/* ==========================================================================
   Carmel Publications - design system
   Palette: Electric Blue #3155E7 / Tangerine #FF8A3D / Lime #D7F45B / Lavender #C8B7FF
   Surfaces: Warm white #FAF9F6, Midnight navy #11162B
   ========================================================================== */

:root {
  --font-display: 'Outfit', 'Noto Sans Devanagari', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', 'Noto Sans Devanagari', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --color-primary: #3155E7;
  --color-primary-hover: #2143cc;
  --color-primary-light: #eef2ff;

  --color-secondary: #FF8A3D;
  --color-secondary-hover: #e5752c;
  --color-secondary-light: #fff1e6;
  --color-secondary-text: #B9440B;

  --color-accent: #D7F45B;
  --color-highlight: #C8B7FF;

  --color-navy: #11162B;
  --color-navy-card: #18203d;
  --color-navy-border: #263158;

  --color-bg: #FAF9F6;
  --color-bg-alt: #F4F3EE;
  --color-surface: #FFFFFF;

  --color-text-main: #171923;
  --color-text-muted: #545B6E;
  --color-text-light: #6B7385;
  --color-border: #E3E5EA;
  --color-border-subtle: #EEF0F3;
  --color-danger: #C62828;

  --shadow-sm: 0 1px 3px rgba(17, 22, 43, 0.06);
  --shadow-md: 0 4px 14px rgba(17, 22, 43, 0.08);
  --shadow-lg: 0 14px 32px -6px rgba(17, 22, 43, 0.12);
  --shadow-book: 0 16px 34px -6px rgba(17, 22, 43, 0.28), 0 4px 10px rgba(17, 22, 43, 0.1);

  --max-width: 1320px;
  --header-h: 124px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 9999px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 0.2s var(--ease);
  --t-normal: 0.35s var(--ease);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body.no-scroll { overflow: hidden; }

section[id] { scroll-margin-top: calc(var(--header-h) + 8px); }
#catalogue { scroll-margin-top: calc(var(--header-h) - 24px); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.2;
}

p { color: var(--color-text-muted); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
input, select, textarea { font: inherit; font-size: 0.95rem; color: inherit; }
address { font-style: normal; }
kbd { font-family: inherit; }
[hidden] { display: none !important; }

:focus-visible {
  outline: 3px solid rgba(49, 85, 231, 0.55);
  outline-offset: 2px;
  border-radius: 6px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 5000;
  background: var(--color-navy);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transform: translateY(-200%);
  transition: transform var(--t-fast);
}
.skip-link:focus { transform: none; }

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), #7928CA, var(--color-secondary));
  transform: scaleX(0);
  transform-origin: left;
  z-index: 1100;
  pointer-events: none;
}

.noscript-note {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem;
  background: var(--color-navy);
  color: #fff;
  text-align: center;
  z-index: 3000;
}

/* ---------- Badges & buttons ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-pill);
  line-height: 1.3;
}
.badge-primary { background: var(--color-primary-light); color: var(--color-primary); }
.badge-secondary { background: var(--color-secondary-light); color: var(--color-secondary-text); }
.badge-accent { background: var(--color-accent); color: #26380a; }
.badge-navy { background: rgba(255, 255, 255, 0.12); color: #fff; border: 1px solid rgba(255, 255, 255, 0.22); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: transform var(--t-normal), background var(--t-normal), box-shadow var(--t-normal), border-color var(--t-fast), color var(--t-fast);
  white-space: nowrap;
  line-height: 1.3;
}
.btn:active { transform: scale(0.98); }
.btn[disabled] { opacity: 0.55; cursor: default; pointer-events: none; }
.btn-block { width: 100%; }
.btn-sm { padding: 0.55rem 1.05rem; font-size: 0.85rem; }

.btn-primary { background: var(--color-primary); color: #fff; box-shadow: 0 4px 16px rgba(49, 85, 231, 0.3); }
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: 0 8px 24px rgba(49, 85, 231, 0.38); transform: translateY(-2px); }
.btn-secondary { background: var(--color-secondary); color: #1a1100; box-shadow: 0 4px 16px rgba(255, 138, 61, 0.3); }
.btn-secondary:hover { background: var(--color-secondary-hover); transform: translateY(-2px); }
.btn-outline { background: var(--color-surface); color: var(--color-text-main); border: 1.5px solid var(--color-border); }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); transform: translateY(-2px); }
.btn-outline-white { color: #fff; border: 1.5px solid rgba(255, 255, 255, 0.4); }
.btn-outline-white:hover { background: rgba(255, 255, 255, 0.14); border-color: #fff; }

.btn-icon {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all var(--t-fast);
  flex-shrink: 0;
}
.btn-icon:hover { background: var(--color-primary-light); color: var(--color-primary); border-color: var(--color-primary); }

.btn-text-danger {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-danger);
  padding: 0.4rem;
  text-align: center;
}
.btn-text-danger:hover { text-decoration: underline; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(250, 249, 246, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: background var(--t-normal), box-shadow var(--t-normal);
}
.site-header.scrolled { background: rgba(255, 255, 255, 0.96); box-shadow: 0 4px 20px rgba(17, 22, 43, 0.06); }

.header-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 100%;
}

.brand-logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 0.25rem 0.75rem;
  background: #fff;
  border: 1px solid rgba(37, 56, 150, 0.14);
  border-radius: var(--radius-md);
  box-shadow: 0 6px 18px rgba(30, 40, 120, 0.12), 0 0 0 3px rgba(245, 190, 30, 0.18);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.brand-logo-link:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(30, 40, 120, 0.18), 0 0 0 3px rgba(245, 190, 30, 0.32); }
.brand-logo-img { height: 96px; width: auto; object-fit: contain; }

.desktop-nav { flex: 1; min-width: 0; }
.nav-links { display: flex; align-items: center; gap: 0.25rem; }
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.8rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: color var(--t-fast), background var(--t-fast);
}
.nav-link:hover { color: var(--color-primary); background: var(--color-primary-light); }
.nav-link.active { color: var(--color-primary); background: var(--color-primary-light); }

.header-actions { display: flex; align-items: center; gap: 0.7rem; flex-shrink: 0; margin-left: auto; }

.search-trigger-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  height: 44px;
  padding: 0 0.9rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--t-fast);
}
.search-trigger-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.kbd-shortcut {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.12rem 0.4rem;
  border-radius: 6px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.saved-count-pill {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border-radius: var(--radius-pill);
  background: var(--color-danger);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
}

.mobile-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

/* Mobile navigation */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2100;
  background: rgba(10, 14, 29, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-normal), visibility var(--t-normal);
}
.mobile-nav-backdrop.active { opacity: 1; visibility: visible; }
.mobile-nav-panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 88vw);
  background: var(--color-bg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transform: translateX(100%);
  transition: transform var(--t-normal);
}
.mobile-nav-backdrop.active .mobile-nav-panel { transform: none; }
.mobile-nav-head { display: flex; align-items: center; justify-content: space-between; }
.mobile-nav-head .brand-logo-img { height: 72px; }
.mobile-nav-links { display: flex; flex-direction: column; margin-top: 0.5rem; }
.mobile-nav-links a {
  display: block;
  padding: 0.95rem 0.25rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border-subtle);
}
.mobile-nav-links a:hover { color: var(--color-primary); }
.mobile-nav-actions { margin-top: auto; display: grid; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 4.5rem 0 4.5rem;
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 18%, rgba(200, 183, 255, 0.28), transparent 42%),
    radial-gradient(circle at 92% 82%, rgba(215, 244, 91, 0.3), transparent 38%),
    radial-gradient(circle at 50% 50%, rgba(49, 85, 231, 0.06), transparent 60%),
    var(--color-bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  align-items: center;
  gap: 3rem;
}

