/* ── UCNS CMS — Premium Theme ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg:       #F0F4F8;
  --surface:  #FFFFFF;
  --surface2: #F8FAFB;
  --border:   #DDE3EA;
  --border2:  #C8D0DA;
  --accent:   #0D3B4E;
  --accent2:  #1A5C78;
  --gold:     #E8A020;
  --gold-bg:  rgba(232,160,32,0.10);
  --danger:   #E24B4A;
  --success:  #1D9E75;
  --info:     #378ADD;
  --text:     #1A2535;
  --muted:    #5A6A7E;
  --muted2:   #8A9BB0;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'Segoe UI', sans-serif;
  min-height: 100vh;
  font-size: 13px;
  font-weight: 400;
}

/* ── App wrapper ── */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 210px;
  flex-shrink: 0;
  background: #0D3B4E;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 50;
  overflow-y: auto;
}

.sb-logo {
  padding: 18px 16px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; gap: 10px;
}
.sb-logo img { height: 36px; width: auto; background: #fff; border-radius: 5px; padding: 2px; }
.sb-logo-text { font-size: 11px; font-weight: 700; color: #fff; line-height: 1.3; }
.sb-logo-sub { font-size: 9px; color: rgba(255,255,255,0.4); letter-spacing: 0.05em; margin-top: 2px; }

.sb-section {
  padding: 12px 14px 4px;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.3);
  font-weight: 700;
}

.sb-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  margin: 1px 8px;
  border-radius: 7px;
  color: rgba(255,255,255,0.55);
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 500;
  transition: all 0.15s;
  border: none; background: none; width: calc(100% - 16px); text-align: left;
}
.sb-item:hover { background: rgba(255,255,255,0.07); color: rgba(255,255,255,0.9); }
.sb-item.active { background: rgba(232,160,32,0.15); color: #F0B840; border-left: 3px solid #E8A020; padding-left: 11px; }
.sb-item svg { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.8; }
.sb-item.active svg { opacity: 1; }

.sb-bottom { margin-top: auto; padding: 12px 8px; border-top: 1px solid rgba(255,255,255,0.08); }

.main-area {
  margin-left: 210px;
  flex: 1;
  display: flex; flex-direction: column;
  min-width: 0;
}

.app {
  flex: 1;
  padding: 24px 24px 60px;
}

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.logo-mark {
  width: 48px; height: 48px;
  background: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; overflow: hidden;
  border: none;
  padding: 3px;
}
.logo-mark img {
  height: 42px; width: auto;
  display: block;
}

header h1 {
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.2px;
  color: var(--text);
  line-height: 1.3;
}
header h1 span { color: var(--accent); }

.status-dot {
  margin-left: auto;
  display: flex; align-items: center; gap: 8px;
  font-size: 11px;
  color: var(--muted);
  font-family: 'Inter', monospace;
}

.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted2); }
.dot.ok  { background: #4ade80; box-shadow: 0 0 6px #4ade80; animation: pulse 2s infinite; }
.dot.err { background: var(--danger); box-shadow: 0 0 6px var(--danger); }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }

#role-badge {
  font-size: 10px !important;
  font-weight: 600 !important;
  padding: 3px 10px !important;
  border-radius: 99px !important;
  background: rgba(13,59,78,0.08) !important;
  color: var(--accent) !important;
  border: 1px solid rgba(13,59,78,0.2) !important;
}

#logout-btn {
  background: rgba(239,68,68,0.08) !important;
  color: var(--danger) !important;
  border: 1px solid rgba(239,68,68,0.2) !important;
  border-radius: 6px !important;
  padding: 5px 12px !important;
  font-size: 11px !important;
  font-weight: 600 !important;
  cursor: pointer !important;
}

/* ── Tabs ── */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 5px;
  flex-wrap: wrap;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.tab {
  flex: 1 1 auto;
  padding: 9px 8px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.3px;
  cursor: pointer;
  border-radius: 7px;
  transition: all 0.15s;
  text-transform: uppercase;
  font-family: 'Inter', sans-serif;
  min-width: 110px;
}

.tab:hover { color: var(--text); background: var(--bg); }

.tab.active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(13,59,78,0.22);
}

.panel { display: none; }
.panel.active { display: block; }

/* ── Section header ── */
.section-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
  font-weight: 600;
}

.count-badge {
  font-size: 11px;
  background: var(--bg);
  color: var(--muted);
  padding: 2px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  font-weight: 500;
}

/* ── Filter selects ── */
.filter-select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 7px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s;
}
.filter-select:focus, .filter-select:hover { border-color: var(--accent2); }

/* ── Table ── */
.table-wrap {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 24px;
  overflow-x: auto;
  background: var(--surface);
  box-shadow: 0 1px 6px rgba(0,0,0,0.06);
}

table { width: 100%; border-collapse: collapse; min-width: 360px; }

thead { background: var(--accent); }

th {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255,255,255,0.85);
  padding: 11px 14px;
  text-align: left;
  border-bottom: none;
  white-space: nowrap;
  font-weight: 600;
}

td {
  padding: 10px 14px;
  font-size: 12.5px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(13,59,78,0.04); }

.balance-row td {
  background: rgba(232,160,32,0.08);
  color: var(--gold);
  font-weight: 700;
}

.empty-row td {
  color: var(--muted2);
  text-align: center;
  padding: 32px;
  font-size: 13px;
}

