/* ===========================================================
   Mujin Labs
   Modern, interactive identity site. No build step.
   =========================================================== */

:root {
  --bg:        #07080c;
  --bg-2:      #0b0d14;
  --panel:     #0e1119;
  --line:      rgba(255,255,255,.08);
  --line-2:    rgba(255,255,255,.14);
  --ink:       #eef1f7;
  --ink-soft:  #aab3c5;
  --ink-mute:  #6c7689;
  --accent:    #56e0c8;   /* signature teal */
  --accent-2:  #7c9cff;   /* electric blue  */
  --accent-3:  #c9f367;   /* lime spark     */
  --grad:      linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 55%, #b98bff 100%);
  --maxw:      1140px;
  --ease:      cubic-bezier(.16,1,.3,1);
  --font:      'Space Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono:      'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

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

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

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

::selection { background: rgba(86,224,200,.28); color: #fff; }

a { color: inherit; text-decoration: none; }
.mono { font-family: var(--mono); font-weight: 400; letter-spacing: -.01em; }
.jp { font-feature-settings: "palt"; letter-spacing: .02em; }

/* ---- Background canvas + grain ---- */
#net {
  position: fixed; inset: 0; z-index: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  opacity: .035; mix-blend-mode: screen;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
body::after { /* top + bottom vignette glow */
  content: ""; position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(60% 50% at 50% -8%, rgba(86,224,200,.10), transparent 70%),
    radial-gradient(50% 40% at 90% 8%, rgba(124,156,255,.08), transparent 70%);
}

main, .nav, .footer { position: relative; z-index: 2; }

/* =========================== NAV =========================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1.1rem clamp(1.2rem, 4vw, 2.6rem);
  transition: background .4s var(--ease), backdrop-filter .4s var(--ease), border-color .4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(8,9,14,.72);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.brand { display: flex; align-items: center; gap: .6rem; margin-right: auto; }
.brand-mark { color: var(--accent); display: grid; place-items: center; filter: drop-shadow(0 0 10px rgba(86,224,200,.5)); }
.brand-text { font-weight: 700; font-size: 1.02rem; letter-spacing: -.01em; display: flex; align-items: baseline; gap: .5rem; }
.brand-jp { font-size: .72rem; color: var(--ink-mute); font-weight: 500; letter-spacing: .08em; }
.nav-links { display: flex; gap: 1.7rem; }
.nav-links a {
  font-size: .86rem; color: var(--ink-soft); position: relative; padding: .2rem 0;
  transition: color .25s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 1px; width: 0;
  background: var(--accent); transition: width .3s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  font-family: var(--mono); font-size: .78rem; color: var(--ink);
  border: 1px solid var(--line-2); padding: .5rem .85rem; border-radius: 8px;
  transition: border-color .25s, background .25s, color .25s;
}
.nav-cta:hover { border-color: var(--accent); color: var(--accent); background: rgba(86,224,200,.06); }

/* =========================== HERO =========================== */
.hero {
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 7rem clamp(1.2rem, 5vw, 3rem) 4rem;
  position: relative;
}
.hero-inner { max-width: var(--maxw); width: 100%; margin: 0 auto; }

.status {
  display: inline-flex; align-items: center; gap: .55rem; flex-wrap: wrap;
  font-size: .8rem; color: var(--ink-soft);
  border: 1px solid var(--line); background: rgba(255,255,255,.02);
  padding: .42rem .8rem; border-radius: 100px; margin-bottom: 1.8rem;
}
.status .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 0 rgba(86,224,200,.7); animation: pulse 2.4s infinite;
}
.status .sep { color: var(--ink-mute); }
.status .mono { color: var(--ink-mute); font-size: .74rem; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(86,224,200,.6); }
  70% { box-shadow: 0 0 0 8px rgba(86,224,200,0); }
  100% { box-shadow: 0 0 0 0 rgba(86,224,200,0); }
}

.hero-title {
  font-size: clamp(2.6rem, 7.4vw, 5.6rem);
  line-height: 1.02; letter-spacing: -.035em; font-weight: 700;
  margin-bottom: 1.6rem;
}
.hero-title .line { display: block; opacity: 0; transform: translateY(28px); animation: rise .9s var(--ease) forwards; }
.hero-title .line:nth-child(2) { animation-delay: .12s; }
.hero-title .grad {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
@keyframes rise { to { opacity: 1; transform: translateY(0); } }

.hero-sub {
  max-width: 640px; font-size: clamp(1.02rem, 2vw, 1.22rem);
  color: var(--ink-soft); margin-bottom: 2.4rem;
  opacity: 0; animation: rise .9s var(--ease) .28s forwards;
}
.hero-sub em { color: var(--accent); font-style: normal; }
.hero-sub .jp { color: var(--ink); }

.hero-cta { display: flex; gap: .9rem; flex-wrap: wrap; opacity: 0; animation: rise .9s var(--ease) .4s forwards; }

