/* ==========================================================================
   Dark Mode CSS Variables & Global Overrides
   Optimized: DRY variables, better contrast, smoother transitions
   ========================================================================== */

/* ---- Base Light Theme Variables ---- */
:root {
  /* Backgrounds */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F8FAFC;
  --color-bg-tertiary: #F0F9FF;
  --color-bg-card: #FFFFFF;
  --color-bg-input: #F8FAFC;
  --color-bg-hover: #F0F9FF;
  --color-bg-navbar: rgba(255, 255, 255, 0.92);
  --color-bg-backdrop: rgba(255, 255, 255, 0.7);
  --color-bg-tooltip: #0F172A;
  --color-bg-code: #F1F5F9;

  /* Text */
  --color-text-primary: #0C4A6E;
  --color-text-secondary: #334155;
  --color-text-muted: #64748B;
  --color-text-placeholder: #94A3B8;
  --color-text-inverse: #FFFFFF;
  --color-text-code: #0F172A;

  /* Borders */
  --color-border-primary: #E2E8F0;
  --color-border-secondary: #CBD5E1;
  --color-border-focus: #0EA5E9;

  /* Accent */
  --color-accent: #0EA5E9;
  --color-accent-light: #38BDF8;
  --color-accent-bg: #E0F2FE;
  --color-accent-text: #0369A1;
  --color-cta: #F97316;
  --color-cta-hover: #EA580C;

  /* Semantic */
  --color-danger-bg: #FEF2F2;
  --color-danger-text: #991B1B;
  --color-danger-border: #EF4444;
  --color-success-bg: #F0FDF4;
  --color-success-text: #166534;
  --color-success-border: #22C55E;
  --color-warning-bg: #FEF3C7;
  --color-warning-text: #92400E;
  --color-info-bg: #EFF6FF;
  --color-info-text: #1E40AF;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 10px 15px -3px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08);
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.04), 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 0 0 1px rgba(14, 165, 233, 0.04);
  --shadow-glow: 0 0 0 3px rgba(14, 165, 233, 0.15);
  --shadow-cta: 0 4px 12px rgba(249, 115, 22, 0.3);
  --shadow-cta-hover: 0 6px 16px rgba(249, 115, 22, 0.4);
  --shadow-accent: 0 4px 12px rgba(14, 165, 233, 0.3);

  /* Gradients */
  --gradient-bg: linear-gradient(135deg, #F0F9FF 0%, #E0F2FE 30%, #F8FAFC 60%, #FFFFFF 100%);
  --gradient-btn: linear-gradient(135deg, #F97316, #FB923C);
  --gradient-btn-hover: linear-gradient(135deg, #EA580C, #F97316);
  --gradient-icon: linear-gradient(135deg, #0EA5E9, #38BDF8);

  /* Misc */
  --image-brightness: 1;
  --image-filter: none;
  --btn-close-filter: none;
  --chart-grid: #E2E8F0;
  --chart-text: #64748B;
}

/* ---- Dark Theme Variables (manual) ---- */
[data-theme="dark"] {
  /* Backgrounds - deeper, more saturated */
  --color-bg-primary: #0B1120;
  --color-bg-secondary: #111827;
  --color-bg-tertiary: #1E293B;
  --color-bg-card: #1E293B;
  --color-bg-input: #0F172A;
  --color-bg-hover: #334155;
  --color-bg-navbar: rgba(11, 17, 32, 0.92);
  --color-bg-backdrop: rgba(11, 17, 32, 0.7);
  --color-bg-tooltip: #E2E8F0;
  --color-bg-code: #0F172A;

  /* Text - higher contrast */
  --color-text-primary: #F8FAFC;
  --color-text-secondary: #E2E8F0;
  --color-text-muted: #94A3B8;
  --color-text-placeholder: #64748B;
  --color-text-inverse: #0F172A;
  --color-text-code: #E2E8F0;

  /* Borders */
  --color-border-primary: #334155;
  --color-border-secondary: #475569;
  --color-border-focus: #38BDF8;

  /* Accent - brighter for dark bg */
  --color-accent: #38BDF8;
  --color-accent-light: #7DD3FC;
  --color-accent-bg: rgba(56, 189, 248, 0.12);
  --color-accent-text: #BAE6FD;
  --color-cta: #FB923C;
  --color-cta-hover: #F97316;

