:root {
  color-scheme: light;
  font-family: var(--font-ui);
  line-height: 1.5;

  /* Library visual system — Hybrid Editorial + Functional UI. */
  --font-editorial: Georgia, Cambria, "Times New Roman", serif;
  --font-ui: "Avenir Next", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --paper: #f8f5ee;
  --paper-strong: #f1ece2;
  --surface: #fffdf8;
  --surface-muted: #f4f1ea;
  --ink: #1f2a44;
  --ink-soft: #3f4960;
  --muted-ink: #6d7481;
  --accent: #b5533c;
  --accent-strong: #93412f;
  --sage: #6b7f6b;
  --success: #2f7d4c;
  --success-bg: #e8f3e8;
  --warning-ink: #8a5a16;
  --warning-bg: #fbf0d9;
  --error-ink: #a63a35;
  --error-bg: #f9e7e3;
  --line: #ddd6ca;
  --line-strong: #c9c0b2;
  --focus: #315f8c;

  --radius-sm: 0.5rem;
  --radius-md: 0.8rem;
  --radius-lg: 1.15rem;
  --radius-pill: 999px;
  --shadow-sm: 0 4px 14px rgb(31 42 68 / 0.05);
  --shadow-md: 0 12px 34px rgb(31 42 68 / 0.08);
  --shadow-cover: 0 14px 30px rgb(31 42 68 / 0.16);
  --content-wide: 76rem;

  /* Backward-compatible aliases while the rest of the UI migrates to tokens. */
  --bg: var(--paper);
  --card: var(--surface);
  --text: var(--ink);
  --muted: var(--muted-ink);
  --primary: var(--accent);
  --error: var(--error-ink);
  --warning: var(--warning-ink);
  --border: var(--line);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.environment-banner {
  background: #111827;
  color: #f9fafb;
  padding: 0.65rem 1rem;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: baseline;
}

.environment-banner-meta {
  color: #d1d5db;
  font-weight: 400;
}

.page {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1rem;
}

.page.catalog-page {
  max-width: 56rem;
  padding-top: 0.75rem;
}

.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;
}

.catalog-toolbar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  padding: 0.65rem 0.85rem 0.75rem;
  margin-bottom: 0.65rem;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
}

.catalog-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.catalog-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.25;
}

.catalog-filters {
  display: grid;
  gap: 0.45rem;
}

.catalog-search-field-compact {
  display: block;
  margin: 0;
}

.catalog-search-field-compact input[type="search"] {
  width: 100%;
  font-size: 1.05rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.65rem;
  line-height: 1.25;
}

.chip-bar {
  display: grid;
  gap: 0.35rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.catalog-found {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.catalog-empty {
  padding: 0.75rem 0.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  align-items: center;
}

.catalog-empty-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.button.compact {
  width: auto;
  min-width: 0;
  padding: 0.45rem 0.85rem;
  font-size: 0.95rem;
}

.catalog-live {
  position: relative;
}

.catalog-loading-bar {
  height: 0.2rem;
  margin: 0.35rem 0 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 15%, transparent);
  overflow: hidden;
}

.catalog-loading-bar[hidden] {
  display: none;
}

.catalog-loading-bar-fill {
  display: block;
  height: 100%;
  width: 40%;
  border-radius: inherit;
  background: var(--primary);
  animation: catalog-loading-slide 0.9s ease-in-out infinite;
}

@keyframes catalog-loading-slide {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(280%); }
}

@media (max-width: 40rem) {
  .catalog-title-row {
    align-items: flex-start;
  }

  .catalog-title {
    font-size: 1.05rem;
  }

  .catalog-grid {
    grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr));
    gap: 0.65rem;
  }

  .book-card {
    padding: 0.55rem;
  }

  .book-card h2 {
    font-size: 0.95rem;
  }

  .catalog-table th:nth-child(4),
  .catalog-table td:nth-child(4),
  .catalog-table th:nth-child(5),
  .catalog-table td:nth-child(5) {
    display: none;
  }
}

.library-nav {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
}

.library-nav a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

.library-logout-form {
  margin: 0;
  margin-left: auto;
}

.library-logout-form .link-button {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  padding: 0;
  text-decoration: underline;
}

