/* ============================================================
   knowledgesidekick.com — shared stylesheet
   One system, five theme personalities.
   Light theme. Body ~15px. h2 ~23px. Code ~12.5px.
   ============================================================ */

:root{
  --bg:#fbfaf7;
  --panel:#ffffff;
  --panel-2:#f6f3ec;
  --ink:#1c1a17;
  --ink-soft:#5b574f;
  --muted:#8a857c;
  --line:#e6e0d4;
  --line-2:#dcd5c6;
  --accent:#2563eb;
  --accent-soft:#eaf1fb;
  --accent-ink:#1a4fbd;
  --amber:#b45309;
  --amber-soft:#fbf3e3;
  --teal:#0f766e;
  --teal-soft:#e6f2f1;
  --purple:#6d28d9;
  --purple-soft:#f0eafc;
  --emerald:#047857;
  --emerald-soft:#e7f6ef;
  --shadow:0 1px 2px rgba(20,18,15,.04), 0 4px 16px rgba(20,18,15,.04);
  --shadow-lg:0 4px 12px rgba(20,18,15,.06), 0 14px 40px rgba(20,18,15,.08);
  --maxw:1180px;
  --radius:10px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:var(--accent-ink);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;color:var(--ink);font-weight:650}
h1{font-size:clamp(22px,3vw,30px)}
h2{font-size:clamp(18px,2.4vw,23px)}
h3{font-size:17px}
p{margin:0 0 14px}
code,pre,kbd,tt{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:12.5px}
pre{margin:0 0 16px;overflow:auto}
ul,ol{margin:0 0 14px;padding-left:22px}
li{margin:0 0 6px}
img{max-width:100%}
hr{border:0;border-top:1px solid var(--line);margin:28px 0}

/* ---------- Skip link + header ---------- */
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:8px 14px;border-radius:0 0 8px 0;z-index:100}
.skip:focus{left:0}
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,250,247,.9);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--line)}
.site-bar{display:flex;align-items:center;gap:14px;max-width:var(--maxw);margin:0 auto;padding:0 24px;height:62px}
.ks-badge{display:inline-block;color:var(--ks-color,#2563eb);vertical-align:middle;transition:color .15s}
.ks-badge:hover{color:var(--accent-ink)}
.ks-badge text{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
.ks-badge{width:40px;height:40px;flex-shrink:0}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.1;gap:5px;white-space:nowrap}
.brand-text b{font-size:18px;font-weight:650;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand-text span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;white-space:nowrap}

/* ---------- Top bar nav: grouped dropdowns + cta ---------- */
.nav-wrap{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav-group{position:relative}
.nav-toggle{
  display:inline-flex;align-items:center;gap:6px;
  background:transparent;border:1px solid transparent;border-radius:7px;
  padding:7px 11px;font-size:14px;color:var(--ink-soft);
  cursor:pointer;font-weight:550;white-space:nowrap;
}
.nav-toggle:hover{background:var(--panel-2);text-decoration:none;color:var(--ink)}
.nav-toggle[aria-expanded="true"]{background:var(--accent-soft);color:var(--accent-ink);border-color:var(--accent)}
.nav-toggle .arrow{font-size:10px;transition:transform .15s;display:inline-block}
.nav-toggle[aria-expanded="true"] .arrow{transform:rotate(180deg)}
.nav-dropdown{
  position:absolute;top:calc(100% + 6px);left:0;
  min-width:230px;max-width:290px;
  background:var(--panel);
  border:none;border-radius:0;
  padding:5px 0;z-index:40;
  opacity:0;visibility:hidden;
  transform:translateY(-3px);
  transition:opacity .12s ease, transform .12s ease, visibility .12s;
}
.nav-group:hover > .nav-dropdown,
.nav-group:focus-within > .nav-dropdown,
.nav-group.open > .nav-dropdown{
  opacity:1;visibility:visible;transform:translateY(0);
}
.nav-dropdown a{display:block;padding:7px 11px;border-radius:0;font-size:14px;color:var(--ink);text-decoration:none}
.nav-dropdown a:hover{background:var(--panel-2);text-decoration:none;color:var(--accent-ink)}
.nav-dropdown .sep{height:1px;background:var(--line);margin:4px 6px}
.nav-dropdown .grp-label{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:6px 12px 2px;font-weight:600}
.nav-ext{font-size:12px;color:var(--muted);padding:4px 12px 8px}
.nav-cta{
  display:inline-flex;align-items:center;
  background:var(--ink);color:#fff;padding:8px 13px;border-radius:8px;
  font-size:13.5px;font-weight:550;text-decoration:none;
}
.nav-cta:hover{background:#000;text-decoration:none}
.nav-cta .arr{margin-left:6px;color:#cdd0d5}

