/* Google Fonts Connect */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@1,400;1,600;1,700&family=Lora:ital,wght@0,400;0,500;1,400&display=swap');

:root {
  /* Тематичні CSS змінні відповідно до ТЗ */
  --bk-parchment: #F9F5EE;
  --bk-surface: #F0EAE0;
  --bk-ink: #1C1917;
  --bk-accent: #7B2D3E;
  --bk-accent-hover: #9B3D4E;
  --bk-muted: #6B5F52;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Lora', Georgia, serif;
  --bk-transition: all 0.3s ease;
}

/* Скидання базових стилів */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--bk-parchment);
  color: var(--bk-ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Типографіка: Всі заголовки h1-h4 обов'язково курсивом */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 600;
  color: var(--bk-ink);
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--bk-transition);
}

img {
  max-width: 100%;
  display: block;
}

/* Елементи структури (Пресет A) */
.bk-parchment-frame {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 768px) {
  .bk-parchment-frame {
    padding: 0 20px;
  }
}

/* HEADER STYLE */
.bk-library-navigation {
  background-color: var(--bk-parchment);
  border-bottom: 1px solid var(--bk-surface);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(28, 25, 23, 0.02);
}

.bk-nav-portal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 90px;
}

.bk-logo-sigil {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--bk-accent);
}

.bk-logo-sigil svg {
  fill: var(--bk-accent);
  width: 32px;
  height: 32px;
}

.bk-menu-scroll {
  display: flex;
  gap: 35px;
  align-items: center;
  list-style: none;
}

.bk-menu-item-link {
  font-size: 1.05rem;
  font-weight: 500;
  position: relative;
  padding: 5px 0;
}

.bk-menu-item-link:hover {
  color: var(--bk-accent);
}

.bk-menu-item-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--bk-accent);
  transition: var(--bk-transition);
}

.bk-menu-item-link:hover::after {
  width: 100%;
}

/* Мобільна навігація (Гамбургер без стороннього JS, через прихований checkbox) */
.bk-nav-toggle-input {
  display: none;
}

.bk-nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
}

.bk-nav-toggle-label span {
  display: block;
  width: 28px;
  height: 2px;
  background-color: var(--bk-ink);
  transition: var(--bk-transition);
}

@media (max-width: 768px) {
  .bk-nav-toggle-label {
    display: flex;
  }

  .bk-menu-scroll {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--bk-parchment);
    box-shadow: -5px 0 20px rgba(0,0,0,0.05);
    flex-direction: column;
    justify-content: center;
    gap: 40px;
    transition: var(--bk-transition);
  }

  .bk-nav-toggle-input:checked ~ .bk-menu-scroll {
    right: 0;
  }

  .bk-nav-toggle-input:checked ~ .bk-nav-toggle-label span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .bk-nav-toggle-input:checked ~ .bk-nav-toggle-label span:nth-child(2) {
    opacity: 0;
  }
  .bk-nav-toggle-input:checked ~ .bk-nav-toggle-label span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* HERO SECTION (Preset A) */
.bk-shelf-stage-hero {
  min-height: 90vh;
  background: linear-gradient(rgba(249,245,238,0.55), rgba(249,245,238,0.55)), url('img/bg.webp') no-repeat center center/cover;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 60px 20px;
  position: relative;
}

.bk-hero-title {
  font-size: 4rem;
  max-width: 900px;
  margin-bottom: 20px;
}

.bk-hero-subtitle {
  font-size: 1.5rem;
  font-style: italic;
  color: var(--bk-muted);
  max-width: 650px;
  margin-bottom: 40px;
}

@media (max-width: 768px) {
  .bk-hero-title { font-size: 2.5rem; }
  .bk-hero-subtitle { font-size: 1.2rem; }
}

/* Елегантні кнопки */
.bk-parchment-btn {
  display: inline-block;
  padding: 14px 32px;
  border: 1px solid var(--bk-accent);
  color: var(--bk-accent);
  font-weight: 500;
  letter-spacing: 1px;
  background: transparent;
  cursor: pointer;
  transition: var(--bk-transition);
}

.bk-parchment-btn:hover {
  background-color: var(--bk-accent);
  color: var(--bk-parchment);
}

