/* ═══════════════════════════════════════════════════════════════
   Acervo Digital — Global Stylesheet
   ═══════════════════════════════════════════════════════════════ */

:root {
  --color-primary:      #1a3a5c;
  --color-primary-light:#2563eb;
  --color-primary-hover:#1e4d7b;
  --color-accent:       #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-success:      #16a34a;
  --color-warning:      #d97706;
  --color-danger:       #dc2626;
  --color-danger-hover: #b91c1c;

  --color-bg:           #f0f4f8;
  --color-surface:      #ffffff;
  --color-border:       #d1d9e0;
  --color-border-light: #e8edf2;

  --color-text:         #1e2a38;
  --color-text-muted:   #64748b;
  --color-text-light:   #94a3b8;

  --sidebar-width:      240px;
  --header-height:      56px;

  --radius-sm:   4px;
  --radius:      8px;
  --radius-lg:   12px;

  --shadow-sm:   0 1px 3px rgba(0,0,0,.08);
  --shadow:      0 2px 8px rgba(0,0,0,.10);
  --shadow-lg:   0 4px 20px rgba(0,0,0,.14);

  --font-sans:   system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono:   "SFMono-Regular", Consolas, monospace;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* ── App shell ──────────────────────────────────────────────── */
#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width .2s ease;
  overflow: hidden;
  z-index: 100;
}

.sidebar.collapsed { width: 56px; }

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  flex-shrink: 0;
}

.sidebar-logo {
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-toggle {
  background: none;
  border: none;
  color: rgba(255,255,255,.7);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  line-height: 1;
  flex-shrink: 0;
  transition: color .15s;
}
.sidebar-toggle:hover { color: #fff; }

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: rgba(255,255,255,.75);
  text-decoration: none;
  font-size: .9rem;
  transition: background .15s, color .15s;
  white-space: nowrap;
  border-left: 3px solid transparent;
}

.nav-link:hover { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }
.nav-link.active { background: rgba(255,255,255,.12); color: #fff; border-left-color: #60a5fa; }

.nav-icon {
  width: 20px;
  text-align: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.nav-text { overflow: hidden; }

.sidebar.collapsed .nav-text,
.sidebar.collapsed .sidebar-logo { display: none; }

.sidebar.collapsed .nav-link { justify-content: center; padding: 10px; }

.nav-group-label {
  padding: 14px 16px 4px;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  white-space: nowrap;
  overflow: hidden;
}
.sidebar.collapsed .nav-group-label { display: none; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,.1);
  flex-shrink: 0;
}

.sidebar.collapsed .sidebar-footer { padding: 12px 8px; }

.user-badge {
  margin-bottom: 8px;
  overflow: hidden;
}

.user-badge .user-name {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-badge .user-role {
  display: block;
  font-size: .75rem;
  color: rgba(255,255,255,.5);
}

.sidebar.collapsed .user-badge { display: none; }

.btn-logout {
  width: 100%;
  padding: 6px 12px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.8);
  font-size: .8rem;
  cursor: pointer;
  transition: background .15s;
  white-space: nowrap;
}
.btn-logout:hover { background: rgba(255,255,255,.18); }
.sidebar.collapsed .btn-logout { padding: 6px; font-size: .7rem; }

.nav-flyout { position: relative; }
.nav-flyout-menu {
  display: none;
  position: fixed;
  min-width: 170px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 6px;
  z-index: 200;
}
.nav-flyout-item {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  font-size: .85rem;
}
.nav-flyout-item:hover { background: var(--color-bg); }

/* ── Main content ───────────────────────────────────────────── */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.page-header {
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  flex-shrink: 0;
}

.page-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

.page-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
  white-space: nowrap;
  line-height: 1.4;
}

.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover:not(:disabled) { background: var(--color-accent-hover); border-color: var(--color-accent-hover); }

.btn-secondary {
  background: #fff;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover:not(:disabled) { background: var(--color-bg); }

.btn-success {
  background: var(--color-success);
  color: #fff;
  border-color: var(--color-success);
}
.btn-success:hover:not(:disabled) { background: #15803d; }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}
.btn-danger:hover:not(:disabled) { background: var(--color-danger-hover); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}
.btn-ghost:hover:not(:disabled) { background: var(--color-bg); color: var(--color-text); }

