/**
 * Print Stylesheet - Staff Rota Management System
 * December 2025
 * 
 * Optimizes pages for printing:
 * - Hides navigation, buttons, and UI chrome
 * - Black/white color scheme (saves ink)
 * - Page break controls
 * - Print-friendly fonts and spacing
 * - Professional printed documents
 * 
 * Usage: Automatically applied when user prints (Ctrl+P / Cmd+P)
 */

@media print {
  /* ========================================
     PAGE SETUP
     ======================================== */
  
  @page {
    size: A4;
    margin: 1.5cm 1cm 1.5cm 1cm; /* top, right, bottom, left */
    
    /* Print header with page numbers */
    @top-center {
      content: "Glasgow HSCP - Staff Rota System";
      font-size: 10pt;
      font-weight: 600;
      color: #000;
    }
    
    @bottom-right {
      content: "Page " counter(page) " of " counter(pages);
      font-size: 9pt;
      color: #666;
    }
    
    @bottom-left {
      content: "Printed: " string(print-date);
      font-size: 9pt;
      color: #666;
    }
  }
  
  /* ========================================
     GLOBAL PRINT STYLES
     ======================================== */
  
  * {
    /* Force colors to black/white */
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
    color-adjust: exact !important;
  }
  
  html, body {
    width: 100%;
    height: auto;
    margin: 0;
    padding: 0;
    background: white !important;
    color: black !important;
    font-size: 11pt;
    line-height: 1.4;
    font-family: 'Times New Roman', Times, serif; /* Print-friendly serif font */
  }
  
  /* ========================================
     HIDE NON-PRINTABLE ELEMENTS
     ======================================== */
  
  /* Navigation and header */
  nav,
  .navbar,
  .nav,
  header,
  .sidebar,
  .menu,
  #main-navigation,
  .breadcrumb {
    display: none !important;
  }
  
  /* Footer */
  footer,
  #footer,
  .footer {
    display: none !important;
  }
  
  /* Buttons and interactive elements */
  button,
  .btn,
  .button,
  input[type="button"],
  input[type="submit"],
  input[type="reset"],
  .form-actions,
  .action-buttons {
    display: none !important;
  }
  
  /* Forms (except printed values) */
  form,
  .form-group,
  input,
  select,
  textarea {
    display: none !important;
  }
  
  /* Skip links and accessibility helpers */
  .skip-link,
  .sr-only,
  .visually-hidden {
    display: none !important;
  }
  
  /* Alerts and toasts */
  .alert,
  .toast,
  .notification,
  .flash-message {
    display: none !important;
  }
  
  /* Modals and overlays */
  .modal,
  .modal-backdrop,
  .overlay,
  .popup {
    display: none !important;
  }
  
  /* Ads and non-content */
  .advertisement,
  .social-share,
  .comments,
  .feedback {
    display: none !important;
  }
  
  /* Loading spinners */
  .spinner,
  .loading,
  #global-spinner {
    display: none !important;
  }
  
  /* Service worker notifications */
  .sw-update-notification {
    display: none !important;
  }
  
  /* ========================================
     SHOW PRINTABLE CONTENT
     ======================================== */
  
  main,
  #main-content,
  .content,
  .printable {
    display: block !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    background: white !important;
  }
  
  /* ========================================
     TYPOGRAPHY FOR PRINT
     ======================================== */
  
  h1, h2, h3, h4, h5, h6 {
    color: black !important;
    background: none !important;
    page-break-after: avoid;
    page-break-inside: avoid;
    font-weight: bold;
    margin-top: 0.5em;
    margin-bottom: 0.3em;
  }
  
  h1 {
    font-size: 18pt;
    border-bottom: 2pt solid black;
    padding-bottom: 0.2em;
    margin-bottom: 0.5em;
  }
  
  h2 {
    font-size: 16pt;
    border-bottom: 1pt solid #666;
    padding-bottom: 0.1em;
  }
  
  h3 {
    font-size: 14pt;
  }
  
  h4 {
    font-size: 12pt;
  }
  
  p {
    color: black !important;
    margin: 0.3em 0;
    orphans: 3; /* Minimum lines at bottom of page */
    widows: 3;  /* Minimum lines at top of page */
  }
  