.hero-content { max-width: 620px; }

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1rem;
  background: #fff;
  border: 1px solid rgba(49, 85, 231, 0.18);
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(49, 85, 231, 0.08);
  margin-bottom: 1.5rem;
}
.hero-pill-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-secondary);
  animation: pulse-dot 2s infinite ease-in-out;
}
@keyframes pulse-dot { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.4); opacity: 0.6; } }

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.7rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.08;
  color: var(--color-navy);
  margin-bottom: 1.4rem;
}
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, #7928CA 60%, #D9480F 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description { font-size: 1.12rem; line-height: 1.65; margin-bottom: 2rem; max-width: 560px; }

.hero-cta-group { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.75rem; }

.hero-stats-strip {
  display: grid;
  grid-template-columns: repeat(4, auto);
  justify-content: start;
  gap: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(0, 0, 0, 0.09);
}
.stat-item { display: flex; flex-direction: column-reverse; gap: 0.3rem; }
.stat-number { font-family: var(--font-display); font-size: 1.55rem; font-weight: 800; color: var(--color-navy); line-height: 1.1; }
.stat-label { font-size: 0.74rem; font-weight: 600; color: var(--color-text-light); text-transform: uppercase; letter-spacing: 0.05em; }

/* Floating book showcase */
.hero-visual { min-width: 0; display: flex; justify-content: center; --hs: 1; height: calc(450px * var(--hs)); }
.hero-book-showcase {
  position: relative;
  flex: none;
  width: 460px;
  height: 450px;
  transform: scale(var(--hs));
  transform-origin: top center;
}

.floating-card {
  position: absolute;
  padding: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-book);
  background: #fff;
  transition: transform 0.5s var(--ease-bounce), box-shadow var(--t-normal), translate 0.4s var(--ease-bounce);
  translate: calc(var(--mx, 0) * var(--depth, 8) * 1px) calc(var(--my, 0) * var(--depth, 8) * 1px);
}
.floating-card img { width: 100%; height: 100%; object-fit: cover; }
.floating-card::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 12px;
  background: linear-gradient(to right, rgba(0, 0, 0, 0.32), transparent);
  z-index: 2;
  pointer-events: none;
}
.floating-card:hover, .floating-card:focus-visible { z-index: 10 !important; box-shadow: 0 28px 50px -10px rgba(49, 85, 231, 0.4); }

.card-primary { width: 235px; height: 310px; left: 50%; margin-left: -117px; top: 0; transform: rotate(-4deg); z-index: 4; --depth: 14; }
.card-left { width: 185px; height: 245px; left: 0; top: 70px; transform: rotate(-13deg); z-index: 2; --depth: 8; }
.card-right { width: 195px; height: 257px; right: 0; top: 50px; transform: rotate(11deg); z-index: 3; --depth: 10; }
.card-back { width: 250px; height: 200px; right: 8px; bottom: 28px; transform: rotate(-3deg); z-index: 5; --depth: 18; }
.card-primary:hover { transform: rotate(0) scale(1.06); }
.card-left:hover { transform: rotate(-6deg) translateY(-8px) scale(1.06); }
.card-right:hover { transform: rotate(5deg) translateY(-8px) scale(1.06); }
.card-back:hover { transform: rotate(0) translateY(-8px) scale(1.06); }

.hero-curated-tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1.1rem;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(0, 0, 0, 0.07);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}
.hero-curated-tag .icon-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #26380a;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tag-title { font-size: 0.85rem; font-weight: 700; color: var(--color-navy); line-height: 1.3; }
.tag-sub { font-size: 0.74rem; color: var(--color-text-muted); }

/* ==========================================================================
   Section headers
   ========================================================================== */
.section-header { margin-bottom: 2.75rem; }
.section-header.text-center { text-align: center; max-width: 700px; margin-left: auto; margin-right: auto; }
.section-badge { margin-bottom: 0.85rem; }
.section-title { font-size: clamp(1.9rem, 3.6vw, 2.5rem); font-weight: 800; letter-spacing: -0.025em; color: var(--color-navy); margin-bottom: 0.8rem; }
.section-subtitle { font-size: 1.05rem; }

/* ==========================================================================
   Book Finder
   ========================================================================== */
.finder-section { padding: 0 0 5rem; margin-top: -1.5rem; position: relative; z-index: 2; }

.finder-card {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 100% 0, rgba(215, 244, 91, 0.35), transparent 40%),
    radial-gradient(circle at 0 100%, rgba(200, 183, 255, 0.3), transparent 40%),
    #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 2.75rem;
}
.finder-intro { max-width: 680px; margin-bottom: 2rem; }
.finder-intro .badge { margin-bottom: 0.9rem; }
.finder-intro .section-title { margin-bottom: 0.6rem; }

.finder-steps { display: grid; gap: 1.75rem; }
.finder-step { border: 0; min-width: 0; }
.finder-step legend {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-navy);
  margin-bottom: 1rem;
}
.finder-step legend small { font-family: var(--font-body); font-weight: 500; color: var(--color-text-light); font-size: 0.82rem; }
.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-navy);
  color: #fff;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.grade-path { position: relative; display: grid; grid-template-columns: repeat(var(--grades, 6), minmax(0, 1fr)); gap: 0.5rem; }
.grade-path::before {
  content: '';
  position: absolute;
  left: calc(50% / var(--grades, 6));
  right: calc(50% / var(--grades, 6));
  top: 19px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-highlight), var(--color-primary), var(--color-secondary));
  border-radius: 3px;
  opacity: 0.45;
}
.grade-node {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0 0.25rem 0.5rem;
  text-align: center;
}
.grade-dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--color-border);
  transition: all var(--t-normal);
  position: relative;
  z-index: 1;
}
.grade-name { font-family: var(--font-display); font-weight: 700; font-size: 1rem; color: var(--color-text-main); }
.grade-count { font-size: 0.75rem; color: var(--color-text-light); }
.grade-node:hover .grade-dot { border-color: var(--color-primary); transform: scale(1.08); }
.grade-node.active .grade-dot { background: var(--color-primary); border-color: var(--color-primary); box-shadow: 0 0 0 6px rgba(49, 85, 231, 0.18); }
.grade-node.active .grade-dot::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 46%;
  width: 8px;
  height: 14px;
  border: solid #fff;
  border-width: 0 3px 3px 0;
  transform: translate(-50%, -50%) rotate(45deg);
}
.grade-node.active .grade-name { color: var(--color-primary); }

.focus-chips { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.focus-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-pill);
  background: #fff;
  border: 1.5px solid var(--color-border);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-main);
  transition: all var(--t-fast);
}
.focus-chip svg { color: var(--cat); }
.focus-chip:hover { border-color: var(--cat); }
.focus-chip.active { background: var(--cat); border-color: var(--cat); color: #fff; }
.focus-chip.active svg { color: #fff; }

.finder-results { margin-top: 2rem; padding-top: 1.75rem; border-top: 1px dashed var(--color-border); min-height: 96px; }
.finder-empty {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--color-text-light);
  font-size: 0.98rem;
}
.finder-empty p { color: inherit; }

.finder-summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.finder-summary-text { display: flex; flex-direction: column; }
.finder-summary-text strong { font-family: var(--font-display); font-size: 1.3rem; color: var(--color-navy); }
.finder-summary-text span { font-size: 0.92rem; color: var(--color-text-muted); }
.finder-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; }