.btn-sm { padding: 5px 10px; font-size: .8rem; }
.btn-lg { padding: 11px 24px; font-size: 1rem; }
.btn-icon { padding: 7px; }

/* ── Forms ──────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: .825rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.form-control:disabled { background: var(--color-bg); color: var(--color-text-muted); }

select.form-control { cursor: pointer; }

textarea.form-control { resize: vertical; min-height: 80px; }

.form-hint { font-size: .78rem; color: var(--color-text-muted); margin-top: 4px; }

.password-field-wrapper { position: relative; }
.password-field-wrapper .form-control { padding-right: 68px; }
.password-toggle-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 6px;
}
.password-toggle-btn:hover { color: var(--color-text); }

.form-error { font-size: .78rem; color: var(--color-danger); margin-top: 4px; }

.form-row { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }

/* Checkbox / Radio */
.check-group {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
  cursor: pointer;
  user-select: none;
}

.check-group input[type="checkbox"],
.check-group input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.check-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title { font-size: 1rem; font-weight: 600; }

.card-body { padding: 20px; }

/* ── Stats grid ─────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: .8rem;
  color: var(--color-text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* ── Tables ─────────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
}

thead th {
  background: var(--color-bg);
  padding: 10px 16px;
  text-align: left;
  font-size: .775rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

tbody td {
  padding: 12px 16px;
  font-size: .875rem;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: middle;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #f8fafc; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .02em;
}

.badge-blue    { background: #dbeafe; color: #1d4ed8; }
.badge-green   { background: #dcfce7; color: #15803d; }
.badge-yellow  { background: #fef9c3; color: #b45309; }
.badge-red     { background: #fee2e2; color: #b91c1c; }
.badge-gray    { background: #f1f5f9; color: #475569; }
.badge-orange  { background: #ffedd5; color: #c2410c; }

/* ── Modals ─────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(15,23,42,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-title { font-size: 1.05rem; font-weight: 700; }

.modal-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}
.modal-close:hover { color: var(--color-text); background: var(--color-bg); }

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-shrink: 0;
}

/* ── Alerts ─────────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.alert-error   { background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #15803d; }
.alert-info    { background: #eff6ff; border: 1px solid #bfdbfe; color: #1d4ed8; }

/* ── Spinner ─────────────────────────────────────────────────── */
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  flex-direction: column;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: .875rem;
}

/* ── Pagination ─────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: center;
  padding: 16px 0;
}

.page-btn {
  padding: 5px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: .85rem;
  cursor: pointer;
  color: var(--color-text);
  transition: background .12s;
  min-width: 34px;
  text-align: center;
}
.page-btn:hover:not(:disabled) { background: var(--color-bg); }
.page-btn.active { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.page-btn:disabled { opacity: .4; cursor: not-allowed; }

/* ── Login page ─────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #1a3a5c 0%, #2563eb 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  width: 100%;
  max-width: 400px;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 8px;
}

.login-logo-sub {
  font-size: .8rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.login-icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.6rem;
}

.password-wrapper {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: .85rem;
  padding: 0 4px;
}

/* ── Dashboard ──────────────────────────────────────────────── */
.recent-list { list-style: none; }

.recent-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: .875rem;
}

.recent-item:last-child { border-bottom: none; }

.recent-action { color: var(--color-text-muted); font-size: .8rem; }

/* ── Catalog split-view ─────────────────────────────────────── */
.catalog-container {
  display: flex;
  height: calc(100vh - var(--header-height));
  overflow: hidden;
  background: var(--color-bg);
}

.catalog-panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

#leftPanel  { width: 50%; }
#rightPanel { flex: 1; }

.catalog-divider {
  width: 6px;
  background: var(--color-border);
  cursor: col-resize;
  flex-shrink: 0;
  transition: background .15s;
  position: relative;
}
.catalog-divider:hover,
.catalog-divider.dragging { background: var(--color-accent); }

/* Viewer toolbar */
.viewer-toolbar {
  height: 44px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 12px;
  flex-shrink: 0;
}

.tool-btn {
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  cursor: pointer;
  font-size: .85rem;
  color: var(--color-text);
  transition: background .12s, border-color .12s;
  white-space: nowrap;
}
.tool-btn:hover { background: var(--color-bg); border-color: var(--color-border); }

