/* ============================================================================
   BeamClaw — site-v2 · "Photonic Command Deck"
   Cinematic / futuristic LiFi aesthetic.
   Display: Chakra Petch · Body: Space Grotesk · Mono: JetBrains Mono
   One luminous teal accent (#37e0c4) + sparing gold (#ffb454) on near-black.
   No purple. Mixed HUD edges + selective radii. Editorial/asymmetric.
   ALL element IDs from app.js / flash.js are preserved verbatim.
============================================================================ */
@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@500;600;700&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root{
  /* canvas — near-black with cool depth */
  --bg:#06080c; --bg2:#080b12; --bg3:#0a0e18;
  --void:#04060a;
  --panel:rgba(13,20,32,.55); --panel2:rgba(16,24,38,.72); --panel-solid:#0c1320;
  --glass:rgba(20,30,46,.42);
  --line:#18283e; --line2:#22364f; --line3:#2c4564;
  --hair:rgba(120,170,210,.10);

  --txt:#eaf3fb; --dim:#90a6c0; --faint:#5d7493; --ghost:#3a4f6b;

  /* one luminous accent + sparing gold */
  --teal:#37e0c4; --teal-d:#13a48b; --teal-deep:#0c7a67;
  --teal-glow:rgba(55,224,196,.55);
  --gold:#ffb454; --gold-d:#e8932f;
  --bad:#ff5d6c; --good:#37e0c4;
  --sky:#56c7ff; /* secondary cool only for faint depth glows, never as a UI accent */

  --disp:'Chakra Petch',sans-serif;
  --body:'Space Grotesk',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;

  --r:16px; --r-sm:10px; --r-xs:6px;
  --maxw:1180px; --readw:780px;
  --s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:72px;--s9:104px;

  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow:0 28px 70px -38px #000, 0 2px 0 rgba(120,170,210,.04) inset;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--void);color:var(--txt);
  font-family:var(--body);line-height:1.6;font-size:16px;
  overflow-x:hidden;position:relative;
  text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;
}
/* ---- layered space canvas: radial glows + technical grid + scanlines ---- */
.bg-deck{position:fixed;inset:0;z-index:-3;pointer-events:none;background:
  radial-gradient(1100px 680px at 78% -12%, rgba(55,224,196,.10), transparent 60%),
  radial-gradient(900px 620px at 8% 4%, rgba(86,199,255,.06), transparent 62%),
  radial-gradient(700px 700px at 50% 120%, rgba(255,180,84,.045), transparent 60%),
  linear-gradient(180deg,#06080c 0%,#05070b 45%,#04060a 100%);
}
.bg-grid{position:fixed;inset:0;z-index:-2;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(86,150,200,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(86,150,200,.045) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%, #000 55%, transparent 100%);
          mask-image:radial-gradient(120% 90% at 50% 0%, #000 55%, transparent 100%);
}
.bg-scan{position:fixed;inset:0;z-index:-2;pointer-events:none;opacity:.5;
  background:repeating-linear-gradient(0deg, rgba(255,255,255,.012) 0 1px, transparent 1px 3px);
  mix-blend-mode:screen;
}
#photons{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.9}

a{color:var(--teal);text-decoration:none;transition:color .18s}
a:hover{color:#7df0dc}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
img{max-width:100%;display:block}
::selection{background:rgba(55,224,196,.28);color:#eafff9}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono)}
.dim{color:var(--dim)} .faint{color:var(--faint)}
.center{text-align:center}
.hide{display:none!important}
.g{color:var(--teal)}
.gold{color:var(--gold)}

/* small reusable HUD bits */
.hud-corners{position:relative}
.hud-corners::before,.hud-corners::after{content:'';position:absolute;width:12px;height:12px;pointer-events:none;opacity:.55}
.hud-corners::before{left:-1px;top:-1px;border-left:1px solid var(--teal);border-top:1px solid var(--teal)}
.hud-corners::after{right:-1px;bottom:-1px;border-right:1px solid var(--teal);border-bottom:1px solid var(--teal)}

