/* ═══════════════════════════════════════════════════════════════
   Dark Mode & Theme Custom Properties System (WCAG AA Compliant)
   ═══════════════════════════════════════════════════════════════ */

:root,
[data-theme="light"] {
  --bg-primary:      #ffffff;
  --bg-secondary:    #f8fafc;
  --bg-card:         #ffffff;
  --text-primary:    #0f172a;
  --text-secondary:  #475569;
  --border-color:    #e2e8f0;
  --shadow-color:    rgba(15, 23, 42, 0.08);
}

[data-theme="dark"] {
  --bg-primary:      #0f172a; /* Slate 900 */
  --bg-secondary:    #1e293b; /* Slate 800 */
  --bg-card:         #1e293b; /* Slate 800 */
  --text-primary:    #f8fafc; /* Slate 50 */
  --text-secondary:  #cbd5e1; /* Slate 300 - 4.5:1+ contrast */
  --border-color:    #334155; /* Slate 700 */
  --shadow-color:    rgba(0, 0, 0, 0.4);

  color-scheme: dark;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.card,
.modal-content,
.dropdown-menu,
.sidebar {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.table {
  color: var(--text-primary);
  border-color: var(--border-color);
}

@media (prefers-reduced-motion: reduce) {
  body {
    transition: none !important;
  }
}

/* ── Global Dark Mode Form & Input Overrides ────────────────────────────── */
[data-theme="dark"] body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

[data-theme="dark"] .form-control {
  background-color: var(--bg-secondary) !important;
  color: #f8fafc !important;
  border-color: var(--border-color) !important;
}

[data-theme="dark"] .form-select,
[data-theme="dark"] select,
[data-theme="dark"] select.form-control,
[data-theme="dark"] select.form-select {
  background-color: var(--bg-secondary) !important;
  color: #f8fafc !important;
  border-color: var(--border-color) !important;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23f8fafc'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2.5' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E") !important;
  background-repeat: no-repeat !important;
  background-position: right 0.85rem center !important;
  background-size: 1.1rem !important;
  padding-right: 2.5rem !important;
  cursor: pointer !important;
}
[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] select:focus {
  background-color: var(--bg-secondary) !important;
  color: #f8fafc !important;
}
[data-theme="dark"] .form-control::placeholder { color: var(--gray-500); }
select option,
.form-control option,
.form-select option {
  background-color: #ffffff !important;
  color: #0f172a !important;
}

[data-theme="dark"] select option,
[data-theme="dark"] .form-control option,
[data-theme="dark"] .form-select option {
  background-color: #1e293b !important;
  color: #f8fafc !important;
}

[data-theme="dark"] .form-control:disabled,
[data-theme="dark"] .form-control:read-only {
  background: rgba(255,255,255,0.05);
  color: var(--gray-500);
}
[data-theme="dark"] .form-label { color: var(--text-primary); }
[data-theme="dark"] .input-group-text {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

/* Scrollbar dark mode */
[data-theme="dark"] ::-webkit-scrollbar-track { background: var(--bg-secondary); }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: var(--gray-600); }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: var(--gray-500); }

/* Sections & page backgrounds */
[data-theme="dark"] section { background-color: inherit; }

/* Toast / alert components in dark mode */
[data-theme="dark"] .alert-success { background: rgba(16, 185, 129, 0.15); border-color: rgba(16, 185, 129, 0.3); color: #6ee7b7; }
[data-theme="dark"] .alert-danger { background: rgba(244, 63, 94, 0.15); border-color: rgba(244, 63, 94, 0.3); color: #fda4af; }
[data-theme="dark"] .alert-warning { background: rgba(245, 158, 11, 0.15); border-color: rgba(245, 158, 11, 0.3); color: #fcd34d; }
[data-theme="dark"] .alert-info { background: rgba(59, 130, 246, 0.15); border-color: rgba(59, 130, 246, 0.3); color: #93c5fd; }

/* Ghost button dark mode */
[data-theme="dark"] .btn-ghost {
  color: var(--text-secondary);
}
[data-theme="dark"] .btn-ghost:hover:not(:disabled) {
  background: rgba(255,255,255,0.08);
  color: var(--text-primary);
}

/* Outline button dark mode */
[data-theme="dark"] .btn-outline {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
}

/* Code / pre blocks */
[data-theme="dark"] pre,
[data-theme="dark"] code {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

/* Horizontal rule */
[data-theme="dark"] hr { border-color: var(--border-color); }