/* ==========================================================================
   nanofyapps.com — shared design system
   Plain CSS, no build step. Used by index, privacy, terms, contact, beta, 404.
   Fonts: Fraunces (headings) + Nunito Sans (body), loaded
   via <link> in each page head. Palette: soft-slate DARK (blue/green accents).
   Single dark theme for all visitors (no light fallback). Mobile-first, responsive.
   ========================================================================== */

:root {
  color-scheme: dark;

  /* Palette — soft-slate dark: elevated (not black) surfaces + bright blue/green accents */
  --bg:            #171d2b;   /* soft dark slate — page */
  --bg-soft:       #1e2637;   /* raised wash sections */
  --bg-mint:       #16261f;   /* dark green-tinted (currently unused) */
  --bg-card:       #1f2738;   /* raised cards / panels */
  --border:        #313c54;   /* soft slate hairline */
  --text:          #e9eef7;   /* soft near-white */
  --text-soft:     #9db0cf;   /* muted slate-blue */
  --accent:        #6ea8ff;   /* brightened blue — links, eyebrow, brand b, faq +, .code, button fill */
  --accent-2:      #7cc0ff;   /* bright light blue for gradients */
  --accent-ink:    #0c1424;   /* dark text on the bright accent button */
  --accent-wash:   #22304d;   /* deep blue chip/badge fill */
  --accent-green:      #35d6a0;   /* brightened green accent */
  --accent-green-2:    #4bd6a4;   /* lighter green for gradients */
  --accent-green-wash: #16302a;   /* deep mint fill */
  --accent-green-ink:  #b6f3d8;   /* light green text on mint (currently unused) */
  --shadow:      0 1px 2px rgba(0,0,0,.35), 0 10px 30px rgba(0,0,0,.4);
  --shadow-hover:0 14px 36px rgba(0,0,0,.5);

  /* Type */
  --heading-font: "Fraunces", Georgia, "Times New Roman", serif;
  --body-font:    "Nunito Sans", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  /* Rhythm */
  --maxw: 1120px;
  --radius: 16px;
  --gap: clamp(1.1rem, 2.4vw, 1.6rem);
  --section-pad: clamp(3.5rem, 9vw, 7rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  font-family: var(--body-font);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.003em;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1.2rem, 4vw, 2rem);
}

h1, h2, h3 {
  font-family: var(--heading-font);
  font-optical-sizing: auto;
  letter-spacing: -0.006em;
  line-height: 1.12;
  font-weight: 700;
}

/* ---------- Header / nav ------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.brand {
  font-family: var(--heading-font);
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: -0.03em;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand b { color: var(--accent); font-weight: 700; }
.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2rem);
  list-style: none;
}
.nav-links a { color: var(--text-soft); font-size: .95rem; font-weight: 500; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
@media (max-width: 560px) {
  .nav-links { gap: .9rem; }
  .nav-links a { font-size: .88rem; }
}
@media (max-width: 380px) {
  .nav-links { gap: .65rem; }
  .nav-links a { font-size: .82rem; }
}

/* ---------- Buttons ---------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.4rem;
  border-radius: 10px;
  font-family: var(--body-font);
  font-weight: 600;
  font-size: .97rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .08s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 2px 6px rgba(0,0,0,.4);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-soft); }

/* ---------- Sections --------------------------------------------------- */
section { padding-block: var(--section-pad); }
.section-head { max-width: 44rem; margin-bottom: clamp(2rem, 5vw, 3rem); }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: .72rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: .7rem;
}
h2 { font-size: clamp(1.8rem, 4.4vw, 2.6rem); }
h3 { font-size: 1.2rem; }
.lead { color: var(--text-soft); font-size: clamp(1.02rem, 2.2vw, 1.18rem); }

/* ---------- Hero ------------------------------------------------------- */
.hero {
  padding-block: clamp(4rem, 11vw, 8rem);
  text-align: center;
  background:
    radial-gradient(60% 60% at 50% -10%, color-mix(in srgb, var(--accent-2) 22%, transparent), transparent 70%),
    radial-gradient(46% 48% at 86% 2%, color-mix(in srgb, var(--accent-green-2) 14%, transparent), transparent 72%);
}
.hero h1 {
  font-size: clamp(2.5rem, 7vw, 4.4rem);
  max-width: 15ch;
  margin-inline: auto;
  letter-spacing: -0.012em;
}
.hero .lead {
  max-width: 48ch;
  margin: 1.3rem auto 0;
  font-size: clamp(1.08rem, 2.6vw, 1.32rem);
}
.hero-cta {
  display: flex;
  gap: .8rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 2.2rem;
}

