/* ============================================================
   LIAISON · GLOBAL LIGHT SYSTEM · v1.0 (Phase 0.2 — F1/P1)
   Shared across liaisongrp.com + partner.liaisongrp.com
   Source of truth: approved Claude Design light system (Jul 2026)
   ------------------------------------------------------------
   BAKED-IN RULES (do not override in pages):
   1. NO grid texture anywhere (smooth look is locked).
   2. backdrop-filter allowed ONLY on .lia-navbar and .mobile-drawer.
      Everything else uses solid/gradient fallbacks (mobile GPU).
   3. Ambient glows are radial-gradients, never filter:blur().
   4. Product mock imagery stays dark; page chrome stays light.
   ============================================================ */

:root{
  /* Surfaces */
  --lia-bg:#CAD5EB;               /* page wash */
  --lia-bg-2:#D8E1F2;             /* lighter wash stop */
  --lia-card:rgba(255,255,255,0.55);
  --lia-card-strong:rgba(255,255,255,0.72);
  --lia-card-border:rgba(255,255,255,0.75);
  --lia-line:rgba(20,40,100,0.12);

  /* Ink */
  --lia-ink:#0A1547;              /* headlines / navy ink */
  --lia-body:rgba(27,39,70,0.66); /* body copy */
  --lia-faint:rgba(27,39,70,0.45);

  /* Brand blues */
  --lia-blue-deep:#0537B6;
  --lia-blue:#1a54e8;
  --lia-blue-bright:#6699ff;
  --lia-blue-pale:#a9c4ff;

  /* Product accents (page-scoped via [data-accent]) */
  --lia-accent:var(--lia-blue);
  --lia-accent-soft:rgba(26,84,232,0.12);

  /* Type */
  --lia-font:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  --lia-mono:'DM Mono',ui-monospace,monospace;

  /* Shape */
  --lia-r-card:22px;
  --lia-r-pill:100px;
}

[data-accent="conduit"]{ --lia-accent:#E8920A; --lia-accent-soft:rgba(232,146,10,0.12); }
[data-accent="portal"] { --lia-accent:#7C4AE8; --lia-accent-soft:rgba(124,74,232,0.12); }
[data-accent="airis"]  { --lia-accent:#1793B8; --lia-accent-soft:rgba(23,147,184,0.12); }
[data-accent="keep"]   { --lia-accent:#12A15E; --lia-accent-soft:rgba(18,161,94,0.12); }

/* ---------- Fonts (self-hosted; same paths in both repos) ---------- */
@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:200 800;font-display:swap;
  src:url('/fonts/PlusJakartaSans-Variable-latin.woff2') format('woff2-variations'),
      url('/fonts/PlusJakartaSans-Variable-latin.woff2') format('woff2');}
@font-face{font-family:'DM Mono';font-style:normal;font-weight:400;font-display:swap;
  src:url('/fonts/DMMono-Regular-latin.woff2') format('woff2');}
@font-face{font-family:'DM Mono';font-style:normal;font-weight:500;font-display:swap;
  src:url('/fonts/DMMono-Medium-latin.woff2') format('woff2');}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--lia-bg);color:var(--lia-ink);
  font-family:var(--lia-font);-webkit-font-smoothing:antialiased;
  line-height:1.5;overflow-x:hidden;min-height:100vh;
}
a,button,input,select,textarea{-webkit-tap-highlight-color:transparent;font-family:inherit}
img{max-width:100%;display:block}

.font-display{font-weight:800;letter-spacing:-0.03em;color:var(--lia-ink)}
/* Gradient headlines: padding-bottom prevents descender clipping (y/p/g)
   caused by background-clip:text + tight line-height. Known fix from
   /packages. ALWAYS use .h-grad for gradient text; never redefine it. */
.h-grad{background:linear-gradient(158deg,var(--lia-blue) 0%,var(--lia-ink) 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  padding-bottom:0.12em;margin-bottom:-0.04em}
[data-accent] .h-grad.accent{background:linear-gradient(158deg,var(--lia-accent) 0%,var(--lia-ink) 92%);
  -webkit-background-clip:text;background-clip:text}
.mono-label{font-family:var(--lia-mono);font-size:11px;text-transform:uppercase;letter-spacing:0.12em;color:var(--lia-faint)}

/* ---------- Ambient background (zero-cost; replaces blur(150px) blobs) ---------- */
.lia-atmos{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 62% 44% at 12% -6%, rgba(102,153,255,0.34), transparent 62%),
    radial-gradient(ellipse 58% 40% at 96% 4%,  rgba(26,84,232,0.20),  transparent 60%),
    radial-gradient(ellipse 46% 34% at 50% 58%, rgba(169,196,255,0.30), transparent 70%),
    linear-gradient(180deg,var(--lia-bg-2) 0%,var(--lia-bg) 46%);
}
/* GRID TEXTURE: intentionally absent. Do not reintroduce. */

