/* ==========================================================================
   Signal Rail — Royal Blue Theme
   Elegant and prestigious design for enterprise applications
   ========================================================================== */

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

:root {
  /* ===== Royal Blue Palette ===== */
  --royal-50: #EEF2FF;
  --royal-100: #E0E7FF;
  --royal-200: #C7D2FE;
  --royal-300: #A5B4FC;
  --royal-400: #818CF8;
  --royal-500: #6366F1;
  --royal-600: #4F46E5;
  --royal-700: #4338CA;
  --royal-800: #3730A3;
  --royal-900: #312E81;
  
  /* ===== Neutral Palette ===== */
  --neutral-50: #F8FAFC;
  --neutral-100: #F1F5F9;
  --neutral-200: #E2E8F0;
  --neutral-300: #CBD5E1;
  --neutral-400: #94A3B8;
  --neutral-500: #64748B;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1E293B;
  --neutral-900: #0F172A;
  
  /* ===== Semantic Colors ===== */
  --success-500: #10B981;
  --success-600: #059669;
  --warning-500: #F59E0B;
  --warning-600: #D97706;
  --danger-500: #EF4444;
  --danger-600: #DC2626;
  --info-500: #06B6D4;
  --info-600: #0891B2;

  /* ===== Design Tokens ===== */
  --color-primary: var(--royal-600);
  --color-primary-hover: var(--royal-700);
  --color-primary-light: var(--royal-100);
  --color-primary-dark: var(--royal-800);
  --color-primary-gradient: linear-gradient(135deg, var(--royal-600) 0%, var(--royal-700) 100%);
  
  --color-bg: var(--neutral-50);
  --color-surface: #FFFFFF;
  --color-text: var(--neutral-900);
  --color-text-secondary: var(--neutral-500);
  --color-text-muted: var(--neutral-400);
  --color-border: var(--neutral-200);
  
  --color-sidebar: var(--royal-900);
  --color-sidebar-text: rgba(255, 255, 255, 0.6);
  --color-sidebar-text-hover: #FFFFFF;
  --color-sidebar-active: var(--royal-400);
  --color-sidebar-hover-bg: rgba(255, 255, 255, 0.06);
  --color-sidebar-active-bg: rgba(99, 102, 241, 0.15);
  
  --color-navbar: var(--royal-900);
  --color-navbar-text: rgba(255, 255, 255, 0.7);

  /* ===== Spacing ===== */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* ===== Radius ===== */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-full: 9999px;

  /* ===== Shadows ===== */
  --shadow-sm: 0 1px 3px rgba(55, 48, 163, 0.06);
  --shadow-md: 0 4px 16px rgba(55, 48, 163, 0.08);
  --shadow-lg: 0 8px 32px rgba(55, 48, 163, 0.10);
  --shadow-xl: 0 12px 48px rgba(55, 48, 163, 0.14);

  /* ===== Typography ===== */
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;

  /* ===== Transitions ===== */
  --transition-fast: 0.1s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* ===== Bootstrap Overrides ===== */
  --bs-primary: var(--color-primary);
  --bs-primary-rgb: 79, 70, 229;
  --bs-secondary: var(--neutral-600);
  --bs-secondary-rgb: 71, 85, 105;
  --bs-success: var(--success-500);
  --bs-success-rgb: 16, 185, 129;
  --bs-info: var(--info-500);
  --bs-info-rgb: 6, 182, 212;
  --bs-warning: var(--warning-500);
  --bs-warning-rgb: 245, 158, 11;
  --bs-danger: var(--danger-500);
  --bs-danger-rgb: 239, 68, 68;
  --bs-dark: var(--neutral-800);
  --bs-dark-rgb: 30, 41, 59;
  --bs-light: var(--neutral-50);
  --bs-light-rgb: 248, 250, 252;
  --bs-body-font-family: var(--font-ui);
  --bs-body-color: var(--color-text);
  --bs-body-bg: var(--color-bg);
  --bs-border-radius: var(--radius-sm);
  --bs-border-radius-lg: var(--radius-md);
  --bs-border-color: var(--color-border);
  --bs-link-color: var(--color-primary);
  --bs-link-hover-color: var(--color-primary-hover);
  --bs-link-color-rgb: 79, 70, 229;
  --bs-link-hover-color-rgb: 67, 56, 202;
}

/* ==========================================================================
   BASE
   ========================================================================== */

