/*
 * Multiple Natures International — Site Stylesheet
 * Staging version for xavigate.com/mni/
 * Design: text-first, institutional, slow reading
 */

/* ========================================
   CSS CUSTOM PROPERTIES
   ======================================== */

:root {
  /* Typography */
  --font-primary: 'Source Serif 4', 'Georgia', serif;
  --font-secondary: 'Inter', 'Helvetica Neue', sans-serif;

  /* Font Sizes - Modest scale */
  --text-xs: 0.8125rem;    /* 13px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */

  /* Line Heights */
  --leading-tight: 1.3;
  --leading-normal: 1.65;
  --leading-relaxed: 1.8;

  /* Colors - Neutral base, single muted accent */
  --color-text: #2c2c2c;
  --color-text-light: #5a5a5a;
  --color-text-muted: #7a7a7a;
  --color-bg: #fafaf8;
  --color-bg-alt: #f4f4f2;
  --color-border: #e0e0dc;
  --color-border-light: #ebebeb;
  --color-accent: #4a5568;  /* Muted blue-gray - used sparingly */
  --color-link: #3d4852;
  --color-link-hover: #2c2c2c;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Layout */
  --content-width: 680px;
  --content-width-wide: 900px;
  --page-padding: 1.5rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}


/* ========================================
   RESET & BASE
   ======================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  padding-top: 20px;
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
}


/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 500;
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-md) 0;
  color: var(--color-text);
}

h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.01em;
}

h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

h4 {
  font-size: var(--text-lg);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

p {
  margin: 0 0 var(--space-md) 0;
}

/* Generous paragraph spacing for slow reading */
p + p {
  margin-top: var(--space-md);
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-link-hover);
}

strong {
  font-weight: 600;
}

em {
  font-style: italic;
}

blockquote {
  margin: var(--space-lg) 0;
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-border);
  color: var(--color-text-light);
  font-style: italic;
}

/* Lists - when they must be used */
ul, ol {
  margin: var(--space-md) 0;
  padding-left: var(--space-lg);
}

li {
  margin-bottom: var(--space-xs);
  line-height: var(--leading-relaxed);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin: var(--space-xl) 0;
}


/* ========================================
   LAYOUT
   ======================================== */

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.content-wrapper {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.content-wrapper--wide {
  max-width: var(--content-width-wide);
}

main {
  flex: 1;
  padding: var(--space-2xl) 0;
}


/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.site-header {
  border-bottom: 1px solid var(--color-border-light);
  padding: var(--space-xl) 0;
  background: var(--color-bg);
  overflow: visible;
}

.site-header .content-wrapper {
  max-width: 960px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: var(--space-lg);
}

/* Logo - text-based */
.site-logo {
  font-family: var(--font-secondary);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.site-logo:hover {
  opacity: 0.85;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.site-nav a {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  text-decoration: none;
  line-height: 1;
  transition: color var(--transition-fast);
}

/* Dropdown navigation */
.nav-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-text);
}

.nav-dropdown-trigger {
  cursor: pointer;
}

.nav-dropdown-trigger::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 4px;
  vertical-align: middle;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  padding: var(--space-sm) 0;
  min-width: 200px;
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  display: block;
  padding: var(--space-xs) var(--space-md);
  white-space: nowrap;
}

.nav-dropdown-menu a:hover {
  background: var(--color-bg-alt);
}


/* ========================================
   FOOTER
   ======================================== */

.site-footer {
  border-top: 1px solid var(--color-border-light);
  padding: var(--space-2xl) 0;
  background: var(--color-bg-alt);
  margin-top: auto;
}

.footer-content {
  max-width: var(--content-width-wide);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-nav-section h4 {
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  margin-top: 0;
}

.footer-nav-section a {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  text-decoration: none;
  padding: var(--space-xs) 0;
}

.footer-nav-section a:hover {
  color: var(--color-text);
}

.footer-legal {
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.footer-legal a {
  color: var(--color-text-muted);
  margin-left: var(--space-md);
}


/* ========================================
   PAGE SECTIONS
   ======================================== */

.page-header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.page-header h1 {
  margin-bottom: var(--space-sm);
}

.page-header .lead {
  font-size: var(--text-lg);
  color: var(--color-text-light);
  line-height: var(--leading-relaxed);
  margin: 0;
}

.page-header .formerly {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
  margin: 0 0 var(--space-sm) 0;
}

.section {
  margin-bottom: var(--space-2xl);
}

.section-divider {
  margin: var(--space-3xl) 0;
  text-align: center;
}

.section-divider::before {
  content: '· · ·';
  color: var(--color-text-muted);
  letter-spacing: 0.5em;
}


/* ========================================
   HOME PAGE SPECIFIC
   ======================================== */

.hero {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.hero h1 {
  font-size: var(--text-3xl);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
}

.hero .lead {
  font-size: var(--text-lg);
  color: var(--color-text-light);
  max-width: 540px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

