/* 0BZ — R8 S tronic telemetry theme (acid trace on carbon; distinct from DSG.LAB) */
:root {
  --void: #050608;
  --carbon: #0c0e12;
  --panel: #12151c;
  --grid-line: rgba(200, 255, 61, 0.06);
  --text: #e8f0f8;
  --muted: #7a8799;
  --trace: #c8ff3d;
  --trace-dim: rgba(200, 255, 61, 0.22);
  --cyan: #2ee6d6;
  --font-display: "Chakra Petch", system-ui, sans-serif;
  --font-body: "Exo 2", system-ui, sans-serif;
  --font-mono: "Share Tech Mono", ui-monospace, monospace;
  --r: 4px;
  --r-lg: 14px;
  --header-h: 64px;
  --safe-top: env(safe-area-inset-top, 0px);
  --page-max: 760px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.obz-site {
  margin: 0;
  font-family: var(--font-body);
  background: var(--void);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: clip;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  position: fixed;
  top: var(--safe-top);
  left: 8px;
  z-index: 10000;
  padding: 0.55rem 1rem;
  background: var(--trace);
  color: #050608;
  font-weight: 800;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.2s;
}

.skip-link:focus {
  clip-path: inset(0 0 0 0);
  outline: 2px solid var(--cyan);
}

:focus-visible {
  outline: 2px solid var(--trace);
  outline-offset: 3px;
}

.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.13) 2px,
    rgba(0, 0, 0, 0.13) 3px
  );
  opacity: 0.35;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  min-height: var(--header-h);
  padding: var(--safe-top) 1rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: linear-gradient(180deg, rgba(5, 6, 8, 0.97) 45%, transparent);
  border-bottom: 1px solid transparent;
  transition: background 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.site-header.scrolled {
  background: rgba(5, 6, 8, 0.94);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--grid-line);
  box-shadow: 0 0 40px var(--trace-dim);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-mark {
  flex-shrink: 0;
  border-radius: var(--r);
  box-shadow: 0 0 20px var(--trace-dim);
}

.logo-word {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.12em;
  color: var(--text);
}

.logo-word .accent {
  color: var(--trace);
}

.nav--desktop {
  display: none;
  gap: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

@media (min-width: 900px) {
  .nav--desktop {
    display: flex;
  }
}

.nav--desktop a:hover {
  color: var(--trace);
  text-shadow: 0 0 12px var(--trace-dim);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-cta--desktop {
  display: none;
  padding: 0.5rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--void);
  background: var(--trace);
  border-radius: var(--r);
  box-shadow: 0 0 24px var(--trace-dim);
}

@media (min-width: 900px) {
  .nav-cta--desktop {
    display: inline-flex;
  }
}

.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--grid-line);
  border-radius: var(--r);
  background: var(--carbon);
  cursor: pointer;
}

@media (min-width: 900px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle-bars {
  width: 18px;
  height: 2px;
  background: var(--trace);
  box-shadow: 0 -5px 0 var(--trace), 0 5px 0 var(--trace);
}

.mobile-menu[hidden] {
  display: none !important;
}

.mobile-menu:not([hidden]) {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 200;
}

.mobile-menu-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
}

.mobile-menu-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(100%, 300px);
  height: 100%;
  background: var(--panel);
  border-left: 1px solid var(--trace-dim);
  padding: calc(var(--header-h) + var(--safe-top) + 1rem) 1.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.mobile-menu-panel a:hover {
  color: var(--trace);
}

.mobile-menu-cta {
  margin-top: 1rem;
  padding: 0.85rem;
  text-align: center;
  background: var(--trace);
  color: var(--void) !important;
  border-radius: var(--r);
}

body.menu-open {
  overflow: hidden;
}

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  min-height: 92dvh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + var(--safe-top) + 2rem) 1.25rem 3.5rem;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    linear-gradient(var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 20%, transparent 70%);
}

.hero-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 80% 20%, var(--trace-dim) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(46, 230, 214, 0.08) 0%, transparent 50%);
}

.hero-trace {
  position: absolute;
  top: 18%;
  left: -5%;
  width: 110%;
  height: 120px;
  pointer-events: none;
  border: 1px solid rgba(200, 255, 61, 0.15);
  border-radius: 50%;
  transform: rotate(-8deg);
  box-shadow: 0 0 60px var(--trace-dim);
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 1rem;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 6vw, 2.85rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

.hero-title .code {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 8vw, 3.5rem);
  letter-spacing: 0.08em;
  color: var(--trace);
  text-shadow: 0 0 40px var(--trace-dim);
}

.hero-title .sub {
  display: block;
  font-size: 0.42em;
  font-weight: 600;
  letter-spacing: 0.35em;
  color: var(--muted);
  margin-top: 0.35rem;
}

.hero-lead {
  margin: 0 0 1.75rem;
  font-size: 1rem;
  color: var(--muted);
  max-width: 42ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--trace);
  color: var(--void);
  border-radius: var(--r);
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 28px var(--trace-dim);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 48px var(--trace-dim);
}

.btn-ghost {
  display: inline-flex;
  padding: 0.8rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(46, 230, 214, 0.35);
  border-radius: var(--r);
  transition: border-color 0.2s, color 0.2s;
}

.btn-ghost:hover {
  border-color: var(--trace);
  color: var(--trace);
}

/* Sections */
.section {
  position: relative;
  z-index: 1;
  padding: 3.25rem 1.25rem;
  border-top: 1px solid var(--grid-line);
}

.section-inner {
  max-width: var(--page-max);
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--trace);
  margin: 0 0 0.5rem;
}

.section h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.2rem, 3.5vw, 1.55rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 1rem;
}

.section p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0;
}

.pill {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--grid-line);
  border-radius: 999px;
  color: var(--cyan);
}

.timeline {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  border-left: 2px solid var(--trace-dim);
}

.timeline li {
  position: relative;
  padding: 0.85rem 0 0.85rem 1.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 1.1rem;
  width: 8px;
  height: 8px;
  background: var(--trace);
  border-radius: 1px;
  transform: rotate(45deg);
  box-shadow: 0 0 12px var(--trace-dim);
}

.timeline strong {
  color: var(--text);
}

.callout {
  margin-top: 1.5rem;
  padding: 1.2rem 1.35rem;
  background: var(--carbon);
  border: 1px solid var(--grid-line);
  border-radius: var(--r-lg);
  font-size: 0.88rem;
  color: var(--muted);
}

.callout strong {
  color: var(--trace);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.faq-list {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.faq-item {
  border-bottom: 1px solid var(--grid-line);
}

.faq-item summary {
  cursor: pointer;
  padding: 1rem 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text);
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-answer {
  padding: 0 0 1.1rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.faq-answer p {
  margin: 0;
}

.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.35rem;
}

.site-footer {
  position: relative;
  z-index: 1;
  padding: 2rem 1.25rem calc(2rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--grid-line);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.site-footer a {
  color: var(--trace);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.site-footer-legal {
  margin: 0.75rem 0 0;
  font-size: 0.62rem;
  opacity: 0.9;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn-primary:hover {
    transform: none;
  }
}