/* ============================================================
   BitGenius — Speech AI
   Design tokens: spectrogram duotone on deep ink
   ============================================================ */

:root {
  /* Color */
  --ink:        #080B14;
  --ink-2:      #0B0F1B;
  --surface:    #10141F;
  --surface-2:  #161B2A;
  --line:       rgba(148, 163, 199, 0.14);
  --line-strong:rgba(148, 163, 199, 0.28);

  --teal:       #34E5C4;
  --teal-dim:   #1FB39A;
  --coral:      #FF6B4A;
  --indigo:     #5566E6;
  --amber:      #FFC24A;

  --text:       #E8ECF3;
  --muted:      #93A0B8;
  --faint:      #5D6880;

  --grad-signal: linear-gradient(90deg, #4453C7 0%, #34E5C4 52%, #FFC24A 100%);
  --grad-teal:   linear-gradient(135deg, #34E5C4 0%, #1FB39A 100%);

  /* Type */
  --display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --body:    "IBM Plex Sans", system-ui, sans-serif;
  --mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Metrics */
  --maxw: 1180px;
  --gap: clamp(1rem, 2vw, 2rem);
  --radius: 16px;
  --radius-sm: 10px;
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}
body {
  margin: 0;
  font-family: var(--body);
  background: var(--ink);
  color: var(--text);
  line-height: 1.6;
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--display); font-weight: 600; line-height: 1.05; letter-spacing: -0.02em; margin: 0; }

/* ---------- Layout helpers ---------- */
.wrap { width: min(var(--maxw), 92vw); margin-inline: auto; }
.section { padding: clamp(4.5rem, 9vw, 8rem) 0; position: relative; }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 1.1rem;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--teal);
  opacity: 0.7;
}
.section-title { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 3.1rem); max-width: 18ch; }
.lede { color: var(--muted); max-width: 56ch; margin-top: 1.1rem; font-size: 1.08rem; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   Nav
   ============================================================ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 2.4rem);
  background: color-mix(in srgb, var(--ink) 70%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color: var(--line); background: color-mix(in srgb, var(--ink) 88%, transparent); }
.brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--display); font-weight: 600; letter-spacing: -0.02em; font-size: 1.12rem; }
.brand img { width: 30px; height: 30px; border-radius: 7px; background: #fff; padding: 2px; }
.brand b { font-weight: 600; }
.nav-links { display: flex; gap: 1.6rem; align-items: center; }
.nav-links a { color: var(--muted); font-size: 0.92rem; transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.04em;
  padding: 0.55rem 1rem; border: 1px solid var(--line-strong); border-radius: 999px;
  color: var(--text) !important; transition: border-color .2s, background .2s;
}
.nav-cta:hover { border-color: var(--teal); background: rgba(52,229,196,0.08); }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); cursor: pointer; }

@media (max-width: 800px) {
  .nav-links { position: fixed; inset: 64px 0 auto 0; flex-direction: column; align-items: flex-start;
    gap: 0; padding: 0.5rem 1.4rem 1.4rem; background: var(--ink-2); border-bottom: 1px solid var(--line);
    transform: translateY(-120%); transition: transform .35s ease; }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 0.8rem 0; width: 100%; border-bottom: 1px solid var(--line); }
  .nav-cta { margin-top: 0.8rem; }
  .nav-toggle { display: block; }
}

/* ============================================================
   Hero — the signature "decode" moment
   ============================================================ */
.hero { position: relative; padding: clamp(7rem, 14vh, 10rem) 0 clamp(3rem, 6vw, 5rem); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% 0 auto -10%; height: 80vh; z-index: 0;
  background: radial-gradient(50% 60% at 20% 10%, rgba(68,83,199,0.25), transparent 70%),
              radial-gradient(45% 55% at 85% 20%, rgba(52,229,196,0.14), transparent 70%);
  filter: blur(10px); pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 4vw, 4rem); align-items: center; }
@media (max-width: 940px) { .hero-grid { grid-template-columns: 1fr; } }

.hero h1 {
  font-size: clamp(2.6rem, 1.4rem + 4.4vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
}
.hero h1 .grad {
  background: var(--grad-signal); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.sub { color: var(--muted); font-size: clamp(1.05rem, 1rem + 0.4vw, 1.25rem); max-width: 46ch; margin: 1.5rem 0 2rem; }
.hero-cta { display: flex; gap: 0.9rem; flex-wrap: wrap; align-items: center; }

