/* ============================================================
   WhichBookWhen — marketing landing page
   A book's title page that answers itself.
   Shares the app's "private library" tokens; tuned for editorial scale.
   ============================================================ */

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

:root {
  --bg: #f6efe1;
  --bg-soft: #faf5ea;
  --surface: #fffdf7;
  --surface-warm: #fcf8ee;
  --paper-deep: #f1e7d2;
  --border: #e3d8c2;
  --border-strong: #cdbc9d;
  --text: #241d13;
  --muted: #75685a;
  --muted-strong: #5c5040;
  --accent: #2d5848;
  --accent-hover: #214437;
  --accent-wash: #f0f3ec;
  --gold: #8a6420;
  --gold-bright: #b8893b;
  --stamp: #b14a2c;
  --stamp-soft: #f9ece5;
  --yes: #2c6e49;
  --yes-soft: #e3f0e3;
  --maybe-soft: #f8ecd2;
  --maybe-deep: #6e4a0c;
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-ui: "Instrument Sans", -apple-system, "Segoe UI", sans-serif;
  --ease: cubic-bezier(.2, 0, 0, 1);
}

html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(130% 50% at 50% 0%, rgba(255, 252, 243, .95) 0%, rgba(255, 252, 243, 0) 60%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* book spine band */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(to bottom, var(--accent) 0 4px, var(--gold-bright) 4px 5px, transparent 5px);
  z-index: 50;
  pointer-events: none;
}

/* paper grain */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1;
}

main, header.masthead, footer { position: relative; z-index: 2; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fbf6ea; padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

a:focus-visible, button:focus-visible {
  outline: 3px solid #1d4ed8;
  outline-offset: 2px;
}

/* ---------------- Masthead ---------------- */

.masthead {
  max-width: 1040px;
  margin: 0 auto;
  padding: 26px 24px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.brand-mark { width: 40px; height: 40px; }
.wordmark { font-family: var(--font-display); font-size: 1.35rem; letter-spacing: -.01em; }
.wordmark i { font-style: italic; font-weight: 500; }
.wordmark b { font-weight: 700; color: var(--accent); font-style: normal; }
.wordmark.small { font-size: 1.1rem; }

.masthead-nav { display: flex; align-items: center; gap: 22px; }
.masthead-nav a {
  color: var(--muted-strong);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
.masthead-nav a:hover { color: var(--accent); }
.btn-ghost-nav {
  border: 1.5px solid var(--border-strong);
  border-radius: 8px;
  padding: 7px 16px;
  color: var(--accent) !important;
}
.btn-ghost-nav:hover { background: var(--accent-wash); border-color: var(--accent); }

.masthead-rule {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.masthead-rule::after {
  content: "";
  display: block;
  border-bottom: 1px solid var(--border);
  margin-top: 2px;
}

/* ---------------- Hero: the title page ---------------- */

.hero {
  max-width: 880px;
  margin: 0 auto;
  padding: 9vh 24px 48px;
  text-align: center;
}

.eyebrow {
  color: var(--gold);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.eyebrow::before { content: "❦"; margin-right: .6em; }
.eyebrow::after { content: "❦"; margin-left: .6em; }

.hero-title {
  font-family: var(--font-display);
  font-weight: 550;
  font-size: clamp(3rem, 9.5vw, 6.2rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: 26px 0 10px;
}
.hero-title .q { display: block; }
.hero-title em { font-style: italic; }
.hero-title .q:nth-child(2) em { color: var(--accent); }

.hero-stamp {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--stamp);
  border: 3px solid var(--stamp);
  box-shadow: inset 0 0 0 2px var(--stamp-soft), inset 0 0 0 3.5px var(--stamp);
  border-radius: 10px;
  padding: 6px 26px 8px;
  transform: rotate(-3deg);
  margin: 18px 0 8px;
  animation: stamp-in .5s var(--ease) .35s both;
}
.stamp-period { color: var(--gold-bright); }

@keyframes stamp-in {
  0% { opacity: 0; transform: rotate(-8deg) scale(1.6); }
  60% { opacity: 1; transform: rotate(-3deg) scale(.96); }
  80% { transform: rotate(-3deg) scale(1.02); }
  100% { transform: rotate(-3deg) scale(1); }
}

.hero-sub {
  max-width: 620px;
  margin: 26px auto 0;
  font-size: 1.16rem;
  color: var(--muted-strong);
}
.hero-sub strong { color: var(--text); }

.hero-ctas {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 34px;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fbf6ea;
  font-weight: 650;
  font-size: 16.5px;
  text-decoration: none;
  border-radius: 10px;
  padding: 15px 32px;
  box-shadow: 0 1px 0 rgba(46,35,19,.2), inset 0 1px 0 rgba(255,255,255,.12);
  transition: background .15s var(--ease), transform .12s var(--ease);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { transform: translateY(1px); }

