/* AI for Boomers — Levered Press one-pager
   Swap SITE_ORIGIN in index.html meta/JSON-LD when you pick a domain. */
:root {
  --cream: #faf4e8;
  --cream-dark: #f0e6d2;
  --ink: #1f1a2e;
  --ink-soft: #3d3554;
  --purple: #5b3a8c;
  --purple-deep: #3f2468;
  --lavender: #c9b5e8;
  --lavender-soft: #e8dff5;
  --coral: #c45c3a;
  --coral-hover: #a8482c;
  --white: #ffffff;
  --shadow: 0 12px 40px rgba(31, 26, 46, 0.12);
  --radius: 18px;
  --max: 1100px;
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.125rem; /* 18px */
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--purple); }
a:hover { color: var(--coral); }

.skip {
  position: absolute;
  left: -9999px;
  top: auto;
}
.skip:focus {
  left: 1rem; top: 1rem; z-index: 100;
  background: var(--white); padding: .75rem 1rem;
  border-radius: 8px; color: var(--ink); font-weight: 700;
}

.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  background: var(--white);
  border-bottom: 2px solid var(--cream-dark);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100%, var(--max));
  padding: .85rem 1.25rem;
  box-sizing: border-box;
}
.brand {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--purple-deep);
  text-decoration: none;
  letter-spacing: .02em;
}
.brand span { color: var(--coral); }
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem .9rem;
  list-style: none;
  margin: 0; padding: 0;
}
.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 1rem;
}
.nav a:hover { color: var(--purple); }

.nav-checkbox {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
}
.nav-toggle { display: none; }

/* Hero */
.hero {
  padding: 3.5rem 0 2.5rem;
  background:
    radial-gradient(ellipse 80% 60% at 85% 10%, rgba(201,181,232,.45), transparent 55%),
    radial-gradient(ellipse 60% 50% at 10% 90%, rgba(240,230,210,.9), transparent 50%),
    var(--cream);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 800px) {
  .hero-grid {
    grid-template-columns: minmax(240px, 340px) 1fr;
    gap: 3.5rem;
  }
}
.cover-frame {
  background: var(--white);
  border-radius: 22px;
  padding: .85rem;
  box-shadow: var(--shadow);
  transform: rotate(-1.5deg);
}
.cover-frame img {
  border-radius: 14px;
  width: 100%;
}
.eyebrow {
  display: inline-block;
  background: var(--lavender-soft);
  color: var(--purple-deep);
  font-weight: 700;
  font-size: .95rem;
  padding: .35rem .85rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(2.35rem, 5vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 .75rem;
  color: var(--purple-deep);
  letter-spacing: -0.02em;
}
.tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.2rem, 2.4vw, 1.45rem);
  color: var(--ink-soft);
  margin: 0 0 1.25rem;
  max-width: 36ch;
}
.lead {
  margin: 0 0 1.75rem;
  max-width: 42ch;
  color: var(--ink-soft);
  font-size: 1.2rem;
}
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .9rem 1.35rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform .15s ease, background .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--coral);
  color: var(--white);
}
.btn-primary:hover { background: var(--coral-hover); color: var(--white); }
.btn-secondary {
  background: var(--purple);
  color: var(--white);
}
.btn-secondary:hover { background: var(--purple-deep); color: var(--white); }
.btn-outline {
  background: var(--white);
  color: var(--purple-deep);
  border-color: var(--lavender);
}
.btn-outline:hover {
  border-color: var(--purple);
  color: var(--purple);
}

/* Sections */
section { padding: 3.75rem 0; }
section:nth-of-type(even) { background: var(--white); }
.section-title {
  font-size: clamp(1.85rem, 3.5vw, 2.4rem);
  color: var(--purple-deep);
  margin: 0 0 .5rem;
  letter-spacing: -0.01em;
}
.section-sub {
  margin: 0 0 2rem;
  color: var(--ink-soft);
  max-width: 50ch;
  font-size: 1.15rem;
}

/* Buy */
.buy-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .buy-grid { grid-template-columns: repeat(3, 1fr); }
}
.buy-card {
  background: var(--cream);
  border: 2px solid var(--cream-dark);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .65rem;
  min-height: 100%;
}
section#buy { background: var(--white); }
.buy-card h3 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--purple-deep);
}
.buy-card p {
  margin: 0;
  color: var(--ink-soft);
  flex: 1;
}
.isbn {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--lavender-soft);
  padding: .4rem .7rem;
  border-radius: 8px;
  display: inline-block;
}

/* Inside list */
.inside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}
@media (min-width: 700px) {
  .inside-list { grid-template-columns: 1fr 1fr; }
}
.inside-list li {
  background: var(--cream);
  border-radius: 14px;
  padding: 1.1rem 1.2rem 1.1rem 3.2rem;
  position: relative;
  font-size: 1.15rem;
  border: 1px solid var(--cream-dark);
}
.inside-list li::before {
  content: "✓";
  position: absolute;
  left: 1rem;
  top: 1.05rem;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--purple);
  color: white;
  font-size: .9rem;
  font-weight: 800;
  display: grid;
  place-items: center;
}
.inside-note {
  margin-top: 1.5rem;
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 55ch;
}