.finder-shelf {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: 0.25rem 0.25rem 1rem;
  margin: 0 -0.25rem;
  scroll-snap-type: x proximity;
}
.shelf-item {
  flex: 0 0 150px;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  scroll-snap-align: start;
}
.shelf-cover {
  display: grid;
  grid-template: minmax(0, 1fr) / minmax(0, 1fr);
  place-items: center;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--cat) 9%, #f3f3f8);
  padding: 0.6rem;
  transition: transform var(--t-normal), box-shadow var(--t-normal);
}
.shelf-cover img { max-width: 100%; max-height: 100%; width: auto; height: auto; border-radius: 4px; box-shadow: 0 8px 18px rgba(17, 22, 43, 0.25); }
.shelf-cover:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.shelf-cat { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--cat); line-height: 1.3; }
.shelf-title { font-family: var(--font-display); font-weight: 700; font-size: 0.92rem; line-height: 1.25; color: var(--color-navy); }
.shelf-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.shelf-price { font-family: var(--font-display); font-weight: 800; color: var(--color-navy); }
.shelf-add {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t-fast);
}
.shelf-add:hover { border-color: var(--color-danger); color: var(--color-danger); }
.shelf-add.saved, .bookmark-icon-btn.saved { color: var(--color-danger); }
.shelf-add.saved svg, .bookmark-icon-btn.saved svg, [data-save].saved svg { fill: var(--color-danger); color: var(--color-danger); }

/* ==========================================================================
   Categories
   ========================================================================== */
.categories-section { padding: 5rem 0; background: #fff; border-top: 1px solid var(--color-border-subtle); border-bottom: 1px solid var(--color-border-subtle); }
.categories-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

.category-card {
  --cat: var(--color-primary);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.9rem;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  transition: transform var(--t-normal), border-color var(--t-normal), box-shadow var(--t-normal), background var(--t-normal);
}
.category-card:hover { transform: translateY(-6px); border-color: var(--cat); background: #fff; box-shadow: 0 16px 32px -6px rgba(17, 22, 43, 0.12); }
.cat-top { display: flex; align-items: flex-start; justify-content: space-between; }
.cat-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--cat) 12%, #fff);
  color: var(--cat);
  transition: transform 0.5s var(--ease-bounce);
}
.category-card:hover .cat-icon-box { transform: scale(1.1) rotate(-5deg); }
.cat-count-pill { font-size: 0.78rem; font-weight: 700; padding: 0.25rem 0.7rem; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-pill); color: var(--color-text-muted); }
.cat-body { flex: 1; }
.cat-title { font-size: 1.3rem; font-weight: 700; color: var(--color-navy); margin-bottom: 0.35rem; }
.cat-tagline { font-size: 0.86rem; font-weight: 600; color: var(--cat); margin-bottom: 0.6rem; }
.cat-desc { font-size: 0.9rem; line-height: 1.55; }
.cat-explore-link { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.88rem; font-weight: 700; color: var(--cat); transition: gap var(--t-fast); }
.category-card:hover .cat-explore-link { gap: 0.85rem; }

/* ==========================================================================
   Spotlight
   ========================================================================== */
.spotlight-section { position: relative; overflow: hidden; padding: 5rem 0; background: var(--color-navy); }
.spotlight-section::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(49, 85, 231, 0.28), transparent 70%);
  pointer-events: none;
}
.spotlight-section .section-title { color: #fff; }
.spotlight-section .section-subtitle { color: #A9B4CA; }
.spotlight-grid { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }

.spotlight-card {
  display: flex;
  flex-direction: column;
  padding: 1.6rem;
  background: var(--color-navy-card);
  border: 1px solid var(--color-navy-border);
  border-radius: var(--radius-lg);
  transition: transform var(--t-normal), border-color var(--t-normal), box-shadow var(--t-normal);
}
.spotlight-card:hover { transform: translateY(-8px); border-color: var(--color-primary); box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4); }
.spotlight-cover-wrap {
  display: grid;
  grid-template: minmax(0, 1fr) / minmax(0, 1fr);
  place-items: center;
  height: 280px;
  padding: 1rem;
  margin-bottom: 1.3rem;
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-md);
}
.spotlight-cover-img { max-height: 100%; max-width: 100%; width: auto; border-radius: 6px; box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5); transition: transform 0.5s var(--ease-bounce); }
.spotlight-card:hover .spotlight-cover-img { transform: scale(1.05) rotate(-1.5deg); }
.spotlight-meta-pill { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.8rem; }
.spotlight-age { font-size: 0.78rem; color: #A9B4CA; }
.spotlight-title { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 0.35rem; }
.spotlight-sub { font-size: 0.88rem; color: #A9B4CA; line-height: 1.5; margin-bottom: 1rem; }
.spotlight-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--color-navy-border); }
.spotlight-price { font-family: var(--font-display); font-size: 1.25rem; font-weight: 800; color: var(--color-accent); }
.spotlight-cta { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.88rem; font-weight: 700; color: #fff; transition: gap var(--t-fast); }
.spotlight-card:hover .spotlight-cta { gap: 0.75rem; }

/* ==========================================================================
   Catalogue
   ========================================================================== */
.catalogue-section { padding: 5rem 0 6rem; }

.catalogue-controls {
  position: sticky;
  top: var(--header-h);
  z-index: 50;
  isolation: isolate;
  padding: 0.85rem 0 0.75rem;
  margin-bottom: 1.5rem;
}
.catalogue-controls::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 50%;
  width: 100vw;
  transform: translateX(-50%);
  background: rgba(250, 249, 246, 0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  z-index: -1;
}

.controls-row { display: flex; align-items: center; gap: 0.85rem; }
.search-input-box { position: relative; flex: 1; min-width: 0; }
.search-input-box > svg { position: absolute; left: 1.1rem; top: 50%; transform: translateY(-50%); color: var(--color-text-light); pointer-events: none; }
.catalogue-search-input {
  width: 100%;
  height: 48px;
  padding: 0 2.8rem 0 3rem;
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  -webkit-appearance: none;
  appearance: none;
}
.catalogue-search-input::-webkit-search-cancel-button { display: none; }
.catalogue-search-input::placeholder { color: var(--color-text-light); }
.catalogue-search-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 4px rgba(49, 85, 231, 0.14); }
.search-clear-btn { position: absolute; right: 0.6rem; top: 50%; transform: translateY(-50%); width: 32px; height: 32px; border-radius: 50%; color: var(--color-text-light); display: flex; align-items: center; justify-content: center; }
.search-clear-btn:hover { background: var(--color-bg-alt); color: var(--color-text-main); }

.filters-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  height: 48px;
  padding: 0 1.1rem;
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
}
.filters-toggle[aria-expanded='true'] { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-light); }
.filters-count { min-width: 20px; height: 20px; padding: 0 5px; border-radius: var(--radius-pill); background: var(--color-primary); color: #fff; font-size: 0.72rem; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }

.filter-panel { display: flex; align-items: center; gap: 0.7rem; }
.custom-select {
  height: 48px;
  padding: 0 2.3rem 0 1.1rem;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23545B6E' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") no-repeat right 0.85rem center;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  -webkit-appearance: none;
  appearance: none;
  min-width: 0;
  transition: border-color var(--t-fast);
}
.custom-select:hover { border-color: #c9cdd6; }
.custom-select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 4px rgba(49, 85, 231, 0.14); }

.view-toggle-group { display: flex; padding: 0.2rem; background: #fff; border: 1.5px solid var(--color-border); border-radius: var(--radius-pill); height: 48px; align-items: center; }
.view-toggle-btn { width: 38px; height: 38px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--color-text-muted); transition: all var(--t-fast); }
.view-toggle-btn.active { background: var(--color-primary); color: #fff; }