/* ── Form card ── */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: 0 1px 6px rgba(0,0,0,0.06);
}

.form-section-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent2);
  font-weight: 700;
  margin: 18px 0 10px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 6px;
}

.form-section-hint {
  font-size: 11px;
  color: var(--muted);
  text-transform: none;
  letter-spacing: 0;
  margin-left: 8px;
  font-weight: 400;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.field { display: flex; flex-direction: column; gap: 5px; }

label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--muted);
  font-weight: 600;
}

.req { color: var(--danger); }

input[type="text"],
input[type="number"],
input[type="date"],
input[type="url"] {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  padding: 9px 12px;
  border-radius: 7px;
  outline: none;
  width: 100%;
  transition: border-color 0.15s, background 0.15s;
}

input:focus {
  border-color: var(--accent2);
  background: var(--surface);
}

input::placeholder { color: var(--muted2); }

/* ── Total bar ── */
.form-total-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(13,59,78,0.06);
  border: 1px solid rgba(13,59,78,0.15);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 12px 18px;
  margin: 18px 0 20px;
}

.form-total-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--muted);
  font-weight: 600;
}

.form-total-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}

/* ── Buttons ── */
.btn {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  padding: 9px 16px;
  border-radius: 7px;
  border: none;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(13,59,78,0.2);
}
.btn-primary:hover { background: var(--accent2); }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg); border-color: var(--border2); }

.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Search row ── */
.search-row {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.search-row input { flex: 1; min-width: 200px; }

/* ── Toast ── */
#toast {
  position: fixed;
  bottom: 20px; right: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 13px;
  display: flex; align-items: center; gap: 10px;
  opacity: 0; pointer-events: none;
  z-index: 100;
  font-family: 'Inter', sans-serif;
  transition: opacity 0.2s;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
#toast.show { opacity: 1; }
#toast.success { border-left: 4px solid var(--success); }
#toast.error   { border-left: 4px solid var(--danger); }

/* ── Spinner ── */
.spinner {
  display: inline-block;
  width: 13px; height: 13px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

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

/* ── Ledger Info Bar ── */
.ledger-info-bar {
  display: flex;
  gap: 20px;
  margin-bottom: 14px;
  padding: 14px 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  flex-wrap: wrap;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.ledger-info-item { display: flex; flex-direction: column; gap: 4px; }
.ledger-info-label { font-size: 10px; text-transform: uppercase; color: var(--muted2); letter-spacing: 0.8px; font-weight: 600; }
.ledger-info-value { font-size: 14px; font-weight: 600; color: var(--text); }
.ledger-actions { display: flex; gap: 8px; margin-bottom: 14px; }

/* ── Summary card override ── */
#ledger-summary-container > div {
  background: var(--surface) !important;
  border: 1px solid var(--border) !important;
  color: var(--text) !important;
  border-radius: 10px !important;
  box-shadow: 0 1px 6px rgba(0,0,0,0.06) !important;
}

/* ── Modals ── */
#student-modal-overlay,
#edit-modal-overlay {
  backdrop-filter: blur(6px);
}

#edit-modal-body input:focus,
#edit-modal-body select:focus {
  border-color: var(--accent2) !important;
  outline: none;
}

/* ── Responsive ── */
/* ── Mobile nav: hamburger + slide-in sidebar ── */
.sb-hamburger {
  display: none;
  position: fixed;
  top: 14px; left: 14px;
  z-index: 210;
  width: 40px; height: 40px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: #fff;
  align-items: center; justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.sb-hamburger svg { width: 20px; height: 20px; }
.sb-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 150;
}
.sb-backdrop.show { display: block; }

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 200;
  }
  .sidebar.mobile-open { transform: translateX(0); }
  .main-area { margin-left: 0; }
  .sb-hamburger { display: flex; }
  header { padding-left: 62px; }
}
@media (max-width: 520px) {
  .tabs { flex-wrap: wrap; }
  .tab { flex: 1 1 45%; }
  .form-grid { grid-template-columns: 1fr 1fr; }
  .section-header { flex-direction: column; align-items: stretch; }
  .filter-select { width: 100%; }
  header h1 { font-size: 12px; }
}

/* ── Catalog table: bounded height so its horizontal scrollbar
   and header stay reachable without scrolling the whole page ── */
.lib-scroll-table {
  max-height: 65vh;
  overflow: auto;
}
.lib-scroll-table table { min-width: 1500px; }
.lib-scroll-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--accent);
}

/* ── Spine label / custom list printing ── */
.print-only-area { display: none; }
.spine-label {
  width: 1.4in;
  padding: 6px 4px;
  border: 1px solid #000;
  text-align: center;
  font-family: Arial, Helvetica, sans-serif;
  font-weight: 700;
  line-height: 1.35;
  display: inline-block;
  vertical-align: top;
  margin: 0 6px 6px 0;
  break-inside: avoid;
  page-break-inside: avoid;
}
.spine-label div { font-size: 13px; word-break: break-word; }
#book-list-print-area table { width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, sans-serif; font-size: 11px; }
#book-list-print-area th, #book-list-print-area td { border: 1px solid #999; padding: 4px 6px; text-align: left; }
#book-list-print-area th { background: #eee; }
@media print {
  body * { visibility: hidden; }
  .print-only-area, .print-only-area * { visibility: visible; }
  .print-only-area {
    display: block !important;
    position: fixed; top: 0; left: 0;
    width: 100%;
  }
}