/* ============================================================
   Aevrium Biosystems — Clinical Precision design system
   ============================================================ */

:root {
  color-scheme: dark;

  /* Surfaces (ink ramp) */
  --ink-900:#050c16;
  --ink-800:#07111f;
  --ink-700:#0a1627;
  --ink-600:#0f2036;
  --panel:rgba(255,255,255,.05);
  --panel-2:rgba(255,255,255,.075);
  --panel-3:rgba(255,255,255,.10);
  --line:rgba(255,255,255,.12);
  --line-2:rgba(255,255,255,.22);

  /* Text */
  --text:#eef4fb;
  --muted:#aab9cc;
  --muted-2:#7f90a7;

  /* Semantic accents */
  --signal:#66c8ff;        /* selection / data signal */
  --signal-soft:#bfe9ff;
  --viability:#94e2b2;     /* bio / viability / proof */
  --viability-soft:#c8f2d8;
  --provenance:#d8b36a;    /* Fareban provenance ONLY */
  --provenance-soft:#f3d596;
  --danger:#ff9f8c;

  /* Geometry */
  --r-lg:26px; --r-md:18px; --r-sm:12px; --r-pill:999px;
  --max:1140px;
  --header:74px;
  --shadow:0 30px 80px rgba(0,0,0,.45);
  --shadow-sm:0 14px 34px rgba(0,0,0,.30);

  /* Type */
  --font-display:"Fraunces", Georgia, "Times New Roman", serif;
  --font-body:"Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:"JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
}

*, *::before, *::after { box-sizing:border-box; }
html { scroll-behavior:smooth; }

body {
  margin:0;
  min-width:320px;
  font-family:var(--font-body);
  color:var(--text);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  background:
    radial-gradient(900px 540px at 12% -4%, rgba(102,200,255,.16), transparent 60%),
    radial-gradient(760px 540px at 92% 2%, rgba(148,226,178,.10), transparent 58%),
    radial-gradient(900px 720px at 50% 120%, rgba(216,179,106,.07), transparent 60%),
    linear-gradient(180deg,#07111f 0%, #081525 46%, #050c16 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}

a { color:inherit; text-decoration:none; }
img, svg { max-width:100%; display:block; }
h1,h2,h3,h4 { margin:0; letter-spacing:-.02em; line-height:1.04; }
p { margin:0; color:var(--muted); overflow-wrap:break-word; }

::selection { background:rgba(102,200,255,.28); color:#fff; }

a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, .btn:focus-visible {
  outline:3px solid var(--signal);
  outline-offset:3px;
  border-radius:6px;
}

.serif { font-family:var(--font-display); font-optical-sizing:auto; }
.mono  { font-family:var(--font-mono); font-variant-numeric:tabular-nums; }

.container { width:min(calc(100% - 36px), var(--max)); margin-inline:auto; }
[id] { scroll-margin-top:calc(var(--header) + 26px); }

/* ---------- Skip link + scroll progress ---------- */
.skip-link {
  position:fixed; top:-100px; left:16px; z-index:1200;
  padding:11px 16px; border-radius:var(--r-pill);
  color:#06121f; background:#fff; font-weight:800; box-shadow:var(--shadow);
  transition:top .18s ease;
}
.skip-link:focus { top:16px; }

.scroll-progress {
  position:fixed; top:0; left:0; height:3px; width:0%;
  z-index:1100;
  background:linear-gradient(90deg, var(--signal), var(--viability));
  box-shadow:0 0 16px rgba(102,200,255,.6);
  transition:width .1s linear;
}

/* ---------- Top bar ---------- */
.topbar {
  position:sticky; top:0; z-index:60;
  min-height:var(--header);
  border-bottom:1px solid rgba(255,255,255,.07);
  background:rgba(7,17,31,.72);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
}
.topbar-inner { min-height:var(--header); display:flex; align-items:center; justify-content:space-between; gap:18px; }

