/* ==========================================================================
   يوسف طلعت — موقع القراءة الشخصي | Design System & Master Stylesheet
   Direction: RTL | Aesthetic: Literary Editorial (Murakami & Authore Inspired)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & Variables
   -------------------------------------------------------------------------- */
:root {
  /* Palette: Architectural gallery grey, sumi ink, deep lacquer vermilion */
  --color-bg: #EAEDF1;
  --color-bg-alt: #E1E5EA;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F6F8FA;
  --color-border: #CED4DA;
  --color-border-subtle: #DEE2E6;
  
  /* Dark midnight gallery section */
  --color-dark: #111215;
  --color-dark-surface: #1A1C22;
  --color-dark-border: #282C34;
  --color-dark-text: #F1F3F5;
  --color-dark-muted: #ADB5BD;
  
  /* Text & Ink - High contrast AAA certified */
  --color-text: #121417;
  --color-text-secondary: #343A40;
  --color-text-muted: #495057;
  --color-text-faint: #6C757D;
  
  /* Accents */
  --color-accent: #B02A1A;        /* Deep lacquer vermilion */
  --color-accent-hover: #8F1F12;
  --color-gold: #855C00;          /* Antique brass */
  --color-gold-faint: #F8F4EA;
  
  /* Typography Families */
  --font-display: 'Reem Kufi', 'Amiri', serif;
  --font-editorial: 'Amiri', 'Georgia', serif;
  --font-body: 'Tajawal', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Type Scale */
  --text-2xs: 0.6875rem;   /* 11px */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-md: 1.125rem;     /* 18px */
  --text-lg: 1.25rem;      /* 20px */
  --text-xl: 1.5rem;       /* 24px */
  --text-2xl: 2rem;        /* 32px */
  --text-3xl: 2.5rem;      /* 40px */
  --text-4xl: 3.5rem;      /* 56px */
  --text-mega: clamp(2.75rem, 6vw, 5.5rem);
  
  /* Spatial rhythm */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;
  
  /* Layout containers */
  --container-max: 1240px;
  --container-narrow: 860px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Shadows & Depth */
  --shadow-subtle: 0 2px 8px rgba(28, 26, 23, 0.04);
  --shadow-card: 0 4px 20px rgba(28, 26, 23, 0.07);
  --shadow-lift: 0 12px 32px rgba(28, 26, 23, 0.12);
  --shadow-book: 0 12px 36px rgba(0, 0, 0, 0.28), 0 2px 6px rgba(0, 0, 0, 0.15);
  --shadow-book-3d: 0 20px 50px rgba(0, 0, 0, 0.5), 0 5px 15px rgba(0, 0, 0, 0.3);
  
  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 180ms var(--ease-out);
  --transition-base: 280ms var(--ease-out);
  --transition-slow: 500ms var(--ease-out);
}

/* --------------------------------------------------------------------------
   2. Reset & Browser Surface Theming
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  overflow-x: hidden;
  max-width: 100%;
}

html {
  direction: rtl;
  lang: ar;
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  width: 100%;
  position: relative;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 9px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: #C8BFB2;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-bg);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* Text Selection */
::selection {
  background: var(--color-accent);
  color: #FFFFFF;
}

/* Form Caret */
input, textarea {
  caret-color: var(--color-accent);
}

/* Focus Rings */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

body {
  min-height: 100vh;
  line-height: 1.8;
  overflow-x: hidden;
  background-color: var(--color-bg);
  background-image: radial-gradient(rgba(28, 26, 23, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --------------------------------------------------------------------------
   3. Typography Utility Classes
   -------------------------------------------------------------------------- */
.font-display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.font-editorial {
  font-family: var(--font-editorial);
  line-height: 1.45;
}

.text-accent {
  color: var(--color-accent);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-gold {
  color: var(--color-gold);
}

/* --------------------------------------------------------------------------
   4. Layout Containers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding: 96px 32px;
  position: relative;
}

.section-dark {
  background-color: var(--color-dark);
  color: var(--color-dark-text);
  background-image: radial-gradient(rgba(245, 244, 240, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

