:root {
  --page-background: #f5f3ef;
  --surface: #faf9f7;
  --surface-muted: #e7e8e8;
  --text: #292d32;
  --text-muted: #626970;
  --accent: #465865;
  --accent-strong: #344651;
  --accent-contrast: #ffffff;
  --border: #cfd2d1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background: var(--page-background);
  color: var(--text);
}

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

a:hover,
a:focus-visible {
  color: var(--accent-strong);
}

h1,
h2,
h3 {
  color: var(--accent);
}

.site-header {
  padding: 0.6rem 1.5rem;
  text-align: center;
  background: var(--surface-muted);
  color: var(--accent);
}

.site-header h1 {
  margin: 0;
  font-size: 2.25rem;
}

.site-header p {
  margin: 0.1rem 0 0;
  font-size: 1rem;
}

nav {
  background: var(--surface-muted);
  text-align: center;
  padding: 0.4rem 0.75rem;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.15rem;
}

.main-nav a {
  color: var(--accent);
  padding: 0.35rem 0.65rem;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: bold;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  background: var(--surface);
  color: var(--accent-strong);
  text-decoration: none;
}

.main-nav a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.main-nav a.active {
  background: var(--accent-strong);
  color: var(--accent-contrast);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
}

main.article-page {
  max-width: 760px;
}

.panel-area {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.panel {
  min-height: 220px;
  padding: 1.5rem;
  border: 1px solid var(--border);
  background: var(--surface);
}

.panel h2 {
  margin: 0;
  font-size: 1.4rem;
}

.panel p {
  line-height: 1.5;
}

.recently-added {
  min-height: 0;
}

.recently-added ul {
  margin: 0.75rem 0;
  padding: 0;
  list-style: none;
}

.recently-added-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.recently-added-cover-link {
  flex: 0 0 70px;
  width: 70px;
}

.recently-added-cover {
  display: block;
  width: 100%;
  height: auto;
}

.recently-added-details {
  min-width: 0;
}

.recently-added-details span {
  display: block;
}

.featured-book-cover-link {
  display: block;
  width: 100%;
  max-width: 126px;
  margin: 1rem auto 0;
}

.featured-book-cover {
  display: block;
  width: 100%;
  max-width: 126px;
  height: auto;
}

.featured-book-details h3 {
  margin: 1rem 0 0;
  font-size: 1.15rem;
}

.featured-book-details {
  width: 100%;
}

.featured-book-details p {
  margin-bottom: 0;
}

.catalog-search {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.catalog-search label {
  width: 100%;
  font-weight: bold;
}

.catalog-search input {
  min-width: 220px;
  padding: 0.45rem;
  border: 1px solid var(--accent);
  font: inherit;
}

.catalog-search button {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--accent-strong);
  background: var(--accent-strong);
  color: var(--accent-contrast);
  font: inherit;
  cursor: pointer;
}

.analytics-date-form {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.analytics-date-form label {
  font-weight: bold;
}

.analytics-date-form input {
  padding: 0.45rem;
  border: 1px solid var(--accent);
  font: inherit;
}

.analytics-date-form button {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--accent-strong);
  background: var(--accent-strong);
  color: var(--accent-contrast);
  font: inherit;
  cursor: pointer;
}

.analytics-totals {
  padding-left: 1.25rem;
}

table[aria-label="Book event ranking"] {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

table[aria-label="Book event ranking"] th,
table[aria-label="Book event ranking"] td {
  padding: 0.5rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.catalog-search input:focus-visible,
.catalog-search button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.recent-books {
  margin: 1.5rem 0;
}

.recent-books ul {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
}

.recent-books span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.year-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.year-link {
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}

.year-link:hover,
.year-link:focus-visible {
  background: var(--accent-strong);
  color: var(--accent-contrast);
}

.year-link:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.author-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.author-link {
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}

.author-link:hover,
.author-link:focus-visible {
  background: var(--accent-strong);
  color: var(--accent-contrast);
}

.author-link:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.book-detail {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.book-detail > a {
  display: block;
  width: 100%;
  max-width: 260px;
}

.book-cover {
  width: 100%;
  max-width: 260px;
  height: auto;
  display: block;
}

.book-details h2 {
  margin-top: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
  background: var(--accent-strong);
}

.footer-nav a {
  color: var(--accent-contrast);
}

@media (max-width: 700px) {
  .site-header {
    padding: 0.5rem 1rem;
  }

  .site-header h1 {
    font-size: 2rem;
  }

  nav {
    padding: 0.35rem 0.5rem;
  }

  table[aria-label="Book event ranking"] {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .panel-area {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .recently-added-item {
    flex-direction: column;
  }
}

@media (min-width: 701px) {
  .book-detail {
    flex-direction: row;
    align-items: flex-start;
  }

  .book-detail > a {
    flex: 0 0 365px;
  }
}