.category-pills-strip {
  display: flex;
  gap: 0.55rem;
  overflow-x: auto;
  padding: 0.8rem 0.25rem 0.2rem;
  margin: 0 -0.25rem;
  scrollbar-width: none;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 12px, #000 calc(100% - 28px), transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 12px, #000 calc(100% - 28px), transparent 100%);
}
.category-pills-strip::-webkit-scrollbar { display: none; }
.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex: none;
  padding: 0.5rem 1rem;
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: all var(--t-fast);
}
.category-pill:hover { border-color: var(--cat, var(--color-primary)); color: var(--cat, var(--color-primary)); }
.category-pill.active { background: var(--cat, var(--color-primary)); border-color: var(--cat, var(--color-primary)); color: #fff; box-shadow: 0 4px 14px rgba(17, 22, 43, 0.2); }
.pill-count { font-size: 0.72rem; background: rgba(0, 0, 0, 0.07); padding: 0.1rem 0.45rem; border-radius: var(--radius-pill); }
.category-pill.active .pill-count { background: rgba(255, 255, 255, 0.25); }

.results-meta-bar { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.75rem 1rem; margin-bottom: 1.5rem; min-height: 34px; }
.results-count { font-size: 0.95rem; font-weight: 600; color: var(--color-text-muted); }
.results-count strong { color: var(--color-navy); }
.active-chips-list { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.filter-chip { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.3rem 0.35rem 0.3rem 0.8rem; background: var(--color-primary-light); color: var(--color-primary); border-radius: var(--radius-pill); font-size: 0.8rem; font-weight: 600; }
.filter-chip button { width: 22px; height: 22px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 1rem; line-height: 1; color: var(--color-primary); }
.filter-chip button:hover { background: rgba(49, 85, 231, 0.15); }
.clear-all-filters-btn { font-size: 0.82rem; font-weight: 700; color: var(--color-danger); text-decoration: underline; padding: 0.3rem 0.4rem; }

/* Book grid */
.books-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

.book-card {
  --cat: var(--color-primary);
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: 0.85rem 0.85rem 1.1rem;
  transition: transform var(--t-normal), box-shadow var(--t-normal), border-color var(--t-normal);
}
.book-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--cat) 35%, #fff); }

.book-cover-container {
  position: relative;
  display: block;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: color-mix(in srgb, var(--cat) 9%, #f3f3f8);
}
.book-cover-frame { position: absolute; inset: 0; display: grid; grid-template: minmax(0, 1fr) / minmax(0, 1fr); place-items: center; }
.book-cover-frame img {
  max-width: 82%;
  max-height: 86%;
  width: auto;
  height: auto;
  border-radius: 4px 7px 7px 4px;
  box-shadow: -2px 0 0 rgba(0, 0, 0, 0.08), 0 14px 26px -6px rgba(17, 22, 43, 0.38);
  transition: transform 0.5s var(--ease);
}
.book-cover-frame[data-aspect='landscape'] img { max-width: 88%; max-height: 74%; }
.book-card:hover .book-cover-frame img { transform: scale(1.04) rotate(-1deg); }

.level-chip {
  position: absolute;
  top: 0.65rem;
  left: 0.65rem;
  padding: 0.2rem 0.6rem;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-navy);
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.cover-hover-overlay {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  justify-content: center;
  padding: 0.8rem;
  background: linear-gradient(to top, rgba(17, 22, 43, 0.55), transparent);
  opacity: 0;
  transition: opacity var(--t-normal);
}
.hover-action-btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.45rem 0.95rem; background: #fff; color: var(--color-navy); border-radius: var(--radius-pill); font-size: 0.8rem; font-weight: 700; }
.book-card:hover .cover-hover-overlay, .book-cover-container:focus-visible .cover-hover-overlay { opacity: 1; }

.bookmark-icon-btn {
  position: absolute;
  top: 1.35rem;
  right: 1.35rem;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: transform var(--t-normal), color var(--t-fast);
}
.bookmark-icon-btn:hover { transform: scale(1.12); color: var(--color-danger); }
.bookmark-icon-btn.saved { animation: pop 0.35s var(--ease-bounce); }
@keyframes pop { 50% { transform: scale(1.3); } }

.book-info { display: flex; flex-direction: column; flex: 1; padding: 0.95rem 0.35rem 0; }
.book-cat-tag { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--cat); margin-bottom: 0.3rem; }
.book-card-title { font-size: 1.08rem; font-weight: 700; color: var(--color-navy); line-height: 1.25; margin-bottom: 0.3rem; }
.book-card-title a:hover { color: var(--color-primary); }
.book-card-subtitle { font-size: 0.85rem; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 1rem; }
.book-card-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 0.85rem; border-top: 1px solid var(--color-border-subtle); }
.book-price-tag { font-family: var(--font-display); font-size: 1.15rem; font-weight: 800; color: var(--color-navy); }
.preview-pill-btn { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.4rem 0.85rem; background: var(--color-primary-light); color: var(--color-primary); border-radius: var(--radius-pill); font-size: 0.82rem; font-weight: 700; transition: all var(--t-fast); }
.preview-pill-btn:hover { background: var(--color-primary); color: #fff; }

/* List layout */
.books-grid.list-view { grid-template-columns: 1fr; gap: 1rem; }
.list-view .book-card { flex-direction: row; align-items: stretch; gap: 1.25rem; padding: 0.85rem; }
.list-view .book-cover-container { flex: 0 0 160px; }
.list-view .book-info { padding: 0.25rem 3.5rem 0.25rem 0; justify-content: center; }
.list-view .book-card-subtitle { -webkit-line-clamp: 3; }
.list-view .book-card-footer { margin-top: 0.75rem; max-width: 360px; }
.list-view .bookmark-icon-btn { top: 1rem; right: 1rem; }

.catalogue-empty-state { grid-column: 1 / -1; text-align: center; padding: 4rem 1rem; background: #fff; border: 1.5px dashed var(--color-border); border-radius: var(--radius-lg); }
.empty-state-icon { width: 64px; height: 64px; margin: 0 auto 1rem; border-radius: 50%; background: var(--color-primary-light); color: var(--color-primary); display: flex; align-items: center; justify-content: center; }
.empty-state-title { font-size: 1.35rem; color: var(--color-navy); margin-bottom: 0.4rem; }
.empty-state-text { max-width: 420px; margin: 0 auto 1.4rem; }

/* ==========================================================================
   Collections
   ========================================================================== */
.collections-section { padding: 5rem 0; background: #fff; border-top: 1px solid var(--color-border-subtle); }
.collections-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.collection-banner-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 300px;
  padding: 2rem;
  overflow: hidden;
  background: linear-gradient(135deg, #FAF9F6, #F1F0EA);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: transform var(--t-normal), border-color var(--t-normal), box-shadow var(--t-normal), background var(--t-normal);
}
.collection-banner-card:hover { transform: translateY(-6px); border-color: var(--color-primary); box-shadow: var(--shadow-lg); background: #fff; }
.collection-banner-card:last-child:nth-child(3n + 1) { grid-column: 1 / -1; min-height: 0; }
.collection-covers { position: absolute; top: 1.4rem; right: 1.4rem; display: flex; }
.collection-covers img { width: 46px; height: 62px; object-fit: cover; border-radius: 5px; border: 2px solid #fff; box-shadow: var(--shadow-md); margin-left: -16px; transition: transform var(--t-normal); }
.collection-covers img:nth-child(1) { transform: rotate(-6deg); }
.collection-covers img:nth-child(2) { transform: rotate(2deg) translateY(-3px); }
.collection-covers img:nth-child(3) { transform: rotate(8deg); }
.collection-banner-card:hover .collection-covers img:nth-child(1) { transform: rotate(-10deg) translateX(-4px); }
.collection-banner-card:hover .collection-covers img:nth-child(3) { transform: rotate(12deg) translateX(4px); }
.collection-badge-tag { align-self: flex-start; padding: 0.3rem 0.75rem; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-pill); font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-primary); }
.collection-title { font-size: 1.4rem; font-weight: 800; color: var(--color-navy); margin-bottom: 0.3rem; }
.collection-tagline { font-size: 0.88rem; font-weight: 600; color: var(--color-secondary-text); margin-bottom: 0.6rem; }
.collection-desc { font-size: 0.9rem; line-height: 1.55; }
.collection-footer-cta { margin-top: auto; display: inline-flex; align-items: center; gap: 0.55rem; font-size: 0.9rem; font-weight: 700; color: var(--color-primary); transition: gap var(--t-fast); }
.collection-banner-card:hover .collection-footer-cta { gap: 0.9rem; }

