/* =========================================
   FP&A Portfolio — Styles
   Minimal, executive-friendly, Apple/consulting-inspired
   ========================================= */

:root {
  --bg: #ffffff;
  --bg-muted: #f6f8fb;
  --text: #0b1220;
  --muted: #4a5568;       /* deepened for WCAG AA at body sizes */
  --border: rgba(12, 23, 45, 0.10);
  --shadow: 0 10px 30px rgba(11, 18, 32, 0.08);
  --shadow-soft: 0 8px 18px rgba(11, 18, 32, 0.06);

  /* Neutral + muted accent (blue-green) */
  --accent: #0f766e;     /* muted teal */
  --accent-2: #1b4d7a;   /* muted blue */
  --accent-soft: rgba(15, 118, 110, 0.10);

  --radius: 18px;
  --radius-sm: 14px;
  --max: 1120px;

  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

/* Base */
* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
p { margin: 0; }
h1, h2, h3 { margin: 0; letter-spacing: -0.02em; }
img { max-width: 100%; display: block; }

.container {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  padding: 10px 12px;
  background: var(--text);
  color: white;
  border-radius: 10px;
  z-index: 9999;
}
.skip-link:focus { left: 12px; }

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--border);
  will-change: transform;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px var(--accent-soft);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}
.nav-links a { padding: 8px 6px; border-radius: 10px; }
.nav-links a:hover { background: rgba(11,18,32,0.04); color: var(--text); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 40px;
  border: 1px solid var(--border);
  background: white;
  border-radius: 12px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  margin: 6px auto;
  border-radius: 2px;
}

/* Mobile menu */
.mobile-menu {
  display: none;
  border-top: 1px solid var(--border);
  background: rgba(255,255,255,0.97);
}
.mobile-menu-inner {
  padding: 14px 0 18px 0;
  display: grid;
  gap: 10px;
}
.mobile-link {
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: white;
  color: var(--text);
}
.mobile-cta { display: flex; gap: 10px; padding-top: 6px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease, border-color 140ms ease;
  user-select: none;
}
.btn:active { transform: translateY(1px); }
.btn[aria-disabled="true"] { opacity: 0.55; pointer-events: none; }

.btn-solid {
  background: var(--text);
  color: white;
  box-shadow: var(--shadow-soft);
}
.btn-solid:hover { box-shadow: var(--shadow); }

.btn-ghost {
  background: white;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: rgba(12, 23, 45, 0.18); box-shadow: 0 6px 18px rgba(11,18,32,0.06); }

/* Sections */
.section { padding: 76px 0; }
.section-muted { background: var(--bg-muted); }

.section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}
.section-head h2 {
  font-size: 32px;
  line-height: 1.1;
}
.section-subhead {
  color: var(--muted);
  max-width: 70ch;
}

/* Hero */
.hero {
  padding: 64px 0 42px 0;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: start;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.7);
}

.hero-title {
  margin-top: 16px;
  font-size: 44px;
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.accent { color: var(--accent-2); }

.hero-subtitle {
  margin-top: 14px;
  font-size: 16px;
  color: var(--muted);
}

.hero-one-liner {
  margin-top: 10px;
  font-size: 16px;
  color: var(--text);
  max-width: 64ch;
}

.hero-actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-metrics {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.metric-card {
  padding: 12px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: white;
}
.metric-label { font-size: 12px; color: var(--muted); }
.metric-value { font-weight: 650; font-size: 13px; margin-top: 6px; }

/* Hero panel */
.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: white;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px;
  border-bottom: 1px solid var(--border);
}
.panel-title { font-weight: 700; }
.panel-chip {
  font-size: 12px;
  color: var(--accent);
  padding: 6px 10px;
  background: var(--accent-soft);
  border: 1px solid rgba(15,118,110,0.18);
  border-radius: 999px;
}
.panel-body { padding: 16px; display: grid; gap: 14px; }

