/* ============================================================
   ISOMORPH LABS — Obsidian Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
  --void:   #0B0C11;
  --slab:   #161820;
  --panel:  #1E2030;
  --chalk:  #F2F1EC;
  --ash:    #A0A8BA;
  --signal: #00D4AA;
  --pulse:  #7B5CF3;
  --ember:  #F97316;
  --grid:   #2A2D3E;
  --body-t: #1A1D2E;
  --dust:   #6B7280;

  --font: 'Space Grotesk', system-ui, sans-serif;
  --nav-h: 64px;
  --section-pad: clamp(80px, 10vw, 140px);
  --max-w: 1140px;
  --side-pad: clamp(20px, 5vw, 60px);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--void);
  color: var(--chalk);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ── Nav ── */
.nav-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--side-pad);
  background: rgba(11, 12, 17, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--grid);
}
.wordmark { display: flex; flex-direction: row; align-items: center; gap: 10px; }
.nav-mark { display: block; width: 30px; height: 30px; flex-shrink: 0; }
.wordmark-words { display: flex; flex-direction: column; line-height: 1.1; }
.wordmark-m {
  font-size: 15px; font-weight: 700; letter-spacing: 0.18em;
  color: var(--signal);
}
.wordmark-l {
  font-size: 10px; font-weight: 400; letter-spacing: 0.28em;
  color: var(--ash);
}
.nav-bar nav {
  display: flex; align-items: center; gap: 30px;
}
.nav-bar nav a {
  font-size: 13px; font-weight: 500; letter-spacing: 0.06em;
  color: var(--ash); transition: color 0.2s;
}
.nav-bar nav a:hover { color: var(--chalk); }
.nav-bar nav a.active { color: var(--chalk); }
.nav-cta {
  padding: 7px 18px; border: 1px solid var(--signal);
  border-radius: 2px; color: var(--signal) !important;
  font-size: 12px !important; letter-spacing: 0.12em !important;
  transition: background 0.2s, color 0.2s !important;
}
.nav-cta:hover { background: var(--signal); color: var(--void) !important; }
.nav-cta.active { background: var(--signal); color: var(--void) !important; }
.nav-toggle { display: none; background: none; border: none;
  color: var(--chalk); font-size: 20px; cursor: pointer; }

/* ── Home hero ── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: flex-start;
  padding: calc(var(--nav-h) + clamp(32px, 7vh, 96px)) var(--side-pad) 80px;
  overflow: hidden;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 680px;
  margin-left: clamp(0px, 4vw, 56px);
}
.hero-tag {
  display: inline-block;
  font-size: 11px; font-weight: 500; letter-spacing: 0.22em;
  color: var(--signal); text-transform: uppercase;
  margin-bottom: 28px;
  padding-left: 18px;
  border-left: 2px solid var(--signal);
}
.hero h1 {
  font-size: clamp(42px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--chalk);
  margin-bottom: 24px;
}
.hero h1 .accent { color: var(--signal); }
.hero-sub {
  font-size: clamp(16px, 1.8vw, 18px);
  color: var(--ash);
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  padding: 14px 32px; background: var(--signal); color: var(--void);
  font-family: var(--font); font-size: 13px; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; border-radius: 2px;
  transition: opacity 0.2s;
}
.btn-primary:hover { opacity: 0.85; }
.btn-ghost {
  padding: 14px 32px; border: 1px solid var(--grid); color: var(--ash);
  font-family: var(--font); font-size: 13px; font-weight: 500;
  letter-spacing: 0.08em; border-radius: 2px;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--ash); color: var(--chalk); }

.hero-rule {
  position: absolute; bottom: 0; left: var(--side-pad); right: 0;
  height: 1px; background: var(--grid);
}

/* ── Sub-page hero ── */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + clamp(52px, 8vh, 104px)) var(--side-pad) clamp(48px, 7vw, 84px);
  background: var(--void);
  border-bottom: 1px solid var(--grid);
  overflow: hidden;
}
.page-hero-inner {
  max-width: var(--max-w); margin: 0 auto;
  position: relative; z-index: 2;
  /* Reserve the .page-hero-mark stripe width (+32px gap) so the heading
     never runs under the decorative gray box on the right. */
  padding-right: calc(clamp(70px, 12vw, 180px) - var(--side-pad) + 32px);
}
.page-hero h1 {
  font-size: clamp(38px, 6vw, 66px);
  font-weight: 700; line-height: 1.08; letter-spacing: -0.01em;
  color: var(--chalk);
  margin-bottom: 22px;
}
.page-hero h1 .accent { color: var(--signal); }
.page-hero-sub {
  font-size: clamp(16px, 1.7vw, 18px);
  color: var(--ash); line-height: 1.7;
  max-width: 600px;
}
.page-hero-mark {
  position: absolute; right: 0; top: 0; bottom: 0;
  width: clamp(70px, 12vw, 180px);
  background: var(--slab);
  border-left: 2px solid rgba(0, 212, 170, 0.18);
  z-index: 1;
}

