/* ===================================================================
   AlethiaStruct — shared site shell (inner pages)
   Dark default · light/architectural toggle · IBM Plex Sans Hebrew
   =================================================================== */
:root{
  --abyss:#01030a; --deep:#040813; --card:#0a1322; --elev:#101c30;
  --text:#f6f9ff; --soft:#c3cfe0; --mute:#7d8aa3; --faint:#4a5670;
  --teal:#67e8f9; --teal-bright:#7dd3fc; --teal-deep:#38bdf8;
  --gold:#fde047;
  --line:rgba(125,211,252,.14); --line-soft:rgba(180,200,230,.08);
  --grad-accent:linear-gradient(100deg,#7dd3fc 0%,#67e8f9 45%,#e8f0ff 100%);
  --maxw:1240px;
}
html.light{
  --abyss:#f4f1ea; --deep:#ece8de; --card:#fbfaf6; --elev:#f1ede4;
  --text:#16191c; --soft:#363c44; --mute:#5b6168; --faint:#8b9099;
  --teal:#bf4a1a; --teal-bright:#e0571f; --teal-deep:#a23d15; --gold:#bf4a1a;
  --line:rgba(20,25,30,.16); --line-soft:rgba(20,25,30,.08);
  --grad-accent:linear-gradient(100deg,#bf4a1a,#e0651f);
}
*{margin:0;padding:0;box-sizing:border-box}
::selection{background:rgba(103,232,249,.22);color:#fff}
html.light ::selection{background:rgba(191,74,26,.18);color:#16191c}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
  font-family:'IBM Plex Sans Hebrew','Segoe UI',-apple-system,sans-serif;
  background:var(--abyss); color:var(--text); line-height:1.65; overflow-x:hidden;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  transition:background .35s,color .35s;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.mono{font-family:'JetBrains Mono',monospace}
.accent{color:var(--teal)}

/* ---------- accessibility: skip link + visible focus ---------- */
.skip-link{position:absolute;inset-inline-start:50%;transform:translateX(50%);top:-200px;z-index:1000;
  background:var(--teal);color:#02101a;font-weight:600;padding:10px 20px;border-radius:0 0 8px 8px;transition:top .2s}
html[dir="ltr"] .skip-link{transform:translateX(-50%)}
.skip-link:focus{top:0;outline:none}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:4px}
a.accent{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}

/* ---------- header ---------- */
header{position:fixed;top:0;inset-inline:0;z-index:100;padding:18px 0;transition:.35s;border-bottom:1px solid transparent}
header.scrolled{background:rgba(4,8,19,.72);backdrop-filter:blur(16px) saturate(1.2);border-bottom:1px solid var(--line);padding:12px 0}
html.light header.scrolled{background:rgba(244,241,234,.86)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:20px;letter-spacing:.2px;color:var(--text)}
.brand .logo-mark{width:34px;height:34px;flex:none;object-fit:contain}
.brand b{font-weight:800}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{color:var(--soft);font-size:14.5px;font-weight:500;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--teal)}
.nav-right{display:flex;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14.5px;padding:11px 22px;border-radius:8px;cursor:pointer;transition:.2s;border:1px solid transparent;white-space:nowrap;font-family:inherit}
.btn-primary{background:var(--grad-accent);color:#02101a}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal)}
.nav-cta-mobile{display:none}
.lang-switch{display:flex;align-items:center;gap:6px;background:rgba(125,150,180,.06);border:1px solid var(--line-soft);border-radius:30px;padding:4px}
.flag-btn{display:flex;align-items:center;justify-content:center;width:34px;height:24px;border-radius:5px;cursor:pointer;opacity:.4;transition:.2s;border:none;background:none;padding:0;position:relative}
.flag-btn::after{content:"";position:absolute;inset:-11px 0} /* 44px tap area, no visual change */
.flag-btn svg{width:34px;height:24px;display:block;border-radius:4px}
.flag-btn:hover{opacity:.85;transform:translateY(-1px)}
.flag-btn.active{opacity:1;box-shadow:0 0 0 2px var(--teal)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:9px;flex:none;cursor:pointer;border:1px solid var(--line);background:rgba(125,150,180,.06);color:var(--soft);transition:.2s;position:relative}
.theme-toggle::after{content:"";position:absolute;inset:-6px} /* 44px+ tap area, no visual change */
.theme-toggle:hover{color:var(--teal);border-color:var(--teal)}
.theme-toggle svg{width:18px;height:18px}
.theme-toggle .ic-sun{display:none}
html.light .theme-toggle .ic-sun{display:block}
html.light .theme-toggle .ic-moon{display:none}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:6px;position:relative}
.hamburger::after{content:"";position:absolute;inset:-8px -10px} /* 44px tap area, no visual change */
.hamburger span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ---------- inner-page hero band ---------- */
.page-hero{position:relative;padding:clamp(130px,18vh,190px) 0 clamp(50px,7vw,90px);border-bottom:1px solid var(--line-soft);overflow:hidden}
.page-hero::before{content:'';position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:48px 48px;-webkit-mask-image:radial-gradient(120% 90% at 50% 0,#000 40%,transparent 80%);mask-image:radial-gradient(120% 90% at 50% 0,#000 40%,transparent 80%)}
.page-hero .wrap{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:2.5px;text-transform:uppercase;color:var(--teal);margin-bottom:20px}
.eyebrow::before{content:'';width:30px;height:1px;background:var(--teal)}
.page-hero h1{font-family:'IBM Plex Sans Hebrew',sans-serif;font-size:clamp(36px,5.4vw,68px);font-weight:700;line-height:1.05;letter-spacing:-1.3px;margin-bottom:22px;max-width:800px}
.page-hero p{font-size:clamp(17px,1.8vw,21px);font-weight:300;color:var(--soft);max-width:640px;line-height:1.65;letter-spacing:.2px;word-spacing:.06em}
.doc-meta{display:inline-block;margin-top:18px;font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--faint)}

