/* NavLink apex — visual tokens per tunnel_cat/docs/NavLink_VisualStyle.md v1.0 */
:root {
  --nav-bg-primary:   #040412;
  --nav-bg-secondary: #070917;
  --nav-space-violet: #0B0A2E;
  --nav-cyan:         #54B6F8;
  --nav-blue:         #6885FB;
  --nav-violet:       #7956FE;
  --nav-title-cyan:   #86CEFE;
  --nav-title-violet: #A592FB;
  --nav-text-primary: #F5F7FF;
  --nav-text-muted:   #757986;
  --nav-border:       #45596C;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--nav-bg-primary); color: var(--nav-text-primary); font-family: "Inter", "Segoe UI", sans-serif; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

header.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 32px; background: var(--nav-bg-secondary);
}
.brand-lockup { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; }
.brand-lockup img { height: 34px; }
nav.main-nav { display: flex; gap: 26px; font-weight: 600; font-size: 15px; color: var(--nav-text-muted); }
nav.main-nav a:hover { color: var(--nav-text-primary); }
.header-right { display: flex; align-items: center; gap: 14px; }
.lang-switch { display: flex; gap: 4px; }
.lang-switch button { background: transparent; border: 1px solid var(--nav-border); color: var(--nav-text-muted); font-size: 11px; font-weight: 700; padding: 4px 8px; border-radius: 3px; cursor: pointer; }
.lang-switch button.active { border-color: var(--nav-cyan); color: var(--nav-cyan); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 26px; border-radius: 8px; font-weight: 600; font-size: 16px; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: linear-gradient(90deg, var(--nav-cyan) 0%, var(--nav-blue) 52%, var(--nav-violet) 100%); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-secondary { color: var(--nav-text-primary); border-color: var(--nav-border); background: transparent; }
.btn-secondary:hover { border-color: var(--nav-cyan); color: var(--nav-cyan); }
.btn-secondary.small, .btn-primary.small { padding: 10px 18px; font-size: 14px; border-radius: 6px; }

/* ── Hero ───────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 560px;
  display: flex; align-items: center;
  background: url('assets/hero-bg.jpg') center/cover no-repeat, var(--nav-bg-primary);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(3,3,14,.92) 0%, rgba(3,3,14,.78) 42%, rgba(3,3,14,.55) 62%, rgba(3,3,14,.3) 100%);
}
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; width: 100%; }
.hero p.kicker { color: #C7CCDC; font-size: 16px; max-width: 480px; margin-bottom: 18px; text-shadow: 0 2px 12px rgba(0,0,0,.6); }
.hero h1 {
  font-size: clamp(34px, 4.6vw, 54px); font-weight: 800; line-height: 1.08; letter-spacing: -.02em;
  color: #fff;
  text-shadow: 0 2px 20px rgba(0,0,0,.7), 0 0 60px rgba(84,182,248,.25);
  margin: 0 0 28px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }

/* ── Tunnel Cat card (hero, right column) ────────────────────────
   Not a Tunnel Cat ad — a quick consumer entry point into ShortNerdCat,
   staying inside NavLink's own visual world. Yellow is a minority accent
   (logo, label, one secondary link), never the card's own background. */
.promo-banner {
  position: relative; z-index: 2; overflow: hidden;
  display: flex; flex-direction: column;
  max-width: 540px; min-height: 310px;
  border-radius: 20px;
  background:
    radial-gradient(circle at 18% 20%, rgba(220,149,24,.10), transparent 30%),
    linear-gradient(145deg, rgba(10,12,28,.97), rgba(18,20,40,.94));
  border: 1px solid rgba(220,149,24,.38);
  box-shadow: 0 22px 55px rgba(0,0,0,.38), 0 0 36px rgba(104,133,251,.07);
  padding: 34px;
}
/* faint decorative tunnel rings, bottom-right — texture only, no scene */
.promo-banner::after {
  content: "";
  position: absolute; right: -60px; bottom: -60px;
  width: 220px; height: 220px; border-radius: 50%;
  border: 26px solid rgba(220,149,24,.12);
  box-shadow: 0 0 0 46px rgba(104,133,251,.05);
  pointer-events: none;
}
.promo-banner-top { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.promo-banner-mascot { width: 68px; height: 68px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.promo-banner .eyebrow2 {
  color: #DC9518; font-weight: 700; font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
}
.promo-banner h3 { position: relative; color: var(--nav-text-primary); font-size: 32px; margin: 0 0 10px; font-weight: 800; }
.promo-banner p.promo-desc { position: relative; color: var(--nav-text-muted); font-size: 14.5px; line-height: 1.55; margin: 0 0 22px; max-width: 400px; }
.promo-banner .promo-cta-row { position: relative; margin-top: auto; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.promo-consumer-cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, #59C8FF, #6885FB);
  color: #071018; font-weight: 700; font-size: 14.5px;
  padding: 12px 22px; border-radius: 9px; border: none; cursor: pointer; font-family: inherit;
  box-shadow: 0 10px 28px rgba(89,200,255,.20);
  transition: transform .15s, box-shadow .15s;
}
.promo-consumer-cta:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(89,200,255,.28); }
.promo-consumer-cta.secondary {
  background: rgba(255,255,255,.03); color: var(--nav-text-primary);
  border: 1px solid rgba(89,200,255,.34); box-shadow: none;
}
.promo-consumer-cta.secondary:hover { border-color: #59C8FF; box-shadow: 0 10px 28px rgba(89,200,255,.14); }
.promo-banner .promo-caption { flex-basis: 100%; }
.promo-banner .promo-caption { display: block; color: var(--nav-text-muted); font-size: 12px; margin-top: 10px; }
.promo-banner .go {
  display: inline-block; margin-top: 12px;
  color: #DC9518; font-weight: 650; font-size: 13.5px;
}
.promo-banner .go:hover { text-decoration: underline; }

/* ── Funnel card ────────────────────────────────────────────────── */
.funnel-section { background: var(--nav-bg-secondary); border-top: 1px solid #1A1E33; border-bottom: 1px solid #1A1E33; padding: 48px 0; }
.funnel-section .wrap { display: grid; grid-template-columns: 1fr .9fr; gap: 40px; align-items: center; }
.funnel-section h2.title { margin-bottom: 10px; }
.funnel-card {
  position: relative; z-index: 2;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--nav-border);
  border-radius: 12px;
  padding: 28px;
}
.funnel-card h2 { font-size: 19px; margin: 0 0 6px; }
.funnel-card p.sub { color: var(--nav-text-muted); font-size: 13.5px; margin: 0 0 18px; }
.funnel-step { display: none; }
.funnel-step.active { display: block; }
.funnel-card input[type=email], .funnel-card input[type=password] {
  width: 100%; padding: 12px 14px; border-radius: 6px; border: 1px solid var(--nav-border);
  background: rgba(255,255,255,.03); color: var(--nav-text-primary); font-size: 14.5px; margin-bottom: 12px;
}
.funnel-card .msg { font-size: 13px; margin-top: 10px; min-height: 18px; }
.funnel-card .msg.error { color: #FF8B8B; }
.funnel-card .msg.ok { color: var(--nav-cyan); }
.funnel-key-box {
  font-family: "JetBrains Mono", monospace; font-size: 13px; word-break: break-all;
  background: rgba(255,255,255,.04); border: 1px solid var(--nav-border); border-radius: 6px; padding: 12px;
  margin-top: 12px;
}

/* ── Content sections ───────────────────────────────────────────── */
.section { padding: 64px 0; }
.card-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.info-card { background: var(--nav-bg-secondary); border: 1px solid #1A1E33; border-radius: 12px; padding: 22px; }
.info-card .icon { width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--nav-cyan); display: flex; align-items: center; justify-content: center; color: var(--nav-cyan); margin-bottom: 14px; }
.info-card .icon.img-icon { border: none; }
.info-card .icon.img-icon img { width: 100%; height: 100%; object-fit: contain; }
.info-card h3 { font-size: 16px; margin: 0 0 8px; }
.info-card p { font-size: 14px; color: var(--nav-text-muted); margin: 0; }

.section-label { color: var(--nav-cyan); font-weight: 700; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 10px; }
.section h2.title { font-size: clamp(24px,3vw,34px); margin: 0 0 12px; }

