@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:wght@400;700&family=Lobster+Two:ital,wght@0,700;1,700&display=swap');
:root {
  /* colors */
  --color-background: #FDFDFD;
  --color-light-peach: #e3e0dd;
  --color-peach: #FBE8D6;
  --color-gray: #d5d3d3;
  --color-charcoal-light: #e1dcd8;
  --color-charcoal-dark: #241F1B;

  /* button colors */
  --color-button: #2C2D29;
  --color-button-hover: #c2c4bc;
  --color-button-border: #2C2D29;

  /* progress bar */
  --color-progress: #22231f;
  --color-progress-bg:#b3b4ae; /* #DDD6CA; */

  /* Text */
  --color-text: #2C2723;
  --color-text-gray: #777873;
  --color-text-muted: #89827a;
  --color-text-inverse: #F5EFE4;

  /* Accents */
  --color-accent: #8C6A4F;         /* links */
  --color-accent-hover: #6E4F38;
  --color-border-faint: #E3DDD3;
  --color-border-darker: #CFC7B9;
  --color-border-gray: #c9cac6;

  /* box-shadow */
  --color-box-shadow: rgba(0, 0, 0, 0.342);
  --box-shadow-md: 0 4px 6px -1px var(--color-box-shadow);

  /* Font */
  --font-site-brand: 'Lobster Two', Georgia, serif;
  --font-footer: 'Libre Baskerville', Georgia, serif;
  --font-body: 'General Sans', 'Helvetica Neue', Arial, sans-serif;
  --text-xxs: clamp(0.65rem, 0.6rem + 0.15vw, 0.875rem);
  --text-xs: clamp(0.75rem, 0.7rem + 0.15vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.15vw, 1rem);
  --text-md: clamp(0.9rem, 0.85rem + 0.25vw, 1.05rem);
  --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 + 1.05vw, 2rem);
  --text-2xl: clamp(1.75rem, 3vw, 2.25rem);
  --text-3xl: clamp(1.85rem, 4vw, 2.8rem);

  /* Spacing */
  --space-sm: 0.1rem;
  --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;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* content width */
  --content-width: 1200px;
  --button-width: 200px;
  --arrival-card-width: 280px;

  /* min-height */
  --panel-height: 250px;
  --footer-height: 200px;

  /* form element */
  --form-group-width: 50vw;
  --form-input-width: 40vw;
  --form-label-width: 120px;
  --search-width: 340px;
  --select-height: 2.75rem;
  --button-rectangle-height: 2.5rem;
  --button-square-height: 2rem;

}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  /* outline: red 1px solid !important;  */
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-background);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

h1, h2, h3 {
  font-family: var(--font-body);
  text-wrap: balance;
  line-height: 1.15;
  font-weight: 500;
}

p, li, figcaption {
  text-wrap: pretty;
}

/* highlight */
::selection {
  background: var(--color-peach);
  color: var(--color-text);
}

/* button styles */
button {
  border: 1px solid var(--color-button-border);
  background: var(--color-button);
  color: var(--color-text-inverse);
  cursor: pointer;
}

button:hover {
  background: var(--color-button-hover);
  color: var(--color-text);
}

button.outline {
  border: 1px solid var(--color-button-border);
  background: transparent;
  color: var(--color-text);
}

button.outline:hover {
  background: var(--color-charcoal-light);
}

a {
  color: inherit;
  text-decoration: none;
}

.arrow {
  display: inline-block;
  width: 0.98em;
  height: 0.8em;
  margin-left: 0.15em;
  vertical-align: center;
}

a, button, input, textarea, select {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

/* ----------------------------------------------------------
   Page layout
   ---------------------------------------------------------- */

main {
  display: block;
  min-height: 100dvh; /* dynamic viewport height*/
}

main > section {
  width: calc(100% - 32px);
  margin-inline: auto;
}

.container {
  width: min(var(--content-width), 90%);
  margin-inline: auto;
}

.grid {
  display: grid;
}

.grid.two {
  gap: var(--space-4);
  grid-template-columns: repeat(2, 1fr);
}

/* ----------------------------------------------------------
   Top utility bar
   ---------------------------------------------------------- */
.topbar {
  padding-top: var(--space-6);
  padding-bottom: var(--space-2);
  color: var(--text-inverse);
  font-size: var(--text-xs);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  text-align: center;
}

.topbar-tagline {
  margin: 0;
  letter-spacing: 0.04em;
}

.topbar-link {
  font-weight: 500;
  text-decoration: none;
}

.topbar-link:hover {
  transform: translateY(-1px);
  text-decoration: underline;
}

/* ----------------------------------------------------------
   Header
   ---------------------------------------------------------- */

.site-header {
  padding-block: var(--space-6);
  margin-bottom: 0;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.brand {
  flex: 1 0 100%;
  text-decoration: none;
  font-family: var(--font-site-brand);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: .85;
  margin-bottom: var(--space-5);
}

.brand small {
  display: block;
  font-family: var(--font-body);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: .2px;
  color: var(--color-text-muted);
}