.pathways {
  margin: var(--space-3xl) 0;
}

.pathways-grid {
  display: grid;
  gap: var(--space-lg);
}

.pathway {
  padding: var(--space-lg);
  border: 1px solid var(--color-border-light);
  text-decoration: none;
  transition: border-color var(--transition-base);
}

.pathway:hover {
  border-color: var(--color-border);
}

.pathway-label {
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.pathway h3 {
  font-size: var(--text-lg);
  margin: 0 0 var(--space-xs) 0;
  color: var(--color-text);
}

.pathway p {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin: 0;
  line-height: var(--leading-normal);
}


/* ========================================
   CONTENT ELEMENTS
   ======================================== */

/* Call to action - understated */
.cta {
  display: inline-block;
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  padding: var(--space-sm) var(--space-lg);
  border: 1px solid var(--color-text);
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.cta:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.cta--secondary {
  border-color: var(--color-border);
  color: var(--color-text-light);
}

.cta--secondary:hover {
  border-color: var(--color-text);
  background: transparent;
  color: var(--color-text);
}

/* Note/aside boxes - minimal */
.note {
  padding: var(--space-md);
  background: var(--color-bg-alt);
  border-left: 2px solid var(--color-border);
  margin: var(--space-lg) 0;
}

.note p:last-child {
  margin-bottom: 0;
}

/* Definition-style content */
.definition {
  margin: var(--space-lg) 0;
}

.definition dt {
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.definition dd {
  margin: 0 0 var(--space-md) 0;
  color: var(--color-text-light);
}


/* ========================================
   TABLES - for structured information
   ======================================== */

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: var(--text-sm);
}

th, td {
  text-align: left;
  padding: var(--space-sm);
  border-bottom: 1px solid var(--color-border-light);
}

th {
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 500;
}


/* ========================================
   FORMS
   ======================================== */

.form-group {
  margin-bottom: var(--space-md);
}

label {
  display: block;
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-xs);
  color: var(--color-text-light);
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: var(--space-sm);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-text);
}

textarea {
  min-height: 150px;
  resize: vertical;
}


/* ========================================
   TRAINING & CERTIFICATION PAGES
   ======================================== */

/* Pricing tiers */
.training-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-lg) 0;
}

.training-tier {
  padding: var(--space-lg);
  border: 1px solid var(--color-border-light);
  text-align: center;
}

.tier-label {
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.tier-price {
  font-size: var(--text-3xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.tier-desc {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin: 0;
}

.pricing-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: var(--space-lg);
  text-align: center;
}

/* Dimension and outcome lists - definition list style */
.dimension-list,
.outcome-list {
  margin: var(--space-lg) 0;
}

.dimension-list dt,
.outcome-list dt {
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

.dimension-list dt:first-child,
.outcome-list dt:first-child {
  margin-top: 0;
}

.dimension-list dd,
.outcome-list dd {
  margin: 0 0 var(--space-md) 0;
  color: var(--color-text-light);
  line-height: var(--leading-relaxed);
}


/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
  :root {
    --text-3xl: 1.5rem;
    --text-2xl: 1.25rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
  }

  .site-header .content-wrapper {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .nav-dropdown-menu {
    position: static;
    border: none;
    padding-left: var(--space-md);
    background: transparent;
  }

  .hero {
    padding: var(--space-2xl) 0;
    text-align: left;
  }

  .hero h1,
  .hero .lead {
    max-width: none;
  }

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

  .training-tiers {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .footer-nav {
    grid-template-columns: 1fr;
  }
}


/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-small { font-size: var(--text-sm); }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-xl { margin-bottom: var(--space-xl); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Certification/training pathway highlight */
.pathway--primary {
  background: var(--color-bg-alt);
}

/* Contact form layout */
.contact-grid {
  display: grid;
  gap: var(--space-2xl);
}

.contact-type {
  padding: var(--space-lg);
  border: 1px solid var(--color-border-light);
}

.contact-type h3 {
  margin-top: 0;
  font-size: var(--text-xl);
}

.contact-type p {
  color: var(--color-text-light);
  font-size: var(--text-sm);
  margin-bottom: var(--space-sm);
}

.contact-type a {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
}


/* ========================================
   BOOK PAGES
   ======================================== */

.book-breadcrumb,
.breadcrumb {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border-light);
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.book-breadcrumb a,
.breadcrumb a {
  color: var(--color-link);
  text-decoration: none;
}

.book-breadcrumb a:hover,
.breadcrumb a:hover { color: var(--color-text); }

.book-breadcrumb .sep,
.breadcrumb .sep,
.breadcrumb-sep { margin: 0 0.5em; }

.book-landing {
  padding: var(--space-3xl) 0 var(--space-2xl);
}

.book-landing-hero {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.book-landing-cover {
  position: sticky;
  top: calc(var(--space-xl) + 60px);
}