/* Інформаційна смуга під Hero */
.bk-strip-metrics {
  background-color: var(--bk-surface);
  width: 100%;
  max-width: 1100px;
  margin: -40px auto 80px auto;
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(4, 100fr);
  padding: 30px;
  box-shadow: 0 10px 30px rgba(28,25,23,0.04);
  border-radius: 4px;
}

.bk-metric-cell {
  text-align: center;
  border-right: 1px solid rgba(107, 95, 82, 0.2);
}

.bk-metric-cell:last-child {
  border-right: none;
}

.bk-metric-num {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 2.5rem;
  color: var(--bk-accent);
  font-weight: 700;
  display: block;
}

.bk-metric-label {
  font-size: 0.9rem;
  color: var(--bk-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

@media (max-width: 768px) {
  .bk-strip-metrics {
    grid-template-columns: repeat(2, 100fr);
    gap: 20px;
    margin-top: 20px;
    margin-bottom: 40px;
  }
  .bk-metric-cell:nth-child(2) {
    border-right: none;
  }
}

/* CONTENT SECTION (Image Left, Text Right) */
.bk-editorial-split {
  display: flex;
  gap: 60px;
  align-items: center;
  padding: 60px 0;
}

.bk-split-image-wrapper {
  flex: 0 0 45%;
}

.bk-split-image-wrapper img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.06);
}

.bk-split-text-block {
  flex: 0 0 55%;
}

.bk-pull-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.65rem;
  color: var(--bk-accent);
  line-height: 1.4;
  margin-bottom: 25px;
  padding-left: 20px;
  border-left: 3px solid var(--bk-accent);
}

.bk-editorial-desc {
  font-size: 1.1rem;
  color: var(--bk-ink);
  margin-bottom: 20px;
}

@media (max-width: 992px) {
  .bk-editorial-split {
    flex-direction: column;
  }
  .bk-split-image-wrapper, .bk-split-text-block {
    flex: 0 0 100%;
  }
  .bk-split-image-wrapper img {
    height: 350px;
  }
}

/* FEATURES SECTION (Cards) */
.bk-reading-strip-features {
  padding: 80px 0;
}

.bk-section-heading {
  text-align: center;
  font-size: 2.8rem;
  margin-bottom: 50px;
}

.bk-chapter-grid {
  display: grid;
  grid-template-columns: repeat(3, 100fr);
  gap: 30px;
}

.bk-folio-card {
  background-color: var(--bk-surface);
  padding: 40px 30px;
  border-top: 3px solid var(--bk-accent);
  transition: var(--bk-transition);
  border-radius: 0 0 4px 4px;
}

.bk-folio-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(28,25,23,0.05);
}

.bk-card-icon {
  margin-bottom: 20px;
}

.bk-card-icon svg {
  width: 40px;
  height: 40px;
  fill: var(--bk-accent);
}

.bk-card-title {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.bk-card-text {
  font-size: 1rem;
  color: var(--bk-muted);
}

@media (max-width: 992px) {
  .bk-chapter-grid {
    grid-template-columns: 100fr;
  }
}

/* КАТЕГОРІЇ / РУБРИКИ (Drop-caps) */
.bk-rubrics-showcase {
  padding: 80px 0;
}

.bk-rubric-columns {
  display: grid;
  grid-template-columns: repeat(3, 100fr);
  gap: 40px;
}

.bk-rubric-box {
  position: relative;
  padding-top: 20px;
}

.bk-drop-cap {
  font-family: var(--font-display);
  font-size: 4rem;
  font-style: italic;
  color: var(--bk-accent);
  opacity: 0.25;
  position: absolute;
  top: -20px;
  left: 0;
  line-height: 1;
}

.bk-rubric-title {
  font-size: 1.6rem;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
  padding-left: 10px;
}

.bk-rubric-body {
  font-size: 1rem;
  color: var(--bk-muted);
  padding-left: 10px;
}

/* CTA STRIP */
.bk-cta-strip-banner {
  background-color: var(--bk-surface);
  padding: 80px 20px;
  text-align: center;
  margin: 60px 0;
}