/* ---------- Value pillars --------------------------------------------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
.pillar .ico {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: var(--accent-wash);
  color: var(--accent);
  margin-bottom: 1rem;
}
.pillar .ico svg { width: 24px; height: 24px; }
.pillar h3 { margin-bottom: .4rem; }
.pillar p { color: var(--text-soft); font-size: .97rem; }
.pillar--green .ico { background: var(--accent-green-wash); color: var(--accent-green); }
@media (max-width: 720px) { .pillars { grid-template-columns: 1fr; } }

/* ---------- App grid --------------------------------------------------- */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: var(--gap);
}
.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: transform .18s cubic-bezier(.4,0,.2,1), box-shadow .2s ease, border-color .2s ease;
}
.app-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}
/* Blank icon placeholder — real app icons TBD */
.app-icon {
  width: 66px; height: 66px;
  border-radius: 15px;
  background: var(--bg-soft);
  border: 1px dashed color-mix(in srgb, var(--accent) 50%, var(--border));
  color: color-mix(in srgb, var(--text-soft) 80%, transparent);
  display: grid; place-items: center;
  margin-bottom: 1.15rem;
}
.app-icon svg { width: 26px; height: 26px; opacity: .8; }
.app-card h3 { margin-bottom: .35rem; }
.app-card .tagline { color: var(--text-soft); font-size: .97rem; }
/* Concrete per-app feature bullets */
.app-feats { list-style: none; margin: 1rem 0 0; display: grid; gap: .5rem; flex-grow: 1; }
.app-feats li { position: relative; padding-left: 1.35rem; font-size: .9rem; color: var(--text-soft); }
.app-feats li::before {
  content: "";
  position: absolute; left: 2px; top: .18em;
  width: 6px; height: 10px;
  border: solid var(--accent-green);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.app-card .app-cta {
  margin-top: 1.4rem;
  display: flex; align-items: center; gap: .75rem; flex-wrap: wrap;
}
.notify-link { font-size: .9rem; font-weight: 600; }
.notify-link:hover { text-decoration: none; }
.store-soon {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .88rem; font-weight: 600;
  padding: .55rem .95rem;
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text-soft);
  background: var(--bg-soft);
}
.store-soon svg { width: 16px; height: 16px; }
.app-card.coming {
  border-style: dashed;
  justify-content: center; text-align: center; align-items: center;
  background: transparent;
}
.app-card.coming .app-icon { border-style: solid; }
.app-card.coming .tagline { margin-top: .2rem; }

/* ---------- FAQ (native <details>, no JS) ------------------------------ */
.faq { max-width: 46rem; margin-inline: auto; display: grid; gap: .7rem; }
.faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  padding: 0 1.3rem;
  transition: border-color .2s ease;
}
.faq details[open] { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1.05rem 0;
  font-family: var(--heading-font);
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-size: 1.35rem; font-weight: 400; line-height: 1;
  color: var(--accent);
  transition: transform .2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--text-soft); margin: 0 0 1.1rem; font-size: .97rem; }
.faq details p:first-of-type { margin-top: 0; }

/* ---------- About ------------------------------------------------------ */
.about {
  background:
    linear-gradient(180deg, var(--bg-soft), var(--bg));
  border-block: 1px solid var(--border);
}
.about .container { max-width: 48rem; }
.about h2 { margin-top: .5rem; }
.about p { color: var(--text-soft); margin-top: 1.1rem; font-size: 1.07rem; }
.about .sig { margin-top: 1.4rem; font-weight: 600; color: var(--text); }

/* ---------- Final CTA -------------------------------------------------- */
.cta-final { text-align: center; }
.cta-final .lead { margin: 1rem auto 1.9rem; max-width: 42ch; }

/* ---------- Footer ----------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2.75rem;
  color: var(--text-soft);
  font-size: .9rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-links { display: flex; gap: 1.5rem; list-style: none; flex-wrap: wrap; }
.footer-links a { color: var(--text-soft); }
.footer-links a:hover { color: var(--text); text-decoration: none; }