.btn-ghost {
  display: inline-block;
  color: var(--accent);
  font-weight: 650;
  font-size: 16.5px;
  text-decoration: none;
  border: 1.5px solid var(--border-strong);
  border-radius: 10px;
  padding: 15px 28px;
  transition: background .15s var(--ease), border-color .15s var(--ease);
}
.btn-ghost:hover { background: var(--accent-wash); border-color: var(--accent); }

.hero-footnote { margin-top: 18px; font-size: 13.5px; color: var(--muted); font-style: italic; }

/* ---------------- Shelf: the two artifacts ---------------- */

.shelf {
  max-width: 1040px;
  margin: 30px auto 0;
  padding: 0 24px 30px;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 40px;
  align-items: center;
}

.shot { margin: 0; }
.shot figcaption {
  text-align: center;
  margin-top: 16px;
  font-size: 14px;
  color: var(--muted);
  font-style: italic;
}

/* phone frame */
.phone-frame {
  width: min(310px, 100%);
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 34px;
  padding: 16px 14px 22px;
  box-shadow: 0 3px 6px rgba(46,35,19,.07), 0 24px 48px rgba(46,35,19,.14);
  transform: rotate(-1.4deg);
}
.phone-frame::before {
  content: "";
  display: block;
  width: 64px; height: 5px;
  border-radius: 999px;
  background: var(--border);
  margin: 0 auto 14px;
}

.mock { font-size: 13px; }
.mock-eyebrow { color: var(--gold); font-size: 9.5px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.mock-title { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; margin: 2px 0 10px; }
.mock-progress {
  display: flex; justify-content: space-between; align-items: baseline;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--surface-warm);
  padding: 8px 11px; margin-bottom: 10px;
}
.mock-progress strong { font-family: var(--font-display); font-size: 12.5px; }
.mock-progress span { color: var(--muted); font-style: italic; font-size: 11px; }
.mock-option {
  border: 1px solid var(--border); border-radius: 12px;
  padding: 10px 12px; margin-bottom: 9px; background: var(--surface);
}
.mock-option:first-of-type { box-shadow: inset 3px 0 0 var(--accent); }
.mock-kicker { display: block; color: var(--gold); font-size: 9px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.mock-kicker.gold { font-size: 10.5px; }
.mock-date { display: block; font-family: var(--font-display); font-weight: 600; font-size: 14.5px; margin: 1px 0 8px; }
.mock-pills { display: flex; gap: 6px; }
.mock-pill {
  flex: 1; text-align: center;
  border: 1.5px solid var(--border-strong); border-radius: 999px;
  padding: 7px 0; font-weight: 600; font-size: 11.5px; color: var(--muted-strong);
  background: var(--surface);
}
.mock-pill.yes { background: var(--yes); border-color: var(--yes); color: #f3f9f1; }
.mock-pill.maybe { background: var(--maybe-soft); border-color: var(--maybe-deep); color: var(--maybe-deep); }
.mock-stamp {
  border: 2px solid var(--stamp);
  box-shadow: inset 0 0 0 1.5px var(--stamp-soft), inset 0 0 0 2.5px var(--stamp);
  border-radius: 8px;
  color: var(--stamp);
  font-family: var(--font-display);
  font-weight: 650; font-size: 12px;
  text-transform: uppercase; letter-spacing: .04em;
  padding: 9px 12px;
  transform: rotate(-1.4deg);
  margin-top: 4px;
}

/* bookplate frame */
.plate-frame {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  padding: 26px;
  box-shadow: 0 2px 4px rgba(46,35,19,.06), 0 18px 40px rgba(46,35,19,.12);
  transform: rotate(.6deg);
}
.mock-plate {
  border: 1px solid var(--border-strong);
  box-shadow: inset 0 0 0 4px var(--surface-warm), inset 0 0 0 5px var(--border-strong);
  border-radius: 12px;
  background: var(--surface-warm);
  padding: 26px 28px;
}
.plate-date { font-family: var(--font-display); font-size: 2rem; font-weight: 600; line-height: 1.15; margin: 4px 0 4px; }
.plate-note { color: var(--muted-strong); font-size: 14.5px; }
.plate-stats { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.plate-stats span {
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(255,253,247,.85);
  padding: 3px 12px;
  font-size: 12.5px; font-weight: 600; color: var(--muted-strong);
}
.plate-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
.plate-btn {
  border: 1.5px solid var(--border-strong);
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600; font-size: 13.5px; color: var(--accent);
}
.plate-btn.solid { background: var(--accent); border-color: var(--accent); color: #fbf6ea; }

