/* ==========================================================================
   DUNES INTERNATIONAL SCHOOL • DHAHRAN (CBSE AFFILIATION NO. 5730026)
   LIBRARY MANAGEMENT SYSTEM — APPLE HIG DESIGN SYSTEM & TOKENS
   Matches `school-website/src/app/globals.css` & Portal UI Language
   ========================================================================== */

:root {
  --bg-canvas: #F5F5F7;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F5F5F7;
  --bg-track: #E5E5EA;

  --text-primary: #1D1D1F;
  --text-secondary: #6E6E73;
  --text-muted: #86868B;

  --apple-blue: #0071E3;
  --apple-blue-hover: #0077ED;
  --apple-blue-tint: rgba(0, 113, 227, 0.08);

  --apple-green: #34C759;
  --apple-green-text: #1E8238;
  --apple-green-tint: rgba(52, 199, 89, 0.12);

  --apple-orange: #FF9500;
  --apple-orange-text: #B26A00;
  --apple-orange-tint: rgba(255, 149, 0, 0.12);

  --apple-red: #FF3B30;
  --apple-red-text: #D70015;
  --apple-red-tint: rgba(255, 59, 48, 0.10);

  --border-hairline: rgba(0, 0, 0, 0.06);
  --border-strong: rgba(0, 0, 0, 0.12);

  --shadow-card: 0 2px 14px rgba(0, 0, 0, 0.03), 0 1px 3px rgba(0, 0, 0, 0.02);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.03);
  --shadow-segment: 0 2px 8px rgba(0, 0, 0, 0.10), 0 1px 2px rgba(0, 0, 0, 0.04);

  --radius-card: 20px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-pill: 9999px;

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  vertical-align: middle;
}

/* ==========================================================================
   TOP STICKY APPLE GLASS HEADER
   ========================================================================== */
.apple-glass-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.80);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-hairline);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-monogram {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #1D1D1F;
  color: #FFFFFF;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-titles {
  display: flex;
  flex-direction: column;
}

.brand-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.brand-pill {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 500;
}

.brand-subtitle {
  font-size: 11.5px;
  color: var(--text-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.db-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: var(--apple-green-tint);
  color: var(--apple-green-text);
  font-size: 11.5px;
  font-weight: 600;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--apple-green);
}

.librarian-badge {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 4px 12px 4px 4px;
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid var(--border-hairline);
}

.librarian-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--apple-blue);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.librarian-meta {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.librarian-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.librarian-role {
  font-size: 10.5px;
  color: var(--text-muted);
}

/* ==========================================================================
   MAIN CONTAINER & DIRECTORATE HERO CARD
   ========================================================================== */
.main-container {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 24px 24px 64px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.apple-card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-hairline);
  box-shadow: var(--shadow-card);
}

.apple-card-hover {
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.2s ease;
}

.apple-card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-strong);
}

.directorate-banner {
  padding: 24px 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.directorate-eyebrow {
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--apple-blue);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.directorate-eyebrow span.muted {
  color: var(--text-muted);
}

.directorate-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.directorate-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.directorate-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ==========================================================================
   APPLE HIG SEGMENTED CONTROL (NAVIGATION BAR)
   ========================================================================== */
.segmented-nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.apple-segmented-track {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-track);
  padding: 5px;
  border-radius: 16px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}

.apple-segmented-track::-webkit-scrollbar {
  display: none;
}

.apple-segmented-item,
.apple-segmented-item-active,
.apple-segmented-item-inactive {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 11px;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.25;
  white-space: nowrap;
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
}

.apple-segmented-item-active {
  background: #FFFFFF !important;
  color: #1D1D1F !important;
  font-weight: 600 !important;
  box-shadow: var(--shadow-segment) !important;
  border-color: rgba(0, 0, 0, 0.04) !important;
}

.apple-segmented-item-inactive {
  background: transparent !important;
  color: var(--text-secondary) !important;
  font-weight: 500 !important;
}

.apple-segmented-item-inactive:hover {
  color: var(--text-primary) !important;
  background: rgba(0, 0, 0, 0.05) !important;
}

.seg-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.seg-count {
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  background: rgba(0, 0, 0, 0.06);
  color: var(--text-primary);
}

.seg-count-danger {
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  background: var(--apple-red);
  color: #FFFFFF;
}

/* ==========================================================================
   KPI METRIC BENTO CARDS (4-COLUMN ROW)
   ========================================================================== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

@media (max-width: 960px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }
}

.kpi-card {
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 6px;
}

.kpi-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.kpi-label.danger {
  color: var(--apple-red);
}

.kpi-value {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}

.kpi-value.danger {
  color: var(--apple-red);
}

.kpi-value.blue {
  color: var(--apple-blue);
}

.kpi-subtext {
  font-size: 12px;
  color: var(--text-muted);
}

/* ==========================================================================
   TOOLBAR, SEARCH FIELD & PILL FILTERS
   ========================================================================== */
.toolbar-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.toolbar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-box svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 10px 36px 10px 38px;
  border-radius: 12px;
  background: var(--bg-subtle);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  transition: all 0.18s ease;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-input:focus {
  background: #FFFFFF;
  border-color: var(--apple-blue);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

.filter-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border-hairline);
  scrollbar-width: none;
}

