/* ==========================================================================
   SHABAB ENGLISH - MODERN DESIGN SYSTEM & CSS CUSTOM PROPERTIES
   ========================================================================== */

:root {
  /* Typography */
  --font-family-base: 'Cairo', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Color Palette - Vibrant Emerald & Deep Teal Theme */
  --primary-rgb: 15, 118, 110;
  --primary-color: #0f766e;
  --primary-hover: #115e59;
  --primary-active: #042f2e;
  --primary-light: #ccfbf1;
  --primary-subtle: #e6fffa;
  --accent-color: #0d9488;
  
  /* Status & Feedback Colors */
  --success-color: #16a34a;
  --success-light: #dcfce7;
  --warning-color: #d97706;
  --warning-light: #fef3c7;
  --danger-color: #dc2626;
  --danger-light: #fee2e2;
  --info-color: #0284c7;
  --info-light: #e0f2fe;

  /* Surface & Glass Tokens */
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-blur: blur(16px) saturate(180%);

  /* Layout & Dimensions */
  --header-height: 60px;
  --bottom-nav-height: 66px;
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --border-radius-xs: 6px;
  --border-radius-sm: 10px;
  --border-radius-md: 14px;
  --border-radius-lg: 24px;
  --border-radius-pill: 50rem;
  
  /* Shadows & Elevation */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 2px 8px rgba(15, 118, 110, 0.06);
  --shadow-md: 0 6px 18px rgba(15, 118, 110, 0.1);
  --shadow-lg: 0 12px 32px rgba(15, 118, 110, 0.14);
  --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.18);
  --glow-primary: 0 0 20px rgba(15, 118, 110, 0.25);

  /* Sticky Table Offsets */
  --sticky-col-check-width: 46px;
}

[data-bs-theme="dark"] {
  --primary-rgb: 20, 184, 166;
  --primary-color: #14b8a6;
  --primary-hover: #2dd4bf;
  --primary-active: #5eead4;
  --primary-light: #134e4a;
  --primary-subtle: #042f2e;
  
  --glass-bg: rgba(20, 24, 33, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.45);
  --glow-primary: 0 0 20px rgba(20, 184, 166, 0.3);
}

/* ==========================================================================
   GLOBAL RESETS & TYPOGRAPHY
   ========================================================================== */

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-base);
  background-color: var(--bs-body-bg);
  color: var(--bs-body-color);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  overflow-x: hidden;
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(100, 116, 139, 0.25);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 116, 139, 0.45);
}

/* Touch Targets >= 44px for accessibility */
button, 
.btn, 
.form-control, 
.form-select, 
.nav-link {
  min-height: 44px;
  touch-action: manipulation;
}

.form-check-input {
  touch-action: manipulation;
  width: 1.2rem !important;
  height: 1.2rem !important;
  min-height: 1.2rem !important;
  max-height: 1.2rem !important;
  aspect-ratio: 1 / 1 !important;
  flex-shrink: 0;
}

.form-control, .form-select {
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--bs-border-color);
  font-family: var(--font-family-base);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(var(--primary-rgb), 0.15);
}

/* Utility Helpers */
.max-w-xl {
  max-width: 1140px;
  margin-left: auto;
  margin-right: auto;
}

.fs-7 { font-size: 0.85rem; }
.fs-8 { font-size: 0.775rem; }
.letter-spacing-lg { letter-spacing: 0.25em; }

.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Custom Buttons & Chips */
.btn {
  font-family: var(--font-family-base);
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn:active {
  transform: scale(0.97);
}

.btn-icon {
  width: 42px;
  height: 42px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  border-radius: 50% !important;
  transition: background-color 0.2s ease, transform 0.15s ease;
}

.btn-icon:hover {
  background-color: rgba(var(--primary-rgb), 0.1) !important;
  color: var(--primary-color) !important;
}

.btn-pill {
  border-radius: var(--border-radius-pill);
  padding: 0.4rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-xs);
}

.btn-chip {
  border-radius: var(--border-radius-pill);
  background-color: var(--bs-tertiary-bg);
  border: 1px solid var(--bs-border-color);
  color: var(--bs-body-color);
  white-space: nowrap;
  font-size: 0.825rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  transition: all 0.2s ease;
}

.btn-chip:active, .btn-chip:hover {
  background-color: var(--primary-light);
  color: var(--primary-color);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

/* Status Indicators */
.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
}
.status-online { 
  background-color: var(--success-color);
  box-shadow: 0 0 8px var(--success-color);
  animation: pulse-online 2s infinite;
}
.status-offline { 
  background-color: var(--danger-color); 
}

@keyframes pulse-online {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 6px rgba(22, 163, 74, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(22, 163, 74, 0); }
}

/* ==========================================================================
   GATE SCREEN (Passcode Login)
   ========================================================================== */

.gate-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  background: radial-gradient(circle at 50% 30%, rgba(var(--primary-rgb), 0.15) 0%, var(--bs-body-bg) 70%);
  backdrop-filter: blur(8px);
  padding: 1.25rem;
}

.gate-card {
  width: 100%;
  max-width: 420px;
  border-radius: var(--border-radius-lg) !important;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border) !important;
  box-shadow: var(--shadow-xl) !important;
}

.gate-icon-wrapper {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light) 0%, rgba(var(--primary-rgb), 0.2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glow-primary);
  animation: float-icon 4s ease-in-out infinite;
}

@keyframes float-icon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ==========================================================================
   APP HEADER & NAVIGATION
   ========================================================================== */

.app-header {
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--bs-border-color-translucent) !important;
  z-index: 1020;
  box-shadow: var(--shadow-sm);
}

.brand-badge {
  width: 38px;
  height: 38px;
  font-size: 1.15rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%) !important;
  box-shadow: 0 4px 10px rgba(var(--primary-rgb), 0.3);
}

/* Fixed Bottom Navigation Bar (Mobile / Tablet) */
.bottom-nav {
  height: calc(var(--bottom-nav-height) + var(--safe-area-bottom));
  padding-bottom: var(--safe-area-bottom);
  z-index: 1030;
  background: var(--glass-bg) !important;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--bs-border-color-translucent) !important;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
}

.bottom-nav .nav-link {
  color: var(--bs-secondary-color);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  min-width: 68px;
  border-radius: var(--border-radius-md);
  position: relative;
}

.bottom-nav .nav-link .nav-icon {
  font-size: 1.35rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.bottom-nav .nav-link .nav-label {
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 3px;
}

.bottom-nav .nav-link.active {
  color: var(--primary-color) !important;
  background-color: rgba(var(--primary-rgb), 0.08);
}

.bottom-nav .nav-link.active .nav-icon {
  transform: translateY(-2px) scale(1.1);
}

/* ==========================================================================
   FLOATING ACTION BUTTON (FAB) & BULK ACTION BAR
   ========================================================================== */

.fab-btn {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + 16px);
  left: 18px; /* RTL position */
  z-index: 1025;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%) !important;
  border: none !important;
  box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.4) !important;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
}

.fab-btn:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 30px rgba(var(--primary-rgb), 0.5) !important;
}

.fab-btn:active {
  transform: scale(0.95);
}

.bulk-bar {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom));
  left: 0;
  right: 0;
  z-index: 1028;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--bs-border-color);
  transform: translateY(120%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-lg);
}

.bulk-bar.show {
  transform: translateY(0);
}

/* ==========================================================================
   CONTROLS BAR & CARDS
   ========================================================================== */

.controls-bar {
  background-color: var(--bs-card-bg);
  border-radius: var(--border-radius-md) !important;
  border: 1px solid var(--bs-border-color-translucent) !important;
  box-shadow: var(--shadow-sm) !important;
}

.card {
  border-radius: var(--border-radius-md);
  transition: box-shadow 0.25s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   RTL STICKY FIRST COLUMN TABLE (ENHANCED)
   ========================================================================== */

.custom-table-wrapper {
  max-height: calc(100vh - 240px);
  overflow-x: auto;
  overflow-y: auto;
  border-radius: var(--border-radius-md);
}

.rtl-sticky-table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
}

.rtl-sticky-table thead th {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: var(--bs-tertiary-bg) !important;
  border-bottom: 2px solid var(--bs-border-color);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--bs-secondary-color);
  padding: 0.75rem 0.85rem;
}

/* Sticky Checkbox Column (Column 1) */
.rtl-sticky-table .col-sticky-check {
  position: sticky;
  right: 0; /* RTL alignment */
  z-index: 11;
  background-color: var(--bs-body-bg);
  width: var(--sticky-col-check-width);
  min-width: var(--sticky-col-check-width);
}

/* Sticky Name Column (Column 2) */
.rtl-sticky-table .col-sticky-name {
  position: sticky;
  right: var(--sticky-col-check-width);
  z-index: 11;
  background-color: var(--bs-body-bg);
  box-shadow: -4px 0 8px -3px rgba(0, 0, 0, 0.08);
  font-weight: 700;
}

/* عندما يكون العمود هو الأول في الجدول (مثل جدول المعلمين) */
.rtl-sticky-table th.col-sticky-name:first-child,
.rtl-sticky-table td.col-sticky-name:first-child {
  right: 0 !important;
}

.rtl-sticky-table thead th.col-sticky-check,
.rtl-sticky-table thead th.col-sticky-name {
  z-index: 12;
  background-color: var(--bs-tertiary-bg) !important;
}

.rtl-sticky-table tbody tr {
  transition: background-color 0.15s ease;
}

.rtl-sticky-table tbody tr:hover td.col-sticky-check,
.rtl-sticky-table tbody tr:hover td.col-sticky-name,
.rtl-sticky-table tbody tr:hover td {
  background-color: rgba(var(--primary-rgb), 0.04) !important;
}

.rtl-sticky-table td {
  padding: 0.75rem 0.85rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--bs-border-color-translucent);
}

/* Skeleton Loading State */
.skeleton-box {
  height: 18px;
  background: linear-gradient(90deg, var(--bs-tertiary-bg) 25%, var(--bs-secondary-bg) 50%, var(--bs-tertiary-bg) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--border-radius-xs);
}
.skeleton-box.sm { width: 45px; }
.skeleton-box.md { width: 95px; }
.skeleton-box.lg { width: 150px; }

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ==========================================================================
   FORM CHECK CARDS & SEGMENTED RADIO BUTTONS (FIX FOR FLOATING DOTS)
   ========================================================================== */

.form-check-card {
  position: relative;
  display: flex !important;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.65rem 1rem !important;
  border-radius: var(--border-radius-sm) !important;
  border: 1.5px solid var(--bs-border-color) !important;
  background-color: var(--bs-body-bg) !important;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  min-height: 48px;
  margin-bottom: 0 !important;
  user-select: none;
}

.form-check-card .form-check-input {
  float: none !important;
  margin: 0 !important;
  position: static !important;
  width: 1.2rem !important;
  height: 1.2rem !important;
  min-height: 1.2rem !important;
  max-height: 1.2rem !important;
  aspect-ratio: 1 / 1 !important;
  flex-shrink: 0 !important;
  border-radius: 50% !important;
  cursor: pointer;
}

.form-check-card .form-check-label {
  margin: 0 !important;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.925rem;
}

.form-check-card:has(.form-check-input:checked),
.form-check-card.active {
  border-color: var(--primary-color) !important;
  background-color: rgba(var(--primary-rgb), 0.08) !important;
  color: var(--primary-color) !important;
  box-shadow: 0 0 0 1px var(--primary-color);
}

.form-check-card:hover {
  border-color: var(--primary-color) !important;
}

/* ==========================================================================
   GENERIC BOTTOM SHEET & MODALS
   ========================================================================== */

.sheet-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  z-index: 1040;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.sheet-backdrop.show {
  opacity: 1;
}

.bottom-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: 88vh;
  z-index: 1050;
  background-color: var(--bs-body-bg);
  border-top-left-radius: var(--border-radius-lg);
  border-top-right-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.bottom-sheet.show {
  transform: translateY(0);
}

.sheet-header {
  flex-shrink: 0;
}

.sheet-drag-handle {
  width: 44px;
  height: 5px;
  border-radius: 3px;
  background-color: var(--bs-secondary-border-subtle);
  flex-shrink: 0;
}

.sheet-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding-bottom: 1.5rem !important;
  scroll-behavior: smooth;
}

.sheet-footer {
  flex-shrink: 0;
  position: relative !important;
  z-index: 20;
  background-color: var(--bs-body-bg) !important;
  border-top: 1px solid var(--bs-border-color) !important;
}

.sheet-body select,
.filter-row select {
  cursor: pointer;
}

.sheet-body select option,
.filter-row select option {
  padding: 0.6rem 0.85rem;
  font-size: 0.925rem;
}

.modal-content {
  border-radius: var(--border-radius-lg) !important;
  border: 1px solid var(--bs-border-color-translucent);
  box-shadow: var(--shadow-xl);
}

/* Timeline & Log Items */
.timeline-item {
  border-radius: var(--border-radius-md) !important;
  border: 1px solid var(--bs-border-color-translucent) !important;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.timeline-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md) !important;
}

/* Empty State */
.empty-state {
  border: 2px dashed var(--bs-border-color);
  border-radius: var(--border-radius-lg);
}

/* ==========================================================================
   RESPONSIVE LAYOUT BREAKPOINTS (TABLET & DESKTOP ENHANCEMENTS)
   ========================================================================== */

/* Tablet & Larger Screens (>= 768px) */
@media (min-width: 768px) {
  .app-main {
    padding-top: 1.5rem;
    padding-bottom: 3rem;
  }

  .controls-bar {
    padding: 1.25rem !important;
  }

  .bottom-sheet {
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
    border-radius: var(--border-radius-lg);
    top: 50%;
    bottom: auto;
    transform: translateY(-40%) scale(0.95);
    opacity: 0;
    max-height: 85vh;
    border: 1px solid var(--bs-border-color);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
  }

  .bottom-sheet.show {
    transform: translateY(-50%) scale(1);
    opacity: 1;
  }

  .sheet-drag-handle {
    display: none;
  }

  .fab-btn {
    left: calc(50% - 540px); /* Positioned relative to centered app container */
    padding: 0.65rem 1.5rem !important;
  }

  .bulk-bar {
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
    border-radius: var(--border-radius-md);
    bottom: calc(var(--bottom-nav-height) + 16px);
    border: 1px solid var(--bs-border-color);
  }
}

/* Laptop & Desktop Screens (>= 992px) */
@media (min-width: 992px) {
  :root {
    --header-height: 68px;
  }

  .app-header .container-fluid {
    padding-left: 2rem !important;
    padding-right: 2rem !important;
  }

  /* Expand controls bar row on large screens */
  .controls-bar .row {
    align-items: center;
  }

  .custom-table-wrapper {
    max-height: calc(100vh - 280px);
  }

  .fab-btn {
    left: 40px;
  }
}

/* Mobile Screen Adjustments (< 576px) */
@media (max-width: 576px) {
  .rtl-sticky-table th,
  .rtl-sticky-table td {
    padding: 0.6rem 0.5rem !important;
    font-size: 0.825rem !important;
    white-space: nowrap;
  }

  .rtl-sticky-table .badge {
    font-size: 0.725rem !important;
    padding: 0.3em 0.6em !important;
  }

  .rtl-sticky-table .btn-sm {
    padding: 0.25rem 0.45rem !important;
    font-size: 0.85rem !important;
  }

  .custom-table-wrapper {
    max-height: calc(100vh - 210px);
    -webkit-overflow-scrolling: touch;
    border-radius: var(--border-radius-sm);
  }
}
/* ==========================================================================
   SEARCHABLE SELECT (قائمة منسدلة بالبحث)
   ========================================================================== */

/* الغلاف نفسه هو ما يجب رفعه، لا القائمة وحدها: z-index على قائمة داخل غلاف
   بلا z-index لا يرفعها فوق العناصر التالية في النموذج (تنبيه المعلم، بطاقة
   بيانات الجامعة) — كانت القائمة تُفتح فترسم تحتها. */
.searchable-select {
  position: relative;
}

.searchable-select.is-open {
  z-index: 1080;
}

/* خانة البحث تبدو كقائمة منسدلة عادية مع سهم على اليسار (RTL) */
.searchable-input {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: left 0.75rem center;
  background-size: 16px 12px;
  padding-left: 2.25rem;
  cursor: text;
}

.searchable-menu {
  position: absolute;
  z-index: 1;
  inset-inline: 0;
  top: calc(100% + 4px);
  max-height: 260px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: #fff;
  border: 1px solid var(--bs-border-color);
  border-radius: var(--border-radius-sm);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 0.25rem;
}

.searchable-item {
  display: block;
  width: 100%;
  text-align: right;
  border: 0;
  background: transparent;
  border-radius: calc(var(--border-radius-sm) - 2px);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-family-base);
  font-size: 0.925rem;
  color: var(--bs-body-color);
  cursor: pointer;
}

.searchable-item.is-active {
  background: var(--primary-subtle);
  color: var(--primary-active);
}

.searchable-item.is-current {
  font-weight: 700;
  color: var(--primary-color);
}

.searchable-item.is-current::after {
  content: '\2713';
  float: left;
}

.searchable-empty {
  text-align: center;
}

/* لا مساحة تحت الخانة — تُفتح القائمة لأعلى */
.searchable-menu.drop-up {
  top: auto;
  bottom: calc(100% + 4px);
}