.tool-sep { width: 1px; height: 22px; background: var(--color-border); margin: 0 4px; }

.zoom-level {
  font-size: .8rem;
  color: var(--color-text-muted);
  min-width: 44px;
  text-align: center;
}

/* Image container */
.image-container {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: #1e2a38;
  cursor: grab;
}
.image-container:active { cursor: grabbing; }

.drop-zone {
  position: absolute; inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed #4a6280;
  margin: 24px;
  border-radius: var(--radius);
  transition: border-color .15s, background .15s;
}

.drop-zone.drag-over {
  border-color: #60a5fa;
  background: rgba(96,165,250,.08);
}

.drop-zone-content {
  text-align: center;
  color: rgba(255,255,255,.6);
}

.drop-zone-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  opacity: .5;
}

.drop-zone-content p { margin-bottom: 12px; font-size: .9rem; }
.drop-zone-hint { font-size: .78rem; opacity: .6; margin-top: 8px; margin-bottom: 0; }

.image-viewport {
  position: absolute; inset: 0;
  display: none;
  overflow: hidden;
}

.image-viewport.active { display: block; }

.image-wrapper {
  transform-origin: center center;
  position: absolute;
  top: 50%;
  left: 50%;
  will-change: transform;
}

.image-wrapper img {
  display: block;
  max-width: none;
  user-select: none;
  pointer-events: none;
}

/* Thumbnail strip */
.thumbnail-strip {
  height: 80px;
  background: #111a24;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 8px;
  overflow-x: auto;
  flex-shrink: 0;
}

.thumb-item {
  height: 62px;
  width: 50px;
  flex-shrink: 0;
  border-radius: 3px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  position: relative;
  background: #1e2a38;
  transition: border-color .12s;
}

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

.thumb-item.active { border-color: #60a5fa; }

.thumb-index {
  position: absolute;
  bottom: 2px;
  right: 3px;
  font-size: .65rem;
  color: rgba(255,255,255,.7);
  background: rgba(0,0,0,.5);
  border-radius: 2px;
  padding: 0 2px;
}

/* Right panel form */
.form-panel {
  height: 100%;
  overflow-y: auto;
  background: var(--color-surface);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.form-panel-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-primary);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-light);
  flex-shrink: 0;
}

.form-section {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 14px;
}

.form-section-title {
  font-size: .775rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.autofill-badge {
  display: inline-block;
  font-size: .68rem;
  background: #dbeafe;
  color: #1d4ed8;
  border-radius: 10px;
  padding: 1px 7px;
  margin-left: 6px;
  font-weight: 600;
  vertical-align: middle;
}

.form-actions {
  display: flex;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light);
  margin-top: auto;
  flex-shrink: 0;
}

/* ── Consult page ───────────────────────────────────────────── */
.search-bar-wrapper {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px;
  flex-shrink: 0;
}

.search-input-row {
  display: flex;
  gap: 8px;
  align-items: center;
  max-width: 720px;
}

.search-input-wrap {
  position: relative;
  flex: 1;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: .95rem;
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 10px 12px 10px 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: .95rem;
  font-family: inherit;
  transition: border-color .15s, box-shadow .15s;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

.filter-bar {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.filter-bar .form-control { width: auto; }

.results-info {
  font-size: .82rem;
  color: var(--color-text-muted);
  padding: 8px 0 4px;
}

/* Results grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  padding: 20px 24px;
}

.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow .15s, transform .12s;
  box-shadow: var(--shadow-sm);
}

.result-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.result-thumb {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  background: var(--color-bg);
  display: block;
}

.result-thumb-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 2rem;
}

.result-info {
  padding: 10px 12px;
}

.result-book {
  font-size: .85rem;
  font-weight: 700;
  color: var(--color-primary);
}

.result-page {
  font-size: .78rem;
  color: var(--color-text-muted);
}

.result-name {
  font-size: .8rem;
  color: var(--color-text);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Viewer page ────────────────────────────────────────────── */
.viewer-page {
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #111a24;
  color: #fff;
}

.viewer-topbar {
  height: 48px;
  background: #1a2535;
  border-bottom: 1px solid #2a3a4e;
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 8px;
  flex-shrink: 0;
  z-index: 10;
}

