/* =========================================
   BOOKS PAGE — bk- namespace
   ========================================= */

/* --- Nav --- */
.bk-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px clamp(24px, 5vw, 48px);
  background: linear-gradient(180deg, rgba(11,10,15,0.92) 0%, transparent 100%);
}

.bk-nav__inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bk-nav__brand {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  color: #F0EDE6;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.bk-nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.bk-nav__link {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 400;
  color: #8A8A9A;
  text-decoration: none;
  transition: color 0.2s ease;
}

.bk-nav__link:hover { color: #F0EDE6; }

.bk-nav__link--active {
  color: #C9853A;
  border-bottom: 1px solid rgba(201,133,58,0.5);
  padding-bottom: 1px;
}

.bk-nav__cta {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #C9853A;
  text-decoration: none;
  border: 1px solid rgba(201,133,58,0.4);
  padding: 7px 16px;
  border-radius: 2px;
  transition: all 0.2s ease;
}

.bk-nav__cta:hover {
  background: rgba(201,133,58,0.1);
  border-color: #C9853A;
}

@media (max-width: 680px) {
  .bk-nav__links { gap: 16px; }
  .bk-nav__link { display: none; }
  .bk-nav__cta { display: inline-block; }
}

/* --- Hero --- */
.bk-hero {
  background: #0B0A0F;
  min-height: 40vh;
  display: flex;
  align-items: center;
  padding: clamp(100px, 14vh, 140px) clamp(24px, 5vw, 64px) clamp(60px, 8vh, 80px);
  text-align: center;
}

.bk-hero__inner {
  max-width: 700px;
  margin: 0 auto;
}

.bk-hero__eyebrow {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #C9853A;
  border: 1px solid rgba(201,133,58,0.3);
  display: inline-block;
  padding: 6px 14px;
  border-radius: 2px;
  margin-bottom: 28px;
}

.bk-hero__headline {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  color: #F0EDE6;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.bk-hero__sub {
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 300;
  color: #8A8A9A;
  letter-spacing: 0.02em;
}

/* --- Books section --- */
.bk-books {
  background: #0B0A0F;
  padding: clamp(48px, 8vw, 80px) 0 clamp(80px, 10vw, 120px);
}

.bk-books__inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 48px);
}

.bk-books__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

@media (max-width: 680px) {
  .bk-books__grid { grid-template-columns: 1fr; }
}

/* --- Book card --- */
.bk-book {
  background: #11121A;
  border: 1px solid rgba(201,133,58,0.3);
  border-radius: 4px;
  padding: clamp(32px, 4vw, 48px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.bk-book__cover {
  aspect-ratio: 2 / 3;
  width: 100%;
  max-width: 200px;
  object-fit: cover;
  box-shadow: 0 8px 40px rgba(0,0,0,0.6);
  border-radius: 2px;
  margin-bottom: 4px;
}

.bk-book__cover--placeholder {
  background: linear-gradient(160deg, #1A1830 0%, #0B0A0F 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(201,133,58,0.2);
}

.bk-book__cover-text {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  color: #C9853A;
  letter-spacing: -0.01em;
  text-align: center;
  line-height: 1.2;
  padding: 16px;
}

.bk-book__badge {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #C9853A;
  border: 1px solid rgba(201,133,58,0.3);
  display: inline-block;
  padding: 5px 10px;
  border-radius: 2px;
  align-self: flex-start;
}

.bk-book__title {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.0;
  color: #F0EDE6;
  letter-spacing: -0.02em;
  margin: 0;
}

.bk-book__subtitle {
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 300;
  color: #8A8A9A;
  line-height: 1.5;
  margin: 0;
}

.bk-book__subtitle-small {
  font-size: 13px;
  opacity: 0.8;
}

.bk-book__copy {
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(14px, 1.6vw, 16px);
  font-weight: 300;
  color: #8A8A9A;
  line-height: 1.8;
  max-width: 480px;
  margin: 4px 0;
  flex: 1;
}

.bk-book__price {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 17px;
  font-weight: 400;
  color: #C9853A;
  letter-spacing: 0.01em;
}

.bk-book__page-link {
  display: inline-block;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: #C9853A;
  text-decoration: none;
  letter-spacing: 0.04em;
  margin-top: 4px;
  margin-bottom: 4px;
  transition: color 0.2s ease;
}

.bk-book__page-link:hover {
  color: #D4953F;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.bk-book__ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 4px;
}

/* --- CTA buttons --- */
.bk-cta {
  display: inline-block;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 500;
  padding: 12px 22px;
  border-radius: 3px;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: all 0.2s ease;
  cursor: pointer;
}

.bk-cta--primary {
  background: #C9853A;
  color: #0B0A0F;
  border: 1px solid #C9853A;
}

.bk-cta--primary:hover {
  background: #D4953F;
  border-color: #D4953F;
  transform: translateY(-2px);
}

.bk-cta--secondary {
  background: transparent;
  color: #C9853A;
  border: 1px solid rgba(201,133,58,0.5);
}

.bk-cta--secondary:hover {
  background: rgba(201,133,58,0.08);
  border-color: #C9853A;
  transform: translateY(-2px);
}

/* --- Author bio --- */
.bk-author {
  background: #0B0A0F;
  border-top: 1px solid rgba(240,237,230,0.06);
  padding: clamp(64px, 8vw, 96px) clamp(24px, 5vw, 48px);
}

.bk-author__inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.bk-author__label {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #C9853A;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.bk-label-line {
  display: inline-block;
  width: 32px;
  height: 1px;
  background: #C9853A;
  margin-right: 12px;
  opacity: 0.7;
}

.bk-author__bio {
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(16px, 2vw, 18px);
  font-weight: 300;
  color: #8A8A9A;
  line-height: 1.9;
  margin: 0;
}

/* --- Footer --- */
.bk-footer {
  background: #0B0A0F;
  border-top: 1px solid rgba(240,237,230,0.06);
  padding: clamp(48px, 7vw, 80px) 0 clamp(32px, 4vw, 48px);
}

.bk-footer__inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 48px);
}

.bk-footer__top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  padding-bottom: clamp(32px, 4vw, 48px);
  border-bottom: 1px solid rgba(240,237,230,0.06);
  margin-bottom: 24px;
}

@media (max-width: 600px) {
  .bk-footer__top { grid-template-columns: 1fr; gap: 32px; }
}

.bk-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bk-footer__name {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 22px;
  font-weight: 700;
  color: #F0EDE6;
  letter-spacing: -0.01em;
}

.bk-footer__motto {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 300;
  color: #5A5A6A;
  line-height: 1.6;
  margin: 0;
}

.bk-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

@media (max-width: 480px) {
  .bk-footer__nav { grid-template-columns: repeat(2, 1fr); }
}

.bk-footer__col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bk-footer__col-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #5A5A6A;
  margin-bottom: 4px;
}

.bk-footer__link {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 300;
  color: #8A8A9A;
  text-decoration: none;
  transition: color 0.2s ease;
}

.bk-footer__link:hover { color: #F0EDE6; }

.bk-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.bk-footer__copy {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  color: #5A5A6A;
  letter-spacing: 0.03em;
}

.bk-footer__legal {
  display: flex;
  gap: 16px;
}

.bk-footer__legal-link {
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  color: #5A5A6A;
  text-decoration: none;
  transition: color 0.2s ease;
}

.bk-footer__legal-link:hover { color: #8A8A9A; }