/* ---------- Prose (privacy / terms) ------------------------------------ */
.prose { max-width: 46rem; margin-inline: auto; }
.prose h1 { font-size: clamp(2rem, 5vw, 2.8rem); }
.prose .updated { color: var(--text-soft); font-size: .9rem; margin-top: .6rem; }
.prose h2 { font-size: 1.4rem; margin-top: 2.6rem; scroll-margin-top: 88px; }
.prose h3 { margin-top: 1.6rem; scroll-margin-top: 88px; }
.prose p { margin-top: .95rem; color: var(--text); }
.prose ul { margin: .95rem 0 0 1.2rem; color: var(--text); }
.prose li { margin-top: .45rem; }
.prose .app-anchor {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.6rem;
  margin-top: 1.35rem;
  background: var(--bg-soft);
}
.prose .app-anchor h3 { margin-top: 0; }
.todo {
  display: inline-block;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: #f4c453;
  background: #3a2e12;
  border-radius: 5px;
  padding: .1rem .42rem;
  vertical-align: middle;
}

/* ---------- Utility ---------------------------------------------------- */
.center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Page hero (contact / beta tops) ---------------------------- */
.page-hero {
  text-align: center;
  padding-block: clamp(3rem, 8vw, 5.5rem);
  background:
    radial-gradient(60% 60% at 50% -10%, color-mix(in srgb, var(--accent-2) 18%, transparent), transparent 70%),
    radial-gradient(42% 44% at 85% 4%, color-mix(in srgb, var(--accent-green-2) 12%, transparent), transparent 72%);
}
.page-hero h1 { font-size: clamp(2.2rem, 6vw, 3.4rem); max-width: 18ch; margin-inline: auto; }
.page-hero .lead { max-width: 52ch; margin: 1.1rem auto 0; }

/* ---------- Contact ---------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: var(--gap); }
.contact-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.5rem; display: flex; flex-direction: column; gap: .35rem;
  transition: border-color .2s ease, box-shadow .2s ease, transform .18s ease;
}
.contact-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.contact-card h3 { margin: 0; }
.contact-card .contact-purpose { color: var(--text-soft); font-size: .95rem; flex-grow: 1; }
.contact-card .contact-email { font-weight: 700; margin-top: .5rem; }
.contact-card--cta { background: var(--accent-green-wash); border-color: color-mix(in srgb, var(--accent-green) 32%, var(--border)); }
.contact-card--cta .btn { margin-top: .7rem; align-self: flex-start; }

/* ---------- Form embed (Tally placeholder + fallback) ------------------ */
.form-block { max-width: 44rem; margin-inline: auto; margin-top: clamp(2.5rem, 6vw, 4rem); }
.form-embed {
  margin-top: 1.5rem;
  background: #f4f7fb;                 /* intentional light card so the light-themed Tally form reads as designed on the dark page */
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--shadow);
}
.form-embed iframe { width: 100%; border: 0; min-height: 300px; }
.form-embed .form-embed-note { color: #5c6b86; font-size: .88rem; margin-top: 1.1rem; text-align: center; }
.form-embed .form-embed-note a { color: #2563eb; }

/* ---------- Beta steps ------------------------------------------------- */
.beta-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--gap); list-style: none; margin: 0; padding: 0; }
.beta-step { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.beta-step .step-num {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: var(--accent-green-wash); color: var(--accent-green);
  font-family: var(--heading-font); font-weight: 700; margin-bottom: .85rem;
}
.beta-step h3 { font-size: 1.05rem; margin-bottom: .3rem; }
.beta-step p { color: var(--text-soft); font-size: .93rem; }
.beta-note {
  max-width: 44rem; margin: clamp(2rem, 5vw, 3rem) auto 0; padding: 1.15rem 1.4rem; border-radius: var(--radius);
  background: var(--accent-wash); border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border));
  color: var(--text-soft); font-size: .95rem;
}

/* ---------- 404 -------------------------------------------------------- */
.error-page { text-align: center; padding-block: clamp(4rem, 12vw, 8rem); }
.error-page .code { font-family: var(--heading-font); font-weight: 700; font-size: clamp(4rem, 16vw, 8rem); line-height: 1; color: var(--accent); letter-spacing: -0.01em; }
.error-page h1 { margin-top: .4rem; }
.error-page .lead { max-width: 40ch; margin: 1rem auto 2rem; }
.error-page .hero-cta { display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; }