/* Clean Editorial Section Heading */
.section-header {
  margin-bottom: var(--space-12);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  position: relative;
  display: inline-block;
}

.section-dark .section-title {
  color: var(--color-dark-text);
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background-color: var(--color-accent);
  margin-top: var(--space-3);
  border-radius: 2px;
}

.section-desc {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  max-width: 65ch;
  line-height: 1.7;
}

.section-dark .section-desc {
  color: var(--color-dark-muted);
}

/* --------------------------------------------------------------------------
   5. Header & Fixed Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  background-color: rgba(246, 243, 238, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: all var(--transition-base);
}

.site-header.scrolled {
  background-color: rgba(246, 243, 238, 0.98);
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.05);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-monogram {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background-color: var(--color-text);
  color: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  border: 1px solid var(--color-accent);
  transition: transform var(--transition-fast);
}

.brand-logo:hover .brand-monogram {
  transform: rotate(-6deg) scale(1.05);
}

.brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-2) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.btn-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  background-color: rgba(28, 26, 23, 0.04);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  color: var(--color-accent);
  background-color: rgba(192, 57, 43, 0.1);
  transform: translateY(-2px);
}

.btn-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.mobile-nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-fast);
}

/* --------------------------------------------------------------------------
   6. Hero Section (Murakami-style Monumental Editorial)
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: calc(72px + var(--space-12));
  padding-bottom: var(--space-16);
  min-height: min(85vh, 760px);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-text-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.hero-super-title {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.04em;
  padding: 6px 14px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: fit-content;
}

.hero-super-title::before {
  content: '▪';
  font-size: 11px;
  color: var(--color-accent);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-mega);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.hero-tagline {
  font-family: var(--font-editorial);
  font-size: clamp(1.2rem, 2.1vw, 1.65rem);
  font-style: normal;
  color: var(--color-text-secondary);
  line-height: 1.5;
  padding-block: var(--space-1);
}

.hero-stats-row {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-2);
}

/* Primary Literary Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px 28px;
  background-color: var(--color-text);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: all var(--transition-fast);
  border: 1px solid var(--color-text);
}

.btn-primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px 24px;
  background-color: transparent;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  border: 1.5px solid var(--color-border);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--color-text);
  background-color: rgba(28, 26, 23, 0.03);
  transform: translateY(-2px);
}

/* Hero Portrait (Film Strip & Clean Frame) */
.hero-image-frame {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-film-wrapper {
  position: relative;
  max-width: 420px;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: none;
  background-color: #000000;
  padding: 10px;
  border: 1px solid rgba(28, 26, 23, 0.12);
  transition: transform var(--transition-slow);
}

.hero-film-wrapper:hover {
  transform: scale(1.02) rotate(1deg);
}

.hero-film-wrapper img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius-sm);
  filter: contrast(1.06) brightness(0.96);
}

.hero-frame-tag {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: rgba(20, 18, 16, 0.92);
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: #FFFFFF;
  font-size: var(--text-xs);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* --------------------------------------------------------------------------
   7. About Me & YouTube Insights Section
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: var(--space-16);
  align-items: start;
}

.bio-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-10);
  box-shadow: none;
}

.bio-card::before {
  content: '“';
  position: absolute;
  top: -15px;
  right: 25px;
  font-family: var(--font-editorial);
  font-size: 5rem;
  color: var(--color-accent);
  line-height: 1;
  opacity: 0.25;
}

.bio-text-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  font-size: var(--text-md);
  color: var(--color-text);
  line-height: 1.85;
}

.bio-text-lead {
  font-family: var(--font-editorial);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.5;
}

.bio-signature {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bio-signature-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
}

.bio-signature-role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* YouTube Videos Grid */
.youtube-section-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.youtube-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.youtube-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.yt-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.yt-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: #D4CABF;
}

.yt-thumb-wrapper {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: #000;
  overflow: hidden;
}

.yt-thumb-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.yt-card:hover .yt-thumb-wrapper img {
  transform: scale(1.05);
}

.yt-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0.85;
  transition: opacity var(--transition-fast), background var(--transition-fast);
}

.yt-play-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  transition: transform var(--transition-fast);
}

