:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f4;
  --color-ink: #111110;
  --color-ink-soft: #6f6d69;
  --color-accent: #bc361b;
  --color-accent-soft: #e2c4bc;
  --color-border: #e7e5e1;
  --radius-lg: 20px;
  --radius-md: 14px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-accent);
  z-index: 100;
}

/* Scroll reveal */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--color-ink);
}

.logo-mark {
  display: grid;
  grid-template-columns: repeat(3, 5px);
  grid-template-rows: repeat(3, 5px);
  gap: 2px;
  flex-shrink: 0;
}

.logo-mark span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-ink);
}

.logo-mark span:nth-child(2) {
  background: var(--color-accent);
}

.logo-mark span:nth-child(5) {
  background: #d99a2b;
}

.logo-mark span:nth-child(8) {
  background: #3f7a5c;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-ink);
  position: relative;
  transition: 0.2s;
}

.nav-toggle span::before {
  content: "";
  position: absolute;
  top: -6px;
}

.nav-toggle span::after {
  content: "";
  position: absolute;
  top: 6px;
}

.main-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 26px;
  margin: 0;
  padding: 0;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-ink-soft);
  font-size: 0.92rem;
  font-weight: 600;
  transition: color 0.15s;
}

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

.nav-cta {
  display: inline-flex;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: -0.01em;
  border: 1.5px solid var(--color-ink);
  transition: transform 0.15s, background 0.15s, color 0.15s, opacity 0.15s;
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-bg);
}

.btn-primary:hover {
  opacity: 0.8;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-ink);
}

.btn-outline:hover {
  background: var(--color-ink);
  color: var(--color-bg);
  transform: translateY(-1px);
}

.btn-small {
  padding: 8px 16px;
  font-size: 0.82rem;
}

/* Hero */
#top,
#books,
#about,
#contact {
  scroll-margin-top: 88px;
}

.hero {
  padding: 100px 0 64px;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-sans);
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin: 0 0 18px;
  line-height: 1.08;
}

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

@media (prefers-reduced-motion: no-preference) {
  .hero h1 .reveal-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(18px);
    animation: word-in 0.5s ease forwards;
  }

  .hero h1 .reveal-word:nth-child(1) { animation-delay: 0.05s; }
  .hero h1 .reveal-word:nth-child(2) { animation-delay: 0.1s; }
  .hero h1 .reveal-word:nth-child(3) { animation-delay: 0.15s; }
  .hero h1 .reveal-word:nth-child(4) { animation-delay: 0.2s; }
  .hero h1 .reveal-word:nth-child(5) { animation-delay: 0.25s; }
  .hero h1 .reveal-word:nth-child(6) { animation-delay: 0.3s; }
  .hero h1 .reveal-word:nth-child(7) { animation-delay: 0.35s; }
  .hero h1 .reveal-word:nth-child(8) { animation-delay: 0.4s; }
  .hero h1 .reveal-word:nth-child(9) { animation-delay: 0.45s; }
  .hero h1 .reveal-word:nth-child(10) { animation-delay: 0.5s; }
}

@keyframes word-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero p.lede {
  max-width: 540px;
  margin: 0 auto 32px;
  color: var(--color-ink-soft);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Section headings */
.section {
  padding: 56px 0;
}

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

.section-head {
  max-width: 620px;
  margin: 0 0 28px;
  text-align: left;
}

.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}

.section-head-row .section-head {
  margin-bottom: 0;
}

.section-head h2 {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.6rem;
  margin: 0 0 6px;
}

.section-head p {
  color: var(--color-ink-soft);
  margin: 0;
  font-size: 0.95rem;
}

.eyebrow {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-ink-soft);
  margin-bottom: 10px;
}

.hero .eyebrow {
  text-align: center;
}

/* Filter tabs */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-tab {
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-ink-soft);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.filter-tab:hover {
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.filter-tab.active {
  background: var(--color-ink);
  color: var(--color-bg);
  border-color: var(--color-ink);
}

/* Book grid + masonry */
.masonry {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
}

.masonry .book-card {
  flex: 1 1 260px;
  max-width: 300px;
}

.book-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.18s, box-shadow 0.18s;
}

.book-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 32px rgba(17, 17, 16, 0.1);
}

.book-cover {
  aspect-ratio: 2 / 3;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-sans);
  font-weight: 700;
  text-align: center;
  padding: 20px;
  font-size: 1.1rem;
  position: relative;
  cursor: pointer;
  transition: transform 0.4s ease;
}

.book-card:hover .book-cover {
  transform: scale(1.06) rotate(-1deg);
}

.book-cover::after {
  content: "View Details";
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translate(-50%, 8px);
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-ink);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: 999px;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}

.book-card:hover .book-cover::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

.book-body {
  padding: 16px 18px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.book-genre {
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--color-ink-soft);
  margin-bottom: 6px;
}

.book-body h3 {
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.book-blurb {
  color: var(--color-ink-soft);
  font-size: 0.9rem;
  margin: 0 0 16px;
  flex: 1;
}

.buy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.buy-links a {
  font-size: 0.8rem;
  text-decoration: none;
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--color-ink);
  font-weight: 600;
}

.buy-links a:hover {
  border-color: var(--color-ink);
  background: var(--color-ink);
  color: var(--color-bg);
}