.book-landing-cover .cover-img {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  border-radius: 2px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
}

.book-landing-content h1 {
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.book-landing-subtitle {
  font-family: var(--font-secondary);
  font-size: var(--text-lg);
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.book-landing-author {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.book-landing-desc {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.book-landing-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  padding: var(--space-sm) 0;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.book-landing-price {
  font-family: var(--font-secondary);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
}

.book-landing-formats {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.book-free-badge {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #2d6a4f;
  background: #d8f3dc;
  padding: 3px 10px;
  border-radius: 4px;
}

.book-cta-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.book-download-row {
  display: flex;
  gap: var(--space-xs);
}

.btn-download {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-link);
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  text-decoration: none;
  border-radius: 3px;
  transition: background var(--transition-fast);
}

.btn-download:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.cta-primary {
  display: inline-block;
  font-family: var(--font-secondary);
  font-size: var(--text-base);
  font-weight: 600;
  color: #fff;
  background: #2c2c2c;
  padding: 12px 24px;
  border-radius: 4px;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.cta-primary:hover { background: #444; color: #fff; }

.book-chapters,
.book-who-for,
.book-what-shifts,
.book-next {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.book-chapters h2,
.book-who-for h2,
.book-what-shifts h2,
.book-next h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.chapter-list {
  list-style: none;
  counter-reset: chapter;
  padding: 0;
  margin: 0;
}

.chapter-list li {
  counter-increment: chapter;
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
}

.chapter-list li::before {
  content: counter(chapter, decimal-leading-zero);
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  min-width: 28px;
  padding-top: 3px;
}

.who-for-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.who-for-list li {
  padding: var(--space-xs) 0 var(--space-xs) var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
  position: relative;
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
}

.who-for-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

.book-what-shifts p {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.book-next-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.book-next-link {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  color: var(--color-link);
  text-decoration: none;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: color var(--transition-fast);
}

.book-next-link:hover { color: var(--color-text); }

@media (max-width: 700px) {
  .book-landing-hero {
    grid-template-columns: 1fr;
  }
  .book-landing-cover {
    position: static;
    text-align: center;
  }
  .book-landing-cover .cover-img {
    max-width: 180px;
    margin: 0 auto;
  }
}


/* ========================================
   BOOKS CATALOG
   ======================================== */

.books-hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-bottom: 1px solid var(--color-border-light);
}

.books-hero h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.books-hero p {
  font-size: var(--text-lg);
  color: var(--color-text-light);
  max-width: 600px;
  line-height: var(--leading-relaxed);
}

.books-section {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.books-section:last-child {
  border-bottom: none;
}

.books-section-header {
  margin-bottom: var(--space-xl);
}

.books-section-label {
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.books-section-header h2 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.books-section-header p {
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
}

.books-series {
  margin-bottom: var(--space-xl);
}

.books-series-label {
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--space-md);
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.books-grid-5 { grid-template-columns: repeat(5, 1fr); }

.book-card {
  display: flex;
  flex-direction: column;
}

.book-card-cover {
  display: block;
  margin-bottom: var(--space-sm);
}

.book-card-cover img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  transition: box-shadow var(--transition-base);
}

.book-card-cover:hover img {
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.book-card-tag {
  font-family: var(--font-secondary);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xs);
  color: var(--color-text-muted);
}

.book-card h3 {
  font-size: var(--text-base);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-xs);
  flex-grow: 1;
}

.book-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.book-card h3 a:hover { color: var(--color-link); }

.book-card-desc {
  font-family: var(--font-secondary);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-sm);
}

.book-card-price {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.book-card-free {
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #2d6a4f;
  margin-bottom: var(--space-xs);
}

.book-card-dl {
  display: flex;
  gap: 6px;
  margin-bottom: var(--space-xs);
}

.book-card-dl a {
  font-family: var(--font-secondary);
  font-size: 11px;
  color: var(--color-link);
  border: 1px solid var(--color-border);
  padding: 4px 10px;
  text-decoration: none;
  border-radius: 3px;
  transition: background var(--transition-fast);
}

.book-card-dl a:hover {
  background: var(--color-bg-alt);
}

.book-card-buy {
  display: block;
  font-family: var(--font-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-align: center;
  color: #fff;
  background: #2c2c2c;
  padding: 8px 12px;
  border-radius: 3px;
  text-decoration: none;
  margin-bottom: 4px;
  transition: background var(--transition-fast);
}

.book-card-buy:hover { background: #444; color: #fff; }

.book-card-detail {
  font-family: var(--font-secondary);
  font-size: 11px;
  color: var(--color-text-muted);
  text-decoration: none;
  text-align: center;
  display: block;
}

.book-card-detail:hover { color: var(--color-text); }

@media (max-width: 900px) {
  .books-grid, .books-grid-5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .books-grid, .books-grid-5 { grid-template-columns: repeat(2, 1fr); }
}