.bk-cta-title {
  font-size: 2.8rem;
  margin-bottom: 30px;
}

/* EXPERT PAGE SPECIFIC */
.bk-expert-hero {
  min-height: 40vh;
  background-color: var(--bk-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

/* RESERVE PAGE / FORM SPECIFIC */
.bk-reserve-container {
  max-width: 640px;
  margin: 60px auto;
  background-color: var(--bk-surface);
  padding: 50px 40px;
  border-radius: 4px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.03);
}

.bk-form-group {
  margin-bottom: 25px;
}

.bk-form-label {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 8px;
  font-weight: 500;
}

.bk-form-input {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid rgba(107, 95, 82, 0.3);
  background-color: var(--bk-parchment);
  font-family: var(--font-body);
  color: var(--bk-ink);
  font-size: 1rem;
  transition: var(--bk-transition);
  border-radius: 2px;
}

.bk-form-input:focus {
  outline: none;
  border-color: var(--bk-accent);
}

.bk-form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--bk-muted);
  cursor: pointer;
}

.bk-form-checkbox-label input {
  margin-top: 4px;
}

.bk-form-disclaimer {
  font-size: 0.85rem;
  color: var(--bk-muted);
  margin-top: 20px;
  text-align: center;
  line-height: 1.4;
}

/* LEGAL PAGES TEXT STYLING */
.bk-legal-document {
  max-width: 800px;
  margin: 60px auto;
  padding: 0 20px;
  min-height: 70vh;
}

.bk-legal-document h1 {
  font-size: 3rem;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--bk-surface);
  padding-bottom: 15px;
}

.bk-legal-document h2 {
  font-size: 1.8rem;
  margin: 30px 0 15px 0;
}

.bk-legal-document p {
  margin-bottom: 20px;
  color: var(--bk-muted);
  text-align: justify;
}

/* FOOTER STYLING */
.bk-monument-footer {
  background-color: var(--bk-surface);
  border-top: 1px solid rgba(107, 95, 82, 0.15);
  padding: 60px 0 30px 0;
  margin-top: 100px;
}

.bk-footer-matrix {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  text-align: center;
}

.bk-footer-links {
  display: flex;
  gap: 30px;
  list-style: none;
}

.bk-footer-link-item {
  font-size: 0.95rem;
  color: var(--bk-muted);
}

.bk-footer-link-item:hover {
  color: var(--bk-accent);
}

.bk-editorial-disclaimer {
  font-size: 0.85rem;
  color: var(--bk-muted);
  max-width: 600px;
  border-top: 1px solid rgba(107, 95, 82, 0.1);
  padding-top: 20px;
}

.bk-copyright-notice {
  font-size: 0.85rem;
  color: var(--bk-muted);
}

/* COOKIE BANNER */
.bk-cookie-intercept {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--bk-surface);
  box-shadow: 0 -10px 30px rgba(0,0,0,0.05);
  padding: 20px 0;
  z-index: 9999;
  border-top: 2px solid var(--bk-accent);
  display: none;
}

.bk-cookie-alignment {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.bk-cookie-text {
  font-size: 0.95rem;
  color: var(--bk-ink);
}

.bk-cookie-actions {
  display: flex;
  gap: 15px;
  flex-shrink: 0;
}

.bk-cookie-btn-accept {
  background-color: var(--bk-accent);
  color: var(--bk-parchment);
  border: 1px solid var(--bk-accent);
  padding: 8px 20px;
  cursor: pointer;
  font-family: var(--font-body);
  transition: var(--bk-transition);
}

.bk-cookie-btn-accept:hover {
  background-color: var(--bk-accent-hover);
}

.bk-cookie-btn-decline {
  background-color: transparent;
  color: var(--bk-muted);
  border: 1px solid var(--bk-muted);
  padding: 8px 20px;
  cursor: pointer;
  font-family: var(--font-body);
  transition: var(--bk-transition);
}

.bk-cookie-btn-decline:hover {
  background-color: rgba(107, 95, 82, 0.1);
}

@media (max-width: 768px) {
  .bk-cookie-alignment {
    flex-direction: column;
    text-align: center;
  }
}