/* Data Driven — Site styles, F1-aesthetic additions */

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg-canvas);
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: var(--t-md); line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.wrap {
  width: 100%; max-width: var(--maxw);
  margin-left: auto; margin-right: auto;
  padding-left: var(--gutter); padding-right: var(--gutter);
}

.section { padding: var(--section-y) 0; }
.section-loose { padding: var(--section-y-loose) 0; }
.section-tight  { padding: var(--section-y-tight) 0; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 60;
  background: rgba(11, 15, 20, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-1);
  height: 56px;
}
.nav.scrolled { border-bottom-color: var(--border-2); }
.nav-inner {
  display: flex; align-items: center; width: 100%;
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter);
  height: 56px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 16px; letter-spacing: -0.01em; color: var(--fg-1);
}
.nav-logo .os { color: var(--dd-blue); }
.nav-links {
  display: flex; gap: 28px; margin-left: 48px;
}
.nav-links a {
  font-size: 14px; color: var(--fg-2);
  transition: color var(--dur-2) var(--ease-out);
  position: relative;
}
.nav-links a:hover { color: var(--fg-1); }
.nav-links a.active { color: var(--fg-1); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -22px;
  height: 2px; background: var(--dd-blue);
}
.nav-cta {
  margin-left: auto; display: flex; gap: 12px; align-items: center;
}

/* ---------- Mobile nav toggle ---------- */
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 40px; height: 40px;
  background: transparent; border: 1px solid var(--border-1);
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  position: relative;
  align-items: center; justify-content: center;
  transition: border-color var(--dur-2) var(--ease-out), background var(--dur-2) var(--ease-out);
}
.nav-toggle:hover { border-color: var(--border-2); background: rgba(255,255,255,0.02); }
.nav-toggle:focus-visible { outline: 2px solid var(--dd-blue); outline-offset: 2px; }
.nav-toggle-bars {
  position: relative;
  width: 18px; height: 12px;
  display: block;
}
.nav-toggle-bars span {
  position: absolute; left: 0; right: 0;
  height: 1.5px; background: var(--fg-1);
  border-radius: 2px;
  transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-1) var(--ease-out), top var(--dur-2) var(--ease-out);
}
.nav-toggle-bars span:nth-child(1) { top: 0; }
.nav-toggle-bars span:nth-child(2) { top: 5px; }
.nav-toggle-bars span:nth-child(3) { top: 10px; }
.nav[data-mobile-open="true"] .nav-toggle-bars span:nth-child(1) { top: 5px; transform: rotate(45deg); }
.nav[data-mobile-open="true"] .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.nav[data-mobile-open="true"] .nav-toggle-bars span:nth-child(3) { top: 5px; transform: rotate(-45deg); }

/* Mobile drawer: hidden until nav-toggle is opened */
@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; }

  .nav-links,
  .nav-cta {
    position: fixed;
    left: 0; right: 0;
    background: rgba(11, 15, 20, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-1);
    pointer-events: none;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
    z-index: 59;
  }
  .nav-links {
    top: 56px;
    flex-direction: column;
    gap: 0;
    margin-left: 0;
    padding: 12px var(--gutter);
  }
  .nav-links a {
    font-size: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-1);
  }
  .nav-links a:last-child { border-bottom: 0; }
  .nav-links a.active::after { display: none; }

  .nav-cta {
    /* Pushed below .nav-links; height-based so drawers stack */
    top: 56px;
    flex-direction: column-reverse;
    gap: 10px;
    margin-left: 0;
    padding: 16px var(--gutter) 22px;
    align-items: stretch;
    transform: translateY(-8px);
  }
  .nav-cta .btn { width: 100%; text-align: center; justify-content: center; }
  .nav-cta .nav-status { justify-content: center; padding: 6px 0; }
  .nav-cta > a:not(.btn) {
    font-size: 14px; color: var(--fg-2); text-align: center; padding: 10px 0;
    border-top: 1px solid var(--border-1);
  }

  .nav[data-mobile-open="true"] .nav-links,
  .nav[data-mobile-open="true"] .nav-cta {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  /* Stack cta below links when open. nav-cta sits ~links height below the nav. */
  .nav[data-mobile-open="true"] .nav-cta {
    top: calc(56px + var(--mobile-links-height, 220px));
  }