.btn {
  font-family: var(--body); font-weight: 500; font-size: 0.98rem; cursor: pointer;
  padding: 0.85rem 1.5rem; border-radius: 999px; border: 1px solid transparent;
  display: inline-flex; align-items: center; gap: 0.5rem; transition: transform .15s ease, box-shadow .25s, background .25s, border-color .25s;
}
.btn-primary { background: var(--teal); color: #04140F; box-shadow: 0 8px 30px -8px rgba(52,229,196,0.55); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -8px rgba(52,229,196,0.6); }
.btn-ghost { border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--teal); background: rgba(52,229,196,0.06); }

.hero-metrics { display: flex; gap: 2rem; margin-top: 2.6rem; flex-wrap: wrap; }
.hero-metrics .m { display: flex; flex-direction: column; }
.hero-metrics .m b { font-family: var(--mono); font-size: 1.5rem; color: var(--text); font-weight: 500; }
.hero-metrics .m span { font-size: 0.82rem; color: var(--faint); letter-spacing: 0.02em; }

/* ---- Decode panel ---- */
.decoder {
  background: linear-gradient(180deg, var(--surface) 0%, var(--ink-2) 100%);
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: 0 40px 80px -40px rgba(0,0,0,0.8);
}
.decoder-bar {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.75rem 1rem; border-bottom: 1px solid var(--line);
  font-family: var(--mono); font-size: 0.74rem; color: var(--muted);
}
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 0 rgba(255,107,74,0.6); animation: pulse 1.8s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(255,107,74,0.5);} 70% { box-shadow: 0 0 0 8px rgba(255,107,74,0);} 100% { box-shadow: 0 0 0 0 rgba(255,107,74,0);} }
.decoder-bar .lang { margin-left: auto; color: var(--faint); }
.decoder-bar .lang b { color: var(--teal); font-weight: 500; }

.spectro-wrap { position: relative; padding: 0.4rem 0 0; background: #060911; }
#spectro { display: block; width: 100%; height: 128px; }
.playhead { position: absolute; top: 0.4rem; bottom: 0; width: 2px; background: rgba(255,255,255,0.85); box-shadow: 0 0 12px 2px rgba(52,229,196,0.7); left: 0; }

.transcript { padding: 1.1rem 1.2rem 1.3rem; font-family: var(--mono); font-size: 0.86rem; min-height: 150px; }
.transcript .line { display: flex; gap: 0.8rem; margin-bottom: 0.65rem; opacity: 0; transform: translateY(6px); transition: opacity .4s, transform .4s; }
.transcript .line.show { opacity: 1; transform: none; }
.transcript .ts { color: var(--teal-dim); flex-shrink: 0; }
.transcript .spk { color: var(--coral); flex-shrink: 0; }
.transcript .txt { color: var(--text); }
.caret { display: inline-block; width: 8px; height: 1.05em; background: var(--teal); vertical-align: -2px; margin-left: 2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.transcript-foot { display: flex; gap: 1.2rem; padding: 0.7rem 1.2rem; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 0.72rem; color: var(--faint); flex-wrap: wrap; }
.transcript-foot b { color: var(--teal); font-weight: 500; }

/* ============================================================
   Trust bar
   ============================================================ */
.trust { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--ink-2); }
.trust .wrap { display: flex; align-items: center; gap: clamp(1rem,4vw,3rem); flex-wrap: wrap; padding: 1.6rem 0; }
.trust .label { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--faint); }
.trust .items { display: flex; gap: clamp(1rem,3vw,2.4rem); flex-wrap: wrap; align-items: center; color: var(--muted); font-weight: 500; }
.trust .items span { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.95rem; }
.oracle-badge {
  display: inline-flex; align-items: center; gap: 0.55rem; padding: 0.4rem 0.85rem;
  border: 1px solid var(--line-strong); border-radius: 999px; color: var(--text); font-weight: 500; font-size: 0.9rem;
}
.oracle-badge .o { color: #FF4B33; font-family: var(--display); font-weight: 700; letter-spacing: -0.03em; }

