/* ─── Design Tokens ──────────────────────────────────── */
:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem;
  --space-32: 8rem;

  /* Warm sunset palette */
  --color-bg: #FDF8F3;
  --color-surface: #FAF3EB;
  --color-surface-dark: #3B2F2F;
  --color-text: #2A2420;
  --color-text-muted: #6B5B5B;
  --color-text-light: #8A7A6A;
  --color-text-inverse: #FDF8F3;
  --color-accent: #C06030;
  --color-accent-hover: #A04820;
  --color-accent-light: #E8A070;
  --color-warm-glow: #F4D4B0;
  --color-rule: #D4A574;
  --color-border: #E0D0C0;
  --color-hero-bg: #2A2420;
  --color-hero-text: #FDF8F3;

  /* Fonts */
  --font-display: 'Zodiak', 'Georgia', serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;

  /* Widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Transitions */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── Global Typography ──────────────────────────────── */
body { font-family: var(--font-body); }

h1, h2, h3 { font-family: var(--font-display); color: var(--color-text); }
h1 { font-size: var(--text-3xl); font-weight: 500; letter-spacing: -0.02em; }
h2 { font-size: var(--text-xl); font-weight: 500; }
h3 { font-size: var(--text-lg); font-weight: 500; }

/* ─── Header / Nav ───────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(253, 248, 243, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 300ms var(--ease);
}
.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(42, 36, 32, 0.08);
}

.nav-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
}
.nav-logo span { color: var(--color-accent); }

.nav-links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
}
.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.nav-links a:hover { color: var(--color-accent); }

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 300ms var(--ease), opacity 300ms var(--ease);
}

@media (max-width: 768px) {
  .mobile-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100dvh;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-20) var(--space-8);
    gap: var(--space-6);
    transition: right 400ms var(--ease);
    box-shadow: -8px 0 40px rgba(0,0,0,0.1);
    z-index: 200;
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: var(--text-base); }
  .mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(42, 36, 32, 0.4);
    z-index: 150;
    opacity: 0;
    pointer-events: none;
    transition: opacity 400ms var(--ease);
  }
  .mobile-overlay.open { opacity: 1; pointer-events: auto; }
}

/* ─── Hero ───────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-hero-text);
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(42,36,32,0.45) 0%, rgba(42,36,32,0.65) 50%, rgba(42,36,32,0.85) 100%);
  z-index: 1;
}

.hero-content {
  max-width: var(--content-narrow);
  margin: 0 auto;
  position: relative;
  z-index: 2;
  padding: clamp(var(--space-16), 12vw, var(--space-32)) var(--space-6);
}

.hero h1 {
  color: var(--color-hero-text);
  margin-bottom: var(--space-6);
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero .tagline {
  font-size: var(--text-lg);
  color: var(--color-accent-light);
  margin-bottom: var(--space-4);
  font-family: var(--font-display);
  font-style: italic;
}
.hero .subtitle {
  font-size: var(--text-base);
  color: rgba(253, 248, 243, 0.8);
  max-width: 540px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-accent);
  color: var(--color-hero-text);
  padding: var(--space-3) var(--space-8);
  border-radius: 999px;
  font-weight: 600;
  font-size: var(--text-sm);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: background 200ms var(--ease), transform 200ms var(--ease);
}
.hero-cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}
.hero-cta svg { width: 18px; height: 18px; }

/* ─── Section Common ────────────────────────────────── */
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-6);
}
.section-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-8), 5vw, var(--space-16));
}
.section-header h2 {
  margin-bottom: var(--space-3);
}
.section-header .section-rule {
  display: block;
  width: 48px;
  height: 2px;
  background: var(--color-rule);
  margin: var(--space-4) auto 0;
}
.section-header p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 560px;
  margin: var(--space-4) auto 0;
}

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

/* ─── Books Grid ─────────────────────────────────────── */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  max-width: var(--content-wide);
  margin: 0 auto;
}

.book-card {
  text-align: center;
  transition: transform 300ms var(--ease);
}
.book-card:hover { transform: translateY(-4px); }