  /* Semantic - softer backgrounds */
  --color-danger-bg: rgba(239, 68, 68, 0.12);
  --color-danger-text: #FCA5A5;
  --color-danger-border: #EF4444;
  --color-success-bg: rgba(34, 197, 94, 0.12);
  --color-success-text: #86EFAC;
  --color-success-border: #22C55E;
  --color-warning-bg: rgba(250, 204, 21, 0.12);
  --color-warning-text: #FDE047;
  --color-info-bg: rgba(59, 130, 246, 0.12);
  --color-info-text: #93C5FD;

  /* Shadows - stronger for depth */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(56, 189, 248, 0.08);
  --shadow-glow: 0 0 0 3px rgba(56, 189, 248, 0.2);
  --shadow-cta: 0 4px 12px rgba(251, 146, 60, 0.25);
  --shadow-cta-hover: 0 6px 16px rgba(251, 146, 60, 0.35);
  --shadow-accent: 0 4px 12px rgba(56, 189, 248, 0.25);

  /* Gradients */
  --gradient-bg: linear-gradient(135deg, #0B1120 0%, #111827 40%, #0F172A 70%, #0B1120 100%);
  --gradient-btn: linear-gradient(135deg, #FB923C, #F97316);
  --gradient-btn-hover: linear-gradient(135deg, #F97316, #EA580C);
  --gradient-icon: linear-gradient(135deg, #38BDF8, #7DD3FC);

  /* Misc */
  --image-brightness: 0.85;
  --image-filter: brightness(0.85) contrast(1.05);
  --btn-close-filter: invert(1) grayscale(100%) brightness(200%);
  --chart-grid: #334155;
  --chart-text: #94A3B8;
}

/* ---- Auto Dark (system preference) ---- */
@media (prefers-color-scheme: dark) {
  [data-theme="auto"] {
    --color-bg-primary: #0B1120;
    --color-bg-secondary: #111827;
    --color-bg-tertiary: #1E293B;
    --color-bg-card: #1E293B;
    --color-bg-input: #0F172A;
    --color-bg-hover: #334155;
    --color-bg-navbar: rgba(11, 17, 32, 0.92);
    --color-bg-backdrop: rgba(11, 17, 32, 0.7);
    --color-bg-tooltip: #E2E8F0;
    --color-bg-code: #0F172A;

    --color-text-primary: #F8FAFC;
    --color-text-secondary: #E2E8F0;
    --color-text-muted: #94A3B8;
    --color-text-placeholder: #64748B;
    --color-text-inverse: #0F172A;
    --color-text-code: #E2E8F0;

    --color-border-primary: #334155;
    --color-border-secondary: #475569;
    --color-border-focus: #38BDF8;

    --color-accent: #38BDF8;
    --color-accent-light: #7DD3FC;
    --color-accent-bg: rgba(56, 189, 248, 0.12);
    --color-accent-text: #BAE6FD;
    --color-cta: #FB923C;
    --color-cta-hover: #F97316;

    --color-danger-bg: rgba(239, 68, 68, 0.12);
    --color-danger-text: #FCA5A5;
    --color-danger-border: #EF4444;
    --color-success-bg: rgba(34, 197, 94, 0.12);
    --color-success-text: #86EFAC;
    --color-success-border: #22C55E;
    --color-warning-bg: rgba(250, 204, 21, 0.12);
    --color-warning-text: #FDE047;
    --color-info-bg: rgba(59, 130, 246, 0.12);
    --color-info-text: #93C5FD;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(56, 189, 248, 0.08);
    --shadow-glow: 0 0 0 3px rgba(56, 189, 248, 0.2);
    --shadow-cta: 0 4px 12px rgba(251, 146, 60, 0.25);
    --shadow-cta-hover: 0 6px 16px rgba(251, 146, 60, 0.35);
    --shadow-accent: 0 4px 12px rgba(56, 189, 248, 0.25);

    --gradient-bg: linear-gradient(135deg, #0B1120 0%, #111827 40%, #0F172A 70%, #0B1120 100%);
    --gradient-btn: linear-gradient(135deg, #FB923C, #F97316);
    --gradient-btn-hover: linear-gradient(135deg, #F97316, #EA580C);
    --gradient-icon: linear-gradient(135deg, #38BDF8, #7DD3FC);

    --image-brightness: 0.85;
    --image-filter: brightness(0.85) contrast(1.05);
    --btn-close-filter: invert(1) grayscale(100%) brightness(200%);
    --chart-grid: #334155;
    --chart-text: #94A3B8;
  }
}

