/* ============================================================
   custom-theme.css v1.0
   Complete Bootstrap 5.3 design system override.
   Every component. Light + dark. Custom app shell + utilities.
   ============================================================ */


/* ════════════════════════════════════════════════════════════
   § 1 — LIGHT MODE DESIGN TOKENS
   ════════════════════════════════════════════════════════════ */

:root,
[data-bs-theme="light"] {

  /* ── Brand palette ── */
  --bs-primary:               #2455e8;
  --bs-primary-rgb:           36, 85, 232;
  --bs-secondary:             #0d1526;
  --bs-secondary-rgb:         13, 21, 38;
  --bs-success:               #059669;
  --bs-success-rgb:           5, 150, 105;
  --bs-warning:               #d97706;
  --bs-warning-rgb:           217, 119, 6;
  --bs-danger:                #dc2626;
  --bs-danger-rgb:            220, 38, 38;
  --bs-info:                  #0369a1;
  --bs-info-rgb:              3, 105, 161;
  --bs-light:                 #f8fafc;
  --bs-light-rgb:             248, 250, 252;
  --bs-dark:                  #0d1526;
  --bs-dark-rgb:              13, 21, 38;

  /* ── Typography ── */
  --bs-body-font-family:      system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --bs-font-monospace:        ui-monospace, "SFMono-Regular", Menlo, Monaco, Consolas, monospace;
  --bs-body-font-size:        0.9375rem;
  --bs-body-font-weight:      400;
  --bs-body-line-height:      1.6;
  --bs-headings-font-weight:  700;
  --bs-headings-line-height:  1.25;

  /* ── Body ── */
  --bs-body-bg:               #f4f6fb;
  --bs-body-bg-rgb:           244, 246, 251;
  --bs-body-color:            #0d1526;
  --bs-body-color-rgb:        13, 21, 38;

  /* ── Text hierarchy ── */
  --bs-emphasis-color:        #08101d;
  --bs-emphasis-color-rgb:    8, 16, 29;
  --bs-secondary-color:       #4a5568;
  --bs-secondary-color-rgb:   74, 85, 104;
  --bs-tertiary-color:        #718096;
  --bs-tertiary-color-rgb:    113, 128, 150;

  /* ── Surfaces ── */
  --bs-secondary-bg:          #edf0f7;
  --bs-secondary-bg-rgb:      237, 240, 247;
  --bs-tertiary-bg:           #ebeffd;
  --bs-tertiary-bg-rgb:       235, 239, 253;

  /* ── Links ── */
  --bs-link-color:            #2455e8;
  --bs-link-color-rgb:        36, 85, 232;
  --bs-link-hover-color:      #173fc0;
  --bs-link-hover-color-rgb:  23, 63, 192;
  --bs-link-decoration:       none;
  --bs-link-hover-decoration: underline;

  /* ── Borders ── */
  --bs-border-color:              #dde2ef;
  --bs-border-color-translucent:  rgba(13, 21, 38, 0.08);
  --bs-border-width:              1px;
  --bs-border-style:              solid;

  /* ── Border radii ── */
  --bs-border-radius-xs:      0.25rem;
  --bs-border-radius-sm:      0.5rem;
  --bs-border-radius:         0.75rem;
  --bs-border-radius-lg:      1rem;
  --bs-border-radius-xl:      1.25rem;
  --bs-border-radius-xxl:     1.5rem;
  --bs-border-radius-pill:    50rem;

  /* ── Shadows ── */
  --bs-box-shadow-xs:         0 1px 2px rgba(13, 21, 38, 0.05);
  --bs-box-shadow-sm:         0 1px 3px rgba(13, 21, 38, 0.06),
                              0 1px 2px rgba(13, 21, 38, 0.04);
  --bs-box-shadow:            0 4px 12px rgba(13, 21, 38, 0.08),
                              0 2px 4px rgba(13, 21, 38, 0.05);
  --bs-box-shadow-lg:         0 12px 32px rgba(13, 21, 38, 0.12),
                              0 4px 8px rgba(13, 21, 38, 0.07);
  --bs-box-shadow-xl:         0 24px 56px rgba(13, 21, 38, 0.14),
                              0 8px 16px rgba(13, 21, 38, 0.08);
  --bs-box-shadow-inset:      inset 0 1px 2px rgba(13, 21, 38, 0.06);

  /* ── Focus ring ── */
  --bs-focus-ring-width:      3px;
  --bs-focus-ring-opacity:    0.2;
  --bs-focus-ring-color:      rgba(36, 85, 232, 0.25);

  /* ── Cards ── */
  --bs-card-bg:               #ffffff;
  --bs-card-border-color:     var(--bs-border-color);
  --bs-card-border-radius:    var(--bs-border-radius-xl);
  --bs-card-box-shadow:       var(--bs-box-shadow-sm);
  --bs-card-cap-bg:           rgba(13, 21, 38, 0.02);
  --bs-card-cap-padding-y:    1rem;
  --bs-card-cap-padding-x:    1.25rem;
  --bs-card-color:            var(--bs-body-color);

  /* ── Buttons ── */
  --bs-btn-font-weight:       600;
  --bs-btn-font-size:         0.875rem;
  --bs-btn-border-radius:     var(--bs-border-radius-sm);
  --bs-btn-transition:        color 0.18s ease, background-color 0.18s ease,
                              border-color 0.18s ease, box-shadow 0.18s ease,
                              transform 0.18s ease;

  /* ── Forms ── */
  --bs-input-bg:                      #ffffff;
  --bs-input-border-color:            var(--bs-border-color);
  --bs-input-border-radius:           var(--bs-border-radius-sm);
  --bs-input-focus-border-color:      rgba(36, 85, 232, 0.5);
  --bs-input-focus-box-shadow:        0 0 0 3px rgba(36, 85, 232, 0.15);
  --bs-input-placeholder-color:       var(--bs-tertiary-color);
  --bs-input-disabled-bg:             var(--bs-secondary-bg);
  --bs-form-check-input-border:       1.5px solid var(--bs-border-color);

  /* ── Tables ── */
  --bs-table-bg:              transparent;
  --bs-table-striped-bg:      rgba(13, 21, 38, 0.02);
  --bs-table-hover-bg:        rgba(36, 85, 232, 0.04);
  --bs-table-border-color:    var(--bs-border-color);
  --bs-table-group-separator-color: var(--bs-border-color);

  /* ── Accordion ── */
  --bs-accordion-bg:          var(--bs-card-bg);
  --bs-accordion-border-color: var(--bs-border-color);
  --bs-accordion-border-radius: var(--bs-border-radius-lg);
  --bs-accordion-btn-color:   var(--bs-body-color);
  --bs-accordion-btn-bg:      var(--bs-card-bg);
  --bs-accordion-btn-icon:    url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234a5568'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232455e8'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  --bs-accordion-active-color: var(--bs-primary);
  --bs-accordion-active-bg:   var(--bs-tertiary-bg);
  --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(36, 85, 232, 0.15);

  /* ── Offcanvas ── */
  --bs-offcanvas-bg:          var(--bs-card-bg);
  --bs-offcanvas-border-color: var(--bs-border-color);
  --bs-offcanvas-box-shadow:  var(--bs-box-shadow-xl);
  --bs-offcanvas-color:       var(--bs-body-color);