.panel-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.panel-kpi {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(246,248,251,0.6);
}
.kpi-label { font-size: 12px; color: var(--muted); }
.kpi-value { font-weight: 650; margin-top: 6px; }

.panel-map {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: white;
}
.node {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(246,248,251,0.7);
  font-weight: 650;
  font-size: 13px;
}
.link {
  height: 10px;
  width: 2px;
  background: rgba(11,18,32,0.10);
  margin-left: 18px;
  border-radius: 2px;
}
.panel-note {
  color: var(--muted);
  font-size: 13px;
}

/* Cards */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 1px 0 rgba(11,18,32,0.02);
}

.card-icon {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(27,77,122,0.10);
  border: 1px solid rgba(27,77,122,0.18);
  margin-bottom: 12px;
  font-weight: 800;
}
.card h3 { font-size: 16px; }
.card p { margin-top: 8px; color: var(--muted); font-size: 14px; }

/* Projects */
.project-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.project-card {
  grid-column: span 6;
  background: white;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  padding: 18px;
  box-shadow: var(--shadow-soft);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.project-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: rgba(12, 23, 45, 0.16);
}

.project-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.project-label {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}
.project-title { font-size: 18px; line-height: 1.2; }

.pill {
  font-size: 12px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(246,248,251,0.8);
  color: var(--text);
  white-space: nowrap;
}

.project-pitch {
  margin-top: 10px;
  color: var(--text);
  font-weight: 520;
}

.project-meta {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}
.meta-block {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(246,248,251,0.65);
}
.meta-title {
  font-size: 12px;
  color: var(--muted);
}
.meta-text {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text);
  font-weight: 520;
}

.bullets {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.bullet {
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: white;
  font-size: 13px;
  color: var(--text);
}

.project-actions {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Note */
.note {
  margin-top: 18px;
  display: inline-flex;
  gap: 10px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.7);
  color: var(--muted);
  font-size: 13px;
}
.note-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
}

/* System view */
.system-wrap {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  align-items: start;
}

.system-visual {
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: white;
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 12px;
}

.sys-col {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 10px;
}

.sys-card {
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(246,248,251,0.65);
}
.sys-card-strong {
  background: rgba(15,118,110,0.10);
  border-color: rgba(15,118,110,0.20);
}

.sys-title { font-weight: 750; }
.sys-text { margin-top: 6px; color: var(--muted); font-size: 13px; }

.sys-arrow {
  width: 32px;
  height: 32px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  background: white;
  color: var(--muted);
  font-weight: 800;
}

.system-copy {
  display: grid;
  gap: 12px;
}
.system-statement {
  font-size: 18px;
  font-weight: 720;
  letter-spacing: -0.02em;
}
.system-plain {
  color: var(--muted);
  font-size: 14px;
  max-width: 58ch;
}
.system-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* Credibility section */
.cred-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.tag {
  font-size: 12px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(246,248,251,0.8);
  color: var(--text);
}

.muted { color: var(--muted); margin-top: 10px; font-size: 14px; }
.closing { font-size: 14px; color: var(--text); }
.smallprint { margin-top: 12px; font-size: 12px; color: var(--muted); }

/* Link list */
.link-list { display: grid; gap: 10px; margin-top: 12px; }
.link-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: white;
}
.link-item:hover { box-shadow: 0 8px 18px rgba(11,18,32,0.06); border-color: rgba(12, 23, 45, 0.16); }
.link-arrow { color: var(--muted); }

/* Back to top */
.to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.97);
  display: grid;
  place-items: center;
  box-shadow: 0 10px 30px rgba(11,18,32,0.10);
  opacity: 0.0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
}
.to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Reveal animations (subtle) */
.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 550ms ease, transform 550ms ease;
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-metrics { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .project-card { grid-column: span 12; }
  .system-wrap { grid-template-columns: 1fr; }
  .cred-grid { grid-template-columns: 1fr; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: inline-block; }
  .mobile-menu.is-open { display: block; }
}