/* About */
.about-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  align-items: start;
}

.author-photo {
  aspect-ratio: 1;
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-soft));
}

.about-copy h2 {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 2rem;
  margin-top: 0;
}

.about-copy p {
  color: var(--color-ink-soft);
}

.fact-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  gap: 10px;
}

.fact-list li {
  padding-left: 20px;
  position: relative;
  color: var(--color-ink-soft);
}

.fact-list li::before {
  content: "\2022";
  color: var(--color-accent);
  position: absolute;
  left: 0;
  font-weight: 700;
}

/* Newsletter banner */
.newsletter-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  background: var(--color-accent);
  color: #fff;
  padding: 18px 0;
  transform: translateY(100%);
  transition: transform 0.4s ease;
  box-shadow: 0 -12px 30px rgba(17, 17, 16, 0.18);
}

.newsletter-banner.visible {
  transform: translateY(0);
}

.newsletter-banner-inner {
  display: flex;
  align-items: center;
  gap: 20px;
}

.newsletter-banner-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.newsletter-banner-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-align: left;
}

.newsletter-banner-text strong {
  font-size: 1rem;
  font-weight: 800;
}

.newsletter-banner-text span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
}

.newsletter-banner .signup-form {
  margin: 0;
  max-width: none;
}

.newsletter-banner-close {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  border: none;
  color: #fff;
  font-size: 1.7rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s;
}

.newsletter-banner-close:hover {
  background: rgba(255, 255, 255, 0.26);
}

.signup-form {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 420px;
  margin: 0 auto;
}

.signup-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 13px 18px;
  border-radius: 999px;
  border: none;
  font-size: 1rem;
  font-family: var(--font-sans);
  background: #fff;
  color: var(--color-ink);
}

.signup-form button {
  border: none;
  cursor: pointer;
  background: var(--color-ink);
  color: #fff;
}

.form-success {
  flex-basis: 100%;
  margin-top: 14px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  display: none;
}

/* Contact */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.contact-card h3 {
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 0;
}

.contact-form label {
  display: block;
  font-weight: 700;
  font-size: 0.82rem;
  margin: 16px 0 6px;
}

.contact-form label:first-child {
  margin-top: 0;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  background: var(--color-bg-alt);
  color: var(--color-ink);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button {
  margin-top: 20px;
}

.contact-meta {
  display: grid;
  gap: 18px;
}

.contact-meta .item h4 {
  margin: 0 0 4px;
  font-weight: 700;
}

.contact-meta .item p {
  margin: 0;
  color: var(--color-ink-soft);
}

.social-row {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}

.social-row a {
  text-decoration: none;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-ink);
}

.social-row a:hover {
  border-color: var(--color-ink);
  background: var(--color-ink);
  color: var(--color-bg);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 0 28px;
  text-align: center;
  color: var(--color-ink-soft);
  font-size: 0.82rem;
}

.site-footer a {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-ink);
}

.footer-newsletter {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 32px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.footer-newsletter span {
  font-weight: 700;
  color: var(--color-ink);
  font-size: 0.9rem;
}

.footer-signup-form {
  max-width: 360px;
  margin: 0;
}

.footer-signup-form .form-success {
  color: var(--color-accent);
}

.footer-signup-form input[type="email"] {
  border: 1px solid var(--color-border);
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-social {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-ink-soft);
  transition: color 0.15s, background 0.15s;
}

.footer-social-link:hover {
  color: var(--color-ink);
  background: var(--color-border);
}

.footer-social-link svg {
  width: 16px;
  height: 16px;
}

/* Book detail modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(17, 17, 16, 0.55);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

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

.modal {
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  overflow-y: auto;
  display: grid;
  grid-template-columns: 280px 1fr;
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 60px rgba(17, 17, 16, 0.3);
  transform: translateY(18px);
  transition: transform 0.25s ease;
}

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

.modal-cover {
  width: 100%;
  height: 100%;
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  text-align: center;
  padding: 24px;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.modal-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.modal-body h3 {
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: 1.6rem;
  margin: 0 0 14px;
}

.modal-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 0;
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  font-size: 0.85rem;
  color: var(--color-ink-soft);
}

.modal-stats li:not(:last-child)::after {
  content: "\2022";
  margin: 0 10px;
  color: var(--color-border);
}

.modal-body .book-blurb {
  font-size: 1rem;
  line-height: 1.65;
}

.modal-body .book-blurb {
  margin: 0 0 20px;
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.85);
  color: var(--color-ink);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
}

/* Responsive */
@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    display: none;
    width: 100%;
    order: 3;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 0 4px;
  }

  .main-nav a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    width: 100%;
  }

  .nav-cta {
    display: none;
  }

  .site-header .wrap {
    flex-wrap: wrap;
  }

  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .modal {
    grid-template-columns: 1fr;
    max-height: 90vh;
  }

  .modal-cover {
    height: 38vh;
    min-height: 220px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }

  .newsletter-banner-content {
    flex-direction: column;
    align-items: stretch;
  }

  .newsletter-banner-text {
    text-align: center;
    align-items: center;
  }

  .author-photo {
    max-width: 220px;
    margin: 0 auto;
  }

  .masonry .book-card {
    max-width: 100%;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}