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .92rem; font-weight: 600; padding: .82rem 1.5rem;
  border-radius: 10px; border: 1px solid transparent; cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .3s, background .3s, border-color .3s, color .3s;
}
.btn-primary { background: var(--accent); color: #04130f; box-shadow: 0 6px 30px -8px rgba(86,224,200,.5); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px -8px rgba(86,224,200,.65); }
.btn-ghost { color: var(--ink); border-color: var(--line-2); background: rgba(255,255,255,.02); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

.scroll-hint { position: absolute; bottom: 1.8rem; left: 50%; transform: translateX(-50%); }
.scroll-hint span {
  display: block; width: 22px; height: 36px; border: 1.5px solid var(--line-2); border-radius: 12px; position: relative;
}
.scroll-hint span::after {
  content: ""; position: absolute; top: 7px; left: 50%; transform: translateX(-50%);
  width: 3px; height: 7px; border-radius: 3px; background: var(--accent);
  animation: scrolldot 1.8s var(--ease) infinite;
}
@keyframes scrolldot { 0%{opacity:0;top:7px} 30%{opacity:1} 70%{opacity:1;top:18px} 100%{opacity:0;top:18px} }

/* =========================== SECTIONS =========================== */
.section { padding: clamp(4.5rem, 11vw, 9rem) clamp(1.2rem, 5vw, 3rem); }
.section-alt { background: linear-gradient(180deg, transparent, var(--bg-2) 12%, var(--bg-2) 88%, transparent); }
.wrap { max-width: var(--maxw); margin: 0 auto; width: 100%; }
.center { text-align: center; display: flex; flex-direction: column; align-items: center; }

.eyebrow {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1.3rem;
}
.section h2 {
  font-size: clamp(1.8rem, 4.4vw, 3rem); line-height: 1.1; letter-spacing: -.025em;
  font-weight: 700; max-width: 18ch; margin-bottom: 1.6rem;
}
.center h2 { max-width: 22ch; }
.section h2.big { max-width: 16ch; }

.lead { font-size: clamp(1.02rem, 1.9vw, 1.2rem); color: var(--ink-soft); max-width: 62ch; }
.center .lead { margin-inline: auto; }
.lead b { color: var(--accent); font-weight: 600; }

.lead-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2.4rem;
  margin: 2rem 0 3.5rem; max-width: 880px;
}
.lead-grid p { color: var(--ink-soft); font-size: 1.04rem; }

/* ---- Pillars ---- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.pillar {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: 16px; padding: 1.8rem 1.6rem 1.6rem;
  background: linear-gradient(180deg, rgba(255,255,255,.025), rgba(255,255,255,0));
  transition: border-color .35s, transform .35s var(--ease), background .35s;
}
.pillar:hover { border-color: var(--line-2); transform: translateY(-4px); background: linear-gradient(180deg, rgba(86,224,200,.05), rgba(255,255,255,0)); }
.pillar-kanji {
  position: absolute; right: -.4rem; top: -1.4rem; font-size: 5.4rem; font-weight: 700;
  color: rgba(255,255,255,.035); letter-spacing: .05em; pointer-events: none;
}
.pillar h3 { font-size: 1.2rem; margin-bottom: .5rem; }
.pillar p { color: var(--ink-soft); font-size: .95rem; }

/* ---- Thesis ---- */
.thesis-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-top: 3rem; }
.tcard {
  border: 1px solid var(--line); border-radius: 18px; padding: 2rem;
  background: var(--panel); position: relative; overflow: hidden;
  transition: border-color .35s, transform .35s var(--ease);
}
.tcard::before {
  content: ""; position: absolute; inset: 0; border-radius: 18px; padding: 1px;
  background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0; transition: opacity .35s;
}
.tcard:hover { transform: translateY(-4px); }
.tcard:hover::before { opacity: .5; }
.tcard-num {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 11px;
  background: rgba(86,224,200,.1); color: var(--accent); font-size: 1.1rem; font-weight: 500;
  border: 1px solid rgba(86,224,200,.25); margin-bottom: 1.2rem;
}
.tcard h3 { font-size: 1.3rem; margin-bottom: .6rem; }
.tcard p { color: var(--ink-soft); font-size: .98rem; }

