/* =========================================================
   Narthoverina — design system
   Motif: the design tool canvas + the printed page.
   Dark sections read as an app canvas (dot grid, artboards,
   crop-mark corners, spec chips). Light sections read as a
   printed PDF page (paper, hairline rules, serif-free body
   copy) — a nod to the fact every product is a PDF guide.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;1,400&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  /* canvas (dark) */
  --ink: #14161a;
  --ink-raised: #1b1e24;
  --ink-line: #2c303a;
  --on-ink: #f1ede3;
  --on-ink-dim: #9ba0ac;

  /* page (light) */
  --paper: #f1ede3;
  --paper-raised: #e8e2d2;
  --paper-line: #d7cfba;
  --on-paper: #18160f;
  --on-paper-dim: #6e6857;

  /* accents */
  --signal: #ff3b5c;
  --signal-ink: #ff5773;
  --mint: #0aad93;

  /* type */
  --display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --radius: 3px;
  --max: 1180px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 17px; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--on-paper);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3, h4 { font-family: var(--display); font-weight: 600; line-height: 1.12; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
.section { padding: 88px 0; }
.section-tight { padding: 56px 0; }
@media (max-width: 720px) {
  .section { padding: 56px 0; }
  .section-tight { padding: 40px 0; }
  .wrap { padding: 0 20px; }
}

.on-ink { background: var(--ink); color: var(--on-ink); }
.on-ink .dim { color: var(--on-ink-dim); }
.on-paper { background: var(--paper); color: var(--on-paper); }
.dim { color: var(--on-paper-dim); }

/* subtle canvas dot-grid, used once per page at most */
.canvas-grid {
  background-image: radial-gradient(var(--ink-line) 1px, transparent 1px);
  background-size: 26px 26px;
}

/* ---------- type scale ---------- */
.fs-display { font-size: clamp(2.5rem, 4vw + 1.2rem, 4.4rem); }
.fs-h1 { font-size: clamp(2rem, 2.4vw + 1.2rem, 2.9rem); }
.fs-h2 { font-size: clamp(1.5rem, 1.2vw + 1rem, 2rem); }
.fs-h3 { font-size: 1.2rem; }
.fs-lead { font-size: 1.15rem; line-height: 1.55; }
.measure { max-width: 62ch; }
.measure-narrow { max-width: 46ch; }

/* ---------- nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(20, 22, 26, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--ink-line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { font-family: var(--display); font-weight: 700; font-size: 1.15rem; color: var(--on-ink); display: flex; align-items: baseline; gap: 8px; }
.brand .brand-mark { color: var(--signal); }
.nav-links { display: flex; gap: 30px; color: var(--on-ink-dim); font-size: 0.94rem; }
.nav-links a { transition: color .15s ease; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--on-ink); }
.nav-cta {
  border: 1px solid var(--ink-line);
  color: var(--on-ink);
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  white-space: nowrap;
}
.nav-cta:hover { border-color: var(--signal); color: var(--signal-ink); }
.nav-toggle { display: none; background: none; border: 1px solid var(--ink-line); color: var(--on-ink); padding: 8px 12px; border-radius: var(--radius); }

@media (max-width: 840px) {
  .nav-links { position: absolute; top: 68px; left: 0; right: 0; background: var(--ink); flex-direction: column; gap: 0; border-bottom: 1px solid var(--ink-line); display: none; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 20px; border-top: 1px solid var(--ink-line); }
  .nav-toggle { display: inline-flex; }
  .nav-cta { display: none; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px;
  border-radius: var(--radius);
  font-size: 0.96rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-signal { background: var(--signal); color: #fff; }
.btn-signal:hover { background: #e02e4d; }
.btn-outline-ink { border-color: var(--ink-line); color: var(--on-ink); }
.btn-outline-ink:hover { border-color: var(--signal); color: var(--signal-ink); }
.btn-outline-paper { border-color: var(--paper-line); color: var(--on-paper); }
.btn-outline-paper:hover { border-color: var(--signal); color: var(--signal); }
.btn-block { width: 100%; justify-content: center; }
.btn[disabled] { opacity: 0.5; pointer-events: none; }

/* ---------- crop-mark artboard treatment ---------- */
.artboard {
  position: relative;
  border: 1px solid var(--ink-line);
}
.on-paper .artboard { border-color: var(--paper-line); }
.artboard::before, .artboard::after {
  content: ""; position: absolute; width: 14px; height: 14px; pointer-events: none;
}
.artboard::before { top: -1px; left: -1px; border-top: 2px solid var(--signal); border-left: 2px solid var(--signal); }
.artboard::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--signal); border-right: 2px solid var(--signal); }

.spec-chip {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.01em;
  border: 1px solid var(--ink-line);
  color: var(--on-ink-dim);
  padding: 3px 9px;
  border-radius: 2px;
  display: inline-block;
}
.on-paper .spec-chip { border-color: var(--paper-line); color: var(--on-paper-dim); }

