/* ─── RESET & BASE ─────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: #0a0a0b;
  color: #e8e8e8;
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: #00a8ff; text-decoration: none; transition: color .2s; }
a:hover { color: #33bbff; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 1.5rem; }

/* ─── NAV ──────────────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,10,11,.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
nav .wrap { display: flex; justify-content: space-between; align-items: center; height: 56px; }
.nav-logo { display: flex; align-items: center; }
.nav-logo-img { height: 36px; width: auto; filter: drop-shadow(0 0 6px rgba(0,168,255,.3)); transition: filter .2s; }
.nav-logo:hover .nav-logo-img { filter: drop-shadow(0 0 10px rgba(0,168,255,.5)); }
.nav-links { list-style: none; display: flex; gap: 1.5rem; }
.nav-links a { font-size: .85rem; color: #888; font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: #e8e8e8; }

/* ─── HERO ─────────────────────────────────────────────────────── */
#hero {
  position: relative; min-height: auto;
  display: flex; flex-direction: column; padding-top: 56px;
}
.hero-banner {
  position: relative; width: 100%; overflow: hidden;
}
.hero-banner__fade {
  position: absolute; bottom: 0; left: 0; right: 0; height: 150px;
  background: linear-gradient(to bottom, transparent, #0a0a0b);
  pointer-events: none;
}
.hero-content { max-width: 640px; display: flex; flex-direction: column; align-items: flex-start; padding: 2rem 0 4rem; }
.hero-video {
  display: block; width: 100%; height: auto;
}
.hero-wordmark {
  max-width: 480px; width: 100%; height: auto; margin-bottom: 1.5rem;
  border-radius: 4px;
}
.hero-tag {
  font-family: 'JetBrains Mono', monospace; font-size: .75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .15em; color: #00a8ff; margin-bottom: 1rem;
}
#hero h1 {
  font-family: 'Inter', sans-serif; font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800; line-height: 1.1; margin-bottom: 1.25rem; color: #fff;
}
#hero h1 em { font-style: normal; color: #00a8ff; }
.hero-sub { font-size: 1.1rem; color: #999; max-width: 520px; margin-bottom: 2rem; }
.hero-cta {
  display: inline-flex; align-items: center; gap: .5rem; padding: .75rem 1.5rem;
  background: #00a8ff; color: #0a0a0b; font-weight: 700; font-size: .9rem;
  border-radius: 6px; transition: background .2s, transform .15s;
}
.hero-cta:hover { background: #33bbff; color: #0a0a0b; transform: translateY(-1px); }
.hero-cta svg { width: 18px; height: 18px; }

/* ─── SECTIONS ─────────────────────────────────────────────────── */
section { padding: 6rem 0; }
.section-label {
  font-family: 'JetBrains Mono', monospace; font-size: .75rem;
  color: #555; text-transform: uppercase; letter-spacing: .1em; margin-bottom: .75rem;
}
section h2 {
  font-family: 'Inter', sans-serif; font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800; color: #fff; margin-bottom: 1rem;
}
.section-intro { font-size: 1.05rem; color: #888; max-width: 520px; margin-bottom: 2rem; }
.divider { height: 1px; background: rgba(255,255,255,.08); margin-bottom: 2rem; }

/* ─── PROJECT CARDS (2×2 grid) ─────────────────────────────────── */
.project-grid { display: grid; grid-template-columns: 1fr; gap: .75rem; }
@media (min-width: 700px) { .project-grid { grid-template-columns: 1fr 1fr 1fr; } }

