/* ValueSight — shared stylesheet
   Tranche 1. Tokens preserved from the original site (--blue, --blue-accent). */

:root {
  /* Brand */
  --navy: #0A2540;
  --navy-deep: #06192C;
  --accent: #2F80ED;
  --accent-soft: #6FA8F5;

  /* Neutrals */
  --text: #111111;
  --text-secondary: #5A6472;
  --text-on-dark: #E8EDF4;
  --text-on-dark-muted: #9BAABE;
  --border: #E6EAF0;
  --border-on-dark: rgba(255, 255, 255, 0.16);
  --bg: #FFFFFF;
  --soft: #F6F8FB;

  /* Layout */
  --max-width: 1140px;
  --narrow-width: 760px;
  --gutter: 24px;
  --section-y: 96px;
  --section-y-mobile: 64px;
  --radius: 10px;
  --radius-lg: 16px;

  /* Type */
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Layout ---------- */

.container {
  width: min(var(--max-width), calc(100% - (var(--gutter) * 2)));
  margin: 0 auto;
}

.narrow {
  width: min(var(--narrow-width), calc(100% - (var(--gutter) * 2)));
  margin: 0 auto;
}

.section {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
}

.section-dark {
  background: var(--navy);
  color: var(--text-on-dark);
}

.section-soft { background: var(--soft); }

section[id] { scroll-margin-top: 92px; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy);
  color: #fff;
  padding: 12px 18px;
  z-index: 100;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* ---------- Type ---------- */

h1, h2, h3 {
  line-height: 1.15;
  letter-spacing: -0.025em;
  font-weight: 700;
  text-wrap: balance;
}

h1 { font-size: clamp(34px, 6vw, 58px); }
h2 { font-size: clamp(27px, 4.2vw, 40px); }
h3 { font-size: clamp(19px, 2.4vw, 22px); }

p { max-width: 68ch; }

.lead {
  font-size: clamp(17px, 2.1vw, 20px);
  color: var(--text-secondary);
  margin-top: 20px;
}

.section-dark .lead,
.section-dark p { color: var(--text-on-dark-muted); }

.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.section-dark .eyebrow { color: var(--accent-soft); }

.small { font-size: 14px; color: var(--text-secondary); }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.wordmark .v { color: var(--navy); }
.wordmark .s { color: var(--accent); }

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-desktop a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-desktop a:hover { color: var(--text); }

/* Mobile nav: no JavaScript, uses <details> */
.nav-mobile { display: none; position: relative; }

.nav-mobile summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
}

.nav-mobile summary::-webkit-details-marker { display: none; }

.nav-mobile[open] summary { border-color: var(--navy); }

.nav-mobile-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  width: min(78vw, 280px);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 16px 40px rgba(10, 37, 64, 0.14);
  padding: 8px;
  display: grid;
}

.nav-mobile-panel a {
  padding: 13px 14px;
  min-height: 44px;
  display: flex;
  align-items: center;
  font-weight: 500;
  border-radius: 8px;
}

.nav-mobile-panel a:hover { background: var(--soft); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 13px 24px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: #1F6FDC; }

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover { border-color: var(--navy); }

.section-dark .btn-secondary {
  color: var(--text-on-dark);
  border-color: var(--border-on-dark);
}

.section-dark .btn-secondary:hover { border-color: var(--text-on-dark); }

.btn-header { min-height: 42px; padding: 9px 18px; font-size: 15px; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

/* ---------- Cards / grids ---------- */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  background: #fff;
}

.card h3 { margin-bottom: 12px; }
.card p { color: var(--text-secondary); font-size: 16px; }

.card-number {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 14px;
}

/* ---------- Product visual (replaceable) ----------
   Swap the <figure class="product-visual"> contents for the final
   dashboard image when the UI redesign is signed off. Nothing else
   needs to change. */

.product-visual {
  margin-top: 44px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.product-visual img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.product-visual figcaption {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-secondary);
}

.section-dark .product-visual figcaption { color: var(--text-on-dark-muted); }

/* Evidence diagram */
.evidence {
  margin-top: 40px;
  display: grid;
  gap: 18px;
}

.evidence-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.chip-current {
  background: var(--accent);
  color: #fff;
}

.chip-emerging {
  background: transparent;
  color: var(--text-on-dark-muted);
  border: 1px dashed var(--border-on-dark);
}

.evidence-light .chip-emerging {
  color: var(--text-secondary);
  border-color: #C9D2DE;
}

.evidence-key {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  color: var(--text-on-dark-muted);
}

.evidence-light .evidence-key { color: var(--text-secondary); }

.evidence-key span { display: inline-flex; align-items: center; gap: 8px; }

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.dot-outline {
  background: transparent;
  border: 1px dashed currentColor;
}

.evidence-arrow {
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  padding-left: 22px;
}

.evidence-out {
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
}

.evidence-light .evidence-out { border-color: var(--border); }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  background: #fff;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-legal { font-size: 13px; color: var(--text-secondary); }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-links a:hover { color: var(--text); }