/* ---------- hero ---------- */
.hero { padding: 96px 0 80px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero-eyebrow { font-family: var(--mono); font-size: 0.82rem; color: var(--on-ink-dim); }
.hero h1 { margin-top: 18px; }
.hero p.fs-lead { margin-top: 22px; color: var(--on-ink-dim); }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.hero-meta { margin-top: 40px; display: flex; gap: 26px; flex-wrap: wrap; }
.hero-meta .stat b { display: block; font-family: var(--display); font-size: 1.5rem; color: var(--on-ink); }
.hero-meta .stat span { font-size: 0.82rem; color: var(--on-ink-dim); }
.hero-visual { padding: 22px; background: var(--ink-raised); }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}

/* ---------- who-we-are / mission ---------- */
.split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 54px; align-items: start; }
@media (max-width: 800px) { .split { grid-template-columns: 1fr; } }
.eyebrow-mono { font-family: var(--mono); font-size: 0.8rem; }

/* ---------- collection / product cards ---------- */
.collection-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; margin-top: 40px; }
@media (max-width: 1000px) { .collection-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .collection-grid { grid-template-columns: 1fr; } }

.catalog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
@media (max-width: 900px) { .catalog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .catalog-grid { grid-template-columns: 1fr; } }

.product-card {
  background: var(--ink-raised);
  display: flex; flex-direction: column;
  transition: border-color .15s ease;
}
.product-card:hover { border-color: var(--signal); }
.product-card .cover { aspect-ratio: 4 / 3; border-bottom: 1px solid var(--ink-line); }
.product-card .body { padding: 18px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-card .code { font-family: var(--mono); font-size: 0.72rem; color: var(--signal-ink); text-transform: uppercase; letter-spacing: 0.04em; }
.product-card h3 { font-size: 1.05rem; }
.product-card .tagline { font-size: 0.88rem; color: var(--on-ink-dim); flex: 1; }
.product-card .meta-row { display: flex; align-items: center; justify-content: space-between; margin-top: 4px; }
.product-card .price { font-family: var(--display); font-weight: 600; font-size: 1.2rem; }
.product-card .price.free { color: var(--mint); }

/* ---------- free banner ---------- */
.free-banner {
  border: 1px solid var(--paper-line);
  background: var(--paper-raised);
  padding: 46px 40px;
  display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center;
}
@media (max-width: 700px) { .free-banner { grid-template-columns: 1fr; text-align: left; } }

/* ---------- benefits ---------- */
.benefits-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; margin-top: 40px; }
@media (max-width: 900px) { .benefits-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .benefits-grid { grid-template-columns: 1fr; } }
.benefit-icon { width: 38px; height: 38px; color: var(--signal); margin-bottom: 16px; }
.benefit h3 { font-size: 1.02rem; margin-bottom: 8px; }
.benefit p { font-size: 0.92rem; color: var(--on-paper-dim); }

/* ---------- FAQ ---------- */
.faq-item { border-top: 1px solid var(--ink-line); }
.on-paper .faq-item { border-color: var(--paper-line); }
.faq-item:last-child { border-bottom: 1px solid var(--ink-line); }
.on-paper .faq-item:last-child { border-bottom-color: var(--paper-line); }
.faq-q {
  width: 100%; text-align: left; background: none; border: none; color: inherit;
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  padding: 22px 2px; font-family: var(--display); font-size: 1.02rem; font-weight: 500;
}
.faq-q .plus { font-family: var(--mono); color: var(--signal-ink); font-size: 1.2rem; flex-shrink: 0; transition: transform .18s ease; }
.on-paper .faq-q .plus { color: var(--signal); }
.faq-item[open] .plus { transform: rotate(45deg); }
.faq-a { padding: 0 2px 22px; font-size: 0.95rem; color: var(--on-ink-dim); max-width: 68ch; }
.on-paper .faq-a { color: var(--on-paper-dim); }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: var(--on-ink); padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 40px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 34px; } }
.footer-col h4 { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.03em; color: var(--on-ink-dim); font-weight: 500; margin-bottom: 16px; }
.footer-col li { margin-bottom: 10px; font-size: 0.92rem; }
.footer-col a:hover { color: var(--signal-ink); }
.footer-col .contact-line { color: var(--on-ink-dim); }
.footer-col .contact-line b { color: var(--on-ink); font-weight: 500; }
.social-row { display: flex; gap: 14px; margin-top: 16px; }
.social-row a { border: 1px solid var(--ink-line); border-radius: 50%; width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; }
.social-row a:hover { border-color: var(--signal); }
.footer-bottom { margin-top: 54px; padding-top: 22px; border-top: 1px solid var(--ink-line); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 0.82rem; color: var(--on-ink-dim); }

/* ---------- generic page header (inner pages) ---------- */
.page-header { padding: 64px 0 46px; }
.page-header .eyebrow-mono { color: var(--on-ink-dim); }
.crumb { font-family: var(--mono); font-size: 0.78rem; color: var(--on-ink-dim); margin-bottom: 18px; }
.crumb a:hover { color: var(--on-ink); }

