/* ============================================================
   NOBL — BASE
   Reset, typography primitives, layout helpers, reveal system.
   ============================================================ */

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--t-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

img, svg, canvas { display: block; max-width: 100%; }
img { height: auto; }

a { color: var(--accent); text-decoration: none; transition: color var(--d-fast); }
a:hover { color: var(--text); }

button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Screen-reader only */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Skip link */
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: var(--r-button);
  font-size: var(--t-btn-sm); font-weight: 600;
  transition: top var(--d-btn);
}
.skip-link:focus { top: 12px; color: var(--bg); }


/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--page-pad);
}

.section { padding-block: var(--sec-lg); }
.section--md { padding-block: var(--sec-md); }
.section--sm { padding-block: var(--sec-sm); }

.section--surface { background: var(--bg-deep); border-top: 1px solid var(--stroke); }

.section--dark {
  position: relative;
  background: var(--smoke);
  color: var(--on-dark-heading);
  overflow: hidden;
  isolation: isolate;
}
.section--dark p { color: var(--on-dark-body); }


/* ============================================================
   TYPOGRAPHY PRIMITIVES
   ============================================================ */

.h1, .h2 { margin: 0; text-wrap: balance; }

/* The page opener is the one heading NOT in the display face.
   SA Triumph maps a-z to identical cap glyphs, so it physically
   cannot be set in sentence case — and a page-length headline in
   all caps is a wall. Noto Sans, tight, is what Stripe does with
   its own sans, and it keeps the long openers readable. */
.h1 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: var(--t-h1-hero);
  line-height: var(--lh-h1);
  letter-spacing: var(--tr-h1);
}

/* Everything else display: SA Triumph, uppercase, 400, +0.02em. */
.h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--t-h2-major);
  line-height: var(--lh-display);
  letter-spacing: var(--tr-display);
  text-transform: uppercase;
}
.h2--cta {
  font-size: var(--t-h2-cta);
}

/* Mono eyebrow — used for ALL labels, chips, meta.
   Space Mono ships 400/700 only; 500 was silently faux-bolding. */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-eyebrow);
  font-weight: 400;
  letter-spacing: var(--tr-eyebrow);
  color: var(--accent);
  text-transform: uppercase;
  margin: 0 0 22px;
}
.eyebrow--muted { color: var(--muted); }
.eyebrow--on-dark { color: var(--on-dark-meta); }
.eyebrow--gold { color: var(--gold); }

.mono {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: var(--tr-label);
  color: var(--muted);
  text-transform: uppercase;
}

.intro {
  font-size: var(--t-intro);
  line-height: var(--lh-intro);
  color: var(--body);
  margin: 0;
  text-wrap: pretty;
}
.section--dark .intro { color: var(--on-dark-body); }

.lede {
  font-size: var(--t-hero-sub);
  line-height: 1.6;
  color: var(--body);
  text-wrap: pretty;
  margin: 0;
}


/* ============================================================
   SCROLL REVEAL SYSTEM
   Driven by a single IntersectionObserver in js/main.js
   ============================================================ */

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity var(--d-reveal) var(--ease-out),
              transform var(--d-reveal) var(--ease-out);
}
[data-reveal="in"] { opacity: 1; transform: none; }

[data-grow] {
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--d-grow) var(--ease-out);
}
[data-grow="in"] { transform: scaleY(1); }


/* ============================================================
   KEYFRAMES
   ============================================================ */

@keyframes noblUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: none; }
}

/* The mark's arms grow outward from the base */
@keyframes noblBuildArms {
  0%   { clip-path: polygon(50% 100%, 50% 100%, 50% 100%); }
  100% { clip-path: polygon(-50% -50%, 150% -50%, 150% 150%, -50% 150%); }
}

@keyframes noblPulse {
  0%, 100% { opacity: .35; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.35); }
}

@keyframes noblMarquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@keyframes noblDash { to { stroke-dashoffset: -400; } }

@keyframes noblSlideIn {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: none; }
}


/* ============================================================
   REDUCED MOTION
   Everything resolves to its final state.
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  [data-grow]   { transform: scaleY(1); }
}