.actions-row {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.catalog-filters select,
.edition-edit-section select,
.edition-edit-section textarea {
  width: 100%;
  font-size: 1.125rem;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11.5rem, 1fr));
  gap: 0.75rem;
  margin-top: 0;
}

.book-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
}

.book-card a {
  display: block;
  padding: 1rem;
  color: inherit;
  text-decoration: none;
}

.book-card h2 {
  font-size: 1rem;
  margin: 0.5rem 0;
}

.book-card-cover {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: 0.5rem;
}

.book-card-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 2 / 3;
  background: #eef2ff;
  color: var(--muted);
  border-radius: 0.5rem;
  font-size: 0.875rem;
}

.completeness-badge {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-complete {
  background: #dcfce7;
  color: #166534;
}

.badge-partial {
  background: #fef3c7;
  color: #92400e;
}

.badge-minimal {
  background: #fee2e2;
  color: #991b1b;
}

.provenance-block,
.annotation-block,
.edition-section,
.edition-edit-section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.empty-state {
  margin-top: 0.5rem;
  text-align: left;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}

.pagination .button {
  width: auto;
  min-width: 8rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.25rem;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

h1 {
  margin-top: 0;
  font-size: 1.75rem;
}

.stack {
  display: grid;
  gap: 0.75rem;
}

label {
  font-weight: 600;
}

input[type="text"],
input[type="password"],
input[type="number"],
textarea {
  width: 100%;
  font-size: 1.125rem;
  padding: 0.875rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
}

textarea {
  min-height: 5.5rem;
  resize: vertical;
}

.button-row {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .button-row {
    grid-template-columns: 1fr 1fr;
  }
}

.primary,
.secondary,
.button {
  display: inline-block;
  width: 100%;
  text-align: center;
  font-size: 1.125rem;
  padding: 0.95rem 1rem;
  border-radius: 0.75rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.primary,
.button.primary {
  background: var(--primary);
  color: white;
}

.secondary {
  background: #eef2ff;
  color: var(--primary);
  margin-top: 0.75rem;
}

.hint,
.meta,
.tech {
  color: var(--muted);
}

.error {
  color: var(--error);
  font-weight: 600;
}

.warning {
  color: var(--warning);
  background: #fffbeb;
  padding: 0.75rem;
  border-radius: 0.75rem;
}

.conflict {
  margin: 1rem 0;
  padding: 0.75rem;
  border-left: 4px solid #f59e0b;
  background: #fffbeb;
}

.cover {
  display: block;
  max-width: 10rem;
  margin: 1rem auto;
  border-radius: 0.5rem;
}

.radio {
  display: block;
  margin: 0.5rem 0;
}

.facts {
  padding-left: 1.25rem;
}

.success .title {
  font-size: 1.25rem;
  font-weight: 700;
}

.nav-badge {
  display: inline-block;
  margin-left: 0.25rem;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: #dbeafe;
  color: #1e40af;
  font-size: 0.75rem;
  font-weight: 700;
}

.review-home-link {
  margin: 0.75rem 0 0;
}


.isbn-badge.isbn-valid {
  background: #dcfce7;
  color: #166534;
}

.isbn-badge.isbn-conflict {
  background: #fef3c7;
  color: #92400e;
}

.isbn-badge.isbn-absent {
  background: #e5e7eb;
  color: #374151;
}

.evidence-gallery {
  display: grid;
  gap: 1rem;
}

.evidence-item {
  margin: 0;
}

.evidence-image {
  display: block;
  width: 100%;
  max-width: 20rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
}

.journal-text,
.audit-values {
  margin: 0;
  padding: 0.75rem;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.875rem;
}

.ready-plan-banner {
  border-color: #86efac;
  background: #f0fdf4;
}

.audit-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.audit-list li {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.workspace-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 0;
}

.workspace-stats div {
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--ink) 9%, var(--line));
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.workspace-stats dt {
  min-height: 2.45em;
  color: var(--muted-ink);
  font-size: 0.76rem;
  line-height: 1.25;
}

.workspace-stats dd {
  margin: 0.35rem 0 0;
  color: var(--ink);
  font-family: var(--font-editorial);
  font-size: clamp(1.25rem, 2.6vw, 1.65rem);
  font-weight: 700;
  line-height: 1;
}