.project-card {
  display: flex; flex-direction: column; gap: .4rem;
  padding: 1rem 1.1rem; background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.06); border-radius: 8px;
  transition: border-color .3s, transform .2s, background .3s;
  color: inherit;
}
a.project-card:hover {
  border-color: rgba(0,168,255,.3); transform: translateY(-2px);
  background: rgba(0,168,255,.04);
}
.project-card__icon svg { width: 22px; height: 22px; fill: #00a8ff; }
.project-card__icon--accent svg { fill: #ff6b35; }
.project-card__icon--shapes svg { fill: #a855f7; }
.project-card__icon--booker svg { fill: #4ade80; }
.project-card__icon--minerva svg { fill: #f59e0b; }
.project-card__icon--trophys svg { fill: #f472b6; }
.project-card__icon--sulcus svg { fill: #336791; }
.project-card__icon--insider svg { fill: #ee802f; }
.project-card__title {
  font-family: 'JetBrains Mono', monospace; font-size: .82rem; font-weight: 600; color: #fff;
}
.project-card__desc { font-size: .75rem; color: #999; line-height: 1.5; flex: 1; }
.project-card__tags { display: flex; flex-wrap: wrap; gap: .25rem; }
.project-card__tags span {
  font-family: 'JetBrains Mono', monospace; font-size: .55rem; color: #666;
  padding: .12rem .35rem; border: 1px solid rgba(255,255,255,.08); border-radius: 3px;
}
.project-card__link {
  font-size: .7rem; color: #00a8ff; font-weight: 500; margin-top: .25rem;
}
.project-card__link--internal { color: #555; font-style: italic; }

/* ─── ARCHITECTURE ─────────────────────────────────────────────── */
.arch-diagram {
  margin: 3rem 0; padding: 2rem;
  background: rgba(255,255,255,.02); border: 1px solid rgba(255,255,255,.06);
  border-radius: 10px;
}
.arch-row { display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap; }
.arch-node {
  display: flex; flex-direction: column; align-items: center; gap: .25rem;
  padding: .75rem 1.25rem; border-radius: 8px; min-width: 140px; text-align: center;
}
.arch-node--primary { background: rgba(0,168,255,.1); border: 1px solid rgba(0,168,255,.25); }
.arch-node--hub { background: rgba(255,107,53,.08); border: 1px solid rgba(255,107,53,.2); }
.arch-node--sub { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08); }
.arch-node--output { background: rgba(0,168,255,.05); border: 1px solid rgba(0,168,255,.12); }
.arch-node__label {
  font-family: 'JetBrains Mono', monospace; font-size: .8rem; font-weight: 600; color: #fff;
}
.arch-node__role { font-size: .7rem; color: #888; }
.arch-arrows {
  display: flex; justify-content: center; gap: 8rem; padding: .5rem 0;
  font-size: 1.2rem; color: #444;
}
.arch-arrows--down { gap: 4rem; }
.arch-arrow-center { color: #00a8ff; }

.arch-bullets {
  list-style: none; margin-top: 2.5rem; display: grid; gap: 1rem;
}
@media (min-width: 700px) { .arch-bullets { grid-template-columns: 1fr 1fr; } }
.arch-bullets li {
  font-size: .88rem; color: #999; padding-left: 1.25rem;
  position: relative; line-height: 1.5;
}
.arch-bullets li::before {
  content: '▸'; position: absolute; left: 0; color: #00a8ff; font-weight: bold;
}
.arch-bullets strong { color: #e8e8e8; }

/* ─── SUBSCRIBE ────────────────────────────────────────────────── */
#subscribe { text-align: center; }
.subscribe-inner { max-width: 420px; margin: 0 auto; }
.subscribe-inner .section-intro { margin-left: auto; margin-right: auto; }
.subscribe-form {
  display: flex; gap: .5rem; margin-top: 1.5rem;
}
.subscribe-form input {
  flex: 1; padding: .7rem 1rem; font-size: .9rem;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
  border-radius: 6px; color: #e8e8e8; font-family: 'Inter', sans-serif;
  outline: none; transition: border-color .2s;
}
.subscribe-form input:focus { border-color: rgba(0,168,255,.4); }
.subscribe-form input::placeholder { color: #555; }
.subscribe-form button {
  padding: .7rem 1.25rem; font-size: .85rem; font-weight: 600;
  background: rgba(0,168,255,.15); color: #00a8ff;
  border: 1px solid rgba(0,168,255,.25); border-radius: 6px;
  cursor: pointer; font-family: 'Inter', sans-serif; transition: all .2s;
}
.subscribe-form button:hover {
  background: rgba(0,168,255,.25); border-color: rgba(0,168,255,.4);
}
.subscribe-msg {
  font-size: .8rem; margin-top: .75rem; min-height: 1.2em;
}
.subscribe-msg--ok { color: #4ade80; }
.subscribe-msg--err { color: #f87171; }