  /* Backdrop dim under the drawer */
  .nav::after {
    content: "";
    position: fixed; left: 0; right: 0; top: 56px; bottom: 0;
    background: rgba(11, 15, 20, 0.65);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-2) var(--ease-out);
    z-index: 58;
  }
  .nav[data-mobile-open="true"]::after {
    opacity: 1;
    pointer-events: auto;
  }

  /* Prevent body scroll when drawer is open */
  body.nav-locked { overflow: hidden; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; font-size: 14px; font-weight: 600;
  border-radius: 8px; cursor: pointer; border: 1px solid transparent;
  transition: background var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out), color var(--dur-2) var(--ease-out), transform var(--dur-1) var(--ease-snap);
  font-family: var(--font-sans);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--dd-blue); color: #fff; }
.btn-primary:hover { background: var(--dd-blue-600); }
.btn-secondary { background: transparent; color: var(--fg-1); border-color: var(--border-2); }
.btn-secondary:hover { border-color: var(--fg-2); }
.btn-ghost { background: transparent; color: var(--fg-1); }
.btn-ghost:hover { background: rgba(255,255,255,0.04); }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-lg { padding: 16px 26px; font-size: 16px; }

/* ---------- Telemetry ---------- */
.telemetry {
  display: flex; align-items: center; gap: 18px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-3);
}
.telemetry .live { color: var(--dd-blue-400); display: inline-flex; align-items: center; gap: 8px; }
.live-dot {
  width: 6px; height: 6px; background: var(--dd-blue); border-radius: 50%;
  animation: pulse 1.6s var(--ease-out) infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.85); }
}
[data-telemetry="off"] .telemetry,
[data-telemetry="off"] .telemetry-strip-top { display: none !important; }

/* Top telemetry strip — pit-wall HUD, only visible at heavy intensity */
.telemetry-strip-top {
  height: 28px; border-bottom: 1px solid var(--border-1);
  background: var(--dd-ink-2);
  position: fixed; top: 0; left: 0; right: 0; z-index: 70;
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-3);
  display: none;
  overflow: hidden;
}
[data-telemetry="heavy"] .telemetry-strip-top { display: flex; }
[data-telemetry="heavy"] .nav { top: 0; }
[data-telemetry="heavy"] body { padding-top: 28px; }
.telemetry-strip-top .marquee {
  display: flex; gap: 48px; padding: 0 var(--gutter);
  white-space: nowrap; align-items: center;
  animation: marquee 60s linear infinite;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.telemetry-strip-top span.t-good { color: var(--status-good); }
.telemetry-strip-top span.t-warn { color: var(--status-warn); }
.telemetry-strip-top span.t-bad  { color: var(--status-bad); }
.telemetry-strip-top span.t-blue { color: var(--dd-blue-400); }

/* Subtle telemetry: nav has a small status indicator */
[data-telemetry="subtle"] .nav-status,
[data-telemetry="heavy"] .nav-status { display: inline-flex; }
.nav-status {
  display: none; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-3);
}


/* ---------- Eyebrow ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--dd-blue-400);
  display: inline-flex; align-items: center; gap: 8px;
}
.eyebrow::before {
  content: ""; width: 5px; height: 5px;
  background: var(--dd-blue); border-radius: 50%;
  box-shadow: 0 0 8px rgba(43,131,247,0.6);
}
.seg-marker {
  font-family: var(--font-mono); font-size: 11px;
  color: var(--fg-4); letter-spacing: 0.12em;
}

/* ---------- Hero background ---------- */
.hero-bg {
  position: relative;
  background:
    radial-gradient(ellipse at 30% 0%, rgba(43,131,247,0.08), transparent 55%),
    radial-gradient(ellipse at 80% 20%, rgba(43,131,247,0.04), transparent 50%),
    var(--bg-canvas);
  overflow: hidden;
}
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 30%, transparent 75%);
}
.hero-variant { position: relative; }

/* Hero variant gating — only the selected hero shows based on body[data-hero] */
body[data-hero="A"] .hero-B,
body[data-hero="A"] .hero-C { display: none; }
body[data-hero="B"] .hero-A,
body[data-hero="B"] .hero-C { display: none; }
body[data-hero="C"] .hero-A,
body[data-hero="C"] .hero-B { display: none; }