/* ============================ NAV ============================ */
.nav{position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(6,8,12,.92),rgba(6,8,12,.7));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:20px;height:64px}
.brand{font-family:var(--disp);font-weight:700;font-size:20px;letter-spacing:1.5px;color:var(--txt);
  display:inline-flex;align-items:center;gap:9px;position:relative}
.brand b{color:var(--teal);text-shadow:0 0 18px rgba(55,224,196,.5)}
.brand .dotled{width:7px;height:7px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 10px var(--teal);animation:pulse 2.4s ease-in-out infinite}
.nav .links{display:flex;gap:6px;margin-left:6px}
.nav .links a{color:var(--dim);font-size:14px;font-weight:500;letter-spacing:.3px;
  padding:8px 13px;border-radius:8px;position:relative;transition:.18s}
.nav .links a:hover{color:var(--txt);background:rgba(255,255,255,.03)}
.nav .links a.active{color:var(--txt)}
.nav .links a.active::after{content:'';position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:linear-gradient(90deg,var(--teal),transparent);border-radius:2px}
.nav .sp{flex:1}
.navtoggle{display:none;background:rgba(255,255,255,.02);border:1px solid var(--line2);
  border-radius:9px;color:var(--txt);padding:9px 12px;cursor:pointer;font-size:16px;line-height:1}

/* ============================ BUTTONS ============================ */
.btn{display:inline-flex;align-items:center;gap:9px;justify-content:center;
  border:1px solid var(--line2);background:rgba(255,255,255,.02);color:var(--txt);
  border-radius:10px;padding:13px 22px;font-family:var(--disp);font-size:14.5px;font-weight:600;
  letter-spacing:.5px;cursor:pointer;transition:.22s var(--ease);min-height:46px;line-height:1;
  position:relative;overflow:hidden}
.btn::after{content:'';position:absolute;inset:0;background:
  linear-gradient(110deg,transparent 30%,rgba(255,255,255,.14) 50%,transparent 70%);
  transform:translateX(-120%);transition:transform .55s var(--ease)}
.btn:hover::after{transform:translateX(120%)}
.btn:hover{border-color:var(--teal);color:#fff;transform:translateY(-2px);
  box-shadow:0 14px 34px -16px var(--teal-glow)}
.btn.primary{background:linear-gradient(160deg,#2ee0c2,#11a288);border-color:#33e3c6;color:#042019;
  box-shadow:0 10px 30px -14px var(--teal-glow), inset 0 1px 0 rgba(255,255,255,.3)}
.btn.primary:hover{box-shadow:0 16px 40px -14px var(--teal-glow), inset 0 1px 0 rgba(255,255,255,.35)}
.btn.gold{background:linear-gradient(160deg,#ffc678,#e8932f);border-color:#ffc678;color:#241400;
  box-shadow:0 10px 30px -14px rgba(255,180,84,.5), inset 0 1px 0 rgba(255,255,255,.3)}
.btn.ghost{background:transparent;border-color:var(--line2)}
.btn.ghost:hover{background:rgba(55,224,196,.04)}
.btn.sm{padding:9px 15px;font-size:13px;min-height:38px;border-radius:9px}
.btn.lg{padding:16px 28px;font-size:15.5px;border-radius:12px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn:disabled::after{display:none}

/* ============================ PANELS / GLASS ============================ */
.panel{background:var(--panel);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);
  position:relative;transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease)}
.panel::before{content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(180deg,rgba(120,170,210,.06),transparent 40%)}
.panel.lift:hover{transform:translateY(-4px);border-color:var(--line3);
  box-shadow:0 36px 80px -42px #000, 0 0 0 1px rgba(55,224,196,.1)}

.tag{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11.5px;
  color:var(--dim);border:1px solid var(--line2);border-radius:7px;padding:5px 11px;letter-spacing:.4px}
.tag::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--faint)}
.tag.ok{color:var(--teal);border-color:rgba(55,224,196,.35)}
.tag.ok::before{background:var(--teal);box-shadow:0 0 8px var(--teal)}
.tag.gold{color:var(--gold);border-color:rgba(255,180,84,.35)}
.tag.gold::before{background:var(--gold);box-shadow:0 0 8px var(--gold)}

/* ============================ SECTIONS / TYPE ============================ */
section{padding:var(--s9) 0;border-top:1px solid var(--line);position:relative}
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:3px;text-transform:uppercase;
  color:var(--teal);display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:'';width:26px;height:1px;background:linear-gradient(90deg,var(--teal),transparent)}
h1,h2,h3,h4{font-family:var(--disp);letter-spacing:-.2px;line-height:1.1;margin:0;font-weight:700}
.h-sec{font-size:clamp(26px,4vw,40px);font-weight:700;margin:16px 0 8px;letter-spacing:-.5px}
.lead{color:var(--dim);font-size:clamp(15px,1.5vw,18px);max-width:640px;line-height:1.7}
.kicker{color:var(--faint);font-size:13px;font-family:var(--mono);letter-spacing:.5px}
.sec-head{max-width:720px;margin-bottom:var(--s7)}