  /* ── Modal ── */
  --bs-modal-bg:              var(--bs-card-bg);
  --bs-modal-border-color:    var(--bs-border-color);
  --bs-modal-border-radius:   var(--bs-border-radius-xl);
  --bs-modal-box-shadow:      var(--bs-box-shadow-xl);
  --bs-modal-header-border-color: var(--bs-border-color);
  --bs-modal-footer-border-color: var(--bs-border-color);
  --bs-modal-backdrop-bg:     rgba(8, 16, 29, 0.5);
  --bs-modal-backdrop-opacity: 1;

  /* ── Tooltip ── */
  --bs-tooltip-bg:            #0d1526;
  --bs-tooltip-color:         #fff;
  --bs-tooltip-border-radius: var(--bs-border-radius-sm);
  --bs-tooltip-font-size:     0.78rem;
  --bs-tooltip-opacity:       0.96;

  /* ── Popover ── */
  --bs-popover-bg:            var(--bs-card-bg);
  --bs-popover-border-color:  var(--bs-border-color);
  --bs-popover-border-radius: var(--bs-border-radius-lg);
  --bs-popover-box-shadow:    var(--bs-box-shadow-lg);
  --bs-popover-header-bg:     var(--bs-card-cap-bg);
  --bs-popover-header-color:  var(--bs-emphasis-color);
  --bs-popover-body-color:    var(--bs-body-color);
  --bs-popover-font-size:     0.875rem;

  /* ── Navbar ── */
  --bs-navbar-bg:             rgba(255, 255, 255, 0.92);
  --bs-navbar-border:         rgba(13, 21, 38, 0.08);
  --bs-navbar-color:          var(--bs-body-color);
  --bs-navbar-hover-color:    var(--bs-primary);
  --bs-navbar-active-color:   var(--bs-primary);
  --bs-navbar-toggler-border-radius: var(--bs-border-radius-sm);

  /* ── Dropdown ── */
  --bs-dropdown-bg:           var(--bs-card-bg);
  --bs-dropdown-border-color: var(--bs-border-color);
  --bs-dropdown-border-radius: var(--bs-border-radius-lg);
  --bs-dropdown-box-shadow:   var(--bs-box-shadow-lg);
  --bs-dropdown-link-color:   var(--bs-body-color);
  --bs-dropdown-link-hover-bg: var(--bs-tertiary-bg);
  --bs-dropdown-link-active-bg: var(--bs-primary);
  --bs-dropdown-item-border-radius: var(--bs-border-radius-sm);
  --bs-dropdown-divider-bg:   var(--bs-border-color);

  /* ── Pagination ── */
  --bs-pagination-bg:           var(--bs-card-bg);
  --bs-pagination-border-color: var(--bs-border-color);
  --bs-pagination-color:        var(--bs-secondary-color);
  --bs-pagination-hover-bg:     var(--bs-secondary-bg);
  --bs-pagination-hover-color:  var(--bs-primary);
  --bs-pagination-active-bg:    var(--bs-primary);
  --bs-pagination-active-color: #fff;
  --bs-pagination-active-border-color: var(--bs-primary);
  --bs-pagination-border-radius: var(--bs-border-radius-sm);

  /* ── Toast ── */
  --bs-toast-bg:              var(--bs-card-bg);
  --bs-toast-border-color:    var(--bs-border-color);
  --bs-toast-border-radius:   var(--bs-border-radius-lg);
  --bs-toast-box-shadow:      var(--bs-box-shadow-lg);
  --bs-toast-header-bg:       var(--bs-card-bg);
  --bs-toast-header-color:    var(--bs-emphasis-color);
  --bs-toast-color:           var(--bs-body-color);

  /* ── Placeholder / skeleton ── */
  --bs-placeholder-bg:        var(--bs-secondary-bg);
  --bs-placeholder-opacity-max: 0.6;
  --bs-placeholder-opacity-min: 0.1;

  /* ── Spinner ── */
  --bs-spinner-border-width:  0.2em;

  /* ── Progress ── */
  --bs-progress-bg:           var(--bs-secondary-bg);
  --bs-progress-height:       0.5rem;
  --bs-progress-bar-bg:       var(--bs-primary);
  --bs-progress-border-radius: var(--bs-border-radius-pill);

  /* ── List group ── */
  --bs-list-group-bg:         var(--bs-card-bg);
  --bs-list-group-border-color: var(--bs-border-color);
  --bs-list-group-action-hover-bg: var(--bs-secondary-bg);
  --bs-list-group-active-bg:  var(--bs-primary);
  --bs-list-group-active-border-color: var(--bs-primary);
  --bs-list-group-item-padding-y: 0.75rem;
  --bs-list-group-item-padding-x: 1rem;

  /* ── Alert ── */
  --bs-alert-border-radius:   var(--bs-border-radius-lg);
  --bs-alert-border-width:    1px;
  --bs-alert-padding-y:       1rem;
  --bs-alert-padding-x:       1.125rem;

  /* ── Badge ── */
  --bs-badge-font-size:       0.75em;
  --bs-badge-font-weight:     600;
  --bs-badge-padding-x:       0.55em;
  --bs-badge-padding-y:       0.3em;
  --bs-badge-border-radius:   var(--bs-border-radius-sm);

  /* ── Breadcrumb ── */
  --bs-breadcrumb-font-size:  0.875rem;
  --bs-breadcrumb-item-padding-x: 0.5rem;
  --bs-breadcrumb-divider-color: var(--bs-tertiary-color);

  /* ── App shell ── */
  --app-navbar-height:        64px;
  --app-sidebar-width:        260px;
  --app-sidebar-collapsed-width: 68px;
  --app-sidebar-bg:           #0d1526;
  --app-sidebar-border:       rgba(255, 255, 255, 0.06);
  --app-sidebar-color:        #c8d1e4;
  --app-sidebar-muted:        #8fa0c0;
  --app-sidebar-hover-bg:     rgba(255, 255, 255, 0.06);
  --app-sidebar-active-bg:    rgba(36, 85, 232, 0.18);
  --app-sidebar-active-indicator: var(--bs-primary);
  --app-content-bg:           var(--bs-body-bg);
  --app-topbar-bg:            rgba(255, 255, 255, 0.9);
  --app-topbar-border:        rgba(13, 21, 38, 0.08);
  --app-topbar-color:         var(--bs-body-color);

  /* ── Scrollbar ── */
  --scrollbar-thumb:          rgba(13, 21, 38, 0.18);
  --scrollbar-track:          transparent;

  /* ── Transition speeds ── */
  --transition-fast:          0.15s ease;
  --transition-base:          0.22s ease;
  --transition-slow:          0.35s ease;
}


/* ════════════════════════════════════════════════════════════
   § 2 — DARK MODE TOKENS
   ════════════════════════════════════════════════════════════ */

[data-bs-theme="dark"] {

  --bs-primary:               #4e7aff;
  --bs-primary-rgb:           78, 122, 255;
  --bs-secondary:             #dde2f0;
  --bs-secondary-rgb:         221, 226, 240;
  --bs-success:               #10b981;
  --bs-success-rgb:           16, 185, 129;
  --bs-warning:               #f59e0b;
  --bs-warning-rgb:           245, 158, 11;
  --bs-danger:                #ef4444;
  --bs-danger-rgb:            239, 68, 68;
  --bs-info:                  #38bdf8;
  --bs-info-rgb:              56, 189, 248;
  --bs-light:                 #1c2b46;
  --bs-light-rgb:             28, 43, 70;
  --bs-dark:                  #f0f4ff;
  --bs-dark-rgb:              240, 244, 255;

  --bs-body-bg:               #070c16;
  --bs-body-bg-rgb:           7, 12, 22;
  --bs-body-color:            #dde2f0;
  --bs-body-color-rgb:        221, 226, 240;

