/* ═══════════════════════════════════════════════════════════════
   Knowledge Navigators — Shared Stylesheet (subpages)
   Extracted from homepage design system.
   ═══════════════════════════════════════════════════════════════ */

:root {
    --bg: #030303;
    --surface: #0e0e0e;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent: #E2FF54;
    --accent-glow: rgba(226,255,84,0.15);
    --border: rgba(255,255,255,0.12);
    --font-sans: "Inter", -apple-system, sans-serif;
    --font-mono: "Space Mono", monospace;
    --ease-out: cubic-bezier(0.16,1,0.3,1);
    --ease-smooth: cubic-bezier(0.25,1,0.5,1);
    --padding-x: 4vw;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { background:var(--bg); color:var(--text-primary); font-family:var(--font-sans); line-height:1.5; -webkit-font-smoothing:antialiased; overflow-x:hidden; }
::selection { background:var(--accent); color:#000; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.noise-overlay { position:fixed; inset:0; pointer-events:none; z-index:9000; opacity:0.03; background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }

h1,h2,h3,h4 { font-weight:400; letter-spacing:-0.04em; line-height:1.1; }
.text-accent { color:var(--accent); }
.label { font-family:var(--font-mono); font-size:0.75rem; text-transform:uppercase; letter-spacing:0.1em; color:var(--text-secondary); margin-bottom:1rem; display:block; }
.container { width:100%; max-width:1800px; margin:0 auto; padding:0 var(--padding-x); position:relative; z-index:2; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── HEADER ──────────────────────────────────────────────────── */
.site-header { position:fixed; top:0; left:0; right:0; z-index:1000; padding:1.5rem var(--padding-x); display:flex; justify-content:space-between; align-items:center; transition:background .4s,backdrop-filter .4s,border-color .4s; border-bottom:1px solid transparent; background:rgba(3,3,3,0.6); backdrop-filter:blur(10px); }
.site-header.scrolled { background:rgba(3,3,3,0.88); border-bottom-color:var(--border); }
.site-logo { font-family:var(--font-mono); font-size:.8rem; text-transform:uppercase; letter-spacing:.08em; color:var(--text-primary); text-decoration:none; font-weight:700; }
.site-logo:hover { text-decoration:none; color:var(--accent); }
.site-nav { display:flex; gap:2.5rem; align-items:center; }
.site-nav a { font-family:var(--font-sans); font-size:.85rem; color:var(--text-secondary); text-decoration:none; transition:color .3s; }
.site-nav a:hover { color:var(--text-primary); }
.site-nav a[aria-current="page"] { color:var(--accent); }
.site-nav .btn-nav { background:var(--text-primary); color:var(--bg); padding:.55rem 1.2rem; border-radius:100px; }
.site-nav .btn-nav:hover { background:var(--accent); color:var(--bg); }
.nav-toggle { display:none; background:none; border:none; color:var(--text-primary); cursor:pointer; padding:.5rem; }

/* ─── BUTTONS ─────────────────────────────────────────────────── */
.btn { background:var(--text-primary); color:var(--bg); padding:.8rem 1.8rem; border-radius:100px; text-decoration:none; font-weight:500; font-size:.9rem; transition:all .4s var(--ease-smooth); display:inline-flex; align-items:center; gap:.5rem; white-space:nowrap; border:none; cursor:pointer; }
.btn:hover { background:var(--accent); transform:translateY(-2px); box-shadow:0 10px 20px -5px var(--accent-glow); text-decoration:none; color:var(--bg); }
.btn-ghost { background:transparent; color:var(--text-primary); border:1px solid var(--border); }
.btn-ghost:hover { background:transparent; border-color:var(--accent); color:var(--accent); box-shadow:none; }

/* ─── PAGE HERO (subpage) ─────────────────────────────────────── */
.page-hero { padding:12rem var(--padding-x) 6rem; position:relative; border-bottom:1px solid var(--border); overflow:hidden; }
.page-hero-orb { position:absolute; top:-20%; right:-10%; width:50vw; height:50vw; background:radial-gradient(circle,var(--accent) 0%,transparent 60%); opacity:.05; filter:blur(80px); z-index:0; pointer-events:none; }
.breadcrumbs { font-family:var(--font-mono); font-size:.68rem; text-transform:uppercase; letter-spacing:.1em; color:var(--text-secondary); margin-bottom:2rem; display:flex; gap:.5rem; flex-wrap:wrap; }
.breadcrumbs a { color:var(--text-secondary); text-decoration:none; transition:color .3s; }
.breadcrumbs a:hover { color:var(--accent); }
.breadcrumbs .sep { color:var(--border); }
.breadcrumbs [aria-current] { color:var(--accent); }
.page-hero h1 { font-size:clamp(2.5rem,7vw,6.5rem); text-transform:uppercase; letter-spacing:-0.04em; line-height:.9; max-width:1400px; font-weight:300; margin-bottom:2rem; }
.page-hero .lede { font-size:clamp(1.1rem,1.6vw,1.4rem); color:var(--text-secondary); max-width:780px; font-weight:300; line-height:1.5; }
.page-hero .hero-ctas { margin-top:3rem; display:flex; gap:1rem; flex-wrap:wrap; }