.header-search form {
  position: relative;
  align-self: center;
}

.header-search {
  min-width: 0;
  flex: 1 1 auto;
}

.search-row {
  display: flex;
  width: min(100%, 380px);
  margin-inline: auto;
}

.search-row input {
  min-width: 0;
  flex: 1;
  height: var(--space-10);
  border: 1px solid var(--color-border-darker);
  padding: 0 12px;
  font-size: var(--text-sm);
  outline: none;
}

.search-row input:focus {
  border-color: var(--color-button-border);
}

.search-row button {
  width: 84px;
  font-size: var(--text-xs);
}

/* advanced search */
.advanced-search-link {
  display: block;
  margin: 3px auto 0;
  width: min(100%, 380px);
  padding: 0;
  border: 0;
  text-align: left;
  font-size: var(--text-xxs)
}

.advanced-search-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* -- site menu -- */
.site-nav {
  display: none;
  flex-direction: column;
  flex-basis: 100%;
  gap: 0;
  white-space: normal;
}

.site-nav a {
  display: block;
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.3;
  text-decoration: none;
  padding-inline: var(--space-2);
  padding-block: var(--space-4);
  border-bottom: 2px solid transparent;
}


.site-nav a:hover {
  border-bottom-color: var(--color-button-border);
}

.site-nav.is-open {
  display: flex;
}

/* -- mobile menu -- */
.mobile-nav-toggle {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--color-border-faint);
  border-radius: var(--radius-sm);
  background: var(--color-background);
  color: var(--color-text);
  font-size: var(--text-sm);
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle[aria-expanded="true"] {
  background: var(--color-background);
}

.mobile-nav-icon {
  display: grid;
  gap: 5px;
  width: 18px;
}

.mobile-nav-icon span {
  height: 2px;
  background: currentColor;
}



/* ----------------------------------------------------------
   Hero
   ---------------------------------------------------------- */

.hero {
  margin-top: 0;
  display: grid;
  height: auto;
  grid-template-columns: 1fr;
  background: var(--color-charcoal-dark);
  color: var(--color-text-inverse);
  overflow: hidden;
}

.hero-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-12);
}

.hero-intro > span {
  margin-bottom: var(--space-5);
  color: var(--color-peach);
}

.hero h1 {
  margin: 0 0 var(--space-4);
  font-size: var(--text-xl); 
  line-height: 1.02;
  letter-spacing: .8px;
}

.hero p {
  margin: 0;
  font-size: var(--text-md);
  line-height: 1.52;
}

.hero-image {
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  background-image:
    linear-gradient(rgba(180, 112, 43, .25), rgba(94, 55, 20, .38)),
    url('../img/pg-home-hero.jpg');
  background-size: cover;
  background-position: center;
}

/* ----------------------------------------------------------
   Shared section styles
   ---------------------------------------------------------- */
.section-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.section-panel {
  margin-top: var(--space-8);
  /* min-height: var(--panel-height); */
  padding: var(--space-10) var(--space-6);
}

.section-panel.peach {
  border: 1px solid var(--color-border-faint);
  background: var(--color-peach);
}

.section-panel.border {
  border: 1px solid var(--color-border-darker);
}

.section-heading h2 {
  /* margin-bottom: var(--space-1); */
  font-size: var(--text-lg); /* 22px; */
  line-height: 1.15;
  font-weight: 700;
}

.section-intro {
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.text-link {
  color: var(--accent);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.text-link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.panel-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.midsize-button {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  text-decoration: none;
}

.eyebrow {
  color: var(--color-accent);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ----------------------------------------------------------
   Reading Progress
   ---------------------------------------------------------- */

.progress-content {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: var(--space-5);
  margin-bottom: var(--space-2);
}

.progress-content > img {
  width: 148px;
  height: 200px;
  object-fit: cover;
}

.progress-bar {
  width: 200px;
  max-width: 100%;
  height: 5px;
  margin-top: var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-progress-bg);
  overflow: hidden;
}

.progress-bar span {
  display: block;
  width: 2%;
  height: 100%;
  background: var(--color-progress);
}

.current-book small {
  font-size: var(--text-xs);
}

.book-excerpt {
  max-width: 520px;
  margin: 0;
  font-size: var(--text-md);
  line-height: 1.32;
}

/* ----------------------------------------------------------
   Suggested Reads
   ---------------------------------------------------------- */

.book-grid {
  display: flex;
  overflow-x: auto;
  gap: var(--space-5);
  padding: 0 0 var(--space-2);
  /* scroll-snap-type: x mandatory;
  scrollbar-width: thin; */
}

.book-card {
  flex: 0 0 calc((100% - var(--space-5)) / 2);
  min-width: 0;
  scroll-snap-align: start;
}

.bookcover {
  content: cover;
  margin-bottom: var(--space-2);
}

.bookcover img {
  box-shadow: var(--box-shadow-md);
}

.book-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.book-meta:hover {
  color: var(--color-accent);
}

