/* Reset + base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0 0 var(--sp-4);
}
h1 { font-size: var(--text-hero); letter-spacing: -0.035em; }
h2 { font-size: clamp(2rem, 4vw, var(--text-4xl)); }
h3 { font-size: var(--text-2xl); letter-spacing: -0.02em; }
h4 { font-size: var(--text-xl); }
p  { margin: 0 0 var(--sp-4); color: var(--text-muted); }

::selection { background: var(--accent); color: #00150f; }

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}
.section { padding: var(--sp-9) 0; position: relative; }
.section--lg { padding: var(--sp-10) 0; }
.section--sm { padding: var(--sp-7) 0; }

/* Eyebrow */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 6px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}
.eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); animation: pulse 2.6s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1);} 50% { opacity: .6; transform: scale(.85);} }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 14px 22px;
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn--primary {
  background: var(--accent);
  color: #00150f;
  box-shadow: 0 6px 30px var(--accent-glow);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px var(--accent-glow); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn--ghost:hover { background: var(--surface); border-color: var(--accent); color: var(--accent); }
.btn--rand {
  background: var(--accent-rand);
  color: #1a1102;
}
.btn--rand:hover { transform: translateY(-2px); }

.btn .arrow { transition: transform .25s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  transition: transform .35s ease, border-color .35s ease, background .35s ease;
}
.card:hover { border-color: var(--border-strong); }

/* Grid utility */
.grid { display: grid; gap: var(--sp-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.8,.2,1); will-change: opacity, transform; }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal--right { transform: translateX(40px); }
.reveal--right.is-visible { transform: none; }
.reveal--left { transform: translateX(-40px); }
.reveal--left.is-visible { transform: none; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 999;
  transition: width .12s linear;
  pointer-events: none;
}

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

/* Code */
code, pre { font-family: var(--font-mono); font-size: 0.92em; }
pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--r-md); padding: var(--sp-4); overflow-x: auto; }

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