/* section coordinate label (HUD detail) */
.sec-coord{position:absolute;top:28px;right:24px;font-family:var(--mono);font-size:11px;
  color:var(--ghost);letter-spacing:1px;pointer-events:none}

/* ============================ HERO ============================ */
.hero{position:relative;overflow:hidden;padding:clamp(56px,9vw,108px) 0 clamp(40px,6vw,80px);
  border-top:0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,64px);align-items:center}
.hero-copy{position:relative;z-index:2}
.hero .eyebrow{margin-bottom:22px}
.hero h1{font-size:clamp(38px,6vw,72px);font-weight:700;letter-spacing:-1.5px;line-height:1.02;
  position:relative}
.hero h1 .beam-word{position:relative;display:inline-block;
  background:linear-gradient(92deg,var(--teal) 0%,#8df3e2 45%,var(--teal) 100%);
  background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:sweep 5.5s var(--ease) infinite}
@keyframes sweep{0%,100%{background-position:140% 0}50%{background-position:-40% 0}}
.hero .lead{margin:26px 0 32px;font-size:clamp(15px,1.6vw,18.5px);max-width:560px}
.hero .lead b{color:var(--txt);font-weight:600}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero .pills{margin-top:30px;display:flex;gap:9px;flex-wrap:wrap}
.hero-readout{margin-top:30px;display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);
  font-size:12px;color:var(--faint);letter-spacing:.5px}
.hero-readout b{color:var(--teal);font-weight:500}

/* ---- signature hero BEAM: screen → photons → chip ---- */
.beam-stage{position:relative;height:clamp(320px,42vw,460px);z-index:1}
.beam-stage .ring{position:absolute;inset:0;margin:auto;width:min(420px,86%);aspect-ratio:1;
  border-radius:50%;border:1px solid rgba(55,224,196,.12);
  box-shadow:0 0 80px -20px rgba(55,224,196,.3) inset}
.beam-stage .ring.r2{width:min(300px,62%);border-color:rgba(55,224,196,.18);
  animation:spin 38s linear infinite}
.beam-stage .ring.r3{width:min(190px,40%);border-style:dashed;border-color:rgba(86,199,255,.16);
  animation:spin 24s linear infinite reverse}
@keyframes spin{to{transform:rotate(360deg)}}

.beam-line{position:absolute;left:13%;right:13%;top:50%;height:2px;transform:translateY(-50%);
  background:linear-gradient(90deg,transparent,rgba(55,224,196,.15) 12%,var(--teal) 50%,rgba(55,224,196,.15) 88%,transparent);
  border-radius:2px;filter:drop-shadow(0 0 6px rgba(55,224,196,.6))}
.beam-line .surge{position:absolute;top:-1px;left:-10%;width:14%;height:4px;border-radius:4px;
  background:linear-gradient(90deg,transparent,#eafff9,transparent);
  filter:blur(.5px);animation:surge 2.4s var(--ease) infinite}
@keyframes surge{0%{left:-14%;opacity:0}10%{opacity:1}90%{opacity:1}100%{left:100%;opacity:0}}
/* photon dots travelling the beam */
.beam-line .ph{position:absolute;top:50%;width:5px;height:5px;border-radius:50%;background:#cffff5;
  transform:translateY(-50%);box-shadow:0 0 8px var(--teal);animation:flyx 2.6s linear infinite}
.beam-line .ph:nth-child(2){animation-delay:.5s}
.beam-line .ph:nth-child(3){animation-delay:1s;width:4px;height:4px}
.beam-line .ph:nth-child(4){animation-delay:1.5s}
.beam-line .ph:nth-child(5){animation-delay:2s;width:3px;height:3px;opacity:.7}
@keyframes flyx{0%{left:0;opacity:0}8%{opacity:1}92%{opacity:1}100%{left:100%;opacity:0}}