/* ==========================================================================
   Smooth Theme Transitions (respects reduced-motion)
   ========================================================================== */
@media (prefers-reduced-motion: no-preference) {
  :root,
  [data-theme="dark"],
  [data-theme="auto"] {
    --theme-transition-duration: 0.25s;
  }

  *,
  *::before,
  *::after {
    transition:
      background-color var(--theme-transition-duration, 0s) ease,
      color var(--theme-transition-duration, 0s) ease,
      border-color var(--theme-transition-duration, 0s) ease,
      box-shadow var(--theme-transition-duration, 0s) ease,
      fill var(--theme-transition-duration, 0s) ease,
      stroke var(--theme-transition-duration, 0s) ease;
  }

  /* Exclude elements where transition is disruptive */
  .no-theme-transition,
  .no-theme-transition *,
  .modal.fade,
  .modal.fade *,
  .dropdown-menu,
  .dropdown-menu *,
  .tooltip,
  .tooltip *,
  .popover,
  .popover *,
  [data-bs-toggle="dropdown"] + .dropdown-menu,
  [data-bs-toggle="dropdown"] + .dropdown-menu * {
    transition: none !important;
  }
}

/* ==========================================================================
   Global Element Overrides
   ========================================================================== */

::selection {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-secondary);
  border-radius: 4px;
}

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

* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-secondary) var(--color-bg-secondary);
}

/* Images - subtle dimming in dark mode */
[data-theme="dark"] img:not(.no-dark-filter):not([src*=".svg"]),
@media (prefers-color-scheme: dark) {
  [data-theme="auto"] img:not(.no-dark-filter):not([src*=".svg"]) {
    filter: var(--image-filter);
  }
}

/* Bootstrap btn-close */
[data-theme="dark"] .btn-close,
@media (prefers-color-scheme: dark) {
  [data-theme="auto"] .btn-close {
    filter: var(--btn-close-filter);
  }
}

/* Navbar toggler */
[data-theme="dark"] .navbar-toggler-icon,
@media (prefers-color-scheme: dark) {
  [data-theme="auto"] .navbar-toggler-icon {
    filter: invert(1) brightness(0.85);
  }
}

/* Form range */
[data-theme="dark"] .form-range::-webkit-slider-runnable-track,
@media (prefers-color-scheme: dark) {
  [data-theme="auto"] .form-range::-webkit-slider-runnable-track {
    background-color: var(--color-border-primary);
  }
}

/* Code blocks */
code, kbd, samp, pre {
  background-color: var(--color-bg-code);
  color: var(--color-text-code);
  border-color: var(--color-border-primary);
}

/* Horizontal rule */
hr {
  border-color: var(--color-border-primary);
  opacity: 0.6;
}

/* Blockquote */
.blockquote {
  border-left-color: var(--color-accent);
  color: var(--color-text-secondary);
}

/* Figure caption */
.figure-caption {
  color: var(--color-text-muted);
}

/* Mark tag */
mark {
  background-color: var(--color-warning-bg);
  color: var(--color-warning-text);
  padding: 0.1em 0.3em;
  border-radius: 0.2em;
}

/* ==========================================================================
   Bootstrap Component Overrides
   ========================================================================== */

.alert-primary {
  background-color: var(--color-accent-bg);
  border-color: var(--color-accent);
  color: var(--color-accent-text);
}

.alert-danger {
  background-color: var(--color-danger-bg);
  border-color: var(--color-danger-border);
  color: var(--color-danger-text);
}

.alert-success {
  background-color: var(--color-success-bg);
  border-color: var(--color-success-border);
  color: var(--color-success-text);
}

.alert-warning {
  background-color: var(--color-warning-bg);
  border-color: #F59E0B;
  color: var(--color-warning-text);
}

.alert-info {
  background-color: var(--color-info-bg);
  border-color: #3B82F6;
  color: var(--color-info-text);
}

.badge.bg-primary-subtle,
.badge.bg-soft-primary {
  background-color: var(--color-accent-bg) !important;
  color: var(--color-accent) !important;
}

.progress {
  background-color: var(--color-bg-secondary);
}

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

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

.tooltip .tooltip-inner {
  background-color: var(--color-bg-tooltip);
  color: var(--color-text-inverse);
}

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

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

/* ==========================================================================
   Tabler UI Component Overrides
   ========================================================================== */

.navbar-vertical {
  background-color: var(--color-bg-card) !important;
  border-right: 1px solid var(--color-border-primary) !important;
}