  /* Links - show URL after link text */
  a {
    color: black !important;
    text-decoration: underline;
  }
  
  a[href]:after {
    content: " (" attr(href) ")";
    font-size: 9pt;
    color: #666;
  }
  
  /* Don't show URL for internal links */
  a[href^="#"]:after,
  a[href^="javascript:"]:after {
    content: "";
  }
  
  /* ========================================
     TABLES FOR PRINT
     ======================================== */
  
  table {
    width: 100% !important;
    border-collapse: collapse !important;
    page-break-inside: auto;
    background: white !important;
    margin: 0.5em 0;
  }
  
  thead {
    display: table-header-group; /* Repeat header on each page */
    background: white !important;
  }
  
  tfoot {
    display: table-footer-group;
  }
  
  tbody {
    background: white !important;
  }
  
  tr {
    page-break-inside: avoid;
    page-break-after: auto;
  }
  
  th, td {
    border: 1pt solid #333 !important;
    padding: 0.3em 0.5em !important;
    color: black !important;
    background: white !important;
    font-size: 10pt;
  }
  
  th {
    background: #f0f0f0 !important;
    font-weight: bold;
    text-align: left;
  }
  
  /* Zebra striping with subtle gray (saves ink) */
  tbody tr:nth-child(even) td {
    background: #f8f8f8 !important;
  }
  
  /* ========================================
     SHIFT ROTA SPECIFIC STYLES
     ======================================== */
  
  .shift-card,
  .rota-card {
    border: 1pt solid #333 !important;
    margin: 0.5em 0;
    padding: 0.5em;
    page-break-inside: avoid;
    background: white !important;
  }
  
  .shift-header,
  .rota-header {
    font-weight: bold;
    border-bottom: 1pt solid #666;
    padding-bottom: 0.2em;
    margin-bottom: 0.3em;
  }
  
  .shift-time,
  .shift-date {
    font-weight: bold;
    font-size: 11pt;
  }
  
  .staff-name {
    font-weight: bold;
    font-size: 10pt;
  }
  
  .shift-type {
    font-style: italic;
  }
  
  /* Calendar view */
  .calendar {
    width: 100%;
    border-collapse: collapse;
    page-break-inside: avoid;
  }
  
  .calendar-day {
    border: 1pt solid #333 !important;
    padding: 0.3em !important;
    vertical-align: top;
    min-height: 2em;
    background: white !important;
  }
  
  .calendar-day.today {
    background: #f0f0f0 !important;
    font-weight: bold;
  }
  
  .calendar-day.weekend {
    background: #f5f5f5 !important;
  }
  
  /* ========================================
     CHARTS AND VISUALIZATIONS
     ======================================== */
  
  canvas {
    max-width: 100% !important;
    height: auto !important;
    page-break-inside: avoid;
  }
  
  .chart-container {
    page-break-inside: avoid;
    margin: 1em 0;
  }
  
  /* Hide interactive chart controls */
  .chart-controls,
  .chart-legend-interactive {
    display: none !important;
  }
  
  /* ========================================
     PAGE BREAKS
     ======================================== */
  
  /* Force page break before these elements */
  .page-break-before,
  .new-page {
    page-break-before: always;
  }
  
  /* Force page break after */
  .page-break-after {
    page-break-after: always;
  }
  
  /* Avoid page breaks inside */
  .page-break-avoid,
  .card,
  .panel,
  .section {
    page-break-inside: avoid;
  }
  
  /* Section breaks */
  .section {
    margin-top: 1em;
    margin-bottom: 1em;
  }
  
  /* ========================================
     BADGES AND LABELS
     ======================================== */
  
  .badge,
  .label,
  .tag {
    border: 1pt solid black !important;
    background: white !important;
    color: black !important;
    padding: 0.1em 0.3em;
    font-size: 9pt;
    display: inline-block;
  }
  