.brand-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.brand-link-card {
  border: 2px solid #1A1E33; border-radius: 12px; padding: 26px;
  background: var(--nav-bg-secondary); min-height: 160px;
  transition: border-color .15s, transform .15s;
}
.brand-link-card:hover { transform: translateY(-2px); }
.brand-link-card .eyebrow5 { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 10px; }
.brand-link-card h3 { font-size: 19px; margin: 0 0 8px; }
.brand-link-card p { color: var(--nav-text-muted); font-size: 13.5px; margin: 0 0 16px; }
.brand-link-card.tc { background: #DC9518; border-color: #0D1720; }
.brand-link-card.tc:hover { border-color: #000; }
.brand-link-card.tc .eyebrow5 { color: #0D1720; font-weight: 800; }
.brand-link-card.tc h3 { color: #0D1720; }
.brand-link-card.tc p { color: #22190A; }
.brand-link-card.snc { border-color: #59C8FF55; }
.brand-link-card.snc:hover { border-color: #59C8FF; }
.brand-link-card.snc .eyebrow5 { color: #59C8FF; }
.brand-link-card.apps { border-color: #8B7CFF55; }
.brand-link-card.apps:hover { border-color: #8B7CFF; }
.brand-link-card.apps .eyebrow5 { color: #8B7CFF; }

/* ── Page nav (real separate pages, sub-nav bar) ───────────────── */
.page-tabs { display: flex; gap: 4px; overflow-x: auto; margin-bottom: 32px; border-bottom: 1px solid #1A1E33; }
.page-tabs a {
  padding: 12px 18px; font-size: 14.5px; font-weight: 600; color: var(--nav-text-muted);
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.page-tabs a.active { color: var(--nav-cyan); border-bottom-color: var(--nav-cyan); }
.page-tabs a:hover { color: var(--nav-text-primary); }

/* ── Tabs (legacy, unused after multi-page split, kept for CSS safety) ── */
.tab-bar {
  display: flex; gap: 4px; overflow-x: auto; margin-bottom: 36px;
  border-bottom: 1px solid #1A1E33; padding-bottom: 0;
}
.tab-btn {
  background: none; border: none; color: var(--nav-text-muted);
  font-family: inherit; font-size: 14.5px; font-weight: 600; cursor: pointer;
  padding: 12px 18px; white-space: nowrap; border-bottom: 2px solid transparent;
}
.tab-btn:hover { color: var(--nav-text-primary); }
.tab-btn.active { color: var(--nav-cyan); border-bottom-color: var(--nav-cyan); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

footer.site-footer { border-top: 1px solid #1A1E33; background: var(--nav-bg-secondary); padding: 28px 0; color: var(--nav-text-muted); font-size: 13px; text-align: center; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .card-row, .brand-links { grid-template-columns: 1fr !important; }
  .funnel-section .wrap { grid-template-columns: 1fr; }
  nav.main-nav { display: none; }
  header.site-header { flex-wrap: wrap; gap: 10px; padding: 12px 20px; }
  .wrap { padding: 0 20px; }
  .btn, .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}
.brand-lockup-link { text-decoration: none; color: inherit; display: flex; align-items: center; }

/* ── Mobile menu (hamburger) ────────────────────────────────────── */
.mobile-menu-btn {
  display: none; width: 40px; height: 40px; border-radius: 8px; flex-shrink: 0;
  border: 1px solid var(--nav-border); background: transparent; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.mobile-menu-btn span { display: block; width: 18px; height: 2px; background: var(--nav-text-primary); border-radius: 1px; transition: transform .2s, opacity .2s; }
.mobile-menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mobile-menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.mobile-menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
@media (max-width: 900px) {
  header.site-header { position: relative; }
  .mobile-menu-btn { display: flex; }
  nav.main-nav, .header-right { display: none; }
  header.site-header.mobile-nav-open nav.main-nav,
  header.site-header.mobile-nav-open .header-right {
    display: flex; flex-direction: column; align-items: stretch; gap: 4px;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--nav-bg-secondary); border-top: 1px solid var(--nav-border);
    padding: 16px 20px; z-index: 60;
  }
  header.site-header.mobile-nav-open nav.main-nav { border-bottom: 1px solid var(--nav-border); padding-bottom: 16px; }
  header.site-header.mobile-nav-open nav.main-nav a,
  header.site-header.mobile-nav-open .header-right a,
  header.site-header.mobile-nav-open .header-right button {
    padding: 10px 0; width: 100%; text-align: left;
  }
  header.site-header.mobile-nav-open .header-right { gap: 10px; }
}