/* Samples */
.samples {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .samples { grid-template-columns: repeat(3, 1fr); }
}
.sample {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--cream-dark);
}
.sample img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #fff;
}
.sample figcaption {
  padding: 1rem 1.1rem 1.2rem;
  font-weight: 700;
  color: var(--purple-deep);
  font-size: 1.05rem;
}

/* About */
.about-card {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 52rem;
  border: 1px solid var(--cream-dark);
  box-shadow: var(--shadow);
}
.about-photo {
  width: 168px;
  height: 168px;
  object-fit: cover;
  border-radius: 12px;
  flex-shrink: 0;
  background: var(--cream-dark);
}
.about-copy p {
  margin: 0 0 .9rem;
  font-size: 1.12rem;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 62ch;
}
.about-copy p:last-child { margin-bottom: 0; }
.about-copy cite {
  font-style: italic;
  color: var(--ink);
}
.about-link {
  font-weight: 700;
  font-size: 1.02rem;
  text-decoration: none;
  color: var(--purple);
}
.about-link:hover { color: var(--coral); }

/* Bookstores */
.store-grid {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 700px) {
  .store-grid { grid-template-columns: 1.2fr 1fr; }
}
.store-card {
  background: var(--cream);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 2px solid var(--cream-dark);
}
.store-card h3 {
  margin: 0 0 .85rem;
  color: var(--purple-deep);
  font-size: 1.3rem;
}
.store-card ul {
  margin: 0 0 1.25rem;
  padding-left: 1.2rem;
  color: var(--ink-soft);
}
.store-card li { margin-bottom: .4rem; }
.talk-card {
  background: var(--purple-deep);
  color: var(--cream);
  border-radius: var(--radius);
  padding: 1.75rem;
}
.talk-card h3 { margin: 0 0 .75rem; color: var(--white); font-size: 1.3rem; }
.talk-card p { margin: 0 0 1.25rem; color: var(--lavender-soft); }
.talk-card .btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--lavender);
}
.talk-card .btn-outline:hover {
  background: var(--white);
  color: var(--purple-deep);
}

/* Contact */
.contact-box {
  background: var(--lavender-soft);
  border: 1px solid var(--lavender);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  max-width: 40rem;
}
.contact-lead {
  margin: 0 0 .85rem;
  font-size: 1.15rem;
  color: var(--ink-soft);
}
.contact-email {
  display: block;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  font-weight: 800;
  color: var(--purple-deep);
  text-decoration: none;
  letter-spacing: .01em;
  margin: 0 0 1.4rem;
  overflow-wrap: anywhere;
}
.contact-email:hover { color: var(--coral); }

/* Footer */
.site-footer {
  background: var(--ink);
  color: #d8d0e8;
  padding: 2rem 0;
  font-size: 1rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
}
.site-footer a {
  color: var(--lavender);
  font-weight: 600;
  text-decoration: none;
}
.site-footer a:hover { color: var(--white); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn:hover { transform: none; }
}


/* Mobile: brand + Menu button, stacked links when open */
@media (max-width: 800px) {
  .site-header .wrap {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: .5rem .75rem;
    padding: .7rem 1.25rem;
  }
  .nav-toggle {
    display: inline-flex;
    position: relative;
    align-items: center;
    flex: 0 0 auto;
    gap: .5rem;
    font-weight: 800;
    font-size: 1.05rem;
    color: var(--purple-deep);
    background: var(--lavender-soft);
    border: 2px solid var(--lavender);
    border-radius: 999px;
    padding: .5rem 1rem .5rem .9rem;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
  .nav-toggle-bars,
  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    display: block;
    width: 1.1rem;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
  }
  .nav-toggle-bars {
    position: relative;
  }
  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    content: "";
    position: absolute;
    left: 0;
  }
  .nav-toggle-bars::before { top: -.38rem; }
  .nav-toggle-bars::after { top: .38rem; }
  .nav-toggle-close { display: none; }
  .site-header:has(#nav-open:checked) .nav-toggle-open { display: none; }
  .site-header:has(#nav-open:checked) .nav-toggle-close { display: inline; }
  .site-header nav {
    display: none;
    flex: 1 1 100%;
    width: 100%;
    padding: .25rem 0 .55rem;
    border-top: 1px solid var(--cream-dark);
  }
  .site-header:has(#nav-open:checked) nav { display: block; }
  .nav {
    flex-direction: column;
    gap: 0;
  }
  .nav a {
    display: block;
    padding: .9rem 0;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--cream-dark);
  }
  .nav li:last-child a { border-bottom: 0; }
  .hero { padding: 2rem 0 1.75rem; }
  .cover-frame { transform: none; max-width: 280px; margin-inline: auto; }
  .btn { width: 100%; }
  .btn-row { flex-direction: column; }
  .contact-box { padding: 1.75rem 1.35rem; }
  .contact-box .btn { width: 100%; }
  .about-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.75rem 1.35rem;
  }
  .about-copy p { max-width: none; }
}