@media (max-width: 560px) {
  .hero-title { font-size: 36px; }
  .grid-4 { grid-template-columns: 1fr; }
  .bullets { grid-template-columns: 1fr; }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transition: none; transform: none; opacity: 1; }
  .project-card { transition: none; }
  .to-top { transition: none; }
}

/* Unit Economics Module Enhancements */

/* Fix helper icon alignment with headers */
.section-header-with-help {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

/* ------------------------------------------------------------------
   Global tooltip bubble (used by the JS tooltip engine in modules)
   Some modules disable the legacy .help-icon:hover::after tooltip to
   avoid clipping inside sidebars/overflow containers. Those pages rely
   on this #tt-root bubble + initTooltips() in their module script.
------------------------------------------------------------------- */

#tt-root {
  position: fixed;
  z-index: 99999;
  pointer-events: none;
  padding: 9px 13px;
  background: rgba(11, 18, 32, 0.96);
  color: #f6f8fb;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.55;
  border-radius: 9px;
  white-space: normal;
  width: 270px;
  max-width: calc(100vw - 24px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.28);
  text-align: left;
  opacity: 0;
  transition: opacity 120ms ease;
  font-family: var(--font-sans);
}

#tt-root.tt-visible { opacity: 1; }

.module-section-title {
  margin: 0;
  line-height: 1.2;
}

.help-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(15, 118, 110, 0.10);
  border: 1px solid rgba(15, 118, 110, 0.20);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  cursor: help;
  position: relative;
  flex-shrink: 0;
}

.help-icon::before {
  content: '?';
  line-height: 1;
}

.help-icon:hover::after {
  content: attr(data-help);
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 8px;
  padding: 12px 16px;
  background: var(--text);
  color: white;
  font-size: 13px;
  line-height: 1.5;
  border-radius: 10px;
  white-space: normal;
  width: 320px;
  z-index: 1000;
  box-shadow: var(--shadow);
  font-weight: 400;
  text-align: left;
}

/* Inline term helper */
.term-helper {
  position: relative;
  cursor: help;
  border-bottom: 1px dotted rgba(15, 118, 110, 0.4);
  color: var(--accent);
}

.term-helper:hover::after {
  content: attr(data-definition);
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 6px;
  padding: 10px 14px;
  background: var(--text);
  color: white;
  font-size: 12px;
  line-height: 1.5;
  border-radius: 8px;
  white-space: normal;
  width: 260px;
  z-index: 1000;
  box-shadow: var(--shadow);
  font-weight: 400;
}

/* Remove unprofessional ALL-CAPS from table headers */
.data-table th,
.sensitivity-table th {
  text-transform: none;
  letter-spacing: 0.01em;
}

/* =========================================
   INDEX ENHANCEMENTS
   Added: Start Here, card meta, hover preview,
   About, Contact, Credibility strip
   ========================================= */

/* ── Start Here section ────────────────────────── */
.start-here-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 8px;
}
.start-step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: box-shadow 160ms ease, border-color 160ms ease;
}
.start-step:hover {
  border-color: rgba(15,118,110,0.30);
  box-shadow: 0 4px 18px rgba(11,18,32,0.08);
}
.start-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid rgba(15,118,110,0.20);
  color: var(--accent);
  font-size: 13px;
  font-weight: 750;
  flex-shrink: 0;
}
.start-step-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}
.start-step-why {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
  line-height: 1.55;
  flex: 1;
}
.start-step .btn { align-self: flex-start; margin-top: 4px; }
@media (max-width: 720px) {
  .start-here-grid { grid-template-columns: 1fr; }
}

/* ── Problem grid enhancements ─────────────────── */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 8px;
}
.problem-card {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 20px 22px 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: box-shadow 160ms ease, border-color 160ms ease;
  position: relative;
  overflow: hidden;
}
.problem-card:hover {
  border-color: rgba(15,118,110,0.35);
  box-shadow: 0 4px 20px rgba(11,18,32,0.08);
}
.problem-statement {
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  margin: 0 0 14px 0;
  font-style: italic;
  font-weight: 500;
}
.problem-card .btn {
  align-self: flex-start;
  white-space: nowrap;
  position: relative;
  z-index: 3;
}

