/* ==========================================================================
   PAGE & PRIME | CS VARMA - MASTER LUXURY STYLESHEET
   Ultra-modern, 3D Interactive, Top 1% Award-Winning Author & Book Experience
   ========================================================================== */

/* --- CSS Reset & Custom Properties --- */
:root {
  /* Color Palette - Midnight Obsidian & Royal Amber (Dark - Default) */
  --bg-primary: #07090e;
  --bg-secondary: #0d121c;
  --bg-tertiary: #131b2a;
  --bg-card: rgba(19, 27, 42, 0.7);
  --bg-card-hover: rgba(26, 37, 57, 0.85);
  --bg-glass: rgba(13, 18, 28, 0.75);
  --bg-glass-elevated: rgba(19, 27, 42, 0.9);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #07090e;

  --accent-gold: #e5a93c;
  --accent-gold-light: #f6ca68;
  --accent-gold-dark: #b8860b;
  --accent-gold-glow: rgba(229, 169, 60, 0.25);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);
  --border-gold: rgba(229, 169, 60, 0.35);

  --gradient-gold: linear-gradient(135deg, #f7d179 0%, #e5a93c 50%, #b8860b 100%);
  --gradient-dark: linear-gradient(180deg, #07090e 0%, #0d121c 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(229, 169, 60, 0.15) 0%, transparent 70%);

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.6);
  --shadow-gold: 0 10px 30px rgba(229, 169, 60, 0.2);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-display: 'Cinzel', serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  --header-height: 80px;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #faf8f5;
  --bg-secondary: #f2eee8;
  --bg-tertiary: #e8e2d8;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-glass: rgba(250, 248, 245, 0.85);
  --bg-glass-elevated: rgba(255, 255, 255, 0.95);

  --text-primary: #1e1b18;
  --text-secondary: #574f49;
  --text-muted: #8c827a;
  --text-inverse: #f8fafc;

  --accent-gold: #b8860b;
  --accent-gold-light: #d4a017;
  --accent-gold-dark: #8c6508;
  --accent-gold-glow: rgba(184, 134, 11, 0.2);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.15);
  --border-gold: rgba(184, 134, 11, 0.3);

  --gradient-gold: linear-gradient(135deg, #d4a017 0%, #b8860b 50%, #8c6508 100%);
  --gradient-dark: linear-gradient(180deg, #faf8f5 0%, #f2eee8 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.6) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(184, 134, 11, 0.12) 0%, transparent 70%);

  --shadow-sm: 0 4px 12px rgba(60, 45, 30, 0.06);
  --shadow-md: 0 10px 30px rgba(60, 45, 30, 0.1);
  --shadow-lg: 0 20px 50px rgba(60, 45, 30, 0.15);
  --shadow-gold: 0 10px 30px rgba(184, 134, 11, 0.18);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  position: relative;
}

/* Background Ambient Glows */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 600px;
  background: var(--gradient-glow);
  pointer-events: none;
  z-index: 0;
}

/* Scroll progress bar */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient-gold);
  z-index: 9999;
  transition: width 0.1s linear;
}

/* Selection */
::selection {
  background: var(--accent-gold);
  color: var(--text-inverse);
}

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

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

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

/* Typography Helpers */
.gold-text {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-gold);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(229, 169, 60, 0.1);
  border: 1px solid var(--border-gold);
  margin-bottom: 16px;
}

.section-tag svg {
  width: 14px;
  height: 14px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.section-desc {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 50px;
  line-height: 1.7;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  height: 72px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-gold);
  box-shadow: 0 0 15px var(--accent-gold-glow);
  transition: transform var(--transition-fast);
}

.brand-logo:hover .brand-avatar {
  transform: scale(1.05);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-gold);
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-gold);
  transition: width var(--transition-normal);
  border-radius: var(--radius-full);
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  position: relative;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  color: var(--text-primary);
  background: var(--border-medium);
  border-color: var(--border-gold);
  transform: translateY(-2px);
}

.icon-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-gold);
  color: var(--text-inverse);
  font-size: 0.7rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Soundscape Equalizer Waves */
.soundscape-waves {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 16px;
}

.soundscape-waves span {
  width: 3px;
  height: 100%;
  background-color: currentColor;
  border-radius: 2px;
  animation: waveAnim 1s ease-in-out infinite alternate;
}

