/* ValuFai — Institutional stylesheet */
:root {
  --navy: #0f1e2e;
  --navy-2: #14283c;
  --ink: #1a2530;
  --text: #2b3a4a;
  --muted: #5a6b7d;
  --line: #d9e0e7;
  --paper: #ffffff;
  --bg-soft: #f5f7f9;
  --accent: #0b5ea8;
  --accent-dark: #084a86;
  --accent-soft: #e8f1f9;
  --gold: #b48a3d;
  --danger: #8a2f2f;
  --success: #1e6b4f;
  --font: "Georgia", "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 4px;
  --shadow: 0 1px 3px rgba(15, 30, 46, 0.08), 0 4px 12px rgba(15, 30, 46, 0.06);
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16px;
}

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); }

/* Header */
.site-header {
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { color: #fff; font-family: var(--font); font-weight: 700; font-size: 1.25rem; letter-spacing: 0.02em; }
.brand:hover { color: #fff; }
.brand-mark { text-transform: uppercase; }
.main-nav { display: flex; align-items: center; gap: 24px; }
.main-nav a { color: #d7dfe8; font-size: 0.9rem; font-weight: 500; }
.main-nav a:hover { color: #fff; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }

/* Buttons */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--accent);
  cursor: pointer;
  transition: background 0.15s ease;
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-primary:focus-visible, .btn-secondary:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid rgba(11, 94, 168, 0.45);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--accent);
  padding: 10px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--accent);
  cursor: pointer;
}
.btn-secondary:hover { background: var(--accent-soft); }
.btn-lg { padding: 14px 28px; font-size: 1rem; }

/* Hero */
.hero { background: linear-gradient(180deg, var(--navy) 0%, var(--navy-2) 100%); color: #fff; padding: 96px 0 80px; }
.eyebrow { color: #a9c3da; text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; margin-bottom: 20px; font-weight: 600; }
.hero h1 { font-family: var(--font); font-size: 3rem; line-height: 1.15; font-weight: 700; margin-bottom: 20px; }
.hero h1 .accent { color: #cfe3f5; }
.hero-sub { color: #c6d4e2; font-size: 1.1rem; max-width: 720px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero .btn-secondary { color: #cfe3f5; border-color: rgba(207, 227, 245, 0.6); }
.hero .btn-secondary:hover { background: rgba(207, 227, 245, 0.1); }

/* Intake */
.intake-section { background: var(--bg-soft); padding: 64px 0; }
.intake-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  max-width: 820px;
  margin: 0 auto;
}
.intake-card h2, .intake-card h1 { font-family: var(--font); color: var(--ink); margin-bottom: 8px; }
.intake-card h1 { font-size: 2rem; }
.intake-hint { color: var(--muted); margin-bottom: 20px; font-size: 0.95rem; }
.intake-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  resize: vertical;
  margin-bottom: 16px;
}
.intake-form textarea:focus { border-color: var(--accent); }
.intake-row { display: flex; gap: 12px; align-items: center; }
.intake-row input {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 0.95rem;
}
.intake-note { margin-top: 16px; font-size: 0.82rem; color: var(--muted); }
.error-box { margin-top: 16px; padding: 12px 16px; background: #fdf0f0; border: 1px solid #e5b8b8; color: var(--danger); border-radius: var(--radius); font-size: 0.9rem; }

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-soft); }
.section h2 { font-family: var(--font); color: var(--ink); font-size: 2rem; margin-bottom: 16px; }
.lead { font-family: var(--font); font-size: 1.25rem; color: var(--ink); margin-bottom: 20px; }
.lead.secondary { margin-top: 24px; }
.muted { color: var(--muted); font-size: 0.9rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.two-col p { color: var(--text); }