  --bs-emphasis-color:        #f8fbff;
  --bs-emphasis-color-rgb:    248, 251, 255;
  --bs-secondary-color:       #9aacc8;
  --bs-secondary-color-rgb:   154, 172, 200;
  --bs-tertiary-color:        #6a7e9e;
  --bs-tertiary-color-rgb:    106, 126, 158;

  --bs-secondary-bg:          #111a2e;
  --bs-secondary-bg-rgb:      17, 26, 46;
  --bs-tertiary-bg:           #0d1a40;
  --bs-tertiary-bg-rgb:       13, 26, 64;

  --bs-link-color:            #7ea0ff;
  --bs-link-color-rgb:        126, 160, 255;
  --bs-link-hover-color:      #a9beff;
  --bs-link-hover-color-rgb:  169, 190, 255;

  --bs-border-color:              #1c2b46;
  --bs-border-color-translucent:  rgba(255, 255, 255, 0.08);

  --bs-box-shadow-xs:         0 1px 2px rgba(0, 0, 0, 0.2);
  --bs-box-shadow-sm:         0 1px 4px rgba(0, 0, 0, 0.28),
                              0 1px 2px rgba(0, 0, 0, 0.18);
  --bs-box-shadow:            0 4px 14px rgba(0, 0, 0, 0.32),
                              0 2px 4px rgba(0, 0, 0, 0.2);
  --bs-box-shadow-lg:         0 12px 36px rgba(0, 0, 0, 0.42),
                              0 4px 10px rgba(0, 0, 0, 0.28);
  --bs-box-shadow-xl:         0 24px 60px rgba(0, 0, 0, 0.55),
                              0 8px 18px rgba(0, 0, 0, 0.32);
  --bs-box-shadow-inset:      inset 0 1px 2px rgba(0, 0, 0, 0.3);

  --bs-focus-ring-color:      rgba(78, 122, 255, 0.3);

  --bs-card-bg:               #0e1628;
  --bs-card-border-color:     var(--bs-border-color);
  --bs-card-cap-bg:           rgba(255, 255, 255, 0.03);

  --bs-input-bg:              #111a2e;
  --bs-input-border-color:    #1c2b46;
  --bs-input-focus-border-color: rgba(78, 122, 255, 0.5);
  --bs-input-focus-box-shadow: 0 0 0 3px rgba(78, 122, 255, 0.2);
  --bs-input-disabled-bg:     rgba(17, 26, 46, 0.6);
  --bs-form-check-input-border: 1.5px solid #1c2b46;

  --bs-table-striped-bg:      rgba(255, 255, 255, 0.03);
  --bs-table-hover-bg:        rgba(78, 122, 255, 0.06);
  --bs-table-border-color:    var(--bs-border-color);

  --bs-accordion-bg:          var(--bs-card-bg);
  --bs-accordion-border-color: var(--bs-border-color);
  --bs-accordion-btn-color:   var(--bs-body-color);
  --bs-accordion-btn-bg:      var(--bs-card-bg);
  --bs-accordion-btn-icon:    url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%239aacc8'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234e7aff'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  --bs-accordion-active-color: var(--bs-primary);
  --bs-accordion-active-bg:   rgba(78, 122, 255, 0.08);

  --bs-offcanvas-bg:          #0e1628;
  --bs-offcanvas-border-color: var(--bs-border-color);

  --bs-modal-bg:              #0e1628;
  --bs-modal-border-color:    var(--bs-border-color);
  --bs-modal-backdrop-bg:     rgba(0, 0, 0, 0.7);

  --bs-tooltip-bg:            #1c2b46;
  --bs-popover-bg:            #0e1628;
  --bs-popover-border-color:  var(--bs-border-color);
  --bs-popover-header-bg:     rgba(255, 255, 255, 0.04);

  --bs-navbar-bg:             rgba(7, 12, 22, 0.92);
  --bs-navbar-border:         rgba(255, 255, 255, 0.07);

  --bs-dropdown-bg:           #0e1628;
  --bs-dropdown-border-color: var(--bs-border-color);
  --bs-dropdown-link-hover-bg: rgba(255, 255, 255, 0.05);

  --bs-toast-bg:              #0e1628;
  --bs-toast-border-color:    var(--bs-border-color);
  --bs-toast-header-bg:       rgba(255, 255, 255, 0.03);

  --bs-placeholder-bg:        rgba(255, 255, 255, 0.08);

  --bs-progress-bg:           var(--bs-secondary-bg);

  --bs-list-group-bg:         var(--bs-card-bg);
  --bs-list-group-border-color: var(--bs-border-color);
  --bs-list-group-action-hover-bg: rgba(255, 255, 255, 0.04);

  --app-sidebar-bg:           #08101d;
  --app-sidebar-border:       rgba(255, 255, 255, 0.05);
  --app-sidebar-color:        #d7e0f3;
  --app-sidebar-hover-bg:     rgba(255, 255, 255, 0.06);
  --app-sidebar-active-bg:    rgba(78, 122, 255, 0.22);
  --app-topbar-bg:            rgba(7, 12, 22, 0.9);
  --app-topbar-border:        rgba(255, 255, 255, 0.07);
  --app-topbar-color:         var(--bs-body-color);

  --scrollbar-thumb:          rgba(255, 255, 255, 0.1);
}


/* ════════════════════════════════════════════════════════════
   § 3 — BASE & GLOBAL
   ════════════════════════════════════════════════════════════ */

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

html, body { height: 100%; }

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

a {
  color: var(--bs-link-color);
  text-decoration: var(--bs-link-decoration);
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--bs-link-hover-color);
  text-decoration: var(--bs-link-hover-decoration);
}

/* Global scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(36, 85, 232, 0.35); }

/* Selection */
::selection { background: rgba(36, 85, 232, 0.2); color: var(--bs-emphasis-color); }

/* Focus ring */
:focus-visible {
  outline: none;
  box-shadow: 0 0 0 var(--bs-focus-ring-width) var(--bs-focus-ring-color);
}

code, pre, kbd, samp {
  font-family: var(--bs-font-monospace);
  font-size: 0.875em;
}

kbd {
  background: var(--bs-secondary-bg);
  color: var(--bs-body-color);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-xs);
  padding: 0.15em 0.45em;
  font-size: 0.78em;
  font-weight: 600;
  box-shadow: 0 1px 1px rgba(13,21,38,.1), inset 0 -1px 0 rgba(13,21,38,.08);
}

pre {
  background: var(--bs-secondary-bg);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.65;
}

blockquote {
  border-left: 3px solid var(--bs-primary);
  padding: 0.5rem 0 0.5rem 1.25rem;
  color: var(--bs-secondary-color);
  margin: 0 0 1rem;
}

mark {
  background: rgba(var(--bs-warning-rgb), 0.22);
  color: var(--bs-body-color);
  border-radius: 2px;
  padding: 0.1em 0.25em;
}

hr {
  border: none;
  border-top: 1px solid var(--bs-border-color);
  opacity: 1;
}


/* ════════════════════════════════════════════════════════════
   § 4 — APP SHELL LAYOUT
   ════════════════════════════════════════════════════════════ */

.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-topbar {
  position: sticky;
  top: 0;
  z-index: 1030;
  height: var(--app-navbar-height);
  display: flex;
  align-items: center;
  background: var(--app-topbar-bg);
  border-bottom: 1px solid var(--app-topbar-border);
  color: var(--app-topbar-color);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--bs-box-shadow-sm);
  flex-shrink: 0;
  padding: 0 1.25rem;
  gap: 1rem;
}