/* ---------- Nav pill (blur budget: allowed here) ---------- */
.lia-navwrap{position:fixed;top:max(20px,env(safe-area-inset-top));left:0;right:0;z-index:100;
  display:flex;justify-content:center;padding:0 14px;pointer-events:none}
.lia-navbar{pointer-events:auto;display:flex;align-items:center;gap:14px;justify-content:space-between;
  padding:9px 9px 9px 18px;border-radius:var(--lia-r-pill);
  background:rgba(255,255,255,0.4);
  -webkit-backdrop-filter:blur(22px) saturate(180%);backdrop-filter:blur(22px) saturate(180%);
  border:1px solid rgba(255,255,255,0.7);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.9),0 10px 30px rgba(20,40,100,0.10);
  transition:background .25s ease}
.lia-navwrap.scrolled .lia-navbar{background:rgba(255,255,255,0.62)}
.lia-brand{display:flex;align-items:center;gap:9px;text-decoration:none}
.lia-brand .mark{width:24px;height:24px;border-radius:6px}
.lia-brand .wm{font-weight:800;font-size:16px;letter-spacing:-0.025em;color:var(--lia-ink)}
.lia-brand .co{font-weight:800;font-size:15px;letter-spacing:-0.01em;color:var(--lia-body);
  padding-left:10px;margin-left:2px;border-left:1px solid var(--lia-line)}
.nav-links{display:flex;align-items:center;gap:14px}
.nav-links a{color:var(--lia-body);font-size:14px;font-weight:500;white-space:nowrap;text-decoration:none;transition:color .15s}
.nav-links a:hover{color:var(--lia-ink)}

/* ---------- Buttons ---------- */
.btn-primary{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;cursor:pointer;border:none;
  text-decoration:none;font-weight:700;font-size:15px;color:#fff;padding:14px 28px;border-radius:var(--lia-r-pill);
  background:linear-gradient(90deg,var(--lia-blue-deep),var(--lia-blue));
  box-shadow:0 10px 26px rgba(5,55,182,0.35);transition:transform .18s ease,box-shadow .18s ease}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(5,55,182,0.45)}
[data-accent] .btn-primary.accent{background:linear-gradient(90deg,var(--lia-accent),var(--lia-accent));filter:saturate(1.05)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;cursor:pointer;text-decoration:none;
  font-weight:600;font-size:15px;color:var(--lia-blue);padding:14px 24px;border-radius:var(--lia-r-pill);
  background:rgba(255,255,255,0.35);border:1px solid rgba(26,84,232,0.35);transition:all .2s ease}
.btn-ghost:hover{background:rgba(255,255,255,0.6);border-color:var(--lia-blue)}

/* ---------- Cards (no backdrop-filter — solid light glass) ---------- */
.lia-card{position:relative;background:var(--lia-card);border:1px solid var(--lia-card-border);
  border-radius:var(--lia-r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.9),0 12px 30px rgba(20,40,100,0.08)}
.lia-card.strong{background:var(--lia-card-strong)}
.lia-glow{position:relative;overflow:hidden}
.lia-glow::before{content:'';position:absolute;inset:-30%;pointer-events:none;
  background:radial-gradient(circle at 70% 20%,var(--lia-accent-soft),transparent 60%)}
.lia-glow>*{position:relative}

/* ---------- Eyebrow / pills ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:var(--lia-r-pill);
  background:rgba(255,255,255,0.4);border:1px solid rgba(26,84,232,0.28)}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--lia-accent);
  box-shadow:0 0 10px var(--lia-accent);animation:liaPulse 2s ease-in-out infinite}
.eyebrow .txt{font-family:var(--lia-mono);font-size:11px;letter-spacing:0.14em;text-transform:uppercase;color:var(--lia-blue)}
@keyframes liaPulse{0%,100%{opacity:1}50%{opacity:.45}}

.serve-pill{display:inline-flex;align-items:center;gap:10px;padding:12px 20px;border-radius:var(--lia-r-pill);
  background:rgba(255,255,255,0.55);border:1px solid rgba(255,255,255,0.8);color:var(--lia-ink);
  font-weight:600;font-size:14px;text-decoration:none;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.serve-pill:hover{transform:translateY(-3px);border-color:var(--g,var(--lia-blue));
  box-shadow:0 0 0 1px var(--g,var(--lia-blue)),0 0 26px -2px var(--g,var(--lia-blue))}

/* ---------- Mobile drawer (blur budget: allowed here) ---------- */
.nav-burger{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;
  background:rgba(255,255,255,0.55);border:1px solid rgba(255,255,255,0.8);cursor:pointer;flex-shrink:0}
.burger-bars{display:flex;align-items:center;justify-content:center;line-height:0}
.burger-x{display:none;align-items:center;justify-content:center;line-height:0}
.nav-burger svg{display:block}
#lia-nav-toggle{display:none}
.nav-backdrop{display:none;position:fixed;inset:0;z-index:98;background:rgba(20,40,100,0.15)}
.mobile-drawer{display:none;position:fixed;top:118px;left:14px;right:14px;z-index:99;flex-direction:column;gap:4px;
  padding:16px;border-radius:24px;background:rgba(255,255,255,0.55);
  -webkit-backdrop-filter:blur(28px) saturate(180%);backdrop-filter:blur(28px) saturate(180%);
  border:1px solid rgba(255,255,255,0.85);box-shadow:0 24px 60px rgba(20,40,100,0.22)}
#lia-nav-toggle:checked ~ .nav-backdrop{display:block}
#lia-nav-toggle:checked ~ .mobile-drawer{display:flex}
#lia-nav-toggle:checked ~ .lia-navwrap .burger-bars{display:none}
#lia-nav-toggle:checked ~ .lia-navwrap .burger-x{display:flex}
.drawer-link{padding:14px 16px;border-radius:14px;color:var(--lia-ink);font-weight:600;font-size:17px;
  text-decoration:none;transition:background .15s ease}
.drawer-link:hover{background:rgba(26,84,232,0.07)}
.drawer-cta{margin-top:8px;justify-content:center}