.viewer-topbar .tool-btn {
  color: rgba(255,255,255,.7);
  border-color: transparent;
}
.viewer-topbar .tool-btn:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.15); color: #fff; }

.viewer-page-info {
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  margin: 0 8px;
}

.viewer-nav-btn {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  color: rgba(255,255,255,.8);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  cursor: pointer;
  font-size: .875rem;
  transition: background .12s;
}
.viewer-nav-btn:hover:not(:disabled) { background: rgba(255,255,255,.15); }
.viewer-nav-btn:disabled { opacity: .3; cursor: not-allowed; }

.viewer-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

#osd-container {
  flex: 1;
  min-width: 0;
}

.viewer-sidebar {
  width: 280px;
  background: #1a2535;
  border-left: 1px solid #2a3a4e;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
  transition: width .2s;
}

.viewer-sidebar.collapsed { width: 0; overflow: hidden; }

.viewer-sidebar-inner {
  width: 280px;
  overflow-y: auto;
  height: 100%;
}

.viewer-sidebar-header {
  padding: 14px 16px;
  border-bottom: 1px solid #2a3a4e;
  font-size: .85rem;
  font-weight: 700;
  color: rgba(255,255,255,.8);
  letter-spacing: .04em;
  text-transform: uppercase;
}

.meta-list { padding: 12px 16px; }

.meta-item { margin-bottom: 12px; }

.meta-key {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: rgba(255,255,255,.4);
  margin-bottom: 2px;
}

.meta-value {
  font-size: .875rem;
  color: rgba(255,255,255,.85);
}

.page-index {
  border-top: 1px solid #2a3a4e;
  padding: 12px;
}

.page-index-title {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: rgba(255,255,255,.4);
  margin-bottom: 8px;
  padding-left: 4px;
}

.page-index-list { list-style: none; }

.page-index-item {
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  font-size: .8rem;
  cursor: pointer;
  color: rgba(255,255,255,.65);
  transition: background .12s, color .12s;
  display: flex;
  justify-content: space-between;
}

.page-index-item:hover { background: rgba(255,255,255,.06); color: #fff; }
.page-index-item.active { background: rgba(37,99,235,.3); color: #93c5fd; }

/* Progress bar */
.viewer-progress {
  height: 3px;
  background: #2a3a4e;
  flex-shrink: 0;
}

.viewer-progress-fill {
  height: 100%;
  background: var(--color-accent);
  transition: width .2s;
}

/* Controls range */
.range-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.range-control label {
  font-size: .75rem;
  color: rgba(255,255,255,.5);
  white-space: nowrap;
  width: 64px;
}

.range-control input[type=range] {
  flex: 1;
  accent-color: var(--color-accent);
  height: 4px;
  cursor: pointer;
}

/* ── Empty state ─────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--color-text-muted);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: .4;
}

.empty-state h3 { font-size: 1.05rem; margin-bottom: 8px; color: var(--color-text); }
.empty-state p { font-size: .875rem; }

/* ── Utilities ───────────────────────────────────────────────── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.ml-auto { margin-left: auto; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mt-auto { margin-top: auto; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: .875rem; }
.text-xs { font-size: .78rem; }
.font-bold { font-weight: 700; }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --sidebar-width: 56px; }

  .sidebar { width: var(--sidebar-width); }
  .sidebar .nav-text,
  .sidebar .sidebar-logo,
  .sidebar .user-badge { display: none; }
  .sidebar .nav-link { justify-content: center; padding: 10px; }
  .sidebar .sidebar-footer { padding: 12px 8px; }

  .catalog-container { flex-direction: column; height: auto; }
  #leftPanel, #rightPanel { width: 100% !important; height: 50vh; }
  .catalog-divider { display: none; }

  .form-row { grid-template-columns: 1fr; }

  .results-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); padding: 12px; }

  .viewer-sidebar { display: none; }

  .page-body { padding: 16px; }
}

/* ── Pages grid (monolith) ─────────────────────────────────────── */
.pages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
  padding: 4px;
}
.btn-xs { padding: 2px 6px; font-size: .7rem; }

/* ── Empty state ─────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-text-muted);
}
.empty-state .empty-icon { font-size: 3rem; margin-bottom: 12px; }

