/* Spango Moletsi Books, Retro Travel Poster design system
   Source: assets/reference-wallpaper.jpg (flat vector coastal poster)
   Rule: flat colour blocks only. No gradients in UI chrome. No glassmorphism. */

:root {
  /* Palette (exact poster colours) */
  --sky-deep:   #2A6B7A;  /* deep teal sky */
  --sky:        #4A9BA8;  /* light cyan sky, horizon */
  --sea:        #6BBAC4;  /* sea */
  --sea-line:   #4A9BA8;  /* sea texture lines */
  --mountain:   #3A7D8A;  /* far mountain highlight */
  --teal-dark:  #1F5260;  /* INK: near mountains, text, dark bands */
  --sun:        #F2A33C;  /* PRIMARY ACCENT: sun, headlines, CTAs */
  --clay:       #E88B3A;  /* buildings */
  --clay-dark:  #C46B2A;  /* building shadows, secondary CTA */
  --cream:      #F7F2E7;  /* warm cream, light bands */
  --ledger-bg:  #EFE7D4;  /* buckram ledger paper tint */
  --white:      #FFFFFF;
  --ink:        var(--teal-dark);
  --ink-soft:   #2F6B7C;

  /* Type: bold condensed caps for display (poster), clean sans for body */
  --font-display: "Oswald", "Arial Narrow", "Segoe UI", sans-serif;
  --font-body:    "Inter", "Segoe UI", system-ui, sans-serif;
  --font-accent:  "Playfair Display", Georgia, serif;

  /* Shape */
  --radius-block: 0px;
  --radius-ui:    6px;
  --radius-pill:  999px;

  /* Motion: gentle, calm, nostalgic */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 240ms;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--sky-deep); text-decoration: none; }
a:hover { color: var(--clay-dark); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* Top navigation bar */
.topbar {
  background: var(--teal-dark);
  color: var(--white);
  border-bottom: 3px solid var(--sun);
  padding-block: 0.85rem;
}
.topbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.topbar__brand {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 1.2rem;
  color: var(--sun);
}
.topbar__brand:hover { color: var(--white); }
.topbar__nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  flex-wrap: wrap;
}
.topbar__link {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.88rem;
  color: var(--white);
}
.topbar__link:hover { color: var(--sun); }
.btn--sm {
  padding: 0.55rem 1.05rem;
  font-size: 0.82rem;
  border-width: 2px;
}

/* Typography: poster caps */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.02;
  color: var(--white);
  margin: 0;
}
.display--sun   { color: var(--sun); }
.display--white { color: var(--white); }
.display--ink   { color: var(--ink); }

.tag {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-pill);
  background: var(--sun);
  color: var(--teal-dark);
}
.tag--clay  { background: var(--clay-dark); color: var(--white); }
.tag--teal  { background: var(--teal-dark); color: var(--white); }
.tag--sea   { background: var(--sea); color: var(--teal-dark); }

/* Prose measure */
.prose { max-width: 38rem; }
.prose--wide { max-width: 44rem; }

/* Layout */
.wrap {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section--teal  { background: var(--sky-deep); }
.section--sea   { background: var(--sea); }
.section--cream { background: var(--cream); }
.section--ink   { background: var(--teal-dark); }

/* Buttons: flat poster blocks */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
  padding: 0.95rem 1.65rem;
  border: 3px solid var(--teal-dark);
  border-radius: var(--radius-ui);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn--sun { background: var(--sun); color: var(--teal-dark); }
.btn--sun:hover { background: var(--white); color: var(--teal-dark); }
.btn--clay { background: var(--clay-dark); color: var(--white); border-color: var(--teal-dark); }
.btn--clay:hover { background: var(--clay); color: var(--teal-dark); }
.btn--ghost { background: transparent; color: var(--white); border-color: var(--white); }
.btn--ghost:hover { background: var(--white); color: var(--teal-dark); }
.btn--ink-ghost { background: transparent; color: var(--teal-dark); border-color: var(--teal-dark); }
.btn--ink-ghost:hover { background: var(--teal-dark); color: var(--white); }