/* ==========================================================================
   About
   ========================================================================== */
.about-section { padding: 6rem 0; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 4rem; }
.about-visual-box { position: sticky; top: calc(var(--header-h) + 1.5rem); }
.about-content-left .badge { margin-bottom: 1.1rem; }
.about-title { font-size: clamp(2rem, 4vw, 2.8rem); letter-spacing: -0.03em; color: var(--color-navy); margin-bottom: 1.3rem; }
.about-lead { font-size: 1.15rem; font-weight: 500; line-height: 1.6; color: var(--color-text-main); margin-bottom: 1.1rem; }
.about-body { line-height: 1.7; margin-bottom: 1.1rem; }
.about-aim { margin: 1.6rem 0 1.4rem; padding: 1.1rem 1.3rem; background: var(--color-primary-light); border-left: 4px solid var(--color-primary); border-radius: var(--radius-md); }
.about-aim-label { display: block; font-family: var(--font-display); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-primary); margin-bottom: 0.35rem; }
.about-aim p { margin: 0; font-weight: 500; line-height: 1.65; color: var(--color-navy); }
.about-signoff { line-height: 1.6; margin-bottom: 2rem; color: var(--color-navy); }
.about-pillars-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 2.25rem; }
.pillar-item { display: flex; align-items: flex-start; gap: 0.85rem; }
.pillar-icon-box { width: 40px; height: 40px; border-radius: var(--radius-sm); background: var(--color-primary-light); color: var(--color-primary); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.pillar-title { font-size: 0.98rem; color: var(--color-navy); margin-bottom: 0.15rem; }
.pillar-text { font-size: 0.85rem; line-height: 1.45; }

.about-visual-box { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-xl); padding: 2.5rem; box-shadow: var(--shadow-lg); }
.publisher-badge-card { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 0.75rem; padding-bottom: 1.75rem; margin-bottom: 1.75rem; border-bottom: 1px solid var(--color-border-subtle); }
.pub-logo-large { width: 240px; max-width: 100%; height: auto; flex-shrink: 0; display: block; margin: 0 auto; padding: 0.75rem 1.25rem; border: 1.5px solid var(--color-border); border-radius: var(--radius-md); background: #ffffff; box-shadow: var(--shadow-sm); }
.pub-name-headline { font-size: 1.45rem; font-weight: 800; color: var(--color-navy); }
.pub-tagline, .pub-address-text { font-family: var(--font-body); font-size: 1rem; font-weight: 600; font-style: italic; color: var(--color-navy); letter-spacing: -0.01em; line-height: 1.45; text-align: center; margin: 0.25rem 0 0; }
.pub-tagline-quote { color: var(--color-secondary); font-style: normal; font-weight: 800; font-size: 1.2em; vertical-align: -0.05em; padding: 0 0.08em; }
.pub-meta-list { display: flex; flex-direction: column; gap: 1rem; }
.pub-meta-row { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; font-size: 0.93rem; }
.pub-meta-label { color: var(--color-text-light); font-weight: 500; }
.pub-meta-val { font-weight: 700; color: var(--color-navy); text-align: right; }
.pub-reg-no { font-size: 0.88rem; letter-spacing: 0.03em; white-space: nowrap; }

/* ==========================================================================
   Devotion
   ========================================================================== */
.devotion-section {
  padding: 5rem 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(246, 214, 120, 0.35), transparent 55%),
    linear-gradient(180deg, var(--color-bg) 0%, #FBF3DF 50%, var(--color-bg) 100%);
}
.devotion-grid { display: grid; grid-template-columns: minmax(0, 380px) minmax(0, 1fr); align-items: center; gap: 4.5rem; justify-content: center; }
.devotion-frame {
  position: relative;
  margin: 0;
  padding: 10px;
  border-radius: 22px;
  background: linear-gradient(145deg, #F6D77A, #B98A22 45%, #F3DB8C 70%, #A8771A);
  box-shadow: 0 28px 60px -18px rgba(120, 80, 10, 0.45), 0 0 0 6px rgba(246, 214, 120, 0.22);
}
.devotion-frame::after {
  content: '';
  position: absolute;
  inset: 10px;
  border-radius: 14px;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.55);
  pointer-events: none;
}
.devotion-frame img { display: block; width: 100%; height: auto; border-radius: 14px; }
.devotion-text { max-width: 520px; }
.devotion-text .badge { margin-bottom: 1.1rem; }
.devotion-quote { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; color: var(--color-navy); margin-bottom: 0.9rem; }
.devotion-text p { line-height: 1.7; }

/* ==========================================================================
   Closing CTA & footer
   ========================================================================== */
.closing-cta-section { position: relative; overflow: hidden; padding: 5rem 0; background: linear-gradient(135deg, var(--color-navy), #1B2347); text-align: center; }
.closing-cta-card { max-width: 820px; }
.closing-cta-title { font-size: clamp(1.9rem, 4vw, 2.9rem); font-weight: 800; color: #fff; margin-bottom: 1rem; }
.closing-cta-text { font-size: 1.1rem; line-height: 1.65; color: #B3BDD1; margin: 0 auto 2.1rem; max-width: 640px; }
.closing-btn-group { display: flex; align-items: center; justify-content: center; gap: 1rem; flex-wrap: wrap; }

.site-footer { background: #0B0E1B; color: #A5B0C5; padding: 4.5rem 0 2rem; }
.footer-top-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.6fr; gap: 3rem; margin-bottom: 3.5rem; }
.footer-logo-card { display: inline-block; padding: 0.55rem 0.9rem; background: #fff; border-radius: var(--radius-md); margin-bottom: 1.25rem; }
.footer-logo-card .brand-logo-img { height: 96px; }
.footer-brand-desc { font-size: 0.92rem; line-height: 1.65; color: #A5B0C5; max-width: 320px; }
.footer-reg { display: inline-flex; align-items: center; gap: 0.6rem; margin-top: 1.1rem; padding: 0.55rem 0.9rem; border: 1px solid rgba(215, 244, 91, 0.45); border-radius: var(--radius-md); background: rgba(255, 255, 255, 0.06); color: #d7f45b; }
.footer-reg span { display: flex; flex-direction: column; font-size: 0.82rem; font-weight: 700; line-height: 1.3; color: #fff; }
.footer-reg small { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.04em; color: #d7f45b; }
.footer-heading { font-size: 1.02rem; color: #fff; margin-bottom: 1.2rem; }
.footer-links-list { display: flex; flex-direction: column; gap: 0.7rem; }
.footer-link { font-size: 0.9rem; color: #A5B0C5; transition: color var(--t-fast); }
.footer-link:hover { color: #fff; text-decoration: underline; }
.footer-contact-info { display: flex; flex-direction: column; gap: 1rem; font-size: 0.9rem; line-height: 1.55; }
.contact-block { display: flex; flex-direction: column; }
.contact-block strong { color: #fff; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.15rem; }
.footer-bottom-bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: 1.75rem; border-top: 1px solid rgba(255, 255, 255, 0.1); font-size: 0.85rem; }
.footer-top-link { color: #A5B0C5; font-weight: 600; }
.footer-top-link:hover { color: #fff; }

