/* ============================================================
   3D Web Pack — landing styles
   ============================================================ */
:root {
  --bg: #060608;
  --bg-soft: #0c0c12;
  --fg: #eef0f6;
  --muted: #9aa0b4;
  --line: rgba(255, 255, 255, 0.08);
  --card: rgba(255, 255, 255, 0.025);
  --accent-a: #5b8cff;
  --accent-b: #7c5cff;
  --accent-c: #c44bff;
  --accent-d: #ff5ca8;
  --grad: linear-gradient(100deg, var(--accent-a), var(--accent-c) 55%, var(--accent-d));
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

/* Lenis smooth scroll — required CSS so it doesn't fight native smooth scrolling */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* subtle global grain/vignette over everything but canvas */
body::after {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 2;
  background: radial-gradient(120% 120% at 50% 0%, transparent 55%, rgba(0,0,0,0.55) 100%);
}

a { color: inherit; text-decoration: none; }
em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
code, pre { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }

/* ---------- WebGL canvas (lives inside the hero only) ---------- */
#webgl {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
  display: block;
}

/* keep content above canvas */
.nav, main, .footer { position: relative; z-index: 3; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 56px);
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(6, 6, 8, 0.6);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav__brand { font-family: var(--font-display); font-weight: 600; letter-spacing: 0.5px; display: flex; align-items: center; gap: 8px; }
.nav__logo { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; font-size: 1.2em; }
.nav__links { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 30px); }
.nav__links a { color: var(--muted); font-size: 0.92rem; transition: color 0.25s; }
.nav__links a:hover { color: var(--fg); }
.nav__cta {
  border: 1px solid var(--line); border-radius: 100px;
  padding: 7px 16px; color: var(--fg) !important;
}
.nav__cta:hover { border-color: var(--accent-b); box-shadow: 0 0 24px -8px var(--accent-b); }
@media (max-width: 680px) { .nav__links a:not(.nav__cta) { display: none; } }

/* ---------- Layout primitives ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(70px, 12vh, 140px) clamp(20px, 5vw, 40px);
}
.section__head { max-width: 760px; margin-bottom: clamp(36px, 6vw, 64px); }
.kicker {
  display: inline-block; font-family: var(--font-display);
  font-size: 0.8rem; letter-spacing: 3px; text-transform: uppercase;
  color: var(--accent-b); margin-bottom: 18px;
}
h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.8rem, 4.4vw, 3.1rem); line-height: 1.05; letter-spacing: -1px; }
h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.18rem; }
h4 { font-family: var(--font-display); font-weight: 600; font-size: 0.78rem; letter-spacing: 2.5px; text-transform: uppercase; color: var(--accent-a); margin-bottom: 16px; }
.lead { color: var(--muted); font-size: clamp(1rem, 1.7vw, 1.18rem); margin-top: 18px; max-width: 640px; }

/* ---------- Hero ---------- */
.hero { min-height: 100svh; display: flex; align-items: center; position: relative; overflow: hidden; }
.hero__inner { max-width: var(--maxw); width: 100%; margin: 0 auto; padding: 0 clamp(20px, 5vw, 40px); position: relative; z-index: 1; }
.hero__eyebrow {
  font-family: var(--font-display); font-size: 0.85rem; letter-spacing: 2px;
  text-transform: uppercase; color: var(--muted); margin-bottom: 22px;
}
.hero__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(2.8rem, 9vw, 6.6rem); line-height: 0.96; letter-spacing: -2px;
}
.hero__title .reveal-line { display: block; overflow: hidden; }
.hero__sub { color: var(--muted); max-width: 560px; margin: 28px 0 36px; font-size: clamp(1rem, 1.8vw, 1.2rem); }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__scroll { margin-top: 64px; color: var(--muted); font-size: 0.78rem; letter-spacing: 2px; text-transform: uppercase; display: flex; align-items: center; gap: 12px; }
.hero__scroll span { width: 1px; height: 38px; background: linear-gradient(var(--accent-b), transparent); display: inline-block; animation: scrollline 2s var(--ease) infinite; transform-origin: top; }
@keyframes scrollline { 0%,100% { transform: scaleY(0.3); opacity: 0.4; } 50% { transform: scaleY(1); opacity: 1; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-weight: 500; font-size: 0.95rem;
  padding: 13px 26px; border-radius: 100px; cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--grad); color: #fff; box-shadow: 0 10px 40px -12px var(--accent-c); }
.btn--primary:hover { box-shadow: 0 14px 50px -10px var(--accent-c); }
.btn--ghost { border: 1px solid var(--line); color: var(--fg); }
.btn--ghost:hover { border-color: var(--accent-b); background: rgba(124, 92, 255, 0.08); }

