/* ===========================================================
   lowearthorbit.cc — shared design system
   minimalist · LIQUID GLASS · blue + orange · high-tech
   =========================================================== */
:root{
  --bg-0:#070b16;
  --ink:#eef2fb;
  --muted:#a4b1cd;
  --muted-2:#74809f;

  --blue:#5aa6ff;
  --blue-2:#2f7fe6;
  --blue-deep:#1b4fae;
  --orange:#ff9d3c;
  --orange-2:#ff7a1a;
  --orange-soft:#ffc888;

  /* liquid glass tokens */
  --glass-bg:linear-gradient(150deg, rgba(255,255,255,.16), rgba(255,255,255,.04) 60%, rgba(120,170,255,.05));
  --glass-brd:rgba(255,255,255,.30);
  --glass-shadow:0 20px 60px rgba(2,6,18,.5), inset 0 1px 0 rgba(255,255,255,.55), inset 0 -18px 40px rgba(10,20,50,.25);

  --maxw:1120px;
  --ease:cubic-bezier(.22,.7,.2,1);
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-0);
  color:var(--ink);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;position:relative;min-height:100vh;
}
h1,h2,h3,h4{font-family:'Space Grotesk','Inter',sans-serif;letter-spacing:-.02em;line-height:1.08}
a{color:inherit}
.mono{font-family:var(--mono)}

/* ---------- ambient background: vivid orbs so glass has something to refract ---------- */
.bg-orb{position:fixed;border-radius:50%;filter:blur(80px);z-index:-3;pointer-events:none}
.bg-orb.blue{width:60vw;height:60vw;left:-12vw;top:-16vw;opacity:.85;
  background:radial-gradient(circle,var(--blue) 0%,var(--blue-deep) 42%,transparent 70%);
  animation:drift1 26s var(--ease) infinite alternate}
.bg-orb.orange{width:52vw;height:52vw;right:-14vw;bottom:-14vw;opacity:.7;
  background:radial-gradient(circle,var(--orange) 0%,#a8500a 44%,transparent 72%);
  animation:drift2 32s var(--ease) infinite alternate}
.bg-orb.blue2{width:40vw;height:40vw;right:6vw;top:34vh;opacity:.5;
  background:radial-gradient(circle,#7bd0ff 0%,transparent 66%);
  animation:drift3 38s var(--ease) infinite alternate}
@keyframes drift1{to{transform:translate(9vw,11vh) scale(1.12)}}
@keyframes drift2{to{transform:translate(-8vw,-9vh) scale(1.1)}}
@keyframes drift3{to{transform:translate(-7vw,7vh) scale(1.18)}}
.bg-grid{position:fixed;inset:0;z-index:-2;pointer-events:none;opacity:.4;
  background:
    linear-gradient(transparent 0,transparent calc(100% - 1px),rgba(150,190,255,.07) 100%),
    linear-gradient(90deg,transparent 0,transparent calc(100% - 1px),rgba(150,190,255,.07) 100%);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(130% 100% at 50% 0%,#000 35%,transparent 85%);
  mask-image:radial-gradient(130% 100% at 50% 0%,#000 35%,transparent 85%);}
.bg-veil{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,11,22,.35),rgba(7,11,22,.62))}