.workspace-queue {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.7rem;
}

.workspace-queue-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: start;
  padding: 1rem 1.05rem;
  border: 1px solid color-mix(in srgb, var(--ink) 10%, var(--line));
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.workspace-queue-item h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-editorial);
  font-size: 1.2rem;
  line-height: 1.15;
}

.workspace-missing {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.55rem;
  margin: 0;
  padding: 0;
  color: var(--muted);
  list-style: none;
  font-size: 0.8rem;
}

.workspace-queue-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-self: center;
}

.workspace-stats-heading {
  margin: 0 0 0.65rem;
  color: var(--ink-soft);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cover-asset-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 1rem;
  display: grid;
  gap: 0.35rem;
}

.cover-status-badge {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: #fef3c7;
  color: #92400e;
  font-size: 0.75rem;
  font-weight: 600;
}

.location-filter {
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
}

.location-filter-grid {
  display: grid;
  gap: 0.5rem;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.view-toggle {
  display: flex;
  gap: 0.5rem;
}

.view-toggle .is-active {
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 700;
}

.catalog-results.catalog-view-shelf .catalog-list {
  display: none;
}

.catalog-results.catalog-view-list .catalog-shelf {
  display: none;
}

.catalog-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  overflow: hidden;
}

.catalog-table th,
.catalog-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}

.catalog-list-cover img {
  width: 3rem;
  height: 4rem;
  object-fit: cover;
  border-radius: 0.35rem;
}

.book-user-card .cover {
  max-width: 16rem;
  width: 100%;
  border-radius: 0.75rem;
  margin-bottom: 1rem;
}

.admin-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.cover-missing {
  max-width: 16rem;
  min-height: 12rem;
  display: grid;
  place-items: center;
}

.catalog-search-field input[type="search"] {
  width: 100%;
  font-size: 1.05rem;
}

.filter-toggles {
  display: grid;
  gap: 0.35rem;
}

.toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.filter-toggle {
  border: 1px solid var(--border);
  background: #fff;
  color: inherit;
  border-radius: 999px;
  padding: 0.28rem 0.65rem;
  font: inherit;
  font-size: 0.9rem;
  line-height: 1.2;
  cursor: pointer;
}

.filter-toggle.is-active {
  border-color: var(--primary);
  color: var(--primary);
  font-weight: 700;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
}

.view-segmented {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  padding: 0.15rem 0.35rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fafafa;
}

.view-option {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.15rem 0.2rem;
}

.view-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.view-marker {
  width: 0.85rem;
  height: 0.85rem;
  border: 2px solid var(--border);
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
}

.view-option.is-active .view-marker,
.view-option:has(input:checked) .view-marker {
  border-color: var(--primary);
}

.view-option.is-active .view-marker::after,
.view-option:has(input:checked) .view-marker::after {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 999px;
  background: var(--primary);
}

#catalog-live-region.is-loading {
  opacity: 1;
}

#catalog-live-region.is-loading #catalog-results,
#catalog-live-region.is-loading .catalog-empty {
  opacity: 0.72;
  transition: opacity 120ms ease;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   PROJECT-LIBRARY-VISUAL-SYSTEM-IMPLEMENTATION-001 — core reader surfaces
   -------------------------------------------------------------------------- */

html {
  background: var(--paper);
}

body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 88% -8%, rgb(181 83 60 / 0.08), transparent 28rem),
    linear-gradient(180deg, #fcfaf5 0, var(--paper) 18rem);
  color: var(--ink);
  font-family: var(--font-ui);
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

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

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 72%, white);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.library-header {
  border-bottom: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  background: rgb(248 245 238 / 0.94);
  box-shadow: 0 1px 0 rgb(255 255 255 / 0.7);
}

.library-header-inner {
  width: min(calc(100% - 2rem), var(--content-wide));
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 5rem;
}

.library-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  flex: 0 0 auto;
}

.library-brand:hover {
  color: var(--ink);
}

.library-brand-mark {
  width: 2.35rem;
  height: 2.35rem;
  flex: 0 0 auto;
}

.library-brand-copy {
  display: grid;
  line-height: 1;
}

.library-brand-name {
  font-family: var(--font-editorial);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.library-brand-tagline {
  margin-top: 0.28rem;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.library-header .library-nav {
  margin: 0 0 0 auto;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.25rem;
}

.library-header .library-nav > a,
.library-header .library-logout-form .link-button {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-pill);
  padding: 0.55rem 0.8rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
  transition: background-color 140ms ease, color 140ms ease;
}