/* emitter (screen) + receiver (chip) nodes */
.beam-node{position:absolute;top:50%;transform:translateY(-50%);z-index:2}
.beam-node.emit{left:2%}
.beam-node.recv{right:2%}
.node-box{width:84px;height:108px;border-radius:12px;border:1px solid var(--line3);
  background:linear-gradient(160deg,rgba(16,24,38,.9),rgba(10,15,24,.95));
  box-shadow:0 18px 40px -22px #000, inset 0 1px 0 rgba(120,170,210,.08);
  position:relative;backdrop-filter:blur(8px)}
.node-box.chip{width:78px;height:78px;border-radius:14px}
.node-box .scr{position:absolute;inset:9px;border-radius:7px;overflow:hidden;
  background:#04070d;border:1px solid var(--line)}
.node-box .scr::before{content:'';position:absolute;inset:0;
  background:repeating-linear-gradient(0deg,rgba(55,224,196,.0) 0 2px,rgba(55,224,196,.5) 2px 3px);
  animation:scrflick 1.4s steps(8) infinite;opacity:.5}
@keyframes scrflick{0%{opacity:.12;transform:translateY(0)}50%{opacity:.55}100%{opacity:.12;transform:translateY(-3px)}}
.node-box.chip .core{position:absolute;inset:0;margin:auto;width:14px;height:14px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 18px var(--gold),0 0 36px rgba(255,180,84,.4);
  animation:pulse 2s ease-in-out infinite}
.node-box.chip .pins{position:absolute;inset:0;border-radius:14px;
  background:
    linear-gradient(90deg,var(--line3) 1px,transparent 1px) 0 0/12px 100%,
    linear-gradient(0deg,var(--line3) 1px,transparent 1px) 0 0/100% 12px;
  opacity:.25;-webkit-mask:radial-gradient(closest-side,transparent 58%,#000 60%);
          mask:radial-gradient(closest-side,transparent 58%,#000 60%)}
.node-label{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%);
  font-family:var(--mono);font-size:10.5px;color:var(--faint);white-space:nowrap;letter-spacing:.5px}
.node-label b{color:var(--teal);font-weight:500}

@keyframes pulse{0%,100%{transform:scale(1);opacity:.85}50%{transform:scale(1.25);opacity:1}}

/* floating depth chips around the beam */
.float-chip{position:absolute;font-family:var(--mono);font-size:11px;color:var(--dim);
  background:rgba(10,16,26,.7);border:1px solid var(--line2);border-radius:8px;padding:7px 11px;
  backdrop-filter:blur(10px);box-shadow:0 12px 30px -18px #000;z-index:3;white-space:nowrap}
.float-chip .v{color:var(--teal)}
.float-chip.f1{left:-2%;top:10%;animation:bob 6s ease-in-out infinite}
.float-chip.f2{right:-3%;top:18%;animation:bob 7s ease-in-out infinite .8s}
.float-chip.f3{right:4%;bottom:8%;animation:bob 5.5s ease-in-out infinite .4s}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* ============================ STAT CARDS (floating, asymmetric) ============================ */
.statband{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{padding:22px 22px 20px;position:relative;overflow:hidden}
.stat::after{content:'';position:absolute;right:-30px;top:-30px;width:90px;height:90px;border-radius:50%;
  background:radial-gradient(circle,rgba(55,224,196,.12),transparent 70%)}
.stat .v{font-family:var(--mono);font-size:clamp(26px,3.4vw,38px);color:var(--teal);font-weight:700;
  letter-spacing:-1px;line-height:1;text-shadow:0 0 24px rgba(55,224,196,.25)}
.stat .l{font-size:12px;color:var(--dim);text-transform:uppercase;letter-spacing:1.2px;margin-top:10px}
.stat .tick{position:absolute;left:0;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--teal),transparent)}
.stat.gold .v{color:var(--gold);text-shadow:0 0 24px rgba(255,180,84,.25)}
.stat.gold .tick{background:linear-gradient(180deg,var(--gold),transparent)}

/* ============================ GRIDS / FEATURES ============================ */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}

.feat{padding:26px}
.feat .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:22px;
  background:linear-gradient(160deg,rgba(55,224,196,.14),rgba(55,224,196,.03));
  border:1px solid rgba(55,224,196,.22);box-shadow:0 0 24px -10px var(--teal-glow)}
.feat h4{font-family:var(--disp);font-size:18px;margin:16px 0 8px;letter-spacing:0}
.feat p{margin:0;color:var(--dim);font-size:14.5px;line-height:1.65}

