/* cognibrex.com — the public overview, sign-in and 404.
   Same language as the Instrument Hall: dark = fluorescence microscopy,
   light = H&E brightfield, eight channel colours from real fluorophores. */

:root {
  --bg: #05060b;
  --bg-2: #090b13;
  --surface: #0d1019;
  --raised: #141826;
  --fg: #eceef5;
  --fg-2: #a3a9bb;
  --fg-3: #6b7288;
  --line: rgba(168, 180, 230, 0.11);
  --line-2: rgba(168, 180, 230, 0.22);
  --invert-bg: #eceef5;
  --invert-fg: #05060b;
  --glass: rgba(9, 11, 19, 0.7);
  --field: rgba(255, 255, 255, 0.03);
  --shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.85);
  --ch1: #9a8cff; --ch2: #4f8fff; --ch3: #2fd6f2; --ch4: #3eea92;
  --ch5: #c9f04b; --ch6: #ffb13d; --ch7: #ff5b74; --ch8: #2ee8c2;
  --good: #3eea92; --warn: #ffb13d; --bad: #ff5b74;
  --screen: #04050a;
  --display: "Bodoni Moda", "Bodoni 72", Didot, Georgia, serif;
  --sans: "Schibsted Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --gutter: clamp(16px, 3.2vw, 40px);
  --max: 1240px;
  --r-1: 8px; --r-2: 14px; --r-3: 22px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f4eff2; --bg-2: #efe8ed; --surface: #fbf8fa; --raised: #ffffff;
    --fg: #1d1427; --fg-2: #54495f; --fg-3: #8a7f95;
    --line: rgba(58, 22, 84, 0.12); --line-2: rgba(58, 22, 84, 0.24);
    --invert-bg: #1d1427; --invert-fg: #fbf8fa;
    --glass: rgba(251, 248, 250, 0.82);
    --field: rgba(255, 255, 255, 0.7);
    --shadow: 0 30px 80px -36px rgba(58, 22, 84, 0.35);
    --ch1: #5b47e0; --ch2: #1f5fd6; --ch3: #0a8aa6; --ch4: #0d9356;
    --ch5: #6b8a00; --ch6: #b86a00; --ch7: #cf2448; --ch8: #078f78;
    --good: #0d9356; --warn: #b86a00; --bad: #cf2448;
    color-scheme: light;
  }
}
:root[data-theme="dark"] { color-scheme: dark; }

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 1rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
::selection { background: color-mix(in srgb, var(--ch1) 40%, transparent); }
:focus-visible { outline: 2px solid var(--ch3); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(var(--max), 100% - 2 * var(--gutter)); margin-inline: auto; }
.mono { font-family: var(--mono); letter-spacing: 0; }
.eyebrow {
  font: 500 0.72rem/1.4 var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ch7); box-shadow: 0 0 12px var(--ch7); }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--invert-bg); color: var(--invert-fg); padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 8px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ── Top bar ─────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--glass);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar-in { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-word { font: italic 600 1.45rem/1 var(--display); letter-spacing: -0.01em; }
.brand-mark { width: 30px; height: 30px; color: var(--fg); }
.brand-mark .wheel { transform-origin: 16px 16px; animation: wheel 40s linear infinite; }
@keyframes wheel { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .brand-mark .wheel { animation: none; } }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { font-size: 0.9rem; color: var(--fg-2); text-decoration: none; }
.nav a:hover { color: var(--fg); }
.top-cta { display: flex; gap: 10px; align-items: center; }
@media (max-width: 900px) { .nav { display: none; } .top-cta { margin-left: auto; } }
@media (max-width: 520px) { .top-cta .btn.ghost { display: none; } .brand-word { font-size: 1.25rem; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 44px; padding: 0 20px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: transparent;
  font-weight: 500; font-size: 0.95rem;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background 0.2s, border-color 0.2s, transform 0.2s, color 0.2s;
}
.btn:hover { border-color: var(--fg-3); }
.btn.solid { background: var(--invert-bg); color: var(--invert-fg); border-color: transparent; }
.btn.solid:hover { transform: translateY(-1px); }
.btn.sm { height: 38px; padding: 0 16px; font-size: 0.88rem; }
.btn[disabled] { opacity: 0.55; cursor: progress; transform: none; }
.btn svg { width: 16px; height: 16px; }