.app-topbar-brand {
  font-weight: 700;
  font-size: 1rem;
  color: var(--bs-emphasis-color);
  text-decoration: none;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.app-topbar-brand:hover { color: var(--bs-primary); }

.app-topbar-search {
  flex: 1;
  max-width: 340px;
}

.app-topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.app-body {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
}

/* ── Sidebar ── */
.app-sidebar {
  width: var(--app-sidebar-width);
  flex-shrink: 0;
  background: var(--app-sidebar-bg);
  border-right: 1px solid var(--app-sidebar-border);
  color: var(--app-sidebar-color);
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - var(--app-navbar-height));
  overflow-y: auto;
  overflow-x: hidden;
  transition: width var(--transition-slow);
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,.08) transparent;
}

.app-sidebar::-webkit-scrollbar { width: 4px; }
.app-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); border-radius: 2px; }

.app-sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.125rem 1rem;
  border-bottom: 1px solid var(--app-sidebar-border);
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  font-size: 0.9375rem;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.app-sidebar-logo:hover { opacity: 0.85; color: #fff; }

.app-sidebar-logo-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 0.6rem;
  background: var(--bs-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #fff;
}

.app-sidebar-nav {
  flex: 1;
  padding: 0.75rem 0.625rem;
  overflow-y: auto;
  overflow-x: hidden;
}

.app-sidebar-footer {
  padding: 0.75rem 0.625rem;
  border-top: 1px solid var(--app-sidebar-border);
  flex-shrink: 0;
}

/* ── Sidebar nav items ── */
.app-sidebar .nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.875rem;
  color: var(--app-sidebar-color);
  border-radius: var(--bs-border-radius);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.4;
  transition: background var(--transition-fast), color var(--transition-fast);
  position: relative;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-decoration: none;
}

.app-sidebar .nav-link:hover { background: var(--app-sidebar-hover-bg); color: #fff; }

.app-sidebar .nav-link.active {
  background: var(--app-sidebar-active-bg);
  color: #fff;
  font-weight: 600;
}

.app-sidebar .nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 55%;
  border-radius: 0 2px 2px 0;
  background: var(--app-sidebar-active-indicator);
}

.app-sidebar .nav-icon {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  opacity: 0.72;
}

.app-sidebar .nav-link:hover .nav-icon,
.app-sidebar .nav-link.active .nav-icon { opacity: 1; }

.app-sidebar .nav-badge {
  margin-left: auto;
  font-size: 0.7rem;
  padding: 0.18em 0.5em;
  border-radius: var(--bs-border-radius-pill);
  background: rgba(var(--bs-primary-rgb), 0.25);
  color: #a9beff;
  font-weight: 700;
  line-height: 1.4;
}

.nav-section-label {
  color: var(--app-sidebar-muted);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0 0.875rem;
  margin: 1rem 0 0.25rem;
  display: block;
}

.nav-section-label:first-child { margin-top: 0.25rem; }

.nav-divider {
  border-color: var(--app-sidebar-border);
  margin: 0.5rem 0;
  opacity: 1;
}

/* ── Content area ── */
.app-content {
  flex: 1 1 auto;
  min-width: 0;
  background: var(--app-content-bg);
  overflow-y: auto;
}

.app-page {
  padding: 1.75rem 2rem;
  max-width: 1400px;
}

.app-page-header {
  margin-bottom: 1.75rem;
}

.app-page-title {
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--bs-emphasis-color);
  margin-bottom: 0.25rem;
}

.app-page-subtitle {
  font-size: 0.875rem;
  color: var(--bs-tertiary-color);
}

/* ── App footer ── */
.app-footer {
  margin-top: auto;
  border-top: 1px solid var(--bs-border-color);
  background: var(--bs-card-bg);
}

.app-footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.95rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.app-footer-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.app-footer,
.app-footer a {
  color: var(--bs-secondary-color);
}

.app-footer a:hover {
  color: var(--bs-primary);
}

@media (max-width: 767.98px) {
  .app-footer-inner {
    padding: 0.9rem 1rem;
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ════════════════════════════════════════════════════════════
   § 5 — BOOTSTRAP COMPONENT OVERRIDES
   ════════════════════════════════════════════════════════════ */

/* ── Accordion ── */
.accordion {
  --bs-accordion-bg: var(--bs-accordion-bg);
  --bs-accordion-border-color: var(--bs-accordion-border-color);
  --bs-accordion-border-radius: var(--bs-accordion-border-radius);
  --bs-accordion-btn-color: var(--bs-accordion-btn-color);
  --bs-accordion-active-color: var(--bs-accordion-active-color);
  --bs-accordion-active-bg: var(--bs-accordion-active-bg);
  border-radius: var(--bs-accordion-border-radius);
  overflow: hidden;
}

.accordion-button {
  font-weight: 600;
  font-size: 0.9375rem;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.accordion-button:not(.collapsed) {
  box-shadow: none;
  border-bottom: 1px solid var(--bs-border-color);
}

.accordion-button:focus { box-shadow: var(--bs-accordion-btn-focus-box-shadow); }

.accordion-item {
  border-color: var(--bs-border-color);
}

.accordion-item + .accordion-item { border-top: 1px solid var(--bs-border-color); }

.accordion-body { font-size: 0.9375rem; color: var(--bs-secondary-color); }

/* ── Alerts ── */
.alert {
  border-radius: var(--bs-alert-border-radius);
  border-width: var(--bs-alert-border-width);
  padding: var(--bs-alert-padding-y) var(--bs-alert-padding-x);
  font-size: 0.9rem;
  display: flex;
  gap: 0.75rem;
}

.alert-icon {
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
  margin-top: 0.1rem;
}

.alert-dismissible .btn-close { top: 50%; transform: translateY(-50%); }

/* ── Badges ── */
.badge {
  font-size: var(--bs-badge-font-size);
  font-weight: var(--bs-badge-font-weight);
  padding: var(--bs-badge-padding-y) var(--bs-badge-padding-x);
  border-radius: var(--bs-badge-border-radius);
  letter-spacing: 0.02em;
}

/* ── Breadcrumb ── */
.breadcrumb {
  font-size: var(--bs-breadcrumb-font-size);
  margin-bottom: 0;
  align-items: center;
}

.breadcrumb-item + .breadcrumb-item { padding-left: var(--bs-breadcrumb-item-padding-x); }
.breadcrumb-item + .breadcrumb-item::before { color: var(--bs-breadcrumb-divider-color); padding-right: var(--bs-breadcrumb-item-padding-x); }
.breadcrumb-item a { color: var(--bs-secondary-color); transition: color var(--transition-fast); }
.breadcrumb-item a:hover { color: var(--bs-primary); text-decoration: none; }
.breadcrumb-item.active { color: var(--bs-body-color); font-weight: 500; }

/* ── Button groups ── */
.btn-group > .btn {
  font-weight: 500;
}

.btn-group-sm > .btn {
  font-size: 0.8125rem;
}

/* ── Buttons ── */
.btn {
  font-weight: var(--bs-btn-font-weight);
  font-size: var(--bs-btn-font-size);
  border-radius: var(--bs-btn-border-radius);
  transition: var(--bs-btn-transition);
  letter-spacing: 0.01em;
  line-height: 1.5;
}

.btn:not(:disabled):active { transform: translateY(1px); }

.btn-primary { box-shadow: 0 2px 8px rgba(var(--bs-primary-rgb), 0.3); }
.btn-primary:hover { box-shadow: 0 4px 14px rgba(var(--bs-primary-rgb), 0.38); transform: translateY(-1px); }
.btn-primary:active { box-shadow: none; transform: translateY(1px); }

