/* ==========================================================================
   Re: Sach v3 — the blueprint canvas
   --------------------------------------------------------------------------
   Dark blueprint reading room (DESIGN_LANGUAGE.md §2 · ReSach v3 row).
   One design system, six live product accents. STIX Two Text for reading,
   JetBrains Mono for labels/numbers. Geometry everywhere; motion gated
   behind prefers-reduced-motion (see static/_shared/motion.css).

   Per-product accent is set by each page via the {% block accent %} in
   base.html; everything below consumes var(--accent). Legacy token names
   from the retired parchment room (--paper/--card/--ox/--anno…) are kept as
   ALIASES onto the blueprint palette so every shipped template reskins
   without a per-line rewrite — verdict semantics (green/amber/red) stay
   fixed regardless of the product accent.
   ========================================================================== */

:root{
  /* blueprint canvas */
  --bg:#081221;
  --panel:#0E1B2C;
  --panel-2:#122439;
  --ink:#E9F4FB;
  --ink-2:#C4D6E4;
  --dim:#8CA6BA;
  --line:rgba(143,232,255,.14);
  --line-2:rgba(143,232,255,.08);
  --grid:rgba(143,232,255,.07);
  --grid-minor:rgba(143,232,255,.045);

  /* per-product accent — overridden by {% block accent %} in base.html */
  --accent:#8FE8FF;
  --accent-soft:rgba(143,232,255,.13);

  /* fixed verdict semantics — never change with the accent */
  --good:#7FE6B0;  --good-soft:rgba(127,230,176,.14);
  --warn:#FFD98A;  --warn-soft:rgba(255,217,138,.14);
  --bad:#FF8FA3;   --bad-soft:rgba(255,143,163,.15);
  --sky:#8FB4FF;   --sky-soft:rgba(143,180,255,.14);

  /* ── legacy aliases: shipped templates keep working on the new canvas ── */
  --paper:var(--bg);
  --card:var(--panel);
  --anno:var(--sky);        --anno-soft:var(--sky-soft);
  --ox:var(--bad);          --ox-soft:var(--bad-soft);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"STIX Two Text",Georgia,"Times New Roman",serif;
  background:var(--bg);color:var(--ink);line-height:1.68;
  -webkit-font-smoothing:antialiased;font-size:17px;
  overflow-x:hidden;
}

/* ── the blueprint grid (24px minor / 96px major) + horizon fade ───────── */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px),
    linear-gradient(var(--grid-minor) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-minor) 1px,transparent 1px);
  background-size:96px 96px,96px 96px,24px 24px,24px 24px;
  background-position:center -1px;
  -webkit-mask-image:radial-gradient(ellipse 130% 92% at 50% -6%,#000 45%,transparent 100%);
  mask-image:radial-gradient(ellipse 130% 92% at 50% -6%,#000 45%,transparent 100%);
}
/* corner registration marks — the drafting-table signature */
.rs-reg{position:fixed;width:16px;height:16px;z-index:1;pointer-events:none;opacity:.5}
.rs-reg::before,.rs-reg::after{content:"";position:absolute;background:var(--accent)}
.rs-reg::before{left:7px;top:0;width:1px;height:16px}
.rs-reg::after{top:7px;left:0;height:1px;width:16px}
.rs-reg.tl{left:12px;top:70px}.rs-reg.tr{right:12px;top:70px}
.rs-reg.bl{left:12px;bottom:12px}.rs-reg.br{right:12px;bottom:12px}
@media(max-width:720px){.rs-reg{display:none}}

/* ── type ──────────────────────────────────────────────────────────────── */
h1,h2,h3,h4,.serif{font-family:"STIX Two Text",Georgia,serif;font-weight:600;letter-spacing:-.01em;line-height:1.18;color:var(--ink)}
h1{font-size:clamp(2rem,5vw,3.1rem)}
.mono{font-family:"JetBrains Mono",ui-monospace,monospace}
.dim{color:var(--dim)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
em{font-style:italic;color:var(--accent)}
.wrap{max-width:1040px;margin:0 auto;padding:0 22px}
.sec{padding:56px 0}