/* Hero KU & format bar */
.ku-note {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 1rem;
  font-size: 0.95rem;
  color: var(--white);
  font-weight: 500;
}
.ku-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--teal-dark);
  color: var(--sun);
  border: 2px solid var(--sun);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
}

/* Buckram Ledger / Evidence Card */
.ledger-card {
  background: var(--ledger-bg);
  border: 3px solid var(--teal-dark);
  padding: 1.75rem 1.65rem;
  color: var(--teal-dark);
  position: relative;
}
.ledger-card__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  border-bottom: 2px solid var(--teal-dark);
  padding-bottom: 0.75rem;
  margin-bottom: 1.1rem;
}
.ledger-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 1rem;
  color: var(--teal-dark);
  margin: 0;
}
.ledger-card__ref {
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.82rem;
  color: var(--clay-dark);
}
.ledger-card__mark {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
}
.ledger-asterisk {
  font-family: var(--font-accent);
  font-size: 2.8rem;
  line-height: 0.85;
  color: var(--clay-dark);
  font-weight: 700;
  padding-top: 0.15rem;
  user-select: none;
}
.ledger-card__body {
  font-family: var(--font-accent);
  font-size: 1.02rem;
  line-height: 1.62;
  margin: 0;
  color: var(--teal-dark);
}
.ledger-specs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 2px solid var(--teal-dark);
  font-size: 0.88rem;
}
.ledger-specs dt {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--ink-soft);
}
.ledger-specs dd {
  margin: 0.1rem 0 0;
  font-weight: 700;
  color: var(--teal-dark);
}

/* Card & Series Grid (Subgrid-aligned across all 3 columns) */
.series-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}
.card {
  background: var(--white);
  border: 3px solid var(--teal-dark);
  border-radius: var(--radius-block);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.card--featured {
  border-width: 3px;
  background: var(--cream);
}
.card__cover-link {
  display: block;
}
.card__body {
  padding: 1.4rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: nowrap;
}
.card__meta .tag {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  padding: 0.32rem 0.75rem;
  white-space: nowrap;
}
.card__status {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.55rem;
  border: 2px solid var(--teal-dark);
  background: var(--white);
  color: var(--teal-dark);
  white-space: nowrap;
}
.card__status--live {
  background: var(--sun);
  color: var(--teal-dark);
}
.card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.12;
  color: var(--teal-dark);
  margin: 0;
  font-size: 1.45rem;
}
.card__desc {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.58;
}
.card__excerpt {
  margin: 0;
  padding: 0.95rem 1rem;
  background: var(--ledger-bg);
  border-left: 4px solid var(--clay-dark);
  color: var(--teal-dark);
  font-family: var(--font-accent);
  font-size: 0.91rem;
  line-height: 1.52;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.card__excerpt-tag {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  color: var(--clay-dark);
  margin-bottom: 0.35rem;
}
.card__excerpt code {
  font-family: ui-monospace, "Cascadia Mono", "Consolas", monospace;
  font-size: 0.77rem;
  font-style: normal;
  font-weight: 700;
  background: var(--teal-dark);
  color: var(--sun);
  padding: 0.12rem 0.4rem;
  display: inline-block;
  margin-block: 0.2rem;
  align-self: flex-start;
}
.card__actions {
  margin-top: auto;
  padding-top: 0.5rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  align-items: stretch;
}
.card__actions .btn {
  width: 100%;
  padding: 0.68rem 0.45rem;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-align: center;
  white-space: nowrap;
}
.card__actions .btn--full {
  grid-column: 1 / -1;
}