/* ─── SUPPORT ──────────────────────────────────────────────────── */
#support { padding: 3rem 0; }
.support-inner { text-align: center; }
.support-heading {
  font-family: 'JetBrains Mono', monospace; font-size: .75rem;
  text-transform: uppercase; letter-spacing: .1em; color: #555; margin-bottom: 1rem;
}
.support-buttons { display: flex; justify-content: center; gap: .75rem; margin-bottom: 1.25rem; }
.support-btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .5rem 1rem; font-size: .8rem; color: #888;
  border: 1px solid rgba(255,255,255,.08); border-radius: 6px;
  transition: all .2s;
}
.support-btn:hover { color: #e8e8e8; border-color: rgba(255,255,255,.15); }
.support-btn__icon { width: 16px; height: 16px; fill: currentColor; }
.support-crypto { max-width: 500px; margin: 0 auto; }
.wallet {
  display: flex; align-items: center; gap: .5rem; justify-content: center;
  margin-bottom: .35rem; font-size: .7rem;
}
.coin {
  font-family: 'JetBrains Mono', monospace; font-weight: 600;
  min-width: 3rem; text-align: right; color: #555;
}
.wallet code {
  font-size: .65rem; color: #444; word-break: break-all;
  user-select: all; cursor: pointer;
}

/* ─── FOOTER ───────────────────────────────────────────────────── */
footer {
  border-top: 1px solid rgba(255,255,255,.06); padding: 2rem 0;
}
footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .5rem; }
.footer-left, .footer-right { font-size: .75rem; color: #444; }
.footer-left span { color: #666; }

/* ─── REVEAL ANIMATION ─────────────────────────────────────────── */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ─── RESEARCH PAPER ───────────────────────────────────────────── */
.paper-meta { background: #111; border-left: 3px solid #f90; padding: 1rem 1.25rem; margin: 1.5rem 0 2rem; font-size: .9rem; line-height: 1.6; }
.paper-footer { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid #222; font-size: .8rem; color: #666; }

/* ─── NDA ──────────────────────────────────────────────────────── */
.nda-container { max-width: 800px; margin: 0 auto; }
.nda-text { background: #0d0d0e; border: 1px solid #222; border-radius: 8px; padding: 2rem; margin: 1.5rem 0; max-height: 500px; overflow-y: auto; font-size: .85rem; line-height: 1.7; }
.nda-form { margin-top: 2rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; margin-bottom: .4rem; font-size: .9rem; color: #ccc; }
.form-group input[type="text"],
.form-group input[type="email"] { width: 100%; padding: .6rem .8rem; background: #111; border: 1px solid #333; border-radius: 4px; color: #eee; font-size: .9rem; }
.form-group input:focus { border-color: #f90; outline: none; }
.checkbox-group { display: flex; align-items: flex-start; gap: .6rem; }
.checkbox-group input[type="checkbox"] { margin-top: .3rem; accent-color: #f90; }
.checkbox-group label { font-size: .8rem; color: #aaa; line-height: 1.5; }
.nda-submit { display: inline-block; padding: .75rem 2rem; background: #f90; color: #000; border: none; border-radius: 4px; font-weight: 700; font-size: 1rem; cursor: pointer; margin-top: 1rem; }
.nda-submit:hover { background: #fa0; }
.nda-confirmed { text-align: center; padding: 3rem 0; }

/* ─── MOBILE ───────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .nav-links { gap: 1rem; }
  .nav-links a { font-size: .75rem; }
  section { padding: 4rem 0; }
  .arch-arrows { gap: 3rem; }
  .subscribe-form { flex-direction: column; }
  .wallet { flex-direction: column; gap: .15rem; }
  .coin { text-align: center; }
}