/* ── Type selector ───────────────────────────────────────────────── */
.type-selector {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
@media (max-width: 700px) {
  .type-selector { grid-template-columns: repeat(2, 1fr); }
}
.type-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 14px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: border-color .15s, box-shadow .15s, background .15s;
  user-select: none;
}
.type-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
}
.type-card.active {
  border-color: var(--color-primary);
  background: rgba(59,130,246,.07);
  box-shadow: 0 0 0 3px rgba(59,130,246,.18);
}
.type-card-letter {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 6px;
}
.type-card-label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}
.type-card-count {
  font-size: .75rem;
  color: var(--color-text-light);
}

/* ── Books grid ──────────────────────────────────────────────────── */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.book-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow .15s;
}
.book-card:hover { box-shadow: var(--shadow); }
.book-card-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}
.book-number {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
}
.book-card-meta {
  font-size: .8rem;
  color: var(--color-text-muted);
}
.book-card-actions {
  display: flex;
  gap: 6px;
  margin-top: auto;
  padding-top: 8px;
  flex-wrap: wrap;
}

/* ── Registry landing ops grid ───────────────────────────────────── */
.ops-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}
@media (max-width: 700px) {
  .ops-grid { grid-template-columns: 1fr; }
}
.op-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg, var(--radius));
  padding: 28px 24px;
  text-align: center;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: border-color .15s, box-shadow .15s, background .15s;
  user-select: none;
}
.op-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
}
.op-card--wip {
  cursor: default;
  opacity: .65;
}
.op-card--wip:hover {
  border-color: var(--color-border);
  box-shadow: none;
}
.op-letter {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 12px;
}
.op-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.op-desc {
  font-size: .82rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}
.op-wip-badge {
  display: inline-block;
  margin-top: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 600;
  background: var(--color-border);
  color: var(--color-text-muted);
}

/* ── Catalog wizard ──────────────────────────────────────────────── */
.catalog-wizard {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.wizard-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 560px;
  padding: 32px;
}
.wizard-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}
.wizard-card-sub {
  font-size: .9rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}
.book-select-row {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}
.book-select-row select { flex: 1; }
.step-upload-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.selected-book-tag {
  flex: 1;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 6px;
  padding: 8px 14px;
  font-size: .9rem;
  color: var(--color-primary);
}
.upload-drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: 10px;
  padding: 36px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  background: var(--color-bg);
}
.upload-drop-zone:hover,
.upload-drop-zone.drag-over {
  border-color: var(--color-primary);
  background: #eff6ff;
}
.upload-drop-zone .dz-icon { font-size: 2.5rem; margin-bottom: 10px; color: var(--color-text-light); }
.upload-drop-zone p { margin: 0 0 12px; color: var(--color-text-muted); font-size: .9rem; }
.upload-drop-zone .dz-hint { font-size: .78rem; color: var(--color-text-light); margin-top: 8px; margin-bottom: 0; }
.file-list { margin-top: 16px; display: flex; flex-direction: column; gap: 6px; }
.file-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: .85rem;
}
.file-item-thumb {
  width: 36px;
  height: 46px;
  object-fit: cover;
  border-radius: 3px;
  flex-shrink: 0;
  background: var(--color-border);
}
.file-item-info { flex: 1; min-width: 0; }
.file-item-name { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-item-page { color: var(--color-text-muted); font-size: .78rem; }
.file-item-status { font-size: .8rem; flex-shrink: 0; font-weight: 600; }
.status-pending { color: var(--color-text-light); }
.status-sending { color: var(--color-primary); }
.status-done    { color: #16a34a; }
.status-error   { color: var(--color-danger); }
.file-item-remove {
  flex-shrink: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-light);
  font-size: 1rem;
  line-height: 1;
  padding: 2px 4px;
  border-radius: 3px;
  transition: color .15s, background .15s;
}
.file-item-remove:hover { color: var(--color-danger); background: #fef2f2; }
.file-item-remove:disabled { opacity: .35; cursor: not-allowed; }
.upload-summary {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: 8px;
  font-size: .9rem;
  display: none;
}
.upload-summary.success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; display: block; }
.upload-summary.partial { background: #fffbeb; border: 1px solid #fed7aa; color: #92400e; display: block; }
.wizard-actions { margin-top: 24px; display: flex; gap: 10px; justify-content: flex-end; }

