/* ════════════════════════════════════════════════════
   Книга — кросс-промо на book.alexlisovoy.ru
   Тёмный остров с фоновой фотографией (backlay.png),
   текст слева, книга в фоне справа.
   ════════════════════════════════════════════════════ */

.book-promo {
  position: relative;
  background: var(--bg-dark) url('assets/book/backlay.png') center right / cover no-repeat;
  color: var(--text-light);
  overflow: hidden;
  isolation: isolate;
  min-height: clamp(560px, 60vw, 760px);
  display: flex;
  align-items: center;
  padding: clamp(72px, 8vw, 112px) 0;
}

/* Subtle left-side gradient → guarantees text contrast over the photo */
.book-promo::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(
      90deg,
      rgba(20, 16, 12, 0.92) 0%,
      rgba(20, 16, 12, 0.82) 30%,
      rgba(20, 16, 12, 0.45) 55%,
      rgba(20, 16, 12, 0) 78%
    );
  pointer-events: none;
}

.book-promo__container {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  width: 100%;
}

.book-promo__content {
  max-width: 540px;
}

/* ── Eyebrow ──────────────────────────────────────── */
.book-promo__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font: 500 13px/1.3 var(--font-body);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 22px;
}
.book-promo__eyebrow::before,
.book-promo__eyebrow::after {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}

/* ── Title ────────────────────────────────────────── */
.book-promo__title {
  font: 500 clamp(30px, 3.4vw, 44px)/1.15 var(--font-serif);
  letter-spacing: -0.4px;
  color: var(--text-light);
  margin: 0 0 18px;
  text-wrap: pretty;
}
.book-promo__title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 500;
}

.book-promo__subtitle {
  font: italic 400 18px/1.5 var(--font-serif);
  color: rgba(245, 241, 236, 0.78);
  margin: 0 0 32px;
  text-wrap: pretty;
}

/* ── Stats strip ──────────────────────────────────── */
.book-promo__stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: clamp(20px, 2.5vw, 36px);
  padding: 22px 0;
  margin: 0 0 32px;
  border-top: 1px solid rgba(245, 241, 236, 0.14);
  border-bottom: 1px solid rgba(245, 241, 236, 0.14);
  list-style: none;
}
.book-promo__stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}
.book-promo__stat-num {
  font: 900 clamp(28px, 2.8vw, 36px)/1 var(--font-number);
  color: var(--accent);
  letter-spacing: -0.5px;
  flex-shrink: 0;
}
.book-promo__stat-label {
  font: 400 12px/1.3 var(--font-body);
  letter-spacing: 0.3px;
  color: rgba(245, 241, 236, 0.78);
  text-transform: none;
}

/* ── Description ──────────────────────────────────── */
.book-promo__desc {
  font: 400 clamp(15px, 1.1vw, 17px)/1.65 var(--font-body);
  color: rgba(245, 241, 236, 0.86);
  margin: 0 0 32px;
  max-width: 480px;
}

/* ── CTA ──────────────────────────────────────────── */
.book-promo__cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--accent);
  color: #fff;
  padding: 16px 28px;
  border-radius: var(--radius-sm);
  font: 500 15px/1 var(--font-body);
  letter-spacing: 0.3px;
  text-decoration: none;
  transition: background var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.book-promo__cta:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  text-decoration: none;
}
.book-promo__cta-arrow {
  display: inline-block;
  transition: transform var(--dur) var(--ease-out);
}
.book-promo__cta:hover .book-promo__cta-arrow {
  transform: translateX(4px);
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 1100px) {
  .book-promo {
    background-position: 70% center;
  }
}

@media (max-width: 860px) {
  .book-promo {
    min-height: 0;
    padding: 56px 0 64px;
    background-size: cover;
    background-position: center 78%;
  }
  /* On mobile the book sits behind/below the text — darken whole bg */
  .book-promo::before {
    background:
      linear-gradient(
        180deg,
        rgba(20, 16, 12, 0.92) 0%,
        rgba(20, 16, 12, 0.72) 40%,
        rgba(20, 16, 12, 0.55) 70%,
        rgba(20, 16, 12, 0.85) 100%
      );
  }
  .book-promo__content {
    max-width: 100%;
  }
}

@media (max-width: 520px) {
  .book-promo__stats {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .book-promo__cta {
    width: 100%;
    justify-content: center;
  }
}