@media (min-width: 960px) {
  .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: auto;
    gap: 1.5rem;
    align-items: stretch;
  }
  @supports (grid-template-rows: subgrid) {
    .series-grid {
      grid-template-rows: repeat(6, auto);
    }
    .card {
      display: grid;
      grid-row: span 6;
      grid-template-rows: subgrid;
      gap: 0;
    }
    .card__body {
      display: grid;
      grid-row: span 5;
      grid-template-rows: subgrid;
      padding: 1.35rem;
      gap: 0.75rem;
    }
    .card__actions {
      margin-top: 0;
      align-self: end;
    }
  }
}

/* Mobile Optimisations */
@media (max-width: 640px) {
  html, body { font-size: 16px; }
  .wrap { width: calc(100% - 1.75rem); }
  .topbar__inner { gap: 0.65rem; }
  .topbar__nav {
    width: 100%;
    justify-content: space-between;
    gap: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    padding-top: 0.55rem;
  }
  .topbar__link { font-size: 0.78rem; letter-spacing: 0.05em; }
  .topbar__nav .btn--sm { padding: 0.4rem 0.75rem; font-size: 0.75rem; }
  .hero-cover { justify-content: center; }
  .cover { max-width: 240px; }
  .ledger-card { padding: 1.25rem 1.15rem; }
  .ledger-specs { grid-template-columns: 1fr; gap: 0.6rem; }
  .chapter-end { padding: 1.35rem; }
}
.signup-consent {
  font-size: 0.85rem;
  margin: 0.85rem auto 0;
  max-width: 34rem;
  color: var(--teal-dark);
}
.signup-consent a {
  color: var(--teal-dark);
  text-decoration: underline;
  font-weight: 600;
}
.card__cover {
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 2560;
  object-fit: cover;
  border-bottom: 3px solid var(--teal-dark);
  background: var(--sea);
}

/* HERO: the poster scene IS the hero */
.poster {
  position: relative;
  background: var(--sky-deep) url("/img/poster-scene.svg") no-repeat center 30% / cover;
  color: var(--white);
  padding-block: clamp(3.5rem, 9vw, 6.5rem);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.75rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-cover {
  display: flex;
  justify-content: flex-start;
}
.cover {
  display: block;
  width: 100%;
  max-width: 310px;
  height: auto;
  border: 3px solid var(--teal-dark);
  border-radius: var(--radius-block);
  background: var(--white);
}
@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 3.5rem;
  }
  .hero-cover { justify-content: flex-end; }
}

/* Book section: ledger + prose split */
.book-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}
@media (min-width: 860px) {
  .book-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 3.25rem;
  }
}

/* Chapter sample page */
.chapter-prose { max-width: 42rem; }
.chapter-title { font-size: clamp(1.6rem, 4vw, 2.3rem); margin-block: 0 1.75rem; }
.chapter-prose p { margin-block: 0 1.15rem; }
.chapter-prose p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-size: 3.2rem;
  line-height: 1;
  float: left;
  padding-right: 0.5rem;
  color: var(--clay-dark);
}
.chapter-end {
  margin-top: 3rem;
  padding: 2rem;
  background: var(--white);
  border: 3px solid var(--teal-dark);
}

/* Newsletter flash message */
.signup-flash {
  margin-top: 1.25rem;
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--teal-dark);
}

/* FAQ Accordion (AEO + Buyer Objections) */
.faq-list {
  display: grid;
  gap: 0.9rem;
  max-width: 52rem;
}
.faq-item {
  background: var(--white);
  border: 3px solid var(--teal-dark);
  color: var(--teal-dark);
}
.faq-item summary {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-size: 1.08rem;
  padding: 1.1rem 1.35rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1;
  color: var(--clay-dark);
  flex-shrink: 0;
}
.faq-item[open] summary {
  background: var(--ledger-bg);
  border-bottom: 2px solid var(--teal-dark);
}
.faq-item[open] summary::after {
  content: "−";
}
.faq-item__body {
  padding: 1.15rem 1.35rem;
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.65;
}

/* Motion */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}