/* Trust micro-lines */
.card-meta {
  display: grid;
  gap: 5px;
  margin-bottom: 14px;
  padding: 10px 12px;
  background: var(--bg-muted);
  border-radius: 10px;
  border: 1px solid var(--border);
}
.card-meta-row {
  display: flex;
  gap: 6px;
  font-size: 12px;
  line-height: 1.4;
}
.card-meta-label {
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}
.card-meta-value {
  color: var(--text);
}

/* ── Hover preview overlay ─────────────────────── */
.card-preview {
  position: absolute;
  inset: 0;
  background: rgba(11,18,32,0.93);
  border-radius: var(--radius);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  z-index: 1;
}
.problem-card:hover .card-preview { opacity: 1; }
.card-preview-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.card-preview-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.42);
}
.card-preview-value {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  line-height: 1.45;
}
.card-preview-kpi {
  font-size: 13px;
  font-weight: 700;
  color: #6ee7b7;
  line-height: 1.45;
}
@media (hover: none) { .card-preview { display: none; } }
@media (max-width: 640px) {
  .problem-grid { grid-template-columns: 1fr; }
  .card-preview { display: none; }
}

/* ── Credibility strip ─────────────────────────── */
.cred-strip {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.cred-strip-label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-shrink: 0;
}
.cred-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
}
.cred-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ── About section ─────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}
.about-body { display: grid; gap: 14px; }
.about-lead {
  font-size: 17px;
  font-weight: 520;
  line-height: 1.6;
  color: var(--text);
  margin: 0;
}
.about-sub {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
}
.about-bullets { display: grid; gap: 8px; margin-top: 4px; }
.about-bullet {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text);
  font-weight: 520;
  line-height: 1.5;
}
.about-bullet-icon {
  width: 22px;
  height: 22px;
  border-radius: 8px;
  background: var(--accent-soft);
  border: 1px solid rgba(15,118,110,0.18);
  display: grid;
  place-items: center;
  font-size: 11px;
  flex-shrink: 0;
  color: var(--accent);
  font-weight: 800;
}
.about-side { display: grid; gap: 10px; }
.about-stat {
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-soft);
}
.about-stat-value {
  font-size: 28px;
  font-weight: 750;
  letter-spacing: -0.03em;
  color: var(--accent-2);
}
.about-stat-label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}
@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-side { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .about-side { grid-template-columns: 1fr; }
}

/* ── Contact section ───────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: box-shadow 160ms, border-color 160ms;
  text-decoration: none;
  color: var(--text);
}
.contact-card:hover {
  box-shadow: var(--shadow);
  border-color: rgba(12,23,45,0.16);
}
.contact-card-label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.contact-card-value { font-size: 15px; font-weight: 650; }
.contact-card-arrow { margin-top: auto; font-size: 18px; color: var(--muted); }
@media (max-width: 640px) { .contact-grid { grid-template-columns: 1fr; } }

/* ═══════════════════════════════════════════════════
   SHARED MODULE HEADER SYSTEM
   Used by ALL module pages above "Data needed" strip.
   Keep these here so per-module <style> blocks stay minimal.
════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════
   STANDARDIZED MODULE HERO HEADER
   Uniform height & layout across ALL module pages.
   Structure: eyebrow → h1 title → subtitle (2-line clamp) → chips row
════════════════════════════════════════════════════ */

.module-hero {
  padding: 40px 0 36px 0;
  border-bottom: 1px solid var(--border);
  /* Fixed height — every module header is exactly the same size.
     Added 34px for .module-hero-meta demo pill row → 284px */
  height: 284px;
  box-sizing: border-box;
  overflow: hidden;
}

/* Eyebrow — small uppercase label above the title */
.module-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

/* Keep .module-label as alias for legacy markup that still uses it */
.module-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