/* ---------- liquid glass primitive ---------- */
.glass{position:relative;
  background:var(--glass-bg);
  backdrop-filter:blur(26px) saturate(190%) brightness(1.08);
  -webkit-backdrop-filter:blur(26px) saturate(190%) brightness(1.08);
  border:1px solid var(--glass-brd);border-radius:24px;box-shadow:var(--glass-shadow);
  overflow:hidden;isolation:isolate;
  transition:transform .4s var(--ease),border-color .4s var(--ease),box-shadow .4s var(--ease)}
/* specular sheen sweeping the top-left */
.glass::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:0;
  background:
    linear-gradient(135deg,rgba(255,255,255,.55) 0%,rgba(255,255,255,.05) 22%,transparent 42%),
    radial-gradient(120% 60% at 100% 0%,rgba(120,170,255,.18),transparent 55%);
  mix-blend-mode:screen;opacity:.7}
/* cursor-follow glare */
.glass::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:0;
  background:radial-gradient(260px circle at var(--mx,50%) var(--my,0%),rgba(255,255,255,.28),transparent 60%);
  opacity:0;transition:opacity .4s var(--ease)}
.glass:hover{transform:translateY(-5px);border-color:rgba(255,255,255,.5);
  box-shadow:0 30px 80px rgba(2,6,18,.6),inset 0 1px 0 rgba(255,255,255,.7),0 0 0 1px rgba(140,180,255,.18)}
.glass:hover::after{opacity:1}
.glass>*{position:relative;z-index:1}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
section{padding:64px 0;position:relative}
.tag{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;
  letter-spacing:1.5px;text-transform:uppercase;color:var(--blue);
  padding:7px 14px;border:1px solid rgba(120,170,255,.3);border-radius:999px;background:rgba(78,161,255,.08)}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--orange);box-shadow:0 0 8px var(--orange)}
.sec-head{margin-bottom:30px}
.sec-num{font-family:var(--mono);font-size:13px;color:var(--orange);letter-spacing:2px}
.sec-title{font-size:clamp(30px,5vw,46px);font-weight:600;margin-top:8px}
.sec-sub{color:var(--muted);margin-top:10px;max-width:560px}

/* ---------- nav ---------- */
nav{position:sticky;top:14px;z-index:60;margin:14px auto 0;max-width:var(--maxw);
  width:calc(100% - 28px);display:flex;align-items:center;justify-content:space-between;
  padding:10px 14px 10px 18px;border-radius:18px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink);font-weight:600;font-size:16px;font-family:'Space Grotesk',sans-serif}
.brand .orb-dot{width:22px;height:22px;border-radius:50%;
  background:radial-gradient(circle at 34% 34%,#fff,var(--orange) 55%,var(--orange-2));
  box-shadow:0 0 14px rgba(255,150,50,.7)}
.brand .mono{color:var(--blue);font-size:11px;letter-spacing:2px}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{text-decoration:none;color:var(--muted);font-size:14px;font-weight:500;
  padding:8px 14px;border-radius:11px;transition:color .25s,background .25s}
.nav-links a:hover{color:var(--ink);background:rgba(255,255,255,.08)}
.nav-cta{color:#0a0a0a!important;background:linear-gradient(100deg,var(--orange),var(--orange-2));font-weight:600}
.nav-cta:hover{filter:brightness(1.08)}
@media(max-width:640px){.nav-links a:not(.nav-cta){display:none}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;text-decoration:none;font-weight:600;font-size:14.5px;
  padding:13px 22px;border-radius:13px;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s,border-color .2s}
.btn-primary{background:linear-gradient(100deg,var(--orange),var(--orange-2));color:#1a0e02;
  box-shadow:0 10px 30px rgba(255,140,40,.32)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 42px rgba(255,140,40,.46)}
.btn-blue{background:linear-gradient(100deg,var(--blue),var(--blue-2));color:#06122a;
  box-shadow:0 10px 30px rgba(60,130,246,.3)}
.btn-blue:hover{transform:translateY(-3px);box-shadow:0 16px 42px rgba(60,130,246,.45)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:var(--glass-brd);color:var(--ink);
  backdrop-filter:blur(8px)}
.btn-ghost:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.45);background:rgba(255,255,255,.14)}

/* ---------- status badge (e.g. "still working") ---------- */
.status{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11px;
  letter-spacing:1px;text-transform:uppercase;color:#ffd29a;background:rgba(255,170,60,.14);
  border:1px solid rgba(255,170,60,.4);padding:5px 12px;border-radius:999px}
.status .blink{width:7px;height:7px;border-radius:50%;background:#ffb04a;box-shadow:0 0 9px #ffb04a;
  animation:blink 1.5s ease-in-out infinite}
.status.live{color:#a7f3c7;background:rgba(60,220,140,.12);border-color:rgba(60,220,140,.38)}
.status.live .blink{background:#46e08a;box-shadow:0 0 9px #46e08a}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.2}}