.brand { display:inline-flex; align-items:center; gap:12px; min-width:0; border-radius:16px; }
.brand-mark {
  width:46px; height:46px; flex:none; display:grid; place-items:center;
  border:1px solid rgba(102,200,255,.30); border-radius:14px;
  background:linear-gradient(135deg, rgba(102,200,255,.18), rgba(255,255,255,.03));
  box-shadow:inset 0 0 26px rgba(102,200,255,.12);
}
.brand-mark svg { width:28px; height:28px; }
.brand-wordmark { display:flex; flex-direction:column; gap:1px; min-width:0; }
.wordmark-title { font-size:.92rem; font-weight:800; letter-spacing:.07em; text-transform:uppercase; white-space:nowrap; }
.wordmark-sub { color:var(--muted-2); font-size:.66rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; white-space:nowrap; }

.nav { display:flex; align-items:center; gap:22px; color:var(--muted); font-size:.9rem; font-weight:600; }
.nav a { position:relative; padding:7px 0; transition:color .18s ease; }
.nav a::after {
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--signal); transform:scaleX(0); transform-origin:left; transition:transform .18s ease;
}
.nav a:hover, .nav a:focus-visible, .nav a.is-active { color:var(--text); }
.nav a:hover::after, .nav a:focus-visible::after, .nav a.is-active::after { transform:scaleX(1); }

.nav-cta { display:inline-flex; }
.nav-toggle {
  display:none; min-height:44px; padding:0 16px;
  border:1px solid var(--line-2); border-radius:var(--r-pill);
  color:var(--text); background:var(--panel); font:inherit; font-weight:700; cursor:pointer;
}

/* ---------- Buttons ---------- */
.btn, .btn-ghost, .btn-sm {
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  border-radius:var(--r-pill); font-weight:700; line-height:1.1; text-align:center; cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease, background-color .18s ease;
}
.btn, .btn-ghost { min-height:50px; padding:0 22px; border:1px solid transparent; font-size:.95rem; }
.btn { color:#06121f; background:linear-gradient(135deg, var(--signal), #d6f3ff); box-shadow:0 14px 34px rgba(102,200,255,.26); }
.btn-ghost { color:var(--text); border-color:var(--line-2); background:var(--panel); }
.btn-sm { min-height:40px; padding:0 15px; border:1px solid var(--line); color:var(--text); background:var(--panel); font-size:.86rem; }
.btn:hover, .btn-ghost:hover, .btn-sm:hover { transform:translateY(-2px); }
.btn[disabled], .btn-ghost[disabled] { opacity:.5; cursor:not-allowed; transform:none; }

/* ---------- Shared pieces ---------- */
.eyebrow {
  display:inline-flex; align-items:center; gap:9px; padding:8px 13px;
  border:1px solid var(--line); border-radius:var(--r-pill); background:var(--panel);
  font-size:.72rem; font-weight:800; letter-spacing:.14em; text-transform:uppercase; color:var(--signal-soft);
}
.eyebrow::before { content:""; width:8px; height:8px; border-radius:50%; background:var(--signal); box-shadow:0 0 16px var(--signal); }

.kicker { font-family:var(--font-mono); font-size:.78rem; font-weight:600; letter-spacing:.18em; text-transform:uppercase; color:var(--signal); margin-bottom:14px; }

.pill {
  display:inline-flex; align-items:center; gap:7px; width:fit-content; padding:7px 12px;
  border-radius:var(--r-pill); font-size:.72rem; font-weight:700; letter-spacing:.06em; text-transform:uppercase; border:1px solid var(--line); color:var(--muted);
}
.pill.signal { color:var(--signal-soft); border-color:rgba(102,200,255,.32); background:rgba(102,200,255,.08); }
.pill.bio    { color:var(--viability); border-color:rgba(148,226,178,.32); background:rgba(148,226,178,.08); }
.pill.gold   { color:var(--provenance-soft); border-color:rgba(216,179,106,.36); background:rgba(216,179,106,.10); }

