/* Sensor Forensics Lab landing page. The lab's own instrument-panel palette: graphite with a cold blue cast,
   one amber for the cue, blue for the physics and lilac for the people. */
:root {
  color-scheme: dark;
  --ink-0: #10151b;
  --ink-1: #171e26;
  --ink-2: #1f2832;
  --rule: #2e3a47;
  --rule-strong: #445466;
  --text: #e8ecf0;
  --text-2: #a3afbb;
  --text-3: #848f9c;
  --phys: #63b6d9;
  --testi: #c7a4ec;
  --cue: #f2b84b;
  --ok: #7cbf8e;
  --display: "Barlow Condensed", "Bahnschrift", "Arial Narrow", sans-serif;
  --sans: "Barlow", "Bahnschrift", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", "Cascadia Mono", Consolas, ui-monospace, monospace;
  --gutter: clamp(16px, 4vw, 48px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--ink-0);
  background-image:
    linear-gradient(rgba(68, 84, 102, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(68, 84, 102, 0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  color: var(--text);
  font: 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--phys); text-underline-offset: 3px; }
a:hover { color: var(--cue); }
h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.05; margin: 0 0 0.55em; letter-spacing: 0.01em; }
h1 { font-size: clamp(3rem, 7.5vw, 5.6rem); font-weight: 700; text-transform: uppercase; letter-spacing: 0.02em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3 { font-size: 1.45rem; }
p { margin: 0 0 1em; }
img, video { max-width: 100%; }

/* top bar */
.bar {
  position: fixed; inset: 0 0 auto 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.7rem var(--gutter);
  transition: background 0.25s, border-color 0.25s;
  border-bottom: 1px solid transparent;
}
.bar.solid { background: rgba(16, 21, 27, 0.93); border-color: var(--rule); backdrop-filter: blur(8px); }
.brand {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font: 600 1.2rem/1 var(--display); letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--text); text-decoration: none; white-space: nowrap;
}
.reticle {
  width: 18px; height: 18px; border: 1.5px solid var(--cue); border-radius: 50%; position: relative; flex: none;
}
.reticle::before, .reticle::after { content: ""; position: absolute; background: var(--cue); }
.reticle::before { left: 50%; top: -5px; bottom: -5px; width: 1.5px; transform: translateX(-50%); }
.reticle::after { top: 50%; left: -5px; right: -5px; height: 1.5px; transform: translateY(-50%); }
.bar nav { display: flex; align-items: center; gap: 1.4rem; font-size: 0.92rem; }
.bar nav a { color: var(--text-2); text-decoration: none; }
.bar nav a:hover { color: var(--text); }
.bar nav a.cta { color: var(--ink-0); background: var(--cue); padding: 0.35rem 0.95rem; border-radius: 3px; font-weight: 600; }
.bar nav a.cta:hover { background: #f6cb74; color: var(--ink-0); }
@media (max-width: 820px) { .bar nav a:not(.cta) { display: none; } }
@media (max-width: 380px) { .brand { font-size: 1rem; } }

/* buttons */
.buttons { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.6rem 0 0.8rem; }
.button {
  display: inline-block; padding: 0.7rem 1.3rem; border-radius: 3px;
  border: 1px solid var(--rule-strong); color: var(--text); text-decoration: none; font-weight: 500;
}
.button:hover { border-color: var(--phys); color: var(--text); background: rgba(99, 182, 217, 0.08); }
.button.primary { background: var(--cue); border-color: var(--cue); color: var(--ink-0); font-weight: 600; }
.button.primary:hover { background: #f6cb74; border-color: #f6cb74; color: var(--ink-0); }
.button.quiet { border-color: var(--rule); color: var(--text-2); }
.button.quiet:hover { color: var(--text); border-color: var(--text-3); background: none; }

/* hero */
.hero {
  min-height: 100vh;
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(1.5rem, 4vw, 4rem); align-items: center;
  padding: 6rem var(--gutter) 4rem; max-width: 1500px; margin: 0 auto;
}
.pill {
  display: inline-flex; align-items: center; gap: 0.5rem; margin-bottom: 1.3rem;
  font: 500 0.78rem/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ok); border: 1px solid rgba(124, 191, 142, 0.45); border-radius: 99px; padding: 0.45rem 0.8rem;
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 10px var(--ok); }
.pitch { font-size: 1.18rem; color: var(--text); }
.sub { color: var(--text-2); }
.fine { color: var(--text-3); font-size: 0.85rem; }
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: 5.5rem; }
}

