sbpi-row {
  display: grid;
  grid-template-columns: 220px 80px 1fr;
  gap: 16px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
}
.sbpi-row:last-child { border-bottom: none; }
.sbpi-dim {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
}
.sbpi-dim .weight {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-40);
  display: block;
  letter-spacing: 0.06em;
}
.sbpi-score {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  color: var(--cobalt);
  text-align: right;
}
.sbpi-bar-track {
  height: 10px;
  background: var(--bg-muted);
  border-radius: 1px;
  position: relative;
  overflow: hidden;
}
.sbpi-bar-fill {
  height: 100%;
  background: var(--cobalt);
  transition: width 0.6s ease;
}
.sbpi-bar-fill.low { background: var(--critical); }
.sbpi-bar-fill.mid { background: var(--warm); }
.sbpi-composite {
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 22px 0 10px;
  border-top: 1.5px solid var(--ink);
  margin-top: 14px;
}
.sbpi-composite-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-60);
}
.sbpi-composite-value {
  font-family: var(--font-sans);
  font-size: 44px;
  font-weight: 600;
  color: var(--critical);
  letter-spacing: -0.02em;
}
.sbpi-composite-note {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--ink-60);
  font-style: italic;
}

/* ─── Viz hub cards ─── */
.viz-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 22px;
  margin-top: 24px;
}
.viz-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.2s ease;
}
.viz-card:hover { border-color: var(--cobalt); }
.viz-card-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--warm);
  text-transform: uppercase;
}
.viz-card-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.viz-card-desc {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink-60);
  flex: 1;
}
.viz-card-stats {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-40);
}

/* ─── NotebookLM prompt cards ─── */
.prompt-block {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 0;
  margin-bottom: 28px;
  overflow: hidden;
}
.prompt-head {
  padding: 24px 28px 18px;
  border-bottom: 1px solid var(--rule);
}
.prompt-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--warm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.prompt-title {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 20px;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.prompt-body { padding: 18px 28px 28px; }
.prompt-meta {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--ink-60);
  margin-bottom: 14px;
  line-height: 1.5;
}
.prompt-meta strong { color: var(--ink-80); font-weight: 500; }
.prompt-wrap {
  position: relative;
  background: var(--bg-muted);
  border: 1px solid var(--rule);
  padding: 18px 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.55;
  color: var(--ink-80);
  white-space: pre-wrap;
  word-break: break-word;
  margin-top: 10px;
  max-height: 320px;
  overflow-y: auto;
}
.prompt-wrap.expanded { max-height: none; }
.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.04em;
  font-weight: 500;
  padding: 6px 12px;
  background: var(--bg-card);
  color: var(--cobalt);
  border: 1px solid var(--cobalt);
  cursor: pointer;
  transition: all 0.15s ease;
}
.copy-btn:hover { background: var(--cobalt); color: white; }
.copy-btn.copied { background: var(--success); color: white; border-color: var(--success); }
.expand-btn {
  font-family: var(--font-sans);
  font-size: 11px;
  background: transparent;
  border: none;
  color: var(--ink-60);
  cursor: pointer;
  margin-top: 10px;
  padding: 0;
}
.expand-btn:hover { color: var(--cobalt); }

/* ─── Artifacts index table ─── */
.artifacts-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 14px;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  margin-top: 20px;
}
.artifacts-table th {
  background: var(--ink);
  color: var(--bg);
  padding: 12px 14px;
  text-align: left;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.artifacts-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.artifacts-table td code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg-muted);
  padding: 2px 6px;
  border-radius: 2px;
  color: var(--ink);
}
.artifacts-table .artifact-size { font-family: var(--font-mono); font-size: 12px; color: var(--ink-60); white-space: nowrap; }
.artifacts-table .artifact-type {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warm);
}

/* ─── Question cards ─── */
.question-card {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 30px 32px;
  margin-bottom: 24px;
}
.question-card-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--warm);
  margin-bottom: 10px;
  text-transform: uppercase;
}
.question-card h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 14px;
}
.question-card p {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink-80);
  margin-bottom: 18px;
}
.question-card textarea {
  width: 100%;
  min-height: 80px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  padding: 14px 16px;
  background: var(--bg);
  border: 1px dashed var(--rule-strong);
  color: var(--ink-80);
  resize: vertical;
  outline: none;
}
.question-card textarea::placeholder { color: var(--ink-40); font-style: italic; }
.question-card textarea:focus { border-color: var(--cobalt); border-style: solid; }
.question-notice {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--ink-40);
  margin-top: 8px;
  font-style: italic;
}

/* ─── Footer ─── */
.site-footer {
  max-width: var(--max-w);
  margin: 64px auto 0;
  padding: 30px 40px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-40);
  letter-spacing: 0.06em;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  text-transform: uppercase;
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
  main, .topbar-inner, .tabnav-inner, .site-footer { padding-left: 24px; padding-right: 24px; }
  .section-title { font-size: 32px; }
  .overview-grid { grid-template-columns: 1fr; }
  .sbpi-row { grid-template-columns: 140px 60px 1fr; gap: 10px; }
  .kpi-value { font-size: 32px; }
}

@media (max-width: 600px) {
  .topbar-inner { padding: 14px 18px; }
  .tabnav-inner { padding: 0 8px; }
  main, .site-footer { padding-left: 18px; padding-right: 18px; }
  .tab-btn { padding: 14px 12px; font-size: 12px; }
  .tab-btn .tab-num { display: none; }
  .prose { font-size: 16px; }
  .section-title { font-size: 26px; }
  .question-card { padding: 22px; }
  .site-footer { flex-direction: column; align-items: flex-start; }
}

/* Print-specific */
@media print {
  .topbar, .tabnav, .site-footer { display: none; }
  .tab-panel { display: block !important; page-break-after: always; }
}