.library-header .library-nav > a:hover,
.library-header .library-logout-form .link-button:hover {
  background: var(--surface-muted);
  color: var(--ink);
}

.library-header .library-logout-form {
  margin-left: 0.25rem;
}

.library-header .library-logout-form .link-button {
  border: 1px solid var(--line);
  background: var(--surface);
  cursor: pointer;
}

.library-mobile-menu {
  display: none;
}

.management-page {
  max-width: 58rem;
  margin: 0 auto;
}

.management-hub {
  display: grid;
  gap: 1rem;
}

.management-hub-hero,
.management-hub-group {
  margin-top: 0;
}

.management-hub-hero {
  padding: clamp(1.2rem, 2.8vw, 1.8rem);
}

.management-hub-group {
  padding: 1.1rem;
}

.management-hub-group h2 {
  margin: 0 0 0.8rem;
  font-size: 1.15rem;
}

.management-hub-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0.7rem;
}

.management-hub-link {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}

.management-hub-link:hover {
  border-color: var(--line-strong);
  background: var(--surface-muted);
  color: var(--ink);
}

.management-hub-link strong {
  font-size: 1rem;
}

.management-hub-link span {
  color: var(--muted);
  line-height: 1.45;
}

.page {
  padding: 1.4rem 1rem 3rem;
}

.page.catalog-page {
  max-width: var(--content-wide);
  padding-top: 1.5rem;
}

h1, h2, h3,
.catalog-title,
.book-card h2 {
  color: var(--ink);
}

.catalog-toolbar {
  padding: 1.05rem 1.15rem 1.15rem;
  margin-bottom: 1rem;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border-color: color-mix(in srgb, var(--line) 85%, transparent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.catalog-title-row {
  margin-bottom: 0.75rem;
}

.catalog-title {
  font-family: var(--font-editorial);
  font-size: clamp(1.45rem, 2vw, 1.9rem);
  letter-spacing: -0.025em;
}

.catalog-search-field-compact input[type="search"],
.catalog-search-field input[type="search"] {
  min-height: 3rem;
  border-color: var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.8);
}

.catalog-search-field-compact input[type="search"]::placeholder {
  color: color-mix(in srgb, var(--muted) 80%, transparent);
}

.filter-toggle,
.view-segmented {
  background: var(--surface);
  border-color: var(--line);
}

.filter-toggle {
  min-height: 2.2rem;
  padding-inline: 0.75rem;
  color: var(--ink-soft);
}

.filter-toggle:hover {
  border-color: var(--line-strong);
  background: var(--surface-muted);
}

.filter-toggle.is-active {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  color: var(--accent-strong);
  background: color-mix(in srgb, var(--accent) 9%, var(--surface));
}

.view-option.is-active .view-marker,
.view-option:has(input:checked) .view-marker {
  border-color: var(--accent);
}

.view-option.is-active .view-marker::after,
.view-option:has(input:checked) .view-marker::after {
  background: var(--accent);
}

.catalog-grid {
  grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr));
  gap: 1rem;
}

.book-card {
  background: var(--surface);
  border-color: var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.book-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 24%, var(--line));
  box-shadow: var(--shadow-md);
}

.book-card a {
  padding: 0.85rem;
}

.book-card-cover,
.book-card-placeholder {
  border-radius: 0.72rem;
  background: var(--paper-strong);
  box-shadow: 0 6px 16px rgb(31 42 68 / 0.08);
}

.book-card-placeholder {
  color: var(--muted);
  font-family: var(--font-editorial);
}

.book-card h2 {
  margin: 0.75rem 0 0.35rem;
  font-family: var(--font-editorial);
  font-size: 1.12rem;
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.book-card .meta {
  margin: 0.24rem 0;
  line-height: 1.35;
}

.catalog-table {
  border-color: var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.catalog-table th {
  color: var(--muted);
  background: var(--surface-muted);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.catalog-table td {
  background: var(--surface);
}

.catalog-table tr:last-child td {
  border-bottom: 0;
}

.pagination {
  margin-top: 1.35rem;
}

.card {
  border-color: var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.primary,
.button.primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 5px 14px rgb(181 83 60 / 0.16);
}

.primary:hover,
.button.primary:hover {
  background: var(--accent-strong);
  color: white;
}

