/* =====================================================================
   BookPilot AI — public landing page
   Builds on design-system.css; only page-specific layout lives here.
   ===================================================================== */

.bp-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bp-page) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--bp-border);
}
.bp-nav__inner {
  max-width: var(--bp-content-max);
  margin: 0 auto;
  padding: 0 var(--bp-6);
  height: var(--bp-topbar-height);
  display: flex;
  align-items: center;
  gap: var(--bp-6);
}
.bp-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--bp-font-serif);
  font-size: 1.16rem;
  color: var(--bp-text);
  letter-spacing: -0.01em;
}
.bp-logo:hover { text-decoration: none; }
.bp-logo__mark {
  display: inline-block;
  width: 26px;
  height: 26px;
  background: url('/assets/brand/logo-mark.svg') center / contain no-repeat;
}
/* The mark is two-tone, so it cannot be recoloured with currentColor:
   the dark theme gets its own artwork, following the same selector
   pair the tokens use — media query for "system", attribute for an
   explicit choice. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) .bp-logo__mark {
    background-image: url('/assets/brand/logo-mark-dark.svg');
  }
}
:root[data-theme='dark'] .bp-logo__mark {
  background-image: url('/assets/brand/logo-mark-dark.svg');
}
.bp-logo__ai {
  font-family: var(--bp-font-sans);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--bp-primary);
  text-transform: uppercase;
  align-self: center;
}

.bp-nav__links { display: flex; gap: var(--bp-5); margin-left: auto; }
.bp-nav__link { color: var(--bp-text-muted); font-size: 0.92rem; }
.bp-nav__link:hover { color: var(--bp-text); text-decoration: none; }
.bp-nav__actions { display: flex; align-items: center; gap: var(--bp-2); }

@media (max-width: 860px) {
  .bp-nav__links { display: none; }
  .bp-nav__inner { padding: 0 var(--bp-4); gap: var(--bp-3); }
  .bp-nav__actions { margin-left: auto; }
}

.bp-section {
  max-width: var(--bp-content-max);
  margin: 0 auto;
  padding: var(--bp-20) var(--bp-6);
}
.bp-section--tight { padding-top: var(--bp-12); padding-bottom: var(--bp-12); }
.bp-band { background: var(--bp-surface); border-block: 1px solid var(--bp-border); }

.bp-section__head { max-width: 62ch; margin-bottom: var(--bp-10); }
.bp-section__head--center { margin-inline: auto; text-align: center; }
.bp-section__title {
  font-family: var(--bp-font-serif);
  font-weight: 400;
  margin: var(--bp-2) 0 var(--bp-3);
}

@media (max-width: 700px) {
  .bp-section { padding: var(--bp-12) var(--bp-4); }
}

/* ---- Hero ---------------------------------------------------------- */

.bp-hero { padding-top: var(--bp-16); padding-bottom: var(--bp-12); }
.bp-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: var(--bp-12);
  align-items: center;
}
@media (max-width: 980px) {
  .bp-hero__grid { grid-template-columns: 1fr; gap: var(--bp-10); }
}

.bp-hero__title {
  font-family: var(--bp-font-serif);
  font-weight: 400;
  font-size: clamp(2.3rem, 1.5rem + 3.1vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: var(--bp-5);
}
.bp-hero__sub {
  font-size: 1.1rem;
  color: var(--bp-text-muted);
  max-width: 52ch;
  margin-bottom: var(--bp-6);
}
.bp-hero__ctas { display: flex; flex-wrap: wrap; gap: var(--bp-3); margin-bottom: var(--bp-5); }
.bp-hero__note { font-size: 0.85rem; color: var(--bp-text-subtle); }

/* ---- The dashboard illustration -----------------------------------
   A styled mock of the product, not a screenshot of live results. It
   carries its own "Example interface" label so no visitor can read the
   numbers as somebody's actual sales.                                 */

.bp-mock {
  position: relative;
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-xl);
  background: var(--bp-surface);
  box-shadow: var(--bp-shadow-lg);
  overflow: hidden;
}
.bp-mock__bar {
  display: flex;
  align-items: center;
  gap: var(--bp-2);
  padding: 10px var(--bp-4);
  border-bottom: 1px solid var(--bp-border);
  background: var(--bp-sunken);
}
.bp-mock__dot { width: 9px; height: 9px; border-radius: 50%; background: var(--bp-border-strong); }
.bp-mock__title { margin-left: var(--bp-2); font-size: 0.78rem; color: var(--bp-text-subtle); }
.bp-mock__body { padding: var(--bp-5); display: grid; gap: var(--bp-4); }
.bp-mock__top { display: grid; grid-template-columns: 76px 1fr; gap: var(--bp-4); align-items: start; }
.bp-mock__stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--bp-2); }
.bp-mock__stat {
  padding: 10px;
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-sm);
  background: var(--bp-page);
}
.bp-mock__stat b { display: block; font-size: 1.02rem; font-weight: 500; font-variant-numeric: tabular-nums; }
.bp-mock__stat span { font-size: 0.64rem; letter-spacing: 0.07em; text-transform: uppercase; color: var(--bp-text-subtle); }
.bp-mock__caption {
  padding: 0 var(--bp-5) var(--bp-4);
  font-size: 0.72rem;
  color: var(--bp-text-subtle);
}
@media (max-width: 520px) {
  .bp-mock__stats { grid-template-columns: repeat(2, 1fr); }
}