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

body {
  font-family: var(--font-ui);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code, .font-mono, .task-id, .timestamp {
  font-family: var(--font-mono);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* ==========================================================================
   SCROLLBAR — Royal Blue
   ========================================================================== */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--neutral-100);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-hover);
}

::selection {
  background: var(--royal-200);
  color: var(--royal-800);
}

/* ==========================================================================
   CARDS — Royal Blue Rail
   ========================================================================== */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card-header {
  background: transparent;
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-5);
  font-weight: 600;
  color: var(--color-text);
}

.card-body {
  padding: var(--space-5);
}

.card-footer {
  background: transparent;
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-5);
}

/* ==========================================================================
   SIDEBAR — Royal Blue
   ========================================================================== */

#sidebar {
  background: var(--color-sidebar) !important;
  border-right: 1px solid rgba(255, 255, 255, 0.04);
  min-height: calc(100vh - 56px);
  overflow-y: auto;
}

#sidebar .navbar-brand {
  color: #FFFFFF !important;
  font-weight: 700;
  padding: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

#sidebar .navbar-brand i {
  color: var(--color-primary);
  font-size: 1.2rem;
}

#sidebar .navbar-brand small {
  font-size: 0.65rem;
  opacity: 0.4;
  font-weight: 400;
}

#sidebar .nav-link {
  border-radius: 0;
  border-left: 3px solid transparent;
  padding: var(--space-3) var(--space-4);
  padding-left: calc(var(--space-4) - 3px);
  transition: all var(--transition-fast);
  color: var(--color-sidebar-text) !important;
  font-weight: 500;
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

#sidebar .nav-link i {
  width: 1.25rem;
  text-align: center;
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.25);
  transition: color var(--transition-fast);
}

#sidebar .nav-link:hover {
  background: var(--color-sidebar-hover-bg);
  border-left-color: var(--color-primary);
  color: var(--color-sidebar-text-hover) !important;
}

#sidebar .nav-link:hover i {
  color: var(--color-primary);
}

#sidebar .nav-link.active {
  background: var(--color-sidebar-active-bg);
  border-left-color: var(--color-primary);
  color: var(--color-sidebar-text-hover) !important;
}

#sidebar .nav-link.active i {
  color: var(--color-primary);
}

#sidebar .text-uppercase {
  color: rgba(255, 255, 255, 0.2) !important;
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  padding: var(--space-3) var(--space-4);
  margin-top: var(--space-2);
  font-weight: 600;
}

/* ==========================================================================
   RTL SIDEBAR
   ========================================================================== */

[dir="rtl"] #sidebar .nav-link {
  border-left: none;
  border-right: 3px solid transparent;
  padding-left: var(--space-4);
  padding-right: calc(var(--space-4) - 3px);
}

[dir="rtl"] #sidebar .nav-link.active,
[dir="rtl"] #sidebar .nav-link:hover {
  border-left-color: transparent;
  border-right-color: var(--color-primary);
}

[dir="rtl"] #sidebar {
  border-right: none;
  border-left: 1px solid rgba(255, 255, 255, 0.04);
}

/* ==========================================================================
   SIDEBAR RESPONSIVE
   ========================================================================== */

@media (max-width: 992px) {
  #sidebar {
    position: fixed;
    z-index: 1030;
    left: -280px;
    transition: left var(--transition-slow);
    width: 280px;
    min-height: 100vh;
    box-shadow: var(--shadow-xl);
  }
  #sidebar.show { left: 0; }

  [dir="rtl"] #sidebar {
    left: auto;
    right: -280px;
  }
  [dir="rtl"] #sidebar.show { right: 0; }
}

/* ==========================================================================
   TOP NAVBAR — Royal Blue
   ========================================================================== */

.navbar.bg-primary {
  background: var(--color-navbar) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  padding: 0.5rem 1rem;
  min-height: 56px;
}

.navbar-brand {
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.navbar-brand i {
  color: var(--color-primary);
}

.navbar .btn-outline-light {
  color: var(--color-navbar-text);
  border-color: rgba(255, 255, 255, 0.1);
  padding: 0.3rem 0.7rem;
  font-size: var(--font-size-sm);
}

.navbar .btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.2);
}

.navbar .btn-light {
  color: var(--neutral-700);
  background: rgba(255, 255, 255, 0.9);
  padding: 0.3rem 0.7rem;
  font-size: var(--font-size-sm);
}

