/* Neithlogic Solutions — parent company site.
   Same family as Wraith (paper, ink, serif) but its own architecture:
   dark ink bookends, left-aligned editorial body, mono N/xx indexing. */

:root {
  --paper: #faf9f6;
  --ink: #141410;
  --ink-soft: #1d1d17;
  --ink-line: #33332a;
  --ink-muted: #a3a399;
  --muted: #71716a;
  --line: #e6e4dd;
  --green: #0c6b45;
  --green-bright: #8cf2c0;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── dark panels (hero + contact bookends) ── */
.panel-dark {
  background: var(--ink);
  color: var(--paper);
  /* faint dot grid — the "logic" texture */
  background-image: radial-gradient(rgba(250, 249, 246, 0.07) 1px, transparent 1px);
  background-size: 26px 26px;
}

/* ── nav ── */
.nav {
  max-width: 1120px;
  margin: 0 auto;
  padding: 30px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  text-decoration: none;
  font-weight: 650;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.brand .mark { width: 24px; height: 24px; color: var(--green-bright); }
.nav nav { display: flex; gap: 30px; }
.nav nav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 14.5px;
}
.nav nav a:hover { color: var(--paper); }

/* ── hero ── */
.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 110px 32px 120px;
}
.crumb {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--green-bright);
  margin-bottom: 34px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(52px, 9vw, 104px);
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.hero .lede {
  max-width: 560px;
  color: var(--ink-muted);
  font-size: 18px;
  margin-top: 36px;
}
.hero-foot {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.btn-paper {
  display: inline-block;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  padding: 14px 30px;
  border-radius: 10px;
}
.btn-paper:hover { opacity: 0.88; }
.hero-mail {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-line);
  padding-bottom: 2px;
}
.hero-mail:hover { color: var(--paper); }

/* ── capabilities ── */
.cap-section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 110px 32px 40px;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 60px;
}
.cap-intro h2, .prod-section h2, .how-section h2, .contact h2 {
  font-family: var(--serif);
  font-weight: 550;
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -0.015em;
}
.cap-intro p { color: var(--muted); margin-top: 14px; font-size: 15px; }
.cap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
.cap {
  padding: 32px 28px 36px 0;
  border-bottom: 1px solid var(--line);
}
.cap:nth-child(odd) { border-right: 1px solid var(--line); padding-right: 32px; }
.cap:nth-child(even) { padding-left: 32px; }
.cap-n {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--green);
}
.cap h3 { font-size: 17px; margin: 12px 0 8px; }
.cap p { color: var(--muted); font-size: 14.5px; }

/* ── proof strip ── */
.proof {
  max-width: 1120px;
  margin: 60px auto 0;
  padding: 44px 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.proof-item strong {
  display: block;
  font-family: var(--serif);
  font-weight: 500;
  font-size: 42px;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.proof-item span { color: var(--muted); font-size: 13.5px; }

/* ── products ── */
.prod-section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 110px 32px 30px;
}
.prod {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  margin-top: 48px;
  align-items: center;
}
.prod-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--green);
}
.prod-info h3 {
  font-family: var(--serif);
  font-weight: 550;
  font-size: 32px;
  margin: 10px 0 16px;
  letter-spacing: -0.015em;
}
.prod-desc { color: var(--muted); max-width: 520px; }
.prod-pricing {
  display: flex;
  gap: 10px 26px;
  flex-wrap: wrap;
  margin: 26px 0 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}
.prod-pricing b {
  font-family: var(--serif);
  font-weight: 550;
  font-size: 17px;
  color: var(--ink);
}
.prod-fine { color: var(--muted); font-size: 13px; max-width: 520px; }
.btn-ink {
  display: inline-block;
  margin-top: 24px;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-weight: 550;
  font-size: 15px;
  padding: 13px 28px;
  border-radius: 10px;
}
.btn-ink:hover { opacity: 0.86; }

/* chat visual */
.prod-visual { display: flex; justify-content: center; }
.chat-card {
  width: 100%;
  max-width: 340px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 30px 70px -40px rgba(20, 20, 16, 0.55);
}
.chat-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.chat-head .mark { width: 30px; height: 30px; color: var(--green-bright); }
.chat-head b { display: block; font-size: 15px; }
.chat-head i { font-style: normal; color: var(--ink-muted); font-size: 12px; }
.chat-line { font-size: 14px; padding: 7px 0; border-top: 1px solid var(--ink-line); }
.chat-line:first-of-type { border-top: none; }
.chat-line.dim { color: var(--ink-muted); }
.chat-line.more { color: var(--green-bright); font-size: 12.5px; font-family: var(--mono); }

.prod-next {
  display: flex;
  gap: 24px;
  align-items: baseline;
  margin-top: 70px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.prod-next p { color: var(--muted); font-size: 14.5px; max-width: 640px; }

/* ── principles ── */
.how-section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 110px 32px 130px;
}
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 44px;
  margin-top: 44px;
}
.principle h3 {
  font-family: var(--serif);
  font-weight: 550;
  font-size: 20px;
  margin-bottom: 10px;
}
.principle p { color: var(--muted); font-size: 14.5px; }

/* ── contact (dark) ── */
.contact {
  max-width: 1120px;
  margin: 0 auto;
  padding: 100px 32px 50px;
}
.contact h2 { color: var(--paper); }
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 44px;
  margin-top: 48px;
}
.contact-grid h3 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--green-bright);
  margin-bottom: 14px;
  font-weight: 500;
}
.contact-grid p { color: var(--ink-muted); font-size: 15px; line-height: 1.85; }
.contact-grid a { color: var(--paper); text-decoration: none; border-bottom: 1px solid var(--ink-line); }
.contact-grid a:hover { border-color: var(--paper); }
.foot-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 80px;
  padding-top: 28px;
  border-top: 1px solid var(--ink-line);
  color: var(--ink-muted);
  font-size: 13px;
}
.foot-mark .mark { width: 22px; height: 22px; color: var(--ink-muted); }

/* ── mobile ── */
@media (max-width: 780px) {
  .nav { padding: 22px 20px; }
  .nav nav { gap: 18px; }
  .hero { padding: 70px 20px 80px; }
  .hero .lede { font-size: 16.5px; }
  .cap-section { grid-template-columns: 1fr; gap: 28px; padding: 72px 20px 20px; }
  .cap-grid { grid-template-columns: 1fr; }
  .cap:nth-child(odd) { border-right: none; padding-right: 0; }
  .cap:nth-child(even) { padding-left: 0; }
  .cap { padding-left: 0; padding-right: 0; }
  .proof { grid-template-columns: repeat(2, 1fr); padding: 36px 20px; }
  .prod-section, .how-section { padding: 72px 20px 20px; }
  .how-section { padding-bottom: 90px; }
  .prod { grid-template-columns: 1fr; gap: 40px; }
  .prod-next { flex-direction: column; gap: 10px; margin-top: 50px; }
  .contact { padding: 70px 20px 40px; }
  .foot-line { flex-direction: column; gap: 14px; }
}