.soundscape-waves span:nth-child(1) { height: 40%; animation-delay: 0.1s; }
.soundscape-waves span:nth-child(2) { height: 100%; animation-delay: 0.3s; }
.soundscape-waves span:nth-child(3) { height: 60%; animation-delay: 0.2s; }

.soundscape-btn.muted .soundscape-waves span {
  animation: none;
  height: 3px;
}

@keyframes waveAnim {
  0% { transform: scaleY(0.3); }
  100% { transform: scaleY(1); }
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--gradient-gold);
  color: var(--text-inverse);
  font-weight: 700;
  font-size: 0.88rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-gold);
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 8px 25px rgba(229, 169, 60, 0.35);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Mobile Nav Drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background: var(--bg-glass-elevated);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border-bottom: 1px solid var(--border-medium);
  padding: 30px 24px;
  flex-direction: column;
  gap: 20px;
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-normal);
  z-index: 999;
}

.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-link {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 10px 0;
}

.mobile-nav-link.active, .mobile-nav-link:hover {
  color: var(--accent-gold);
}

/* ==========================================================================
   HERO SECTION - 3D INTERACTIVE HARDCOVER EXPERIENCE
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  padding: 60px 0 80px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5.5vw, 4.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-title .title-small {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(1.2rem, 2.2vw, 1.8rem);
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--accent-gold);
  margin-bottom: 18px;
}

.hero-lead {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 580px;
  margin-bottom: 36px;
}

/* Hero Action Buttons Matrix */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 48px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  background: var(--gradient-gold);
  color: var(--text-inverse);
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-gold);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-3px);
  filter: brightness(1.1);
  box-shadow: 0 12px 35px rgba(229, 169, 60, 0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-gold);
  color: var(--accent-gold);
  transform: translateY(-2px);
}

.btn-deal {
  position: relative;
  overflow: hidden;
  border-color: rgba(229, 169, 60, 0.4);
}

.btn-deal::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(229, 169, 60, 0.2), transparent);
  animation: shineBtn 3s infinite;
}

@keyframes shineBtn {
  0% { left: -100%; }
  20% { left: 100%; }
  100% { left: 100%; }
}

/* Quick Author Trust Stats */
.hero-trust-bar {
  display: flex;
  align-items: center;
  gap: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.trust-item strong {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-serif);
}

.trust-item span {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* --- 3D WebGL Canvas Stage --- */
.hero-3d-stage {
  position: relative;
  width: 100%;
  height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#hero-webgl-canvas {
  width: 100%;
  height: 100%;
  outline: none;
  cursor: grab;
}

#hero-webgl-canvas:active {
  cursor: grabbing;
}

/* 3D Floating Control Bar */
.stage-controls {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-glass-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  backdrop-filter: blur(16px);
  z-index: 10;
  box-shadow: var(--shadow-md);
  white-space: nowrap;
}

.stage-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.stage-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

.stage-btn.active {
  color: var(--accent-gold);
  background: rgba(229, 169, 60, 0.15);
}

/* 3D Cover Switcher Pills */
.cover-switcher-panel {
  position: absolute;
  top: 15px;
  right: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 10;
}

.cover-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 6px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  backdrop-filter: blur(12px);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.cover-pill img {
  width: 26px;
  height: 34px;
  object-fit: cover;
  border-radius: 4px;
}

.cover-pill:hover, .cover-pill.active {
  border-color: var(--accent-gold);
  color: var(--text-primary);
  background: var(--bg-card-hover);
  transform: translateX(-4px);
}

/* 3D Interactive Badge */
.hero-3d-hint {
  position: absolute;
  top: 15px;
  left: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--accent-gold);
  background: rgba(229, 169, 60, 0.12);
  border: 1px solid var(--border-gold);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  backdrop-filter: blur(8px);
}

/* ==========================================================================
   DISCOVERY & RECOMMENDER QUIZ ("Find Your Ideal Read")
   ========================================================================== */
.recommender-section {
  padding: 80px 0;
  position: relative;
}

.recommender-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.recommender-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--accent-gold-glow) 0%, transparent 70%);
  pointer-events: none;
}

.quiz-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 36px;
}

.quiz-step {
  display: none;
  animation: fadeIn 0.4s ease forwards;
}

.quiz-step.active {
  display: block;
}

.quiz-question-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 28px;
}

.quiz-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.quiz-option-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.quiz-option-btn:hover {
  border-color: var(--accent-gold);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.quiz-option-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.quiz-option-title {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.quiz-option-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Quiz Recommendation Result Card */
.quiz-result-container {
  display: none;
  animation: scaleIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.quiz-result-container.active {
  display: block;
}