.secondary,
.button.secondary {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  box-shadow: none;
}

.secondary:hover,
.button.secondary:hover {
  border-color: var(--line-strong);
  background: var(--surface-muted);
  color: var(--ink);
}

.book-context-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1rem;
  padding: 0.8rem 1rem;
}

.book-context-card .secondary {
  width: auto;
  margin: 0;
}

.book-context-qr-form {
  margin: 0;
}

.book-context-qr-form .secondary {
  width: auto;
}

.book-detail-card {
  margin-top: 1rem;
  padding: clamp(1rem, 2vw, 1.65rem);
}

.book-hero {
  display: grid;
  grid-template-columns: minmax(10rem, 15rem) minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: start;
}

.book-cover-frame {
  position: relative;
}

.book-detail-card .book-cover-frame .cover,
.book-detail-card .book-cover-frame .cover-missing {
  width: 100%;
  max-width: none;
  margin: 0;
  border-radius: 0.8rem;
  box-shadow: var(--shadow-cover);
}

.book-detail-card .book-cover-frame .cover-missing {
  min-height: 20rem;
  background: var(--paper-strong);
  color: var(--muted);
}

.book-identity {
  min-width: 0;
  padding-top: 0.35rem;
}

.book-identity h1 {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-editorial);
  font-size: clamp(2.25rem, 5vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.book-subtitle {
  margin: 0.8rem 0 0;
  max-width: 42rem;
  color: var(--ink-soft);
  font-family: var(--font-editorial);
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  line-height: 1.25;
}

.book-byline {
  margin: 0.85rem 0 0;
  color: var(--ink);
  font-weight: 650;
}

.book-detail-card .book-facts-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
}

.book-detail-card .book-facts-panel li {
  color: var(--muted);
  font-size: 0.9rem;
}

.book-detail-card .annotation-block {
  margin-top: 1.5rem;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--line);
}

.book-detail-card .annotation-block h2,
.copy-section h2,
.technical-surface h2 {
  margin: 0 0 0.55rem;
  font-family: var(--font-editorial);
  font-size: 1.35rem;
}

.book-detail-card .annotation-block p {
  max-width: 70ch;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.65;
}

.copy-section {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.copy-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.copy-list > li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-muted);
}

.copy-list .button {
  width: auto;
  margin: 0 0 0 auto;
  padding: 0.55rem 0.8rem;
  font-size: 0.9rem;
}

.technical-surface {
  margin-top: 1.5rem;
  padding: 1rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface-muted) 78%, white);
}

.technical-surface::before {
  content: "Техническая информация";
  display: block;
  margin-bottom: 0.6rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.admin-tools {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.admin-tools .button {
  width: auto;
  margin: 0;
}

.environment-banner {
  background: var(--ink);
  color: var(--paper);
}

.environment-banner-meta {
  color: color-mix(in srgb, var(--paper) 72%, transparent);
}

.warning,
.conflict {
  color: var(--warning-ink);
  background: var(--warning-bg);
}

.error {
  color: var(--error-ink);
}

.ready-plan-banner {
  border-color: color-mix(in srgb, var(--success) 42%, var(--line));
  background: var(--success-bg);
}

@media (max-width: 48rem) {
  .library-header-inner {
    width: min(calc(100% - 1rem), var(--content-wide));
    min-height: auto;
    padding: 0.7rem 0;
    align-items: center;
    flex-wrap: nowrap;
  }

  .library-brand-mark {
    width: 2.05rem;
    height: 2.05rem;
  }

  .library-brand-name {
    font-size: 1.45rem;
  }

  .library-brand-tagline {
    display: none;
  }

  .library-header .library-nav-desktop {
    display: none;
  }

  .library-mobile-menu {
    display: block;
    position: relative;
    margin-left: auto;
  }

  .library-mobile-menu > summary {
    min-height: 2.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 0.8rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    background: var(--surface);
    color: var(--ink-soft);
    font-weight: 700;
    cursor: pointer;
    list-style: none;
  }

  .library-mobile-menu > summary::-webkit-details-marker {
    display: none;
  }

  .library-mobile-menu > summary::after {
    content: "▾";
    font-size: 0.8em;
  }

