:root {
  --bg-body: #f5f5f5;
  --bg-card: #ffffff;
  --bg-card-alt: #f8f9fa;
  --text-primary: #212529;
  --text-muted: #6c757d;
  --border-color: #dee2e6;
  --input-bg: #ffffff;
  --input-border: #ced4da;
  --table-stripe: rgba(0,0,0,0.02);
  --shadow-color: rgba(0,0,0,0.1);
}

[data-theme="dark"] {
  --bg-body: #1a1a2e;
  --bg-card: #16213e;
  --bg-card-alt: #1a1a2e;
  --text-primary: #e0e0e0;
  --text-muted: #a0a0a0;
  --border-color: #2a2a4a;
  --input-bg: #1a1a2e;
  --input-border: #2a2a4a;
  --table-stripe: rgba(255,255,255,0.03);
  --shadow-color: rgba(0,0,0,0.3);

  /* Override Bootstrap 5 CSS variables */
  --bs-body-bg: #1a1a2e;
  --bs-body-color: #e0e0e0;
  --bs-card-bg: #16213e;
  --bs-card-border-color: #2a2a4a;
  --bs-table-bg: #16213e;
  --bs-table-color: #e0e0e0;
  --bs-table-striped-bg: rgba(255,255,255,0.03);
  --bs-table-hover-bg: rgba(255,255,255,0.05);
  --bs-table-border-color: #2a2a4a;
  --bs-border-color: #2a2a4a;
  --bs-tertiary-bg: #1a1a2e;
  color-scheme: dark;
}

html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
  background-color: var(--bg-body);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

[data-theme="dark"] .card,
[data-theme="dark"] .upload-card,
[data-theme="dark"] .download-card,
[data-theme="dark"] .modal-content,
[data-theme="dark"] .upload-modal-box,
[data-theme="dark"] .accordion-item,
[data-theme="dark"] .list-group-item {
  background-color: var(--bg-card) !important;
  color: var(--text-primary);
  border-color: var(--border-color);
}

[data-theme="dark"] .card-header {
  background-color: var(--bg-card-alt);
  border-color: var(--border-color);
}

[data-theme="dark"] .table {
  color: var(--text-primary);
  --bs-table-bg: var(--bg-card);
  --bs-table-color: var(--text-primary);
  --bs-table-striped-bg: var(--table-stripe);
  --bs-table-striped-color: var(--text-primary);
  --bs-table-hover-bg: rgba(255,255,255,0.05);
  --bs-table-hover-color: var(--text-primary);
  --bs-table-border-color: var(--border-color);
  border-color: var(--border-color);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: var(--input-bg);
  color: var(--text-primary);
  border-color: var(--input-border);
}

[data-theme="dark"] .text-muted {
  color: var(--text-muted) !important;
}

[data-theme="dark"] .dropdown-menu {
  background-color: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .dropdown-item {
  color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover {
  background-color: var(--bg-card-alt);
}

[data-theme="dark"] .alert-secondary {
  background-color: var(--bg-card-alt);
  color: var(--text-muted);
  border-color: var(--border-color);
}

[data-theme="dark"] .drop-zone {
  background: var(--bg-card-alt) !important;
  border-color: var(--border-color) !important;
}

[data-theme="dark"] .drop-zone:hover {
  border-color: #6C63FF !important;
  background: #1e1e3a !important;
}

[data-theme="dark"] .drop-zone.dragover {
  border-color: #6C63FF !important;
  background: #252545 !important;
}

[data-theme="dark"] .file-list-item,
[data-theme="dark"] .card-banner {
  background-color: var(--bg-card-alt) !important;
  border-color: var(--border-color) !important;
  color: var(--text-primary);
}

[data-theme="dark"] .header {
  background-color: var(--bg-body) !important;
  color: var(--text-primary) !important;
}

[data-theme="dark"] .page-link {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.theme-toggle {
  cursor: pointer;
  padding: 4px 8px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 6px;
  background: rgba(255,255,255,0.1);
  color: white;
  font-size: 0.8rem;
  line-height: 1;
  transition: background 0.2s ease;
  display: flex;
  align-items: center;
  gap: 4px;
}
.theme-toggle:hover {
  background: rgba(255,255,255,0.2);
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
}