.btn-success { box-shadow: 0 2px 8px rgba(var(--bs-success-rgb), 0.22); }
.btn-success:hover { box-shadow: 0 4px 14px rgba(var(--bs-success-rgb), 0.32); transform: translateY(-1px); }

.btn-danger  { box-shadow: 0 2px 8px rgba(var(--bs-danger-rgb), 0.22); }
.btn-danger:hover  { box-shadow: 0 4px 14px rgba(var(--bs-danger-rgb), 0.32); transform: translateY(-1px); }

.btn-sm  { border-radius: var(--bs-border-radius-xs); font-size: 0.8125rem; }
.btn-lg  { border-radius: var(--bs-border-radius); font-size: 1rem; }

.btn-icon {
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--bs-border-radius-sm);
  flex-shrink: 0;
}

.btn-icon-sm { width: 1.875rem; height: 1.875rem; }
.btn-icon-lg { width: 2.75rem; height: 2.75rem; }

/* ── Cards ── */
.card {
  background-color: var(--bs-card-bg);
  border-color: var(--bs-card-border-color);
  border-radius: var(--bs-card-border-radius);
  box-shadow: var(--bs-card-box-shadow);
  color: var(--bs-card-color);
}

.card-header, .card-footer { border-color: var(--bs-border-color); }
.card-header { padding: var(--bs-card-cap-padding-y) var(--bs-card-cap-padding-x); }
.card-footer { padding: var(--bs-card-cap-padding-y) var(--bs-card-cap-padding-x); }
.card-img-top { border-radius: var(--bs-card-border-radius) var(--bs-card-border-radius) 0 0; }
.card-img-bottom { border-radius: 0 0 var(--bs-card-border-radius) var(--bs-card-border-radius); }

/* ── Close button ── */
.btn-close {
  opacity: 0.45;
  transition: opacity var(--transition-fast);
  border-radius: var(--bs-border-radius-xs);
}

.btn-close:hover { opacity: 0.75; }
.btn-close:focus { opacity: 0.75; box-shadow: 0 0 0 var(--bs-focus-ring-width) var(--bs-focus-ring-color); }

[data-bs-theme="dark"] .btn-close {
  filter: invert(1) grayscale(1);
}

/* ── Dropdowns ── */
.dropdown-menu {
  background-color: var(--bs-dropdown-bg);
  border-color: var(--bs-dropdown-border-color);
  border-radius: var(--bs-dropdown-border-radius);
  box-shadow: var(--bs-dropdown-box-shadow);
  padding: 0.375rem;
  font-size: 0.875rem;
  min-width: 11rem;
}

.dropdown-item {
  border-radius: var(--bs-dropdown-item-border-radius);
  padding: 0.5rem 0.75rem;
  color: var(--bs-dropdown-link-color);
  transition: background var(--transition-fast), color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.dropdown-item:hover { background: var(--bs-dropdown-link-hover-bg); color: var(--bs-body-color); }
.dropdown-item.active, .dropdown-item:active { background: var(--bs-primary); color: #fff; }
.dropdown-item:disabled, .dropdown-item.disabled { color: var(--bs-tertiary-color); pointer-events: none; }

.dropdown-divider { border-color: var(--bs-dropdown-divider-bg); margin: 0.375rem 0; opacity: 1; }

.dropdown-header {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bs-tertiary-color);
  padding: 0.5rem 0.75rem 0.25rem;
}

/* ── Forms — base ── */
.form-control, .form-select {
  background-color: var(--bs-input-bg);
  border-color: var(--bs-input-border-color);
  border-radius: var(--bs-input-border-radius);
  color: var(--bs-body-color);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  font-size: 0.9rem;
}

.form-control::placeholder { color: var(--bs-input-placeholder-color); }
.form-select { background-color: var(--bs-input-bg); }

.form-control:focus, .form-select:focus {
  background-color: var(--bs-input-bg);
  border-color: var(--bs-input-focus-border-color);
  box-shadow: var(--bs-input-focus-box-shadow);
  color: var(--bs-body-color);
}

.form-control:disabled, .form-control[readonly],
.form-select:disabled {
  background-color: var(--bs-input-disabled-bg);
  color: var(--bs-tertiary-color);
  cursor: not-allowed;
  opacity: 0.7;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--bs-emphasis-color);
  margin-bottom: 0.375rem;
}

.form-text { color: var(--bs-tertiary-color); font-size: 0.8rem; }

/* Form checks, radios, switches */
.form-check-input {
  border: var(--bs-form-check-input-border);
  background-color: var(--bs-input-bg);
  transition: border-color var(--transition-fast), background-color var(--transition-fast),
              box-shadow var(--transition-fast);
  cursor: pointer;
}

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

.form-check-input:focus {
  box-shadow: 0 0 0 var(--bs-focus-ring-width) var(--bs-focus-ring-color);
  border-color: var(--bs-input-focus-border-color);
}

.form-check-input[type="checkbox"] { border-radius: var(--bs-border-radius-xs); }
.form-check-label { font-size: 0.9rem; cursor: pointer; }

.form-switch .form-check-input {
  height: 1.125rem;
  width: 2rem;
  margin-top: 0.2rem;
  background-size: auto 70%;
}

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

/* Range */
.form-range::-webkit-slider-thumb {
  background: var(--bs-primary);
  box-shadow: 0 1px 4px rgba(var(--bs-primary-rgb), 0.4);
}

.form-range::-moz-range-thumb {
  background: var(--bs-primary);
  border: none;
  box-shadow: 0 1px 4px rgba(var(--bs-primary-rgb), 0.4);
}

.form-range::-webkit-slider-runnable-track { background: var(--bs-secondary-bg); border-radius: var(--bs-border-radius-pill); }
.form-range::-moz-range-track { background: var(--bs-secondary-bg); border-radius: var(--bs-border-radius-pill); }

/* File input */
.form-control[type="file"] { padding: 0.4rem 0.75rem; cursor: pointer; }
.form-control[type="file"]::file-selector-button {
  background: var(--bs-secondary-bg);
  border: 0;
  border-right: 1px solid var(--bs-border-color);
  padding: 0.4rem 0.75rem;
  margin-right: 0.75rem;
  margin-left: -0.75rem;
  border-radius: var(--bs-input-border-radius) 0 0 var(--bs-input-border-radius);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--bs-secondary-color);
  transition: background var(--transition-fast), color var(--transition-fast);
  cursor: pointer;
}
.form-control[type="file"]::file-selector-button:hover { background: var(--bs-tertiary-bg); color: var(--bs-primary); }

/* Floating labels */
.form-floating > .form-control,
.form-floating > .form-select { border-radius: var(--bs-input-border-radius); }

.form-floating > label {
  color: var(--bs-input-placeholder-color);
  font-size: 0.9rem;
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.form-floating > .form-select ~ label {
  color: var(--bs-primary);
  font-size: 0.78rem;
  font-weight: 600;
}

/* Input groups */
.input-group-text {
  background-color: var(--bs-secondary-bg);
  border-color: var(--bs-border-color);
  color: var(--bs-secondary-color);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast);
}

.input-group:focus-within .input-group-text {
  border-color: var(--bs-input-focus-border-color);
  color: var(--bs-primary);
}

/* Validation */
.form-control.is-valid, .form-select.is-valid {
  border-color: var(--bs-success);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23059669' d='M2.3 6.73.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
}