/* ---------- sections ---------- */
.section{padding:clamp(80px,9vw,140px) 0;position:relative}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:18px}
.sec-idx{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--teal-deep);letter-spacing:1px}
.sec-tag{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:3px;text-transform:uppercase;color:var(--mute)}
.sec-line{flex:1;height:1px;background:linear-gradient(90deg,var(--line),transparent)}
.section-title{font-family:'IBM Plex Sans Hebrew',sans-serif;font-size:clamp(30px,4.3vw,54px);font-weight:700;line-height:1.12;letter-spacing:-1px;margin-bottom:16px;max-width:820px}
.section-lead{font-size:clamp(16px,1.7vw,20px);color:var(--soft);max-width:660px;line-height:1.75}

/* editorial rows (hairline, no cards) */
.rows{margin-top:42px;border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:minmax(120px,200px) 1fr;gap:clamp(20px,5vw,64px);padding:32px 6px;border-bottom:1px solid var(--line-soft);align-items:start;transition:.25s}
.row:hover{background:rgba(125,150,180,.03);padding-inline-start:18px}
.row .k{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--teal-deep);letter-spacing:.5px;padding-top:4px}
.row h3{font-size:19px;font-weight:600;margin-bottom:6px}
.row p{font-size:14.5px;color:var(--mute);line-height:1.65;max-width:620px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line-soft);padding:42px 0 34px}
.foot{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.foot .brand{font-size:18px}
.foot-links{display:flex;gap:22px;flex-wrap:wrap}
.foot-links a{font-size:14px;color:var(--mute);transition:.2s}
.foot-links a:hover{color:var(--teal)}
.foot-note{font-size:12.5px;color:var(--faint);margin-top:22px;text-align:center;font-family:'JetBrains Mono',monospace}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

@media(max-width:860px){
  header,header.scrolled{padding:12px 0}
  .nav-links{position:fixed;inset:58px 0 auto 0;flex-direction:column;background:var(--deep);backdrop-filter:blur(14px);padding:16px 28px;gap:4px;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:.35s;align-items:stretch}
  .nav-links.open{transform:translateY(0)}
  .nav-links a:not(.btn){display:flex;align-items:center;width:100%;min-height:44px;padding:10px 0;font-size:16px}
  .nav-links .nav-cta-mobile{margin-top:8px;justify-content:center}
  .hamburger{display:flex}
  .nav-cta-desktop{display:none}
  .nav-cta-mobile{display:inline-flex}
  .row{grid-template-columns:1fr;gap:8px}
}
@media(max-width:600px){
  .section{padding:56px 0}
  .page-hero{padding:104px 0 44px}
  .page-hero h1{font-size:clamp(28px,8vw,40px);letter-spacing:-.8px}
}
@media(max-width:480px){
  .wrap{padding-left:16px;padding-right:16px}
  .nav{gap:10px}
  .nav-right{gap:9px}
  .brand{font-size:17px;gap:8px}
  .brand .logo-mark{width:30px;height:30px}
  .lang-switch{gap:4px;padding:3px}
  .flag-btn,.flag-btn svg{width:32px;height:22px}
  .theme-toggle{width:36px;height:36px}
}
@media(hover:none){
  .row:hover{padding-inline-start:6px;background:transparent}
}