/* AgentStack Kit — terminal ink + electric lime */
:root {
  --ink: #0a0c0b;
  --ink-2: #111614;
  --ink-3: #1a211c;
  --panel: #141a16;
  --line: #2a3530;
  --line-soft: #1e2823;
  --fog: #8a9a90;
  --mist: #b8c7bc;
  --paper: #e8f0ea;
  --lime: #b8ff3c;
  --lime-dim: #7ab82a;
  --lime-glow: rgba(184, 255, 60, 0.18);
  --warn: #ffb347;
  --danger: #ff6b5a;
  --ok: #5dffb0;
  --font-display: "Syne", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --max: 1120px;
  --gutter: clamp(1rem, 3vw, 2rem);
  --radius: 2px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, var(--lime-glow), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 0%, rgba(93, 255, 176, 0.06), transparent 50%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.12) 2px,
      rgba(0, 0, 0, 0.12) 3px
    );
  opacity: 0.9;
}
a { color: var(--lime); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: #d4ff7a; }
img { max-width: 100%; display: block; }
code, kbd, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}
pre {
  margin: 0;
  padding: 1rem 1.1rem;
  background: var(--ink);
  border: 1px solid var(--line);
  overflow-x: auto;
  color: var(--mist);
  line-height: 1.45;
}
.wrap {
  position: relative;
  z-index: 1;
  width: min(100% - 2 * var(--gutter), var(--max));
  margin-inline: auto;
}
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: var(--gutter);
  top: 0.5rem;
  z-index: 100;
  background: var(--lime);
  color: var(--ink);
  padding: 0.5rem 0.75rem;
}

/* —— Top bar —— */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 12, 11, 0.92);
  backdrop-filter: blur(10px);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
}
.brand span { color: var(--lime); }
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1rem;
  align-items: center;
}
.nav a {
  color: var(--fog);
  text-decoration: none;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--lime); }
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--paper);
  padding: 0.4rem 0.65rem;
  font-family: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}
@media (max-width: 860px) {
  .nav-toggle { display: inline-block; }
  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding-bottom: 0.75rem;
  }
  .nav.open { display: flex; }
  .topbar-inner { flex-wrap: wrap; }
}

/* —— Stack strip (every page) —— */
.stack-strip {
  border-bottom: 1px solid var(--line-soft);
  background: var(--ink-2);
}
.stack-strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding: 0.55rem 0;
  font-size: 0.72rem;
}
.stack-strip .label {
  color: var(--fog);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 0.25rem;
}
.stack-strip a {
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.2rem 0.45rem;
  background: var(--ink-3);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.stack-strip a:hover {
  border-color: var(--lime);
  color: var(--lime);
}
.stack-strip a.accent {
  border-color: var(--lime-dim);
  color: var(--lime);
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: min(88vh, 720px);
  display: grid;
  align-items: end;
  padding: clamp(3rem, 10vh, 6rem) 0 clamp(2.5rem, 6vh, 4rem);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.55), transparent 85%);
  animation: grid-drift 28s linear infinite;
  pointer-events: none;
}
@keyframes grid-drift {
  from { transform: translateY(0); }
  to { transform: translateY(48px); }
}
.hero-scan {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--lime), transparent);
  opacity: 0.35;
  animation: scan 6s var(--ease) infinite;
  pointer-events: none;
}
@keyframes scan {
  0% { top: 8%; opacity: 0; }
  15% { opacity: 0.4; }
  85% { opacity: 0.25; }
  100% { top: 92%; opacity: 0; }
}
.hero-copy { position: relative; max-width: 38rem; }
.hero-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 9vw, 5.2rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  margin: 0 0 1.25rem;
  color: var(--paper);
}
.hero-brand em {
  font-style: normal;
  color: var(--lime);
  display: block;
}
.hero-hook {
  margin: 0 0 1.75rem;
  color: var(--mist);
  font-size: clamp(0.95rem, 2.2vw, 1.05rem);
  max-width: 34rem;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s, border-color 0.2s, color 0.2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--lime);
  color: var(--ink);
  border-color: var(--lime);
}
.btn-primary:hover { background: #d4ff7a; color: var(--ink); }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--lime); color: var(--lime); }
.btn-sm { padding: 0.4rem 0.7rem; font-size: 0.75rem; }