/* ---------- Stats ---------- */
.stats { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(20px, 5vw, 40px); }
.stats__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
}
.stat { background: var(--bg-soft); padding: clamp(24px, 4vw, 40px) 22px; text-align: center; }
.stat__num { display: block; font-family: var(--font-display); font-weight: 700; font-size: clamp(2.2rem, 5vw, 3.4rem); background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; }
.stat__label { display: block; margin-top: 10px; color: var(--muted); font-size: 0.85rem; }
@media (max-width: 680px) { .stats__grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Cards ---------- */
.cards { display: grid; gap: 18px; }
.cards--agents { grid-template-columns: repeat(3, 1fr); }
.cards--skills { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .cards--agents { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cards--agents, .cards--skills { grid-template-columns: 1fr; } }

.card {
  position: relative; background: var(--card);
  border: 1px solid var(--line); border-radius: 18px;
  padding: 28px 26px; overflow: hidden;
  backdrop-filter: blur(6px);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), background 0.4s;
}
.card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), color-mix(in srgb, var(--c, var(--accent-b)) 18%, transparent), transparent 60%);
  opacity: 0; transition: opacity 0.4s; pointer-events: none;
}
.card:hover { transform: translateY(-5px); border-color: color-mix(in srgb, var(--c, var(--accent-b)) 50%, transparent); }
.card:hover::before { opacity: 1; }
.card__icon { font-size: 1.6rem; color: var(--c, var(--accent-b)); display: block; margin-bottom: 16px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.95rem; }
.card--skill code {
  display: inline-block; font-size: 0.95rem; color: var(--fg);
  background: rgba(124, 92, 255, 0.12); border: 1px solid var(--line);
  padding: 7px 13px; border-radius: 9px; margin-bottom: 14px;
}

/* ---------- Stack ---------- */
.stack__groups { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 900px) { .stack__groups { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .stack__groups { grid-template-columns: 1fr; } }
.stack__group { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 26px 24px; }
.stack__group ul { list-style: none; }
.stack__group li { color: var(--muted); padding: 7px 0; border-bottom: 1px solid var(--line); font-size: 0.94rem; }
.stack__group li:last-child { border-bottom: none; }

/* ---------- Install / code ---------- */
.code-block {
  background: #0a0a10; border: 1px solid var(--line); border-radius: 16px;
  padding: 26px clamp(18px, 3vw, 32px); overflow-x: auto;
  box-shadow: 0 30px 80px -40px #000;
}
.code-block pre { margin: 0; }
.code-block code { font-size: clamp(0.82rem, 1.6vw, 0.95rem); line-height: 1.9; color: #d7dbea; white-space: pre; }
.c-comment { color: #5c6275; }
.c-str { color: #7fd1b9; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); margin-top: 40px; background: rgba(6,6,8,0.6); backdrop-filter: blur(10px); }
.footer__inner { max-width: var(--maxw); margin: 0 auto; padding: 44px clamp(20px, 5vw, 40px); display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer__brand { font-family: var(--font-display); font-weight: 600; }
.footer p { color: var(--muted); font-size: 0.9rem; }

/* ---------- Reveal animations (JS-driven) ---------- */
.reveal, .reveal-line > * { will-change: transform, opacity; }
.js .reveal { opacity: 0; transform: translateY(28px); }
.js .reveal-line { opacity: 0; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal, .js .reveal-line { opacity: 1 !important; transform: none !important; }
}