.menu-toggle{
  display:none;background:transparent;border:1px solid var(--line-2);
  border-radius:8px;padding:7px 10px;font-size:13px;color:var(--ink);cursor:pointer;
}
.menu-toggle:hover{background:var(--panel-2)}
.menu-toggle[aria-expanded="true"]{background:var(--panel-2)}

/* ---------- Mobile hamburger drawer ---------- */
@media (max-width:980px){
  .nav-wrap{display:none;flex-direction:column;gap:1px;width:100%;
    position:absolute;top:62px;left:0;right:0;
    background:rgba(251,250,247,.98);border-bottom:1px solid var(--line);
    padding:6px 14px 16px;box-shadow:var(--shadow-lg);z-index:40}
  .nav-wrap.open{display:flex}
  .nav-group{margin-bottom:1px;padding:2px 0}
  .nav-group.open > .nav-dropdown{
    position:static;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:none;background:transparent;padding:0 0 4px;max-width:none}
  .nav-dropdown a{display:flex;justify-content:space-between;padding:7px 2px;border-radius:0}
  .nav-dropdown .sep{display:none}
  .nav-cta{display:block;width:100%;justify-content:center;margin-top:8px;border:1px solid var(--ink)}
  .menu-toggle{display:inline-flex}
  .menu-toggle[aria-expanded="true"]{background:var(--panel-2)}
  .site-bar{padding:0 16px}
  .wrap{padding:0 16px}
  .nav-toggle{padding:8px 11px}
}
@media (max-width:640px){
  .site-bar{gap:10px;padding:0 12px}
  .brand-text b{font-size:16px}
  .nav-toggle{padding:7px 10px;font-size:13.5px}
}

/* ---------- Layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{scroll-margin-top:84px}
.page{padding:46px 0 80px}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(180deg,#ffffff 0%,var(--bg) 100%);border-bottom:1px solid var(--line);padding:54px 0 38px}
.hero .wrap{display:grid;grid-template-columns:1fr;gap:22px}
.hero h1{margin:0 0 14px;max-width:20ch}
.hero .lede{font-size:18px;line-height:1.55;color:var(--ink-soft);max-width:60ch}
.hero .meta{font-size:13.5px;color:var(--muted);display:flex;gap:18px;flex-wrap:wrap;margin-top:6px}

/* ---------- Definitions / callout ---------- */
.callout{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
.callout .label{font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px;display:block}
.callout h3{margin:0 0 8px;font-size:15.5px}
.callout p:last-child{margin-bottom:0}

/* ---------- Challenge triplet (enterprise) ---------- */
.triplet{display:grid;grid-template-columns:1fr;gap:14px;margin:0 0 18px}
.challenge{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:16px 18px;box-shadow:var(--shadow)}
.challenge .tag{display:inline-block;font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;padding:3px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent-ink);margin-bottom:10px;font-weight:600}
.challenge h3{margin:0 0 8px;font-size:16.5px}
.challenge p{margin:0 0 8px}
.challenge p:last-child{margin-bottom:0}

/* ---------- Sources table (enterprise) ---------- */
.table-wrap{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:14px}
caption{caption-side:top;text-align:left;font-size:12.5px;color:var(--muted);padding:10px 14px;border-bottom:1px solid var(--line)}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;background:var(--panel-2)}
tbody tr:nth-child(even){background:var(--panel-2)}
.table-wrap .foot{padding:10px 14px;font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);background:var(--panel-2)}

/* ---------- Scene / walkthrough (personal) ---------- */
.scene{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:18px 20px;box-shadow:var(--shadow);margin:0 0 18px}
.scene .step{display:flex;gap:14px;align-items:flex-start;margin:0 0 14px}
.scene .step:last-child{margin-bottom:0}
.scene .num{flex:none;display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background:var(--amber-soft);color:var(--amber);font-weight:700;font-size:13px}
.scene h3{margin:0 0 4px;font-size:15.5px}
.scene p{margin:0}

/* privacy checklist */
.checklist{list-style:none;padding-left:0}
.checklist li{position:relative;padding-left:26px;margin-bottom:10px}
.checklist li:before{content:"";position:absolute;left:0;top:1px;width:16px;height:16px;border-radius:4px;border:1.5px solid var(--line-2);background:var(--panel)}
.checklist li.privacy:before{background:var(--accent);border-color:var(--accent)}
.checklist li.privacy:after{content:"";position:absolute;left:4px;top:1px;width:7px;height:11px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}