.yt-card:hover .yt-play-icon {
  transform: scale(1.15);
}

.yt-card:hover .yt-play-btn {
  opacity: 1;
  background: rgba(0, 0, 0, 0.45);
}

.yt-info {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex-grow: 1;
  justify-content: space-between;
}

.yt-title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.yt-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--space-2);
}

/* --------------------------------------------------------------------------
   8. Digital Footprint / Social Hub Cards
   -------------------------------------------------------------------------- */
.social-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.social-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.social-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  background: var(--color-border);
  transition: background var(--transition-fast);
}

.social-card.yt::before { background: #FF0000; }
.social-card.gr::before { background: #553B08; }
.social-card.ig::before { background: #E1306C; }

.social-card:hover,
.social-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.social-card:active {
  transform: translateY(-1px);
}

.social-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.social-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-card.yt .social-icon-box { background: rgba(255, 0, 0, 0.08); color: #FF0000; }
.social-card.gr .social-icon-box { background: rgba(85, 59, 8, 0.08); color: #553B08; }
.social-card.ig .social-icon-box { background: rgba(225, 48, 108, 0.08); color: #E1306C; }

.social-icon-box svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.social-handle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-family: monospace;
  direction: ltr;
}

.social-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.social-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.social-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.social-cta svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  transition: transform var(--transition-fast);
}

.social-card:hover .social-cta,
.social-card:focus-visible .social-cta {
  color: var(--color-accent);
}

.social-card:hover .social-cta svg,
.social-card:focus-visible .social-cta svg {
  transform: translateX(-4px);
}

/* --------------------------------------------------------------------------
   9. Currently Reading Section (Compact Multi-Book Carousel & Side-by-Side)
   -------------------------------------------------------------------------- */
.currently-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.currently-nav-arrows {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.currently-arrow-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: var(--shadow-subtle);
}

.currently-arrow-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #FFFFFF;
  transform: scale(1.06);
}

.currently-arrow-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.currently-reading-track {
  display: flex;
  gap: var(--space-6);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: var(--space-2) var(--space-1) var(--space-4);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
  align-items: stretch;
}

.currently-reading-track::-webkit-scrollbar {
  height: 6px;
}

.currently-reading-track::-webkit-scrollbar-track {
  background: transparent;
}

.currently-reading-track::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-sm);
}

/* 1 book: centered compact card */
.currently-reading-track[data-count="1"] {
  justify-content: center;
}
.currently-reading-track[data-count="1"] .currently-reading-card {
  max-width: 680px;
  flex: 0 1 680px;
}

/* 2 books: side by side */
.currently-reading-track[data-count="2"] .currently-reading-card {
  flex: 1 1 calc(50% - var(--space-3));
  min-width: 420px;
}

/* 3+ books: scrollable items */
.currently-reading-track .currently-reading-card {
  flex: 0 0 520px;
  min-width: 400px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  scroll-snap-align: start;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.currently-reading-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.currently-card-body {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: var(--space-6);
  align-items: start;
  height: 100%;
}

.reading-badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  width: fit-content;
  gap: var(--space-2);
  padding: 6px 14px;
  background: var(--color-bg-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: var(--space-6);
}

.reading-badge.compact {
  padding: 4px 10px;
  font-size: var(--text-2xs);
  margin-bottom: var(--space-1);
}

.reading-badge-marker {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Tactile 3D Physical Book Rendering */
.book-cover-3d-wrapper {
  perspective: 1000px;
  display: flex;
  justify-content: center;
}

.book-volume {
  position: relative;
  width: 240px;
  aspect-ratio: 2 / 3;
  border-radius: 3px 8px 8px 3px;
  box-shadow: var(--shadow-book);
  transform-style: preserve-3d;
  transition: transform var(--transition-base);
  cursor: pointer;
}

.book-volume:hover {
  transform: rotateY(-12deg) translateY(-6px);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35);
}

.book-volume.compact {
  width: 130px;
  aspect-ratio: 2 / 3;
  border-radius: 2px 6px 6px 2px;
  box-shadow: var(--shadow-book);
}