.result-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 36px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-gold);
}

.result-book-cover {
  width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.result-card:hover .result-book-cover {
  transform: scale(1.03) rotate(-1deg);
}

.result-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 8px;
}

.result-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.result-reason {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   DYNAMIC BOOK CATALOGUE SECTION
   ========================================================================== */
.catalogue-section {
  padding: 100px 0;
  position: relative;
}

.catalogue-controls {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 48px;
}

/* Search Bar */
.search-wrapper {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: 16px 50px 16px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-glow);
}

.search-icon {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Category Filter Tabs & Sorter */
.filters-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.filter-tabs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-tab {
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.filter-tab.active {
  background: var(--accent-gold);
  color: var(--text-inverse);
  border-color: var(--accent-gold);
  font-weight: 700;
  box-shadow: 0 4px 15px var(--accent-gold-glow);
}

.sort-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.sort-select {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  outline: none;
  cursor: pointer;
}

/* Books Grid */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 32px;
}

/* 3D Perspective Book Card */
.book-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  backdrop-filter: blur(16px);
  transform-style: preserve-3d;
  perspective: 1000px;
}

.book-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-lg);
}

/* 3D Book Presentation Area inside card */
.book-visual-wrap {
  position: relative;
  width: 100%;
  height: 290px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  cursor: pointer;
}

.book-visual-wrap::before {
  content: '';
  position: absolute;
  bottom: 10px;
  width: 70%;
  height: 20px;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.45) 0%, transparent 70%);
  filter: blur(6px);
  transition: transform var(--transition-normal);
}

.book-card:hover .book-visual-wrap::before {
  transform: scale(0.9);
  opacity: 0.6;
}

.card-book-img {
  width: 170px;
  height: 240px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: -8px 12px 24px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
  transform: rotateY(-12deg) rotateX(5deg);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.book-card:hover .card-book-img {
  transform: rotateY(0deg) rotateX(0deg) translateY(-8px);
  box-shadow: 0 20px 35px rgba(0, 0, 0, 0.5), 0 0 15px var(--accent-gold-glow);
}

/* 3D Inspect Hover Badge */
.book-inspect-pill {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  opacity: 0;
  pointer-events: none;
  padding: 8px 16px;
  background: var(--bg-glass-elevated);
  border: 1px solid var(--accent-gold);
  border-radius: var(--radius-full);
  color: var(--accent-gold);
  font-size: 0.82rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
  z-index: 5;
}

.book-visual-wrap:hover .book-inspect-pill {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* Card Metadata */
.card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(229, 169, 60, 0.15);
  border: 1px solid var(--border-gold);
  color: var(--accent-gold);
}

.card-wishlist-toggle {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  z-index: 5;
}

.card-wishlist-toggle:hover {
  color: #ef4444;
  border-color: #ef4444;
  transform: scale(1.1);
}

.card-wishlist-toggle.in-wishlist {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
}

.card-info {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-category {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 6px;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.3;
}

.card-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
  line-height: 1.4;
}

.card-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 20px;
}

.stars {
  display: flex;
  align-items: center;
  gap: 2px;
  color: #f59e0b;
}

.rating-count {
  font-weight: 400;
  color: var(--text-muted);
}

/* Card Button Group */
.card-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  margin-top: auto;
}

.btn-card-amazon {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--gradient-gold);
  color: var(--text-inverse);
  font-weight: 700;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-card-amazon:hover {
  filter: brightness(1.1);
  box-shadow: 0 4px 15px var(--accent-gold-glow);
}

.btn-card-inspect {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  background: var(--border-subtle);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-card-inspect:hover {
  border-color: var(--border-gold);
  color: var(--accent-gold);
  background: rgba(229, 169, 60, 0.1);
}

/* ==========================================================================
   ABOUT THE AUTHOR & PHILOSOPHY SECTION
   ========================================================================== */
.about-section {
  padding: 110px 0;
  position: relative;
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 70px;
  align-items: center;
}

.about-visual-column {
  position: relative;
}

.about-image-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-medium);
}

.about-main-img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about-image-card:hover .about-main-img {
  transform: scale(1.03);
}

.about-floating-quote-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--bg-glass-elevated);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
  max-width: 300px;
}