/* —— Sections —— */
.section {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  border-bottom: 1px solid var(--line-soft);
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--lime-dim);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
h1.page-title, .section-head h2, .page-title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0;
}
h1.page-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 0.75rem;
}
.section-head h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); }
.lede {
  margin: 0;
  color: var(--fog);
  max-width: 40rem;
  font-size: 0.95rem;
}
.page-hero {
  padding: clamp(2rem, 5vw, 3rem) 0 1.5rem;
  border-bottom: 1px solid var(--line);
}
.page-hero .lede { margin-top: 0.5rem; }

/* —— Grids / cards (content only, not hero) —— */
.grid {
  display: grid;
  gap: 1rem;
}
.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: 560px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1.15rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  transition: border-color 0.2s var(--ease);
}
.card:hover { border-color: var(--lime-dim); }
.card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.card p { margin: 0; color: var(--fog); font-size: 0.85rem; flex: 1; }
.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--lime-dim);
}
.tag {
  border: 1px solid var(--line);
  padding: 0.1rem 0.35rem;
  color: var(--mist);
}
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}
.copy-btn {
  background: var(--ink);
  border: 1px solid var(--line);
  color: var(--mist);
  font-family: inherit;
  font-size: 0.72rem;
  padding: 0.35rem 0.55rem;
  cursor: pointer;
}
.copy-btn:hover, .copy-btn.copied {
  border-color: var(--lime);
  color: var(--lime);
}
.install-block {
  margin-top: 0.5rem;
}
.install-block summary {
  cursor: pointer;
  color: var(--mist);
  font-size: 0.78rem;
  list-style: none;
}
.install-block summary::-webkit-details-marker { display: none; }
.install-block[open] summary { color: var(--lime); margin-bottom: 0.5rem; }

/* —— Product / stack —— */
.product-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line-soft);
}
.product-row:last-child { border-bottom: 0; }
.product-row h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
}
.product-row p { margin: 0; color: var(--fog); font-size: 0.85rem; }
@media (max-width: 640px) {
  .product-row { grid-template-columns: 1fr; }
}

/* —— Disclosure / prose —— */
.prose { max-width: 42rem; color: var(--mist); }
.prose h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 2rem 0 0.75rem;
  color: var(--paper);
}
.prose p, .prose li { font-size: 0.9rem; }
.prose ul { padding-left: 1.2rem; }
.ftc-note {
  margin-top: 1.5rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--fog);
  font-size: 0.8rem;
}

/* —— Footer —— */
.footer {
  padding: 2.5rem 0 3rem;
  border-top: 1px solid var(--line);
  background: var(--ink-2);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer h4 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fog);
}
.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer li { margin-bottom: 0.4rem; }
.footer a {
  color: var(--mist);
  text-decoration: none;
  font-size: 0.85rem;
}
.footer a:hover { color: var(--lime); }
.footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  margin: 0 0 0.5rem;
}
.footer-brand span { color: var(--lime); }
.footer-note {
  color: var(--fog);
  font-size: 0.78rem;
  margin: 0.75rem 0 0;
}
.footer-bottom {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  color: var(--fog);
  font-size: 0.75rem;
}

/* —— Motion —— */
@media (prefers-reduced-motion: reduce) {
  .hero-grid, .hero-scan { animation: none; }
  .btn:hover { transform: none; }
  html { scroll-behavior: auto; }
}

/* —— Utility —— */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  border: 0;
}
.mono-soft { color: var(--fog); font-size: 0.8rem; }
.hl { color: var(--lime); }
.table-wrap { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
table.data th, table.data td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--line-soft);
}
table.data th {
  color: var(--fog);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.7rem;
}