.navbar .btn-light:hover {
  background: #FFFFFF;
}

.navbar .dropdown-toggle {
  color: var(--color-navbar-text);
}

.navbar .dropdown-toggle:hover {
  color: #FFFFFF;
}

.navbar .form-control-sm {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  border-radius: var(--radius-full);
  padding: 0.3rem 1rem;
}

.navbar .form-control-sm::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.navbar .form-control-sm:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* ==========================================================================
   BUTTONS — Royal Blue
   ========================================================================== */

.btn {
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
}

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.btn-outline-primary {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: transparent;
}

.btn-outline-primary:hover, .btn-outline-primary:focus {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.btn-success {
  background-color: var(--success-500);
  border-color: var(--success-500);
  color: #FFFFFF;
}

.btn-success:hover {
  background-color: var(--success-600);
  border-color: var(--success-600);
}

.btn-danger {
  background-color: var(--danger-500);
  border-color: var(--danger-500);
  color: #FFFFFF;
}

.btn-danger:hover {
  background-color: var(--danger-600);
  border-color: var(--danger-600);
}

.btn-warning {
  background-color: var(--warning-500);
  border-color: var(--warning-500);
  color: #FFFFFF;
}

.btn-warning:hover {
  background-color: var(--warning-600);
  border-color: var(--warning-600);
}

.btn-sm {
  padding: 0.3rem 0.8rem;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 0.65rem 1.5rem;
  font-size: var(--font-size-base);
}

.btn:focus, .form-control:focus, .form-select:focus {
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

/* ==========================================================================
   BADGES — Royal Blue
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: currentColor;
  opacity: 0.8;
  flex-shrink: 0;
}

.badge.bg-primary {
  background-color: var(--color-primary) !important;
  color: #FFFFFF;
}

.badge.bg-success {
  background-color: var(--success-500) !important;
  color: #FFFFFF;
}

.badge.bg-warning {
  background-color: var(--warning-500) !important;
  color: #FFFFFF;
}

.badge.bg-danger {
  background-color: var(--danger-500) !important;
  color: #FFFFFF;
}

.badge.bg-info {
  background-color: var(--info-500) !important;
  color: #FFFFFF;
}

/* ==========================================================================
   TABLES — Royal Blue
   ========================================================================== */

.table {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.table thead th {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--neutral-500);
  border-bottom: 2px solid var(--color-primary);
  font-weight: 700;
  padding: var(--space-3) var(--space-4);
  background: var(--neutral-100);
}

.table td {
  padding: var(--space-3) var(--space-4);
  vertical-align: middle;
  border-bottom: 1px solid var(--color-border);
}

.table-hover tbody tr:hover {
  background: var(--royal-50);
  transition: background var(--transition-fast);
}

/* ==========================================================================
   FORMS — Royal Blue
   ========================================================================== */

.form-control,
.form-select {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.85rem;
  transition: all var(--transition-fast);
  background: var(--color-surface);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.08);
  outline: none;
}

.form-label {
  font-weight: 600;
  font-size: var(--font-size-xs);
  color: var(--neutral-500);
  margin-bottom: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-check-input:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ==========================================================================
   ALERTS — Royal Blue
   ========================================================================== */

.alert {
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert-primary {
  background: var(--royal-50);
  color: var(--royal-800);
  border-left: 3px solid var(--color-primary);
}

.alert-success {
  background: #ECFDF5;
  color: #047857;
  border-left: 3px solid var(--success-500);
}

.alert-warning {
  background: #FFFBEB;
  color: #B45309;
  border-left: 3px solid var(--warning-500);
}

.alert-danger {
  background: #FEF2F2;
  color: #B91C1C;
  border-left: 3px solid var(--danger-500);
}

.alert-info {
  background: #ECFEFF;
  color: #0E7490;
  border-left: 3px solid var(--info-500);
}

/* ==========================================================================
   PAGINATION — Royal Blue
   ========================================================================== */

.page-item.active .page-link {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
}

.page-link {
  color: var(--color-primary);
  border-color: var(--color-border);
  font-weight: 500;
}

.page-link:hover {
  color: var(--color-primary-hover);
  background: var(--royal-50);
  border-color: var(--color-border);
}

/* ==========================================================================
   NAV TABS — Royal Blue
   ========================================================================== */