.about-floating-quote-badge p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.about-floating-quote-badge span {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--accent-gold);
  text-transform: uppercase;
}

.about-text h2 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
}

.about-intro-lead {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--accent-gold);
  line-height: 1.6;
  margin-bottom: 20px;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

/* Author Pillars */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 36px 0;
}

.pillar-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 18px 16px;
  text-align: center;
}

.pillar-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 8px 0 4px;
  color: var(--text-primary);
}

.pillar-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.4;
}

/* Interactive Quote of the Day Generator */
.quote-box {
  background: var(--bg-card);
  border-left: 4px solid var(--accent-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 24px;
  margin-top: 32px;
  position: relative;
}

.quote-content {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.quote-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.quote-author {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.quote-btn-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.quote-btn {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--border-subtle);
  transition: all var(--transition-fast);
}

.quote-btn:hover {
  color: var(--text-primary);
  background: var(--border-medium);
}

/* ==========================================================================
   INTERACTIVE TIMELINE & MILESTONES
   ========================================================================== */
.timeline-section {
  padding: 100px 0;
  position: relative;
}

.timeline-track {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline-track::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(180deg, transparent, var(--accent-gold), transparent);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 24px 40px;
  box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  text-align: left;
}

.timeline-node {
  position: absolute;
  top: 36px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-gold);
  box-shadow: 0 0 15px var(--accent-gold-glow);
  border: 3px solid var(--bg-primary);
}

.timeline-item:nth-child(odd) .timeline-node {
  right: -8px;
}

.timeline-item:nth-child(even) .timeline-node {
  left: -8px;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(12px);
  transition: all var(--transition-fast);
}

.timeline-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.timeline-year {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-gold);
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.timeline-heading {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.timeline-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   READER REVIEWS & TESTIMONIALS
   ========================================================================== */
.reviews-section {
  padding: 90px 0;
  background: var(--bg-secondary);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(16px);
  transition: all var(--transition-fast);
}

.review-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-md);
}

.review-stars {
  display: flex;
  gap: 3px;
  color: #f59e0b;
  margin-bottom: 16px;
}

.review-text {
  font-size: 1.02rem;
  color: var(--text-primary);
  line-height: 1.65;
  font-style: italic;
  margin-bottom: 24px;
}

.review-author-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.review-author-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.review-author-badge {
  font-size: 0.72rem;
  color: var(--accent-gold);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   CONTACT & INQUIRY SECTION
   ========================================================================== */
.contact-section {
  padding: 100px 0;
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 70px;
  align-items: start;
}

.contact-info h2 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}

.contact-lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
}

.contact-perks-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.perk-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.perk-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent-gold);
  box-shadow: 0 4px 15px var(--accent-gold-glow);
}

.perk-details strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.perk-details span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Contact Form Box */
.contact-form-box {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 44px;
  backdrop-filter: blur(25px);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.form-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.form-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-label span {
  color: var(--accent-gold);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-fast);
}

.form-control:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-glow);
  background: var(--bg-tertiary);
}

textarea.form-control {
  min-height: 130px;
  resize: vertical;
}

.word-counter {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: right;
  margin-top: 6px;
}

.word-counter.warning {
  color: #ef4444;
}

.submit-btn {
  width: 100%;
  padding: 16px;
  background: var(--gradient-gold);
  color: var(--text-inverse);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: var(--shadow-gold);
  transition: all var(--transition-fast);
}

.submit-btn:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(229, 169, 60, 0.4);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-terms {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 14px;
}

/* Form Feedback States */
.form-feedback {
  display: none;
  padding: 16px;
  border-radius: var(--radius-sm);
  margin-top: 20px;
  text-align: center;
  font-size: 0.92rem;
  font-weight: 600;
}

.form-feedback.success {
  display: block;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #4ade80;
}

.form-feedback.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 80px 0 30px;
  color: var(--text-secondary);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 50px;
  margin-bottom: 60px;
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 18px 0 24px;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-gold);
}

.newsletter-form {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.newsletter-input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
}

.newsletter-input:focus {
  border-color: var(--accent-gold);
}

.newsletter-btn {
  padding: 12px 18px;
  background: var(--accent-gold);
  color: var(--text-inverse);
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.newsletter-btn:hover {
  filter: brightness(1.1);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 30px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.affiliate-notice {
  max-width: 650px;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--text-muted);
}