/* numbered steps (asymmetric: big mono index) */
.steps{counter-reset:s}
.step{padding:26px;position:relative;overflow:hidden}
.step .n{font-family:var(--mono);color:var(--teal);font-size:12.5px;letter-spacing:1px;
  display:inline-flex;align-items:center;gap:8px}
.step .n::before{content:'';width:18px;height:1px;background:var(--teal)}
.step h4{font-family:var(--disp);font-size:19px;margin:14px 0 8px}
.step p{margin:0;color:var(--dim);font-size:14.5px;line-height:1.65}
.step .ghost-num{position:absolute;right:14px;top:2px;font-family:var(--disp);font-weight:700;
  font-size:78px;color:rgba(120,170,210,.05);line-height:1;pointer-events:none;letter-spacing:-3px}

/* ============================ COMPARISON TABLE ============================ */
.cmp-wrap{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--panel);
  backdrop-filter:blur(14px)}
.cmp{width:100%;border-collapse:collapse;font-size:14px}
.cmp th,.cmp td{border-bottom:1px solid var(--line);padding:14px 16px;text-align:left}
.cmp tr:last-child td{border-bottom:0}
.cmp th{font-family:var(--mono);font-size:11.5px;color:var(--dim);font-weight:500;
  background:rgba(255,255,255,.015);text-transform:uppercase;letter-spacing:1px}
.cmp th:nth-child(2){color:var(--teal)}
.cmp td:first-child{color:var(--dim);font-weight:500}
.cmp td:nth-child(2){background:rgba(55,224,196,.04)}
.cmp .yes{color:var(--teal);font-weight:600}
.cmp .no{color:var(--bad)}
.cmp tr:hover td{background:rgba(55,224,196,.04)}
.cmp tr:hover td:nth-child(2){background:rgba(55,224,196,.08)}

/* ============================ FAQ accordion ============================ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:var(--readw)}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden;
  transition:border-color .25s}
.faq-item[open]{border-color:var(--line3)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;
  gap:14px;font-family:var(--disp);font-size:16.5px;font-weight:600;color:var(--txt)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .qx{margin-left:auto;color:var(--teal);font-family:var(--mono);font-size:18px;
  transition:transform .25s var(--ease);flex:none}
.faq-item[open] summary .qx{transform:rotate(45deg)}
.faq-item summary .qn{font-family:var(--mono);font-size:12px;color:var(--faint)}
.faq-body{padding:0 22px 20px 22px;color:var(--dim);font-size:14.5px;line-height:1.7}
.faq-body i{color:var(--txt)}

/* ============================ CONSOLE (app.html) ============================ */
.console{max-width:820px;margin:0 auto;overflow:hidden}
.console .top{display:flex;align-items:center;gap:11px;padding:14px 18px;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.015);
  border-radius:var(--r) var(--r) 0 0}
.console .top .ttl{font-family:var(--disp);font-weight:700;letter-spacing:.5px}
.console .top .ttl b{color:var(--teal)}
.console .top .ses{font-family:var(--mono);font-size:11px;color:var(--ghost);letter-spacing:.5px}
.dot{width:9px;height:9px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 12px var(--teal);animation:pulse 2.2s ease-in-out infinite;flex:none}
#chat{height:min(48vh,400px);overflow:auto;padding:18px;display:flex;flex-direction:column;gap:11px;
  scrollbar-width:thin;scrollbar-color:var(--line2) transparent}
#chat::-webkit-scrollbar{width:8px}#chat::-webkit-scrollbar-thumb{background:var(--line2);border-radius:8px}
.msg{max-width:88%;padding:12px 15px;border-radius:13px;font-size:14.5px;white-space:pre-wrap;
  line-height:1.6;animation:rise .28s var(--ease)}
.msg.you{align-self:flex-end;background:linear-gradient(160deg,#123043,#0d2536);
  border:1px solid #1d3f5c;color:#dceefb;border-bottom-right-radius:4px}
.msg.bot{align-self:flex-start;background:var(--panel-solid);border:1px solid var(--line2);
  border-bottom-left-radius:4px}
.msg.bot b{color:var(--teal)}
.msg .dev{display:none;margin-top:10px;font-family:var(--mono);font-size:11px;color:var(--dim);
  background:#04070d;border:1px solid var(--line);border-radius:8px;padding:11px;white-space:pre-wrap;
  line-height:1.55}
.show-dev .msg .dev{display:block}
@keyframes rise{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
.chips{padding:0 18px 14px;display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:13px;color:var(--dim);border:1px dashed var(--line2);border-radius:8px;
  padding:8px 14px;cursor:pointer;transition:.16s;font-family:var(--mono)}
.chip:hover{border-color:var(--teal);border-style:solid;color:var(--txt);
  background:rgba(55,224,196,.05)}
.inbar{display:flex;gap:11px;padding:14px 18px;border-top:1px solid var(--line);
  background:rgba(255,255,255,.015)}
.inbar input{flex:1;background:var(--void);border:1px solid var(--line2);color:var(--txt);
  border-radius:10px;padding:14px 18px;font-family:var(--body);font-size:15px;transition:.18s}
.inbar input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(55,224,196,.12)}
.settings{display:none;padding:18px;border-top:1px solid var(--line);background:rgba(4,7,13,.4)}
.settings.on{display:block}
.settings label{display:block;font-size:12px;color:var(--dim);margin:12px 0 5px;letter-spacing:.3px}
.settings input{width:100%;background:var(--void);border:1px solid var(--line2);color:var(--txt);
  border-radius:var(--r-sm);padding:11px 13px;font-family:var(--mono);font-size:13px}
.settings input:focus{outline:none;border-color:var(--teal)}
.settings a{color:var(--teal)}