/* ---- Steps --------------------------------------------------------- */

.bp-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(232px, 1fr)); gap: var(--bp-4); }
.bp-step {
  padding: var(--bp-5);
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-lg);
  background: var(--bp-surface);
}
.bp-step__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-bottom: var(--bp-3);
  border-radius: 50%;
  background: var(--bp-primary-soft);
  border: 1px solid var(--bp-primary-border);
  color: var(--bp-primary-text);
  font-size: 0.82rem;
  font-weight: 600;
}
.bp-step h3 { font-size: 1rem; margin-bottom: 5px; }
.bp-step p { font-size: 0.9rem; color: var(--bp-text-muted); }

/* ---- Feature list -------------------------------------------------- */

.bp-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--bp-6); }
.bp-feature__icon { font-size: 1.3rem; margin-bottom: var(--bp-2); }
.bp-feature h3 { font-size: 1rem; margin-bottom: 6px; }
.bp-feature p { font-size: 0.92rem; color: var(--bp-text-muted); }

/* ---- Sample creative cards ----------------------------------------- */

.bp-samples { display: grid; grid-template-columns: repeat(auto-fit, minmax(206px, 1fr)); gap: var(--bp-4); }
.bp-sample {
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-lg);
  background: var(--bp-surface);
  overflow: hidden;
}
.bp-sample__frame {
  aspect-ratio: 4 / 5;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  padding: var(--bp-4);
  background: linear-gradient(160deg, var(--bp-primary-soft), var(--bp-accent-soft));
  border-bottom: 1px solid var(--bp-border);
}
.bp-sample__hook {
  font-family: var(--bp-font-serif);
  font-size: 1.02rem;
  line-height: 1.25;
  color: var(--bp-text);
}
.bp-sample__meta {
  padding: var(--bp-3) var(--bp-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--bp-2);
}

/* ---- Pricing ------------------------------------------------------- */

.bp-pricing { display: grid; grid-template-columns: repeat(auto-fit, minmax(238px, 1fr)); gap: var(--bp-4); align-items: stretch; }
.bp-plan {
  display: flex;
  flex-direction: column;
  padding: var(--bp-6);
  border: 1px solid var(--bp-border);
  border-radius: var(--bp-radius-lg);
  background: var(--bp-surface);
}
.bp-plan--featured { border-color: var(--bp-primary); box-shadow: var(--bp-shadow); }
.bp-plan__name { font-size: 0.78rem; letter-spacing: 0.09em; text-transform: uppercase; color: var(--bp-text-subtle); font-weight: 600; }
.bp-plan__price { font-family: var(--bp-font-serif); font-size: 2.1rem; line-height: 1.1; margin: var(--bp-2) 0 var(--bp-1); }
.bp-plan__period { font-size: 0.85rem; color: var(--bp-text-subtle); }
.bp-plan__features { list-style: none; padding: 0; margin: var(--bp-5) 0; font-size: 0.9rem; flex: 1; }
.bp-plan__features li { display: flex; gap: 8px; padding: 5px 0; color: var(--bp-text-muted); }
.bp-plan__features li::before { content: '✓'; color: var(--bp-success); flex: none; }

/* ---- FAQ ----------------------------------------------------------- */

.bp-faq { max-width: 760px; margin: 0 auto; }
.bp-faq details { border-bottom: 1px solid var(--bp-border); padding: var(--bp-4) 0; }
.bp-faq summary {
  cursor: pointer;
  font-weight: 500;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: var(--bp-4);
}
.bp-faq summary::-webkit-details-marker { display: none; }
.bp-faq summary::after { content: '+'; color: var(--bp-text-subtle); font-size: 1.2rem; line-height: 1; }
.bp-faq details[open] summary::after { content: '−'; }
.bp-faq details p { margin-top: var(--bp-3); color: var(--bp-text-muted); font-size: 0.94rem; }

/* ---- Final CTA ----------------------------------------------------- */

.bp-cta-band {
  border: 1px solid var(--bp-primary-border);
  border-radius: var(--bp-radius-xl);
  background: var(--bp-primary-soft);
  padding: var(--bp-12) var(--bp-6);
  text-align: center;
}

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

.bp-footer { border-top: 1px solid var(--bp-border); background: var(--bp-surface); }
.bp-footer__inner {
  max-width: var(--bp-content-max);
  margin: 0 auto;
  padding: var(--bp-12) var(--bp-6);
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--bp-8);
}
.bp-footer h4 { font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--bp-text-subtle); margin-bottom: var(--bp-3); }
.bp-footer ul { list-style: none; padding: 0; margin: 0; }
.bp-footer li { padding: 3px 0; }
.bp-footer a { color: var(--bp-text-muted); font-size: 0.9rem; }
.bp-footer a:hover { color: var(--bp-text); }
.bp-footer__legal { border-top: 1px solid var(--bp-border); padding: var(--bp-5) var(--bp-6); font-size: 0.83rem; color: var(--bp-text-subtle); }
.bp-footer__legal-inner {
  max-width: var(--bp-content-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--bp-4);
  justify-content: space-between;
}