.form-control.is-valid:focus, .form-select.is-valid:focus { box-shadow: 0 0 0 3px rgba(var(--bs-success-rgb), 0.18); }

.form-control.is-invalid, .form-select.is-invalid { border-color: var(--bs-danger); }
.form-control.is-invalid:focus, .form-select.is-invalid:focus { box-shadow: 0 0 0 3px rgba(var(--bs-danger-rgb), 0.18); }

.valid-feedback   { font-size: 0.8rem; color: var(--bs-success); }
.invalid-feedback { font-size: 0.8rem; color: var(--bs-danger); }

/* ── List groups ── */
.list-group {
  border-radius: var(--bs-border-radius-lg);
  overflow: hidden;
}

.list-group-item {
  background-color: var(--bs-list-group-bg);
  border-color: var(--bs-list-group-border-color);
  color: var(--bs-body-color);
  padding: var(--bs-list-group-item-padding-y) var(--bs-list-group-item-padding-x);
  transition: background var(--transition-fast), color var(--transition-fast);
  font-size: 0.9rem;
}

.list-group-item.active {
  background-color: var(--bs-list-group-active-bg);
  border-color: var(--bs-list-group-active-border-color);
  color: #fff;
}

.list-group-item-action:hover { background-color: var(--bs-list-group-action-hover-bg); color: var(--bs-body-color); }

/* ── Modals ── */
.modal-content {
  background-color: var(--bs-modal-bg);
  border-color: var(--bs-modal-border-color);
  border-radius: var(--bs-modal-border-radius);
  box-shadow: var(--bs-modal-box-shadow);
}

.modal-header, .modal-footer { border-color: var(--bs-modal-header-border-color); }
.modal-header { padding: 1.25rem 1.5rem; }
.modal-footer { padding: 1rem 1.5rem; gap: 0.5rem; }
.modal-body { padding: 1.5rem; }
.modal-title { font-size: 1.0625rem; font-weight: 700; color: var(--bs-emphasis-color); }

.modal-backdrop { background-color: var(--bs-modal-backdrop-bg); }
.modal-backdrop.show { opacity: 1; }

/* ── Nav tabs ── */
.nav-tabs {
  border-bottom-color: var(--bs-border-color);
  gap: 0.125rem;
}

.nav-tabs .nav-link {
  border-radius: var(--bs-border-radius-sm) var(--bs-border-radius-sm) 0 0;
  color: var(--bs-tertiary-color);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition-fast), background var(--transition-fast);
  border: 1px solid transparent;
}

.nav-tabs .nav-link:hover { color: var(--bs-body-color); border-color: var(--bs-border-color) var(--bs-border-color) transparent; background: transparent; }
.nav-tabs .nav-link.active { color: var(--bs-primary); font-weight: 600; border-color: var(--bs-border-color) var(--bs-border-color) var(--bs-card-bg); background: var(--bs-card-bg); }

/* ── Nav pills ── */
.nav-pills .nav-link {
  border-radius: var(--bs-border-radius-sm);
  color: var(--bs-secondary-color);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-pills .nav-link:hover { color: var(--bs-body-color); background: var(--bs-secondary-bg); }
.nav-pills .nav-link.active { background: var(--bs-primary); color: #fff; box-shadow: 0 2px 8px rgba(var(--bs-primary-rgb), 0.28); }

/* ── Navbar (standalone, not app-topbar) ── */
.navbar {
  padding: 0.75rem 0;
}

.navbar-light .navbar-brand, .navbar .navbar-brand {
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--bs-emphasis-color);
}

.navbar-light .navbar-nav .nav-link, .navbar .navbar-nav .nav-link {
  color: var(--bs-secondary-color);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: 0.5rem 0.75rem;
  border-radius: var(--bs-border-radius-sm);
}

.navbar-light .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link:hover { color: var(--bs-primary); background: var(--bs-tertiary-bg); }
.navbar-light .navbar-nav .nav-link.active,
.navbar .navbar-nav .nav-link.active { color: var(--bs-primary); font-weight: 600; }

.navbar-toggler {
  border-radius: var(--bs-navbar-toggler-border-radius);
  border-color: var(--bs-border-color);
  padding: 0.375rem 0.625rem;
}

/* ── Offcanvas ── */
.offcanvas {
  background-color: var(--bs-offcanvas-bg);
  border-color: var(--bs-offcanvas-border-color);
  color: var(--bs-offcanvas-color);
  box-shadow: var(--bs-offcanvas-box-shadow);
}

.offcanvas-header {
  border-bottom: 1px solid var(--bs-border-color);
  padding: 1.25rem 1.5rem;
}

.offcanvas-title { font-size: 1rem; font-weight: 700; color: var(--bs-emphasis-color); }
.offcanvas-body { padding: 1.25rem 1.5rem; }

/* ── Pagination ── */
.page-link {
  background-color: var(--bs-pagination-bg);
  border-color: var(--bs-pagination-border-color);
  color: var(--bs-pagination-color);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--bs-pagination-border-radius) !important;
  transition: all var(--transition-fast);
  margin: 0 1px;
}

.page-link:hover {
  background: var(--bs-pagination-hover-bg);
  border-color: var(--bs-border-color);
  color: var(--bs-pagination-hover-color);
  transform: none;
}

.page-item.active .page-link {
  background-color: var(--bs-pagination-active-bg);
  border-color: var(--bs-pagination-active-border-color);
  color: var(--bs-pagination-active-color);
  box-shadow: 0 2px 8px rgba(var(--bs-primary-rgb), 0.28);
}

.page-item.disabled .page-link { opacity: 0.5; }

/* ── Placeholders / skeleton ── */
.placeholder {
  background-color: var(--bs-placeholder-bg);
  border-radius: var(--bs-border-radius-xs);
  opacity: 1;
}

.placeholder-glow .placeholder {
  animation: placeholder-glow 1.8s ease-in-out infinite;
}

@keyframes placeholder-glow {
  0%, 100% { opacity: var(--bs-placeholder-opacity-min); }
  50% { opacity: var(--bs-placeholder-opacity-max); }
}

.placeholder-wave .placeholder {
  mask-image: linear-gradient(130deg, #000 55%, rgba(0,0,0,0.4) 75%, #000 95%);
  mask-size: 200% 100%;
  animation: placeholder-wave 1.5s linear infinite;
}

@keyframes placeholder-wave {
  from { mask-position: 200% 0; }
  to   { mask-position: -200% 0; }
}

/* ── Popovers ── */
.popover {
  background-color: var(--bs-popover-bg);
  border-color: var(--bs-popover-border-color);
  border-radius: var(--bs-popover-border-radius);
  box-shadow: var(--bs-popover-box-shadow);
  font-size: var(--bs-popover-font-size);
  color: var(--bs-popover-body-color);
}

.popover-header {
  background-color: var(--bs-popover-header-bg);
  border-color: var(--bs-border-color);
  color: var(--bs-popover-header-color);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--bs-popover-border-radius) var(--bs-popover-border-radius) 0 0;
}

.popover-body { padding: 0.875rem 1rem; }

/* ── Progress ── */
.progress {
  background-color: var(--bs-progress-bg);
  border-radius: var(--bs-progress-border-radius);
  height: var(--bs-progress-height);
  overflow: hidden;
  box-shadow: var(--bs-box-shadow-inset);
}

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

.progress-sm  { height: 0.3rem; }
.progress-md  { height: 0.75rem; }
.progress-lg  { height: 1rem; }

/* ── Spinners ── */
.spinner-border {
  border-width: var(--bs-spinner-border-width);
  color: var(--bs-primary);
}

