/* yololab landing page. Dark-only by design: it is a front door, not a tool,
   and the detection demo reads best against a deep background. The workspace
   keeps following the viewer's system appearance. */

@font-face {
  font-family: 'Brand';
  src: url('/static/fonts/Brand.woff2') format('woff2-variations'),
       url('/static/fonts/Brand.woff2') format('woff2');
  font-weight: 500 700;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #05080f;
  --bg-2: #0a1020;
  --panel: rgba(255, 255, 255, .04);
  --panel-hi: rgba(255, 255, 255, .07);
  --line: rgba(148, 176, 255, .14);
  --line-hi: rgba(120, 190, 255, .38);
  --text: #eaf0ff;
  --muted: #93a0bf;
  --blue: #3b82f6;
  --cyan: #22d3ee;
  --green: #34d399;
  --grad: linear-gradient(95deg, #3b82f6 0%, #22d3ee 48%, #34d399 100%);
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto,
          system-ui, sans-serif;
  --font-brand: 'Brand', 'Space Grotesk', var(--font);
  --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  --wrap: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
code { font-family: var(--mono); font-size: .9em; color: var(--cyan); }

.skip {
  position: absolute; inset-inline-start: 16px; top: -60px; z-index: 100;
  padding: 8px 14px; border-radius: 8px; background: var(--text); color: var(--bg);
}
.skip:focus { top: 12px; }

:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

/* ---------- backdrop ---------- */

.bgGrid, .bgGlow { position: fixed; pointer-events: none; z-index: -1; }
.bgGrid {
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: .38;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 20%, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 20%, #000 20%, transparent 75%);
}
.bgGlow { width: 60vw; height: 60vw; max-width: 760px; max-height: 760px; border-radius: 50%; filter: blur(90px); opacity: .32; }
.bgGlow.g1 { top: -18vw; inset-inline-start: -12vw; background: radial-gradient(circle, #2563eb, transparent 65%); }
.bgGlow.g2 { top: 24vh; inset-inline-end: -18vw; background: radial-gradient(circle, #10b981, transparent 65%); opacity: .2; }

/* ---------- nav ---------- */

.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  padding: 14px max(20px, calc((100vw - var(--wrap)) / 2));
  background: rgba(5, 8, 15, .68);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
          backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}
.logo { display: inline-flex; align-items: center; gap: 10px; direction: ltr; }
.logo img { display: block; }
.word {
  font: 600 22px/1 var(--font-brand);
  letter-spacing: -.01em;
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  color: transparent; -webkit-text-fill-color: transparent;
}
.word .lab { font-weight: 700; }
.navLinks { display: flex; gap: 6px; margin-inline-start: 18px; }
.navLinks a { padding: 6px 12px; border-radius: 8px; color: var(--muted); font-size: 14px; transition: color .15s, background .15s; }
.navLinks a:hover { color: var(--text); background: var(--panel); }
.navCta { margin-inline-start: auto; display: flex; gap: 8px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 8px 16px; border-radius: 10px;
  font: 500 14px/1.4 var(--font); cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s, box-shadow .2s, background .2s, border-color .2s;
}
.btn.lg { padding: 13px 22px; font-size: 15px; border-radius: 12px; }
.btn.solid {
  color: #04101c; font-weight: 600;
  background: var(--grad);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, .12) inset, 0 8px 28px -8px rgba(34, 211, 238, .55);
}
.btn.solid:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(255, 255, 255, .2) inset, 0 12px 34px -8px rgba(34, 211, 238, .8); }
.btn.ghost { color: var(--text); background: var(--panel); border-color: var(--line); }
.btn.ghost:hover { background: var(--panel-hi); border-color: var(--line-hi); }
.btn:active { transform: translateY(0) scale(.98); }
[dir="rtl"] .btn svg { transform: scaleX(-1); }

/* ---------- shared ---------- */

main, .foot { max-width: var(--wrap); margin-inline: auto; padding-inline: 20px; }
.section { padding-block: 96px 8px; }
.secHead { max-width: 640px; margin-bottom: 44px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--cyan);
}
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(52, 211, 153, .6); animation: ping 2s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 9px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }
h1, h2, h3 { font-family: var(--font-brand); letter-spacing: -.02em; line-height: 1.12; }
h2 { font-size: clamp(28px, 4vw, 42px); margin-top: 14px; font-weight: 600; }
.lead { color: var(--muted); font-size: clamp(16px, 1.6vw, 18px); max-width: 56ch; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; -webkit-text-fill-color: transparent; }