.filter-strip::-webkit-scrollbar {
  display: none;
}

.filter-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-right: 4px;
  flex-shrink: 0;
}

.pill-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.15s ease;
}

.pill-chip:hover {
  background: var(--bg-track);
  color: var(--text-primary);
}

.pill-chip.active-dark {
  background: #1D1D1F;
  color: #FFFFFF;
  font-weight: 600;
}

.pill-chip.active-blue {
  background: var(--apple-blue);
  color: #FFFFFF;
  font-weight: 600;
}

.pill-count {
  padding: 1px 6px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 10.5px;
  background: rgba(0, 0, 0, 0.06);
  color: inherit;
}

.pill-chip.active-blue .pill-count,
.pill-chip.active-dark .pill-count {
  background: rgba(255, 255, 255, 0.22);
  color: #FFFFFF;
}

/* ==========================================================================
   BUTTONS & BADGES (APPLE SYSTEM CONTROLS)
   ========================================================================== */
.btn-apple-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: var(--apple-blue);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.16s ease;
  white-space: nowrap;
}

.btn-apple-primary:hover {
  background: var(--apple-blue-hover);
}

.btn-apple-primary:active {
  transform: scale(0.98);
}

.btn-apple-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: #1D1D1F;
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.16s ease;
  white-space: nowrap;
}

.btn-apple-dark:hover {
  background: #333336;
}

.btn-apple-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-apple-secondary:hover {
  background: rgba(0, 0, 0, 0.09);
}

.btn-apple-success {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: var(--apple-green);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-apple-success:hover {
  filter: brightness(0.95);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-blue {
  background: var(--apple-blue-tint);
  color: var(--apple-blue);
}

.badge-green {
  background: var(--apple-green-tint);
  color: var(--apple-green-text);
}

.badge-orange {
  background: var(--apple-orange-tint);
  color: var(--apple-orange-text);
}

.badge-red {
  background: var(--apple-red-tint);
  color: var(--apple-red-text);
}

.badge-neutral {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   BOOK CATALOG BENTO GRID (APPLE BOOKS / FILES CARDS)
   ========================================================================== */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 1040px) {
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .catalog-grid {
    grid-template-columns: 1fr;
  }
}

.book-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
}

.book-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.book-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  margin-top: 10px;
  transition: color 0.15s ease;
}

.book-card:hover .book-title {
  color: var(--apple-blue);
}

.book-author {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin-top: 3px;
}

.book-meta-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 12px;
  color: var(--text-muted);
}

.book-meta-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.mono-code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-secondary);
}

.book-card-footer {
  padding-top: 14px;
  border-top: 1px solid var(--border-hairline);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.inventory-bar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
}

.progress-track {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--bg-subtle);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-pill);
  background: var(--apple-blue);
  transition: width 0.3s ease;
}

.progress-fill.empty {
  background: var(--apple-red);
}

/* ==========================================================================
   DATA TABLES (CIRCULATION LEDGER, MEMBERS, ADMIN DEFAULTERS)
   ========================================================================== */
.table-card {
  overflow: hidden;
}

.table-card-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.table-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
}

.apple-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.apple-table th {
  padding: 12px 18px;
  background: #FAFAFC;
  border-bottom: 1px solid var(--border-hairline);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  white-space: nowrap;
}

.apple-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-hairline);
  font-size: 13px;
  color: var(--text-primary);
  vertical-align: middle;
}

.apple-table tbody tr {
  transition: background-color 0.12s ease;
}

.apple-table tbody tr:hover {
  background-color: rgba(0, 0, 0, 0.015);
}

.apple-table tbody tr:last-child td {
  border-bottom: none;
}

/* ==========================================================================
   FORMS & SPLIT WORKFLOW LAYOUTS
   ========================================================================== */
.split-grid {
  display: grid;
  grid-template-columns: 1.05fr 1.35fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 960px) {
  .split-grid {
    grid-template-columns: 1fr;
  }
}

.form-card {
  padding: 24px;
}

.form-section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.form-section-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

@media (max-width: 600px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.form-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 10px 13px;
  border-radius: 11px;
  background: var(--bg-subtle);
  border: 1px solid rgba(0, 0, 0, 0.08);
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  transition: all 0.16s ease;
}

.form-control:focus {
  background: #FFFFFF;
  border-color: var(--apple-blue);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

.rule-callout {
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

/* ==========================================================================
   FLASH ALERTS & NOTIFICATIONS
   ========================================================================== */
.flash-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.flash-banner {
  padding: 13px 18px;
  border-radius: 14px;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: var(--shadow-card);
}

.flash-banner.success {
  background: #FFFFFF;
  border-left: 4px solid var(--apple-green);
  color: var(--text-primary);
}

.flash-banner.error {
  background: #FFFFFF;
  border-left: 4px solid var(--apple-red);
  color: var(--apple-red-text);
}

/* ==========================================================================
   MODAL & SLIDE-OVER DRAWER (MEMBER DOSSIER & ADD BOOK/MEMBER)
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop.open {
  display: flex;
}

.modal-sheet {
  background: #FFFFFF;
  border-radius: 22px;
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--border-hairline);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.16);
  padding: 26px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-hairline);
  margin-bottom: 18px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.apple-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-hairline);
  background: #FFFFFF;
  padding: 18px 24px;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}