/* PoliSphere Advisory — shared stylesheet */

/* 3Bi wordmark — bold italic serif */
.threebi { font-family: Georgia, 'Times New Roman', serif; font-weight: 700; font-style: italic; }

:root {
  --navy: #1e2761;        /* Polisphere deep indigo (from brand deck) */
  --navy-deep: #161c47;
  --slate: #2b3670;
  --gold: #ea4e36;        /* coral accent (from logo dot) */
  --gold-soft: #f26a54;
  --ink: #14161c;         /* near-black wordmark ink */
  --muted: #5b6472;
  --line: #e4e7ec;
  --bg: #ffffff;
  --bg-alt: #f6f7f9;
  --bg-navy-tint: #f1f3f9;
  --max: 1140px;
  --radius: 10px;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.15; color: var(--navy); letter-spacing: -0.02em; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.2rem; }
p { color: var(--muted); }

.eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--gold);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  display: block;
  width: 32px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
  margin-bottom: 14px;
}
.section-head.center .eyebrow::before { margin-left: auto; margin-right: auto; }

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 6px;
  transition: all .2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-gold { background: var(--gold); color: var(--navy-deep); }
.btn-gold:hover { background: var(--gold-soft); transform: translateY(-1px); }
.btn-outline { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--slate); transform: translateY(-1px); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: baseline; font-family: var(--sans); font-size: 1.4rem; font-weight: 400; color: var(--ink); letter-spacing: -0.02em; }
.brand strong { font-weight: 800; }
.brand .dot { color: var(--gold); font-weight: 800; }
.brand-lockup { display:inline; }
.site-footer .brand, .site-footer .brand strong { color:#fff; }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a { font-size: 0.93rem; font-weight: 500; color: var(--ink); transition: color .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-cta { padding: 10px 20px; font-size: 0.88rem; }
.menu-toggle { display: none; background: none; border: 0; font-size: 1.5rem; color: var(--navy); cursor: pointer; }

/* Interactive particle-network background */
.bg-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.page-hero { position: relative; overflow: hidden; }
.page-hero .wrap { position: relative; z-index: 1; }

/* Hero */
.hero {
  background-color: var(--slate);
  background-image: linear-gradient(160deg, rgba(22,28,71,.72) 0%, rgba(43,54,112,.52) 100%), url('hero.jpg');
  background-size: cover; background-position: center;
  color: #fff; position: relative; overflow: hidden;
}
.hero::after {
  content:""; position:absolute; inset:0;
  background: radial-gradient(circle at 78% 20%, rgba(200,162,76,.18), transparent 45%);
  pointer-events:none;
}
.hero-inner { padding: 96px 0 104px; position: relative; z-index: 1; max-width: 760px; }
.hero h1 { color: #fff; }
.hero p.lead { color: rgba(255,255,255,.82); font-size: 1.18rem; margin: 22px 0 34px; max-width: 620px; }
.hero .eyebrow { color: var(--gold-soft); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Sections */
section {
  padding: 84px 0;
  background-color: #f5f6fb;
}
.section-head { max-width: 680px; margin-bottom: 52px; }
.section-head.center { margin-left:auto; margin-right:auto; text-align:center; }
.section-head p { margin-top: 14px; font-size: 1.05rem; }
.alt { background: #ffffff; }
.navy-band { background: var(--navy); color:#fff; }
.navy-band h2, .navy-band h3 { color:#fff; }
.navy-band p { color: rgba(255,255,255,.78); }

/* Grid cards */
.grid { display: grid; gap: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 14px 30px rgba(14,28,51,.08); border-color: #d7dbe2; }
.card .num { font-family: var(--serif); font-size: 1.1rem; color: var(--gold); font-weight:600; }
.card h3 { margin: 14px 0 10px; }
.card p { font-size: 0.96rem; }
.icon-badge {
  width: 46px; height: 46px; border-radius: 9px;
  background: var(--bg-navy-tint); color: var(--slate);
  display:flex; align-items:center; justify-content:center; margin-bottom: 18px;
}
.icon-badge svg { width: 24px; height: 24px; }

/* Stats */
.stats { display:grid; grid-template-columns: repeat(4,1fr); gap: 24px; text-align:center; }
.stat .n { font-family: var(--serif); font-size: 2.6rem; color: var(--gold); font-weight:600; }
.stat .l { font-size: .9rem; color: rgba(255,255,255,.72); margin-top:4px; letter-spacing:.02em; }

