/* ============================================================
   OBSIDIAN — landing page
   Near-black canvas · violet→cyan iridescence · glass surfaces
   ============================================================ */

:root {
  /* palette */
  --bg:        #07070A;
  --bg-2:      #0C0C12;
  --surface:   rgba(255,255,255,0.03);
  --surface-2: rgba(255,255,255,0.05);
  --line:      rgba(255,255,255,0.10);
  --line-soft: rgba(255,255,255,0.06);

  --text:      #F4F2F7;
  --text-mid:  #B7B3C2;
  --text-dim:  #797585;

  --violet:    #7C5CFF;
  --cyan:      #29E0D6;
  --magenta:   #E84CC6;
  --accent:    var(--violet);

  /* type */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, sans-serif;
  --font-mono:    "Space Mono", ui-monospace, monospace;

  /* layout */
  --pad: clamp(20px, 5vw, 80px);
  --maxw: 1340px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.55;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Lenis */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

::selection { background: var(--violet); color: #fff; }

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

/* ---------- fixed WebGL canvas ---------- */
#gl {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  display: block;
  pointer-events: none;
}

/* film grain overlay */
.grain {
  position: fixed;
  inset: -50%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* All real content sits above the canvas */
.nav, main, .footer { position: relative; z-index: 2; }

/* ---------- loader ---------- */
#loader {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  transition: opacity 0.8s var(--ease), visibility 0.8s var(--ease);
}
#loader.done { opacity: 0; visibility: hidden; }
.loader-mark {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--text-dim);
  animation: spin 3s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-bar {
  width: 160px; height: 1px;
  background: var(--line);
  overflow: hidden;
}
.loader-bar span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--violet), var(--cyan));
  transition: width 0.4s var(--ease);
}

/* ---------- nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px var(--pad);
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), padding 0.4s var(--ease);
}
.nav.scrolled {
  background: rgba(7,7,10,0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
  padding-top: 16px; padding-bottom: 16px;
}
.nav-mark { display: flex; align-items: center; gap: 10px; }
.nav-mark .glyph {
  font-family: var(--font-display);
  font-size: 20px;
  background: linear-gradient(120deg, var(--violet), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: spin 8s linear infinite;
}
.nav-mark-text {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--text-mid);
}
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--text-mid);
  padding: 8px 14px;
  border-radius: 100px;
  transition: color 0.3s, background 0.3s;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  border: 1px solid var(--line);
  color: var(--text) !important;
}
.nav-cta:hover { background: var(--surface-2); border-color: var(--violet); }

/* ---------- shared ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-dim);
}
section { padding-left: var(--pad); padding-right: var(--pad); }
.section-head { max-width: var(--maxw); margin: 0 auto; }
.section-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(28px, 4.4vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-top: 18px;
  max-width: 16ch;
}

/* ---------- hero ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; width: 100%; }
.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(40px, 9vw, 132px);
  line-height: 0.96;
  letter-spacing: -0.035em;
  margin: 26px 0;
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line.accent {
  background: linear-gradient(100deg, var(--violet) 10%, var(--cyan) 60%, var(--magenta) 110%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 1.6vw, 21px);
  color: var(--text-mid);
  max-width: 44ch;
  font-weight: 300;
}
.scroll-cue {
  position: absolute;
  bottom: 36px; left: var(--pad);
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--text-dim);
}
.scroll-line {
  width: 60px; height: 1px; background: var(--line);
  position: relative; overflow: hidden;
}
.scroll-line::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  transform: translateX(-100%);
  animation: sweep 2.4s var(--ease) infinite;
}
@keyframes sweep { to { transform: translateX(100%); } }

