/* ══════════════ TOKENS ══════════════ */
:root {
  --bg:              oklch(96.5% 0.006 255);
  --surface:         oklch(99.2% 0.003 255);

  --primary:         oklch(30% 0.055 165);
  --primary-hover:   oklch(25% 0.065 165);
  --primary-pale:    oklch(95.5% 0.014 165);
  --primary-faint:   oklch(97.5% 0.007 165);
  --primary-muted:   oklch(55% 0.04 165);

  --accent:          oklch(48% 0.10 30);
  --accent-hover:    oklch(43% 0.11 30);
  --accent-pale:     oklch(96% 0.022 30);

  --text:            oklch(17% 0.014 255);
  --text-muted:      oklch(52% 0.010 255);
  --text-faint:      oklch(74% 0.007 255);

  --border:          oklch(89% 0.007 255);
  --border-strong:   oklch(80% 0.010 255);

  --danger:          oklch(42% 0.16 25);
  --danger-pale:     oklch(96% 0.028 25);
  --warning:         oklch(56% 0.12 68);
  --warning-pale:    oklch(96% 0.025 68);
  --success:         oklch(40% 0.09 150);
  --success-pale:    oklch(96% 0.022 150);

  --level-gul:       oklch(76% 0.13 88);
  --level-rod:       oklch(52% 0.17 25);
  --level-bla:       oklch(52% 0.12 255);

  --shadow-xs:  0 1px 3px  oklch(17% 0.014 255 / 0.05);
  --shadow-sm:  0 2px 8px  oklch(17% 0.014 255 / 0.07);
  --shadow-md:  0 4px 20px oklch(17% 0.014 255 / 0.09);
  --shadow-lg:  0 12px 48px oklch(17% 0.014 255 / 0.13);

  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
}

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

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 0.9375rem;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  -webkit-tap-highlight-color: transparent;
  font-optical-sizing: auto;
}

/* ══════════════ LOGIN ══════════════ */
.login-screen {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}

.login-logo {
  width: 52px;
  height: 52px;
  background: var(--primary-pale);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.login-title {
  font-family: 'DM Serif Display', Georgia, serif;
  font-size: 2rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.015em;
}

.login-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 36px;
}

.login-roles {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 340px;
}

.role-btn {
  padding: 18px 20px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s, background 0.15s;
}
.role-btn:hover { border-color: var(--border-strong); }
.role-btn.selected { border-color: var(--primary); background: var(--primary-faint); }

.role-btn h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 3px;
  color: var(--text);
}
.role-btn p { font-size: 0.82rem; color: var(--text-muted); font-weight: 400; }

.pin-section {
  margin-top: 24px;
  width: 100%;
  max-width: 340px;
  display: none;
}
.pin-section.visible { display: block; }

.pin-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.pin-input {
  width: 100%;
  padding: 16px;
  font-size: 1.75rem;
  text-align: center;
  letter-spacing: 0.4em;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: 'DM Sans', sans-serif;
  outline: none;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.15s;
}
.pin-input:focus { border-color: var(--primary); }

.pin-error { color: var(--danger); font-size: 0.82rem; margin-top: 8px; display: none; }

.lockout-warning {
  background: var(--danger-pale);
  border: 1.5px solid var(--danger);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-top: 12px;
  display: none;
  text-align: center;
}
.lockout-warning.visible { display: block; }
.lockout-warning .lockout-icon { font-size: 1.25rem; margin-bottom: 4px; }
.lockout-warning .lockout-text { font-size: 0.82rem; color: var(--danger); font-weight: 600; }
.lockout-warning .lockout-timer {
  font-family: 'DM Serif Display', serif;
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--danger);
  margin-top: 4px;
}

.login-btn {
  margin-top: 16px;
  width: 100%;
  padding: 15px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: 'DM Sans', sans-serif;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s;
  letter-spacing: 0.01em;
}
.login-btn:hover { background: var(--primary-hover); }
.login-btn:disabled { background: var(--border-strong); cursor: not-allowed; color: var(--text-faint); }

/* ══════════════ APP SHELL ══════════════ */
.app { display: none; }
.app.visible { display: block; }

.header {
  background: var(--surface);
  color: var(--text);
  padding: 0 20px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
}