.nav-tabs {
  border-bottom: 2px solid var(--color-border);
}

.nav-tabs .nav-link {
  color: var(--neutral-500);
  border: none;
  padding: var(--space-3) var(--space-4);
  font-weight: 600;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-size: var(--font-size-sm);
}

.nav-tabs .nav-link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: transparent;
}

.nav-tabs .nav-link:hover:not(.active) {
  color: var(--color-primary-hover);
  border-bottom-color: var(--color-border);
}

.nav-pills .nav-link.active {
  background: var(--color-primary);
  color: #FFFFFF;
}

/* ==========================================================================
   DROPDOWN — Royal Blue
   ========================================================================== */

.dropdown-item:active {
  background: var(--color-primary);
  color: #FFFFFF;
}

.dropdown-item:hover {
  background: var(--royal-50);
  color: var(--color-primary);
}

.dropdown-menu {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-2) 0;
}

.dropdown-divider {
  border-color: var(--color-border);
}

/* ==========================================================================
   PROGRESS — Royal Blue
   ========================================================================== */

.progress {
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  height: 6px;
}

.progress-bar {
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}

/* ==========================================================================
   BREADCRUMB — Royal Blue
   ========================================================================== */

.breadcrumb-item a {
  color: var(--neutral-500);
  text-decoration: none;
}

.breadcrumb-item a:hover {
  color: var(--color-primary);
}

.breadcrumb-item.active {
  color: var(--color-text);
  font-weight: 600;
}

/* ==========================================================================
   MODAL — Royal Blue
   ========================================================================== */

.modal-content {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.modal-header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-5);
}

.modal-body {
  padding: var(--space-5);
}

.modal-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-5);
}

/* ==========================================================================
   MAIN CONTENT
   ========================================================================== */

main {
  background: var(--color-bg) !important;
  min-height: calc(100vh - 56px);
}

/* ==========================================================================
   EMPTY STATE
   ========================================================================== */

.display-3 {
  color: var(--color-primary) !important;
  opacity: 0.2;
}

.empty-state .icon {
  font-size: 4rem;
  color: var(--neutral-300);
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   RTL
   ========================================================================== */

[dir="rtl"] .border-start {
  border-left: 0 !important;
  border-right: 2px solid var(--bs-border-color) !important;
}

[dir="rtl"] .border-end {
  border-right: 0 !important;
  border-left: 2px solid var(--bs-border-color) !important;
}

[dir="rtl"] .ms-auto {
  margin-left: 0 !important;
  margin-right: auto !important;
}

[dir="rtl"] .me-2 {
  margin-right: 0 !important;
  margin-left: 0.5rem !important;
}

/* ==========================================================================
   SIDEBAR TOGGLE
   ========================================================================== */

#sidebarToggle {
  color: rgba(255, 255, 255, 0.6);
  border-color: rgba(255, 255, 255, 0.08);
  padding: 0.3rem 0.6rem;
}

#sidebarToggle:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
}

/* ==========================================================================
   UTILITIES — Royal Blue
   ========================================================================== */

.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--neutral-500) !important; }
.text-success { color: var(--success-500) !important; }
.text-danger { color: var(--danger-500) !important; }
.text-warning { color: var(--warning-500) !important; }
.text-info { color: var(--info-500) !important; }
.text-muted { color: var(--neutral-400) !important; }

.bg-primary { background-color: var(--color-primary) !important; }
.bg-secondary { background-color: var(--neutral-100) !important; }
.bg-success { background-color: var(--success-500) !important; }
.bg-danger { background-color: var(--danger-500) !important; }
.bg-warning { background-color: var(--warning-500) !important; }
.bg-info { background-color: var(--info-500) !important; }
.bg-light { background-color: var(--neutral-50) !important; }
.bg-dark { background-color: var(--neutral-800) !important; }
.bg-white { background-color: #FFFFFF !important; }

.border-primary { border-color: var(--color-primary) !important; }
.border-success { border-color: var(--success-500) !important; }
.border-danger { border-color: var(--danger-500) !important; }
.border-warning { border-color: var(--warning-500) !important; }
.border-info { border-color: var(--info-500) !important; }

.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }


/* ============================================================================
   Application compatibility layer
   Keeps the existing mobile navigation and responsive behavior while using the
   attached Royal Blue reference theme as the source of truth.
   ============================================================================ */

body { min-width: 320px; }

#sidebarBackdrop { display: none; }

@media (max-width: 992px) {
  #sidebar {
    top: 56px;
    height: calc(100vh - 56px);
    min-height: 0;
    overflow-y: auto;
  }

