@import url('https://fonts.googleapis.com/css2?family=Gentium+Book+Basic:ital,wght@0,400;0,700;1,400&family=Lora:ital,wght@0,400;0,600;0,700;1,400&family=Lato:wght@400;700&display=swap');

:root {
  /* Approved Website Colour Tokens */
  --color-bg-body: #FDFBF7;
  --color-bg-alt: #F1E9DC;
  --color-bg-elevated: #E5D9C5;
  --color-primary-green: #7BAE8E;
  --color-accent-gold: #D6B36A;
  --color-logo-pink: #B04A56;
  --color-text-main: #4A4A4A;
  --color-text-muted: #6A6A6A;
  --color-divider: rgba(0, 0, 0, 0.08);
  --color-web-action-green: #3F6B52;
  --color-web-surface-grey-green: #EDF2EE;
  --color-web-surface-misty-rose: #F3E7E9;

  /* Typography */
  --font-heading: 'Lora', serif;
  --font-body: 'Gentium Book Basic', 'Gentium Basic', serif;
  --font-ui: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Layout & Sizing */
  --max-width-container: 1140px;
  --header-height: 72px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition-normal: 0.25s ease;
}

/* ----------------------------------------------------
   Base & Reset Styles
---------------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: clip;
}

body {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text-main);
  background-color: var(--color-bg-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

/* Accessibility: Visually Hidden & Focus States */
.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;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--color-web-action-green);
  outline-offset: 3px;
}

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

a {
  color: var(--color-web-action-green);
  text-decoration: none;
  transition: color var(--transition-normal), text-decoration var(--transition-normal);
}

a:hover {
  color: var(--color-web-action-green);
  text-decoration: underline;
}

/* ----------------------------------------------------
   Typography Hierarchy
---------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-main);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1.25rem;
}

.lead-text {
  font-size: 1.35rem;
  line-height: 1.6;
  color: var(--color-text-main);
  font-weight: 400;
}

/* ----------------------------------------------------
   Layout Containers
---------------------------------------------------- */
.container {
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 820px;
  margin: 0 auto;
}

.section-padding {
  padding: 4.5rem 0;
}

.section-padding-bottom-sm {
  padding-top: 4.5rem;
  padding-bottom: 1.5rem;
}

/* ----------------------------------------------------
   Shared Site Header & Navigation
---------------------------------------------------- */
.site-header {
  height: var(--header-height);
  background-color: var(--color-bg-body);
  border-bottom: 1px solid var(--color-divider);
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-main);
  text-decoration: none;
}

.nav-brand:hover {
  text-decoration: none;
  color: var(--color-text-main);
}

.nav-brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-links li a {
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-normal);
}

.nav-links li a:hover,
.nav-links a:hover {
  color: var(--color-web-action-green);
}

.nav-links a.active {
  color: var(--color-text-main);
  border-bottom-color: var(--color-web-action-green);
  text-decoration: none;
}

.nav-links a.active:hover {
  color: var(--color-web-action-green);
  text-decoration: none;
}

/* Mobile Toggle Button */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-main);
  cursor: pointer;
  padding: 0.5rem;
}

/* ----------------------------------------------------
   Hero Banner Section
---------------------------------------------------- */
.hero-banner {
  background-color: var(--color-bg-body);
  color: var(--color-text-main);
  padding: 2.5rem 0 2.5rem 0;
  position: relative;
  border-bottom: 1px solid var(--color-divider);
}

.hero-content {
  max-width: var(--max-width-container);
  margin: 0 auto;
}

.hero-banner-image-wrapper {
  margin-bottom: 0;
  text-align: center;
}

.hero-banner-img {
  width: 100%;
  max-width: 1140px;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: var(--radius-md);
}

/* ----------------------------------------------------
   Cards & Layout Grids
---------------------------------------------------- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  align-items: start;
}

.card {
  background-color: var(--color-bg-body);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary-green);
}

/* Utility classes replacing inline styles */
.feature-card-item {
  text-align: center;
}

.feature-card-img-wrapper {
  margin-bottom: 1.25rem;
}

.feature-card-img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.feature-card-text {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-main);
  margin-bottom: 0;
}

.card-spacing-bottom {
  margin-bottom: 3rem;
}

.card-spacing-bottom > .lead-text,
.card-spacing-bottom > p {
  max-width: 68ch;
}

