:root {
  --bg-deep: #0a0a0f;
  --bg-section: #0f0f18;
  --bg-card: #161625;
  --bg-elevated: #1c1c30;
  --gold: #c9a84c;
  --gold-dim: #a08535;
  --gold-glow: rgba(201, 168, 76, 0.15);
  --cream: #f0e6d3;
  --text-primary: #e8e0d4;
  --text-secondary: #9a917f;
  --text-muted: #5c5647;
  --accent-thriller: #c43a3a;
  --accent-romance: #d4638f;
  --accent-scifi: #4a8fd4;
  --accent-fantasy: #8b6cc4;
  --accent-mystery: #4ac4a8;
  --accent-literary: #c4a44a;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --max-width: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 2rem 3rem;
  background: linear-gradient(170deg, #0a0a0f 0%, #12101e 40%, #0f0d1a 100%);
}

.hero-grain {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-nav {
  position: absolute;
  top: 2rem;
  left: 3rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--cream);
  letter-spacing: 0.02em;
}

.logo-accent {
  color: var(--gold);
  font-style: italic;
  font-weight: 400;
}

.hero-content {
  max-width: 800px;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  color: var(--cream);
  margin-bottom: 2rem;
}

.hero-title em {
  color: var(--gold);
  font-weight: 400;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.8;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 3rem;
  right: 3rem;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* CONCEPT */
.concept {
  padding: 8rem 3rem;
  background: var(--bg-section);
  border-top: 1px solid rgba(201, 168, 76, 0.08);
}

.concept-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.concept-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin-bottom: 3rem;
}

.concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.concept-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  color: var(--cream);
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.concept-text p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

.book-stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 2rem;
}

.book {
  padding: 1.2rem 1.8rem;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--cream);
  position: relative;
  border-left: 3px solid var(--gold);
  transition: transform 0.3s ease;
}

.book:hover {
  transform: translateX(8px);
}

.book-1 { background: linear-gradient(135deg, #1a1a2e, #16213e); }
.book-2 { background: linear-gradient(135deg, #1a0a2e, #2a1040); }
.book-3 { background: linear-gradient(135deg, #2e1a0a, #3e2a10); }
.book-4 { background: linear-gradient(135deg, #0a2e1a, #103e2a); }

.book span {
  position: relative;
  z-index: 1;
}

/* GENRES */
.genres {
  padding: 8rem 3rem;
  background: var(--bg-deep);
}

.genres-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.genres-header {
  margin-bottom: 4rem;
}

.genres-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 1rem;
}

.genres-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 500px;
}

.genre-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.genre-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: 8px;
  padding: 2rem;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.genre-card:hover {
  transform: translateY(-4px);
}

.genre-icon {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.genre-thriller .genre-icon { color: var(--accent-thriller); }
.genre-romance .genre-icon { color: var(--accent-romance); }
.genre-scifi .genre-icon { color: var(--accent-scifi); }
.genre-fantasy .genre-icon { color: var(--accent-fantasy); }
.genre-mystery .genre-icon { color: var(--accent-mystery); }
.genre-literary .genre-icon { color: var(--accent-literary); }

.genre-thriller:hover { border-color: var(--accent-thriller); }
.genre-romance:hover { border-color: var(--accent-romance); }
.genre-scifi:hover { border-color: var(--accent-scifi); }
.genre-fantasy:hover { border-color: var(--accent-fantasy); }
.genre-mystery:hover { border-color: var(--accent-mystery); }
.genre-literary:hover { border-color: var(--accent-literary); }

.genre-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 0.5rem;
}

.genre-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* FEATURES */
.features {
  padding: 8rem 3rem;
  background: var(--bg-section);
  border-top: 1px solid rgba(201, 168, 76, 0.08);
}

.features-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.feature-block {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 2rem;
  padding: 3rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  align-items: start;
}

.feature-block:last-child {
  border-bottom: none;
}

.feature-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--gold);
  opacity: 0.3;
  line-height: 1;
}

.feature-content h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 0.75rem;
}

.feature-content p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
}

/* CLOSING */
.closing {
  padding: 10rem 3rem;
  background: var(--bg-deep);
  text-align: center;
  position: relative;
}

.closing-inner {
  max-width: 750px;
  margin: 0 auto;
  position: relative;
}

.closing-accent {
  width: 40px;
  height: 2px;
  background: var(--gold);
  margin: 0 auto 3rem;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--cream);
  line-height: 1.3;
  margin-bottom: 1.5rem;
}

.closing-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  line-height: 1.8;
}

.closing-tag {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--gold);
  font-size: 1.1rem;
}

/* FOOTER */
.site-footer {
  padding: 3rem;
  border-top: 1px solid rgba(255,255,255,0.04);
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cream);
  margin-bottom: 0.5rem;
}

.footer-brand span {
  color: var(--gold);
  font-style: italic;
  font-weight: 400;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.footer-detail {
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.6;
}

/* HERO NAV LINKS */
.hero-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.hero-browse-link {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--gold);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.hero-browse-link:hover {
  opacity: 1;
}

/* HERO CTA BUTTON */
.hero-cta {
  display: inline-block;
  margin-top: 2.5rem;
  padding: 0.85rem 2.2rem;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  background: transparent;
  transition: background 0.25s ease, color 0.25s ease;
}

.hero-cta:hover {
  background: var(--gold);
  color: var(--bg-deep);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding: 2rem 1.5rem; }
  .hero-nav { left: 1.5rem; top: 1.5rem; }
  .hero-scroll-hint { display: none; }
  
  .concept { padding: 5rem 1.5rem; }
  .concept-grid { grid-template-columns: 1fr; gap: 2rem; }
  
  .genres { padding: 5rem 1.5rem; }
  .genre-cards { grid-template-columns: 1fr 1fr; gap: 1rem; }
  
  .features { padding: 5rem 1.5rem; }
  .feature-block { grid-template-columns: 60px 1fr; gap: 1rem; padding: 2rem 0; }
  .feature-number { font-size: 2rem; }
  
  .closing { padding: 6rem 1.5rem; }
  .site-footer { padding: 2rem 1.5rem; }
}

@media (max-width: 480px) {
  .genre-cards { grid-template-columns: 1fr; }
  .feature-block { grid-template-columns: 1fr; }
  .feature-number { font-size: 1.5rem; margin-bottom: -0.5rem; }
}