/* ─── SECTIONS ────────────────────────────────────────────────── */
.section { padding:8vw 0; border-bottom:1px solid var(--border); }
.section-header { margin-bottom:4rem; max-width:900px; }
.section h2 { font-size:clamp(2rem,4.5vw,4rem); letter-spacing:-0.03em; margin-bottom:1.25rem; }
.section-lede { color:var(--text-secondary); font-size:1.1rem; max-width:720px; line-height:1.6; }
.section p { color:var(--text-secondary); font-size:1rem; line-height:1.7; max-width:720px; margin-bottom:1.25rem; }
.section p strong { color:var(--text-primary); font-weight:500; }

/* ─── TWO COL LAYOUT ──────────────────────────────────────────── */
.two-col { display:grid; grid-template-columns:1fr 1.3fr; gap:5vw; align-items:start; }
.two-col .col-label { font-family:var(--font-mono); font-size:.7rem; text-transform:uppercase; letter-spacing:.1em; color:var(--text-secondary); }

/* ─── FEATURE GRID ────────────────────────────────────────────── */
.feature-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1.5rem; margin-top:3rem; }
.feature-card { padding:2.5rem 2rem; border:1px solid var(--border); background:rgba(255,255,255,0.015); transition:border-color .4s, background .4s, transform .4s var(--ease-out); }
.feature-card:hover { border-color:rgba(226,255,84,0.4); background:rgba(226,255,84,0.02); transform:translateY(-3px); }
.feature-num { font-family:var(--font-mono); font-size:.7rem; color:var(--accent); letter-spacing:.1em; margin-bottom:1rem; display:block; }
.feature-card h3 { font-size:1.35rem; margin-bottom:.9rem; }
.feature-card p { color:var(--text-secondary); font-size:.95rem; line-height:1.55; margin:0; }

/* ─── PROCESS LIST ─────────────────────────────────────────────── */
.process-list { display:flex; flex-direction:column; }
.process-item { display:grid; grid-template-columns:auto 1fr; gap:4vw; padding:3vw 0; border-bottom:1px solid var(--border); align-items:start; }
.process-item:last-child { border-bottom:none; }
.process-num { font-size:clamp(3rem,7vw,5rem); font-weight:300; line-height:.8; color:transparent; -webkit-text-stroke:1px var(--text-secondary); transition:color .4s,-webkit-text-stroke-color .4s; }
.process-item:hover .process-num { color:var(--accent); -webkit-text-stroke-color:transparent; }
.process-content h3 { font-size:clamp(1.4rem,2.5vw,2rem); margin-bottom:.75rem; }
.process-content p { color:var(--text-secondary); font-size:1rem; line-height:1.6; max-width:700px; }

/* ─── DELIVERABLES LIST ───────────────────────────────────────── */
.deliverables { list-style:none; display:grid; grid-template-columns:repeat(2,1fr); gap:1rem; margin-top:2rem; }
.deliverables li { border:1px solid var(--border); padding:1.25rem 1.5rem; display:flex; align-items:flex-start; gap:.9rem; transition:border-color .3s, background .3s; }
.deliverables li:hover { border-color:rgba(226,255,84,0.35); background:rgba(226,255,84,0.02); }
.deliverables li::before { content:'→'; color:var(--accent); flex-shrink:0; font-family:var(--font-mono); font-weight:700; }
.deliverables li span { font-size:.95rem; color:var(--text-primary); }

/* ─── FAQ ─────────────────────────────────────────────────────── */
.faq-list { max-width:1000px; }
.faq-item { border-bottom:1px solid var(--border); }
.faq-item:first-child { border-top:1px solid var(--border); }
.faq-q { width:100%; background:none; border:none; color:var(--text-primary); font-family:var(--font-sans); font-size:clamp(1.1rem,1.6vw,1.4rem); font-weight:400; text-align:left; padding:1.75rem 0; cursor:pointer; display:flex; justify-content:space-between; align-items:center; gap:2rem; letter-spacing:-0.02em; transition:color .3s; }
.faq-q:hover { color:var(--accent); }
.faq-icon { flex-shrink:0; font-family:var(--font-mono); color:var(--accent); transition:transform .4s var(--ease-out); font-size:1.2rem; }
.faq-item.open .faq-icon { transform:rotate(45deg); }
.faq-a { max-height:0; overflow:hidden; transition:max-height .5s var(--ease-smooth), padding .4s; color:var(--text-secondary); font-size:1rem; line-height:1.65; max-width:850px; }
.faq-item.open .faq-a { max-height:600px; padding:0 0 1.75rem 0; }

