/* ============================================================
   BlueLetter pre-launch landing pages — shared scaffolding
   Builds on shared/colors_and_type.css tokens. Token-driven so
   [data-theme="dark"] flips every component automatically.
   ============================================================ */

html { scroll-behavior: smooth; }
html[data-motion="off"] *,
html[data-motion="off"] *::before,
html[data-motion="off"] *::after {
  animation-duration: 0.001s !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.001s !important;
}

/* ---------- Nav ---------- */
.bl-nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--canvas);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease);
}
.bl-nav.scrolled { border-bottom-color: var(--hairline); }
.bl-nav-inner {
  max-width: 1400px; margin: 0 auto; height: 64px;
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.bl-nav-left { display: flex; align-items: center; gap: 32px; min-width: 0; }
.bl-wordmark {
  font-family: var(--font-sans); font-size: 22px; font-weight: 600;
  letter-spacing: -0.88px; color: var(--ink); text-decoration: none;
  white-space: nowrap;
}
.bl-wordmark .dot { color: var(--mute); }
.bl-nav-links { display: flex; gap: 18px; }
.bl-nav-links a {
  font-size: 14px; letter-spacing: -0.28px; color: var(--body);
  text-decoration: none; white-space: nowrap;
  transition: color var(--dur-fast) var(--ease);
}
.bl-nav-links a:hover { color: var(--ink); }
.bl-nav-right { display: flex; align-items: center; gap: 8px; }

/* ---------- Waitlist form ---------- */
.bl-waitlist { width: 100%; max-width: 460px; }
.bl-waitlist form {
  display: flex; gap: 8px; align-items: stretch;
}
.bl-waitlist input[type="email"] {
  flex: 1; min-width: 0; height: 48px;
  background: var(--canvas); color: var(--ink);
  font-family: var(--font-sans); font-size: var(--body-sm-size);
  letter-spacing: var(--body-sm-tracking);
  padding: 0 var(--space-md);
  border: 1px solid var(--hairline); border-radius: var(--rounded-pill);
  outline: none;
  transition: border-color var(--dur-fast) var(--ease);
}
.bl-waitlist input[type="email"]:focus { border-color: var(--primary); }
.bl-waitlist input[type="email"]::placeholder { color: var(--mute); }
.bl-waitlist .btn-primary { flex-shrink: 0; }
.bl-waitlist-note {
  font-family: var(--font-mono); font-size: var(--caption-size);
  line-height: var(--caption-lh); color: var(--mute);
  margin-top: var(--space-sm);
}
.bl-waitlist .success {
  display: none; align-items: center; gap: 10px;
  height: 48px; padding: 0 var(--space-md);
  background: var(--canvas); border-radius: var(--rounded-pill);
  box-shadow: var(--elev-2);
  font-family: var(--font-mono); font-size: 13px; color: var(--ink);
}
.bl-waitlist.joined form { display: none; }
.bl-waitlist.joined .success { display: inline-flex; }
.bl-waitlist .success .check { color: var(--success-deep); display: inline-flex; }

/* ---------- Direction switcher (review chrome) ---------- */
.bl-switcher {
  position: fixed; left: 16px; bottom: 16px; z-index: 90;
  display: flex; align-items: center; gap: 2px;
  background: var(--canvas); border-radius: var(--rounded-pill);
  box-shadow: var(--elev-5); padding: 4px;
}
.bl-switcher .lbl {
  font-family: var(--font-mono); font-size: 11px; color: var(--mute);
  padding: 0 8px 0 10px; font-variant-caps: all-small-caps; letter-spacing: 0.04em;
}
.bl-switcher a {
  display: inline-flex; align-items: center; justify-content: center;
  height: 28px; padding: 0 12px; border-radius: var(--rounded-pill);
  font-family: var(--font-mono); font-size: 12px;
  color: var(--body); text-decoration: none; white-space: nowrap;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.bl-switcher a:hover { background: var(--canvas-soft-2); color: var(--ink); }
.bl-switcher a.active { background: var(--primary); color: var(--on-primary); }

/* ---------- Footer ---------- */
.bl-footer {
  background: var(--canvas); padding: 64px 24px 48px;
  border-top: 1px solid var(--hairline);
}
.bl-footer-inner { max-width: 1200px; margin: 0 auto; }
.bl-footer-grid {
  display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px;
}
.bl-footer-tagline {
  font-size: 14px; line-height: 20px; color: var(--body);
  letter-spacing: -0.28px; margin: 12px 0 0; max-width: 280px;
}
.bl-footer-col { display: flex; flex-direction: column; gap: 8px; }
.bl-footer-col a {
  font-size: 14px; color: var(--body); text-decoration: none;
  letter-spacing: -0.28px;
}
.bl-footer-col a:hover { color: var(--ink); }
.bl-footer-bottom {
  border-top: 1px solid var(--hairline); margin-top: 48px; padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.bl-footer-bottom span {
  font-family: var(--font-mono); font-size: 12px; color: var(--mute);
}

/* ---------- Eyebrow ---------- */
.eyebrow {
  font-family: var(--font-mono); font-size: var(--caption-size);
  line-height: var(--caption-lh); color: var(--body);
  font-variant-caps: all-small-caps; letter-spacing: 0.04em;
}

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.in {
  opacity: 1; transform: none;
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}
html[data-motion="off"] .reveal,
html[data-motion="off"] .reveal.in { opacity: 1; transform: none; transition: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.in { opacity: 1; transform: none; transition: none; }
}

/* ---------- Tweaks mount ---------- */
#tweaks-root { position: relative; z-index: 100; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .bl-nav-links { display: none; }
  .bl-footer-grid { grid-template-columns: 1fr 1fr; }
  .bl-waitlist form { flex-direction: column; }
  .bl-waitlist .btn-primary { width: 100%; }
}