.spinner-grow { color: var(--bs-primary); }

/* ── Tables ── */
.table {
  --bs-table-bg: var(--bs-table-bg);
  --bs-table-striped-bg: var(--bs-table-striped-bg);
  --bs-table-hover-bg: var(--bs-table-hover-bg);
  --bs-table-border-color: var(--bs-table-border-color);
  color: var(--bs-body-color);
  vertical-align: middle;
  font-size: 0.9rem;
}

.table thead th {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--bs-secondary-color);
  border-bottom: 1px solid var(--bs-border-color);
  padding-bottom: 0.75rem;
  white-space: nowrap;
  background: var(--bs-secondary-bg);
}

.table thead th:first-child { border-radius: var(--bs-border-radius-sm) 0 0 0; }
.table thead th:last-child  { border-radius: 0 var(--bs-border-radius-sm) 0 0; }

.table tbody tr { transition: background var(--transition-fast); }
.table tbody tr:last-child td { border-bottom: 0; }

.table td { vertical-align: middle; }
.table-bordered { border-color: var(--bs-border-color); }
.table-hover tbody tr:hover { --bs-table-hover-bg: var(--bs-table-hover-bg); }

/* ── Toasts ── */
.toast {
  background-color: var(--bs-toast-bg);
  border-color: var(--bs-toast-border-color);
  border-radius: var(--bs-toast-border-radius);
  box-shadow: var(--bs-toast-box-shadow);
  color: var(--bs-toast-color);
  min-width: 300px;
  max-width: 380px;
}

.toast-header {
  background-color: var(--bs-toast-header-bg);
  border-color: var(--bs-border-color);
  color: var(--bs-toast-header-color);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.75rem 1rem;
}

.toast-body { padding: 0.875rem 1rem; font-size: 0.9rem; }

.toast-container {
  z-index: 1090;
}

/* ── Tooltips ── */
.tooltip .tooltip-inner {
  background-color: var(--bs-tooltip-bg);
  border-radius: var(--bs-tooltip-border-radius);
  font-size: var(--bs-tooltip-font-size);
  font-weight: 500;
  padding: 0.35em 0.65em;
  max-width: 220px;
  box-shadow: var(--bs-box-shadow-sm);
}

.tooltip.bs-tooltip-top .tooltip-arrow::before,
.tooltip.bs-tooltip-auto[data-popper-placement^=top] .tooltip-arrow::before  { border-top-color: var(--bs-tooltip-bg); }
.tooltip.bs-tooltip-bottom .tooltip-arrow::before,
.tooltip.bs-tooltip-auto[data-popper-placement^=bottom] .tooltip-arrow::before { border-bottom-color: var(--bs-tooltip-bg); }
.tooltip.bs-tooltip-start .tooltip-arrow::before,
.tooltip.bs-tooltip-auto[data-popper-placement^=left] .tooltip-arrow::before  { border-left-color: var(--bs-tooltip-bg); }
.tooltip.bs-tooltip-end .tooltip-arrow::before,
.tooltip.bs-tooltip-auto[data-popper-placement^=right] .tooltip-arrow::before { border-right-color: var(--bs-tooltip-bg); }


/* ════════════════════════════════════════════════════════════
   § 6 — CUSTOM COMPONENT LIBRARY
   ════════════════════════════════════════════════════════════ */

/* ── Surface & KPI cards ── */
.surface-card {
  background: var(--bs-card-bg);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-xl);
  box-shadow: var(--bs-box-shadow-sm);
}

.kpi-card {
  background: var(--bs-card-bg);
  border: 1px solid var(--bs-border-color);
  border-radius: var(--bs-border-radius-xl);
  box-shadow: var(--bs-box-shadow-sm);
  padding: 1.375rem 1.5rem;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.kpi-card:hover { box-shadow: var(--bs-box-shadow); transform: translateY(-2px); }

/* ── Icon containers ── */
.kpi-icon {
  width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: var(--bs-border-radius);
  background: rgba(var(--bs-primary-rgb), 0.1);
  color: var(--bs-primary);
}

.kpi-icon-sm { width: 2rem; height: 2rem; border-radius: var(--bs-border-radius-sm); }
.kpi-icon-lg { width: 3.5rem; height: 3.5rem; border-radius: var(--bs-border-radius-lg); }

.kpi-icon-primary { background: rgba(var(--bs-primary-rgb), 0.1);  color: var(--bs-primary); }
.kpi-icon-success { background: rgba(var(--bs-success-rgb), 0.1);  color: var(--bs-success); }
.kpi-icon-warning { background: rgba(var(--bs-warning-rgb), 0.12); color: var(--bs-warning); }
.kpi-icon-danger  { background: rgba(var(--bs-danger-rgb), 0.1);   color: var(--bs-danger); }
.kpi-icon-info    { background: rgba(var(--bs-info-rgb), 0.1);     color: var(--bs-info); }

/* ── Avatars ── */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: 700;
  border-radius: 50%;
  background: rgba(var(--bs-primary-rgb), 0.12);
  color: var(--bs-primary);
  font-size: 0.75rem;
  overflow: hidden;
  width: 2.25rem;
  height: 2.25rem;
}

.avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.avatar-sm  { width: 1.75rem; height: 1.75rem; font-size: 0.65rem; }
.avatar-lg  { width: 3rem;    height: 3rem;    font-size: 1rem; }
.avatar-xl  { width: 4rem;    height: 4rem;    font-size: 1.375rem; }

.avatar-primary { background: rgba(var(--bs-primary-rgb), 0.12); color: var(--bs-primary); }
.avatar-success { background: rgba(var(--bs-success-rgb), 0.12); color: var(--bs-success); }
.avatar-warning { background: rgba(var(--bs-warning-rgb), 0.14); color: var(--bs-warning); }
.avatar-danger  { background: rgba(var(--bs-danger-rgb),  0.12); color: var(--bs-danger); }
.avatar-info    { background: rgba(var(--bs-info-rgb),    0.12); color: var(--bs-info); }

.avatar-group { display: flex; }
.avatar-group .avatar {
  border: 2px solid var(--bs-card-bg);
  margin-left: -0.625rem;
  transition: transform var(--transition-fast), z-index 0s;
}
.avatar-group .avatar:first-child { margin-left: 0; }
.avatar-group .avatar:hover { transform: translateY(-2px); z-index: 1; }

/* ── Status dots ── */
.status-dot {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-dot-online  { background: var(--bs-success); box-shadow: 0 0 0 2px rgba(var(--bs-success-rgb), 0.25); }
.status-dot-away    { background: var(--bs-warning); box-shadow: 0 0 0 2px rgba(var(--bs-warning-rgb), 0.25); }
.status-dot-busy    { background: var(--bs-danger);  box-shadow: 0 0 0 2px rgba(var(--bs-danger-rgb), 0.25); }
.status-dot-offline { background: var(--bs-tertiary-color); }

.status-dot-pulse {
  animation: pulse-ring 1.6s ease-in-out infinite;
}

@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(var(--bs-success-rgb), 0.5); }
  70%  { box-shadow: 0 0 0 5px rgba(var(--bs-success-rgb), 0); }
  100% { box-shadow: 0 0 0 0 rgba(var(--bs-success-rgb), 0); }
}

/* ── Timeline ── */
.timeline { position: relative; }

.timeline::before {
  content: '';
  position: absolute;
  left: 1.0625rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 1.5px;
  background: var(--bs-border-color);
}