/* ---------- manifesto ---------- */
.manifesto {
  max-width: 1100px;
  margin: 0 auto;
  padding-top: clamp(120px, 18vh, 240px);
  padding-bottom: clamp(120px, 18vh, 240px);
}
.manifesto-text {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 5vw, 68px);
  line-height: 1.18;
  letter-spacing: -0.02em;
}
.manifesto-text .word { display: inline-block; }
.manifesto-text .dim { color: var(--text-dim); }
.manifesto-text .accent {
  background: linear-gradient(100deg, var(--violet), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- work ---------- */
.work { padding-top: 60px; padding-bottom: clamp(100px, 14vh, 180px); }
.work-grid {
  list-style: none;
  max-width: var(--maxw);
  margin: 56px auto 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.work-card {
  position: relative;
  display: block;
  padding: 30px;
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  background: var(--surface);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
  min-height: 340px;
  transition: border-color 0.4s var(--ease), transform 0.5s var(--ease), background 0.4s var(--ease);
  transform-style: preserve-3d;
  will-change: transform;
}
.work-card::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 0%),
              rgba(124,92,255,0.18), transparent 40%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.work-card:hover { border-color: var(--line); background: var(--surface-2); }
.work-card:hover::before { opacity: 1; }
.work-card-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: auto;
}
.work-index {
  font-family: var(--font-mono);
  font-size: 13px; color: var(--text-dim);
}
.work-tag {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-mid);
  border: 1px solid var(--line);
  padding: 5px 11px; border-radius: 100px;
}
.work-card-body { margin-top: 120px; }
.work-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(22px, 2.6vw, 32px);
  letter-spacing: -0.02em;
  line-height: 1.08;
}
.work-desc {
  margin-top: 14px;
  color: var(--text-mid);
  font-size: 15px;
  max-width: 38ch;
}
.work-link {
  margin-top: 22px;
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text);
}
.work-link .arrow { transition: transform 0.4s var(--ease); }
.work-card:hover .work-link .arrow { transform: translateX(6px); }
/* expandable placeholder card */
.work-card.more {
  display: flex; align-items: center; justify-content: center;
  text-align: center; min-height: 340px;
  border-style: dashed;
  color: var(--text-dim);
}
.work-card.more:hover { color: var(--text-mid); }
.work-card.more .plus { font-family: var(--font-display); font-size: 34px; display: block; margin-bottom: 10px; }

/* ---------- capabilities ---------- */
.capabilities { padding-top: 40px; padding-bottom: clamp(100px, 14vh, 180px); }
.cap-grid {
  max-width: var(--maxw);
  margin: 56px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  overflow: hidden;
}
.cap-col {
  background: var(--bg);
  padding: 38px 32px;
  transition: background 0.4s var(--ease);
}
.cap-col:hover { background: var(--bg-2); }
.cap-num {
  font-family: var(--font-mono);
  font-size: 12px; color: var(--text-dim); letter-spacing: 0.12em;
}
.cap-name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(20px, 2.3vw, 27px);
  letter-spacing: -0.01em;
  margin: 16px 0 8px;
}
.cap-name .dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); margin-right: 10px; vertical-align: middle;
}
.cap-blurb { color: var(--text-mid); font-size: 15px; margin-bottom: 22px; }
.cap-list { list-style: none; display: flex; flex-direction: column; gap: 11px; }
.cap-list li {
  display: flex; gap: 12px; align-items: baseline;
  font-size: 14.5px; color: var(--text-mid);
}
.cap-list li::before {
  content: "—"; color: var(--text-dim); flex: none;
}

/* ---------- contact ---------- */
.contact {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-top: clamp(120px, 18vh, 220px);
  padding-bottom: clamp(120px, 18vh, 220px);
  text-align: center;
}
.contact-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(34px, 6.5vw, 92px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin: 18px auto 0;
  max-width: 16ch;
}
.contact-sub { color: var(--text-mid); margin-top: 22px; font-size: 17px; }
.contact-cta {
  margin-top: 44px;
  display: inline-flex; align-items: center; gap: 16px;
  font-family: var(--font-display);
  font-weight: 500; font-size: 18px;
  padding: 18px 34px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: var(--surface);
  transition: border-color 0.4s var(--ease), background 0.4s var(--ease), transform 0.4s var(--ease);
}
.contact-cta:hover {
  border-color: var(--violet);
  background: linear-gradient(100deg, rgba(124,92,255,0.18), rgba(41,224,214,0.12));
  transform: translateY(-2px);
}
.contact-cta .arrow { transition: transform 0.4s var(--ease); }
.contact-cta:hover .arrow { transform: translateX(6px); }

/* ---------- footer ---------- */
.footer {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding: 30px var(--pad);
  border-top: 1px solid var(--line-soft);
  color: var(--text-dim);
}
.footer .mono { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em; }

/* ---------- reveal initial states (GSAP animates these in) ---------- */
.reveal { opacity: 0; transform: translateY(20px); }
.reveal-y { display: inline-block; transform: translateY(110%); }
.line .reveal-y { will-change: transform; }
.js-ready .manifesto-text .word { opacity: 0.06; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .work-grid { grid-template-columns: 1fr; }
  .cap-grid { grid-template-columns: 1fr; }
  .nav-mark-text { display: none; }
}
@media (max-width: 560px) {
  .work-card { min-height: 300px; }
  .work-card-body { margin-top: 80px; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .reveal-y { transform: none; }
  .js-ready .manifesto-text .word { opacity: 1; }
  #gl { display: none; }
}