.book-meta h3 {
  text-align: center;
}

.carousel-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-6);
  padding-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-md);
}

.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: auto;
  justify-content: space-between;
}

.pagination p {
  margin: 0;
}

.carousel-control {
  display: flex;
  gap: var(--space-1);
}

.carousel-control > button {
  width: var(--button-square-height);
  height: var(--button-square-height);
  color: var(--color-text);
  font-size: var(--text-sm);
}

.carousel-control > button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.carousel-control > button:disabled:hover {
  background: var(--color-charcoal-light);
  color: var(--color-text);
}

/* ----------------------------------------------------------
   New Arrivals
   -------------------------------------------------------- */

.arrival-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--arrival-card-width)), 1fr));
  gap: var(--space-3);
}

.arrival-card {
  display: flex;
  gap: var(--space-5);
  border: 1px solid var(--color-border-faint);
  /* background: var(--color-light-peach); */
  text-decoration: none;
  
}

.arrival-card:hover {
  border-color: var(--color-accent);
}

.arrival-card img {
  width: 135px;
  height: auto;
  object-fit: contain;
}

.arrival-card h3 {
  font-size: var(--text-base);
}

.arrival-card p {
  font-size: var(--text-sm);
}

.arrival-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: var(--space-1);
}


/* ----------------------------------------------------------
   Browse by Subjects / Collections
   ---------------------------------------------------------- */

.subject-grid,
.collection-grid {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.subject-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
}

.collection-grid {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14.5rem), 1fr));
}

.subject-grid button,
.collection-grid button {
  height: var(--space-12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  border: 1px solid var(--color-border-gray);
  background: transparent;
  color: var(--color-text);
  font-size: var(--text-sm);
  text-align: left;
}

/* ----------------------------------------------------------
   Mission banner (Books Beyond Borders)
   ---------------------------------------------------------- */
.mission-inner {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: var(--space-10);
  background: var(--color-peach);
  padding-inline: var(--space-10);
}

.mission-inner h2 {
  font-size: var(--text-2xl);
  font-weight: 400;
  letter-spacing: var(--space-sm);
  line-height: 1.2;
  max-width: none;
}

.mission-inner p {
  margin-bottom: var(--space-5);
}

/* ----------------------------------------------------------
   Footer
   ---------------------------------------------------------- */
footer {
  margin-top: var(--space-16);
  min-height: var(--footer-height);
  padding-block: var(--space-10);
  border-top: 1px solid var(--color-border-faint);
  font-family: var(--font-footer);
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-flow: column wrap;
  gap: var(--space-3) 0;
  align-items: center;
  justify-content: center;
}

.footer-inner strong {
  font-size: var(--text-xl);
  font-weight: 400;
}

.footer-inner span {
  display: block;
  font-size: var(--text-sm);
}

.footer-inner nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.footer-inner a:hover {
  color: var(--color-text-muted);
  text-decoration: underline;
  text-underline-offset: var(--space-2);
}


/* --------------------------------------------------------------------------
   Larger screens
   -------------------------------------------------------------------------- */

@media (min-width: 561px) {
  main > section { 
    max-width: var(--content-width);
  }

  .book-card {
    flex-basis: calc((100% - 3 * var(--space-5)) / 4);
  }

  .topbar-inner {
    justify-content: space-between;
    text-align: left;
  }

}

@media (min-width: 821px) {
  .site-header {
    margin-bottom: var(--space-6);
  }

  .brand {
    flex: 0 0 auto;
    font-size: var(--text-3xl);
    margin-bottom: 0;
  }

  .brand small {
    font-size: var(--text-md);
  }

  .header-search {
    flex: 1 1 var(--search-width);
  }

  .mobile-nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    align-items: center;
    flex-direction: row;
    flex-basis: auto;
    flex: 0 1 auto;
    margin-left: auto;
    gap: var(--space-2);
    white-space: nowrap;
  }

  .site-nav a {  
    padding-inline: var(--space-4);
    padding-block: var(--space-3);
    border-bottom: 2px solid transparent;
  }

  .hero {
    grid-template-columns: repeat(2, minmax(400px, 1fr));
  }

  .hero-intro {
    padding-inline: var(--space-10);
  }

  .hero-image {
    aspect-ratio: 4 / 3;
    contain: cover;
  }

  .progress-content {
    grid-template-columns: 148px 250px 1fr auto;
    gap: var(--space-8);
    justify-items: stretch;
  }

  .book-card {
    flex-basis: calc((100% - 5 * var(--space-5)) / 6);
  }

  .carousel-footer {
    flex-wrap: nowrap;
  }

  .pagination {
    margin-left: auto;
  }
}

@media (min-width: 1100px) {
  .arrival-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .mission-inner {
    grid-template-columns: 290px 1fr;
  }

  .mission-inner h2 {
    max-width: 12ch;
  }

  footer {
    text-align: left;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }

  .footer-inner nav {
    font-size: var(--text-sm);
    gap: var(--space-2) var(--space-10);
  }

}