:root {
  --bg: #fafaf8;
  --surface: #fff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #b91c1c;
  --radius: 8px;
}

.metadata-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin: 20px 0; }
.metadata-field label { margin-bottom: 4px; }
.metadata-suggestions { margin: 20px 0; padding: 16px; border: 1px solid var(--border); border-radius: var(--radius); }
.metadata-table { overflow-x: auto; margin: 16px 0; }
.metadata-table table { width: 100%; border-collapse: collapse; }
.metadata-table th, .metadata-table td { padding: 8px; border: 1px solid var(--border); text-align: left; white-space: pre-wrap; overflow-wrap: anywhere; }
.book-select { float: right; margin: 0 0 8px 12px; font-size: 12px; }
.choice-picker { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.choice-picker summary { cursor: pointer; padding: 8px 12px; overflow-wrap: anywhere; }
.choice-search { padding: 8px 12px; border-top: 1px solid var(--border); }
.choice-search p { margin: 8px 0 0; }
.choice-options { max-height: 280px; overflow-y: auto; padding: 8px 12px; }
.choice-options button { display: block; width: 100%; text-align: left; border: none; }
.choice-options button[aria-pressed=true] { background: #dbeafe; color: var(--accent); }
.genre-options { max-height: 280px; overflow-y: auto; padding: 8px 12px; border-top: 1px solid var(--border); }
.genre-options label { display: flex; align-items: baseline; gap: 8px; }
.genre-options input { flex-shrink: 0; }
.option-form { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.option-form label { flex: 1 1 160px; margin: 0; }

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  font: 15px/1.55 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  gap: 16px;
}
.nav .brand { font-weight: 700; font-size: 18px; }
.nav nav { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.nav .user { color: var(--muted); font-size: 13px; }
.nav .inline { display: inline; }
.nav .link { background: none; border: none; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

main { max-width: 1100px; margin: 24px auto; padding: 0 24px; }
footer { text-align: center; color: var(--muted); padding: 24px; }

h1 { font-size: 22px; margin: 0 0 16px; }
h3 { margin: 0 0 4px; font-size: 17px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.narrow { max-width: 420px; margin: 48px auto; }

label { display: block; margin: 12px 0; }
label > small { display: block; color: var(--muted); margin-top: 4px; font-size: 12px; }
input[type=text], input[type=email], input[type=password], input[type=search],
input[type=number], textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  background: #fff;
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}
textarea { resize: vertical; font-family: inherit; }

button, .btn {
  display: inline-block;
  padding: 8px 14px;
  font: inherit;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 6px;
  cursor: pointer;
  color: var(--fg);
  text-decoration: none;
}
button:hover, .btn:hover { background: #f3f4f6; text-decoration: none; }
button.primary, .btn.primary {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
button.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
button.danger { color: var(--danger); border-color: var(--danger); background: transparent; }
button.danger:hover { background: var(--danger); color: #fff; }
button:disabled { opacity: .5; cursor: not-allowed; }

.error { color: var(--danger); background: #fee2e2; padding: 10px 12px; border-radius: 6px; margin: 0 0 12px; }
.success { color: #166534; background: #dcfce7; padding: 10px 12px; border-radius: 6px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.stack { display: grid; gap: 16px; }
.danger-text { color: var(--danger); }

.toolbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; margin-bottom: 16px;
}
.search {
  display: flex;
  gap: 8px;
  flex: 1;
  align-items: center;
  min-width: 0;
}
.search input[type=search] {
  flex: 1 1 auto;
  min-width: 0;
}
.search select {
  width: auto;
  min-width: 150px;
  flex: 0 0 auto;
}
.search button {
  flex: 0 0 auto;
  white-space: nowrap;
}

.filters { margin: 0 0 12px; }
.pill {
  display: inline-block; padding: 3px 10px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 999px; font-size: 13px;
}

.books { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.book {
  display: grid; grid-template-columns: 120px 1fr; gap: 16px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.cover { display: block; background: #f3f4f6; border-radius: 6px; overflow: hidden;
         aspect-ratio: 2/3; width: 120px; }
.cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.no-cover {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%; color: var(--muted); text-transform: uppercase;
  font-size: 12px; letter-spacing: .1em;
}
.no-cover.big { width: 200px; height: 300px; border: 1px dashed var(--border); border-radius: 8px; }
.book .info { min-width: 0; }
.book .authors, .book .series, .book .meta, .book .tags, .book .desc {
  margin: 4px 0; font-size: 14px;
}
.book .meta { color: var(--muted); }
.book .fmt { text-transform: uppercase; font-size: 11px;
             background: var(--border); padding: 2px 6px; border-radius: 4px; }
.book .tag {
  display: inline-block; margin-right: 6px; padding: 1px 8px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 999px; font-size: 12px; color: var(--muted);
}
.book .desc { color: #333; }
.book .actions { margin-top: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.empty { text-align: center; color: var(--muted); padding: 48px 0; }