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(10, 14, 29, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-normal), visibility var(--t-normal);
}
.modal-backdrop.active { opacity: 1; visibility: visible; }
#modalIsbn { white-space: nowrap; }
#inquiryModal { z-index: 2200; }
#spotlightModal { z-index: 2300; }

.preview-modal-dialog {
  position: relative;
  width: 100%;
  max-width: 1040px;
  max-height: calc(100vh - 3rem);
  max-height: calc(100dvh - 3rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: #fff;
  border-radius: var(--radius-xl);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  transform: scale(0.96) translateY(18px);
  transition: transform 0.45s var(--ease-bounce);
}
.modal-backdrop.active .preview-modal-dialog { transform: none; }

.modal-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 20;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t-fast);
}
.modal-close-btn:hover { background: var(--color-bg-alt); transform: rotate(90deg); }

.preview-modal-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; }
.modal-visual-column {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 2rem;
  background: linear-gradient(160deg, #EEF0FF, #F7F2FF 55%, #F3F9DC);
  border-radius: var(--radius-xl) 0 0 var(--radius-xl);
}

.modal-cover-stage { position: relative; display: grid; grid-template: minmax(0, 1fr) / minmax(0, 1fr); place-items: center; height: 440px; }
.modal-cover-img { max-width: 100%; max-height: 100%; width: auto; height: auto; border-radius: 6px; box-shadow: var(--shadow-book); }
.modal-cover-stage[data-mode='spread'] .modal-cover-img { width: 100%; height: auto; }
.modal-cover-stage[data-mode='3d'] .modal-cover-img { display: none; }

.book3d-scene { display: none; width: 100%; height: 100%; place-items: center; grid-template: minmax(0, 1fr) / minmax(0, 1fr); perspective: 1100px; cursor: grab; touch-action: pan-y; position: relative; border-radius: var(--radius-md); }
.book3d-scene:focus-visible { outline-offset: 4px; }
.book3d-scene.dragging { cursor: grabbing; }
.book3d-scene::after { content: ''; position: absolute; bottom: 8%; left: 50%; width: 52%; height: 22px; transform: translateX(-50%); background: radial-gradient(ellipse, rgba(17, 22, 43, 0.28), transparent 70%); pointer-events: none; }
.modal-cover-stage[data-mode='3d'] .book3d-scene { display: grid; }
.book3d-hint { display: none; position: absolute; bottom: -0.2rem; left: 0; right: 0; text-align: center; font-size: 0.78rem; font-weight: 600; color: var(--color-text-muted); pointer-events: none; transition: opacity var(--t-normal); }
.modal-cover-stage[data-mode='3d'] .book3d-hint { display: block; }
.book3d-hint.hidden { opacity: 0; }

.book3d { position: relative; width: var(--bw, 230px); height: var(--bh, 303px); transform-style: preserve-3d; transform: rotateX(-8deg) rotateY(-28deg); }
.b3-face { position: absolute; backface-visibility: hidden; background-color: #e9e6df; background-repeat: no-repeat; }
.b3-front, .b3-back { inset: 0; background-size: cover; background-position: center; border-radius: 2px 5px 5px 2px; }
.b3-front { transform: translateZ(calc(var(--bd) / 2)); }
.b3-back { background-size: 200% 100%; background-position: 0 0; transform: rotateY(180deg) translateZ(calc(var(--bd) / 2)); }
.b3-front::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(0, 0, 0, 0.25), transparent 8%, transparent 92%, rgba(255, 255, 255, 0.12)); }
.b3-spine { top: 0; left: 0; width: var(--bd); height: 100%; background-size: 600% 100%; background-position: 0 0; transform-origin: left center; transform: translateZ(calc(var(--bd) / -2)) rotateY(-90deg); filter: brightness(0.8); }
.b3-pages, .b3-top, .b3-bottom { background: repeating-linear-gradient(90deg, #f6f1e6 0 2px, #e4ddcc 2px 3px); }
.b3-pages { top: 3px; right: 0; width: var(--bd); height: calc(100% - 6px); transform-origin: right center; transform: translateZ(calc(var(--bd) / -2)) rotateY(90deg); }
.b3-top { top: 0; left: 3px; width: calc(100% - 6px); height: var(--bd); background: repeating-linear-gradient(0deg, #f6f1e6 0 2px, #e4ddcc 2px 3px); transform-origin: top center; transform: translateZ(calc(var(--bd) / -2)) rotateX(90deg); }
.b3-bottom { bottom: 0; left: 3px; width: calc(100% - 6px); height: var(--bd); background: repeating-linear-gradient(0deg, #f6f1e6 0 2px, #e4ddcc 2px 3px); transform-origin: bottom center; transform: translateZ(calc(var(--bd) / -2)) rotateX(-90deg); }

.view-switch-tabs { display: flex; padding: 0.25rem; background: rgba(255, 255, 255, 0.75); border: 1px solid rgba(17, 22, 43, 0.08); border-radius: var(--radius-pill); }
.view-switch-btn { flex: 1; padding: 0.55rem 0.5rem; border-radius: var(--radius-pill); font-size: 0.84rem; font-weight: 600; color: var(--color-text-muted); transition: all var(--t-fast); }
.view-switch-btn:hover { color: var(--color-primary); }
.view-switch-btn.active { background: var(--color-primary); color: #fff; box-shadow: 0 4px 12px rgba(49, 85, 231, 0.3); }

.modal-pager { display: flex; align-items: center; justify-content: center; gap: 1rem; }
.modal-pager-label { font-size: 0.85rem; font-weight: 600; color: var(--color-text-muted); min-width: 70px; text-align: center; }
.modal-nav-btn { width: 40px; height: 40px; border-radius: 50%; background: #fff; border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center; transition: all var(--t-fast); }
.modal-nav-btn:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.modal-details-column { padding: 2.5rem 2.5rem 2rem; display: flex; flex-direction: column; }
.modal-header-meta { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0 2.75rem 1rem 0; }
.modal-book-title { font-size: clamp(1.6rem, 3vw, 2.1rem); font-weight: 800; letter-spacing: -0.02em; color: var(--color-navy); margin-bottom: 0.3rem; }
.modal-book-subtitle { font-size: 1rem; color: var(--color-text-muted); margin-bottom: 1.4rem; }
.modal-meta-table { display: grid; grid-template-columns: 0.8fr 0.9fr 1.1fr 1.6fr; gap: 0.75rem; padding: 1rem; margin-bottom: 1.5rem; background: var(--color-bg); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); }
.meta-table-item { min-width: 0; }
.meta-label { display: block; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-light); margin-bottom: 0.15rem; }
.meta-value { font-variant-numeric: tabular-nums; font-size: 0.92rem; font-weight: 700; color: var(--color-navy); overflow-wrap: anywhere; }
.modal-desc-heading { font-size: 0.82rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-light); margin-bottom: 0.55rem; }
.modal-book-desc { font-size: 0.95rem; line-height: 1.65; margin-bottom: 1.4rem; }
.modal-highlights-list { display: grid; gap: 0.5rem; margin-bottom: 1.4rem; }
.modal-highlights-list li { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.92rem; color: var(--color-text-main); }
.modal-highlights-list svg { flex-shrink: 0; margin-top: 0.2rem; padding: 2px; border-radius: 50%; background: var(--color-accent); color: #26380a; width: 18px; height: 18px; }
.modal-related { margin-bottom: 1.4rem; }
.related-row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.related-item { width: 52px; height: 68px; border-radius: 6px; overflow: hidden; border: 2px solid #fff; box-shadow: var(--shadow-md); background: var(--color-bg-alt); transition: transform var(--t-fast); }
.related-item:hover { transform: translateY(-3px); }
.related-item img { width: 100%; height: 100%; object-fit: cover; }
.modal-actions-bar { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: auto; padding-top: 1.25rem; border-top: 1px solid var(--color-border-subtle); }
[data-save].saved { color: var(--color-danger); border-color: color-mix(in srgb, var(--color-danger) 45%, #fff); }

