/* ============================================================
   StrataCode — inverted minimal-grotesque system
   Black ground, white text, monospace technical labels.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg:        #000000;
  --bg-soft:   #0a0a0a;
  --bg-card:   #0d0d0d;
  --line:      rgba(255, 255, 255, 0.12);
  --line-soft: rgba(255, 255, 255, 0.07);
  --fg:        #ffffff;
  --fg-mid:    rgba(255, 255, 255, 0.66);
  --fg-dim:    rgba(255, 255, 255, 0.42);
  --fg-faint:  rgba(255, 255, 255, 0.28);

  /* brand — StrataCode warm scheme */
  --accent:      #fe7d2d;   /* orange */
  --accent-2:    #fa4515;   /* red    */
  --accent-grad: linear-gradient(135deg, #fe7d2d 0%, #fa4515 100%);
  --accent-soft: rgba(250, 69, 21, 0.16);

  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1320px;
  --pad: clamp(20px, 5vw, 64px);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #000; }

.grad-text {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

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

img { max-width: 100%; display: block; }

/* ---------- layout ---------- */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad);
  padding-right: var(--pad);
}

.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* ---------- mono label ---------- */
.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-dim);
  font-weight: 500;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-dim);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--accent-grad);
  border-radius: 2px;
  display: inline-block;
}

/* ---------- typography ---------- */
h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}

.display {
  font-size: clamp(3rem, 8.4vw, 7.4rem);
  line-height: 0.94;
  letter-spacing: -0.035em;
  font-weight: 600;
}

.h-section {
  font-size: clamp(2rem, 4.4vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.lede {
  font-size: clamp(1.15rem, 1.7vw, 1.5rem);
  line-height: 1.5;
  color: var(--fg-mid);
  font-weight: 400;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}

p { text-wrap: pretty; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 24px; height: 24px;
  display: block;
  flex: 0 0 auto;
}
.brand small {
  font-family: var(--mono);
  white-space: nowrap;
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
  text-transform: uppercase;
  font-weight: 500;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 3px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 40px);
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.nav-links a {
  color: var(--fg-mid);
  transition: color 0.18s ease;
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--fg); }
.nav-links a.active { color: var(--fg); }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -24px;
  height: 2px; background: var(--accent-grad);
}
.nav-cta {
  border: 1px solid var(--line);
  padding: 9px 16px;
  border-radius: 4px;
  color: var(--fg) !important;
  transition: background 0.18s ease, color 0.18s ease;
}
.nav-cta:hover { background: var(--accent-grad); border-color: transparent; color: #000 !important; }

.nav-toggle { display: none; background: none; border: 0; color: var(--fg); cursor: pointer; padding: 8px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 22px;
  border-radius: 4px;
  border: 1px solid transparent;
  background: var(--accent-grad);
  color: #160600;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.btn:hover { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn .arr { transition: transform 0.2s ease; }
.btn:hover .arr { transform: translateX(4px); }

.btn-ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: var(--accent-grad); color: #160600; border-color: transparent; }

/* ---------- sections ---------- */
.section { padding: clamp(70px, 11vw, 150px) 0; }
.section-tight { padding: clamp(50px, 7vw, 90px) 0; }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: clamp(50px, 7vw, 90px) 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
}
.footer-col h5 {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-dim);
  font-weight: 500;
  margin: 0 0 18px;
}
.footer-col a {
  display: block;
  color: var(--fg-mid);
  padding: 6px 0;
  font-size: 0.95rem;
  transition: color 0.16s ease;
}
.footer-col a:hover { color: var(--fg); }
.footer-col a.social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  margin-top: 24px;
  color: var(--fg-mid);
  border: 1px solid var(--line);
  border-radius: 9px;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}
.footer-col a.social:hover { color: #160600; background: var(--accent-grad); border-color: transparent; }
.social svg { width: 15px; height: 15px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 64px;
  padding-top: 28px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  gap: 20px;
  flex-wrap: wrap;
}

/* ---------- code ---------- */
pre, code, .code { font-family: var(--mono); }
.codeblock {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 6px;
  margin: 18px 0;
  overflow: hidden;
}
.codeblock-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 14px;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-dim);
}
.codeblock pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 0.84rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.9);
}
.codeblock pre .cmt { color: var(--fg-faint); }
.codeblock pre .tok { color: var(--accent); font-weight: 500; }
.copy-btn {
  background: none;
  border: 1px solid var(--line);
  color: var(--fg-dim);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.16s ease;
}
.copy-btn:hover { color: #000; background: var(--fg); border-color: var(--fg); }

code.inline {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--line-soft);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  color: #fff;
  word-break: break-word;
}

/* reveal — visible end-state is the BASE so content always shows;
   the entrance only plays as a safe enhancement once .in is added. */
.reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: no-preference) {
  .reveal.in { animation: revealIn 0.7s cubic-bezier(.2,.6,.2,1) both; }
  @keyframes revealIn {
    from { opacity: 0; transform: translateY(22px); }
    to   { opacity: 1; transform: none; }
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- responsive nav ---------- */
@media (max-width: 800px) {
  .nav-links {
    position: fixed;
    inset: 68px 0 auto 0;
    background: #000;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px var(--pad) 20px;
    transform: translateY(-130%);
    transition: transform 0.32s cubic-bezier(.2,.7,.2,1);
  }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 14px 0; width: 100%; border-bottom: 1px solid var(--line-soft); }
  .nav-links a.active::after { display: none; }
  .nav-cta { border: 1px solid var(--line); margin-top: 8px; text-align: center; }
  .nav-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}