/* ---------- legal / long-form text ---------- */
.legal-body { max-width: 74ch; }
.legal-body h2 { font-size: 1.2rem; margin-top: 40px; margin-bottom: 12px; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body p { margin-bottom: 14px; color: var(--on-paper-dim); font-size: 0.96rem; }
.legal-body ul { margin: 0 0 14px; padding-left: 0; }
.legal-body li { list-style: none; padding-left: 22px; position: relative; margin-bottom: 8px; color: var(--on-paper-dim); font-size: 0.96rem; }
.legal-body li::before { content: "\2013"; position: absolute; left: 0; color: var(--signal); }
.legal-body strong { color: var(--on-paper); font-weight: 600; }
.legal-updated { font-family: var(--mono); font-size: 0.82rem; color: var(--on-paper-dim); margin-bottom: 30px; display: inline-block; }

/* ---------- curriculum ---------- */
.path-list { border-top: 1px solid var(--ink-line); margin-top: 40px; }
.path-row { display: grid; grid-template-columns: 60px 1.4fr 1.8fr 100px; gap: 22px; align-items: start; padding: 26px 0; border-bottom: 1px solid var(--ink-line); }
@media (max-width: 800px) { .path-row { grid-template-columns: 40px 1fr; } .path-row .path-modules, .path-row .path-price { grid-column: 2; } }
.path-index { font-family: var(--mono); color: var(--signal-ink); font-size: 0.95rem; padding-top: 3px; }
.path-title .code { display: block; font-family: var(--mono); font-size: 0.72rem; color: var(--on-ink-dim); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 6px; }
.path-title h3 { font-size: 1.08rem; margin-bottom: 6px; }
.path-title .tagline { font-size: 0.88rem; color: var(--on-ink-dim); }
.path-modules { font-size: 0.86rem; color: var(--on-ink-dim); }
.path-modules span { display: block; margin-bottom: 4px; }
.path-price { text-align: right; font-family: var(--display); font-weight: 600; }
@media (max-width: 800px) { .path-price { text-align: left; margin-top: 4px; } }

/* ---------- product detail ---------- */
.product-hero { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 54px; align-items: start; }
@media (max-width: 880px) { .product-hero { grid-template-columns: 1fr; } }
.product-specs { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 26px; }
.product-buybox { border: 1px solid var(--ink-line); padding: 26px; margin-top: 30px; }
.product-buybox .price-row { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 18px; }
.product-buybox .price-row .price { font-family: var(--display); font-size: 2.1rem; font-weight: 600; }
.module-list { margin-top: 12px; }
.module-row { display: grid; grid-template-columns: 34px 1fr; gap: 16px; padding: 18px 0; border-top: 1px solid var(--paper-line); }
.module-row .num { font-family: var(--mono); color: var(--signal); font-size: 0.86rem; }
.module-row h4 { font-size: 0.98rem; margin-bottom: 4px; }
.module-row p { font-size: 0.9rem; color: var(--on-paper-dim); }

/* ---------- loading page ---------- */
.loading-screen { min-height: 78vh; display: flex; align-items: center; justify-content: center; text-align: center; }
.spinner { width: 46px; height: 46px; border-radius: 50%; border: 2px solid var(--ink-line); border-top-color: var(--signal); margin: 0 auto 26px; animation: spin 0.85s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-fallback { margin-top: 26px; display: none; }
.loading-fallback.show { display: block; }

/* ---------- simple content pages ---------- */
.content-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
@media (max-width: 760px) { .content-grid { grid-template-columns: 1fr; } }
.stat-block { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 20px; }
@media (max-width: 700px) { .stat-block { grid-template-columns: 1fr 1fr; } }
.stat-block .stat { border-top: 1px solid var(--paper-line); padding-top: 14px; }
.stat-block .stat b { display: block; font-family: var(--display); font-size: 1.7rem; }
.stat-block .stat span { font-size: 0.84rem; color: var(--on-paper-dim); }

.form-grid { display: grid; gap: 16px; max-width: 480px; margin-top: 30px; }
.form-grid label { font-size: 0.85rem; color: var(--on-paper-dim); display: block; margin-bottom: 6px; }
.form-grid input, .form-grid textarea {
  width: 100%; background: var(--paper); border: 1px solid var(--paper-line); border-radius: var(--radius);
  padding: 12px 14px; font: inherit; color: var(--on-paper);
}
.form-grid input:focus, .form-grid textarea:focus { outline: none; border-color: var(--signal); }

.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
@media (max-width: 760px) { .contact-cards { grid-template-columns: 1fr; } }
.contact-card { border: 1px solid var(--paper-line); padding: 22px; }
.contact-card h3 { font-size: 0.98rem; margin-bottom: 8px; }
.contact-card p { font-size: 0.88rem; color: var(--on-paper-dim); }

/* ---------- 404 ---------- */
.not-found { min-height: 70vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 18px; }