.book-volume.compact:hover {
  transform: rotateY(-10deg) translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
}

.book-volume img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 3px 8px 8px 3px;
}

.book-volume.compact img {
  border-radius: 2px 6px 6px 2px;
}

/* Book physical spine shading */
.book-volume::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 18px;
  background: linear-gradient(to left, rgba(255,255,255,0.2), rgba(0,0,0,0.2) 60%, transparent);
  border-radius: 3px 0 0 3px;
  pointer-events: none;
}

.book-volume.compact::before {
  width: 12px;
}

/* Book page edges (left side in RTL) */
.book-volume::after {
  content: '';
  position: absolute;
  top: 4px;
  left: -8px;
  bottom: 4px;
  width: 8px;
  background: #E5DFC9;
  transform: rotateY(90deg) translateX(4px);
  transform-origin: right center;
  box-shadow: inset -2px 0 3px rgba(0,0,0,0.2);
}

.book-volume.compact::after {
  top: 3px;
  left: -5px;
  bottom: 3px;
  width: 5px;
  transform: rotateY(90deg) translateX(3px);
}

.currently-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.currently-info.compact {
  gap: var(--space-2);
  min-width: 0;
  height: 100%;
}

.currently-title {
  font-family: var(--font-editorial);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.currently-title.compact {
  font-size: 1.25rem;
  line-height: 1.35;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.currently-author {
  font-size: var(--text-md);
  color: var(--color-accent);
  font-weight: 600;
}

.currently-author.compact {
  font-size: var(--text-xs);
  margin: 0;
}

.currently-desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 68ch;
}

.currently-desc.compact {
  font-size: var(--text-xs);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: var(--space-1) 0;
}

.currently-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.currently-meta-row.compact {
  padding-top: var(--space-2);
  gap: var(--space-3);
  font-size: var(--text-2xs);
  flex-wrap: wrap;
  margin-top: auto;
}

.currently-actions {
  margin-top: var(--space-3);
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--text-xs);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

/* --------------------------------------------------------------------------
   10. 5-Star Books — Responsive 3D Perspective Slider
   -------------------------------------------------------------------------- */
.slider-container-3d {
  position: relative;
  width: 100%;
  padding-block: var(--space-8);
  overflow: hidden;
}

.slider-stage-3d {
  perspective: 1200px;
  perspective-origin: 50% 45%;
  height: 540px;
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slider-track-3d {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform-style: preserve-3d;
}

.slider-book-card {
  position: absolute;
  width: 270px;
  aspect-ratio: 2 / 3;
  border-radius: 4px 10px 10px 4px;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.65s ease,
              filter 0.65s ease,
              box-shadow 0.65s ease;
  user-select: none;
  -webkit-user-select: none;
}

.slider-book-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px 10px 10px 4px;
  box-shadow: var(--shadow-book-3d);
}

/* 3D Spine and page effect */
.slider-book-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 20px;
  background: linear-gradient(to left, rgba(255,255,255,0.25), rgba(0,0,0,0.3) 70%, transparent);
  border-radius: 4px 0 0 4px;
  pointer-events: none;
  z-index: 2;
}

.slider-book-card::after {
  content: '';
  position: absolute;
  top: 6px;
  left: -10px;
  bottom: 6px;
  width: 10px;
  background: #E5DFC9;
  transform: rotateY(90deg) translateX(5px);
  transform-origin: right center;
  box-shadow: inset -2px 0 4px rgba(0,0,0,0.3);
}

/* 3D Positions Calculated */
.slider-book-card[data-pos="0"] {
  transform: translateX(0) translateZ(0) rotateY(0deg);
  opacity: 1;
  filter: brightness(1);
  z-index: 10;
}

.slider-book-card[data-pos="1"] {
  transform: translateX(-240px) translateZ(-160px) rotateY(-22deg);
  opacity: 0.85;
  filter: brightness(0.65);
  z-index: 8;
}

.slider-book-card[data-pos="-1"] {
  transform: translateX(240px) translateZ(-160px) rotateY(22deg);
  opacity: 0.85;
  filter: brightness(0.65);
  z-index: 8;
}