/* mono eyebrow — TNC signature, tinted by the product accent */
.eyebrow{font-family:"JetBrains Mono",monospace;font-size:.7rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--accent);display:inline-block}
.eyebrow::before{content:"";display:inline-block;width:22px;height:1px;background:var(--accent);
  vertical-align:middle;margin-right:10px;opacity:.7}
.rs-idx{font-family:"JetBrains Mono",monospace;font-size:.66rem;letter-spacing:.16em;color:var(--dim)}

/* ── dimension-line divider (geometric section break) ──────────────────── */
.rs-rule{display:flex;align-items:center;gap:10px;color:var(--line);margin:34px 0}
.rs-rule::before,.rs-rule::after{content:"";height:1px;background:linear-gradient(90deg,transparent,var(--line-2),var(--line-2),transparent);flex:1}
.rs-rule i{width:7px;height:7px;border:1px solid var(--accent);border-radius:50%;flex:none;opacity:.7}
.rs-rule.plus i{border-radius:0;border:0;position:relative;width:12px;height:12px}
.rs-rule.plus i::before,.rs-rule.plus i::after{content:"";position:absolute;background:var(--accent)}
.rs-rule.plus i::before{left:5px;top:0;width:1px;height:12px}
.rs-rule.plus i::after{top:5px;left:0;height:1px;width:12px}

/* ── buttons ───────────────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:7px;padding:10px 18px;border-radius:9px;
  font-weight:600;font-size:.92rem;font-family:"JetBrains Mono",monospace;letter-spacing:.01em;
  text-decoration:none;border:1px solid var(--line);color:var(--ink);background:transparent;
  cursor:pointer;transition:border-color .2s,transform .2s,box-shadow .2s,background .2s}
.btn:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 6px 22px -12px var(--accent);text-decoration:none}
.btn-ox,.btn-accent{background:var(--accent);border-color:var(--accent);color:#08131f;font-weight:700}
.btn-ox:hover,.btn-accent:hover{background:var(--accent);box-shadow:0 8px 26px -10px var(--accent);color:#08131f}
.btn[disabled]{opacity:.4;pointer-events:none}
.btn .arr,.btn::after{transition:transform .22s cubic-bezier(.2,.7,.2,1)}
.btn:hover .arr{transform:translateX(4px)}

/* ── panels / cards ────────────────────────────────────────────────────── */
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px 22px;
  position:relative;transition:border-color .25s,box-shadow .25s,transform .25s}
a.card:hover,.card.hoverable:hover{border-color:var(--accent);box-shadow:0 10px 34px -18px var(--accent);transform:translateY(-2px)}

/* form fields */
input[type=text],input[type=email],textarea,select{width:100%;padding:11px 13px;border:1px solid var(--line);
  border-radius:9px;font:inherit;font-family:"JetBrains Mono",monospace;font-size:.9rem;
  background:#0a1626;color:var(--ink)}
input:focus,textarea:focus,select:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}
label{color:var(--ink-2)}

/* ── chips + semantic verdict helpers ──────────────────────────────────── */
.chip{display:inline-block;font-family:"JetBrains Mono",monospace;font-size:.66rem;letter-spacing:.04em;
  padding:2px 9px;border-radius:6px;background:var(--accent-soft);color:var(--accent);border:1px solid transparent}
.chip.line{background:transparent;border-color:var(--line);color:var(--dim)}
.is-good{color:var(--good)!important;background:var(--good-soft)}
.is-warn{color:var(--warn)!important;background:var(--warn-soft)}
.is-bad{color:var(--bad)!important;background:var(--bad-soft)}
.is-sky{color:var(--sky)!important;background:var(--sky-soft)}
.t-good{color:var(--good)}.t-warn{color:var(--warn)}.t-bad{color:var(--bad)}.t-sky{color:var(--sky)}.t-accent{color:var(--accent)}