/* ── Sections ── */
.section {
  padding: var(--section-pad) var(--side-pad);
  background: var(--void);
}
.section-dark { background: var(--slab); }
.section-tight { padding-top: clamp(56px, 7vw, 96px); }
.section-inner { max-width: var(--max-w); margin: 0 auto; }
.section-label {
  font-size: 11px; font-weight: 500; letter-spacing: 0.28em;
  color: var(--signal); text-transform: uppercase;
  margin-bottom: 20px;
}
.section h2 {
  font-size: clamp(30px, 5vw, 50px);
  font-weight: 700; line-height: 1.1; letter-spacing: -0.01em;
  color: var(--chalk);
  margin-bottom: 24px;
}
.section-intro {
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--ash); line-height: 1.75;
  max-width: 620px;
  margin-bottom: 56px;
}
.prose { max-width: 660px; }
.prose p {
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--ash); line-height: 1.85;
  margin-bottom: 22px;
}
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--chalk); font-weight: 700; }
.prose .accent { color: var(--signal); font-weight: 700; }
.prose-link {
  color: var(--signal); font-weight: 600;
  border-bottom: 1px solid rgba(0, 212, 170, 0.35);
  transition: border-color 0.2s;
}
.prose-link:hover { border-bottom-color: var(--signal); }

.section-link {
  display: inline-flex; align-items: center; gap: 10px;
  margin-top: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--signal);
  transition: gap 0.2s;
}
.section-link::after { content: '\2192'; font-size: 15px; }
.section-link:hover { gap: 16px; }

/* ── Service / generic cards ── */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--grid);
  border-top: 3px solid var(--grid);
  padding: 40px 36px;
  border-radius: 2px;
}
.card-accent { border-top-color: var(--signal); }
.card-pulse { border-top-color: var(--pulse); }
.card-num {
  font-size: 11px; font-weight: 700; letter-spacing: 0.2em;
  color: var(--signal); margin-bottom: 16px;
}
.card h3 {
  font-size: 22px; font-weight: 700; color: var(--chalk);
  margin-bottom: 16px;
}
.card p {
  font-size: 15px; color: var(--ash); line-height: 1.7;
  margin-bottom: 28px;
}
.card p:last-child { margin-bottom: 0; }
.card-list {
  list-style: none; display: flex; flex-direction: column; gap: 10px;
}
.card-list li {
  font-size: 13px; color: var(--ash); letter-spacing: 0.03em;
  padding-left: 20px; position: relative;
}
.card-list li::before {
  content: '\2014';
  position: absolute; left: 0;
  color: var(--signal);
}

/* ── Tech grid ── */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.tech-item {
  background: var(--panel);
  border: 1px solid var(--grid);
  border-left: 3px solid var(--signal);
  padding: 32px 28px;
  border-radius: 2px;
}
.tech-item h4 {
  display: flex; align-items: baseline; gap: 12px;
  font-size: 17px; font-weight: 700; color: var(--chalk);
  margin-bottom: 12px;
  line-height: 1.3;
}
.tech-item h4::before {
  content: '\25A0';
  font-size: 10px; color: var(--signal);
  flex-shrink: 0;
}
.tech-item p {
  font-size: 14px; color: var(--ash); line-height: 1.75;
}
.tech-item p + p { margin-top: 14px; }

/* ── Principle / value blocks ── */
.team-blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.team-block {
  padding: 32px 28px;
  border: 1px solid var(--grid);
  border-radius: 2px;
  background: var(--panel);
}
.team-block-accent { border-color: var(--pulse); }
.team-block h4 {
  font-size: 15px; font-weight: 700; letter-spacing: 0.04em;
  color: var(--chalk); margin-bottom: 12px;
}
.team-block p {
  font-size: 14px; color: var(--ash); line-height: 1.75;
}
.team-note {
  display: flex; align-items: center; gap: 14px;
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--chalk); font-style: italic;
  line-height: 1.6;
  margin-top: clamp(48px, 7vw, 88px);
}
.pulse-dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--signal); flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(0,212,170,0.2);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(0,212,170,0.2); }
  50%       { box-shadow: 0 0 0 6px rgba(0,212,170,0.06); }
}

/* ── Fact row ── */
.fact-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
  border-radius: 2px;
  overflow: hidden;
}
.fact {
  background: var(--void);
  padding: 30px 28px;
}
.fact-k {
  font-size: 11px; font-weight: 500; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--signal);
  margin-bottom: 12px;
}
.fact-v {
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700; color: var(--chalk); line-height: 1.3;
}