.slider-book-card[data-pos="2"] {
  transform: translateX(-430px) translateZ(-320px) rotateY(-36deg);
  opacity: 0.55;
  filter: brightness(0.4);
  z-index: 6;
}

.slider-book-card[data-pos="-2"] {
  transform: translateX(430px) translateZ(-320px) rotateY(36deg);
  opacity: 0.55;
  filter: brightness(0.4);
  z-index: 6;
}

.slider-book-card[data-pos="hidden"] {
  transform: translateX(0) translateZ(-500px) rotateY(0deg);
  opacity: 0;
  pointer-events: none;
  z-index: 1;
}

/* Active Book Details Panel Below Slider (Fixed height to prevent layout shifts) */
.slider-details-box {
  max-width: 680px;
  width: 100%;
  margin-inline: auto;
  text-align: center;
  margin-top: var(--space-6);
  height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-2);
  transition: opacity var(--transition-fast);
  box-sizing: border-box;
}

.slider-active-stars {
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  color: var(--color-accent);
  font-size: var(--text-md);
  flex-shrink: 0;
}

.slider-active-title {
  font-family: var(--font-editorial);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.3;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
  flex-shrink: 0;
  text-align: center;
  padding-inline: var(--space-4);
}

.slider-active-author {
  font-size: var(--text-base);
  color: var(--color-dark-muted);
  height: 22px;
  line-height: 22px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 85%;
  margin: 0;
  flex-shrink: 0;
}

.slider-active-desc {
  font-size: var(--text-sm);
  color: #BEB7AA;
  line-height: 1.6;
  max-width: 60ch;
  height: 66px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0;
  flex-shrink: 0;
  text-align: center;
}

.slider-active-cta-wrap {
  margin-top: auto;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.slider-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 8px 20px;
  font-size: var(--text-sm);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--color-dark-border);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.slider-cta-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #FFFFFF;
}

/* Slider Navigation Controls (Anchored in same spot) */
.slider-controls-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-4);
  height: 48px;
  flex-shrink: 0;
}

.slider-arrow-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-dark-surface);
  color: #FFFFFF;
  border: 1px solid var(--color-dark-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.slider-arrow-btn:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: scale(1.08);
}

.slider-arrow-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.slider-dots-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.slider-counter-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 18px;
  background: var(--color-dark-surface);
  border: 1px solid var(--color-dark-border);
  border-radius: 999px;
  color: #FFFFFF;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  min-width: 90px;
  text-align: center;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-dark-border);
  transition: all var(--transition-fast);
}

.slider-dot.active {
  background: var(--color-accent);
  transform: scale(1.3);
}

/* --------------------------------------------------------------------------
   11. All Books Archive Section
   -------------------------------------------------------------------------- */
.archive-toolbar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
  box-shadow: var(--shadow-subtle);
  flex-wrap: wrap;
}

.filter-chips {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-chip {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  cursor: pointer;
  font-family: inherit;
  user-select: none;
}

.filter-chip:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

.filter-chip.active {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

.archive-search-box {
  position: relative;
  min-width: 260px;
}

.archive-search-input {
  width: 100%;
  padding: 10px 42px 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: var(--text-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.archive-search-input:focus {
  background: #FFFFFF;
  border-color: var(--color-text);
  outline: none;
}

.search-icon-svg {
  position: absolute;
  top: 50%;
  right: 14px;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  fill: var(--color-text-muted);
  pointer-events: none;
}

/* Books Catalog Grid (Reference Horizontal Card Design) */
/* Books Catalog Grid (Reference Horizontal Card Design) */
.books-catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: var(--space-8);
}

.catalog-book-card {
  position: relative;
  background: #FFFFFF;
  border: 1px solid rgba(18, 20, 23, 0.06);
  border-radius: 22px;
  padding: 22px;
  box-shadow: 0 10px 30px rgba(18, 20, 23, 0.05), 0 1px 3px rgba(18, 20, 23, 0.02);
  display: flex;
  gap: 22px;
  align-items: stretch;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  overflow: hidden;
}

.catalog-book-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(18, 20, 23, 0.09), 0 2px 6px rgba(18, 20, 23, 0.04);
  border-color: rgba(18, 20, 23, 0.12);
}