/* ---------- hero ---------- */

.hero {
  display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: 56px; align-items: center;
  padding-block: 76px 40px;
}
.hero h1 { font-size: clamp(38px, 5.6vw, 66px); font-weight: 700; margin-block: 22px 20px; }
.heroBtns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.heroBtns.center { justify-content: center; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }
.chips li {
  padding: 6px 12px; border-radius: 999px; font: 12px/1 var(--mono);
  color: var(--muted); border: 1px solid var(--line); background: var(--panel);
}

/* The viewport: a framed "camera" the canvas draws into. */
.viewport {
  position: relative; border-radius: 18px; overflow: hidden;
  border: 1px solid var(--line-hi);
  background: linear-gradient(180deg, rgba(14, 22, 42, .9), rgba(6, 10, 20, .95));
  box-shadow: 0 30px 80px -20px rgba(37, 99, 235, .45), 0 0 0 1px rgba(255, 255, 255, .03) inset;
  animation: float 9s ease-in-out infinite;
}
@keyframes float { 50% { transform: translateY(-8px); } }
.vpBar, .vpFoot {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 14px; font: 12px/1 var(--mono); color: var(--muted);
  background: rgba(255, 255, 255, .03);
}
.vpBar { border-bottom: 1px solid var(--line); }
.vpFoot { border-top: 1px solid var(--line); }
.vpFoot b { color: var(--cyan); font-weight: 500; margin-inline-start: 4px; font-variant-numeric: tabular-nums; }
.dots { display: inline-flex; gap: 6px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .16); }
.dots i:first-child { background: #ff5f57; } .dots i:nth-child(2) { background: #febc2e; } .dots i:nth-child(3) { background: #28c840; }
.rec { display: inline-flex; align-items: center; gap: 6px; color: #ff6b6b; letter-spacing: .1em; }
.rec i { width: 7px; height: 7px; border-radius: 50%; background: currentColor; animation: blink 1.2s steps(2) infinite; }
@keyframes blink { 50% { opacity: .15; } }

.vpStage { position: relative; aspect-ratio: 16 / 11; }
.vpStage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.corner { position: absolute; width: 22px; height: 22px; border: 2px solid var(--cyan); opacity: .8; }
.corner.tl { top: 10px; inset-inline-start: 10px; border-width: 2px 0 0 2px; }
.corner.tr { top: 10px; inset-inline-end: 10px; border-width: 2px 2px 0 0; }
.corner.bl { bottom: 10px; inset-inline-start: 10px; border-width: 0 0 2px 2px; }
.corner.br { bottom: 10px; inset-inline-end: 10px; border-width: 0 2px 2px 0; }
.scan {
  position: absolute; inset-inline: 0; height: 90px; top: -90px; pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(34, 211, 238, .16) 70%, rgba(34, 211, 238, .5));
  border-bottom: 1px solid rgba(34, 211, 238, .8);
  animation: sweep 4.8s linear infinite;
}
@keyframes sweep { to { transform: translateY(calc(11 / 16 * 100cqw + 90px)); } }
.vpStage { container-type: inline-size; }

/* ---------- stats strip ---------- */

.strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin-block: 24px 0; border: 1px solid var(--line); border-radius: 16px;
  background: var(--panel); overflow: hidden;
}
.strip div { padding: 22px 24px; display: flex; flex-direction: column; gap: 4px; border-inline-end: 1px solid var(--line); }
.strip div:last-child { border-inline-end: 0; }
.strip b { font: 700 30px/1.1 var(--font-brand); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; -webkit-text-fill-color: transparent; }
.strip span { color: var(--muted); font-size: 13px; }

/* ---------- bento ---------- */

.bento { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.card {
  position: relative; overflow: hidden;
  padding: 26px; border-radius: 18px;
  background: linear-gradient(180deg, var(--panel-hi), var(--panel));
  border: 1px solid var(--line);
  transition: border-color .25s, transform .25s, box-shadow .25s;
}
.card::before {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(34, 211, 238, .13), transparent 60%);
}
.card:hover { border-color: var(--line-hi); transform: translateY(-3px); box-shadow: 0 20px 50px -24px rgba(34, 211, 238, .45); }
.card:hover::before { opacity: 1; }
.card.span2 { grid-column: span 2; }
.card h3 { font-size: 19px; font-weight: 600; margin-block: 18px 8px; }
.card p { color: var(--muted); font-size: 14.5px; }
.ico {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(34, 211, 238, .09); border: 1px solid rgba(34, 211, 238, .28);
}
.ico svg { width: 22px; height: 22px; fill: none; stroke: var(--cyan); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.miniDraw { position: relative; height: 92px; margin-top: 22px; border-radius: 12px; border: 1px dashed var(--line-hi); background: repeating-linear-gradient(45deg, transparent 0 10px, rgba(255, 255, 255, .02) 10px 20px); }
.mb { position: absolute; border: 1.5px solid var(--c); background: color-mix(in srgb, var(--c) 14%, transparent); border-radius: 3px; animation: boxIn 4s ease-in-out infinite; }
.mb em { position: absolute; top: -17px; inset-inline-start: -1px; padding: 2px 6px; font: normal 10px/1.3 var(--mono); color: #04101c; background: var(--c); border-radius: 3px 3px 3px 0; white-space: nowrap; }
.mb.b1 { --c: #22d3ee; left: 6%; top: 34%; width: 28%; height: 50%; }
.mb.b2 { --c: #34d399; left: 44%; top: 26%; width: 15%; height: 58%; animation-delay: .5s; }
.mb.b3 { --c: #a78bfa; left: 68%; top: 40%; width: 24%; height: 44%; animation-delay: 1s; }
@keyframes boxIn { 0%, 12% { opacity: 0; transform: scale(.85); } 25%, 85% { opacity: 1; transform: none; } 100% { opacity: 0; } }