/* ── Hero ────────────────────────────────────────────────── */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero canvas.specimen { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.95; }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(70% 60% at 18% 40%, transparent 0%, var(--bg) 92%),
    linear-gradient(180deg, transparent 60%, var(--bg) 100%);
  opacity: 0.86;
}
.hero-in { position: relative; z-index: 2; padding: clamp(72px, 12vw, 150px) 0 clamp(56px, 8vw, 96px); display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: end; }
@media (max-width: 980px) { .hero-in { grid-template-columns: 1fr; } }
h1, h2, h3 { font-weight: 400; margin: 0; }
.hero h1 {
  font: 400 clamp(3rem, 8.2vw, 7.2rem)/0.94 var(--display);
  letter-spacing: -0.035em;
  margin-top: 22px;
}
.hero h1 em { font-style: italic; background: linear-gradient(90deg, var(--ch1), var(--ch3) 35%, var(--ch4) 60%, var(--ch6)); -webkit-background-clip: text; background-clip: text; color: transparent; padding-right: 0.06em; }
.lead { font-size: clamp(1.06rem, 1.5vw, 1.24rem); color: var(--fg-2); max-width: 60ch; margin: 26px 0 0; }
.lead strong { color: var(--fg); font-weight: 500; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

/* the locked hall — an acquisition screen with eight channels behind glass */
.hall {
  position: relative;
  background: var(--screen);
  color: #e6e9f2;
  border: 1px solid rgba(168, 180, 230, 0.16);
  border-radius: var(--r-3);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hall-top { display: flex; justify-content: space-between; align-items: center; font: 500 0.7rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: #7b8299; }
.hall-top .rec { display: inline-flex; align-items: center; gap: 8px; }
.hall-top .rec::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #ff5b74; animation: blink 2.6s ease-in-out infinite; }
@keyframes blink { 50% { opacity: 0.25; } }
.hall-chan { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 18px 0 16px; }
.chan {
  position: relative; aspect-ratio: 1.25; border-radius: 10px;
  background: radial-gradient(circle at 50% 55%, color-mix(in srgb, var(--c) 34%, transparent), transparent 70%), #070912;
  border: 1px solid rgba(168, 180, 230, 0.1);
  overflow: hidden;
}
.chan::before { content: ""; position: absolute; inset: 0; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); background: rgba(4, 5, 10, 0.25); }
.chan b { position: absolute; left: 8px; top: 7px; z-index: 1; font: 600 0.62rem/1 var(--mono); color: color-mix(in srgb, var(--c) 80%, #fff); }
.chan i { position: absolute; inset: 0; z-index: 1; display: grid; place-items: center; color: rgba(230, 233, 242, 0.55); }
.chan i svg { width: 15px; height: 15px; }
.ruler { position: relative; height: 34px; margin: 4px 2px 12px; }
.ruler::before { content: ""; position: absolute; left: 0; right: 0; top: 10px; height: 1px; background: rgba(168, 180, 230, 0.25); }
.ruler span { position: absolute; top: 4px; transform: translateX(-50%); font: 500 0.6rem/1 var(--mono); color: #7b8299; text-align: center; }
.ruler span::before { content: ""; display: block; width: 1px; height: 12px; margin: 0 auto 6px; background: rgba(168, 180, 230, 0.4); }
.hall-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; border-top: 1px solid rgba(168, 180, 230, 0.12); padding-top: 14px; }
.hall-foot p { margin: 0; font-size: 0.86rem; color: #a3a9bb; line-height: 1.45; }
.hall-foot p strong { color: #e6e9f2; font-weight: 500; }
.hall .btn { border-color: rgba(168, 180, 230, 0.3); color: #e6e9f2; }
.hall .btn.solid { background: #eceef5; color: #05060b; }

.figures { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); }
.figures div { padding: 22px 18px 24px; border-right: 1px solid var(--line); }
.figures div:last-child { border-right: 0; }
.figures dt { font: 500 0.66rem/1.3 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-3); }
.figures dd { margin: 8px 0 0; font: 400 1.9rem/1 var(--display); letter-spacing: -0.02em; }
.figures dd small { display: block; font: 400 0.8rem/1.4 var(--sans); color: var(--fg-2); margin-top: 8px; letter-spacing: 0; }
@media (max-width: 900px) { .figures { grid-template-columns: repeat(2, 1fr); } .figures div { border-bottom: 1px solid var(--line); } .figures div:nth-child(2n) { border-right: 0; } }