.header h1 {
  font-family: 'DM Serif Display', serif;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text);
  letter-spacing: -0.01em;
}

.header-right { display: flex; align-items: center; gap: 10px; }

.role-badge {
  background: var(--primary-pale);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.logout-btn {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  padding: 5px 13px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  font-weight: 500;
  transition: border-color 0.15s, color 0.15s;
}
.logout-btn:hover { border-color: var(--border-strong); color: var(--text); }

/* ══════════════ TABS ══════════════ */
.tabs {
  display: flex;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 56px;
  z-index: 99;
  overflow-x: auto;
}

.tab {
  flex: 1;
  padding: 14px 8px 13px;
  text-align: center;
  font-weight: 500;
  font-size: 0.82rem;
  color: var(--text-muted);
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  font-family: 'DM Sans', sans-serif;
  white-space: nowrap;
  transition: color 0.15s;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ══════════════ PANELS ══════════════ */
.panel { display: none; padding: 24px 20px 40px; max-width: 700px; margin: 0 auto; }
.panel.active { display: block; }

/* ══════════════ CARDS ══════════════ */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  margin-bottom: 16px;
}

.card h3 {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 14px;
}

/* ══════════════ BUTTONS ══════════════ */
.btn {
  padding: 13px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: 'DM Sans', sans-serif;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  letter-spacing: 0.01em;
}
.btn:active { opacity: 0.82; }
.btn:disabled { opacity: 0.42; cursor: not-allowed; pointer-events: none; }

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }

.btn-accent { background: var(--accent); color: white; }
.btn-accent:hover:not(:disabled) { background: var(--accent-hover); }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover:not(:disabled) { background: var(--primary-faint); }

.btn-danger { background: var(--danger); color: white; }

.btn-small { padding: 8px 14px; font-size: 0.80rem; width: auto; }

.btn-ghost {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--border-strong); color: var(--text); }

/* ══════════════ FORM ELEMENTS ══════════════ */
.input {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: 'DM Sans', sans-serif;
  outline: none;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.15s;
}
.input:focus { border-color: var(--primary); }
.input::placeholder { color: var(--text-faint); }
select.input { appearance: auto; cursor: pointer; }
.input-row { display: flex; gap: 8px; }

.form-group { margin-bottom: 16px; }

.form-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 7px;
  display: block;
}

.form-actions { display: flex; gap: 10px; margin-top: 24px; }
.form-actions .btn { flex: 1; }

/* ══════════════ SCANNER ══════════════ */
#reader-wrapper {
  margin-top: 14px;
  border-radius: var(--radius);
  overflow: hidden;
  display: none;
  background: var(--text);
}

.book-result {
  background: var(--primary-faint);
  border: 1.5px solid var(--primary-pale);
  display: none;
  animation: slideUp 0.25s ease-out;
}
.book-result.visible { display: block; }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.book-info-grid {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 14px;
  align-items: start;
}

.book-cover {
  width: 68px;
  height: 92px;
  background: var(--primary-pale);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-muted);
  font-size: 1.4rem;
  overflow: hidden;
}
.book-cover img { width: 100%; height: 100%; object-fit: cover; }

.book-details h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text);
}
.book-details .author { color: var(--text-muted); font-size: 0.85rem; }
.book-details .isbn-display {
  font-size: 0.70rem;
  color: var(--text-faint);
  font-family: ui-monospace, monospace;
  margin-top: 4px;
}

/* ══════════════ GENRE / FILTER CHIPS ══════════════ */
.genre-select, .genre-filter { display: flex; flex-wrap: wrap; gap: 6px; }

.genre-chip, .filter-chip {
  padding: 6px 13px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  font-family: 'DM Sans', sans-serif;
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.genre-chip:hover, .filter-chip:hover { border-color: var(--border-strong); color: var(--text); }
.genre-chip.selected, .filter-chip.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ══════════════ TOGGLE SWITCH ══════════════ */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 0;
}