/* ---- Operating loop ---- */
.loop {
  display: grid; grid-template-columns: 320px 1fr; gap: clamp(2rem, 6vw, 4.5rem);
  align-items: center; margin-top: 3rem;
}
.loop-dial { position: relative; width: 320px; height: 320px; justify-self: center; }
.loop-svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.loop-ring { fill: none; stroke: var(--line); stroke-width: 1.5; }
.loop-ring-prog {
  fill: none; stroke: url(#g); stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round;
  stroke-dasharray: 829; stroke-dashoffset: 829;
  transition: stroke-dashoffset 5s linear;
  filter: drop-shadow(0 0 6px rgba(86,224,200,.6));
}
.loop-center {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: .3rem; pointer-events: none;
}
.loop-center-k { font-size: 2rem; font-weight: 700; color: rgba(255,255,255,.1); letter-spacing: .1em; }
.loop-center-l { color: var(--accent); font-size: .9rem; }
.loop-node {
  position: absolute; width: 13px; height: 13px; border-radius: 50%;
  background: var(--bg-2); border: 2px solid var(--line-2);
  transform: translate(-50%, -50%); transition: all .4s var(--ease);
}
.loop-node.active {
  background: var(--accent); border-color: var(--accent);
  box-shadow: 0 0 0 6px rgba(86,224,200,.16), 0 0 16px rgba(86,224,200,.7);
}
.loop-steps { list-style: none; display: flex; flex-direction: column; gap: .2rem; }
.loop-steps li {
  display: grid; grid-template-columns: auto 1fr; column-gap: 1rem; align-items: baseline;
  padding: 1rem 1.1rem; border-radius: 12px; border: 1px solid transparent;
  transition: background .35s, border-color .35s; cursor: default;
}
.loop-steps li .mono { color: var(--ink-mute); font-size: .82rem; grid-row: span 2; }
.loop-steps li b { font-size: 1.05rem; }
.loop-steps li i { font-style: normal; color: var(--ink-soft); font-size: .92rem; grid-column: 2; }
.loop-steps li.active { background: rgba(86,224,200,.06); border-color: rgba(86,224,200,.22); }
.loop-steps li.active .mono { color: var(--accent); }

/* ---- Product cards ---- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; margin-top: 3rem; }
.card {
  display: flex; flex-direction: column; gap: .9rem;
  border: 1px solid var(--line); border-radius: 18px; padding: 1.7rem;
  background: var(--panel);
  transition: border-color .35s, transform .35s var(--ease), box-shadow .35s;
}
.card:hover { transform: translateY(-5px); border-color: var(--line-2); box-shadow: 0 24px 60px -30px rgba(0,0,0,.8); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.card-head h3 { font-size: 1.35rem; letter-spacing: -.01em; }
.badge {
  font-family: var(--mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .06em;
  padding: .28rem .55rem; border-radius: 6px; white-space: nowrap;
}
.badge-live { color: var(--accent); background: rgba(86,224,200,.12); border: 1px solid rgba(86,224,200,.3); }
.badge-alpha { color: var(--accent-3); background: rgba(201,243,103,.1); border: 1px solid rgba(201,243,103,.28); }
.badge-build { color: var(--ink-soft); background: rgba(255,255,255,.05); border: 1px solid var(--line-2); }
.card-tag { font-weight: 600; color: var(--ink); font-size: 1rem; }
.card p { color: var(--ink-soft); font-size: .93rem; }
.card-foot { margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: .8rem; }
.chip {
  font-size: .74rem; color: var(--accent); background: rgba(86,224,200,.06);
  border: 1px solid rgba(86,224,200,.18); border-radius: 7px; padding: .4rem .6rem; align-self: flex-start;
}
.card-links { display: flex; gap: 1.1rem; align-items: center; }
.card-links a { font-size: .85rem; color: var(--ink); border-bottom: 1px solid var(--line-2); padding-bottom: 1px; transition: color .25s, border-color .25s; }
.card-links a:hover { color: var(--accent); border-color: var(--accent); }
.soon { font-size: .82rem; color: var(--ink-mute); font-family: var(--mono); }

/* ---- Doctrine ---- */
.doctrine { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 2.4rem; margin-top: 2.6rem; }
.drow { display: grid; grid-template-columns: auto 1fr; gap: 1rem; padding: 1.2rem 0; border-top: 1px solid var(--line); }
.drow .mono { color: var(--accent); font-size: 1.1rem; }
.drow b { display: block; font-size: 1.05rem; margin-bottom: .25rem; }
.drow span { color: var(--ink-soft); font-size: .94rem; }

/* ---- CTA ---- */
.section-cta { background: radial-gradient(70% 120% at 50% 0%, rgba(86,224,200,.07), transparent 60%); }
.contact-actions { display: flex; gap: .9rem; flex-wrap: wrap; justify-content: center; margin-top: 2rem; }

/* =========================== FOOTER =========================== */
.footer { border-top: 1px solid var(--line); padding: 2.6rem clamp(1.2rem, 5vw, 3rem); }
.footer-grid { display: flex; justify-content: space-between; align-items: flex-end; gap: 2rem; flex-wrap: wrap; }
.footer-brand { font-size: 1rem; }
.footer-note { color: var(--ink-mute); font-size: .85rem; margin-top: .5rem; max-width: 40ch; }
.footer-meta { font-size: .78rem; color: var(--ink-mute); text-align: right; line-height: 1.7; }

/* =========================== REVEAL =========================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* =========================== RESPONSIVE =========================== */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .lead-grid, .thesis-grid, .doctrine { grid-template-columns: 1fr; }
  .pillars, .cards { grid-template-columns: 1fr; }
  .loop { grid-template-columns: 1fr; }
  .loop-dial { width: 280px; height: 280px; }
}
@media (max-width: 560px) {
  .hero-stats { gap: 1.4rem; }
  .footer-grid { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}