/* Title */
.module-title {
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 10px 0;
}

/* Subtitle — fixed at exactly 2 lines so it never changes the header height */
.module-subtitle {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.5;
  margin: 0 0 0 0;
  max-width: 70ch;
  height: calc(15px * 1.5 * 2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Legacy classes — keep so any existing markup using them doesn't break */
.module-pill { display: none; }
.module-problem { display: none; }
.module-role { display: none; }

/* Feature chips row — single line, horizontal scroll, never wraps */
.feature-chips {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin-top: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 2px; /* prevent clipping scroll indicator */
}
.feature-chips::-webkit-scrollbar { display: none; }

.chip {
  font-size: 12px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(246,248,251,0.8);
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Shared module layout & sidebar shell ── */
.module-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  align-items: start;
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
}

.main-content { min-width: 0; }

/* Mobile Controls Toggle Button */
.mobile-controls-btn {
  display: none;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 16px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  margin-bottom: 4px;
  box-shadow: var(--shadow-soft);
  transition: all 140ms ease;
  font-family: var(--font-sans);
}
.mobile-controls-btn:hover {
  border-color: rgba(12,23,45,0.18);
  box-shadow: var(--shadow);
}
.mobile-controls-btn .mcb-icon  { font-size: 16px; flex-shrink: 0; }
.mobile-controls-btn .mcb-label { flex: 1; text-align: left; }
.mobile-controls-btn .mcb-chevron {
  font-size: 11px; color: var(--muted);
  transition: transform 200ms ease;
}
.mobile-controls-btn[aria-expanded="true"] .mcb-chevron { transform: rotate(180deg); }

/* Sidebar shell */
.sidebar {
  position: sticky;
  top: 120px;
  padding: 16px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(12,23,45,0.15) transparent;
  width: 280px;
}
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(12,23,45,0.15); border-radius: 4px; }
.sidebar::-webkit-scrollbar-thumb:hover { background: rgba(12,23,45,0.28); }

/* Static top section (Data Mode — always visible) */
.sb-static {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}
.sb-static-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

/* Data Mode segmented toggle (fixed height — no layout shift) */
.sb-mode-row {
  display: flex;
  gap: 0;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-muted);
  flex-wrap: nowrap;
}
.sb-mode-btn {
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0 4px;
  background: transparent;
  border: none;
  border-right: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--font-sans);
}
.sb-mode-btn:last-child { border-right: none; }
.sb-mode-btn:hover { background: rgba(12,23,45,0.04); color: var(--text); }
.sb-mode-btn.active { background: var(--text); color: white; }

.sb-mode-hint {
  font-size: 10px;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.4;
}

/* Badge */
.data-badge {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(15,118,110,0.10);
  border: 1px solid rgba(15,118,110,0.20);
  color: var(--accent);
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}
.data-badge.random {
  background: #fef3c7;
  border-color: #fbbf24;
  color: #92400e;
}

/* Accordion groups */
.sb-acc-group { border-bottom: 1px solid var(--border); }
.sb-acc-group:last-child { border-bottom: none; }

.sb-acc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 0;
  cursor: pointer;
  user-select: none;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: color 120ms ease;
  font-family: var(--font-sans);
}
.sb-acc-header:hover { color: var(--text); }
.sb-acc-header.open  { color: var(--text); }

.sb-acc-chevron {
  font-size: 10px;
  color: var(--muted);
  transition: transform 200ms ease;
  flex-shrink: 0;
}
.sb-acc-header.open .sb-acc-chevron { transform: rotate(180deg); color: var(--text); }

.sb-acc-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  flex-shrink: 0;
  margin-left: auto;
}

.sb-acc-body { display: none; padding-bottom: 14px; }
.sb-acc-body.open { display: block; }