.miniBars { display: flex; align-items: flex-end; gap: 8px; height: 84px; margin-top: 22px; }
.miniBars i { flex: 1; height: var(--h); border-radius: 5px 5px 2px 2px; background: linear-gradient(180deg, var(--cyan), rgba(59, 130, 246, .25)); transform-origin: bottom; animation: grow 3.6s ease-in-out infinite; }
.miniBars i:nth-child(odd) { animation-delay: .3s; }
@keyframes grow { 0%, 100% { transform: scaleY(.55); } 50% { transform: scaleY(1); } }

/* ---------- pipeline ---------- */

.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; position: relative; counter-reset: s; }
.steps::before {
  content: ''; position: absolute; top: 22px; inset-inline: 6%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan) 20%, var(--green) 80%, transparent); opacity: .5;
}
.steps li { position: relative; padding-top: 0; }
.steps .n {
  position: relative; display: grid; place-items: center; width: 44px; height: 44px; margin-bottom: 20px;
  border-radius: 50%; background: var(--bg-2); border: 1px solid var(--line-hi);
  font: 600 13px/1 var(--mono); color: var(--cyan);
  box-shadow: 0 0 0 6px var(--bg), 0 0 24px -4px rgba(34, 211, 238, .5);
}
.steps h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.steps p { color: var(--muted); font-size: 14px; }

/* ---------- api ---------- */

.apiSec { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 48px; align-items: center; }
.apiSec .heroBtns { margin-top: 26px; }
.apiSec .lead { margin-top: 16px; }
.term { border-radius: 16px; overflow: hidden; border: 1px solid var(--line-hi); background: #060b16; box-shadow: 0 30px 70px -30px rgba(37, 99, 235, .5); direction: ltr; }
.term pre { margin: 0; padding: 20px 22px; overflow-x: auto; font: 13px/1.75 var(--mono); color: #c7d2ee; }
.term .c { color: #5c6b8c; } .term .p { color: var(--green); } .term .s { color: #fbbf24; } .term .o { color: var(--cyan); }
.cur { display: inline-block; width: 8px; height: 15px; vertical-align: -2px; background: var(--cyan); animation: blink 1s steps(2) infinite; }

/* ---------- cta + footer ---------- */

.cta {
  position: relative; text-align: center; margin-block: 110px 0; padding: 64px 24px;
  border-radius: 24px; border: 1px solid var(--line-hi); overflow: hidden;
  background: radial-gradient(600px 240px at 50% 0%, rgba(34, 211, 238, .18), transparent 70%), var(--panel);
}
.cta h2 { margin: 0 0 10px; }
.cta p { color: var(--muted); }
.foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 44px 40px; margin-top: 40px; color: var(--muted); font-size: 14px; }
.foot .word { font-size: 18px; }
.foot nav { display: flex; gap: 22px; }
.foot nav a:hover { color: var(--text); }

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 48px 24px; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; gap: 26px; }
  .steps::before { top: 0; bottom: 0; inset-inline: auto; inset-inline-start: 22px; width: 1px; height: auto; }
  .steps li { display: grid; grid-template-columns: 44px 1fr; column-gap: 18px; }
  .steps .n { grid-row: span 2; margin: 0; }
  .apiSec { grid-template-columns: 1fr; }
  .strip { grid-template-columns: repeat(2, 1fr); }
  .strip div:nth-child(2) { border-inline-end: 0; }
  .strip div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 620px) {
  .navLinks { display: none; }
  .bento { grid-template-columns: 1fr; }
  .card.span2 { grid-column: auto; }
  .section { padding-block-start: 72px; }
  .btn.lg { width: 100%; }
  .heroBtns { width: 100%; }
}

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