/* ─── RELATED LINKS ───────────────────────────────────────────── */
.related-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1.25rem; margin-top:2rem; }
.related-card { padding:2rem; border:1px solid var(--border); display:block; text-decoration:none; color:inherit; transition:border-color .4s, background .4s, transform .4s var(--ease-out); }
.related-card:hover { border-color:rgba(226,255,84,0.5); background:rgba(226,255,84,0.03); transform:translateY(-3px); text-decoration:none; color:inherit; }
.related-card .label { margin-bottom:.75rem; }
.related-card h4 { font-size:1.2rem; margin-bottom:.5rem; color:var(--text-primary); }
.related-card p { font-size:.88rem; color:var(--text-secondary); }
.related-card .arrow { color:var(--accent); display:inline-block; margin-top:1rem; font-size:.85rem; }

/* ─── CTA BAND ─────────────────────────────────────────────────── */
.cta-band { padding:10vw 0; text-align:center; border-bottom:1px solid var(--border); position:relative; overflow:hidden; }
.cta-band::before { content:''; position:absolute; top:50%; left:50%; width:80vw; height:80vw; background:radial-gradient(circle,var(--accent) 0%,transparent 50%); transform:translate(-50%,-50%); opacity:.04; filter:blur(80px); pointer-events:none; }
.cta-band h2 { font-size:clamp(2rem,5vw,4.5rem); max-width:1000px; margin:0 auto 1.5rem; line-height:1.05; position:relative; }
.cta-band p { color:var(--text-secondary); max-width:600px; margin:0 auto 2.5rem; font-size:1.05rem; position:relative; }
.cta-band .btn-group { display:flex; gap:1rem; justify-content:center; flex-wrap:wrap; position:relative; }

/* ─── FOOTER ───────────────────────────────────────────────────── */
footer { padding:6vw 0 2vw; border-top:1px solid var(--border); }
.footer-content { display:grid; grid-template-columns:1.2fr 1fr 1fr 1fr; gap:4vw; align-items:start; margin-bottom:6vw; }
.footer-title { font-size:clamp(2rem,4vw,3rem); font-weight:400; line-height:1; color:var(--text-primary); margin-bottom:1.5rem; }
.footer-col-label { font-family:var(--font-mono); font-size:.7rem; text-transform:uppercase; letter-spacing:.1em; color:var(--text-secondary); margin-bottom:1.5rem; display:block; }
.footer-links { display:flex; flex-direction:column; gap:.75rem; }
.footer-links a { color:var(--text-secondary); text-decoration:none; font-size:.95rem; transition:color .3s,transform .3s var(--ease-out); display:inline-block; }
.footer-links a:hover { color:var(--accent); transform:translateX(4px); text-decoration:none; }
.footer-bottom { display:flex; justify-content:space-between; align-items:center; color:var(--text-secondary); font-family:var(--font-mono); font-size:.7rem; text-transform:uppercase; border-top:1px solid var(--border); padding-top:2rem; }
.footer-status { display:flex; align-items:center; gap:.5rem; }
.footer-status-dot { width:6px; height:6px; border-radius:50%; background:var(--accent); animation:pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:.3;} }

/* ─── FADE UP ─────────────────────────────────────────────────── */
.fade-up { opacity:0; transform:translateY(30px); transition:opacity .9s var(--ease-smooth), transform .9s var(--ease-smooth); }
.fade-up.visible { opacity:1; transform:translateY(0); }
.delay-1 { transition-delay:.08s; } .delay-2 { transition-delay:.16s; } .delay-3 { transition-delay:.24s; }

/* ─── MOBILE ──────────────────────────────────────────────────── */
@media(max-width:900px){
    .site-nav { display:none; position:fixed; top:0; left:0; right:0; bottom:0; background:rgba(3,3,3,0.98); backdrop-filter:blur(20px); flex-direction:column; justify-content:center; gap:2rem; padding:2rem; }
    .site-nav.open { display:flex; }
    .site-nav a { font-size:1.5rem; color:var(--text-primary); }
    .nav-toggle { display:block; z-index:1001; }
    .two-col { grid-template-columns:1fr; gap:2rem; }
    .feature-grid, .related-grid { grid-template-columns:1fr; }
    .footer-content { grid-template-columns:1fr 1fr; gap:2.5rem; }
}
@media(max-width:768px){
    :root { --padding-x:5vw; }
    .page-hero { padding-top:8rem; padding-bottom:4rem; }
    .deliverables { grid-template-columns:1fr; }
    .process-item { grid-template-columns:1fr; gap:1rem; }
    .footer-content { grid-template-columns:1fr; gap:2.5rem; }
    .footer-bottom { flex-direction:column; gap:.75rem; align-items:flex-start; }
    .btn { padding:.7rem 1.4rem; font-size:.85rem; }
    .faq-q { font-size:1.05rem; padding:1.25rem 0; }
}
@media(prefers-reduced-motion:reduce){
    *,*::before,*::after { animation-duration:.01ms!important; transition-duration:.01ms!important; }
}