.navbar-vertical .nav-link {
  color: var(--color-text-secondary) !important;
}

.navbar-vertical .nav-link:hover,
.navbar-vertical .nav-link:focus {
  background-color: var(--color-bg-hover) !important;
  color: var(--color-text-primary) !important;
}

.navbar-vertical .nav-link.active {
  background-color: var(--color-accent-bg) !important;
  color: var(--color-accent) !important;
}

.card {
  background-color: var(--color-bg-card);
  border-color: var(--color-border-primary);
}

.card-status-top {
  border-top-color: var(--color-border-primary);
}

.card-stacked::after {
  border-color: var(--color-border-primary);
}

.table {
  --tblr-table-bg: var(--color-bg-card);
  --tblr-table-color: var(--color-text-primary);
  --tblr-table-border-color: var(--color-border-primary);
  --tblr-table-striped-bg: var(--color-bg-secondary);
  --tblr-table-hover-bg: var(--color-bg-hover);
}

.table thead th {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border-bottom-color: var(--color-border-primary);
}

.avatar {
  --tblr-avatar-bg: var(--color-accent);
}

.avatar-rounded {
  --tblr-avatar-bg: var(--color-bg-secondary);
}

.page-header {
  border-bottom-color: var(--color-border-primary);
}

.page-pretitle {
  color: var(--color-text-muted);
}

.step-item {
  color: var(--color-text-muted);
}

.step-item.active {
  color: var(--color-accent);
}

.ribbon {
  --tblr-ribbon-bg: var(--color-accent);
}

.status-dot {
  --tblr-status-dot-bg: var(--color-text-muted);
}

.form-select,
.form-select:focus {
  background-color: var(--color-bg-input);
  border-color: var(--color-border-primary);
  color: var(--color-text-primary);
}

.form-check-input {
  background-color: var(--color-bg-input);
  border-color: var(--color-border-secondary);
}

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

.form-check-input:focus {
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-glow);
}

.empty {
  color: var(--color-text-muted);
}

.empty-icon {
  color: var(--color-text-muted);
}

.modal-backdrop {
  background-color: var(--color-bg-backdrop);
}

.toast {
  background-color: var(--color-bg-card);
  border-color: var(--color-border-primary);
}

.toast-header {
  background-color: var(--color-bg-secondary);
  border-bottom-color: var(--color-border-primary);
  color: var(--color-text-primary);
}

.offcanvas {
  background-color: var(--color-bg-card);
}

.offcanvas-header {
  border-bottom-color: var(--color-border-primary);
}

/* ==========================================================================
   Theme Toggle Button
   ========================================================================== */

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.4rem 0.75rem;
  border: 1.5px solid var(--color-border-primary);
  border-radius: 0.625rem;
  background: var(--color-bg-card);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  user-select: none;
  position: relative;
}

.theme-toggle-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-bg-hover);
}

.theme-toggle-btn:active {
  transform: scale(0.96);
}

.theme-toggle-btn i {
  font-size: 1rem;
  pointer-events: none;
}

.theme-toggle-label {
  pointer-events: none;
}

.theme-toggle-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 150px;
  padding: 0.375rem;
  border: 1px solid var(--color-border-primary);
  border-radius: 0.75rem;
  background: var(--color-bg-card);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  animation: themeMenuIn 0.15s ease;
}

.theme-toggle-menu.show {
  display: block;
}

@keyframes themeMenuIn {
  from { opacity: 0; transform: translateY(-4px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.theme-toggle-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: none;
  border-radius: 0.5rem;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.12s ease;
}

.theme-toggle-option:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.theme-toggle-option.active {
  background: var(--color-accent-bg);
  color: var(--color-accent);
  font-weight: 600;
}

.theme-toggle-option i {
  font-size: 1rem;
  width: 1.25rem;
  text-align: center;
}

/* ==========================================================================
   Print Styles - always light
   ========================================================================== */
@media print {
  :root,
  [data-theme="dark"],
  [data-theme="auto"] {
    --color-bg-primary: #FFFFFF !important;
    --color-bg-secondary: #F8FAFC !important;
    --color-bg-card: #FFFFFF !important;
    --color-text-primary: #0C4A6E !important;
    --color-text-secondary: #334155 !important;
    --color-text-muted: #64748B !important;
    --color-border-primary: #E2E8F0 !important;
    --gradient-bg: none !important;
    --image-filter: none !important;
    --btn-close-filter: none !important;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}