/*
 * Landing page — base, chrome (nav + footer), buttons, section primitives.
 * Warm editorial: warm ivory ground, warm ink type, one ink pill CTA.
 * Palette + type come from site-tokens.css. Hero / app-window / body-sections
 * / motion live in their own files.
 */

/* ── Reset (landing page only loads this) ─────────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  background: var(--ground);
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--sans);
  background: var(--ground);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  background: var(--action);
  color: var(--action-text);
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  transition: top var(--dur-fast) var(--ease-entrance);
}
.skip-link:focus {
  top: 12px;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 50px;
  padding: 0 24px;
  border-radius: 999px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 15.5px;
  line-height: 1;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-entrance),
    background-color var(--dur-fast) var(--ease-standard),
    border-color var(--dur-fast) var(--ease-standard);
}
.btn:active {
  transform: scale(0.97);
}
.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.btn-sm {
  height: 40px;
  padding: 0 16px;
  font-size: 14px;
}
/* Primary: the black pill (on light grounds) */
.btn-ink {
  background: var(--action);
  color: var(--action-text);
}
.btn-ink:hover {
  background: var(--action-hover);
}
/* Secondary: quiet outline on light */
.btn-outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-outline:hover {
  border-color: var(--ink);
}
/* White pill — a light primary that reads on the dark ground (dark ink label) */
.btn-white {
  background: #fff;
  color: var(--ink-strong);
}
.btn-white:hover {
  background: #ececec;
}
/* Ghost on dark — the quiet secondary on the dark ground */
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: var(--line-on-ink);
}
.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.06);
}

/* ── Section primitives ──────────────────────────────────────────────────── */
.section {
  max-width: var(--measure);
  margin: 0 auto;
  padding: var(--section-pad) var(--gutter);
}
/* A soft-rounded light-gray panel on the white page (the recurring editorial
   surface, echoing the hero frame). Adds only the surface — width + interior
   padding stay identical to a plain section so content aligns across bands. */
.section.is-panel {
  background: var(--panel);
  border-radius: var(--panel-radius);
  margin-block: clamp(10px, 2vw, 24px);
}
/* The dark band — the page's mid-scroll black beat, echoing the hero. Full
   bleed edge to edge; the content inside keeps the shared section measure so
   everything stays aligned with the bands above and below. Type flips white,
   the segmented pill and preview get their dark-ground treatments. */
.section.is-dark {
  max-width: none;
  background: var(--band-black);
}
.section.is-dark > * {
  max-width: calc(var(--measure) - 2 * var(--gutter));
  margin-inline: auto;
}
.section.is-dark .sec-title {
  color: #fff;
}
.section.is-dark .split-line {
  color: rgba(255, 255, 255, 0.65);
}
.section.is-dark .chat-tabs {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
}
.section.is-dark .chat-tab {
  color: rgba(255, 255, 255, 0.65);
}
.section.is-dark .chat-tab:hover {
  color: #fff;
}
.section.is-dark .chat-tab.active {
  background: #fff;
  color: var(--ink-strong);
}
.section.is-dark .acol,
.section.is-dark .share-mock {
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 2px 4px rgba(0, 0, 0, 0.4),
    0 28px 56px -22px rgba(0, 0, 0, 0.5),
    0 56px 110px -52px rgba(0, 0, 0, 0.6);
}
.section.is-dark .stat {
  border-left-color: rgba(255, 255, 255, 0.2);
}
.section.is-dark .stat-n {
  color: #fff;
}
.section.is-dark .stat-l {
  color: rgba(255, 255, 255, 0.6);
}
.eyebrow-mono {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
}
/* The big statement — one enormous, light-weight display line per section.
   Impact comes from scale + air + brevity, not weight (editorial voice). */
.sec-title {
  font-weight: 340;                  /* light, refined display */
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
  text-wrap: balance;
  max-width: 18ch;
}
.sec-lead {
  font-size: clamp(16px, 1.55vw, 19px);
  line-height: 1.5;
  color: var(--ink-muted);
  max-width: 48ch;
  margin-top: 20px;
  text-wrap: balance;
}