/* Buttons inside accordion */
.sb-acc-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: white;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 6px;
  transition: all 140ms ease;
  text-align: left;
  white-space: nowrap;
  font-family: var(--font-sans);
}
.sb-acc-btn:first-child { margin-top: 0; }
.sb-acc-btn:hover { border-color: rgba(12,23,45,0.18); box-shadow: 0 4px 12px rgba(11,18,32,0.06); }
.sb-acc-btn:active { transform: translateY(1px); }
.sb-acc-btn.primary { background: var(--text); color: white; border-color: var(--text); }
.sb-acc-btn.primary:hover { box-shadow: 0 6px 18px rgba(11,18,32,0.12); }
.sb-acc-btn.accent  { background: var(--accent); color: white; border-color: var(--accent); }

/* Scenario tabs */
.sb-acc-tabs { display: flex; flex-direction: column; gap: 6px; }
.sb-acc-tab {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: white;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: all 140ms ease;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
}
.sb-acc-tab:hover { border-color: rgba(12,23,45,0.18); box-shadow: 0 4px 12px rgba(11,18,32,0.06); }
.sb-acc-tab.active { background: var(--text); color: white; border-color: var(--text); }

/* Input rows */
.sb-acc-input-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}
.sb-acc-input-row:last-child { margin-bottom: 0; }
.sb-acc-input-row label {
  font-size: 11px;
  color: var(--muted);
  flex: 1;
  line-height: 1.3;
}
.sb-acc-input-row input[type="number"] {
  width: 76px;
  padding: 5px 7px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 12px;
  font-family: var(--font-sans);
  background: white;
  text-align: right;
  flex-shrink: 0;
  -moz-appearance: textfield;
}
.sb-acc-input-row input[type="number"]::-webkit-outer-spin-button,
.sb-acc-input-row input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.sb-acc-input-row input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(15,118,110,0.15);
}
.sb-acc-sub {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin: 10px 0 8px;
  border-top: 1px solid var(--border);
  padding-top: 9px;
}

/* Action buttons */
.sb-action-btn {
  display: flex; align-items: center; gap: 8px;
  width: 100%; padding: 7px 12px;
  border-radius: 999px; border: 1px solid var(--border);
  background: white; font-size: 12px; font-weight: 600;
  cursor: pointer; margin-top: 6px;
  transition: all 140ms ease; text-align: left;
  white-space: nowrap; font-family: var(--font-sans);
}
.sb-action-btn:hover { border-color: rgba(12,23,45,0.18); box-shadow: 0 4px 12px rgba(11,18,32,0.06); }
.sb-action-btn:active { transform: translateY(1px); }
.sb-action-btn.sb-action-primary { background: var(--text); color: white; border-color: var(--text); }
.sb-action-btn.sb-action-primary:hover { box-shadow: 0 6px 18px rgba(11,18,32,0.12); }
.sb-action-btn.sb-action-accent  { background: var(--accent); color: white; border-color: var(--accent); }
.sb-file-hidden { position: absolute; opacity: 0; width: 0; height: 0; }

/* Data needed strip */
.data-needed-section {
  padding: 0;
  border-bottom: 1px solid var(--border);
}
.data-needed-wrap {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px 32px 24px;
}
.data-needed-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.data-needed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(185px, 1fr));
  gap: 8px;
  align-items: stretch;
}
.data-needed-item {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  display: flex;
  align-items: flex-start;
  gap: 9px;
  background: #fafbfc;
  min-height: 88px;
  box-sizing: border-box;
}
.data-needed-icon {
  width: 26px; height: 26px; font-size: 13px;
  border-radius: 6px; display: flex; align-items: center;
  justify-content: center; flex-shrink: 0; margin-top: 1px;
}
.data-needed-name {
  font-size: 11px; font-weight: 700; color: var(--text);
  margin-bottom: 3px; line-height: 1.35;
}
.data-needed-desc { font-size: 10px; color: var(--muted); line-height: 1.5; }

/* Tooltip bubble (#tt-root defined above) */
.help-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(15,118,110,0.10);
  border: 1px solid rgba(15,118,110,0.20);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  cursor: help;
  flex-shrink: 0;
  position: static;
}
.help-icon::before { content: '?'; line-height: 1; }