  /* Status badges */
  .badge-success,
  .status-approved {
    border-color: #333 !important;
  }
  
  .badge-warning,
  .status-pending {
    border-color: #666 !important;
  }
  
  .badge-danger,
  .status-rejected {
    border-color: #000 !important;
    font-weight: bold;
  }
  
  /* ========================================
     LISTS
     ======================================== */
  
  ul, ol {
    margin: 0.3em 0;
    padding-left: 1.5em;
  }
  
  li {
    margin: 0.2em 0;
    color: black !important;
  }
  
  /* ========================================
     IMAGES
     ======================================== */
  
  img {
    max-width: 100% !important;
    height: auto !important;
    page-break-inside: avoid;
    display: block;
    margin: 0.5em 0;
  }
  
  /* Hide decorative images */
  .logo,
  .icon,
  .avatar,
  .decorative {
    display: none !important;
  }
  
  /* Keep important images like QR codes */
  img.printable,
  img.qr-code {
    display: block !important;
  }
  
  /* ========================================
     UTILITY CLASSES
     ======================================== */
  
  /* Force show elements marked for print */
  .print-only {
    display: block !important;
  }
  
  /* Hide elements marked as no-print */
  .no-print,
  .screen-only {
    display: none !important;
  }
  
  /* Print info block */
  .print-info {
    border: 1pt solid #333;
    padding: 0.5em;
    margin: 0.5em 0;
    background: #f8f8f8 !important;
    page-break-inside: avoid;
  }
  
  /* ========================================
     SPECIFIC PAGE TYPES
     ======================================== */
  
  /* Dashboard - hide charts, show data */
  .dashboard .chart-container {
    display: none !important;
  }
  
  .dashboard .data-table {
    display: table !important;
  }
  
  /* Leave requests */
  .leave-request {
    border: 1pt solid #333;
    padding: 0.5em;
    margin: 0.5em 0;
    page-break-inside: avoid;
  }
  
  /* Staff profiles */
  .staff-profile {
    page-break-inside: avoid;
    border-bottom: 1pt solid #ccc;
    padding-bottom: 0.5em;
    margin-bottom: 0.5em;
  }
  
  /* ========================================
     ACCESSIBILITY FOR PRINT
     ======================================== */
  
  /* Ensure sufficient contrast (black on white) */
  * {
    background: white !important;
    color: black !important;
  }
  
  /* Exception: slight gray for zebra striping */
  tr:nth-child(even),
  .alternate-row {
    background: #f5f5f5 !important;
  }
  
  /* ========================================
     FOOTER CONTENT (shown on print)
     ======================================== */
  
  .print-footer {
    display: block !important;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    border-top: 1pt solid #ccc;
    padding-top: 0.3em;
    margin-top: 1em;
    font-size: 9pt;
    color: #666 !important;
    text-align: center;
  }
  
  /* ========================================
     CUSTOM PRINT TITLE
     ======================================== */
  
  .print-title {
    display: block !important;
    font-size: 20pt;
    font-weight: bold;
    text-align: center;
    margin-bottom: 0.5em;
    padding-bottom: 0.3em;
    border-bottom: 2pt solid black;
    page-break-after: avoid;
  }
  
  .print-date {
    display: block !important;
    font-size: 10pt;
    text-align: right;
    margin-bottom: 1em;
    color: #666 !important;
  }
}

/* ========================================
   PRINT PREVIEW MODE (for testing)
   ======================================== */

body.print-preview {
  /* Apply print styles to screen for testing */
  background: white;
  max-width: 21cm; /* A4 width */
  margin: 0 auto;
  padding: 1cm;
  box-shadow: 0 0 1cm rgba(0,0,0,0.3);
}

body.print-preview nav,
body.print-preview footer,
body.print-preview .btn,
body.print-preview button {
  opacity: 0.3;
  pointer-events: none;
}