/* Value grid */
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.value-item { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; background: var(--paper); }
.value-item h3 { font-size: 1rem; color: var(--ink); margin-bottom: 6px; }
.value-item p { font-size: 0.88rem; color: var(--muted); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.step { border-left: 3px solid var(--accent); padding: 0 0 0 20px; }
.step-num { font-family: var(--font); color: var(--accent); font-size: 0.9rem; font-weight: 700; }
.step h3 { font-size: 1.05rem; color: var(--ink); margin: 4px 0 6px; }
.step p { font-size: 0.9rem; color: var(--muted); }

/* Evidence states */
.evidence-states { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.evidence-state { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.evidence-state strong { color: var(--ink); display: block; margin-bottom: 4px; }
.evidence-state p { font-size: 0.82rem; color: var(--muted); }

/* Audience grid */
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.audience { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.audience h3 { font-size: 1rem; color: var(--ink); margin-bottom: 6px; }
.audience p { font-size: 0.88rem; color: var(--muted); }

/* Checklist */
.checklist { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 32px; }
.checklist li { position: relative; padding-left: 26px; color: var(--text); }
.checklist li::before { content: "—"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

/* Footer */
.site-footer { background: var(--navy); color: #c6d4e2; padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; margin-bottom: 32px; }
.site-footer strong { color: #fff; font-family: var(--font); font-size: 1.1rem; }
.site-footer p { font-size: 0.88rem; margin-top: 8px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: #a9c3da; font-size: 0.9rem; }
.footer-links a:hover { color: #fff; }
.copyright { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; font-size: 0.8rem; color: #8aa2b8; }
.site-footer .muted { color: #8aa2b8; }

/* Content pages */
.content-page { padding-top: 56px; padding-bottom: 72px; }
.subtitle { color: var(--muted); margin-bottom: 32px; }
.content-block { max-width: 760px; }
.content-block p { margin-bottom: 16px; }
.content-block h2 { font-family: var(--font); color: var(--ink); font-size: 1.4rem; margin: 32px 0 12px; }
.content-block h3 { font-family: var(--font); color: var(--ink); font-size: 1.05rem; margin: 24px 0 8px; }
.content-block ul, .content-block ol { margin: 0 0 16px 20px; }
.content-block li { margin-bottom: 8px; }
.content-block .legal-notice { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 24px; font-size: 0.95rem; }
.content-block .legal-notice strong { color: var(--ink); }
.content-block .muted { color: var(--muted); }
.content-block .updated { color: var(--muted); font-size: 0.85rem; margin-top: 32px; }
.content-block .cta { margin: 32px 0 8px; }
.content-block .cta .btn-primary { display: inline-block; }
.link-arrow { font-weight: 600; }
.content-block a.btn-primary { color: #fff; }

/* Results / app page */
.app-shell { max-width: 1080px; margin: 0 auto; padding: 40px 24px; }
.results-hero { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; margin-bottom: 32px; }
.results-hero h2 { font-family: var(--font); color: var(--ink); }
.results-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.range-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.range-card h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 8px; }
.range-value { font-family: var(--font); font-size: 1.75rem; color: var(--ink); font-weight: 700; }
.range-detail { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }
.confidence-bar { height: 8px; background: var(--line); border-radius: 4px; margin: 12px 0; overflow: hidden; }
.confidence-fill { height: 100%; background: var(--accent); }
.stat-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
.stat-label { color: var(--muted); }
.stat-value { font-weight: 600; color: var(--ink); }

@media (max-width: 900px) {
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .steps, .audience-grid { grid-template-columns: 1fr 1fr; }
  .evidence-states { grid-template-columns: repeat(2, 1fr); }
  .results-grid { grid-template-columns: 1fr; }
  .main-nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--navy); flex-direction: column; padding: 16px 24px; align-items: flex-start; }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .hero h1 { font-size: 2.2rem; }
}

@media (max-width: 560px) {
  .two-col, .value-grid, .steps, .audience-grid, .evidence-states, .checklist { grid-template-columns: 1fr; }
  .hero { padding: 56px 0; }
  .intake-row { flex-direction: column; align-items: stretch; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}