/* Split / feature rows */
.split { display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:center; }
.split ul { list-style:none; margin-top: 20px; }
.split ul li { position:relative; padding-left: 28px; margin-bottom: 12px; color: var(--muted); }
.split ul li::before { content:""; position:absolute; left:0; top:9px; width:14px; height:2px; background:var(--gold); }
.panel { background: var(--bg-navy-tint); border-radius: var(--radius); padding: 40px; border:1px solid var(--line); }
.panel .quote { font-family: var(--serif); font-size: 1.3rem; color: var(--navy); line-height:1.5; }
.panel .quote span { color: var(--gold); }

/* Audience list */
.aud { display:grid; grid-template-columns: repeat(3,1fr); gap: 26px; }
.aud .item { padding: 28px; border-radius: var(--radius); background:#fff; border:1px solid var(--line); }
.aud .item h3 { margin-bottom:8px; }

/* CTA band */
.cta-band { background: linear-gradient(160deg, var(--navy-deep), var(--slate)); color:#fff; text-align:center; }
.cta-band h2 { color:#fff; }
.cta-band p { color: rgba(255,255,255,.8); max-width:560px; margin: 16px auto 30px; }

/* Contact */
.contact-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:start; }
.field { margin-bottom: 18px; }
.field label { display:block; font-size:.85rem; font-weight:600; color:var(--ink); margin-bottom:6px; }
.field input, .field textarea, .field select {
  width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:6px;
  font-family:var(--sans); font-size:.95rem; color:var(--ink); background:#fff;
}
.field input:focus, .field textarea:focus, .field select:focus { outline:none; border-color:var(--gold); box-shadow:0 0 0 3px rgba(200,162,76,.15); }
.contact-info .row { display:flex; gap:14px; padding:18px 0; border-bottom:1px solid var(--line); }
.contact-info .row:last-child { border-bottom:0; }
.contact-info .k { font-size:.78rem; text-transform:uppercase; letter-spacing:.12em; color:var(--muted); font-weight:600; }
.contact-info .v { font-size:1.05rem; color:var(--navy); font-weight:500; }

/* Tag chips (client types, focus areas) */
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag { padding: 9px 18px; background: var(--bg-navy-tint); border: 1px solid var(--line); border-radius: 999px; font-size: 0.9rem; color: var(--navy); font-weight: 500; }
.lead-copy { font-size: 1.18rem; line-height: 1.7; color: var(--ink); max-width: 760px; }
.lead-copy + .lead-copy { margin-top: 18px; }

/* Page hero (inner pages) */
.page-hero { background-color: var(--slate); background-image: linear-gradient(160deg, rgba(22,28,71,.72), rgba(43,54,112,.55)), url('hero-3bi.jpg'); background-size: cover; background-position: center; color:#fff; padding: 72px 0; }
.page-hero h1 { color:#fff; }
.page-hero p { color: rgba(255,255,255,.8); max-width: 620px; margin-top:14px; font-size:1.1rem; }
.breadcrumb { font-size:.82rem; color: var(--gold-soft); letter-spacing:.04em; margin-bottom:16px; }

/* Footer */
.site-footer { background: var(--navy-deep); color: rgba(255,255,255,.72); padding: 64px 0 28px; }
.footer-top { display:grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom:40px; border-bottom:1px solid rgba(255,255,255,.1); }
.site-footer .brand { color:#fff; margin-bottom:14px; }
.site-footer p { color: rgba(255,255,255,.6); font-size:.92rem; max-width:320px; }
.footer-col h4 { font-family:var(--sans); font-size:.78rem; text-transform:uppercase; letter-spacing:.14em; color:var(--gold); margin-bottom:16px; }
.footer-col a { display:block; color:rgba(255,255,255,.7); font-size:.93rem; margin-bottom:10px; transition:color .2s; }
.footer-col a:hover { color:#fff; }
.footer-bottom { padding-top:24px; display:flex; justify-content:space-between; font-size:.82rem; color:rgba(255,255,255,.5); flex-wrap:wrap; gap:8px; }

/* Responsive */
@media (max-width: 900px) {
  .grid-3, .grid-4, .aud, .stats { grid-template-columns: 1fr 1fr; }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display:none; }
  .nav-links.open { display:flex; position:absolute; top:72px; left:0; right:0; flex-direction:column; background:#fff; padding:20px 24px; border-bottom:1px solid var(--line); gap:18px; }
  .menu-toggle { display:block; }
  .grid-3, .grid-4, .grid-2, .aud, .stats { grid-template-columns: 1fr; }
  section { padding: 60px 0; }
  .hero-inner { padding: 68px 0 76px; }
  .footer-top { grid-template-columns: 1fr; }
}