:root {
  --color-ivory: #faf3e6;
  --color-ivory-soft: #f3e9d8;
  --color-navy: #1b2a41;
  --color-navy-deep: #101823;
  --color-copper: #b5652e;
  --color-copper-light: #d98a4f;
  --color-ink-muted: #5b6472;

  --font-display: "Playfair Display", Georgia, serif;
  --font-reading: "Source Serif 4", Georgia, serif;
  --font-ui: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Used by the ebook reader's font-size control once that page exists. */
  --reading-font-size: 1.125rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-ivory);
  color: var(--color-navy);
  font-family: var(--font-ui);
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(27, 42, 65, 0.1);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-navy);
}

.brand-mark {
  height: 32px;
  width: auto;
}

.brand-word {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  font-weight: 500;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--color-copper);
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.hero {
  text-align: center;
  padding: 1rem 0 3rem;
}

.hero-logo {
  max-width: 420px;
  width: 100%;
  height: auto;
  margin-bottom: 1.5rem;
}

.hero-copy {
  font-family: var(--font-reading);
  font-size: 1.05rem;
  color: var(--color-ink-muted);
  max-width: 46ch;
  margin: 0 auto 2rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  font-family: var(--font-ui);
}

.btn-primary {
  background: var(--color-navy);
  color: var(--color-ivory);
}

.btn-primary:hover {
  background: var(--color-navy-deep);
}

.btn-secondary {
  border: 1px solid var(--color-copper);
  color: var(--color-copper);
}

.btn-secondary:hover {
  background: var(--color-copper);
  color: var(--color-ivory);
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.page-header p {
  color: var(--color-ink-muted);
}

.empty-state {
  margin-top: 2rem;
  padding: 2rem;
  background: var(--color-ivory-soft);
  border-radius: 6px;
  color: var(--color-ink-muted);
  text-align: center;
}

.site-footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--color-ink-muted);
  font-size: 0.85rem;
  border-top: 1px solid rgba(27, 42, 65, 0.1);
}

.not-found {
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--color-ink-muted);
}

@media (max-width: 600px) {
  .site-header {
    flex-direction: column;
    gap: 0.75rem;
  }

  .site-nav {
    gap: 1rem;
  }
}

/* ---------- Reading content (posts, chapters) ---------- */

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

.post-list-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(27, 42, 65, 0.1);
}

.post-list-item h2 {
  font-family: var(--font-display);
  margin: 0 0 0.25rem;
}

.post-date {
  color: var(--color-ink-muted);
  font-size: 0.85rem;
  margin: 0 0 0.5rem;
}

.post-summary {
  color: var(--color-ink-muted);
  margin: 0;
}

.book-latest-chapter a {
  color: var(--color-copper);
  text-decoration: none;
}

.book-latest-chapter a:hover {
  text-decoration: underline;
}

.related-book-note {
  font-style: italic;
  color: var(--color-copper);
}

.reading-content h1 {
  font-family: var(--font-display);
  font-size: 2.1rem;
}

.reading-body {
  font-family: var(--font-reading);
  font-size: var(--reading-font-size);
  line-height: 1.75;
}

.reading-body p {
  margin: 0 0 1.2em;
}

.reading-body h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.3;
  margin: 2.2rem 0 0.75rem;
}

.reading-body h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.3;
  margin: 1.8rem 0 0.5rem;
}

.reading-body blockquote {
  margin: 1.75rem 0;
  padding: 0.25rem 1.5rem;
  border-left: 3px solid var(--color-copper);
  font-style: italic;
  color: var(--color-ink-muted);
}

.reading-body ul,
.reading-body ol {
  margin: 0 0 1.2em;
  padding-left: 1.5rem;
}

.reading-body li {
  margin-bottom: 0.4em;
}

.reading-body a {
  color: var(--color-copper);
}

.reading-body strong {
  color: var(--color-navy);
}

.reading-body hr {
  border: none;
  border-top: 1px solid rgba(27, 42, 65, 0.15);
  margin: 2.5rem 0;
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 2rem;
}

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

.book-card h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0.75rem 0 0.25rem;
}

.book-card p {
  color: var(--color-ink-muted);
  font-size: 0.9rem;
}

.book-cover-thumb {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: 4px;
}

.book-detail-cover {
  max-width: 220px;
  width: 100%;
  height: auto;
  margin-bottom: 1.5rem;
}

.book-detail-description {
  font-family: var(--font-reading);
  color: var(--color-ink-muted);
}

.book-toc {
  padding-left: 1.25rem;
}

.book-toc li {
  margin-bottom: 0.4rem;
}

.book-progress-note {
  margin-top: 1.5rem;
  padding: 0.9rem 1.25rem;
  background: var(--color-ivory-soft);
  border-left: 3px solid var(--color-copper);
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--color-ink-muted);
}

.book-progress-label {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-copper);
  margin-right: 0.6rem;
}

.chapter-back {
  margin-bottom: 1rem;
}

.chapter-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(27, 42, 65, 0.1);
}

.chapter-nav a {
  text-decoration: none;
  color: var(--color-copper);
}

/* ---------- Admin ---------- */

.admin-shell {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--color-navy);
  color: var(--color-ivory);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-ivory);
  text-decoration: none;
  font-family: var(--font-display);
}

.admin-brand img {
  height: 24px;
  filter: invert(1) brightness(2);
}

.admin-sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.admin-sidebar nav a {
  color: var(--color-ivory);
  text-decoration: none;
  opacity: 0.85;
}