/* ============================================================
   Flagship ASR
   ============================================================ */
.flagship-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem,5vw,4.5rem); align-items: center; }
@media (max-width: 900px) { .flagship-grid { grid-template-columns: 1fr; } }
.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat {
  background: var(--surface); padding: 1.5rem 1.4rem; position: relative;
}
.stat b { font-family: var(--mono); font-size: clamp(1.8rem, 1.2rem + 1.6vw, 2.5rem); font-weight: 500; display: block; letter-spacing: -0.02em; }
.stat b .u { font-size: 0.9rem; color: var(--muted); }
.stat .grad { background: var(--grad-signal); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { color: var(--muted); font-size: 0.86rem; display: block; margin-top: 0.35rem; }
.flag-copy ul { list-style: none; padding: 0; margin: 1.6rem 0 0; }
.flag-copy li { display: flex; gap: 0.75rem; padding: 0.6rem 0; border-top: 1px solid var(--line); color: var(--muted); }
.flag-copy li:first-child { border-top: 0; }
.flag-copy li .ck { color: var(--teal); flex-shrink: 0; margin-top: 2px; }
.flag-copy li b { color: var(--text); font-weight: 600; }

/* ============================================================
   Pipeline diagram
   ============================================================ */
.pipeline { background: var(--ink-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pipe-diagram { margin-top: 3rem; border: 1px solid var(--line); border-radius: var(--radius); background:
   radial-gradient(120% 100% at 50% 0%, rgba(52,229,196,0.05), transparent 60%), var(--surface); padding: clamp(1.4rem,3vw,2.6rem); overflow-x: auto; }
.pipe-diagram svg { width: 100%; min-width: 640px; height: auto; display: block; }

/* ============================================================
   Capabilities grid
   ============================================================ */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-top: 3rem; }
@media (max-width: 860px) { .cap-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cap-grid { grid-template-columns: 1fr; } }
.cap {
  background: var(--surface); padding: 1.8rem 1.6rem; transition: background .3s; position: relative;
}
.cap:hover { background: var(--surface-2); }
.cap .ic { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 11px;
  background: rgba(52,229,196,0.1); color: var(--teal); margin-bottom: 1rem; border: 1px solid rgba(52,229,196,0.2); }
.cap h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.cap p { color: var(--muted); font-size: 0.92rem; margin: 0; }
.cap .tag { font-family: var(--mono); font-size: 0.68rem; color: var(--faint); letter-spacing: 0.08em; text-transform: uppercase; position: absolute; top: 1.8rem; right: 1.6rem; }

/* ============================================================
   Engineering credibility
   ============================================================ */
.eng-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,4vw,3.5rem); align-items: start; }
@media (max-width: 860px) { .eng-grid { grid-template-columns: 1fr; } }
.stack { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 1.6rem; }
.chip { font-family: var(--mono); font-size: 0.78rem; padding: 0.42rem 0.8rem; border: 1px solid var(--line-strong); border-radius: 8px; color: var(--muted); background: var(--surface); transition: border-color .2s, color .2s; }
.chip:hover { border-color: var(--teal); color: var(--text); }
.lead-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.8rem; }
.lead-card .role { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal); }
.lead-card h3 { font-size: 1.4rem; margin: 0.5rem 0 0.2rem; }
.lead-card .sub { color: var(--faint); font-size: 0.9rem; margin-bottom: 1.1rem; }
.lead-card p { color: var(--muted); font-size: 0.95rem; }
.lead-card .links { display: flex; gap: 1rem; margin-top: 1.2rem; font-family: var(--mono); font-size: 0.82rem; }
.lead-card .links a { color: var(--teal); border-bottom: 1px solid transparent; transition: border-color .2s; }
.lead-card .links a:hover { border-color: var(--teal); }

/* ============================================================
   Oracle partnership
   ============================================================ */
.oracle-sec { text-align: center; }
.oracle-sec .card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(2.4rem,5vw,4rem);
  background: radial-gradient(100% 140% at 50% 0%, rgba(255,75,51,0.08), transparent 60%), var(--surface);
  max-width: 760px; margin: 0 auto;
}
.oracle-sec .card .o { font-family: var(--display); font-weight: 700; color: #FF4B33; font-size: clamp(2rem,1.2rem+3vw,3rem); letter-spacing: -0.04em; }
.oracle-sec p { color: var(--muted); max-width: 52ch; margin: 1.1rem auto 0; }