/* Floating Bookmark Ribbon Badge (Top Left in RTL) */
.catalog-bookmark-badge {
  position: absolute;
  top: 18px;
  left: 18px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #FFFFFF;
  box-shadow: 0 4px 14px rgba(18, 20, 23, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  z-index: 3;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.catalog-book-card:hover .catalog-bookmark-badge {
  transform: scale(1.08);
  box-shadow: 0 6px 18px rgba(18, 20, 23, 0.12);
}

.catalog-bookmark-badge svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Book Cover Column (3D Physical Look) */
.catalog-cover-col {
  width: 130px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.catalog-cover-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 3;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 26px -4px rgba(0, 0, 0, 0.24), 0 4px 10px -2px rgba(0, 0, 0, 0.1);
  background: #1C1A17;
  transition: transform var(--transition-base);
}

.catalog-book-card:hover .catalog-cover-wrapper {
  transform: translateY(-3px) rotate(-1.5deg) scale(1.02);
}

.catalog-cover-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Spine 3D Highlight */
.catalog-cover-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 10px;
  background: linear-gradient(to left, rgba(255,255,255,0.3), rgba(0,0,0,0.18) 75%, transparent);
  pointer-events: none;
  z-index: 2;
}

/* Book Content Column */
.catalog-info-col {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-3);
  text-align: right;
  padding-left: 44px; /* Space for absolute bookmark badge */
}

.catalog-header-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: right;
}

.catalog-book-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-align: right;
}

.catalog-book-author {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
  text-align: right;
}

/* Metadata Chips */
.catalog-meta-tags {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 2px;
}

.catalog-meta-tag {
  background: #F4F1EA;
  padding: 3px 9px;
  border-radius: 6px;
  color: var(--color-text-secondary);
  font-size: 0.725rem;
  font-weight: 600;
}

.catalog-meta-lang {
  background: rgba(184, 75, 41, 0.08);
  color: var(--color-accent);
}

/* Ratings */
.catalog-rating-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: 4px;
}

.catalog-stars {
  display: flex;
  gap: 2px;
  color: var(--color-accent);
  font-size: 0.875rem;
  letter-spacing: 1px;
}

.catalog-rating-text {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* Excerpt */
.catalog-excerpt {
  font-size: 0.825rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: 4px;
  text-align: right;
}

/* Footer: Orange Pill Button & Reader Indicator */
.catalog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid rgba(18, 20, 23, 0.06);
  margin-top: auto;
}

.catalog-pill-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 22px;
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-radius: 9999px;
  font-size: 0.825rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(18, 20, 23, 0.15), 0 1px 2px rgba(18, 20, 23, 0.08);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.catalog-pill-btn:hover {
  background-color: var(--color-accent-hover);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(18, 20, 23, 0.2), 0 2px 4px rgba(18, 20, 23, 0.1);
}

.catalog-readers-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.775rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.catalog-readers-star {
  color: var(--color-accent);
}

.catalog-pill-btn svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
  transform: scaleX(-1);
}

.catalog-extra-stat {
  font-size: var(--text-2xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Catalog Load More Container */
.catalog-actions-box {
  display: flex;
  justify-content: center;
  margin-top: var(--space-12);
}

.catalog-empty-notice {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
}

/* --------------------------------------------------------------------------
   12. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-dark);
  color: var(--color-dark-muted);
  border-top: 1px solid var(--color-dark-border);
  padding-block: var(--space-16) var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-dark-border);
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-logo-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-dark-text);
}

.footer-quote {
  font-family: var(--font-editorial);
  font-size: var(--text-md);
  color: var(--color-dark-muted);
  line-height: 1.6;
  max-width: 50ch;
}

.footer-sync-note {
  font-size: var(--text-xs);
  color: var(--color-dark-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: flex-start;
}

.footer-social-row {
  display: flex;
  gap: var(--space-4);
}

.footer-social-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-dark-surface);
  border: 1px solid var(--color-dark-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-dark-text);
  transition: all var(--transition-fast);
}

.footer-social-icon:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.footer-social-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.footer-bottom-bar {
  padding-top: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
}