/* ── Nav — the startups-page component, verbatim values, all pages ────────
   Fixed, transparent over the dark hero; dark glass once scrolled (and from
   the start on light subpages via .lnav-solid). General Sans wordmark 22/500.
   NOTE: backdrop-filter here matches the shipped startups nav exactly. */
.lnav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  transition: background 0.3s ease, backdrop-filter 0.3s ease;
}
/* Scrolled: the frosted BLACK bar (the startups recipe) — the base
   white-on-dark chrome colors below apply unchanged. */
.lnav.scrolled {
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(20px);
}
/* The LIGHT bar: over the landing's light sections (scripts.njk sets
   .on-light) and on every subpage (.lnav-solid — resources et al. live on
   white pages). White glass, ink chrome, light dropdowns. */
.lnav.scrolled.on-light,
.lnav.lnav-solid {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
}
.lnav.scrolled.on-light .lnav-brand,
.lnav.lnav-solid .lnav-brand {
  color: var(--ink-strong);
}
.lnav.scrolled.on-light .lnav-links a,
.lnav.scrolled.on-light .lnav-icon,
.lnav.scrolled.on-light .lnav-res-btn,
.lnav.scrolled.on-light .lnav-burger,
.lnav.lnav-solid .lnav-links a,
.lnav.lnav-solid .lnav-icon,
.lnav.lnav-solid .lnav-res-btn,
.lnav.lnav-solid .lnav-burger {
  color: var(--ink-muted);
}
.lnav.scrolled.on-light .lnav-links a:hover,
.lnav.scrolled.on-light .lnav-icon:hover,
.lnav.scrolled.on-light .lnav-res-btn:hover,
.lnav.scrolled.on-light .lnav-res.open .lnav-res-btn,
.lnav.lnav-solid .lnav-links a:hover,
.lnav.lnav-solid .lnav-icon:hover,
.lnav.lnav-solid .lnav-res-btn:hover,
.lnav.lnav-solid .lnav-res.open .lnav-res-btn {
  color: var(--ink-strong);
}
.lnav.scrolled.on-light .lnav-cta,
.lnav.lnav-solid .lnav-cta {
  background: var(--action);
  color: var(--action-text);
}
.lnav.scrolled.on-light .lnav-cta:hover,
.lnav.lnav-solid .lnav-cta:hover {
  background: var(--action-hover);
}
/* The resources menu follows the bar: white panel, ink links. */
.lnav.scrolled.on-light .lnav-res-menu,
.lnav.lnav-solid .lnav-res-menu {
  background: rgba(255, 255, 255, 0.97);
  border-color: var(--line);
  box-shadow: 0 16px 48px -20px rgba(0, 0, 0, 0.25);
}
.lnav.scrolled.on-light .lnav-res-menu a,
.lnav.lnav-solid .lnav-res-menu a {
  color: var(--ink);
}
.lnav.scrolled.on-light .lnav-res-menu a:hover,
.lnav.lnav-solid .lnav-res-menu a:hover {
  background: rgba(13, 13, 13, 0.06);
  color: var(--ink-strong);
}
/* The mobile dropdown sheet follows the white bar too — no bottom hairline,
   same as the bar itself. */
.lnav.scrolled.on-light + .lnav-drop,
.lnav.lnav-solid + .lnav-drop {
  background: rgba(255, 255, 255, 0.97);
  border-bottom: none;
}
.lnav.scrolled.on-light + .lnav-drop a,
.lnav.lnav-solid + .lnav-drop a {
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.lnav.scrolled.on-light + .lnav-drop a:last-child,
.lnav.lnav-solid + .lnav-drop a:last-child {
  border-bottom: none;
}
.lnav-brand {
  font-family: "General Sans", sans-serif;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: white;
  text-decoration: none;
}
.lnav-links {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 32px;
  align-items: center;
}
.lnav-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color 0.2s;
}
.lnav-links a:hover {
  color: white;
}
.lnav-right {
  display: flex;
  gap: 16px;
  align-items: center;
}
.lnav-icon {
  color: rgba(255, 255, 255, 0.6);
  display: inline-flex;
  align-items: center;
  transition: color 0.2s;
}
.lnav-icon:hover {
  color: white;
}
.lnav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 16px;
  border-radius: 9999px;
  font-size: 14px;
  font-weight: 500;
  gap: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  background: white;
  color: #0d0d0d;
  font-family: var(--sans);
}
.lnav-cta:hover {
  background: #ececec;
}
.lnav-cta-glyph {
  width: 15px;
  height: 15px;
  display: inline-block;
  background: currentColor;
  -webkit-mask: var(--helmet-mask) center / contain no-repeat;
  mask: var(--helmet-mask) center / contain no-repeat;
}
/* Resources: same voice as the links. */
.lnav-res {
  position: relative;
}
.lnav-res-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s;
}
.lnav-res-btn:hover,
.lnav-res.open .lnav-res-btn {
  color: white;
}
.lnav-res-btn svg {
  transition: transform 0.2s;
}
.lnav-res.open .lnav-res-btn svg {
  transform: rotate(180deg);
}
.lnav-res-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  min-width: 168px;
  background: rgba(13, 13, 13, 0.97);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}
.lnav-res.open .lnav-res-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.lnav-res-menu a {
  display: block;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
}
.lnav-res-menu a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: white;
}
.lnav-burger {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: none;
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: rgba(255, 255, 255, 0.7);
}
.lnav-burger:hover {
  background: rgba(255, 255, 255, 0.08);
}
.lnav-burger svg {
  width: 20px;
  height: 20px;
}
.lnav-drop {
  display: none;
  position: fixed;
  top: 52px;
  left: 0;
  right: 0;
  z-index: 99;
  background: rgba(13, 13, 13, 0.97);
  backdrop-filter: blur(20px);
  padding: 8px 20px 16px;
  flex-direction: column;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.lnav-drop.open {
  display: flex;
}
.lnav-drop a {
  padding: 12px 4px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.lnav-drop a:last-child {
  border-bottom: none;
}

