/* AskWingman landing page — Spec 18b 2026-05-31.
 *
 * Mid-rich tasteful motion (Anthropic / Notion / Linear product-pages
 * family). Dark theme matching the in-app brand. Typography carries
 * the visual weight; the only motion is hover transforms + scroll
 * fade-ins via IntersectionObserver. Honors prefers-reduced-motion.
 *
 * No CSS framework; no preprocessor. ~500 LOC target.
 */

/* ── Variables (mirror static/index.html's in-app brand) ─────────── */
:root {
  --bg:           #111418;
  --bg-elevated: #181c22;
  --bg-card:     #1d2229;
  --border:      #2a2f37;
  --text:        #e8ebf0;
  --text-dim:    #8b94a3;
  --text-faint:  #5a6373;
  --amber:       #e8a020;
  --amber-glow:  rgba(232, 160, 32, 0.18);
  --green:       #2ea36b;
  --max-width:   1080px;
  --font-display: 'Orbitron', 'Segoe UI', system-ui, sans-serif;
  --font-body:   'Barlow', 'Segoe UI', system-ui, sans-serif;
  --font-mono:   ui-monospace, 'SF Mono', Menlo, monospace;
}

/* ── Reset & base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Section shell ────────────────────────────────────────────────── */
section {
  padding: 80px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: 0.04em;
  color: var(--text);
  margin: 0 0 32px 0;
  text-align: center;
}

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 64px 24px;
  text-align: center;
  position: relative;
  background:
    radial-gradient(ellipse at top, rgba(232, 160, 32, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse at bottom, rgba(46, 163, 107, 0.04) 0%, transparent 60%),
    var(--bg);
}
.hero-inner {
  max-width: 760px;
  margin: 0 auto;
}
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.4em;
  color: var(--amber);
  text-transform: uppercase;
  margin-bottom: 28px;
}
.tagline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 6vw, 60px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  margin: 0 0 24px 0;
  color: var(--text);
}
.subtag {
  font-size: 19px;
  color: var(--text-dim);
  margin: 0 auto 40px auto;
  max-width: 560px;
}

/* ── Primary CTA ──────────────────────────────────────────────────── */
.cta-primary {
  display: inline-block;
  background: var(--amber);
  color: #1a1d22;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 14px 32px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  text-decoration: none;
}
.cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--amber-glow);
  text-decoration: none;
}
.cta-primary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ── Trust badge row ──────────────────────────────────────────────── */
.trust-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 48px;
}
.trust-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elevated);
}

/* ── Features grid ────────────────────────────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px 28px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--amber);
}
.feature-icon {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--amber);
  margin-bottom: 12px;
  line-height: 1;
}
.feature-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 12px 0;
  color: var(--text);
}
.feature-card p {
  font-size: 15px;
  color: var(--text-dim);
  margin: 0;
}

/* ── Case study ───────────────────────────────────────────────────── */
.case-intro {
  text-align: center;
  font-size: 17px;
  color: var(--text-dim);
  margin: -16px auto 40px auto;
  max-width: 680px;
}
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px;
}
.case-q, .case-a {
  margin-bottom: 24px;
}
.case-a {
  margin-bottom: 16px;
}
.case-q-label, .case-a-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.case-q-text {
  font-size: 18px;
  color: var(--text);
  font-style: italic;
}
.case-a-text p {
  margin: 0 0 14px 0;
  font-size: 16px;
  color: var(--text);
}
.case-a-text p:last-child { margin-bottom: 0; }
.case-citations {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}
.case-cite-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.case-cite-chip {
  display: inline-block;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  margin-right: 8px;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}
.case-caption {
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-faint);
  font-style: italic;
}

/* ── Pricing ──────────────────────────────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}
.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 36px 32px;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.plan-card:hover {
  transform: translateY(-3px);
}
.plan-card-emphasis {
  border-color: var(--amber);
  box-shadow: 0 0 0 1px var(--amber);
}
.plan-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 10px;
}
.plan-price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 36px;
  color: var(--text);
  margin-bottom: 4px;
}
.plan-cycle {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  color: var(--text-dim);
}
.plan-price-alt {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 20px;
}
.plan-features {
  list-style: none;
  padding: 0;
  margin: 16px 0 0 0;
}
.plan-features li {
  font-size: 15px;
  color: var(--text);
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.plan-features li:last-child { border-bottom: none; }
.invite-only-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-faint);
  margin: 0;
}

/* ── Invite form ──────────────────────────────────────────────────── */
.invite-intro {
  text-align: center;
  color: var(--text-dim);
  margin: -16px auto 32px auto;
  max-width: 480px;
}
.invite-form {
  max-width: 540px;
  margin: 0 auto;
}
.field {
  display: block;
  margin-bottom: 20px;
}
.field-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 11px 14px;
  font-family: var(--font-body);
  font-size: 16px;  /* ≥16px keeps iOS Safari from zooming on focus */
  transition: border-color 0.15s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--amber);
}
.field textarea { resize: vertical; min-height: 80px; font-family: var(--font-body); }
#invite-submit {
  display: block;
  width: 100%;
  margin-top: 8px;
}
.form-status {
  margin-top: 16px;
  text-align: center;
  font-size: 14px;
  min-height: 24px;
}
.form-status.status-success { color: var(--green); }
.form-status.status-error { color: #d33; }
.form-status.status-busy { color: var(--text-dim); }

/* ── Footer ───────────────────────────────────────────────────────── */
.site-footer {
  padding: 40px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
  margin-top: 40px;
  color: var(--text-faint);
  font-size: 13px;
}
.footer-link { color: var(--text-dim); }
.copyright { margin-top: 8px; font-size: 12px; }

/* ── Scroll fade-in (set by JS IntersectionObserver) ──────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Reduced motion (accessibility) ───────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .fade-in {
    opacity: 1;
    transform: none;
  }
  .cta-primary:hover,
  .feature-card:hover,
  .plan-card:hover { transform: none; }
}

/* ── Mobile (≤640px) ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  section { padding: 56px 20px; }
  .hero { min-height: 60vh; padding: 56px 20px 48px 20px; }
  .tagline { font-size: clamp(32px, 8vw, 44px); }
  .subtag { font-size: 17px; }
  .section-title { font-size: 24px; margin-bottom: 24px; }
  .trust-row { gap: 10px; margin-top: 36px; }
  .trust-pill { font-size: 10px; padding: 5px 12px; }
  .case-card,
  .feature-card,
  .plan-card { padding: 24px 20px; }
}