.toggle-label { font-size: 0.9rem; font-weight: 500; color: var(--text); }

.toggle-switch {
  position: relative;
  width: 48px;
  height: 26px;
  background: var(--border-strong);
  border-radius: 13px;
  cursor: pointer;
  border: none;
  padding: 0;
  outline: none;
  flex-shrink: 0;
  transition: background 0.2s;
}
.toggle-switch.on { background: var(--primary); }
.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 4px oklch(17% 0.014 255 / 0.2);
}
.toggle-switch.on::after { transform: translateX(22px); }

/* ══════════════ READING LEVELS ══════════════ */
.level-dot {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 3px;
}
.level-dot.gul  { background: var(--level-gul); }
.level-dot.rod  { background: var(--level-rod); }
.level-dot.bla  { background: var(--level-bla); }
.level-dot-small { width: 9px; height: 9px; }

.level-select { display: flex; gap: 6px; flex-wrap: wrap; }

.level-option {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 7px 13px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  background: var(--surface);
  color: var(--text-muted);
  font-family: 'DM Sans', sans-serif;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.level-option:hover { border-color: var(--border-strong); color: var(--text); }
.level-option.selected { border-color: var(--primary); background: var(--primary-faint); color: var(--primary); }

/* ══════════════ QUANTITY SELECTOR ══════════════ */
.qty-selector { display: flex; align-items: center; gap: 16px; }

.qty-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: var(--surface);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'DM Sans', sans-serif;
  color: var(--text);
  transition: border-color 0.15s, background 0.15s;
}
.qty-btn:hover { border-color: var(--border-strong); background: var(--bg); }
.qty-btn:active { background: var(--primary-pale); border-color: var(--primary); }

.qty-value {
  font-family: 'DM Serif Display', serif;
  font-size: 1.5rem;
  min-width: 28px;
  text-align: center;
  color: var(--text);
}

/* ══════════════ SEARCH BAR ══════════════ */
.search-bar { position: relative; margin-bottom: 16px; }

.search-bar input {
  width: 100%;
  padding: 12px 14px 12px 42px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: 'DM Sans', sans-serif;
  background: var(--surface);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}
.search-bar input:focus { border-color: var(--primary); }
.search-bar input::placeholder { color: var(--text-faint); }

.search-bar .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  color: var(--text-faint);
  pointer-events: none;
}

/* ══════════════ BOOK LIST ══════════════ */
.book-list { display: flex; flex-direction: column; }

.book-list:not(:empty) {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.book-card {
  background: var(--surface);
  padding: 13px 16px;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  align-items: center;
  cursor: pointer;
  transition: background 0.1s;
  border-bottom: 1px solid var(--border);
}
.book-card:last-child { border-bottom: none; }
.book-card:hover { background: var(--bg); }
.book-card:active { background: var(--primary-faint); }
.book-card.loaned { background: var(--warning-pale); }
.book-card.loaned:hover { background: oklch(95% 0.03 68); }

.mini-cover {
  width: 44px;
  height: 60px;
  background: var(--primary-pale);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  font-size: 0.85rem;
  color: var(--primary-muted);
  flex-shrink: 0;
}
.mini-cover img { width: 100%; height: 100%; object-fit: cover; }

.card-info h4 { font-size: 0.875rem; font-weight: 600; margin-bottom: 1px; }
.card-info .card-author { font-size: 0.78rem; color: var(--text-muted); }

.card-info .card-genre {
  display: inline-block;
  margin-top: 4px;
  padding: 2px 8px;
  background: var(--primary-pale);
  color: var(--primary);
  border-radius: 10px;
  font-size: 0.68rem;
  font-weight: 600;
}

.card-info .card-status {
  display: inline-block;
  margin-top: 4px;
  margin-left: 4px;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.68rem;
  font-weight: 600;
}
.card-status.inne    { background: var(--success-pale); color: var(--success); }
.card-status.utlanad { background: var(--warning-pale); color: var(--warning); }

.card-badges { display: flex; align-items: center; gap: 4px; margin-top: 4px; flex-wrap: wrap; }

.badge-readaloud {
  display: inline-block;
  padding: 2px 7px;
  background: oklch(95% 0.02 80);
  color: oklch(46% 0.10 80);
  border-radius: 10px;
  font-size: 0.68rem;
  font-weight: 600;
}

/* ══════════════ STATS ROW ══════════════ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--surface);
  padding: 16px 12px;
  text-align: center;
}