.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 24px 0 8px;
}

.pager-pages {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.pager-page,
.pager-nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--fg);
  text-decoration: none;
}

.pager-page:hover,
.pager-nav:hover {
  background: #f3f4f6;
  text-decoration: none;
}

.pager-page.current {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.two-col { display: grid; grid-template-columns: 220px 1fr; gap: 24px; margin-top: 16px; }
.cover-block form { margin-top: 12px; }
.cover-block button,
.cover-block input[type=file] {
  width: 100%;
}
.cover-preview { max-width: 100%; border-radius: 6px; border: 1px solid var(--border); }
.meta-form .row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.meta-form .language-field { margin: 12px 0; }
.meta-form .actions { margin-top: 16px; display: flex; gap: 8px; flex-wrap: wrap; }

dl.status { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; }
dl.status dt { color: var(--muted); }

hr { border: none; border-top: 1px solid var(--border); margin: 24px 0; }

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

.users-table th,
.users-table td {
  text-align: left;
  padding: 12px 10px;
  border-top: 1px solid var(--border);
  vertical-align: top;
}

.users-table th {
  color: var(--muted);
  font-weight: 600;
}

.admin-actions,
.password-inline {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.admin-actions form {
  margin: 0;
}

.password-inline input {
  min-width: 200px;
}

.log-output {
  margin: 0;
  padding: 14px;
  background: #111827;
  color: #e5e7eb;
  border-radius: 8px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font: 13px/1.5 ui-monospace, SFMono-Regular, monospace;
}

code { font-family: ui-monospace, SFMono-Regular, monospace; font-size: .9em;
       background: #f3f4f6; padding: 1px 5px; border-radius: 4px; }

@media (max-width: 900px) {
  main {
    margin: 16px auto;
    padding: 0 16px;
  }
  .nav {
    padding: 12px 16px;
  }
  .book {
    grid-template-columns: 96px 1fr;
    gap: 12px;
    padding: 14px;
  }
  .cover {
    width: 96px;
  }
  .users-table th,
  .users-table td {
    padding: 10px 8px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 14px;
  }
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }
  .nav .brand {
    font-size: 20px;
  }
  .nav nav {
    width: 100%;
    gap: 10px 14px;
    justify-content: flex-start;
  }
  .nav .inline {
    display: block;
  }
  .nav .inline .link {
    padding: 0;
  }
  main {
    margin: 12px auto;
    padding: 0 12px;
  }
  .card {
    padding: 16px;
  }
  .narrow {
    margin: 20px auto;
  }
  h1 {
    font-size: 20px;
  }
  .toolbar {
    align-items: stretch;
    flex-direction: column;
    gap: 12px;
  }
  .search {
    flex-direction: column;
    align-items: stretch;
  }
  .search select,
  .search button {
    width: 100%;
  }
  .filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .book {
    grid-template-columns: 1fr;
    padding: 14px;
  }
  .cover {
    width: 100%;
    max-width: 180px;
  }
  .book .info h3 {
    line-height: 1.3;
  }
  .book .actions,
  .meta-form .actions,
  .admin-actions,
  .password-inline {
    flex-direction: column;
    align-items: stretch;
  }
  .book .actions .btn,
  .meta-form .actions .btn,
  .meta-form .actions button,
  .admin-actions button,
  .password-inline button {
    width: 100%;
    text-align: center;
  }
  .password-inline input {
    min-width: 0;
  }
  .pager {
    gap: 8px;
  }
  .pager-pages {
    width: 100%;
  }
  .pager-nav {
    width: 100%;
  }
  .two-col { grid-template-columns: 1fr; }
  .no-cover.big { width: 100%; height: 280px; }
  dl.status {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  dl.status dd {
    margin: 0 0 10px;
  }
  .users-table,
  .users-table thead,
  .users-table tbody,
  .users-table tr,
  .users-table th,
  .users-table td {
    display: block;
  }
  .users-table thead {
    display: none;
  }
  .users-table tr {
    padding: 12px 0;
    border-top: 1px solid var(--border);
  }
  .users-table td {
    border: none;
    padding: 6px 0;
  }
  footer {
    padding: 18px 12px 28px;
  }
}