.panel {
  border:1px solid var(--line); border-radius:var(--r-lg);
  background:linear-gradient(180deg, var(--panel-2), var(--panel)); box-shadow:var(--shadow-sm);
}

.section { padding:54px 0; }
.section-head { display:grid; grid-template-columns:minmax(0,.92fr) minmax(280px,1.08fr); gap:30px; align-items:end; margin-bottom:30px; }
.section-head h2 { font-family:var(--font-display); font-weight:600; font-size:clamp(1.9rem,3.8vw,3rem); letter-spacing:-.025em; }
.section-head h2 em { font-style:italic; color:var(--signal-soft); }
.section-copy { font-size:1rem; }

.text-link { color:var(--text); font-weight:700; text-decoration:underline; text-decoration-color:rgba(102,200,255,.55); text-underline-offset:4px; transition:color .18s ease, text-decoration-color .18s ease; }
.text-link:hover, .text-link:focus-visible { color:var(--signal); text-decoration-color:var(--signal); }

/* ---------- Hero ---------- */
.hero { padding:64px 0 40px; }
.hero-grid { display:grid; grid-template-columns:minmax(0,1.14fr) minmax(300px,.86fr); gap:26px; align-items:stretch; }
.hero-copy { position:relative; overflow:hidden; padding:clamp(28px,4vw,46px); }
.hero-copy::after {
  content:""; position:absolute; right:-120px; bottom:-160px; width:340px; height:340px; border-radius:50%;
  background:radial-gradient(circle, rgba(102,200,255,.18), transparent 66%); pointer-events:none;
}
.hero-copy h1 {
  font-family:var(--font-display); font-weight:600; max-width:14ch; margin:20px 0 0;
  font-size:clamp(2.6rem,5.6vw,4.6rem); letter-spacing:-.03em;
}
.hero-copy h1 em { font-style:italic; color:var(--signal-soft); }
.lead { max-width:62ch; margin:20px 0 0; color:var(--muted); font-size:clamp(1.02rem,1.5vw,1.16rem); }
.lead strong { color:var(--text); font-weight:600; }
.hero-actions { display:flex; flex-wrap:wrap; gap:13px; margin-top:30px; }

.proof-strip { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px; margin-top:32px; padding-top:24px; border-top:1px solid rgba(255,255,255,.09); }
.proof-strip span { display:block; margin-bottom:5px; color:var(--muted-2); font-size:.72rem; font-weight:700; text-transform:uppercase; letter-spacing:.08em; }
.proof-strip strong { display:block; color:var(--text); font-family:var(--font-mono); font-weight:600; font-size:.94rem; line-height:1.3; letter-spacing:-.01em; }

.hero-side { display:grid; gap:13px; padding:20px; align-content:start; }
.hero-logo { margin:0 0 2px; padding:18px 20px; display:flex; justify-content:center;
  border:1px solid var(--line); border-radius:var(--r-md);
  background:radial-gradient(120% 130% at 50% 0%, rgba(102,200,255,.12), rgba(255,255,255,.02) 70%); }
.hero-logo img { width:100%; max-width:300px; height:auto; filter:drop-shadow(0 8px 26px rgba(77,151,230,.35)); }
.motif { width:100%; height:auto; border:1px solid var(--line); border-radius:var(--r-md); background:rgba(255,255,255,.025); }
.flow-path { stroke-dasharray:6 8; animation:flow 3.4s linear infinite; }
@keyframes flow { to { stroke-dashoffset:-56; } }

.thesis-card { border:1px solid var(--line); border-radius:var(--r-md); background:var(--panel); padding:17px; }
.thesis-card h2, .thesis-card h3 { font-size:1.02rem; font-weight:600; margin-bottom:7px; }
.thesis-card p { font-size:.88rem; }
.thesis-card.gold { border-color:rgba(216,179,106,.30); background:linear-gradient(180deg, rgba(216,179,106,.10), var(--panel)); }

