:root {
  --bg: #05070b;
  --bg-alt: #0b1018;
  --panel: #131826;
  --accent: #f1c07a;
  --accent-soft: rgba(241, 192, 122, 0.18);
  --text: #f4f5f7;
  --muted: #adb5c0;
  --border: #232a3a;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Georgia", "Times New Roman", serif;
  --max-width: 1080px;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: radial-gradient(circle at top, #111827 0, #05070b 55%);
  color: var(--text);
  font-family: var(--font-main);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container.narrow {
  max-width: 760px;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  background: linear-gradient(to bottom, #0b1018, #05070b);
}

.section-intro {
  max-width: 640px;
  color: var(--muted);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 7, 11, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.logo a {
  font-family: var(--font-heading);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: none;
}

.main-nav a {
  margin-left: 1.5rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent);
}

/* Hero */

.hero {
  padding: 4.5rem 0 4rem;
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: minmax(0, 3fr) minmax(0, 4fr);
  align-items: center;
}

.hero-cover img {
  display: block;
  width: 100%;
  max-width: 340px;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.75);
}

.hero-text h1 {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.hero-meta {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.hero-meta li + li {
  margin-top: 0.25rem;
}

.hero-cta .btn + .btn {
  margin-left: 0.75rem;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn.primary {
  background: var(--accent);
  color: #1b1308;
}

.btn.primary:hover {
  background: #ffd495;
}

.btn.ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn.ghost:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

/* Headings */

h2,
h3 {
  font-family: var(--font-heading);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h2 {
  font-size: 1.6rem;
  margin-top: 0;
}

h3 {
  font-size: 1.1rem;
}

/* Layout blocks */

.two-column {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: minmax(0, 3.2fr) minmax(0, 2.4fr);
  align-items: flex-start;
}

.book-facts,
.author-meta {
  background: rgba(10, 13, 22, 0.9);
  border-radius: 1rem;
  padding: 1.5rem 1.5rem 1.25rem;
  border: 1px solid var(--border);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.7);
}

.book-facts ul,
.author-meta ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.book-facts li + li,
.author-meta li + li {
  margin-top: 0.35rem;
}

.small {
  font-size: 0.8rem;
  color: var(--muted);
}

/* Other books grid */

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2.2rem;
  margin-top: 2rem;
}

.book-card {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 1.3rem;
  background: rgba(9, 12, 20, 0.9);
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
}

.book-card-cover img {
  width: 100%;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
}

.book-card-tagline {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* Newsletter */

.newsletter-form {
  max-width: 540px;
  margin-top: 1.5rem;
}

.newsletter-form label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.newsletter-row {
  display: flex;
  gap: 0.8rem;
  margin-top: 0.5rem;
}

.newsletter-row input {
  flex: 1;
  padding: 0.7rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #05070b;
  color: var(--text);
  font-size: 0.95rem;
}

.newsletter-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-soft);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  background: #05070b;
  padding: 2.5rem 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  align-items: flex-start;
}

.footer-meta {
  font-size: 0.85rem;
  color: var(--muted);
  text-align: right;
}

/* Rights page */

.page-rights main {
  padding-top: 3.5rem;
}

.rights-list {
  list-style: disc;
  padding-left: 1.4rem;
}

.rights-list li + li {
  margin-top: 0.25rem;
}

.rights-divider {
  margin-top: 3rem;
  border: none;
  border-top: 1px solid var(--border);
}

.center {
  text-align: center;
}

/* Links */

a {
  color: var(--accent);
}

a:hover {
  color: #ffd495;
}

/* Responsive */

@media (max-width: 880px) {
  .hero-grid,
  .two-column,
  .footer-grid,
  .book-card {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero-cover img {
    max-width: 260px;
    margin: 0 auto;
  }

  .footer-meta {
    text-align: left;
  }

  .main-nav a {
    margin-left: 1rem;
    font-size: 0.8rem;
  }
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .main-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
  }

  .main-nav a {
    margin-left: 0;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  .section {
    padding: 3rem 0;
  }
}