/* ---- beam zone (in-page, before fullscreen) ---- */
.beamzone{display:none;padding:18px;border-top:1px solid var(--line);background:rgba(4,7,13,.35)}
.beamzone.on{display:block}
.beamzone .bz-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;
  font-family:var(--mono);font-size:11.5px;color:var(--faint);letter-spacing:1px;text-transform:uppercase}
.beamzone .bz-head .pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 10px var(--teal);animation:pulse 1.6s ease-in-out infinite}
.stage{display:flex;flex-direction:column;position:relative}

/* The flashing TARGET — pure black/white, NOTHING on it during a beam */
#pad{height:148px;border-radius:14px;background:#000;display:flex;align-items:center;
  justify-content:center;color:#2a3e54;font-family:var(--mono);font-size:12px;cursor:pointer;
  transition:background .005s linear;border:1px solid var(--line2);text-align:center;padding:0 12px;
  position:relative}
#pad::before,#pad::after{content:'';position:absolute;width:14px;height:14px;border-color:var(--ghost);
  opacity:.6;transition:opacity .2s}
#pad::before{left:8px;top:8px;border-left:1px solid;border-top:1px solid}
#pad::after{right:8px;bottom:8px;border-right:1px solid;border-bottom:1px solid}

/* Fullscreen UPLOAD STAGE:
   pure-black surround, big flashing TARGET centered (untouched),
   ALL LiFi chrome pinned dim & FAR below the target — never reaches the sensor. */
.stage:fullscreen,.stage:-webkit-full-screen{background:#000;justify-content:center;
  align-items:center;gap:0;padding:0}
.stage:fullscreen #pad,.stage:-webkit-full-screen #pad{height:60vmin;width:60vmin;max-width:60vh;
  border-radius:22px;border:0;font-size:0;color:transparent}
.stage:fullscreen #pad::before,.stage:fullscreen #pad::after,
.stage:-webkit-full-screen #pad::before,.stage:-webkit-full-screen #pad::after{display:none}
/* legacy chrome holder (kept; app.js writes #pb/#bstat) — hidden in fullscreen, the LiFi HUD takes over */
.stage:fullscreen .stagechrome,.stage:-webkit-full-screen .stagechrome{display:none}

/* in-page progress + status (also used in fullscreen via mirror) */
.stagechrome{margin-top:14px}
.prog{height:6px;background:var(--void);border-radius:999px;overflow:hidden;margin-top:14px;
  border:1px solid var(--line)}
.prog>i{display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--teal-deep),var(--teal));transition:width .05s;
  box-shadow:0 0 12px var(--teal-glow)}
.bstat{font-family:var(--mono);font-size:12.5px;color:var(--dim);margin-top:11px;text-align:center;
  min-height:16px;letter-spacing:.3px}
@keyframes bpulse{0%,100%{opacity:.6}50%{opacity:1}}
.beamzone.uploading .bstat{color:var(--teal);animation:bpulse 1.2s ease-in-out infinite}
.beamzone.uploading .prog{box-shadow:0 0 0 1px rgba(55,224,196,.25)}
.beamzone.uploading #pad{cursor:default}

.bz-controls{display:flex;gap:11px;justify-content:center;margin-top:16px}
#confirm{display:none;margin-top:16px;text-align:center;border-top:1px solid var(--line);padding-top:16px}