  .library-mobile-menu[open] > summary::after {
    content: "▴";
  }

  .library-mobile-menu-panel {
    position: absolute;
    z-index: 30;
    top: calc(100% + 0.5rem);
    right: 0;
    width: min(16rem, calc(100vw - 1rem));
    display: grid;
    gap: 0.2rem;
    padding: 0.45rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-md);
  }

  .library-mobile-menu-panel > a,
  .library-mobile-menu-panel .link-button {
    width: 100%;
    min-height: 2.75rem;
    display: flex;
    align-items: center;
    padding: 0.55rem 0.7rem;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--ink-soft);
    font: inherit;
    font-weight: 650;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
  }

  .library-mobile-menu-panel > a:hover,
  .library-mobile-menu-panel .link-button:hover {
    background: var(--surface-muted);
    color: var(--ink);
  }

  .library-mobile-menu-panel .library-logout-form {
    margin: 0;
  }

  .management-hub-links {
    grid-template-columns: minmax(0, 1fr);
  }

  .page.catalog-page {
    padding-inline: 0.75rem;
  }

  .catalog-toolbar {
    padding: 0.85rem;
  }

  .catalog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
  }

  .book-card a {
    padding: 0.6rem;
  }

  .book-card h2 {
    font-size: 1rem;
  }

  .book-hero {
    grid-template-columns: minmax(7rem, 9rem) minmax(0, 1fr);
    gap: 1rem;
  }

  .book-identity h1 {
    font-size: clamp(1.8rem, 8vw, 2.7rem);
  }

  .book-subtitle {
    font-size: 1.05rem;
  }

  .book-detail-card .book-cover-frame .cover-missing {
    min-height: 12rem;
  }

  .copy-list > li {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .copy-list .button {
    margin-left: 0;
  }
}

@media (max-width: 34rem) {
  .book-hero {
    grid-template-columns: 1fr;
  }

  .book-cover-frame {
    width: min(56vw, 12rem);
  }

  .book-identity {
    padding-top: 0;
  }

  .book-context-card {
    align-items: stretch;
    flex-direction: column;
  }

  .book-context-card .secondary,
  .book-context-qr-form .secondary {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* Mobile containment guard: no visual-system primitive may widen the viewport. */
@media (max-width: 48rem) {
  html,
  body {
    max-width: 100%;
    overflow-x: hidden;
  }

  .page,
  .catalog-toolbar,
  .catalog-live,
  .catalog-results,
  .catalog-shelf,
  .catalog-grid,
  .book-card,
  .book-card a {
    min-width: 0;
    max-width: 100%;
  }

  .catalog-title-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .view-segmented {
    width: max-content;
    max-width: 100%;
  }

  .catalog-grid {
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .book-card h2,
  .book-card .meta {
    overflow-wrap: anywhere;
  }
}

/* Phase 2 — functional, form and operator surfaces (#282). */
.workflow-card,
.operator-section,
.form-section {
  position: relative;
  margin-top: 1rem;
}

.workflow-card h1,
.workflow-card h2,
.operator-section h2,
.form-section h2 {
  color: var(--ink);
}

.workflow-card h1 {
  margin-bottom: 0.45rem;
  font-family: var(--font-editorial);
  font-size: clamp(1.8rem, 4vw, 2.55rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.workflow-card-compact {
  max-width: 34rem;
  margin-inline: auto;
  padding: clamp(1.25rem, 3vw, 2rem);
}

.workflow-card-wide {
  padding: clamp(1.15rem, 2.4vw, 1.8rem);
}

.workflow-header {
  padding: 1rem 1.15rem;
}

.workflow-intro {
  max-width: 58ch;
  margin: 0 0 1rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

.workflow-form {
  gap: 0.9rem;
}

.workflow-form > label,
.workflow-form fieldset > legend {
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 700;
}

.workflow-form input[type="text"],
.workflow-form input[type="password"],
.workflow-form input[type="number"],
.workflow-form input[type="file"],
.workflow-form textarea,
.workflow-form select {
  width: 100%;
  min-height: 2.85rem;
  margin-top: 0.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  box-shadow: inset 0 1px 1px rgb(31 42 68 / 0.03);
}

.workflow-form input[type="file"] {
  padding: 0.7rem;
}

.workflow-form :disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.workflow-form-dense {
  gap: 1rem;
}

.option-panel,
.conditional-panel {
  margin: 0;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-muted);
}