/* ---------- hero ---------- */
header.hero{padding:84px 0 36px;text-align:center}
header.hero h1{font-size:clamp(50px,11vw,118px);font-weight:700;line-height:.92}
.hero .grad{background:linear-gradient(100deg,var(--blue) 0%,#cfe0ff 40%,var(--orange-soft) 72%,var(--orange) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .lead{margin:22px auto 0;max-width:520px;color:var(--muted);font-size:clamp(16px,2.2vw,19px)}
.hero .chips{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.chip{font-family:var(--mono);font-size:12.5px;color:var(--ink);padding:9px 16px;border-radius:999px}
.chip:nth-child(even){color:var(--orange-soft)}
.hero .cta{display:flex;gap:13px;justify-content:center;flex-wrap:wrap;margin-top:34px}

/* ---------- gallery: category structure ---------- */
.cat-nav{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}
.cat-nav a{font-family:var(--mono);font-size:12px;text-decoration:none;color:var(--muted);
  padding:8px 15px;border:1px solid var(--glass-brd);border-radius:999px;transition:.25s}
.cat-nav a:hover{color:var(--ink);border-color:var(--blue)!important;background:rgba(78,161,255,.1)}
.category{margin-top:46px}
.cat-label{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.cat-label h3{font-size:clamp(19px,2.6vw,24px);font-weight:600;white-space:nowrap}
.cat-label .ix{font-family:var(--mono);font-size:13px;color:var(--orange)}
.cat-label .rule{flex:1;height:1px;background:linear-gradient(90deg,rgba(150,190,255,.35),transparent)}

/* ---------- nathan feature: big photo + small video ---------- */
.nathan{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:stretch}
.nathan .photo{padding:6px}
.nathan .photo img{display:block;width:100%;height:100%;object-fit:cover;border-radius:18px;min-height:430px}
.nathan .panel{padding:30px;display:flex;flex-direction:column;justify-content:center}
.nathan .panel h3{font-size:clamp(26px,3.4vw,34px);font-weight:600}
.nathan .role{font-family:var(--mono);font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--orange);margin-top:6px}
.nathan .panel p{color:var(--muted);margin-top:14px;font-size:15px}
.nathan .specs{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.pill{font-family:var(--mono);font-size:11.5px;color:var(--muted);padding:5px 11px;border:1px solid var(--glass-brd);border-radius:999px}
.video-row{display:flex;align-items:center;gap:14px;margin-top:20px}
.video-mini{width:118px;flex:0 0 118px;border-radius:14px;overflow:hidden;border:1px solid var(--glass-brd);background:#06101f}
.video-mini video{display:block;width:100%;height:100%;object-fit:cover}
.video-cap{font-size:13px;color:var(--muted)}
.video-cap b{display:block;color:var(--ink);font-family:var(--mono);font-size:11px;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:3px}
.acts{display:flex;gap:11px;flex-wrap:wrap;margin-top:24px}
@media(max-width:780px){.nathan{grid-template-columns:1fr}.nathan .photo img{min-height:0;aspect-ratio:3/4}}

/* ---------- generic project cards ---------- */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.card{padding:0;display:flex;flex-direction:column}
.card .thumb{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--glass-brd);position:relative}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.card:hover .thumb img{transform:scale(1.06)}
.card .body{padding:22px 24px 24px}
.card .row{display:flex;align-items:center;justify-content:space-between;gap:10px}
.card .role{font-family:var(--mono);font-size:11.5px;letter-spacing:1.5px;text-transform:uppercase;color:var(--blue)}
.card h3{font-size:21px;font-weight:600;margin-top:7px}
.card p{color:var(--muted);font-size:14.5px;margin-top:10px}
.card .acts{margin-top:18px}
.tex-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}
.tex-grid img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:9px;border:1px solid var(--glass-brd)}
.note{font-family:var(--mono);font-size:11.5px;color:var(--muted-2);margin-top:16px}
/* mascot card: sprite glowing on glass */
.mascot{display:grid;place-items:center;aspect-ratio:16/10;position:relative;overflow:hidden;border-bottom:1px solid var(--glass-brd)}
.mascot::before{content:"";position:absolute;width:70%;height:120%;border-radius:50%;
  background:radial-gradient(circle,rgba(255,160,70,.4),rgba(80,150,255,.25) 45%,transparent 70%);filter:blur(20px)}
.mascot img{position:relative;height:108%;object-fit:contain;transition:transform .6s var(--ease)}
.card:hover .mascot img{transform:translateY(-6px) scale(1.03)}
@media(max-width:780px){.cards{grid-template-columns:1fr}}