/* ── Catalog inline new-book form ────────────────────────────────── */
.new-book-inline {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px;
  margin-top: 12px;
  display: none;
  flex-direction: column;
  gap: 10px;
}
.new-book-inline.open { display: flex; }
.new-book-inline .form-group { margin-bottom: 0; }
.new-book-inline-actions { display: flex; gap: 8px; justify-content: flex-end; }

/* ── Pages split layout ──────────────────────────────────────────── */
.pages-split {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.pages-list-panel {
  width: 260px;
  min-width: 160px;
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}
.pages-list-header {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.pages-list-count {
  font-size: .82rem;
  color: var(--color-text-muted);
  flex: 1;
}
.pages-list-body {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
  display: flex;
  flex-direction: column;
}
.pages-empty-list {
  text-align: center;
  color: var(--color-text-muted);
  padding: 32px 16px;
  font-size: .9rem;
}

/* File-explorer style rows */
.page-file-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px 7px 12px;
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: background .12s, border-color .12s;
  min-width: 0;
  user-select: none;
}
.page-file-row:hover {
  background: var(--color-bg-alt);
  border-left-color: var(--color-border);
}
.page-file-row:hover .page-file-chevron { opacity: 1; }
.page-file-row.active {
  background: rgba(59,130,246,.08);
  border-left-color: var(--color-primary);
}
.page-file-row.active .page-file-chevron { opacity: 1; color: var(--color-primary); }
.page-file-icon {
  flex-shrink: 0;
  font-size: .85rem;
  color: var(--color-text-light);
  line-height: 1;
}
.page-file-row.is-special .page-file-icon { color: #6366f1; }
.page-file-name {
  flex: 1;
  min-width: 0;
  font-size: .84rem;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}
.page-file-row.is-special .page-file-name {
  color: var(--color-text-muted);
  font-style: italic;
}
.page-file-chevron {
  flex-shrink: 0;
  font-size: .75rem;
  color: var(--color-text-light);
  opacity: 0;
  transition: opacity .12s;
}
.page-file-badges {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.page-file-indexed {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #16a34a;
  flex-shrink: 0;
}
.page-file-multi {
  font-size: .65rem;
  font-weight: 700;
  color: #fff;
  background: rgba(16,185,129,.8);
  border-radius: 3px;
  padding: 0 4px;
  line-height: 1.5;
}
.reg-tab-bar {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.reg-tab-btn {
  padding: 3px 10px;
  border-radius: 4px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: background .12s, color .12s;
}
.reg-tab-btn.active, .reg-tab-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ── Pages selection mode ─────────────────────────────────────────── */
.page-file-row .page-file-checkbox {
  display: none;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}
.select-mode .page-file-row .page-file-checkbox { display: block; }
.select-mode .page-file-row.active { background: none; border-left-color: transparent; }
.select-mode .page-file-row.selected {
  background: rgba(59,130,246,.10);
  border-left-color: var(--color-primary);
}
.bulk-archive-bar {
  display: none;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
  padding: 8px 12px;
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 6px;
  margin-bottom: 8px;
  font-size: .85rem;
}
.bulk-archive-bar.visible { display: flex; }

/* Right panel */
.pages-detail-panel {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.pages-empty-detail {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  flex-direction: column;
  gap: 8px;
}
.pages-empty-detail .icon { font-size: 3rem; }
.pages-detail-inner {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.page-image-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border);
  overflow: hidden;
}
.page-image-preview {
  flex: 1;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  padding: 16px;
}
.page-image-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  box-shadow: var(--shadow);
  border-radius: 4px;
}
.page-image-placeholder {
  color: var(--color-text-light);
  text-align: center;
}
.page-image-footer {
  padding: 10px 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--color-surface);
}
.page-edit-panel {
  width: 300px;
  min-width: 220px;
  flex-shrink: 0;
  overflow-y: auto;
  padding: 20px;
}
.detail-section-title {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}
.detail-row {
  margin-bottom: 12px;
}
.detail-label {
  font-size: .72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 2px;
}
.detail-value {
  font-size: .88rem;
  color: var(--color-text);
}