.heading-spacing-bottom {
  margin-bottom: 1.25rem;
}

.grid-spacing-bottom {
  margin-bottom: 3rem;
}

.feature-list-clean {
  list-style: none;
  padding-left: 0.5rem;
  margin-bottom: 1rem;
}

.feature-list-item {
  margin-bottom: 0.6rem;
}

.no-margin-bottom {
  margin-bottom: 0;
}

.section-heading-center {
  text-align: center;
  margin-bottom: 2rem;
}

.section-subheading-center {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 2.5rem;
  color: var(--color-text-muted);
}

/* ----------------------------------------------------
   Buttons & Badges
---------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-web-action-green);
  color: var(--color-bg-body);
  border-color: transparent;
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--color-web-action-green);
  border-color: var(--color-web-action-green);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-web-action-green);
  color: var(--color-bg-body);
  border-color: transparent;
}

.btn-secondary:hover {
  background-color: transparent;
  color: var(--color-web-action-green);
  border-color: var(--color-web-action-green);
  text-decoration: none;
  transform: translateY(-1px);
}

.heading-accent-green {
  color: var(--color-web-action-green);
  border-bottom: 2px solid var(--color-web-action-green);
  display: inline-block;
  padding-bottom: 0.5rem;
}

.store-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1040px;
  margin: 2.5rem auto 0;
}

.store-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--color-bg-body);
  border: 1px solid var(--color-primary-green);
  border-radius: var(--radius-md);
  padding: 2.5rem 1.5rem;
  color: inherit;
  text-decoration: none;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.store-card:hover,
.store-card:focus-visible {
  color: inherit;
  text-decoration: none;
  transform: translateY(-4px);
  box-shadow: 0 6px 16px var(--color-divider);
  border-color: var(--color-web-action-green);
}

.store-card-img-wrapper {
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-grow: 1;
}

.store-badge-img {
  max-width: 100%;
  height: auto;
  display: block;
}

.store-card-btn {
  width: 100%;
  min-height: 48px;
  font-size: 0.9rem;
  line-height: 1.3;
  text-align: center;
  white-space: normal;
}

/* ----------------------------------------------------
   Media & Embedded Elements
---------------------------------------------------- */
.youtube-banner-card {
  display: block;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-divider);
  color: inherit;
  text-decoration: none;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.youtube-banner-card:hover,
.youtube-banner-card:focus-visible {
  color: inherit;
  text-decoration: none;
  transform: translateY(-2px);
  border-color: var(--color-primary-green);
}

.youtube-banner-img {
  width: 100%;
  height: auto;
  display: block;
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-web-surface-grey-green);
  margin: 1.5rem 0;
  border: 1px solid var(--color-divider);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ----------------------------------------------------
   Kindle Publication Card
---------------------------------------------------- */
.kindle-card {
  background-color: var(--color-web-surface-misty-rose);
  border-left: 4px solid var(--color-accent-gold);
  padding: 2.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 3rem;
}

.kindle-img-wrapper {
  text-align: center;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.kindle-img {
  max-width: 240px;
  height: auto;
  margin: 0 auto;
  border-radius: var(--radius-sm);
}

/* ----------------------------------------------------
   Support Section Card
---------------------------------------------------- */
.support-card {
  border-top: 4px solid var(--color-primary-green);
}

.support-btn-wrapper {
  margin: 2rem 0 1.5rem;
}

/* ----------------------------------------------------
   Policy & Documentation Pages
---------------------------------------------------- */
.doc-header {
  background-color: var(--color-web-surface-grey-green);
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--color-divider);
}

.doc-content {
  max-width: 820px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}

.doc-content p,
.doc-content li {
  max-width: 70ch;
}

.doc-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.doc-content h2 {
  font-size: 1.65rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text-main);
}

.doc-content h3 {
  font-size: 1.3rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

.doc-content ul, .doc-content ol {
  margin-left: 2rem;
  margin-bottom: 1.5rem;
}

.doc-content li {
  margin-bottom: 0.6rem;
}

.doc-box {
  background-color: var(--color-web-surface-misty-rose);
  border-left: 4px solid var(--color-primary-green);
  padding: 1.5rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 2rem 0;
}

/* ----------------------------------------------------
   Contact Card & Support Section
---------------------------------------------------- */
.contact-section {
  background-color: var(--color-web-surface-grey-green);
  border-top: 1px solid var(--color-divider);
  padding: 4rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.contact-card {
  background-color: var(--color-bg-body);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* ----------------------------------------------------
   Shared Footer (Restyled with Authorized Palette)
---------------------------------------------------- */
.site-footer {
  background-color: var(--color-web-surface-grey-green);
  color: var(--color-text-main);
  padding: 3.5rem 0 2rem;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  border-top: 1px solid var(--color-divider);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: 2rem;
}