.option-panel legend {
  padding-inline: 0.25rem;
}

.option-panel .radio,
.option-panel .checkbox {
  padding: 0.35rem 0;
  font-weight: 600;
}

.technical-disclosure {
  margin: 0.85rem 0;
  padding: 0.7rem 0.85rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--surface-muted);
}

.status-panel {
  margin-block: 0.75rem;
  padding: 0.8rem 0.95rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-weight: 600;
}

.status-warning {
  border-color: color-mix(in srgb, var(--warning-ink) 24%, var(--line));
  background: var(--warning-bg);
  color: var(--warning-ink);
}

.status-error {
  border-color: color-mix(in srgb, var(--error-ink) 24%, var(--line));
  background: var(--error-bg);
  color: var(--error-ink);
}

.status-success {
  border-color: color-mix(in srgb, var(--success) 24%, var(--line));
  background: var(--success-bg);
  color: var(--success);
}

.workflow-actions,
.decision-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: flex-end;
}

.workflow-actions > *,
.decision-actions > * {
  min-width: 0;
  flex: 1 1 12rem;
  margin: 0;
}

.workflow-actions .button,
.workflow-actions .primary,
.workflow-actions .secondary,
.decision-actions .button {
  width: 100%;
  margin: 0;
}

.workflow-primary {
  margin-top: 0.25rem;
}

.workflow-secondary-action {
  margin-top: 0.9rem;
}

.workflow-secondary-action .secondary {
  width: auto;
  margin-top: 0;
}

.workflow-success {
  border-color: color-mix(in srgb, var(--success) 28%, var(--line));
}

.workflow-success .title {
  font-family: var(--font-editorial);
  color: var(--ink);
}

.technical-inline {
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.form-section,
.operator-section {
  padding: 1.05rem 1.15rem;
}

.form-section > h2,
.operator-section > h2,
.operator-technical-panel > h2 {
  margin: 0 0 0.7rem;
  font-family: var(--font-editorial);
  font-size: 1.35rem;
  line-height: 1.15;
}

.operator-technical-panel {
  border-style: dashed;
  border-color: var(--line-strong);
  background: color-mix(in srgb, var(--surface-muted) 76%, var(--surface));
  box-shadow: none;
}

.operator-technical-panel > h2 {
  color: var(--ink-soft);
}

.decision-surface {
  border-color: color-mix(in srgb, var(--accent) 22%, var(--line));
  box-shadow: var(--shadow-md);
}

.decision-actions form {
  display: grid;
  gap: 0.5rem;
}

.danger,
.button.danger {
  border: 1px solid color-mix(in srgb, var(--error-ink) 36%, var(--line));
  background: var(--surface);
  color: var(--error-ink);
  box-shadow: none;
}

.danger:hover,
.button.danger:hover {
  background: var(--error-bg);
  color: var(--error-ink);
}

.workflow-empty {
  padding: 1.2rem;
  border-style: dashed;
  background: var(--surface-muted);
}

.cover-candidate {
  border-color: var(--line);
  background: var(--surface);
}

.cover-candidate.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 16%, transparent);
}

@media (max-width: 48rem) {
  .workflow-card,
  .operator-section,
  .form-section,
  .option-panel,
  .conditional-panel,
  .status-panel,
  .technical-disclosure {
    min-width: 0;
    max-width: 100%;
  }

  .workflow-card-compact,
  .workflow-card-wide,
  .workflow-header,
  .form-section,
  .operator-section {
    padding: 0.9rem;
  }

  .workflow-actions,
  .decision-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .workflow-actions > *,
  .decision-actions > * {
    width: 100%;
  }

  .workflow-secondary-action .secondary {
    width: 100%;
  }

  .workflow-form input,
  .workflow-form select,
  .workflow-form textarea,
  .workflow-form button,
  .workflow-form .button,
  .decision-actions input,
  .decision-actions button {
    max-width: 100%;
  }
}

/* Phase 3 — Library Home and Catalog Workspace (#294). */
.library-home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(16rem, 0.75fr);
  gap: clamp(1.25rem, 4vw, 3rem);
  align-items: end;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border-color: color-mix(in srgb, var(--accent) 18%, var(--line));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface) 92%, var(--paper-strong)), var(--surface));
  box-shadow: var(--shadow-md);
}