/* ====================================================================
   LiFi UPLOAD HUD — lives INSIDE .stage so it renders in fullscreen.
   Hidden normally; only shows when fullscreen + .uploading.
   Pinned to the very bottom, DIM + teal, far from the centered target.
   Pure visual; reads #bstat/#pb via fx.js (no beam-timing changes).
==================================================================== */
.lifi-hud{display:none}
.stage:fullscreen .lifi-hud,.stage:-webkit-full-screen .lifi-hud{
  display:block;position:fixed;left:0;right:0;bottom:0;
  padding:0 4vw calc(2.4vh + env(safe-area-inset-bottom,0px));
  width:min(720px,92vw);margin:0 auto;
  opacity:0;transition:opacity .5s ease;pointer-events:none;z-index:5;
  /* keep it visually separate & dim from the bright target above */
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 22%);
          mask-image:linear-gradient(180deg,transparent,#000 22%)}
/* visible when stage is fullscreen AND fx.js has flagged an active upload */
.stage:fullscreen .lifi-hud.lifi-active,
.stage:-webkit-full-screen .lifi-hud.lifi-active,
.beamzone.uploading .stage:fullscreen .lifi-hud{opacity:.62}
/* extra safety: never let HUD glow near center — it sits below 78% height only */
.lifi-hud .hud-inner{padding-top:6vh}

.lifi-quote{font-family:var(--mono);font-size:clamp(12px,2.4vw,15px);color:var(--teal);
  text-align:center;letter-spacing:.6px;min-height:1.4em;
  text-shadow:0 0 16px rgba(55,224,196,.4);animation:bpulse 1.5s ease-in-out infinite}
.lifi-quote .q-leave{opacity:0;transform:translateY(-4px)}

/* photon-flow line */
.lifi-flow{position:relative;height:2px;margin:16px 0 14px;border-radius:2px;
  background:linear-gradient(90deg,transparent,rgba(55,224,196,.25),rgba(55,224,196,.25),transparent);
  overflow:hidden}
.lifi-flow .fph{position:absolute;top:50%;width:4px;height:4px;border-radius:50%;background:#bffff2;
  transform:translateY(-50%);box-shadow:0 0 7px var(--teal);animation:flyx 1.8s linear infinite}
.lifi-flow .fph:nth-child(2){animation-delay:.45s}
.lifi-flow .fph:nth-child(3){animation-delay:.9s}
.lifi-flow .fph:nth-child(4){animation-delay:1.35s}

/* transmission-plan segments: PREAMBLE → SYNC → LEN → DATA → CRC */
.lifi-plan{display:flex;gap:6px;align-items:stretch}
.tx-seg{flex:1;position:relative;border:1px solid rgba(55,224,196,.2);border-radius:6px;
  padding:7px 4px 16px;text-align:center;overflow:hidden;background:rgba(55,224,196,.03);min-width:0}
.tx-seg.data{flex:2.4}
.tx-seg .fill{position:absolute;left:0;top:0;bottom:0;width:0%;
  background:linear-gradient(90deg,rgba(55,224,196,.12),rgba(55,224,196,.3));
  transition:width .15s linear}
.tx-seg .lbl{position:relative;font-family:var(--mono);font-size:9.5px;letter-spacing:.8px;
  color:var(--dim);text-transform:uppercase}
.tx-seg .sub{position:absolute;left:0;right:0;bottom:4px;font-family:var(--mono);font-size:8px;
  color:var(--faint);letter-spacing:.5px}
.tx-seg.active{border-color:rgba(55,224,196,.6);box-shadow:0 0 14px -4px var(--teal-glow)}
.tx-seg.active .lbl{color:var(--teal)}
.tx-seg.done .fill{width:100%}
.tx-seg.done .lbl{color:var(--teal)}

.lifi-meta{display:flex;justify-content:space-between;align-items:center;margin-top:12px;
  font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.6px}
.lifi-meta .pct{color:var(--teal);font-size:13px;font-weight:500}
.lifi-meta .pass b{color:var(--teal)}