.footer-links {
  display: flex;
  list-style: none;
  gap: 1.75rem;
  flex-wrap: wrap;
}

.footer-links li a {
  color: var(--color-text-main);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.footer-links li a:hover {
  color: var(--color-web-action-green);
  text-decoration: underline;
}

.footer-links a.active {
  color: var(--color-web-action-green);
  font-weight: 700;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ----------------------------------------------------
   Utility Classes & Component Specifics (Replacing inline styles)
---------------------------------------------------- */
.container-wide { max-width: 1040px; margin: 0 auto; }
.gap-lg { gap: 2.5rem; }
.align-stretch { align-items: stretch; }
.flex-col-between { display: flex; flex-direction: column; justify-content: space-between; }
.bg-alt { background-color: var(--color-web-surface-grey-green); }

.youtube-play-overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background-color: rgba(0,0,0,0.15); transition: background-color var(--transition-normal); }
.youtube-play-btn { width: 72px; height: 52px; background-color: rgba(220, 38, 38, 0.9); border-radius: 14px; display: flex; align-items: center; justify-content: center; }
.youtube-play-icon { display: inline-block; width: 0; height: 0; border-top: 10px solid transparent; border-bottom: 10px solid transparent; border-left: 18px solid var(--color-bg-body); margin-left: 4px; }

.publication-title { font-size: 1.55rem; margin-bottom: 0.75rem; line-height: 1.35; }
.publication-subtitle { font-size: 1.05rem; font-weight: 700; color: var(--color-web-action-green); margin-bottom: 1rem; }
.publication-store-text { margin-bottom: 1.5rem; color: var(--color-text-muted); font-size: 0.95rem; }
.kindle-cover-img { max-height: 360px; margin: 0 auto; border-radius: var(--radius-sm); }

.support-thanks-bold { margin-bottom: 0.25rem; font-weight: 700; }
.support-thanks-italic { margin-bottom: 0; font-style: italic; }

.contact-grid-narrow { max-width: 800px; margin: 0 auto; }
.contact-card-title { font-size: 1.3rem; margin-bottom: 0.5rem; color: var(--color-web-action-green); }
.contact-card-desc { color: var(--color-text-muted); margin-bottom: 1rem; }
.contact-card-link {
  font-weight: 700;
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.35rem 0;
}
.contact-footer-info { text-align: center; margin-top: 2.5rem; }
.contact-footer-website { margin-bottom: 0.5rem; }
.contact-footer-note { margin-bottom: 0; color: var(--color-text-muted); font-style: italic; }

.footer-brand { font-family: var(--font-heading); font-size: 1.35rem; font-weight: 700; color: var(--color-text-main); }

/* ----------------------------------------------------
   Responsive Media Queries
---------------------------------------------------- */
@media screen and (max-width: 992px) {
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .grid-3, .grid-4 {
    grid-template-columns: 1fr 1fr;
  }
}

@media screen and (max-width: 768px) {
  h1 {
    font-size: 2.1rem;
  }
  
  h2 {
    font-size: 1.65rem;
  }

  .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--color-bg-body);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--color-divider);
  }

  .nav-links.open {
    display: flex;
  }

  .store-cards-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media screen and (max-width: 480px) {
  .hero-banner {
    padding: 1.25rem 0;
  }

  .hero-banner .container {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .hero-banner-img {
    border-radius: var(--radius-sm);
  }
  
  .section-padding {
    padding: 3rem 0;
  }

  .nav-links li a {
    display: block;
    padding: 0.75rem 0;
    min-height: 44px;
  }

  .store-card {
    padding: 1.75rem 1.25rem;
  }

  .footer-links {
    gap: 1rem 1.25rem;
  }

  .footer-links li a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }

  .kindle-img-wrapper {
    min-height: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .card,
  .btn,
  .store-card,
  .youtube-banner-card,
  a,
  .nav-links li a {
    transition: none;
  }

  .card:hover,
  .store-card:hover,
  .store-card:focus-visible,
  .btn-primary:hover,
  .btn-secondary:hover,
  .youtube-banner-card:hover,
  .youtube-banner-card:focus-visible {
    transform: none;
  }
}