.library-home-hero h1 {
  max-width: 12ch;
  margin-bottom: 0.55rem;
  font-family: var(--font-editorial);
  font-size: clamp(2.25rem, 7vw, 4.4rem);
  line-height: 0.96;
  letter-spacing: -0.045em;
}

.library-home-intro {
  max-width: 54ch;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.65;
}

.library-home-actions {
  margin: 0;
  align-content: end;
}

.library-home-actions .button {
  margin: 0;
}

.library-home-actions .primary {
  box-shadow: 0 9px 22px color-mix(in srgb, var(--accent) 18%, transparent);
}

.review-home-link a {
  display: inline-flex;
  margin-top: 0.25rem;
  padding: 0.35rem 0.65rem;
  border: 1px solid color-mix(in srgb, var(--sage) 26%, var(--line));
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--sage) 10%, var(--surface));
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.workspace-hero {
  overflow: hidden;
  padding: clamp(1.35rem, 3vw, 2rem);
  border-color: color-mix(in srgb, var(--ink) 12%, var(--line));
  background: linear-gradient(150deg, var(--surface), color-mix(in srgb, var(--paper-strong) 56%, var(--surface)));
}

.workspace-hero h1 {
  margin-bottom: 0.4rem;
}

.workspace-section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.workspace-section-heading h2 {
  margin: 0;
}

.workspace-metric-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.workspace-metric-group {
  min-width: 0;
  padding: 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-muted);
}






.workspace-session {
  border-color: color-mix(in srgb, var(--sage) 22%, var(--line));
  background: color-mix(in srgb, var(--sage) 7%, var(--surface));
}

.workspace-session-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.workspace-session-metrics p {
  margin: 0;
  padding: 0.75rem 0.85rem;
  border-left: 3px solid color-mix(in srgb, var(--sage) 55%, var(--line));
  background: color-mix(in srgb, var(--surface) 86%, transparent);
}

.workspace-session-metrics strong {
  display: block;
  margin-top: 0.2rem;
  color: var(--ink);
  font-family: var(--font-editorial);
  font-size: 1.3rem;
}

.workspace-filter-form {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  gap: 0.75rem;
  align-items: end;
}

.workspace-filter-form .button {
  min-height: 2.85rem;
  margin: 0;
  white-space: nowrap;
}

.workspace-queue-card {
  padding-bottom: 1.1rem;
}




.workspace-queue-authors {
  margin: 0.2rem 0 0;
}

.workspace-queue-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.7rem;
  margin-top: 0.65rem;
}

.workspace-queue-facts .meta {
  margin: 0;
  padding: 0.24rem 0.5rem;
  border-radius: var(--radius-pill);
  background: var(--surface-muted);
  font-size: 0.78rem;
}

.workspace-queue-facts .workspace-completeness {
  background: color-mix(in srgb, var(--sage) 11%, var(--surface));
  color: var(--ink-soft);
}

.workspace-missing-block {
  margin-top: 0.7rem;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--line);
}

.workspace-missing-label {
  margin: 0 0 0.25rem;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}


.workspace-missing li::before {
  content: "·";
  margin-right: 0.3rem;
  color: var(--accent);
}


.workspace-queue-actions .button {
  width: auto;
  min-width: 6.5rem;
  margin: 0;
  padding: 0.7rem 0.9rem;
  font-size: 0.95rem;
}

.workspace-queue-empty {
  min-height: 8rem;
  display: grid;
  align-content: center;
}

.workspace-queue-empty h2,
.workspace-queue-empty p {
  margin-block: 0.15rem;
}

@media (max-width: 48rem) {
  .library-home-hero,
  .workspace-metric-groups,
  .workspace-session-metrics,
  .workspace-filter-form,
  .workspace-queue-item {
    grid-template-columns: minmax(0, 1fr);
  }

  .library-home-hero {
    align-items: stretch;
    padding: 1.15rem;
  }

  .library-home-hero h1 {
    font-size: clamp(2rem, 12vw, 3.1rem);
  }

  .workspace-metric-group,
  .workspace-stats div,
  .workspace-queue-item {
    min-width: 0;
  }

  .workspace-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .workspace-filter-form .button,
  .workspace-queue-actions .button {
    width: 100%;
  }

  .workspace-queue-facts,
  .workspace-missing {
    overflow-wrap: anywhere;
  }
}