/* ---------- FAQ accordion (from approved design) ---------- */
.faq-grid{display:grid;grid-template-columns:0.82fr 1.18fr;gap:30px 56px;max-width:1000px;margin:0 auto;align-items:start}
.faq-row{border-top:1px solid var(--lia-line)}
.faq-row:last-child{border-bottom:1px solid var(--lia-line)}
.faq-q{width:100%;margin:0;background:none;border:none;cursor:pointer;text-align:left;display:flex;
  align-items:center;justify-content:space-between;gap:24px;padding:24px 4px;font-weight:700;font-size:19px;
  letter-spacing:-0.015em;color:var(--lia-ink);transition:color .2s ease}
.faq-q:hover{color:var(--lia-blue)}
.faq-q .chev{flex-shrink:0;color:var(--lia-blue);transition:transform .3s cubic-bezier(0.16,1,0.3,1)}
.faq-row.open .faq-q .chev{transform:rotate(180deg)}
.faq-ans-wrap{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s cubic-bezier(0.16,1,0.3,1)}
.faq-row.open .faq-ans-wrap{grid-template-rows:1fr}
.faq-ans-inner{overflow:hidden;min-height:0}
.faq-ans{color:var(--lia-body);font-size:15px;line-height:1.65;padding:0 4px 24px;max-width:90%;
  opacity:0;transform:translateY(-4px);transition:opacity .3s ease .03s,transform .3s ease .03s}
.faq-row.open .faq-ans{opacity:1;transform:translateY(0)}

/* ---------- Forms ---------- */
.lia-input{width:100%;background:rgba(255,255,255,0.6);border:1px solid rgba(20,40,100,0.15);border-radius:16px;
  padding:16px 20px;font-size:16px;color:var(--lia-ink);outline:none;transition:all .2s ease}
.lia-input::placeholder{color:var(--lia-faint)}
.lia-input:focus{background:#fff;border-color:var(--lia-blue);box-shadow:0 0 0 4px rgba(26,84,232,0.15)}
.choice-pill{display:inline-flex;align-items:center;gap:9px;padding:12px 20px;border-radius:var(--lia-r-pill);
  border:1.5px solid var(--pc,rgba(20,40,100,0.2));background:var(--pb,rgba(255,255,255,0.5));
  color:var(--lia-ink);font-weight:600;font-size:15px;cursor:pointer;transition:all .2s ease}
.choice-pill:hover{transform:translateY(-2px)}
.choice-pill[aria-pressed="true"]{border-color:var(--pc,var(--lia-blue));
  box-shadow:0 0 0 1px var(--pc,var(--lia-blue)),0 8px 22px -6px var(--pc,var(--lia-blue))}

/* ---------- Footer ---------- */
.lia-footer{position:relative;z-index:2;border-top:1px solid var(--lia-line);
  background:linear-gradient(180deg,transparent,rgba(169,196,255,0.25));padding:64px 24px 40px}
.footer-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-h{font-family:var(--lia-mono);font-size:11px;letter-spacing:0.14em;text-transform:uppercase;
  color:var(--lia-ink);font-weight:500;margin:0 0 14px}
.footer-grid a{display:block;color:var(--lia-body);text-decoration:none;font-size:15px;padding:5px 0;transition:color .15s}
.footer-grid a:hover{color:var(--lia-ink)}
.footer-legal{max-width:1100px;margin:40px auto 0;text-align:center;color:var(--lia-faint);font-size:13px;line-height:1.7}

/* ---------- Reveal ---------- */
.reveal{transition:opacity .8s cubic-bezier(0.16,1,0.3,1),transform .8s cubic-bezier(0.16,1,0.3,1)}
.reveal.reveal-armed:not(.is-visible){opacity:0;transform:translateY(22px)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1!important;transform:none!important;transition:none}
  .faq-ans-wrap,.faq-ans,.faq-q .chev{transition:none}}

/* ---------- Responsive ---------- */
@media (max-width:820px){
  .nav-links{display:none!important}
  .lia-navbar .btn-primary{padding:10px 16px;font-size:13.5px} /* compact CTA so wordmark holds its own */
  .lia-brand .wm{font-size:18px}
  .nav-burger{display:inline-flex!important}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px 20px}
}
@media (max-width:760px){.faq-grid{grid-template-columns:1fr;gap:8px}}
@media (max-width:440px){.footer-grid{grid-template-columns:1fr}}