/* ---------- Pattern blocks (context eng) ---------- */
.pattern{border:1px solid var(--line);border-left:3px solid var(--purple);border-radius:var(--radius);background:var(--panel);padding:16px 18px;box-shadow:var(--shadow);margin:0 0 14px}
.pattern h3{margin:0 0 6px;font-size:16px}
.pattern .purpose{font-size:13.5px;color:var(--ink-soft);margin:0 0 10px}
.pattern dl{margin:0}
.pattern dt{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;margin-top:8px}
.pattern dd{margin:0 0 4px;font-size:14px}

/* ---------- Research note table (token) ---------- */
.research-note{font-size:14.5px}
.research-note ul{margin:0 0 14px}
.research-note li{margin-bottom:8px}
.cost-table{font-size:14px}
.cost-table td:first-child{font-weight:600;width:38%}

/* ---------- FAQ ---------- */
.faq-section{margin-top:34px;border-top:1px solid var(--line);padding-top:22px}
.faq-section h2{font-size:20px;margin-bottom:14px}
.faq{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.faq .q{padding:14px 18px;border-bottom:1px solid var(--line);font-weight:600;cursor:pointer;display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq .q:last-child{border-bottom:0}
.faq .q .open{background:transparent;border:0;color:var(--muted);font-size:13px;padding:2px 6px;border-radius:5px}
.faq .q .open[aria-expanded="true"]{background:var(--accent-soft);color:var(--accent-ink)}
.faq .a{display:none;padding:0 18px 14px;color:var(--ink-soft)}
.faq .a.open{display:block}

/* ---------- Bio / about block ---------- */
.bio-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.bio-card h2{font-size:18px;margin:0 0 10px}
.bio-card p{margin:0 0 10px}
.bio-card .credits{font-size:13.5px;color:var(--ink-soft);border-top:1px solid var(--line);padding-top:10px;margin-top:10px}

/* ---------- Contact ---------- */
.contact-card{max-width:620px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:26px 28px;box-shadow:var(--shadow-lg)}
.contact-card h1{margin:0 0 6px;font-size:clamp(22px,3vw,28px)}
.contact-card .sub{color:var(--ink-soft);margin:0 0 20px;font-size:15.5px}
.contact-email{display:inline-flex;align-items:center;gap:10px;background:var(--ink);color:#fff;padding:11px 16px;border-radius:9px;font-size:15px;margin:0 0 18px}
.contact-email svg{width:18px;height:18px}
.contact-links{display:flex;flex-wrap:wrap;gap:10px}
.contact-links a{padding:9px 14px;border:1px solid var(--line-2);border-radius:8px;font-size:14px;background:var(--panel-2);color:var(--ink)}
.contact-links a:hover{background:var(--bg);text-decoration:none}
.disclaimer{font-size:13px;color:var(--muted);margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--panel);margin-top:30px}
.site-footer .wrap{padding:22px 24px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.site-footer a{color:var(--ink-soft)}

/* ---------- Sources block at page bottom ---------- */
.sources{font-size:12.5px;color:var(--muted);border-top:1px solid var(--line);margin-top:32px;padding-top:12px}
.sources h2{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 6px}
.sources ol{margin:0;padding-left:18px}
.sources li{margin-bottom:4px}

/* ---------- Misc ---------- */
.prose h2{margin-top:26px}
.lead{font-size:16.5px;color:var(--ink-soft);line-height:1.55}
.small{font-size:13px;color:var(--muted)}
.kicker{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent-ink);font-weight:600;margin-bottom:8px;display:block}
.read-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;margin-top:6px}
.read-more:after{content:"→";transition:transform .15s}
.read-more:hover:after{transform:translateX(3px)}

/* ---------- Responsive ---------- */
@media (max-width:880px){
  .site-bar{padding:10px 16px}
  .wrap{padding:0 16px}
  .nav-primary{display:none;position:fixed;top:54px;left:0;right:0;background:rgba(251,250,247,.97);border-bottom:1px solid var(--line);padding:10px 16px;flex-direction:column;gap:4px;box-shadow:var(--shadow-lg);z-index:40}
  .nav-primary.open{display:flex}
  .menu-toggle{display:inline-flex}
  .menu-toggle[aria-expanded="true"]{background:var(--panel-2)}
  .hero h1{font-size:clamp(20px,5.5vw,26px)}
  .hero .lede{font-size:16.5px}
}

/* ---------- Per-page accent overrides ---------- */
body.page-why-knowledge{--accent:#2563eb;--accent-ink:#1a4fbd}
body.page-enterprise{--accent:#0f766e;--accent-ink:#0b5e56}
body.page-personal{--accent:#b45309;--accent-ink:#8f4307}
body.page-context{--accent:#6d28d9;--accent-ink:#531adb}
body.page-token{--accent:#047857;--accent-ink:#035945}
body.page-contact{--accent:#1c1a17;--accent-ink:#1c1a17}