/* ── Step list ── */
.step-list {
  display: flex; flex-direction: column;
  border-top: 1px solid var(--grid);
}
.step {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: clamp(16px, 3vw, 40px);
  padding: 32px 4px;
  border-bottom: 1px solid var(--grid);
}
.step-num {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700; color: var(--signal);
  letter-spacing: -0.01em; line-height: 1;
}
.step-body h4 {
  font-size: 18px; font-weight: 700; color: var(--chalk);
  margin-bottom: 10px;
}
.step-body p {
  font-size: 14px; color: var(--ash); line-height: 1.75;
  max-width: 620px;
}

/* ── Platform / coming soon ── */
.status-pill {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--signal);
  padding: 7px 15px;
  border: 1px solid rgba(0, 212, 170, 0.35);
  border-radius: 2px;
  margin-bottom: 28px;
}
.planned-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.planned-card {
  background: var(--panel);
  border: 1px solid var(--grid);
  padding: 32px 28px;
  border-radius: 2px;
  position: relative;
}
.planned-tag {
  display: inline-block;
  font-size: 10px; font-weight: 600; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--dust);
  border: 1px solid var(--grid);
  padding: 3px 9px; border-radius: 2px;
  margin-bottom: 18px;
}
.planned-tag--live {
  color: var(--signal);
  border-color: rgba(0, 212, 170, 0.35);
}
.planned-card h4 {
  font-size: 18px; font-weight: 700; color: var(--chalk);
  margin-bottom: 12px;
}
.planned-card p {
  font-size: 14px; color: var(--ash); line-height: 1.75;
}

/* ── CTA band ── */
.cta-band {
  background: var(--slab);
  border-top: 1px solid var(--grid);
  padding: clamp(64px, 9vw, 110px) var(--side-pad);
}
.cta-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 40px; flex-wrap: wrap;
}
.cta-inner h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700; line-height: 1.12; letter-spacing: -0.01em;
  color: var(--chalk);
  max-width: 560px;
}
.cta-inner h2 .accent { color: var(--signal); }

/* ── Contact ── */
.section-contact { position: relative; overflow: hidden; }
.contact-inner { position: relative; z-index: 2; }
.contact-email {
  display: inline-block;
  font-size: clamp(18px, 3vw, 28px);
  font-weight: 700; color: var(--signal);
  letter-spacing: -0.01em;
  border-bottom: 1px solid rgba(0,212,170,0.3);
  padding-bottom: 4px;
  transition: border-color 0.2s;
  margin-bottom: 28px;
}
.contact-email:hover { border-color: var(--signal); }
.contact-note {
  font-size: 13px; color: var(--ash); letter-spacing: 0.06em;
}
.contact-accent {
  position: absolute; right: 0; top: 0; bottom: 0;
  width: clamp(60px, 10vw, 140px); z-index: 1; pointer-events: none;
}
.ca-block {
  width: 100%; height: 100%;
  background: var(--panel);
  border-left: 2px solid rgba(0,212,170,0.15);
}

/* ── Footer ── */
.footer {
  background: var(--void);
  border-top: 1px solid var(--grid);
  padding: 44px var(--side-pad) 32px;
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
}
.footer-top {
  display: flex; align-items: flex-start; justify-content: space-between;
  flex-wrap: wrap; gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--grid);
}
.footer-wordmark { display: flex; flex-direction: row; align-items: center; gap: 9px; }
.footer-mark { display: block; width: 24px; height: 24px; flex-shrink: 0; opacity: 0.85; }
.footer-nav {
  display: flex; flex-wrap: wrap; gap: 22px;
}
.footer-nav a {
  font-size: 12px; font-weight: 500; letter-spacing: 0.06em;
  color: var(--ash); transition: color 0.2s;
}
.footer-nav a:hover { color: var(--chalk); }
.footer-meta {
  font-size: 12px; color: var(--dust); letter-spacing: 0.04em;
  padding-top: 24px;
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── Nav scroll state ── */
.nav-bar.scrolled { background: rgba(11, 12, 17, 0.98); }

/* ── Responsive ── */
@media (max-width: 760px) {
  .nav-bar nav { display: none; }
  .nav-bar nav.open {
    display: flex; flex-direction: column; align-items: flex-start;
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: var(--slab); border-bottom: 1px solid var(--grid);
    padding: 24px var(--side-pad); gap: 20px; z-index: 99;
  }
  .nav-toggle { display: block; }
  .hero-content { margin-left: 0; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-ghost { text-align: center; }
  .tech-grid { grid-template-columns: 1fr; gap: 16px; }
  .step { grid-template-columns: 56px 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}