.stat-card .number {
  font-family: 'DM Serif Display', serif;
  font-size: 1.75rem;
  color: var(--text);
  line-height: 1;
}

.stat-card .label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-top: 5px;
  font-weight: 600;
}

/* ══════════════ BROWSE OPTIONS ══════════════ */
.browse-options { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; }

.browse-btn {
  padding: 15px 18px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  cursor: pointer;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: 'DM Sans', sans-serif;
  transition: border-color 0.15s, background 0.15s;
}
.browse-btn:hover { border-color: var(--border-strong); background: var(--bg); }
.browse-btn:active { background: var(--primary-faint); border-color: var(--primary-pale); }

.browse-btn .browse-icon { font-size: 1.2rem; opacity: 0.75; flex-shrink: 0; }
.browse-btn .browse-text h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 2px; color: var(--text); }
.browse-btn .browse-text p { font-size: 0.78rem; color: var(--text-muted); }

/* ══════════════ MODAL ══════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: oklch(17% 0.014 255 / 0.45);
  z-index: 200;
  display: none;
  align-items: flex-end;
  justify-content: center;
  backdrop-filter: blur(2px);
}
.modal-overlay.visible { display: flex; }

.modal {
  background: var(--surface);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  width: 100%;
  max-width: 700px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 28px 24px 36px;
  animation: modalUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modalUp {
  from { transform: translateY(100%); opacity: 0.7; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
}

.modal-header h2 {
  font-family: 'DM Serif Display', serif;
  font-size: 1.4rem;
  font-weight: 400;
  flex: 1;
  margin-right: 16px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: var(--bg);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: border-color 0.15s, color 0.15s;
}
.modal-close:hover { border-color: var(--border-strong); color: var(--text); }

.loan-info {
  background: var(--warning-pale);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 16px;
  border: 1px solid oklch(88% 0.04 68);
}
.loan-info .label { font-size: 0.72rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 2px; }
.loan-info .value { font-weight: 600; font-size: 0.95rem; color: var(--text); }

/* ══════════════ STATISTICS ══════════════ */
.stats-table { width: 100%; border-collapse: collapse; }

.stats-table th {
  text-align: left;
  font-size: 0.70rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

.stats-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text);
}
.stats-table tr:last-child td { border-bottom: none; }
.stats-table .rank { font-weight: 700; color: var(--primary); width: 28px; }

.loan-group-header {
  font-size: 0.70rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 20px 0 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
  margin-top: 4px;
}
.loan-group-header:first-child { padding-top: 0; }

/* ══════════════ EMPTY STATE ══════════════ */
.empty-state {
  text-align: center;
  padding: 52px 20px;
  color: var(--text-faint);
}
.empty-state .icon { font-size: 2rem; margin-bottom: 10px; opacity: 0.55; }
.empty-state p { font-size: 0.875rem; color: var(--text-muted); }

/* ══════════════ TOAST ══════════════ */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: var(--text);
  color: var(--surface);
  padding: 11px 22px;
  border-radius: 20px;
  font-weight: 500;
  font-size: 0.875rem;
  box-shadow: var(--shadow-lg);
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 300;
  white-space: nowrap;
}
.toast.visible { transform: translateX(-50%) translateY(0); }

/* ══════════════ LOADING ══════════════ */
.loading { text-align: center; padding: 40px; color: var(--text-faint); }
.spinner {
  display: inline-block;
  width: 22px;
  height: 22px;
  border: 2.5px solid var(--border);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 0.65s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ══════════════ QUICK-SCAN MODE ══════════════ */
.quickscan-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 14px 16px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.quickscan-toggle .toggle-label { flex: 1; }
.quickscan-toggle .toggle-label small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 2px;
}

.quickscan-settings { display: none; animation: slideUp 0.25s ease-out; }
.quickscan-settings.visible { display: block; }
.quickscan-settings .card { background: var(--accent-pale); border-color: oklch(90% 0.04 30); }

.quickscan-log { display: none; animation: slideUp 0.25s ease-out; }
.quickscan-log.visible { display: block; }
.quickscan-log .card { background: var(--success-pale); border-color: oklch(90% 0.03 150); }

.log-counter {
  font-family: 'DM Serif Display', serif;
  font-size: 2.5rem;
  color: var(--success);
  margin-bottom: 2px;
  line-height: 1;
}