/* ---------- Cards / grids ---------- */
.grid-2,.grid-3,.grid-4,.grid-5 { display:grid; gap:18px; }
.grid-2 { grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid-3 { grid-template-columns:repeat(3,minmax(0,1fr)); }
.grid-4 { grid-template-columns:repeat(4,minmax(0,1fr)); }
.grid-5 { grid-template-columns:repeat(5,minmax(0,1fr)); }

.card {
  position:relative; border:1px solid var(--line); border-radius:var(--r-lg);
  background:linear-gradient(180deg, var(--panel-2), var(--panel)); padding:24px; box-shadow:var(--shadow-sm);
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover { transform:translateY(-3px); border-color:var(--line-2); box-shadow:var(--shadow); }
.card h3 { font-size:1.06rem; font-weight:600; margin-bottom:8px; }
.card p { font-size:.92rem; }
.card .list { margin:13px 0 0; padding-left:18px; }
.card .list li { margin:7px 0; color:var(--muted); font-size:.9rem; }

.card-number, .flow-num {
  display:inline-flex; align-items:center; justify-content:center; width:34px; height:34px; margin-bottom:14px;
  font-family:var(--font-mono); font-weight:600; border-radius:50%;
}
.card-number { border:1px solid rgba(102,200,255,.30); color:var(--signal); background:rgba(102,200,255,.08); font-size:.86rem; }

/* product flow */
.flow-card .flow-num { color:#06121f; background:var(--signal); }
.flow-card.node { border-color:rgba(148,226,178,.4); background:linear-gradient(180deg, rgba(148,226,178,.10), var(--panel)); }
.flow-card.node .flow-num { background:var(--viability); }
.status-pill { margin-top:16px; }

/* metrics */
.metric-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:18px; }
.metric { border:1px solid var(--line); border-radius:var(--r-md); background:var(--panel-2); padding:24px; }
.metric strong { display:block; margin-bottom:8px; color:var(--text); font-family:var(--font-mono); font-weight:600; font-size:clamp(1.5rem,2.8vw,2.1rem); letter-spacing:-.03em; line-height:1; }
.metric span { display:block; color:var(--muted); font-size:.9rem; }
.metric small { display:block; margin-top:10px; color:var(--muted-2); font-size:.76rem; line-height:1.35; }

/* timeline */
.timeline { position:relative; display:grid; gap:16px; }
.timeline::before { content:""; position:absolute; top:12px; bottom:12px; left:17px; width:1px; background:rgba(255,255,255,.14); }
.timeline-item { position:relative; display:grid; grid-template-columns:34px minmax(0,1fr); gap:16px; align-items:start; }
.timeline-dot { position:relative; z-index:1; width:34px; height:34px; border:1px solid rgba(102,200,255,.30); border-radius:50%; background:#0b1728; box-shadow:inset 0 0 0 8px rgba(102,200,255,.09); }
.timeline-content { border:1px solid var(--line); border-radius:var(--r-md); background:var(--panel); padding:20px; }
.timeline-content .date { display:block; margin-bottom:5px; color:var(--signal); font-family:var(--font-mono); font-size:.76rem; font-weight:600; letter-spacing:.06em; text-transform:uppercase; }
.timeline-content h3 { font-size:1.02rem; font-weight:600; margin-bottom:5px; }
.timeline-content p { font-size:.9rem; }

/* risk */
.risk-card h3 span { color:var(--danger); }
.role { margin:-2px 0 12px; color:var(--signal); font-family:var(--font-mono); font-size:.76rem; font-weight:600; letter-spacing:.06em; text-transform:uppercase; }