/* ---------------- How: table of contents ---------------- */

.how { max-width: 760px; margin: 0 auto; padding: 64px 24px 24px; text-align: center; }
.section-title { font-family: var(--font-display); font-size: clamp(1.9rem, 4.5vw, 2.6rem); font-weight: 600; }
.toc-rule { color: var(--gold-bright); margin: 14px 0 34px; font-size: 1.05rem; display: flex; align-items: center; gap: 16px; justify-content: center; }
.toc-rule::before, .toc-rule::after {
  content: ""; flex: 1; max-width: 180px; height: 1px;
  background: linear-gradient(to right, transparent, var(--border-strong));
}
.toc-rule::after { background: linear-gradient(to left, transparent, var(--border-strong)); }

.toc { list-style: none; text-align: left; display: flex; flex-direction: column; gap: 26px; }
.toc li { display: flex; gap: 22px; align-items: baseline; }
.toc-num {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.7rem;
  color: var(--gold-bright);
  min-width: 52px;
  text-align: right;
}
.toc h3 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; margin-bottom: 4px; }
.toc p { color: var(--muted-strong); font-size: 15.5px; max-width: 56ch; }

/* ---------------- Features ---------------- */

.features {
  max-width: 1040px;
  margin: 0 auto;
  padding: 48px 24px 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 22px;
  box-shadow: 0 1px 2px rgba(46,35,19,.05);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.feature:hover { transform: translateY(-3px); border-color: var(--border-strong); box-shadow: 0 12px 28px rgba(46,35,19,.1); }
.feature h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
.feature p { color: var(--muted-strong); font-size: 14.5px; }
.feature-soon { background: var(--surface-warm); border-style: dashed; border-color: var(--border-strong); }
.soon-kicker { color: var(--stamp); font-size: 10.5px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; margin-bottom: 6px; }

/* ---------------- Quote ---------------- */

.quote { max-width: 720px; margin: 0 auto; padding: 64px 24px 40px; text-align: center; }
.quote p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  line-height: 1.35;
  color: var(--text);
}
.quote cite { display: block; margin-top: 16px; font-style: normal; color: var(--gold); font-weight: 600; font-size: 14px; letter-spacing: .06em; }

/* ---------------- Closing ---------------- */

.closing { padding: 30px 24px 90px; text-align: center; }
.closing-stamp {
  display: inline-block;
  border: 3px solid var(--stamp);
  box-shadow: inset 0 0 0 2px var(--stamp-soft), inset 0 0 0 3.5px var(--stamp);
  border-radius: 14px;
  padding: 40px 56px 44px;
  transform: rotate(-.8deg);
  background: rgba(255, 253, 247, .6);
}
.closing-stamp h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.5vw, 2.4rem);
  font-weight: 650;
  color: var(--stamp);
}
.closing-stamp p { color: var(--muted-strong); margin: 8px 0 24px; }

/* ---------------- Footer ---------------- */

.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 36px 24px 44px;
  text-align: center;
}
.footer-brand p { color: var(--muted); font-size: 14px; margin-top: 4px; font-style: italic; }
.footer-nav { display: flex; justify-content: center; gap: 24px; margin: 18px 0 10px; }
.footer-nav a { color: var(--accent); font-weight: 600; font-size: 14px; text-decoration: none; }
.footer-nav a:hover { text-decoration: underline; text-underline-offset: 3px; }
.footer-fine { color: var(--muted); font-size: 12.5px; }

/* ---------------- Entrance motion ---------------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero > *, .shelf > * { animation: rise .55s var(--ease) both; }
.hero > *:nth-child(2) { animation-delay: 70ms; }
.hero > *:nth-child(3) { animation-delay: 140ms; }
.hero > *:nth-child(4) { animation-delay: 220ms; }
.hero > *:nth-child(5) { animation-delay: 300ms; }
.hero > *:nth-child(6) { animation-delay: 360ms; }
.shelf > *:nth-child(1) { animation-delay: 420ms; }
.shelf > *:nth-child(2) { animation-delay: 500ms; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-delay: 0ms !important;
    transition-duration: .01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ---------------- Mobile ---------------- */

@media (max-width: 880px) {
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .shelf { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .masthead { padding: 20px 18px 12px; }
  .masthead-nav a:not(.btn-ghost-nav) { display: none; }
  .hero { padding-top: 7vh; }
  .features { grid-template-columns: 1fr; }
  .toc li { flex-direction: column; gap: 4px; }
  .toc-num { text-align: left; min-width: 0; }
  .closing-stamp { padding: 30px 26px 34px; }
  .hero-ctas .btn-primary, .hero-ctas .btn-ghost { width: 100%; text-align: center; }
}