/* ── Sections ────────────────────────────────────────────── */
.section { padding: clamp(72px, 10vw, 128px) 0; border-bottom: 1px solid var(--line); }
.head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr); gap: 32px; align-items: end; margin-bottom: clamp(36px, 5vw, 56px); }
@media (max-width: 900px) { .head { grid-template-columns: 1fr; } }
h2 { font: 400 clamp(2.2rem, 4.8vw, 3.9rem)/1.02 var(--display); letter-spacing: -0.03em; margin-top: 16px; }
h2 em { font-style: italic; color: var(--ch3); }
.sub { color: var(--fg-2); margin: 0; max-width: 56ch; font-size: 1.04rem; }

.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r-3); overflow: hidden; }
.pillar { background: var(--bg); padding: clamp(24px, 3vw, 36px); }
.pillar .no { font: 600 0.72rem/1 var(--mono); color: var(--c); letter-spacing: 0.1em; }
.pillar h3 { font: 400 1.75rem/1.1 var(--display); letter-spacing: -0.02em; margin: 18px 0 12px; }
.pillar p { margin: 0; color: var(--fg-2); }
@media (max-width: 900px) { .pillars { grid-template-columns: 1fr; } }

.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 1000px) { .products { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .products { grid-template-columns: 1fr; } }
.product {
  position: relative; display: flex; flex-direction: column; gap: 12px;
  padding: 26px 24px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  overflow: hidden;
}
.product::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--c); opacity: 0.9; }
.product::after { content: ""; position: absolute; right: -60px; top: -60px; width: 180px; height: 180px; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--c) 22%, transparent), transparent 70%); pointer-events: none; }
.pill { align-self: flex-start; display: inline-flex; align-items: center; gap: 7px; font: 500 0.68rem/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--fg-2); }
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--c); }
.pill.live { color: var(--good); border-color: color-mix(in srgb, var(--good) 40%, transparent); }
.pill.live::before { background: var(--good); box-shadow: 0 0 8px var(--good); }
.product h3 { font: 400 1.7rem/1.08 var(--display); letter-spacing: -0.02em; }
.product h3 small { display: block; font: 500 0.9rem/1.4 var(--sans); color: var(--fg-2); letter-spacing: 0; margin-top: 6px; }
.product p { margin: 0; color: var(--fg-2); font-size: 0.96rem; }
.tags { margin-top: auto !important; padding-top: 8px; font: 500 0.7rem/1.6 var(--mono) !important; color: var(--fg-3) !important; }
.product a { color: var(--fg); font-weight: 500; }

.steps { list-style: none; margin: 0 0 clamp(36px, 5vw, 52px); padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: s; }
.steps li { counter-increment: s; padding: 22px; border: 1px solid var(--line); border-radius: var(--r-2); background: var(--surface); }
.steps li::before { content: "0" counter(s); font: 600 0.72rem/1 var(--mono); color: var(--ch3); letter-spacing: 0.1em; }
.steps h3 { font: 400 1.4rem/1.15 var(--display); margin: 12px 0 6px; }
.steps p { margin: 0; color: var(--fg-2); font-size: 0.94rem; }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }

/* ── Forms ───────────────────────────────────────────────── */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-3); padding: clamp(22px, 3.4vw, 40px); box-shadow: var(--shadow); }
.form { display: grid; gap: 18px; }
.row { display: grid; gap: 16px; grid-template-columns: repeat(var(--cols, 2), minmax(0, 1fr)); }
@media (max-width: 700px) { .row { grid-template-columns: 1fr; } }
.field { display: grid; gap: 7px; min-width: 0; }
.field > label, .legend { font-size: 0.86rem; font-weight: 500; color: var(--fg); }
.opt { font-weight: 400; color: var(--fg-3); font-size: 0.78rem; margin-left: 6px; }
.hint { font-size: 0.8rem; color: var(--fg-3); margin: 0; }
.input, .select, .textarea {
  width: 100%;
  background: var(--field);
  border: 1px solid var(--line-2);
  border-radius: var(--r-1);
  padding: 12px 14px;
  font-size: 0.98rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.textarea { resize: vertical; min-height: 116px; line-height: 1.5; }
.select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--fg-3) 50%), linear-gradient(135deg, var(--fg-3) 50%, transparent 50%); background-position: calc(100% - 20px) 52%, calc(100% - 15px) 52%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.select option { background: var(--raised); color: var(--fg); }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--ch3); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ch3) 20%, transparent); }
.input:user-invalid, .select:user-invalid, .textarea:user-invalid { border-color: var(--bad); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.chip span { display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px; border-radius: 999px; border: 1px solid var(--line-2); font-size: 0.88rem; color: var(--fg-2); transition: all 0.15s; user-select: none; }
.chip span::before { content: ""; width: 7px; height: 7px; border-radius: 50%; border: 1px solid var(--fg-3); transition: all 0.15s; }
.chip input:checked + span { color: var(--fg); border-color: var(--ch3); background: color-mix(in srgb, var(--ch3) 12%, transparent); }
.chip input:checked + span::before { background: var(--ch3); border-color: var(--ch3); box-shadow: 0 0 8px var(--ch3); }
.chip input:focus-visible + span { outline: 2px solid var(--ch3); outline-offset: 2px; }
.check { display: flex; gap: 12px; align-items: flex-start; font-size: 0.9rem; color: var(--fg-2); cursor: pointer; }
.check input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--ch3); flex-shrink: 0; }
.stars { display: flex; gap: 6px; }
.stars label { position: relative; }
.stars input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.stars span { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--line-2); font: 600 0.9rem/1 var(--mono); color: var(--fg-3); transition: all 0.15s; }
.stars input:checked + span { color: var(--invert-fg); background: var(--ch6); border-color: var(--ch6); }
.stars input:focus-visible + span { outline: 2px solid var(--ch3); outline-offset: 2px; }
.hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; justify-content: space-between; padding-top: 6px; }
.msg { margin: 0; font-size: 0.9rem; }
.msg.err { color: var(--bad); }
.done { display: none; text-align: center; padding: clamp(24px, 5vw, 56px) 8px; }
.done.show { display: block; }
.done .tick { width: 56px; height: 56px; margin: 0 auto 18px; border-radius: 50%; display: grid; place-items: center; background: color-mix(in srgb, var(--good) 16%, transparent); color: var(--good); }
.done h3 { font: 400 2rem/1.1 var(--display); margin-bottom: 10px; }
.done p { color: var(--fg-2); max-width: 52ch; margin: 0 auto; }

.split { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 960px) { .split { grid-template-columns: 1fr; } }
.aside-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.aside-list li { display: flex; gap: 12px; color: var(--fg-2); font-size: 0.95rem; }
.aside-list li::before { content: ""; flex-shrink: 0; width: 7px; height: 7px; margin-top: 9px; border-radius: 2px; background: var(--c, var(--ch3)); }

/* ── FAQ ─────────────────────────────────────────────────── */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 24px; padding: 22px 0; font: 400 clamp(1.15rem, 1.8vw, 1.4rem)/1.3 var(--display); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 300 1.6rem/1 var(--sans); color: var(--fg-3); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: -6px 0 24px; color: var(--fg-2); max-width: 78ch; }

/* ── Footer ──────────────────────────────────────────────── */
.footer { padding: 56px 0 48px; color: var(--fg-2); font-size: 0.9rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr; } }
.footer h4 { font: 500 0.7rem/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-3); margin: 0 0 14px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer a { color: var(--fg-2); text-decoration: none; }
.footer a:hover { color: var(--fg); }
.footer-word { font: italic 600 1.8rem/1 var(--display); color: var(--fg); margin-bottom: 14px; }
.fine { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: 0.8rem; color: var(--fg-3); }

/* ── Sign-in / 404 ───────────────────────────────────────── */
.solo { min-height: calc(100vh - 69px); min-height: calc(100svh - 69px); display: grid; place-items: center; padding: 48px 0 80px; position: relative; overflow: hidden; }
.solo canvas.specimen { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.5; }
.solo .panel { position: relative; z-index: 1; width: min(460px, 100%); }
.solo h1 { font: 400 clamp(2.2rem, 5vw, 3rem)/1.04 var(--display); letter-spacing: -0.03em; margin: 14px 0 10px; }
.solo h1 em { font-style: italic; color: var(--ch3); }
.lock { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; border: 1px solid var(--line-2); color: var(--ch3); }
.lock svg { width: 20px; height: 20px; }

.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }