/* ==========================================================================
   THABAT HRMS V2.0 - Main Design System & Layout Architecture
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Cairo:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette - Light Mode */
  --bg-app: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-hover: #F1F5F9;
  
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #94A3B8;
  
  --border-subtle: #E2E8F0;
  --border-strong: #CBD5E1;
  
  /* Brand Colors */
  --brand-primary: #1E293B;     /* Deep Slate */
  --brand-accent: #2563EB;      /* Tech Blue */
  --brand-accent-hover: #1D4ED8;
  --brand-highlight: #F59E0B;   /* Amber */
  
  /* Status Colors */
  --status-success: #10B981;
  --status-success-bg: #ECFDF5;
  --status-warning: #F59E0B;
  --status-warning-bg: #FFFBEB;
  --status-danger: #EF4444;
  --status-danger-bg: #FEF2F2;
  --status-info: #3B82F6;
  --status-info-bg: #EFF6FF;

  /* Typography */
  --font-sans: 'Inter', -apple-system, sans-serif;
  --font-arabic: 'Cairo', -apple-system, sans-serif;
  
  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  
  /* Radii & Shadows */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1);
  --shadow-dropdown: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);

  --transition: all 0.2s ease-in-out;

  /* Layout */
  --sidebar-width: 260px;
  --header-height: 90px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg-app: #0B0F19;
  --bg-surface: #111827;
  --bg-surface-hover: #1F2937;
  
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-tertiary: #94A3B8;
  
  --border-subtle: #1F2937;
  --border-strong: #334155;

  --brand-primary: #1E293B;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.5;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  outline: none;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-tertiary); }

/* ==========================================================================
   App Shell Architecture
   ========================================================================== */

#app-shell {
  display: flex;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

.d-none {
  display: none !important;
}

/* Animations */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
  gap: var(--space-3);
}

.sidebar-header .logo-container {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #FFFFFF;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  width: 100%;
}

.sidebar-header .logo-container img {
  max-height: 70px;
  max-width: 100%;
  object-fit: contain;
}

.sidebar-header .brand-text h2 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.sidebar-header .brand-text span {
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}

.nav-item i {
  font-size: 18px;
}

.nav-item:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--brand-accent);
  color: #fff;
}
.nav-item.active i {
  color: #fff;
}

.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.user-snippet {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.avatar-circle {
  width: 36px;
  height: 36px;
  background: var(--status-info-bg);
  color: var(--status-info);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.user-info h4 {
  font-size: 13px;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.user-info p {
  font-size: 11px;
  color: var(--text-secondary);
}

.btn-logout {
  color: var(--text-tertiary);
  font-size: 18px;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.btn-logout:hover {
  color: var(--status-danger);
  background: var(--status-danger-bg);
}

/* Main Content Area */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg-app);
}

/* Top Header */
.top-header {
  min-height: var(--header-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-5);
  flex-shrink: 0;
}

.header-title-flex {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

#page-title-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 18px;
  transition: var(--transition);
  position: relative;
}
.icon-btn:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.notif-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 8px;
  height: 8px;
  background: var(--status-danger);
  border-radius: var(--radius-full);
}

.notif-badge-count {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--status-danger);
  color: white;
  border-radius: 50%;
  font-size: 10px;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.badge-count {
  background: var(--status-danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  margin-left: auto;
}

.lang-toggle-btn {
  padding: 0 var(--space-3);
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
}
.lang-toggle-btn:hover {
  border-color: var(--border-strong);
}

/* Page Container */
.page-container {
  flex: 1;
  padding: var(--space-6) var(--space-5);
  overflow-y: auto;
  overflow-x: hidden;
}

/* ==========================================================================
   RTL / Arabic Support
   ========================================================================== */
[dir="rtl"] body {
  font-family: var(--font-arabic);
}
[dir="rtl"] button, [dir="rtl"] input, [dir="rtl"] select, [dir="rtl"] textarea {
  font-family: var(--font-arabic);
}

[dir="rtl"] .sidebar {
  border-right: none;
  border-left: 1px solid var(--border-subtle);
}

[dir="rtl"] .nav-item {
  text-align: right;
}

[dir="rtl"] .sidebar-footer {
  flex-direction: row-reverse;
}
[dir="rtl"] .user-info {
  text-align: right;
}
[dir="rtl"] .badge-count {
  margin-left: 0;
  margin-right: auto;
}

/* ==========================================================================
   Responsive (Mobile)
   ========================================================================== */
.mobile-menu-btn {
  display: none;
}

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  z-index: 90;
}

.sidebar-backdrop.open {
  display: block;
}

@media (max-width: 1024px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    transform: translateX(-100%);
  }
  
  [dir="rtl"] .sidebar {
    left: auto;
    right: 0;
    transform: translateX(100%);
  }
  
  .sidebar.open {
    transform: translateX(0) !important;
    box-shadow: var(--shadow-lg);
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .page-container {
    padding: var(--space-4) var(--space-3);
  }
  
  .top-header {
    padding: 0 var(--space-3);
  }
}

/* ==========================================================================
   Mobile Small (≤ 640px)
   ========================================================================== */
@media (max-width: 640px) {
  :root {
    --header-height: 60px;
  }

  /* Tighten header on small screens */
  .top-header {
    min-height: var(--header-height);
    padding: 0 var(--space-2);
    gap: var(--space-2);
    flex-wrap: nowrap;
  }

  .header-title-flex {
    gap: var(--space-2);
    min-width: 0;
  }

  #page-title-text {
    font-size: 15px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
  }

  /* Header action buttons — tighter */
  .header-actions {
    gap: var(--space-1);
    flex-shrink: 0;
  }

  .icon-btn {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }

  /* Language toggle button smaller */
  #lang-toggle-btn {
    height: 30px;
    padding: 0 var(--space-2);
    font-size: 11px;
  }

  /* Sidebar header logo smaller */
  .sidebar-header {
    height: 64px;
    padding: 0 var(--space-3);
  }

  .sidebar-header .logo-container img {
    max-height: 48px;
  }

  /* More breathable page container */
  .page-container {
    padding: var(--space-3) var(--space-2);
  }

  /* Modal full-screen friendly */
  .modal-overlay {
    padding: var(--space-2);
    align-items: flex-end;
  }

  .modal-box {
    max-width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }

  .modal-box.modal-lg {
    max-width: 100%;
  }

  .modal-body {
    max-height: 65vh;
    padding: var(--space-4);
  }

  .modal-header,
  .modal-footer {
    padding: var(--space-3) var(--space-4);
  }

  /* Toast full-width at bottom */
  #toast-container {
    left: var(--space-3);
    right: var(--space-3);
    bottom: var(--space-3);
  }

  .toast {
    min-width: unset;
    width: 100%;
  }
}


/* ==========================================================================
   Utility Classes
   ========================================================================== */
.modal-box-sm {
  max-width: 400px;
}
.error-text-sm {
  font-size: 13px;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
  @page {
    size: landscape;
    margin: 10mm;
  }

  /* Hide UI elements not meant for printing */
  .sidebar, .top-header, .page-header, .tab-navigation, .table-toolbar {
    display: none !important;
  }
  
  /* Reset layout constraints */
  #app-shell, .main-content, .page-container, .table-responsive {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: visible !important;
    background: #fff !important;
  }
  
  /* Ensure table borders and colors print well */
  .data-table {
    width: 100% !important;
    border-collapse: collapse !important;
    page-break-inside: auto;
  }
  
  .data-table th, .data-table td {
    border: 1px solid #ccc !important;
    padding: 6px !important;
    color: #000 !important;
    background: #fff !important;
    white-space: normal !important;
    font-size: 11px !important;
    word-break: break-word !important;
  }

  .data-table tr {
    page-break-inside: avoid;
    page-break-after: auto;
  }
  
  /* Make sure dark mode is disabled for print */
  body, html {
    background-color: #fff !important;
    color: #000 !important;
  }

  /* Show the print headers */
  .report-header-print {
    display: block !important;
    text-align: center;
    margin-bottom: 20px;
    border-bottom: 2px solid #ccc;
    padding-bottom: 10px;
    color: #000 !important;
  }
  
  .report-header-print h2 {
    font-size: 24px !important;
    margin-bottom: 5px !important;
    color: #000 !important;
  }

  .report-header-print h4 {
    font-size: 18px !important;
    margin-bottom: 10px !important;
    color: #000 !important;
  }
}