/* Human Network, Inc — global styles */
:root {
  /* Warm dark palette — default */
  --bg: #0E0A07;
  --bg-2: #16100A;
  --bg-3: #1F160E;
  --line: rgba(244, 195, 107, 0.10);
  --line-strong: rgba(244, 195, 107, 0.22);
  --ink: #F4EBDA;
  --ink-dim: #B8A98F;
  --ink-faint: #786A55;
  --accent: #FF7A45;
  --accent-2: #F4C36B;
  --accent-warm: #FF7A45;
  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1240px;
  --pad: 32px;

  --font-display: "Instrument Serif", "Times New Roman", serif;
  --font-sans: "Geist", "Inter", system-ui, sans-serif;
  --font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* Light theme override */
body.theme-light {
  --bg: #FAFAF7;
  --bg-2: #F2F1EC;
  --bg-3: #E8E6DE;
  --line: rgba(15, 18, 28, 0.08);
  --line-strong: rgba(15, 18, 28, 0.18);
  --ink: #0F121C;
  --ink-dim: #4B5260;
  --ink-faint: #8A8F9C;
}

.mono { font-family: var(--font-mono); font-feature-settings: "ss01", "cv11"; }
.serif { font-family: var(--font-display); font-style: italic; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 12px var(--accent-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost {
  border: 1px solid var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--ink); background: var(--bg-2); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
  background: color-mix(in oklab, var(--bg-2) 70%, transparent);
}

/* ===== NAV ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 75%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 26px; height: 26px;
  position: relative;
}
.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--ink-dim);
}
.nav-links a:hover { color: var(--ink); }

/* ===== HERO ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 80px 0 100px;
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(48px, 6.4vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 24px 0 24px;
  color: var(--ink);
}
.hero h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero-sub {
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink-dim);
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 12px; align-items: center; }
.hero-meta {
  margin-top: 56px;
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.hero-meta-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--ink-faint);
}

.hero-vis {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  background:
    radial-gradient(circle at 65% 35%, color-mix(in oklab, var(--accent) 14%, transparent), transparent 55%),
    radial-gradient(circle at 25% 75%, color-mix(in oklab, var(--accent-2) 10%, transparent), transparent 55%);
  overflow: visible;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-vis-logo {
  width: 56%;
  height: auto;
  filter: drop-shadow(0 12px 40px color-mix(in oklab, var(--accent) 50%, transparent));
  position: relative;
  z-index: 1;
}
.hero-vis-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.hero-vis-rings {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-vis-rings span {
  position: absolute;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}
.hero-vis-rings span:nth-child(1) { width: 38%; height: 38%; }
.hero-vis-rings span:nth-child(2) { width: 60%; height: 60%; opacity: 0.7; }
.hero-vis-rings span:nth-child(3) { width: 84%; height: 84%; opacity: 0.4; }
.hero-vis-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, var(--bg) 100%);
  pointer-events: none;
}
.hero-vis-corner {
  position: absolute;
  top: 14px; left: 14px;
  display: flex; gap: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.hero-vis-readout {
  position: absolute;
  bottom: 14px;
  left: 14px; right: 14px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  z-index: 2;
}
.hero-vis-readout .num { color: var(--accent-2); }

/* ===== SECTION ===== */
.section {
  padding: 100px 0;
  border-bottom: 1px solid var(--line);
}
.section-head {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  margin-bottom: 56px;
  align-items: end;
}
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(36px, 4.4vw, 56px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
}
.section-head h2 em { font-style: italic; color: var(--accent); }
.section-head p {
  color: var(--ink-dim);
  font-size: 17px;
  line-height: 1.55;
  max-width: 560px;
}

/* ===== PILLARS / WHAT WE DO ===== */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
}
.pillar {
  padding: 36px 32px 40px;
  border-right: 1px solid var(--line);
  position: relative;
  transition: background .25s ease;
}
.pillar:last-child { border-right: none; }
.pillar:hover { background: var(--bg-3); }
.pillar-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  margin-bottom: 60px;
  display: block;
}
.pillar h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 32px;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
.pillar p {
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
}
.pillar-icon {
  position: absolute;
  top: 32px; right: 32px;
  width: 36px; height: 36px;
  color: var(--accent);
}