.log-list { max-height: 200px; overflow-y: auto; }

.log-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
}
.log-item:last-child { border-bottom: none; }
.log-item .log-num { color: var(--text-faint); font-weight: 600; font-size: 0.72rem; min-width: 22px; }
.log-item .log-title { font-weight: 600; color: var(--text); }
.log-item .log-author { color: var(--text-muted); }
.log-item .log-extra { color: var(--success); font-size: 0.72rem; font-weight: 600; margin-left: auto; white-space: nowrap; }

/* ══════════════ BULK LOAN ══════════════ */
.bulkloan-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 14px 16px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.bulkloan-toggle .toggle-label { flex: 1; }
.bulkloan-toggle .toggle-label small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 2px;
}

.bulkloan-settings { display: none; animation: slideUp 0.25s ease-out; }
.bulkloan-settings.visible { display: block; }
.bulkloan-settings .card { background: var(--accent-pale); border-color: oklch(90% 0.04 30); }

.bulkloan-cart { display: none; animation: slideUp 0.25s ease-out; }
.bulkloan-cart.visible { display: block; }
.bulkloan-cart .card { background: var(--warning-pale); border-color: oklch(90% 0.04 68); }

.cart-counter {
  font-family: 'DM Serif Display', serif;
  font-size: 2.5rem;
  color: var(--warning);
  margin-bottom: 2px;
  line-height: 1;
}

.cart-list { max-height: 260px; overflow-y: auto; }

.cart-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
}
.cart-item:last-child { border-bottom: none; }
.cart-item .cart-num { color: var(--text-faint); font-weight: 600; font-size: 0.72rem; min-width: 22px; }
.cart-item .cart-title { font-weight: 600; flex: 1; color: var(--text); }
.cart-item .cart-author { color: var(--text-muted); font-size: 0.78rem; }
.cart-item .cart-remove {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--danger);
  padding: 2px 6px;
  opacity: 0.65;
  transition: opacity 0.15s;
}
.cart-item .cart-remove:hover { opacity: 1; }

.bulkloan-confirm { margin-top: 12px; }

.book-card.bulk-unavailable { opacity: 0.32; pointer-events: none; }
.book-card.bulk-selected {
  background: var(--accent-pale);
  outline: 1.5px solid var(--accent);
  outline-offset: -1px;
}

/* ══════════════ BULK RETURN ══════════════ */
.bulkreturn-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 14px 16px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.bulkreturn-toggle .toggle-label { flex: 1; }
.bulkreturn-toggle .toggle-label small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 2px;
}

.bulkreturn-cart { display: none; animation: slideUp 0.25s ease-out; }
.bulkreturn-cart.visible { display: block; }
.bulkreturn-cart .card { background: var(--success-pale); border-color: oklch(90% 0.03 150); }

.book-card.return-selected {
  background: var(--success-pale);
  outline: 1.5px solid var(--success);
  outline-offset: -1px;
}

/* ══════════════ CLASS PICKER ══════════════ */
.picker-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; width: 100%; }
.picker-sublevel { padding-left: 16px; margin-top: 2px; }

.color-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 4px;
  flex-shrink: 0;
}
.color-dot.bla { background: var(--level-bla); }
.color-dot.gul { background: var(--level-gul); }
.color-dot.rod { background: var(--level-rod); }

.genre-chip.color-chip { display: inline-flex; align-items: center; }
.genre-chip.color-chip.bla.selected { background: var(--level-bla); border-color: var(--level-bla); color: white; }
.genre-chip.color-chip.gul.selected { background: var(--level-gul); border-color: var(--level-gul); color: oklch(20% 0.01 88); }
.genre-chip.color-chip.rod.selected { background: var(--level-rod); border-color: var(--level-rod); color: white; }

/* ══════════════ UNUSED BOOKS REPORT ══════════════ */
.unused-books-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.unused-books-header h3 { margin-bottom: 0; }

.unused-books-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.unused-books-table th {
  text-align: left;
  font-size: 0.70rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
.unused-books-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text);
}
.unused-books-table tr:last-child td { border-bottom: none; }
.unused-books-export { margin-top: 14px; }