/* Kill legacy CSS ::after tooltips — use JS body-level #tt-root instead */
.help-icon::after,
.help-icon:hover::after,
[data-tt]::after,
[data-tt]:hover::after,
[data-help]::after,
[data-help]:hover::after,
.term-helper::after,
.term-helper:hover::after {
  content: none !important;
  display: none !important;
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

/* Responsive module layout */
@media (max-width: 860px) {
  .module-layout {
    grid-template-columns: 1fr;
    padding: 16px;
  }
  .mobile-controls-btn { display: flex; }
  .sidebar {
    position: static;
    top: 0;
    width: 100%;
    max-height: none;
    overflow-y: visible;
    display: none;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
  }
  .sidebar.mobile-open { display: block; }
}
@media (max-width: 560px) {
  .module-layout { padding: 12px; }
  .module-title { font-size: 26px; }
  .module-hero { height: auto; min-height: 260px; }
}

/* ── Next module banner (inside module pages) ──── */
.next-module-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  padding: 24px 32px;
  background: var(--bg-muted);
  border-top: 1px solid var(--border);
  margin-top: 64px;
}
.next-module-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.next-module-title {
  font-size: 15px;
  font-weight: 650;
  color: var(--text);
}
.next-module-why {
  font-size: 13px;
  color: var(--muted);
  margin-top: 2px;
}
.next-module-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  flex-shrink: 0;
}



/* --- Section anchor alignment (consistent title position on nav jump) --- */
.section{
  padding-top: 56px;
  padding-bottom: 56px;
  scroll-margin-top: 92px; /* accounts for sticky header */
}
@media (max-width: 560px){
  .section{
    padding-top: 44px;
    padding-bottom: 44px;
    scroll-margin-top: 84px;
  }
}

/* ═══════════════════════════════════════════════════
   DEMO DATA PILL — shared across all module pages
   Add .demo-data-pill anywhere near the hero subtitle
   or module header to signal synthetic non-confidential data.
════════════════════════════════════════════════════ */
.demo-data-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  padding: 4px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(246,248,251,0.9);
  letter-spacing: 0.01em;
  white-space: nowrap;
  margin-top: 10px;
}
.demo-data-pill::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #94a3b8;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════
   PLAYBOOK / FRAMEWORK SECTION — shared polish
   Tightens the "Behind the Model" collapsible section
   for scan-readability in interviews.
════════════════════════════════════════════════════ */

/* Step header badges — consistent across both modules */
.fw-step-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent);
  margin-bottom: 12px;
}
.fw-step-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-size: 10px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Owner cards in field-ownership grid */
.fw-owner-card {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: white;
}

/* Alignment steps (A/B/C/D) */
.fw-align-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.fw-align-badge {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
  background: rgba(15,118,110,0.15);
  color: #0f766e;
}
.fw-align-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 3px;
}
.fw-align-body {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.55;
}

/* Intro paragraph tightening in framework */
.fw-intro {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 24px;
  max-width: 760px;
}

/* ═══════════════════════════════════════════════════
   UNIFIED BUTTON — .btn-outline
   Consistent ghost button for framework/download CTAs
════════════════════════════════════════════════════ */
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: white;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
  color: var(--text);
  transition: border-color 140ms ease, box-shadow 140ms ease;
  white-space: nowrap;
}
.btn-outline:hover {
  border-color: rgba(12,23,45,0.20);
  box-shadow: 0 4px 12px rgba(11,18,32,0.08);
}
.btn-outline:active { transform: translateY(1px); }

/* ═══════════════════════════════════════════════════
   HERO DEMO BAND — compact row below subtitle
   Holds the demo pill + any module-specific status
════════════════════════════════════════════════════ */
.module-hero-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}

/* ── Chip refinement: slightly tighter, unified weight ── */
.chip {
  font-size: 11px;
  padding: 5px 11px;
}