/* --- Tokens ---------------------------------------------------------- */
:root {
  --bg:        #000000;
  --bg-soft:   #0a0a0a;
  --fg:        #ffffff;
  --accent:    #ff7a1a;         /* orange for step numbers + CTA */
  --accent-hi: #ff9448;
  --border:    rgba(255,255,255,0.10);

  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --maxw: 1100px;
  --pad:  clamp(1.25rem, 4vw, 2.5rem);
}

/* --- Reset ----------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 22px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; margin: 0; }

/* --- Nav ------------------------------------------------------------- */
.nav {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem var(--pad);
  max-width: var(--maxw);
  margin: 0 auto;
}
.nav__brand {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: -0.02em;
}
.nav__links {
  display: flex;
  gap: 1.75rem;
  font-size: 0.95rem;
  color: var(--fg);
}
.nav__links a:hover { color: var(--fg); }

/* --- Hero ------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.7;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.85) 70%, #000 100%),
    linear-gradient(180deg, rgba(0,0,0,0.1) 0%, #000 100%);
}
.hero__content {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  padding: 4rem var(--pad) 6rem;
}
.hero__title {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin: 0 0 1.5rem;
}
.hero__text {
  font-size: 1.5rem;
  color: var(--fg);
  max-width: 62ch;
  margin: 0 auto 1.25rem;
  text-align: left;
}
.hero__text a { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }
.hero__text a:hover { color: var(--accent-hi); }

.hero__figure {
  margin: 2rem 0 0;
  width: var(--fig-w, 60%);
}
.hero__figure img { width: 100%; height: auto; }
.hero__figure--centered {
  margin-left: auto;
  margin-right: auto;
}

/* --- Buttons --------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--accent);
  color: #000;
}
.btn--primary:hover { background: var(--accent-hi); }
.btn--ghost {
  border-color: var(--border);
  color: var(--fg);
}
.btn--ghost:hover { border-color: var(--fg); }

/* --- Section shared -------------------------------------------------- */
.section__title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0 0 3rem;
}

/* --- Steps ----------------------------------------------------------- */
.steps {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 6rem var(--pad);
}
.steps__list {
  display: flex;
  flex-direction: column;
  gap: 5rem;
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num  body"
    "fig  fig";
  gap: 1.5rem 1.75rem;
  align-items: start;
}
.step__num {
  grid-area: num;
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 6px 24px rgba(255,122,26,0.35);
}
.step__body { grid-area: body; }
.step__title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0.35rem 0 0.75rem;
  color: var(--fg);
}
.step__text {
  font-size: 1.5rem;
  color: var(--fg);
  margin: 0;
  max-width: 60ch;
}
.step__figure {
  grid-area: fig;
  margin-top: 1rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-soft);
}
.step__figure img { width: 100%; }

/* --- Terminal code block inside a step ------------------------------ */
.step__terminal {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  background: #111;
  color: #e8e8e8;
  padding: 0.85rem 1.1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin: 0.5rem 0;
  overflow-x: auto;
}
.step__terminal code::before { content: "$ "; color: var(--accent); }

/* --- Learn more ------------------------------------------------------ */
.learn {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 4rem var(--pad) 6rem;
  text-align: center;
}
.learn__text {
  font-size: 1.5rem;
  color: var(--fg);
  margin: 0.5rem 0;
}
.learn__text a {
  color: var(--accent);
  font-family: var(--font-mono);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.learn__text a:hover { border-bottom-color: var(--accent); }

/* --- Video ----------------------------------------------------------- */
.video {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 4rem var(--pad) 6rem;
}
.video__frame {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  aspect-ratio: 16 / 9;
}
.video__frame video,
.video__frame iframe {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 0;
}

/* --- Footer ---------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem var(--pad);
  text-align: center;
  color: var(--fg);
  font-size: 1.5rem;
}
.footer p { margin: 0.25rem 0; }
.footer a:hover { color: var(--fg); }

/* --- Scroll-reveal (no JS, native CSS scroll-driven animation) ------ */
@supports (animation-timeline: view()) {
  .step {
    animation: fade-up linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 40%;
  }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* --- Larger screens: put figure beside text ------------------------- */
@media (min-width: 800px) {
  .step {
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 1.2fr);
    grid-template-areas: "num body fig";
    gap: 2rem;
    align-items: center;
  }
  .step__figure { margin-top: 0; }
  .steps__list { gap: 6rem; }
}