/* --------------------------------------------------------------------------
   13. Keyframe Animations
   -------------------------------------------------------------------------- */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(192, 57, 43, 0.5); }
  70% { box-shadow: 0 0 0 8px rgba(192, 57, 43, 0); }
  100% { box-shadow: 0 0 0 0 rgba(192, 57, 43, 0); }
}

/* --------------------------------------------------------------------------
   14. Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
    text-align: center;
  }
  
  .hero-tagline {
    border-inline-start: none;
    padding-inline-start: 0;
    margin-inline: auto;
  }
  
  .hero-super-title {
    margin-inline: auto;
  }
  
  .hero-stats-row {
    justify-content: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-image-frame {
    order: -1;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  
  .social-grid {
    grid-template-columns: 1fr;
  }
  
  .currently-reading-track[data-count="2"] .currently-reading-card {
    flex: 0 0 460px;
    min-width: 380px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  /* 1. Eliminate excessive side gutters */
  .section {
    padding-block: 44px;
    padding-inline: 0;
  }
  
  .container,
  .container-narrow {
    padding-inline: 14px;
  }

  .section-header {
    margin-bottom: var(--space-6);
  }

  .section-title {
    font-size: 1.75rem;
  }

  .nav-menu {
    display: none;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }

  /* 2. Hero Section on mobile */
  .hero-section {
    padding-block: 36px;
  }

  .hero-film-wrapper {
    max-width: 220px;
    margin-inline: auto;
  }
  
  /* 3. YouTube 2-in-a-row Grid */
  .youtube-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .yt-card {
    border-radius: 12px;
  }

  .yt-info {
    padding: 8px;
    gap: 4px;
  }

  .yt-title {
    font-size: 0.775rem;
    line-height: 1.35;
    -webkit-line-clamp: 2;
  }

  .yt-meta {
    font-size: 0.675rem;
    padding-top: 4px;
  }

  .yt-play-icon {
    width: 32px;
    height: 32px;
  }

  .yt-play-icon svg {
    width: 14px !important;
    height: 14px !important;
  }

  /* 4. Social Media 2-in-a-row Grid */
  .social-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .social-card {
    padding: 16px 12px;
    border-radius: 14px;
  }

  .social-card:last-child {
    grid-column: span 2;
  }

  .social-card-top {
    margin-bottom: 8px;
  }

  .social-icon-box {
    width: 34px;
    height: 34px;
  }

  .social-icon-box svg {
    width: 16px;
    height: 16px;
  }

  .social-handle {
    font-size: 0.725rem;
  }

  .social-name {
    font-size: 0.95rem;
    margin-bottom: 4px;
  }

  .social-desc {
    font-size: 0.75rem;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
  }

  .social-cta {
    font-size: 0.75rem;
    padding-top: 8px;
  }

  /* 5. Currently Reading Track & Cards on mobile */
  .currently-section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .currently-nav-arrows {
    align-self: flex-end;
  }

  .currently-reading-track {
    gap: var(--space-4);
  }

  .currently-reading-track[data-count="2"] .currently-reading-card,
  .currently-reading-track .currently-reading-card {
    flex: 0 0 88%;
    min-width: 280px;
    padding: var(--space-4);
    scroll-snap-align: center;
  }

  .currently-card-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-4);
  }

  .book-volume.compact {
    width: 140px;
  }

  .currently-info.compact {
    align-items: center;
    width: 100%;
  }

  .reading-badge.compact {
    align-self: center;
  }

  .currently-title.compact {
    font-size: 1.15rem;
  }

  .currently-meta-row.compact {
    justify-content: center;
    width: 100%;
  }

  /* 6. Filter Toolbar & Search Bar (matching reference mockup) */
  .archive-toolbar {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
    margin-bottom: var(--space-6);
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow: hidden;
  }

  .archive-search-box {
    width: 100%;
    min-width: 0;
  }

  .archive-search-input {
    border-radius: 9999px;
    padding: 12px 42px 12px 18px;
    background: #FFFFFF;
    box-shadow: 0 2px 8px rgba(18, 20, 23, 0.05);
    border: 1px solid var(--color-border);
    font-size: 0.85rem;
    box-sizing: border-box;
  }