  #sidebar.show + #sidebarBackdrop,
  #sidebarBackdrop.show {
    display: block;
    position: fixed;
    inset: 56px 0 0;
    z-index: 1020;
    background: rgba(15, 23, 42, 0.55);
  }

  main { padding: 1.25rem !important; }
}

@media (max-width: 768px) {
  body { font-size: 0.9rem; }
  main { padding: 0.85rem !important; }
  .navbar-brand { font-size: 0.95rem; }
  .card-body { padding: var(--space-4) !important; }
  .btn, .form-control, .form-select, .nav-link { min-height: 42px; }
  .table td, .table th { padding: 0.65rem 0.5rem; font-size: 0.875rem; }
  .table-responsive { -webkit-overflow-scrolling: touch; }
}

@media (max-width: 576px) {
  .d-flex.gap-2, .d-flex.gap-3 { flex-wrap: wrap; }
  .modal-dialog { margin: 0.5rem; }
  .navbar .btn-group { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


/* ============================================================================
   Alignment correction layer
   CSS-only layout fixes for the existing fixed navbar + flex sidebar markup.
   ============================================================================ */

html,
body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

.navbar.fixed-top {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1040;
  width: 100%;
  min-height: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.navbar.fixed-top > * {
  flex-shrink: 0;
}

.navbar.fixed-top .navbar-brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  white-space: nowrap;
  line-height: 1;
}

.navbar.fixed-top form {
  min-width: 0;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
}

.navbar.fixed-top > .ms-auto {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  min-width: 0;
  margin-left: auto !important;
}

.navbar.fixed-top .dropdown,
.navbar.fixed-top .btn-group {
  flex: 0 0 auto;
}

.navbar.fixed-top .dropdown-menu {
  z-index: 1060;
  margin-top: 0.5rem !important;
}

/* The page wrapper is the flex row created by the shared layout. */
body > .d-flex,
body > div.d-flex {
  width: 100%;
  min-width: 0;
  min-height: calc(100vh - 56px);
  align-items: stretch;
}

body > .d-flex > #sidebar,
body > div.d-flex > #sidebar {
  flex: 0 0 240px;
  width: 240px !important;
}

body > .d-flex > main,
body > div.d-flex > main {
  flex: 1 1 auto;
  width: auto !important;
  min-width: 0;
  max-width: none;
  overflow-x: hidden;
}

main > .row {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
}

.card,
.table-responsive,
.table {
  max-width: 100%;
}

.table-responsive {
  overflow-x: auto;
  overflow-y: hidden;
}

/* Keep action bars aligned without forcing buttons out of the viewport. */
main .d-flex.justify-content-between,
main .d-flex.align-items-center {
  min-width: 0;
}

main .d-flex.justify-content-between > :first-child {
  min-width: 0;
}

@media (max-width: 991.98px) {
  .navbar.fixed-top form {
    display: none !important;
  }

  body > .d-flex > #sidebar,
  body > div.d-flex > #sidebar {
    flex: 0 0 280px;
    width: 280px !important;
  }

  body > .d-flex > main,
  body > div.d-flex > main {
    width: 100% !important;
    flex: 1 1 100%;
  }
}

@media (max-width: 767.98px) {
  .navbar.fixed-top {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .navbar.fixed-top > .ms-auto {
    gap: 0.35rem !important;
  }

  .navbar.fixed-top .dropdown-toggle {
    max-width: 42px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: clip;
    padding-left: 0.55rem;
    padding-right: 0.55rem;
  }

  .navbar.fixed-top .dropdown-toggle .me-1 {
    margin-right: 0 !important;
  }

  main > .d-flex.justify-content-between,
  main > .d-flex.align-items-start {
    align-items: stretch !important;
    gap: 0.75rem !important;
  }

  main > .d-flex.justify-content-between > :last-child,
  main > .d-flex.align-items-start > :last-child {
    width: 100%;
  }

  main > .d-flex.justify-content-between .btn,
  main > .d-flex.align-items-start .btn {
    flex: 1 1 auto;
  }
}

@media (max-width: 575.98px) {
  .navbar.fixed-top .navbar-brand {
    max-width: 46vw;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .navbar.fixed-top .btn {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
}

[dir="rtl"] .navbar.fixed-top > .ms-auto {
  margin-left: 0 !important;
  margin-right: auto !important;
}