/* ---------- Cards / hairline ---------- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-1);
  border-radius: 12px;
  padding: 32px;
}
.card.stripe-accent {
  position: relative;
  overflow: hidden;
}
.card.stripe-accent::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--dd-blue) 0%, var(--dd-blue) 32%, transparent 32%);
}
.hairline {
  border: 0;
  height: 1px;
  background: var(--border-1);
  margin: 16px 0;
}

/* ---------- Race stripe ---------- */
.race-stripe {
  height: 2px;
  margin-top: 40px;
  background: linear-gradient(90deg, var(--dd-blue) 0%, var(--dd-blue) 12%, transparent 12% 16%, var(--dd-blue) 16% 18%, transparent 18%);
  opacity: 0.7;
}

/* ---------- Settle entrance (used by Hero) ---------- */
.settle {
  opacity: 0;
  transform: translateY(8px);
  animation: settle 600ms var(--ease-out) forwards;
}
.settle.d1 { animation-delay: 80ms; }
.settle.d2 { animation-delay: 180ms; }
.settle.d3 { animation-delay: 280ms; }
.settle.d4 { animation-delay: 380ms; }
@keyframes settle {
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-1);
  padding: 64px 0 32px;
  margin-top: 80px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-1);
}
.footer h5 {
  font-family: var(--font-mono);
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 16px;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer ul a {
  font-size: 14px; color: var(--fg-2);
  transition: color var(--dur-2) var(--ease-out);
}
.footer ul a:hover { color: var(--fg-1); }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
  padding-top: 24px;
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--fg-3);
}
.footer-socials {
  display: flex; gap: 14px; align-items: center;
}
.footer-socials a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  color: var(--fg-3);
  border: 1px solid var(--border-1);
  border-radius: 8px;
  transition: color var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out), background var(--dur-2) var(--ease-out);
}
.footer-socials a:hover { color: var(--fg-1); border-color: var(--border-2); background: rgba(255,255,255,0.03); }
.footer-socials svg { width: 14px; height: 14px; }
.legal-links { display: flex; gap: 18px; }
.legal-links a { color: var(--fg-3); transition: color var(--dur-2) var(--ease-out); }
.legal-links a:hover { color: var(--fg-1); }

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}


/* ---------- Logo strip / brand marquee ---------- */
.logo-strip-mask {
  position: relative;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
}
.logo-strip {
  display: flex; align-items: center; gap: 16px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 13px; font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--fg-2);
  width: max-content;
  animation: brand-marquee 40s linear infinite;
  will-change: transform;
}
.logo-strip > span { flex-shrink: 0; }
@keyframes brand-marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.logo-strip-mask:hover .logo-strip { animation-play-state: paused; }
@media (prefers-reduced-motion: reduce) {
  .logo-strip { animation: none; transform: translateX(0); }
}

/* ---------- Decision cards ---------- */
.dcard {
  background: var(--bg-surface);
  border: 1px solid var(--border-1);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  overflow: hidden;
  transition: border-color 200ms var(--ease-out);
}
.dcard::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--dd-blue) 0%, var(--dd-blue) 32%, transparent 32%);
}
.dcard.active {
  border-color: rgba(43, 131, 247, 0.35);
  background: rgba(43, 131, 247, 0.04);
}
.dcard.active::before {
  background: var(--dd-blue);
}
.dcard-overline {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}

/* ---------- Tabular / count number styling ---------- */
.count {
  font-variant-numeric: tabular-nums;
}

/* ---------- Responsive: homepage sections ---------- */
@media (max-width: 880px) {
  .hero-B .wrap > div[style*="grid"] {
    display: flex !important;
    flex-direction: column;
    gap: 40px !important;
  }
}
@media (max-width: 768px) {
  [style*="grid-template-columns: repeat(3"] {
    grid-template-columns: 1fr !important;
  }
  [style*="grid-template-columns: repeat(2"] {
    grid-template-columns: 1fr !important;
  }
  [style*="grid-template-columns: 1.1fr 1fr"],
  [style*="grid-template-columns: 1.4fr 1fr"],
  [style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
  [style*="grid-template-columns: 120px 1fr 1fr 64px"] {
    grid-template-columns: 1fr !important;
    gap: 8px !important;
  }
}