  .search-icon-svg {
    right: 16px;
    width: 18px;
    height: 18px;
  }

  .filter-chips {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 8px;
    padding-block: 4px 6px;
    justify-content: flex-start;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .filter-chips::-webkit-scrollbar {
    display: none;
  }

  .filter-chip {
    flex-shrink: 0;
    white-space: nowrap;
    padding: 7px 14px;
    font-size: 0.8rem;
    border-radius: 9999px;
    border: 1px solid var(--color-border);
    background: #FFFFFF;
  }

  .filter-chip.active {
    background: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
  }
  
  /* 7. Books Catalog 2-Column Grid (matching reference mockup) */
  .books-catalog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .catalog-book-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 10px 14px;
    gap: 8px;
    border-radius: 18px;
    position: relative;
    text-align: center;
    background: #FFFFFF;
  }

  /* Bookmark Icon (Top Left in RTL) */
  .catalog-bookmark-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(18, 20, 23, 0.08);
  }

  .catalog-bookmark-badge svg {
    width: 14px;
    height: 14px;
  }

  /* Personal Rating Stars (Top Right in RTL) */
  .catalog-rating-row {
    position: absolute;
    top: 10px;
    right: 10px;
    margin: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 2px;
    background: rgba(245, 241, 235, 0.85);
    padding: 3px 8px;
    border-radius: 9999px;
    backdrop-filter: blur(4px);
  }

  .catalog-stars {
    font-size: 0.725rem;
    letter-spacing: 0.5px;
    line-height: 1;
  }
  
  /* Centered 3D Book Cover */
  .catalog-cover-col {
    width: 72%;
    max-width: 115px;
    margin-top: 26px;
    margin-bottom: 2px;
    display: flex;
    justify-content: center;
  }

  .catalog-cover-wrapper {
    width: 100%;
    aspect-ratio: 2 / 3;
    border-radius: 6px;
    box-shadow: 0 10px 20px -4px rgba(0, 0, 0, 0.28), 0 3px 6px -2px rgba(0, 0, 0, 0.12);
  }

  /* Info Column: Title & Author */
  .catalog-info-col {
    width: 100%;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-align: center;
  }

  .catalog-header-content {
    width: 100%;
    align-items: center;
    text-align: center;
    gap: 3px;
  }

  .catalog-book-title {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1.35;
    text-align: center;
    color: var(--color-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.3em;
  }

  .catalog-book-author {
    font-size: 0.725rem;
    color: var(--color-text-muted);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
  }

  /* Hide long desktop-only details to maintain clean mobile 2-column layout */
  .catalog-meta-tags,
  .catalog-excerpt,
  .catalog-readers-indicator {
    display: none;
  }

  .catalog-card-footer {
    width: 100%;
    border-top: none;
    padding-top: 0;
    margin: 0;
  }

  /* Make whole card a clean tap target on mobile, matching reference mockup */
  .catalog-pill-btn {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 1;
    border-radius: 18px;
  }
  
  /* 8. 3D Slider on mobile */
  .slider-container-3d {
    overflow: hidden;
    max-width: 100%;
  }

  .slider-stage-3d {
    height: 440px;
    perspective: 800px;
    overflow: hidden;
    max-width: 100%;
  }
  
  .slider-book-card {
    width: 200px;
  }
  
  .slider-book-card[data-pos="1"] {
    transform: translateX(-140px) translateZ(-120px) rotateY(-20deg);
  }
  
  .slider-book-card[data-pos="-1"] {
    transform: translateX(140px) translateZ(-120px) rotateY(20deg);
  }
  
  .slider-book-card[data-pos="2"],
  .slider-book-card[data-pos="-2"] {
    opacity: 0;
    pointer-events: none;
  }
  
  .slider-details-box {
    height: 280px;
    padding-inline: var(--space-4);
  }

  .slider-active-title {
    font-size: var(--text-xl);
    height: 56px;
  }

  .slider-active-desc {
    font-size: var(--text-xs);
    height: 64px;
  }
}

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