/* Inquiry form */
.inquiry-modal-dialog { max-width: 640px; padding: 2.25rem; }
.inquiry-head { margin: 0 3rem 1.5rem 0; }
.inquiry-title { font-size: 1.7rem; font-weight: 800; color: var(--color-navy); margin: 0.5rem 0 0.35rem; }
.inquiry-intro { font-size: 0.92rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: 0.82rem; font-weight: 700; color: var(--color-navy); margin-bottom: 0.35rem; }
.form-control { width: 100%; padding: 0.75rem 1rem; background: #fff; border: 1.5px solid var(--color-border); border-radius: var(--radius-md); transition: border-color var(--t-fast), box-shadow var(--t-fast); resize: vertical; }
.form-control:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 4px rgba(49, 85, 231, 0.14); }
.form-note { margin-top: 0.85rem; font-size: 0.78rem; line-height: 1.5; color: var(--color-text-light); }

/* Reading list drawer */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2100;
  background: rgba(10, 14, 29, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-normal), visibility var(--t-normal);
}
.drawer-backdrop.active { opacity: 1; visibility: visible; }
.slide-drawer { position: absolute; top: 0; right: 0; bottom: 0; width: min(440px, 100%); display: flex; flex-direction: column; background: #fff; box-shadow: -20px 0 60px rgba(0, 0, 0, 0.25); transform: translateX(100%); transition: transform var(--t-normal); }
.drawer-backdrop.active .slide-drawer { transform: none; }
.drawer-header { display: flex; align-items: center; justify-content: space-between; padding: 1.4rem 1.5rem; border-bottom: 1px solid var(--color-border-subtle); }
.drawer-title { font-size: 1.3rem; color: var(--color-navy); }
.drawer-sub { font-size: 0.82rem; color: var(--color-text-light); }
.drawer-body { flex: 1; overflow-y: auto; padding: 1.25rem 1.5rem; overscroll-behavior: contain; }
.drawer-banner { padding: 0.7rem 0.9rem; margin-bottom: 1rem; background: var(--color-primary-light); color: var(--color-primary); border-radius: var(--radius-md); font-size: 0.85rem; font-weight: 600; }
.saved-items-list { display: flex; flex-direction: column; gap: 0.75rem; }
.saved-item-card { display: flex; align-items: center; gap: 0.9rem; padding: 0.7rem; background: var(--color-bg); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); }
.saved-item-thumb { width: 48px; height: 64px; object-fit: cover; border-radius: 5px; box-shadow: var(--shadow-md); flex-shrink: 0; }
.saved-item-info { flex: 1; min-width: 0; }
.saved-item-title { display: block; text-align: left; font-family: var(--font-display); font-size: 0.98rem; font-weight: 700; color: var(--color-navy); line-height: 1.3; }
.saved-item-title:hover { color: var(--color-primary); }
.saved-item-cat { font-size: 0.8rem; color: var(--color-text-muted); }
.saved-item-remove-btn { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--color-text-light); flex-shrink: 0; }
.saved-item-remove-btn:hover { background: #FDECEC; color: var(--color-danger); }
.drawer-empty { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 0.5rem; padding: 3rem 1rem; color: var(--color-text-light); }
.drawer-empty svg { opacity: 0.45; margin-bottom: 0.5rem; }
.drawer-empty-title { font-weight: 700; color: var(--color-navy); }
.drawer-empty .btn { margin-top: 0.75rem; }
.drawer-footer { display: flex; flex-direction: column; gap: 0.7rem; padding: 1.1rem 1.5rem 1.25rem; border-top: 1px solid var(--color-border-subtle); background: #fff; }
.drawer-total { display: flex; align-items: baseline; justify-content: space-between; font-size: 0.95rem; color: var(--color-text-muted); }
.drawer-total strong { font-family: var(--font-display); font-size: 1.4rem; color: var(--color-navy); }
.drawer-share-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }

/* Quick search */
.spotlight-backdrop { align-items: flex-start; padding-top: 12vh; }
.spotlight-modal-dialog { width: 100%; max-width: 640px; background: #fff; border-radius: var(--radius-lg); box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4); overflow: hidden; transform: translateY(-12px) scale(0.98); transition: transform var(--t-normal); }
.modal-backdrop.active .spotlight-modal-dialog { transform: none; }
.spotlight-input-wrap { display: flex; align-items: center; gap: 0.85rem; padding: 0.4rem 1rem 0.4rem 1.25rem; border-bottom: 1px solid var(--color-border-subtle); color: var(--color-text-light); }
.spotlight-search-field { flex: 1; min-width: 0; height: 52px; border: 0; background: none; font-size: 1.05rem; color: var(--color-text-main); }
.spotlight-search-field:focus { outline: none; }
.spotlight-close { padding: 0.2rem 0.55rem; font-size: 0.72rem; font-weight: 700; border: 1px solid var(--color-border); border-radius: 6px; color: var(--color-text-muted); }
.spotlight-results-container { max-height: 50vh; overflow-y: auto; padding: 0.5rem; }
.spotlight-group { padding: 0.5rem 0.75rem 0.25rem; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-light); }
.spotlight-result-row { display: flex; align-items: center; gap: 0.9rem; width: 100%; padding: 0.6rem 0.75rem; border-radius: var(--radius-md); text-align: left; }
.spotlight-result-row[aria-selected='true'], .spotlight-result-row:hover { background: var(--color-primary-light); }
.spotlight-result-thumb { width: 38px; height: 50px; object-fit: cover; border-radius: 4px; box-shadow: var(--shadow-md); flex-shrink: 0; }
.spotlight-result-title { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; color: var(--color-navy); font-size: 0.95rem; }
.spotlight-result-cat { display: block; font-size: 0.8rem; color: var(--color-text-muted); }
.spotlight-all { color: var(--color-primary); }
.spotlight-empty { padding: 2rem; text-align: center; color: var(--color-text-muted); }
.spotlight-foot { display: flex; gap: 1.25rem; padding: 0.6rem 1.25rem; border-top: 1px solid var(--color-border-subtle); font-size: 0.74rem; color: var(--color-text-light); background: var(--color-bg); }

/* Toasts & back to top */
.toast-container { position: fixed; left: 50%; bottom: 1.5rem; transform: translateX(-50%); z-index: 4000; display: flex; flex-direction: column; align-items: center; gap: 0.6rem; width: max-content; max-width: calc(100vw - 2rem); pointer-events: none; }
.toast { display: flex; align-items: center; gap: 0.7rem; padding: 0.8rem 1.2rem; background: var(--color-navy); color: #fff; border-radius: var(--radius-pill); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3); font-size: 0.9rem; font-weight: 500; opacity: 0; transform: translateY(16px); transition: all 0.4s var(--ease-bounce); }
.toast svg { flex-shrink: 0; }
.toast.show { opacity: 1; transform: none; }