/* Dark mode - additional overrides for inline style patterns */
[data-theme="dark"] .card-body,
[data-theme="dark"] .accordion-body {
  background-color: var(--bg-card) !important;
  color: var(--text-primary);
}

[data-theme="dark"] .border,
[data-theme="dark"] .border-rounded {
  border-color: var(--border-color) !important;
}

[data-theme="dark"] .table-dark {
  --bs-table-bg: #0f1529;
  --bs-table-color: #e0e0e0;
  --bs-table-border-color: #2a2a4a;
}

[data-theme="dark"] .table-danger > * {
  --bs-table-bg: #2e1a1a;
  --bs-table-color: #e0e0e0;
  --bs-table-striped-color: #e0e0e0;
}

[data-theme="dark"] .table-warning > * {
  --bs-table-bg: #2e2a1a;
  --bs-table-color: #e0e0e0;
  --bs-table-striped-color: #e0e0e0;
}

[data-theme="dark"] .btn-outline-dark {
  color: var(--text-primary);
  border-color: var(--border-color);
}

[data-theme="dark"] .btn-outline-dark:hover,
[data-theme="dark"] .btn-dark {
  background-color: #2a2a4a;
  color: var(--text-primary);
  border-color: #2a2a4a;
}

[data-theme="dark"] .form-check-input {
  background-color: var(--input-bg);
  border-color: var(--input-border);
}

/* Explicit body override for dark mode */
html[data-theme="dark"] body {
  background-color: var(--bg-body) !important;
  color: var(--text-primary) !important;
}

/* Override hardcoded inline text colors in dark mode */
[data-theme="dark"] .upload-card [style*="color:#721c24"],
[data-theme="dark"] .upload-card [style*="color:#555"],
[data-theme="dark"] .download-card [style*="color:#721c24"],
[data-theme="dark"] .download-card [style*="color:#555"] {
  color: var(--text-muted) !important;
}

[data-theme="dark"] [style*="color:#888"],
[data-theme="dark"] [style*="color:#aaa"] {
  color: var(--text-muted) !important;
}

[data-theme="dark"] [style*="background:#f0f0f0"],
[data-theme="dark"] [style*="background-color:#f0f0f0"] {
  background-color: var(--bg-card-alt) !important;
  color: var(--text-primary) !important;
  border-color: var(--border-color) !important;
}

/* Green banner in dark mode */
[data-theme="dark"] .card-banner[style*="background-color:#e8f5e9"] {
  background-color: #0f2e1a !important;
  border-color: #1a4a2e !important;
  color: #75d99e !important;
}

/* btn-outline-secondary in dark mode */
[data-theme="dark"] .btn-outline-secondary {
  color: var(--text-muted);
  border-color: var(--border-color);
}

[data-theme="dark"] .btn-outline-secondary:hover {
  background-color: var(--bg-card-alt);
  color: var(--text-primary);
  border-color: var(--border-color);
}

/* Input placeholder color in dark mode */
[data-theme="dark"] ::placeholder {
  color: var(--text-muted) !important;
  opacity: 0.7;
}

/* Ensure select options are readable in dark mode */
[data-theme="dark"] select option {
  background-color: var(--bg-card);
  color: var(--text-primary);
}

[data-theme="dark"] .form-label {
  color: var(--text-primary);
}

[data-theme="dark"] .form-text {
  color: var(--text-muted) !important;
}

[data-theme="dark"] .alert-success {
  background-color: #0f2e1a;
  color: #75d99e;
  border-color: #1a4a2e;
}

[data-theme="dark"] .alert-danger,
[data-theme="dark"] .alert-warning {
  background-color: #2e1a1a;
  color: #d99e9e;
  border-color: #4a2a2a;
}

[data-theme="dark"] .card.shadow-sm,
[data-theme="dark"] .card.shadow {
  box-shadow: 0 2px 8px rgba(0,0,0,0.4) !important;
}

/* Password strength meter */
.pwd-strength-bar {
  height: 4px;
  border-radius: 2px;
  margin-top: 6px;
  transition: all 0.3s ease;
}

/* Responsive file actions */
@media (max-width: 767px) {
  .file-actions-full { display: none !important; }
  .file-actions-mobile { display: block !important; }
}

@media (min-width: 768px) {
  .file-actions-full { display: flex !important; }
  .file-actions-mobile { display: none !important; }
}