.admin-sidebar nav a:hover {
  opacity: 1;
  color: var(--color-copper-light);
}

.admin-signout {
  margin-top: auto;
  background: none;
  border: 1px solid rgba(250, 243, 230, 0.3);
  color: var(--color-ivory);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-ui);
}

.admin-main {
  flex: 1;
  padding: 2.5rem 3rem;
  max-width: 900px;
}

.admin-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid rgba(27, 42, 65, 0.1);
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-draft {
  background: var(--color-ivory-soft);
  color: var(--color-ink-muted);
}

.badge-published {
  background: var(--color-copper);
  color: var(--color-ivory);
}

.badge-skeptic {
  background: var(--color-navy);
  color: var(--color-ivory);
  margin-left: 0.4rem;
}

.badge-believer {
  background: var(--color-copper-light);
  color: var(--color-navy-deep);
  margin-left: 0.4rem;
}

.admin-form label.admin-checkbox {
  flex-direction: row;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.admin-form label.admin-checkbox input {
  margin-top: 0.25rem;
}

.admin-form label.admin-checkbox .hint {
  flex-basis: 100%;
  margin-left: 1.75rem;
}

.admin-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 640px;
}

.admin-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: #fff;
  border: 1px solid rgba(27, 42, 65, 0.1);
  border-radius: 10px;
  padding: 1.5rem 1.75rem;
}

.admin-section h2 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin: 0 0 0.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(27, 42, 65, 0.08);
}

.admin-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-weight: 500;
}

.admin-form input[type="text"],
.admin-form input[type="password"],
.admin-form input[type="file"],
.admin-form textarea,
.admin-form select {
  font-family: var(--font-ui);
  font-size: 1rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid rgba(27, 42, 65, 0.25);
  border-radius: 4px;
  background: #fff;
}

.admin-form input[type="text"]:focus,
.admin-form input[type="password"]:focus,
.admin-form textarea:focus,
.admin-form select:focus {
  outline: none;
  border-color: var(--color-copper);
  box-shadow: 0 0 0 3px rgba(181, 101, 46, 0.15);
}

.admin-body-field {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.9rem;
}

.hint {
  font-weight: 400;
  color: var(--color-ink-muted);
  font-size: 0.85rem;
}

.admin-cover-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
}

.admin-cover-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.admin-cover-label {
  font-weight: 500;
}

.admin-cover-frame {
  width: 100%;
  max-width: 160px;
  aspect-ratio: 2 / 3;
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-ivory-soft);
  border: 1px solid rgba(27, 42, 65, 0.15);
}

.admin-cover-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.admin-cover-frame.is-empty {
  border-style: dashed;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-muted);
  font-size: 0.8rem;
  text-align: center;
  padding: 0.75rem;
}

.admin-file-input {
  font-size: 0.85rem;
  max-width: 220px;
}

.admin-actions-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.admin-chapters {
  margin-top: 0.5rem;
}

.admin-chapter-list {
  list-style: decimal;
  padding-left: 1.25rem;
}

.admin-chapter-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(27, 42, 65, 0.08);
}

.chapter-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.inline-form {
  display: inline;
}

.inline-form button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-navy);
  font-size: 0.95rem;
}

.admin-add-chapter,
.admin-import {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--color-ivory-soft);
  border-radius: 6px;
}

.admin-cards {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.admin-card {
  display: block;
  padding: 1.5rem;
  background: var(--color-ivory-soft);
  border-radius: 8px;
  text-decoration: none;
  color: var(--color-navy);
  min-width: 220px;
}

.admin-card h2 {
  font-family: var(--font-display);
  margin: 0 0 0.4rem;
}

.admin-auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  background: var(--color-ivory);
}

.admin-auth-card {
  width: 100%;
  max-width: 380px;
  background: #fff;
  border: 1px solid rgba(27, 42, 65, 0.1);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  box-shadow: 0 24px 48px -28px rgba(16, 24, 35, 0.35);
  text-align: center;
}

.admin-auth-mark {
  height: 40px;
  width: auto;
  margin: 0 auto 1.25rem;
  display: block;
}

.admin-auth-card h1 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0 0 1.5rem;
}

.admin-auth-card .admin-form {
  max-width: none;
  text-align: left;
  gap: 1rem;
}

.admin-auth-card .btn-primary {
  width: 100%;
  padding: 0.75rem;
  margin-top: 0.25rem;
}

.admin-auth-hint {
  margin-top: 1.25rem;
  font-size: 0.8rem;
  color: var(--color-ink-muted);
}

.admin-error {
  color: #a03e3e;
  background: rgba(160, 62, 62, 0.08);
  padding: 0.6rem 0.8rem;
  border-radius: 4px;
}

.admin-empty {
  color: var(--color-ink-muted);
}

.admin-delete-form {
  margin-top: 2rem;
}

.btn-danger {
  background: none;
  border: 1px solid #a03e3e;
  color: #a03e3e;
  cursor: pointer;
}

.btn-danger:hover {
  background: #a03e3e;
  color: #fff;
}

@media (max-width: 720px) {
  .admin-shell {
    flex-direction: column;
  }

  .admin-sidebar {
    width: auto;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
  }

  .admin-sidebar nav {
    flex-direction: row;
  }

  .admin-signout {
    margin-top: 0;
    margin-left: auto;
  }

  .admin-main {
    padding: 1.5rem;
  }
}