/* ── Footer (the deepest ground, a step below the page) ──────────────────── */
.lfoot {
  background: var(--ground-deep);
  color: var(--on-ink-faint);
  padding: 56px var(--gutter) 40px;
}
.lfoot-inner {
  max-width: var(--measure);
  margin: 0 auto;
}
.lfoot-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line-on-ink);
}
.lfoot-brand .lnav-brand {
  color: #fff;
  margin-bottom: 12px;
}
.lfoot-brand p {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--on-ink-faint);
  max-width: 30ch;
  margin-bottom: 18px;
}
.lfoot-col h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--on-ink-faint);
  margin-bottom: 14px;
}
.lfoot-col a {
  display: block;
  font-size: 13.5px;
  color: var(--on-ink-muted);
  padding: 5px 0;
  transition: color var(--dur-fast) var(--ease-standard);
}
.lfoot-col a:hover {
  color: #fff;
}
.lfoot-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 28px;
  font-size: 12.5px;
  color: var(--on-ink-faint);
}
.lfoot-bottom a {
  color: var(--on-ink-muted);
}
.lfoot-bottom a:hover {
  color: #fff;
}
.lfoot-legal {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.lfoot-credit {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
@media (max-width: 760px) {
  .lfoot-top {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  /* Give the bottom-row legal/credit links a comfortable tap height on phones
     (they are single-line text links, ~19px tall otherwise). */
  .lfoot-bottom {
    row-gap: 6px;
  }
  .lfoot-bottom a {
    padding: 6px 0;
  }
}
@media (max-width: 460px) {
  .lfoot-top {
    grid-template-columns: 1fr;
  }
}

/* ── Explicit per-OS download triggers (HOU-919) ──────────────────────────
   The gate script routes [data-dl-trigger] by data-dl-os (else detectOs),
   but v3 dropped every pinned trigger — non-Windows visitors had no path to
   the Windows installer. These quiet text links restore both directions. */
.dl-os-links {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--ink-subtle);
}
.dl-os-link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--ink-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
.dl-os-link:hover {
  color: var(--ink-strong);
}
.lfoot .dl-os-links {
  color: var(--on-ink-faint);
}
.lfoot .dl-os-link {
  color: var(--on-ink-muted);
}
.lfoot .dl-os-link:hover {
  color: var(--on-ink);
}