/* Proof of Development — shared site styles
   Tokens: paper #FAFAF7, ink #17181C, accent (cobalt) #4A5FBF, muted #6B6F76, line #E3E1DC
   Display: Fraunces (italic, warm/handmade). Body: Inter. Utility/mono: IBM Plex Mono. */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;1,9..144,500;1,9..144,600&family=Inter:wght@400;500;600;800&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --paper: #FAFAF7;
  --paper-raised: #FFFFFF;
  --ink: #17181C;
  --muted: #6B6F76;
  --line: #E3E1DC;
  --accent: #4A5FBF;
  --accent-dim: #4A5FBF1a;
  --radius: 12px;
  --wrap: 640px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */
.site-nav {
  padding: 28px 0 0;
}
.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: block;
  text-decoration: none;
  color: var(--ink);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  letter-spacing: 0.02em;
}
.nav-links {
  display: flex;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--ink);
}

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0 64px;
}
.hero h1 {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(32px, 4.8vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
}
.hero .sub {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-weight: 500;
  font-size: 19px;
  color: var(--muted);
  max-width: 40ch;
  margin: 0;
}
.hero .note {
  font-size: 14px;
  color: var(--muted);
  margin-top: 18px;
  font-style: italic;
}
.hero .cta {
  display: inline-block;
  margin-top: 28px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ink);
  color: var(--paper);
  border: none;
  padding: 12px 20px;
  border-radius: 999px;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--accent); }
.btn.btn-quiet {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn.btn-quiet:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- App cards (polaroid grid) ---------- */
.apps {
  padding: 16px 0 72px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
  max-width: 480px;
  margin: 0 auto;
}
.app-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  text-decoration: none;
  color: inherit;
}
.app-card .polaroid {
  background: #fff;
  padding: 10px 10px 24px;
  box-shadow: 0 8px 18px rgba(0,0,0,0.11);
  border-radius: 2px;
  margin-bottom: 14px;
}
.app-card:nth-child(3n+1) .polaroid { transform: rotate(-2deg); }
.app-card:nth-child(3n+2) .polaroid { transform: rotate(1.5deg); }
.app-card:nth-child(3n) .polaroid { transform: rotate(-1deg); }
.app-card .polaroid img {
  display: block;
  width: 88px;
  height: 88px;
  border-radius: 6px;
  object-fit: cover;
}
.app-card h3 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 17px;
  margin: 0 0 4px;
}
.app-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  max-width: 24ch;
}
.app-card.soon { opacity: 0.82; }
.app-card .eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  display: block;
  margin-bottom: 5px;
}
.app-card.soon .eyebrow { color: var(--muted); }
@media (max-width: 560px) {
  .apps { grid-template-columns: 1fr; }
}

/* ---------- Section ---------- */
section.block {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}
section.block h2 {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 22px;
  margin: 0 0 20px;
}
section.block .lead {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  color: var(--muted);
  max-width: 52ch;
  margin: 0 0 28px;
}

/* ---------- Feature list ---------- */
.features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}
.features li {
  padding-left: 0;
}
.features h4 {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 4px;
}
.features p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- Segmented control (signature element) ---------- */
.segmented {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 24px;
}
.segmented .thumb {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 4px;
  width: calc((100% - 8px) / 3);
  background: var(--ink);
  border-radius: 999px;
  transition: transform 0.25s cubic-bezier(.4,0,.2,1);
  z-index: 0;
}
.segmented button {
  position: relative;
  z-index: 1;
  background: transparent;
  border: none;
  padding: 10px 8px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  border-radius: 999px;
}
.segmented button[aria-selected="true"] { color: var(--paper); }
.mode-panel {
  display: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  background: var(--paper-raised);
}
.mode-panel.active { display: block; }
.mode-panel h4 {
  font-family: 'Fraunces', serif;
  font-weight: 500;
  font-size: 18px;
  margin: 0 0 8px;
}
.mode-panel p { margin: 0; color: var(--muted); font-size: 15px; }

/* ---------- Form ---------- */
form.contact-form {
  display: grid;
  gap: 18px;
  max-width: 480px;
}
.field { display: grid; gap: 6px; }
.field label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.field input, .field textarea, .field select {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-raised);
  color: var(--ink);
}
.field textarea { min-height: 120px; resize: vertical; }
.field-error {
  font-size: 13px;
  color: #b3432b;
}
.honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; }
.form-success {
  display: none;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--ink);
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 15px;
}
.form-success.active { display: block; }
.form-error-banner {
  display: none;
  color: #b3432b;
  font-size: 14px;
}
.form-error-banner.active { display: block; }

/* ---------- Privacy note block ---------- */
.privacy-note {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  border-left: 2px solid var(--accent);
  padding-left: 18px;
  color: var(--muted);
  font-size: 16px;
}

/* ---------- Footer ---------- */
footer {
  padding: 48px 0 64px;
  border-top: 1px solid var(--line);
}
footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
footer .brand-mark {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--muted);
}
footer .foot-links {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
}
footer .foot-links a { color: var(--muted); text-decoration: none; }
footer .foot-links a:hover { color: var(--accent); }

@media (max-width: 560px) {
  .segmented { grid-template-columns: 1fr; }
  .segmented .thumb { display: none; }
}