.back-to-top { position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 900; width: 48px; height: 48px; border-radius: 50%; background: var(--color-navy); color: #fff; box-shadow: var(--shadow-lg); display: flex; align-items: center; justify-content: center; transition: transform var(--t-fast), background var(--t-fast); }
.back-to-top:hover { background: var(--color-primary); transform: translateY(-3px); }

/* ==========================================================================
   Motion
   ========================================================================== */
@media (prefers-reduced-motion: no-preference) {
  .js .reveal { opacity: 0; translate: 0 22px; transition: opacity 0.6s ease var(--reveal-delay, 0ms), translate 0.7s var(--ease) var(--reveal-delay, 0ms); }
  .js .reveal.in-view { opacity: 1; translate: 0 0; }
  .js .book-card { animation: card-in 0.5s var(--ease) both; animation-delay: calc(var(--i, 0) * 35ms); }
  @keyframes card-in { from { opacity: 0; translate: 0 16px; } }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1240px) {
  .books-grid { grid-template-columns: repeat(3, 1fr); }
  .nav-link { padding: 0.5rem 0.6rem; }
  .header-inner { gap: 1rem; }
  .search-trigger-label, .kbd-shortcut { display: none; }
  .search-trigger-btn { width: 44px; padding: 0; justify-content: center; }
}

@media (max-width: 1100px) {
  .header-cta { display: none; }
  .footer-top-grid { grid-template-columns: 1fr 1fr; }
  .modal-meta-table { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 980px) {
  :root { --header-h: 100px; }
  .brand-logo-img { height: 76px; }
  .brand-logo-link { padding: 0.2rem 0.65rem; }
  .desktop-nav { display: none; }
  .mobile-menu-toggle { display: inline-flex; }

  .hero-section { padding: 3rem 0 3.5rem; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 1rem; }
  .hero-content { max-width: none; }
  .hero-visual { --hs: 0.85; }

  .categories-grid, .spotlight-grid, .collections-grid { grid-template-columns: repeat(2, 1fr); }
  .collection-banner-card:last-child:nth-child(3n + 1) { grid-column: auto; }
  .collection-banner-card:last-child:nth-child(2n + 1) { grid-column: 1 / -1; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .devotion-grid { grid-template-columns: minmax(0, 360px); gap: 2.5rem; text-align: center; }
  .devotion-text { max-width: none; }
  .about-visual-box { position: static; }
  .finder-card { padding: 2rem; }

  /* Catalogue controls collapse into a filter panel */
  .catalogue-controls { position: static; padding: 0; }
  .catalogue-controls::before { display: none; }
  .filters-toggle { display: inline-flex; }
  .controls-row { flex-wrap: wrap; }
  .search-input-box { flex: 1 1 60%; }
  .filter-panel { display: none; flex: 1 1 100%; flex-wrap: wrap; padding: 0.9rem; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
  .filter-panel.open { display: grid; grid-template-columns: 1fr 1fr; }
  .filter-panel .custom-select:nth-child(3) { grid-column: 1 / -1; }
  .view-toggle-group { grid-column: 1 / -1; justify-self: start; }

  /* Preview modal becomes a full-height sheet */
  .modal-backdrop { padding: 0; align-items: flex-end; }
  .preview-modal-dialog { max-width: none; max-height: 94vh; max-height: 94dvh; border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
  .preview-modal-grid { grid-template-columns: 1fr; }
  .modal-visual-column { border-radius: var(--radius-xl) var(--radius-xl) 0 0; padding: 1.5rem 1.25rem 1.25rem; }
  .modal-cover-stage { height: 340px; }
  .modal-details-column { padding: 1.5rem 1.25rem 1.5rem; }
  .modal-header-meta { margin-right: 3rem; }
  .spotlight-backdrop { align-items: flex-start; padding: 4vh 0.75rem 0; }
}

@media (max-width: 720px) {
  .container { padding: 0 1.25rem; }
  .section-header { margin-bottom: 2rem; }
  .categories-section, .spotlight-section, .collections-section, .closing-cta-section { padding: 3.5rem 0; }
  .catalogue-section { padding: 3.5rem 0 4rem; }
  .about-section { padding: 4rem 0; }

  .hero-stats-strip { grid-template-columns: 1fr 1fr; gap: 1.25rem 1.5rem; }
  .hero-cta-group .btn { flex: 1 1 100%; }

  .finder-section { padding-bottom: 3.5rem; }
  .finder-card { padding: 1.5rem 1.25rem; border-radius: var(--radius-lg); }
  .grade-path { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 1rem; }
  .grade-path::before { display: none; }
  .finder-actions { width: 100%; }
  .finder-actions .btn { flex: 1 1 auto; padding-left: 0.8rem; padding-right: 0.8rem; }

  .categories-grid, .spotlight-grid, .collections-grid { grid-template-columns: 1fr; }
  .collection-banner-card:last-child:nth-child(2n + 1) { grid-column: auto; }
  .spotlight-cover-wrap { height: 240px; }
  .collection-banner-card { min-height: 0; }

  .books-grid { grid-template-columns: repeat(2, 1fr); gap: 0.85rem; }
  .book-card { padding: 0.55rem 0.55rem 0.85rem; border-radius: var(--radius-md); }
  .book-info { padding: 0.75rem 0.25rem 0; }
  .book-card-title { font-size: 0.95rem; }
  .book-card-subtitle { font-size: 0.78rem; -webkit-line-clamp: 2; margin-bottom: 0.7rem; }
  .book-card-footer { padding-top: 0.65rem; }
  .book-price-tag { font-size: 1rem; }
  .preview-pill-btn { padding: 0.35rem 0.6rem; font-size: 0.76rem; }
  .preview-pill-btn svg { display: none; }
  .bookmark-icon-btn { top: 0.9rem; right: 0.9rem; width: 34px; height: 34px; }
  .bookmark-icon-btn svg { width: 16px; height: 16px; }
  .level-chip { top: 0.45rem; left: 0.45rem; font-size: 0.64rem; padding: 0.15rem 0.5rem; }
  .cover-hover-overlay { display: none; }
  .books-grid.list-view { grid-template-columns: 1fr; }
  .list-view .book-cover-container { flex-basis: 110px; }
  .list-view .book-info { padding-right: 2.5rem; }

  .about-pillars-grid { grid-template-columns: 1fr; }
  .about-visual-box { padding: 1.5rem; }
  .publisher-badge-card { flex-direction: column; align-items: center; }
  .footer-top-grid { grid-template-columns: 1fr; gap: 2.25rem; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .inquiry-modal-dialog { padding: 1.5rem 1.25rem; }
  .inquiry-title { font-size: 1.45rem; }
  .modal-actions-bar .btn { flex: 1 1 calc(50% - 0.3rem); }
  .modal-actions-bar #modalInquireBtn { flex-basis: 100%; }
  .toast-container { bottom: 1rem; }
  .back-to-top { bottom: 5rem; }
}

@media (max-width: 480px) {
  .hero-visual { --hs: 0.7; }
  .hero-title { font-size: 2.25rem; }
  .shelf-item { flex-basis: 132px; }
  .modal-cover-stage { height: 300px; }
  .pub-logo-large { width: 200px; padding: 0.65rem 1rem; }
  .pub-tagline, .pub-address-text { font-size: 0.92rem; }
}