/* Inner Pursuit of Happiness — Books page design preview.
   Uses the --u unit (one mockup pixel) and shared header/footer from styles.css.
   Geometry follows the approved 682px-wide Books mockup; content spans the same
   wide boundary as the About page's upper sections. */

:root {
  --bk-w: min(calc(100vw - 48px), calc(790 * var(--u)));
  --bk-edge: max(24px, calc((100vw - var(--bk-w)) / 2));
}

h3 {
  margin: 0;
}

.bk-wrap {
  width: var(--bk-w);
  margin-inline: auto;
}

/* —— Top: books photo with title (left), David's story (right) —— */
.bk-top {
  display: grid;
  grid-template-columns: 51% 1fr;
  background: #f7f0e4;
  border-bottom: 1px solid var(--line);
}

.bk-hero {
  position: relative;
  overflow: hidden;
  background: #5a3b1c;
}

.bk-hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 40% 55%;
}

.bk-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(24, 14, 4, 0.72) 0%, rgba(24, 14, 4, 0.5) 45%, rgba(24, 14, 4, 0.05) 80%);
}

.bk-hero-copy {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: calc(var(--bk-edge) + 250 * var(--u));
  padding: calc(14 * var(--u)) calc(16 * var(--u)) calc(14 * var(--u)) var(--bk-edge);
  color: #fff;
}

.bk-hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: calc(30 * var(--u));
  line-height: 1;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.bk-hero-tag {
  margin-top: calc(4 * var(--u));
  font-family: var(--serif);
  font-style: italic;
  font-weight: 600;
  font-size: calc(15 * var(--u));
  line-height: 1.15;
  color: #f0c978;
}

.bk-hero-lede {
  margin-top: calc(8 * var(--u));
  font-family: var(--serif);
  font-weight: 600;
  font-size: max(16px, calc(9.6 * var(--u)));
  line-height: 1.4;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
}

.bk-story {
  display: grid;
  grid-template-columns: 1fr calc(100 * var(--u));
  gap: calc(14 * var(--u));
  padding: calc(10 * var(--u)) var(--bk-edge) calc(10 * var(--u)) calc(18 * var(--u));
}

.bk-kicker {
  display: flex;
  align-items: center;
  gap: calc(6 * var(--u));
  font-family: var(--sans);
  font-weight: 600;
  font-size: max(11px, calc(6.4 * var(--u)));
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-text);
}

.bk-kicker::before {
  content: "";
  width: calc(14 * var(--u));
  height: 1px;
  background: var(--gold);
}

.bk-story h2 {
  margin-top: calc(4 * var(--u));
  font-family: var(--serif);
  font-weight: 600;
  font-size: calc(15.5 * var(--u));
  line-height: 1.1;
  color: var(--navy);
}

.bk-story-copy > p:not(.bk-kicker) {
  margin-top: calc(6 * var(--u));
  font-family: var(--serif);
  font-weight: 500;
  font-size: max(16px, calc(9.4 * var(--u)));
  line-height: 1.42;
  color: var(--ink);
}

.bk-story-btn {
  margin-top: calc(9 * var(--u));
  height: calc(21 * var(--u));
  padding: 0 calc(13 * var(--u));
  gap: 0.4em;
  font-size: max(13px, calc(7.4 * var(--u)));
  font-weight: 500;
}

.bk-story-img {
  width: 100%;
  height: 0;
  min-height: 100%;
  object-position: 50% 45%;
}

/* —— Shared section heading with gold rules —— */
.bk-rule-heading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: calc(14 * var(--u));
  font-family: var(--serif);
  font-weight: 600;
  font-size: calc(17 * var(--u));
  line-height: 1.1;
  color: var(--navy);
}

.bk-rule-heading::before,
.bk-rule-heading::after {
  content: "";
  width: calc(50 * var(--u));
  height: 1px;
  background: var(--gold);
}

.bk-section-lede {
  margin-top: calc(4 * var(--u));
  text-align: center;
  font-family: var(--serif);
  font-weight: 500;
  font-size: max(16px, calc(9.4 * var(--u)));
  line-height: 1.4;
  color: var(--ink);
}

.bk-section-lede strong {
  font-weight: 700;
  color: var(--navy);
}

/* —— Explore the Books: 3 x 2 —— */
.bk-explore {
  background: var(--ivory);
  padding: calc(11 * var(--u)) 0 calc(12 * var(--u));
}

.bk-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(14 * var(--u)) calc(20 * var(--u));
  margin-top: calc(10 * var(--u));
}

.bk-book {
  display: grid;
  grid-template-columns: calc(84 * var(--u)) 1fr;
  grid-template-rows: 1fr auto;
  column-gap: calc(10 * var(--u));
  row-gap: calc(7 * var(--u));
}

.bk-cover {
  display: block;
  align-self: start;
}

.bk-cover img {
  width: 100%;
  height: auto;
  border-radius: 2px;
  box-shadow: 0 calc(3 * var(--u)) calc(8 * var(--u)) rgba(30, 22, 8, 0.28);
}