/* ============================ FLASH (flash.html) ============================ */
.flashcard{max-width:720px;margin:0 auto}
.flash-hero{display:grid;grid-template-columns:1fr;gap:0}
.bay-frame{position:relative;border:1px solid var(--line2);border-radius:var(--r);overflow:hidden;
  background:linear-gradient(180deg,rgba(13,20,32,.6),rgba(8,12,20,.7));backdrop-filter:blur(16px)}
.bay-frame .bay-rail{position:absolute;top:0;left:0;right:0;height:34px;
  background:repeating-linear-gradient(90deg,rgba(255,180,84,.12) 0 14px,transparent 14px 28px);
  opacity:.5;-webkit-mask:linear-gradient(180deg,#000,transparent);mask:linear-gradient(180deg,#000,transparent)}
.log{font-family:var(--mono);font-size:12px;line-height:1.65;background:#04070d;border:1px solid var(--line);
  border-radius:var(--r-sm);padding:13px;height:190px;overflow:auto;white-space:pre-wrap;margin-top:14px;
  scrollbar-width:thin;scrollbar-color:var(--line2) transparent}
.log .ok{color:var(--teal)}.log .err{color:var(--bad)}.log .d{color:var(--faint)}
ol.steps2{padding-left:22px}ol.steps2 li{margin:9px 0;color:var(--dim)}
ol.steps2 b{color:var(--txt)}
code{font-family:var(--mono);background:#04070d;border:1px solid var(--line);border-radius:5px;
  padding:1px 7px;font-size:.9em;color:var(--teal)}

/* ============================ DOCS (docs.html) ============================ */
.doc{max-width:var(--readw)}
.doc h3{font-family:var(--disp);font-size:clamp(20px,2.6vw,26px);margin-top:48px;
  display:flex;align-items:center;gap:12px;letter-spacing:-.3px}
.doc h3::before{content:'';width:6px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,var(--teal),var(--teal-deep));flex:none;
  box-shadow:0 0 14px -3px var(--teal-glow)}
.doc p{color:var(--dim);font-size:15px;line-height:1.75}
.doc p b{color:var(--txt)}
.pipe-panel{padding:20px;margin-top:14px}
.pipe-panel pre{margin:0;white-space:pre-wrap;color:var(--dim);font-size:13px;line-height:1.7;
  font-family:var(--mono)}
.pipe-panel pre .hl{color:var(--teal)}

/* ============================ FOOTER ============================ */
footer{border-top:1px solid var(--line);padding:var(--s8) 0 var(--s7);color:var(--dim);
  font-size:13.5px;position:relative}
footer .row{display:flex;gap:22px;flex-wrap:wrap;align-items:center}
footer .row a{color:var(--dim)}footer .row a:hover{color:var(--teal)}
footer .brand{font-size:18px}
footer .tagline{color:var(--faint);font-family:var(--mono);font-size:12px;letter-spacing:.5px}
footer .note{font-size:12px;color:var(--faint);margin-top:14px;line-height:1.7;max-width:760px}

/* ============================ SCROLL REVEAL ============================ */
/* Failsafe: if fx.js never runs (no .fx on <html>), show everything — never a blank page. */
html:not(.fx) .reveal{opacity:1;transform:none}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}

/* ============================ RESPONSIVE ============================ */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:8px}
  .beam-stage{height:clamp(300px,60vw,400px);margin-top:8px;order:2}
  .hero-copy{order:1}
  .statband{grid-template-columns:repeat(2,1fr)}
  .grid3{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .wrap{padding:0 18px}
  section{padding:var(--s8) 0}
  .nav .links{position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(6,8,12,.98);backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);padding:8px 18px;display:none}
  .nav .links.open{display:flex;animation:rise .25s var(--ease)}
  .nav .links a{padding:14px 4px;border-bottom:1px solid var(--line);font-size:16px;border-radius:0}
  .nav .links a.active::after{display:none}
  .navtoggle{display:inline-flex}
  .grid3,.grid2{grid-template-columns:1fr}
  .statband{grid-template-columns:1fr 1fr;gap:12px}
  .float-chip{display:none}
  .cmp{font-size:13px}.cmp th,.cmp td{padding:11px 12px}
  .sec-coord{display:none}
  .hero h1{font-size:clamp(34px,10vw,46px);letter-spacing:-1px}
  .beam-node .node-box{width:64px;height:84px}
  .node-box.chip{width:60px;height:60px}
}
@media(max-width:420px){
  .btn{padding:12px 16px}
  .btn.lg{padding:14px 18px}
  .statband{grid-template-columns:1fr}
  .hero .cta{flex-direction:column}.hero .cta .btn{width:100%}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;
ransform:none}
  .beam-line .surge,.beam-line .ph,.lifi-flow .fph{display:none}
}