/* ---------- FPGA guide banner ---------- */
.guide-banner{padding:32px 34px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.guide-banner h3{font-size:clamp(22px,3vw,30px);font-weight:600}
.guide-banner p{color:var(--muted);margin-top:10px;max-width:560px;font-size:15px}
.guide-banner .circuit{font-family:var(--mono);font-size:12px;color:var(--blue);margin-top:14px;letter-spacing:1px}
@media(max-width:680px){.guide-banner{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{padding:60px 0 80px;text-align:center;border-top:1px solid rgba(255,255,255,.08);margin-top:50px}
footer .big{font-size:clamp(26px,5vw,40px);font-weight:600}
footer .links{display:flex;gap:20px;justify-content:center;margin-top:22px}
footer .links a{color:var(--blue);text-decoration:none;font-weight:600}
footer .links a:hover{color:var(--orange-soft)}
footer .fine{margin-top:26px;font-family:var(--mono);font-size:12px;color:var(--muted-2)}

/* ---------- article (fpga guide page) ---------- */
.article{max-width:760px;margin:0 auto;padding:36px 0 20px}
.article .glass{padding:32px 36px;margin-top:22px}
.article h2{font-size:clamp(24px,3.4vw,30px);font-weight:600;margin-top:6px}
.article h3{font-size:20px;font-weight:600;margin:26px 0 6px;color:var(--ink)}
.article h3 .n{font-family:var(--mono);color:var(--orange);font-size:14px;margin-right:8px}
.article p{color:#d2dbee;margin-top:12px}
.article ul{margin:12px 0 0 2px;padding-left:20px;color:#d2dbee}
.article li{margin-top:7px}
.article strong{color:#fff}
.article .lead{font-size:18px;color:var(--muted)}
.article code{font-family:var(--mono);font-size:13px;background:rgba(120,170,255,.14);
  border:1px solid rgba(120,170,255,.22);border-radius:6px;padding:2px 7px;color:#d6e7ff}
.article pre{margin-top:14px;background:rgba(4,8,16,.66);border:1px solid var(--glass-brd);border-radius:14px;
  padding:16px 18px;overflow-x:auto}
.article pre code{background:none;border:none;padding:0;color:#c7e3ff;font-size:13px;line-height:1.7}
.callout{margin-top:18px;border-left:3px solid var(--orange);background:rgba(255,160,60,.09);
  border-radius:0 12px 12px 0;padding:14px 18px;color:#ece1cd;font-size:14.5px}
.callout b{color:var(--orange-soft)}
.steps{counter-reset:s;list-style:none;padding:0;margin-top:14px}
.steps li{counter-increment:s;position:relative;padding:10px 0 10px 46px;border-top:1px solid rgba(255,255,255,.08);color:#d2dbee}
.steps li:first-child{border-top:none}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:10px;
  font-family:var(--mono);font-size:13px;color:#06122a;background:linear-gradient(100deg,var(--blue),var(--blue-2));
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-weight:700}
.steps li b{color:#fff}
.toc{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.toc a{font-family:var(--mono);font-size:12px;text-decoration:none;color:var(--muted);
  padding:6px 12px;border:1px solid var(--glass-brd);border-radius:999px;transition:.25s}
.toc a:hover{color:var(--ink);border-color:var(--blue);background:rgba(78,161,255,.08)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}