/* ---------- Prose (privacy) ---------- */

.prose h2 {
  font-size: clamp(22px, 3vw, 27px);
  margin-top: 48px;
  margin-bottom: 14px;
}

.prose h3 {
  font-size: 18px;
  margin-top: 28px;
  margin-bottom: 8px;
}

.prose p { margin-bottom: 14px; }

.prose ul {
  list-style: disc;
  padding-left: 22px;
  margin-bottom: 16px;
}

.prose li { margin-bottom: 8px; }

.prose a { color: var(--accent); text-decoration: underline; }

.meta-box {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--soft);
  border-radius: var(--radius);
  font-size: 15px;
  display: grid;
  gap: 6px;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 760px) {
  :root { --gutter: 18px; }

  body { font-size: 16px; }

  .section {
    padding-top: var(--section-y-mobile);
    padding-bottom: var(--section-y-mobile);
  }

  .nav-desktop { display: none; }
  .nav-mobile { display: block; }

  .btn-row { gap: 12px; }
  .btn-row .btn { width: 100%; }

  .card { padding: 22px; }
}

/* ============================================================
   Tranche 2 additions
   ============================================================ */

/* Screenshot placeholder. Deliberately not fake UI — it reads as
   an empty slot so it can never be mistaken for the product. */
.shot-placeholder {
  border: 2px dashed #C9D2DE;
  border-radius: var(--radius-lg);
  background: var(--soft);
  aspect-ratio: 16 / 9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  padding: 24px;
}

.section-dark .shot-placeholder {
  border-color: var(--border-on-dark);
  background: rgba(255, 255, 255, 0.03);
}

.shot-placeholder strong { font-size: 16px; font-weight: 600; }
.shot-placeholder span { font-size: 14px; color: var(--text-secondary); }
.section-dark .shot-placeholder span { color: var(--text-on-dark-muted); }

/* Hero split */
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}

/* Editorial two-column block */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.split-text h2 { margin-bottom: 18px; }

/* Question stack (problem section) */
.questions {
  display: grid;
  gap: 2px;
  margin-top: 40px;
  border-top: 1px solid var(--border);
}

.questions li {
  border-bottom: 1px solid var(--border);
  padding: 22px 0;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.questions li span { color: var(--accent); margin-right: 14px; font-weight: 700; }

/* Numbered outcome blocks */
.outcome {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 32px;
  padding: 44px 0;
  border-top: 1px solid var(--border);
}

.outcome-index {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  padding-top: 8px;
}

.outcome h3 {
  font-size: clamp(23px, 3.2vw, 30px);
  margin-bottom: 14px;
}

.outcome p { color: var(--text-secondary); }
.outcome p + p { margin-top: 12px; }

.status-note {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  border: 1px dashed #C9D2DE;
  border-radius: 999px;
  padding: 6px 14px;
}

/* Timeline */
.timeline {
  list-style: none;
  margin-top: 48px;
  display: grid;
  gap: 0;
  border-left: 2px solid var(--border-on-dark);
  padding-left: 28px;
}

.timeline-item { padding: 16px 0; position: relative; }

.timeline-item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid var(--accent-soft);
}

.timeline-item.is-cvr::before { background: var(--accent); border-color: var(--accent); }

.timeline-date {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-soft);
}

.timeline-item p { font-size: 18px; color: var(--text-on-dark); margin-top: 4px; }

.timeline-note { margin-top: 24px; font-size: 13px; color: var(--text-on-dark-muted); }

/* Principles */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 48px;
}

.principle {
  padding: 0 32px;
  border-left: 1px solid var(--border-on-dark);
}

.principle:first-child { padding-left: 0; border-left: 0; }

.principle h3 { font-size: 20px; margin-bottom: 12px; }

/* Trust chain */
.chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 40px;
}

.chain-step {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 10px 16px;
  border: 1px solid var(--border-on-dark);
  border-radius: 999px;
  color: var(--text-on-dark);
}

.chain-sep { color: var(--accent-soft); font-weight: 700; }

/* Systems grid */
.systems {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.system-tile {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 22px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: #fff;
}

/* Founder */
.founder {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 44px;
  align-items: start;
  margin-top: 40px;
}

.founder-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background: var(--soft);
}

.founder blockquote p { font-size: clamp(18px, 2.4vw, 21px); margin-bottom: 16px; }
.founder cite { font-style: normal; font-size: 15px; color: var(--text-secondary); }
.founder cite strong { display: block; color: var(--text); font-weight: 600; }

@media (max-width: 900px) {
  .hero-grid, .split, .founder { grid-template-columns: 1fr; gap: 36px; }
  .principles { grid-template-columns: 1fr; gap: 28px; }
  .principle { padding: 0 0 0 20px; border-left: 1px solid var(--border-on-dark); }
  .principle:first-child { padding-left: 20px; border-left: 1px solid var(--border-on-dark); }
  .outcome { grid-template-columns: 1fr; gap: 12px; padding: 32px 0; }
  .founder-photo { width: 180px; }
}