.timeline-item {
  display: flex;
  gap: 1rem;
  padding-bottom: 1.5rem;
  position: relative;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  flex-shrink: 0;
  width: 2.125rem;
  height: 2.125rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bs-card-bg);
  border: 2px solid var(--bs-border-color);
  z-index: 1;
  color: var(--bs-tertiary-color);
  font-size: 0.8rem;
}

.timeline-dot-primary { border-color: var(--bs-primary); background: rgba(var(--bs-primary-rgb), 0.1);  color: var(--bs-primary); }
.timeline-dot-success { border-color: var(--bs-success); background: rgba(var(--bs-success-rgb), 0.1);  color: var(--bs-success); }
.timeline-dot-warning { border-color: var(--bs-warning); background: rgba(var(--bs-warning-rgb), 0.12); color: var(--bs-warning); }
.timeline-dot-danger  { border-color: var(--bs-danger);  background: rgba(var(--bs-danger-rgb),  0.1);  color: var(--bs-danger); }

.timeline-content { flex: 1; padding-top: 0.25rem; }
.timeline-time { font-size: 0.78rem; color: var(--bs-tertiary-color); font-weight: 500; margin-bottom: 0.2rem; }
.timeline-title { font-size: 0.9rem; font-weight: 600; color: var(--bs-emphasis-color); margin-bottom: 0.2rem; }
.timeline-body { font-size: 0.875rem; color: var(--bs-secondary-color); }

/* ── Empty state ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3.5rem 2rem;
}

.empty-state-icon {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: var(--bs-border-radius-xl);
  background: var(--bs-secondary-bg);
  color: var(--bs-tertiary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.empty-state-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--bs-emphasis-color);
  margin-bottom: 0.375rem;
}

.empty-state-text {
  font-size: 0.875rem;
  color: var(--bs-tertiary-color);
  max-width: 320px;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

/* ── Notification items ── */
.notification-item {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  padding: 0.875rem 1rem;
  border-radius: var(--bs-border-radius);
  transition: background var(--transition-fast);
  text-decoration: none;
  color: var(--bs-body-color);
  position: relative;
}

.notification-item:hover { background: var(--bs-secondary-bg); color: var(--bs-body-color); }

.notification-item.unread::after {
  content: '';
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--bs-primary);
}

.notification-title { font-size: 0.875rem; font-weight: 600; color: var(--bs-emphasis-color); margin-bottom: 0.15rem; }
.notification-text  { font-size: 0.8125rem; color: var(--bs-secondary-color); line-height: 1.45; }
.notification-time  { font-size: 0.75rem; color: var(--bs-tertiary-color); margin-top: 0.2rem; }

/* ── Search input ── */
.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input-wrap .search-icon {
  position: absolute;
  left: 0.75rem;
  pointer-events: none;
  color: var(--bs-tertiary-color);
  width: 1rem;
  height: 1rem;
  transition: color var(--transition-fast);
}

.search-input-wrap .form-control {
  padding-left: 2.375rem;
}

.search-input-wrap:focus-within .search-icon { color: var(--bs-primary); }

/* ── Table toolbar ── */
.table-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--bs-border-color);
  flex-wrap: wrap;
}

.table-toolbar-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--bs-emphasis-color);
  margin-right: auto;
}

.table-toolbar-actions { display: flex; align-items: center; gap: 0.5rem; }

/* ── Stat / KPI display values ── */
.stat-value {
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--bs-emphasis-color);
}

.stat-value-sm { font-size: 1.375rem; }
.stat-value-lg { font-size: 2.5rem; }

.stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--bs-secondary-color);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-delta { font-size: 0.8rem; font-weight: 600; display: inline-flex; align-items: center; gap: 0.2rem; }
.stat-delta-up   { color: var(--bs-success); }
.stat-delta-down { color: var(--bs-danger); }
.stat-delta-flat { color: var(--bs-tertiary-color); }


/* ════════════════════════════════════════════════════════════
   § 7 — SOFT BADGE VARIANTS
   ════════════════════════════════════════════════════════════ */

[class*="badge-soft-"] {
  font-weight: 600;
  font-size: 0.75em;
  border-radius: var(--bs-border-radius-sm);
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
}

.badge-soft-primary  { color: var(--bs-primary);        background: rgba(var(--bs-primary-rgb),  0.1);  border: 1px solid rgba(var(--bs-primary-rgb),  0.2); }
.badge-soft-secondary{ color: var(--bs-secondary-color); background: rgba(var(--bs-secondary-rgb),0.08); border: 1px solid rgba(var(--bs-secondary-rgb),0.15); }
.badge-soft-success  { color: var(--bs-success);        background: rgba(var(--bs-success-rgb),  0.1);  border: 1px solid rgba(var(--bs-success-rgb),  0.22); }
.badge-soft-warning  { color: var(--bs-warning);        background: rgba(var(--bs-warning-rgb),  0.12); border: 1px solid rgba(var(--bs-warning-rgb),  0.24); }
.badge-soft-danger   { color: var(--bs-danger);         background: rgba(var(--bs-danger-rgb),   0.1);  border: 1px solid rgba(var(--bs-danger-rgb),   0.22); }
.badge-soft-info     { color: var(--bs-info);           background: rgba(var(--bs-info-rgb),     0.1);  border: 1px solid rgba(var(--bs-info-rgb),     0.22); }


/* ════════════════════════════════════════════════════════════
   § 8 — UTILITIES
   ════════════════════════════════════════════════════════════ */

/* Typography helpers */
.text-xs   { font-size: 0.75rem !important; }
.text-sm   { font-size: 0.875rem !important; }
.text-base { font-size: 0.9375rem !important; }
.text-lg   { font-size: 1.125rem !important; }
.text-xl   { font-size: 1.375rem !important; }
.text-mono { font-family: var(--bs-font-monospace); font-size: 0.875em; }

.fw-medium { font-weight: 500 !important; }

.text-emphasis { color: var(--bs-emphasis-color) !important; }
.text-tertiary { color: var(--bs-tertiary-color) !important; }

/* Dividers */
.divider       { border: none; border-top: 1px solid var(--bs-border-color); margin: 1.5rem 0; opacity: 1; }
.divider-sm    { margin: 0.75rem 0; }
.divider-lg    { margin: 2.5rem 0; }

/* Vertical divider */
.vr { background: var(--bs-border-color); opacity: 1; }

/* Example / placeholder block */
.example-block {
  border: 1px dashed var(--bs-border-color);
  border-radius: var(--bs-border-radius-lg);
  padding: 1.25rem;
  background: rgba(var(--bs-secondary-bg-rgb), 0.45);
}

/* Subtle truncated text */
.text-truncate-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Amount colors */
.amount-positive { color: var(--bs-success); font-weight: 600; }
.amount-negative { color: var(--bs-danger);  font-weight: 600; }
.amount-neutral  { color: var(--bs-tertiary-color); }

/* Transition helpers */
.transition-none { transition: none !important; }


/* ════════════════════════════════════════════════════════════
   § 9 — RESPONSIVE
   ════════════════════════════════════════════════════════════ */

@media (max-width: 991.98px) {
  .app-body { flex-direction: column; }

  .app-sidebar {
    width: 100%;
    min-height: auto;
    border-right: none;
    border-bottom: 1px solid var(--app-sidebar-border);
  }

  .app-sidebar.d-lg-flex { display: none !important; }

  .app-page { padding: 1.25rem 1rem; }
}

@media (max-width: 575.98px) {
  .table-toolbar { flex-direction: column; align-items: flex-start; }
  .table-toolbar-title { margin-right: 0; }
  .stat-value { font-size: 1.5rem; }
}