/* ===== PLATFORM ===== */
.platform {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: stretch;
}
.platform-side {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.platform-tab {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 22px 20px;
  border-top: 1px solid var(--line);
  cursor: pointer;
  transition: background .2s ease, padding-left .2s ease;
}
.platform-tab:last-child { border-bottom: 1px solid var(--line); }
.platform-tab:hover { background: var(--bg-2); }
.platform-tab.active { background: var(--bg-2); padding-left: 28px; }
.platform-tab-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}
.platform-tab.active .platform-tab-num { color: var(--accent-2); }
.platform-tab-title {
  font-size: 18px;
  letter-spacing: -0.01em;
}
.platform-tab-arrow {
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 14px;
  opacity: 0;
  transition: opacity .2s, transform .2s;
}
.platform-tab.active .platform-tab-arrow { opacity: 1; transform: translateX(4px); color: var(--accent); }

.platform-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-2);
  padding: 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  min-height: 480px;
}
.platform-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}
.platform-panel h4 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 30px;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
}
.platform-panel p {
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.55;
  margin: 0 0 24px;
}
.platform-bullets {
  list-style: none;
  padding: 0; margin: 0 0 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.platform-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--ink);
}
.platform-bullets li::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  margin-top: 8px;
  background: var(--accent-2);
  border-radius: 1px;
  flex-shrink: 0;
}
.platform-mock {
  margin-top: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-dim);
  position: relative;
}
.platform-mock .k { color: var(--accent); }
.platform-mock .v { color: var(--accent-2); }
.platform-mock .c { color: var(--ink-faint); }

/* ===== HOW IT WORKS ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.steps::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 6%; right: 6%;
  height: 1px;
  background: repeating-linear-gradient(to right, var(--line-strong) 0 6px, transparent 6px 12px);
}
.step {
  position: relative;
}
.step-dot {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-2);
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}
.step h4 {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}
.step p {
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.55;
  margin: 0;
}

/* ===== USE CASES ===== */
.usecases {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.usecase {
  background: var(--bg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background .2s ease;
}
.usecase:hover { background: var(--bg-2); }
.usecase-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.usecase-head .name {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.usecase h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 6px 0 6px;
}
.usecase p {
  color: var(--ink-dim);
  font-size: 14.5px;
  line-height: 1.55;
  margin: 0;
}
.usecase-stat {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.usecase-stat .num {
  font-family: var(--font-display);
  font-size: 38px;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.usecase-stat .lbl {
  color: var(--ink-dim);
  font-size: 13px;
}

/* ===== STATS STRIP ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
}
.stat {
  padding: 32px 28px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: none; }
.stat .num {
  font-family: var(--font-display);
  font-size: 56px;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
}
.stat .num em { color: var(--accent); font-style: normal; }
.stat .lbl {
  margin-top: 12px;
  color: var(--ink-dim);
  font-size: 13.5px;
  line-height: 1.5;
}

/* ===== LOGOS ===== */
.logos {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.logo-cell {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 16px;
  letter-spacing: -0.01em;
  font-weight: 500;
  opacity: 0.7;
  transition: opacity .2s, color .2s;
}
.logo-cell:last-child { border-right: none; }
.logo-cell:hover { opacity: 1; color: var(--ink); }

/* ===== TESTIMONIAL ===== */
.quote {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 56px 64px;
  background:
    radial-gradient(circle at 90% 10%, color-mix(in oklab, var(--accent) 10%, transparent), transparent 50%),
    var(--bg-2);
}
.quote blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.quote-attr {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.quote-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  flex-shrink: 0;
}

/* ===== CTA ===== */
.cta {
  padding: 120px 0;
  text-align: center;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.cta h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(48px, 6vw, 96px);
  line-height: 1;
  letter-spacing: -0.025em;
  margin: 16px 0 28px;
}
.cta h2 em { font-style: italic; color: var(--accent); }
.cta p {
  color: var(--ink-dim);
  font-size: 18px;
  max-width: 520px;
  margin: 0 auto 40px;
}
.cta-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.6;
}

/* ===== FOOTER ===== */
.footer {
  padding: 80px 0 32px;
  background: var(--bg);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line);
}
.footer-brand h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 28px;
  letter-spacing: -0.01em;
  margin: 16px 0 12px;
}
.footer-brand p {
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.55;
  max-width: 320px;
}
.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 18px;
  font-weight: 500;
}
.footer-col ul {
  list-style: none;
  padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 10px;
}
.footer-col a {
  color: var(--ink-dim);
  font-size: 14px;
}
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 980px) {
  .hero-grid, .section-head, .platform, .footer-top { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { border-right: none; border-bottom: 1px solid var(--line); }
  .pillar:last-child { border-bottom: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .steps::before { display: none; }
  .usecases { grid-template-columns: 1fr; }
  .logos { grid-template-columns: repeat(3, 1fr); }
  .nav-links { display: none; }
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s ease, transform .8s ease;
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}