/* ============================================================
   Code of Conduct teaser
   ============================================================ */
.coc-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem,4vw,3.5rem); align-items: center; }
@media (max-width: 860px) { .coc-grid { grid-template-columns: 1fr; } }
.coc-values { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.coc-values div { background: var(--surface); padding: 1.15rem 1.2rem; }
.coc-values b { display: flex; align-items: center; gap: 0.5rem; font-family: var(--display); font-size: 1rem; }
.coc-values b::before { content: ""; width: 7px; height: 7px; border-radius: 2px; background: var(--teal); }
.coc-values span { color: var(--faint); font-size: 0.82rem; display: block; margin-top: 0.25rem; }

/* ============================================================
   Contact section
   ============================================================ */
.contact-band { border-top: 1px solid var(--line); background:
  radial-gradient(90% 120% at 12% 0%, rgba(52,229,196,0.06), transparent 55%), var(--ink); }
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem,5vw,4rem); align-items: center; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.9rem; }
.contact-card h4 { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--faint); margin-bottom: 0.9rem; }
.contact-card .office { color: var(--text); font-size: 1.05rem; line-height: 1.55; margin: 0 0 1.4rem; }
.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li { display: flex; align-items: center; gap: 0.85rem; padding: 0.75rem 0; border-top: 1px solid var(--line); }
.contact-list li:first-child { border-top: 0; }
.contact-list .ci { width: 34px; height: 34px; flex-shrink: 0; display: grid; place-items: center; border-radius: 9px;
  background: rgba(52,229,196,0.1); color: var(--teal); border: 1px solid rgba(52,229,196,0.2); }
.contact-list a, .contact-list span { color: var(--muted); font-size: 0.98rem; transition: color .2s; }
.contact-list a:hover { color: var(--teal); }

/* ============================================================
   Footer
   ============================================================ */
.footer { border-top: 1px solid var(--line); background: var(--ink-2); padding: clamp(3rem,6vw,5rem) 0 2rem; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .foot-grid { grid-template-columns: 1fr; } }
.footer .brand { margin-bottom: 1rem; }
.footer p { color: var(--muted); font-size: 0.92rem; max-width: 34ch; }
.foot-col h4 { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--faint); margin-bottom: 1rem; }
.foot-col a, .foot-col span { display: block; color: var(--muted); font-size: 0.92rem; padding: 0.32rem 0; transition: color .2s; }
.foot-col a:hover { color: var(--teal); }
.foot-bottom { border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 1.6rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--faint); font-size: 0.82rem; font-family: var(--mono); }
.foot-social { display: flex; gap: 1rem; }
.foot-social a { color: var(--faint); transition: color .2s; }
.foot-social a:hover { color: var(--teal); }

/* ---------- Focus visibility ---------- */
:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 4px; }

/* ============================================================
   Standalone doc page (Code of Conduct)
   ============================================================ */
.doc { max-width: 760px; margin: 0 auto; padding: clamp(7rem,12vh,9rem) 0 5rem; }
.doc-back { font-family: var(--mono); font-size: 0.82rem; color: var(--muted); display: inline-flex; gap: 0.5rem; align-items: center; margin-bottom: 2rem; }
.doc-back:hover { color: var(--teal); }
.doc h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem); margin-bottom: 0.6rem; }
.doc .updated { font-family: var(--mono); font-size: 0.78rem; color: var(--faint); margin-bottom: 2.6rem; }
.doc h2 { font-size: 1.5rem; margin: 2.6rem 0 0.4rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.doc h2:first-of-type { border-top: 0; padding-top: 0; }
.doc h3 { font-size: 1.1rem; margin: 1.6rem 0 0.4rem; color: var(--text); }
.doc p, .doc li { color: var(--muted); }
.doc ul { padding-left: 1.2rem; }
.doc li { margin: 0.4rem 0; }
.doc strong { color: var(--text); font-weight: 600; }
.doc a { color: var(--teal); }
.doc .callout { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--coral); border-radius: var(--radius-sm); padding: 1.2rem 1.4rem; margin: 1.4rem 0; }