/* a framed instrument screen for every clip */
.screen { margin: 0; position: relative; }
.screen video, .screen img {
  display: block; width: 100%; height: auto; background: var(--ink-1);
  border: 1px solid var(--rule); border-radius: 4px;
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.85);
}
.screen figcaption { margin-top: 0.7rem; color: var(--text-3); font-size: 0.84rem; font-family: var(--mono); line-height: 1.5; }
.hero-screen::before, .hero-screen::after {
  content: ""; position: absolute; width: 22px; height: 22px; border-color: var(--cue); border-style: solid; pointer-events: none;
}
.hero-screen::before { top: -9px; left: -9px; border-width: 2px 0 0 2px; }
.hero-screen::after { top: -9px; right: -9px; border-width: 2px 2px 0 0; }

/* premise */
.premise { max-width: 48rem; margin: 2rem auto 4.5rem; padding: 0 var(--gutter); }
.premise p { font-size: clamp(1.2rem, 2.1vw, 1.45rem); line-height: 1.55; color: var(--text); }
.premise em { color: var(--cue); font-style: normal; }

/* the six */
.suspects { max-width: 1100px; margin: 0 auto 7rem; padding: 0 var(--gutter); }
.six {
  list-style: none; padding: 0; margin: 1.5rem 0 1.2rem;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 0.6rem;
}
.six li { display: flex; align-items: baseline; gap: 0.9rem; background: var(--ink-1); border: 1px solid var(--rule); border-left: 3px solid var(--phys); border-radius: 3px; padding: 0.85rem 1rem; }
.six b { font: 500 0.9rem/1 var(--mono); color: var(--phys); min-width: 4.6rem; }
.six span { color: var(--text); }
.note { color: var(--text-2); font-size: 0.95rem; max-width: 48rem; }

/* the five views */
.chapter {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center;
  max-width: 1400px; margin: 0 auto 6.5rem; padding: 0 var(--gutter);
}
.chapter.flip { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); }
.chapter.flip .screen { order: 2; }
.kicker { font: 500 0.8rem/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--cue); margin-bottom: 0.9rem; }
.copy .data { color: var(--text-2); font-size: 0.86rem; border-left: 2px solid var(--testi); padding-left: 0.8rem; }
@media (max-width: 900px) {
  .chapter, .chapter.flip { grid-template-columns: 1fr; margin-bottom: 4.5rem; }
  .chapter.flip .screen { order: 0; }
}

/* findings, checks, how it was made */
.found, .checked, .made, .final { max-width: 1200px; margin: 0 auto 6rem; padding: 0 var(--gutter); }
.found, .checked, .made { border-top: 1px solid var(--rule); padding-top: 5rem; }
.lead { font-size: 1.12rem; max-width: 52rem; color: var(--text); }
.cases { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 330px), 1fr)); gap: 1.2rem; margin-top: 2.5rem; }
.case { background: var(--ink-1); border: 1px solid var(--rule); border-radius: 4px; padding: 1rem 1rem 1.2rem; display: flex; flex-direction: column; }
.case .screen { margin-bottom: 1rem; }
.case .screen video, .case .screen img { box-shadow: none; aspect-ratio: 16 / 10; object-fit: cover; object-position: left top; }
.case h3 { margin-bottom: 0.5rem; }
.case h3 small { font: 400 0.8rem/1 var(--mono); color: var(--text-3); margin-left: 0.4rem; letter-spacing: 0.04em; }
.case p { color: var(--text-2); font-size: 0.97rem; }
.settle { margin-top: auto; margin-bottom: 0; padding: 0.7rem 0.8rem; border: 1px dashed rgba(242, 184, 75, 0.5); border-radius: 3px; color: var(--text) !important; }
.settle b { display: block; font: 500 0.72rem/1.2 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--cue); margin-bottom: 0.3rem; }
.tally { list-style: none; padding: 0; margin: auto 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
.tally li { background: var(--ink-2); border-radius: 3px; padding: 0.7rem; text-align: center; font: 400 0.78rem/1.3 var(--mono); color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; }
.tally b { display: block; font: 600 2rem/1.1 var(--display); color: var(--text); letter-spacing: 0; }

.facts { list-style: none; padding: 0; margin: 2.5rem 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 1rem; }
.facts li { background: var(--ink-1); border: 1px solid var(--rule); border-top: 2px solid var(--ok); border-radius: 3px; padding: 1.3rem 1.4rem; }
.facts b { display: block; font: 600 2.4rem/1.05 var(--display); color: var(--text); margin-bottom: 0.5rem; }
.facts span { color: var(--text-2); font-size: 0.93rem; }
.checked > p:last-child { color: var(--text-2); max-width: 52rem; }

.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 2rem; margin-top: 2rem; }
.cols h3 { color: var(--phys); }
.cols p { color: var(--text-2); }
.who { margin-top: 2rem; color: var(--text-2); font-size: 0.93rem; max-width: 52rem; }

.final { text-align: center; padding-top: 1rem; }
.final .buttons { justify-content: center; }

footer { border-top: 1px solid var(--rule); padding: 2rem var(--gutter) 3rem; color: var(--text-3); font-size: 0.82rem; }
footer p { max-width: 1200px; margin: 0 auto; }