.bk-cover-crop img {
  aspect-ratio: 2 / 3;
  object-fit: cover;
  object-position: 100% 50%;
}

.bk-info h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: calc(11 * var(--u));
  line-height: 1.18;
  color: var(--navy);
}

.bk-info h3 a {
  text-decoration: none;
}

.bk-info h3 a:hover {
  text-decoration: underline;
}

.bk-info p {
  margin-top: calc(5 * var(--u));
  font-family: var(--serif);
  font-weight: 500;
  font-size: max(15px, calc(9 * var(--u)));
  line-height: 1.38;
  color: var(--ink);
}

.bk-info .bk-soon {
  font-family: var(--sans);
  font-weight: 600;
  font-size: max(11px, calc(6.4 * var(--u)));
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-text);
}

.bk-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: calc(5 * var(--u));
}

.bk-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  height: calc(20 * var(--u));
  padding: 0 calc(9 * var(--u));
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
  font-family: var(--sans);
  font-weight: 600;
  font-size: max(12px, calc(6.8 * var(--u)));
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 calc(2 * var(--u)) calc(5 * var(--u)) rgba(19, 34, 59, 0.2);
  transition: filter 0.2s ease;
}

.bk-btn-gold {
  background: linear-gradient(180deg, var(--gold-btn-top), var(--gold-btn-bottom));
}

.bk-btn:hover {
  filter: brightness(1.12);
}

.bk-btn svg {
  width: 1.15em;
  height: 1.15em;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* —— National Hotlines —— */
.bk-hotlines {
  background: #f8f2e8;
  border-top: 1px solid var(--line);
  padding: calc(11 * var(--u)) 0 calc(12 * var(--u));
}

.bk-hotline-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: calc(7 * var(--u));
  margin-top: calc(10 * var(--u));
}

.bk-hotline {
  display: grid;
  grid-template-columns: calc(60 * var(--u)) 1fr;
  align-items: center;
  gap: calc(10 * var(--u));
  min-width: 0;
  padding: calc(7 * var(--u)) calc(10 * var(--u));
  background: #fdf9f2;
  border: 1px solid #eadfc9;
  border-radius: calc(5 * var(--u));
}

.bk-hotline-wide {
  grid-column: 1 / -1;
}

.bk-hotline img {
  width: 100%;
  height: calc(40 * var(--u));
  object-fit: contain;
}

.bk-hotline h3 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: calc(9.8 * var(--u));
  line-height: 1.2;
  color: var(--navy);
}

.bk-hotline p {
  margin-top: calc(2 * var(--u));
  font-family: var(--sans);
  font-size: max(13.5px, calc(7.6 * var(--u)));
  line-height: 1.4;
  color: #34405a;
}

.bk-hotline a {
  font-weight: 600;
  color: var(--gold-text);
  text-underline-offset: 2px;
}

/* —— Tablet and phone —— */
@media (max-width: 960px) {
  :root {
    --bk-w: calc(100vw - 2.5rem);
    --bk-edge: 1.25rem;
  }

  .bk-top {
    grid-template-columns: 1fr;
  }

  .bk-hero-copy {
    max-width: none;
    min-height: 260px;
    padding: 2rem 1.25rem;
  }

  .bk-hero h1 {
    font-size: 2.8rem;
  }

  .bk-hero-tag {
    font-size: 1.5rem;
  }

  .bk-hero-lede {
    font-size: 1.1rem;
  }

  .bk-story {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 1.5rem 1.25rem;
  }

  .bk-story h2,
  .bk-rule-heading {
    font-size: 1.9rem;
  }

  .bk-story-btn {
    height: auto;
    min-height: 44px;
    padding: 0 1.4rem;
  }

  .bk-story-img {
    height: auto;
    min-height: 0;
    aspect-ratio: 16 / 10;
    max-height: 240px;
    border-radius: 8px;
  }

  .bk-rule-heading::before,
  .bk-rule-heading::after {
    width: 2rem;
  }

  .bk-explore,
  .bk-hotlines {
    padding: 1.75rem 0;
  }

  .bk-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    margin-top: 1.25rem;
  }

  .bk-book {
    grid-template-columns: 110px 1fr;
    column-gap: 1rem;
    row-gap: 0.75rem;
  }

  .bk-info h3 {
    font-size: 1.3rem;
  }

  .bk-btn {
    height: 40px;
    padding: 0 0.9rem;
    font-size: 0.85rem;
  }

  .bk-hotline-grid {
    grid-template-columns: 1fr;
    gap: 0.6rem;
    margin-top: 1.25rem;
  }

  .bk-hotline {
    grid-template-columns: 72px 1fr;
    gap: 0.9rem;
    padding: 0.75rem 0.9rem;
    border-radius: 8px;
  }

  .bk-hotline img {
    height: 52px;
  }

  .bk-hotline h3 {
    font-size: 1.1rem;
  }
}

@media (min-width: 641px) and (max-width: 960px) {
  .bk-grid,
  .bk-hotline-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bk-btn {
    transition: none;
  }
}