/* ── nav ───────────────────────────────────────────────────────────────── */
.rs-nav{position:sticky;top:0;z-index:60;background:rgba(8,18,33,.86);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.rs-nav .wrap{display:flex;align-items:center;justify-content:space-between;height:58px;gap:14px;max-width:1180px}
.rs-logo{font-family:"STIX Two Text",serif;font-weight:600;font-size:1.24rem;color:var(--ink);text-decoration:none;white-space:nowrap;letter-spacing:.01em}
.rs-logo .co{color:var(--accent)}
.rs-logo small{font-family:"JetBrains Mono",monospace;font-weight:400;font-size:.6rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--dim);margin-left:9px;vertical-align:2px}
.rs-links{display:flex;gap:16px;align-items:center;font-family:"JetBrains Mono",monospace;font-size:.76rem}
.rs-links a{color:var(--dim);text-decoration:none;letter-spacing:.03em}
.rs-links a:hover,.rs-links a.on{color:var(--accent);text-decoration:none}
.rs-links .nav-cta{color:#08131f}
@media(max-width:960px){.rs-links .hide-md{display:none}}
@media(max-width:640px){.rs-links{gap:12px;font-size:.72rem}.rs-links .hide-sm{display:none}}

/* ── claim marginalia (used across spine / gaps / twin) ────────────────── */
.claim{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-top:1px dashed var(--line);font-size:.9rem}
.claim:first-child{border-top:0}
.claim .tag{font-family:"JetBrains Mono",monospace;font-size:.64rem;font-weight:600;flex:none;margin-top:3px;padding:1px 7px;border-radius:5px}
.claim .tag.p{background:var(--sky-soft);color:var(--sky)}
.claim .tag.c{background:var(--accent-soft);color:var(--accent)}
.claim .sv{font-family:"JetBrains Mono",monospace;font-size:.64rem;color:var(--dim);flex:none;margin-top:4px;margin-left:auto;white-space:nowrap}
/* dual score meter (soundness over validity) */
.meter2{width:64px;flex:none;margin-top:7px}
.meter2 i{display:block;height:3px;border-radius:2px;background:var(--line);margin:2px 0;position:relative;overflow:hidden}
.meter2 i b{position:absolute;inset:0;right:auto;border-radius:2px;background:var(--sky)}
.meter2 i:last-child b{background:var(--accent)}

/* single labelled meter (twin / validate) */
.meter{height:5px;border-radius:99px;background:var(--line);overflow:hidden}
.meter b{display:block;height:100%;border-radius:99px;background:var(--accent);width:0;transition:width .8s cubic-bezier(.2,.7,.2,1)}

/* ── the lineage spine ─────────────────────────────────────────────────── */
.spine{position:relative;padding-left:34px}
.spine::before{content:"";position:absolute;left:10px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(var(--line),var(--line-2))}
.spine-item{position:relative;margin:0 0 22px}
.spine-item::before{content:"";position:absolute;left:-30px;top:15px;width:11px;height:11px;border-radius:50%;
  background:var(--bg);border:1px solid var(--dim)}
.spine-item.decomposed::before{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 4px var(--accent-soft)}
.spine-item .yr{position:absolute;left:-35px;top:34px;transform:rotate(180deg);writing-mode:vertical-rl;
  font-family:"JetBrains Mono",monospace;font-size:.6rem;color:var(--dim);letter-spacing:.08em}
.seal{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--bad);
  box-shadow:0 0 0 3px var(--bad-soft);vertical-align:middle}

/* count-up number style */
.rs-num{font-family:"STIX Two Text",serif;font-weight:600}

/* ── footer ────────────────────────────────────────────────────────────── */
.footer{border-top:1px solid var(--line);padding:30px 0;margin-top:60px;font-size:.85rem;color:var(--dim)}
.footer a{color:var(--ink-2)}

/* node-pulse (Map graph + hero motifs) */
@keyframes rs-pulse{0%,100%{opacity:.5;r:var(--r0)}50%{opacity:1}}
@media(prefers-reduced-motion:reduce){*{animation:none!important}}

@media(max-width:720px){.wrap{padding:0 15px}.sec{padding:38px 0}body{font-size:16px}}