.book-cover {
  width: 100%;
  max-width: 200px;
  margin: 0 auto var(--space-4);
  border-radius: 4px;
  box-shadow: 0 8px 32px rgba(42, 36, 32, 0.15), 0 2px 8px rgba(42, 36, 32, 0.1);
  transition: box-shadow 300ms var(--ease);
}
.book-card:hover .book-cover {
  box-shadow: 0 16px 48px rgba(42, 36, 32, 0.2), 0 4px 12px rgba(42, 36, 32, 0.12);
}

.book-card h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}
.book-card .book-subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}
.book-card .book-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.book-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  margin-top: var(--space-3);
}
.book-link:hover { color: var(--color-accent-hover); }
.book-link svg { width: 16px; height: 16px; }

/* ─── About Section ──────────────────────────────────── */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
  max-width: var(--content-wide);
  margin: 0 auto;
}

.about-text h2 { margin-bottom: var(--space-4); }
.about-text .rule {
  display: block;
  width: 48px;
  height: 2px;
  background: var(--color-rule);
  margin-bottom: var(--space-6);
}
.about-text p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.7;
}
.about-text p:last-of-type { margin-bottom: 0; }

.about-quote {
  background: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-6) var(--space-8);
  border-radius: 0 8px 8px 0;
}
.about-quote blockquote {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: var(--space-3);
}
.about-quote cite {
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

@media (max-width: 768px) {
  .about-layout { grid-template-columns: 1fr; }
}

/* ─── Series Arc ─────────────────────────────────────── */
.series-arc {
  background: var(--color-surface-dark);
  color: var(--color-text-inverse);
  padding: clamp(var(--space-12), 8vw, var(--space-20)) var(--space-6);
  text-align: center;
}
.series-arc h2 {
  color: var(--color-text-inverse);
  margin-bottom: var(--space-3);
}
.series-arc .section-rule {
  display: block;
  width: 48px;
  height: 2px;
  background: var(--color-accent);
  margin: var(--space-4) auto;
}
.series-arc p {
  color: rgba(253, 248, 243, 0.7);
  max-width: 600px;
  margin: 0 auto var(--space-10);
  line-height: 1.7;
}

.arc-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  max-width: var(--content-wide);
  margin: 0 auto;
  position: relative;
}
.arc-steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  opacity: 0.4;
}

.arc-step {
  position: relative;
  z-index: 1;
}
.arc-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
  color: white;
  font-weight: 700;
  font-size: var(--text-sm);
  margin: 0 auto var(--space-3);
}
.arc-step h3 {
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.arc-step p {
  font-size: var(--text-xs);
  color: rgba(253, 248, 243, 0.5);
  margin: 0 auto;
}

@media (max-width: 768px) {
  .arc-steps { grid-template-columns: 1fr; gap: var(--space-6); }
  .arc-steps::before { display: none; }
  .arc-step { display: flex; align-items: center; gap: var(--space-4); text-align: left; }
  .arc-step .arc-num { flex-shrink: 0; }
  .arc-step div { flex: 1; }
}

/* ─── Connect / CTA Section ──────────────────────────── */
.connect {
  text-align: center;
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-6);
}
.connect-inner {
  max-width: var(--content-narrow);
  margin: 0 auto;
}
.connect h2 { margin-bottom: var(--space-4); }
.connect .rule {
  display: block;
  width: 48px;
  height: 2px;
  background: var(--color-rule);
  margin: 0 auto var(--space-6);
}
.connect p {
  color: var(--color-text-muted);
  margin: 0 auto var(--space-6);
  line-height: 1.7;
}

.connect-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}
.connect-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 1.5px solid var(--color-border);
  border-radius: 999px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: border-color 200ms var(--ease), color 200ms var(--ease), transform 200ms var(--ease);
}
.connect-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}
.connect-link svg { width: 18px; height: 18px; }
.connect-link.primary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}
.connect-link.primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: white;
}

/* ─── Footer ─────────────────────────────────────────── */
.site-footer {
  background: var(--color-surface-dark);
  color: rgba(253, 248, 243, 0.5);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  font-size: var(--text-xs);
}
.site-footer a {
  color: var(--color-accent-light);
  text-decoration: none;
}
.site-footer a:hover { color: var(--color-accent); }
.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}
@media (max-width: 768px) {
  .footer-inner { flex-direction: column; }
}

/* ─── Scroll Animations ──────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}