/* ==========================================================================
   MODALS: 3D BOOK INSPECTOR & VIRTUAL SAMPLE READER
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background: var(--bg-glass-elevated);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 960px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(30px) scale(0.96);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-container {
  transform: translateY(0) scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--border-subtle);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--border-medium);
  color: var(--accent-gold);
  transform: rotate(90deg);
}

/* Inspector Inner Layout */
.inspector-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  min-height: 520px;
}

.inspector-3d-stage {
  background: var(--bg-primary);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  overflow: hidden;
}

#inspector-canvas {
  width: 100%;
  height: 100%;
  cursor: grab;
}

#inspector-canvas:active {
  cursor: grabbing;
}

.inspector-stage-hint {
  position: absolute;
  bottom: 16px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-gold);
  background: rgba(0, 0, 0, 0.6);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  pointer-events: none;
}

.inspector-details {
  padding: 44px;
  display: flex;
  flex-direction: column;
}

.inspector-category {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-gold);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.inspector-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.2;
}

.inspector-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.inspector-tabs {
  display: flex;
  gap: 12px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 20px;
}

.inspector-tab {
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.inspector-tab.active {
  color: var(--accent-gold);
  border-bottom-color: var(--accent-gold);
}

.inspector-tab-pane {
  display: none;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex-grow: 1;
}

.inspector-tab-pane.active {
  display: block;
}

/* Sample Page Excerpt Box */
.excerpt-box {
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent-gold);
  padding: 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 16px;
  max-height: 200px;
  overflow-y: auto;
}

.excerpt-title {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--accent-gold);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.inspector-specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.spec-cell strong {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.spec-cell span {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
}

.inspector-actions {
  display: flex;
  gap: 14px;
  margin-top: auto;
  padding-top: 20px;
}

/* ==========================================================================
   WISHLIST SLIDE-OVER DRAWER
   ========================================================================== */
.wishlist-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 440px;
  height: 100vh;
  background: var(--bg-glass-elevated);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border-left: 1px solid var(--border-medium);
  box-shadow: var(--shadow-lg);
  z-index: 2100;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

.wishlist-drawer.open {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.drawer-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.drawer-items-list {
  flex-grow: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.drawer-empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.drawer-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px;
  position: relative;
}

.drawer-item img {
  width: 48px;
  height: 68px;
  object-fit: cover;
  border-radius: 4px;
}

.drawer-item-info {
  flex-grow: 1;
}

.drawer-item-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.drawer-item-cat {
  font-size: 0.75rem;
  color: var(--accent-gold);
}

.drawer-item-del {
  color: var(--text-muted);
  padding: 8px;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.drawer-item-del:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

.drawer-footer {
  padding: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  background: var(--bg-glass-elevated);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(16px);
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition-normal);
  pointer-events: auto;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Soundscape Overlay Controls Panel */
.soundscape-panel {
  position: fixed;
  bottom: 80px;
  right: 24px;
  background: var(--bg-glass-elevated);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
  z-index: 1050;
  display: none;
  flex-direction: column;
  gap: 12px;
  width: 260px;
}

.soundscape-panel.open {
  display: flex;
  animation: scaleIn 0.25s ease forwards;
}

.sound-track-select {
  display: flex;
  gap: 6px;
}

.sound-track-btn {
  flex: 1;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.sound-track-btn.active {
  background: var(--accent-gold);
  color: var(--text-inverse);
  border-color: var(--accent-gold);
}

.volume-slider-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.volume-slider {
  flex: 1;
  accent-color: var(--accent-gold);
}

/* Keyframe Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-content {
    margin: 0 auto;
    max-width: 700px;
  }

  .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-trust-bar {
    justify-content: center;
  }

  .hero-3d-stage {
    height: 480px;
  }

  .about-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .about-image-card {
    max-width: 550px;
    margin: 0 auto;
  }

  .inspector-layout {
    grid-template-columns: 1fr;
  }

  .inspector-3d-stage {
    height: 320px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }

  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .timeline-track::before {
    left: 20px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 50px;
    padding-right: 10px;
    text-align: left !important;
  }

  .timeline-item:nth-child(even) {
    left: 0;
  }

  .timeline-node {
    left: 12px !important;
  }

  .pillars-grid {
    grid-template-columns: 1fr;
  }

  .result-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .result-actions {
    justify-content: center;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.3rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .recommender-card, .contact-form-box {
    padding: 24px 18px;
  }

  .inspector-details {
    padding: 24px 18px;
  }
}