/* ---------- Contact / form ---------- */
.contact-panel { display:grid; grid-template-columns:minmax(0,1fr) minmax(320px,.85fr); gap:30px; padding:clamp(26px,4vw,42px);
  background:linear-gradient(135deg, rgba(102,200,255,.13), transparent 44%), linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04)); }
.contact-panel h2 { font-family:var(--font-display); font-weight:600; font-size:clamp(1.7rem,3.4vw,2.6rem); letter-spacing:-.025em; }
.form { display:grid; gap:14px; }
.field { display:grid; gap:7px; }
.field label { font-size:.82rem; font-weight:600; color:var(--text); }
.field label .req { color:var(--signal); }
.field input, .field textarea {
  width:100%; padding:13px 15px; min-height:48px;
  border:1px solid var(--line-2); border-radius:var(--r-sm);
  background:rgba(5,12,22,.5); color:var(--text); font:inherit; font-size:.95rem;
  transition:border-color .18s ease, background-color .18s ease;
}
.field textarea { min-height:104px; resize:vertical; }
.field input::placeholder, .field textarea::placeholder { color:var(--muted-2); }
.field input:focus, .field textarea:focus { border-color:var(--signal); background:rgba(5,12,22,.75); }
.field .help { font-size:.76rem; color:var(--muted-2); }
.field .error { font-size:.78rem; color:var(--danger); min-height:1em; }
.field input[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color:var(--danger); }
.form-status { font-size:.88rem; min-height:1.2em; }
.form-status.ok { color:var(--viability); }
.form-status.err { color:var(--danger); }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.consent { display:flex; gap:10px; align-items:flex-start; font-size:.82rem; color:var(--muted); }
.consent input { width:18px; height:18px; min-height:0; margin-top:3px; accent-color:var(--signal); }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

/* ---------- Reveal animation ----------
   Hidden only when JS is active (.js on <html>), so content is always
   visible if the script fails to load (progressive enhancement). */
.js .reveal { opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.js .reveal.is-in { opacity:1; transform:none; }
.reveal[data-delay="1"]{ transition-delay:.06s; }
.reveal[data-delay="2"]{ transition-delay:.12s; }
.reveal[data-delay="3"]{ transition-delay:.18s; }
.reveal[data-delay="4"]{ transition-delay:.24s; }

/* ---------- Footer ---------- */
footer { padding:38px 0 64px; border-top:1px solid rgba(255,255,255,.07); margin-top:28px; }
.footer-logo { margin:0 auto 22px; max-width:248px; text-align:center; }
.footer-logo img { width:100%; height:auto; opacity:.88; filter:drop-shadow(0 6px 20px rgba(77,151,230,.22)); }
.footer-row { display:flex; flex-wrap:wrap; justify-content:space-between; gap:18px; align-items:center; color:var(--muted); font-size:.9rem; }
.footer-row a { color:var(--text); font-weight:600; }
.footer-row a:hover, .footer-row a:focus-visible { text-decoration:underline; text-underline-offset:4px; }
.disclaimer { max-width:92ch; margin-top:16px; font-size:.82rem; color:var(--muted-2); }
address { font-style:normal; }

/* ---------- Responsive ---------- */
@media (max-width:1024px) {
  .hero-grid, .section-head, .contact-panel { grid-template-columns:1fr; }
  .grid-5, .grid-4, .grid-3, .metric-grid, .proof-strip { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .section-head { align-items:start; }
}
@media (max-width:760px) {
  :root { --header:66px; }
  .nav {
    position:absolute; top:calc(100% + 1px); right:0; left:0;
    display:none; grid-template-columns:1fr; gap:4px; padding:14px;
    border:1px solid var(--line); border-radius:0 0 20px 20px; background:rgba(7,17,31,.97); box-shadow:var(--shadow);
  }
  .nav.is-open { display:grid; }
  .nav a { padding:12px 12px; border-radius:12px; }
  .nav a:hover, .nav a.is-active { background:var(--panel); }
  .nav-cta { display:none; }
  .nav-toggle { display:inline-flex; }
  .grid-5, .grid-4, .grid-3, .grid-2, .metric-grid, .proof-strip, .form-row { grid-template-columns:1fr; }
  .hero-actions { flex-direction:column; }
  .hero-actions .btn, .hero-actions .btn-ghost { width:100%; }
  .wordmark-sub { display:none; }
}

@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  *, *::before, *::after { animation:none !important; transition:none !important; scroll-behavior:auto !important; }
  .reveal { opacity:1; transform:none; }
}