/* Dark Mode CSS Variables and Styles */

:root {
  /* Light Mode Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f6f6f6;
  --bg-tertiary: #f8f9fa;
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --border-color: #e9ecef;
  --border-light: #f1f3f4;
  --shadow-light: rgba(0, 0, 0, 0.1);
  --shadow-medium: rgba(0, 0, 0, 0.15);
  --accent-color: #337ab7;
  --accent-hover: #23527c;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --info-color: #17a2b8;
  
  /* Bootstrap overrides for light mode */
  --bs-body-bg: var(--bg-primary);
  --bs-body-color: var(--text-primary);
  --bs-secondary-color: var(--text-secondary);
  --bs-border-color: var(--border-color);
  --bs-link-color: var(--accent-color);
  --bs-link-hover-color: var(--accent-hover);
}

[data-theme="dark"] {
  /* Dark Mode Colors */
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-tertiary: #3a3a3a;
  --text-primary: #e0e0e0;
  --text-secondary: #b0b0b0;
  --text-muted: #808080;
  --border-color: #404040;
  --border-light: #4a4a4a;
  --shadow-light: rgba(0, 0, 0, 0.3);
  --shadow-medium: rgba(0, 0, 0, 0.4);
  --accent-color: #4a9eff;
  --accent-hover: #6bb6ff;
  --success-color: #4caf50;
  --warning-color: #ff9800;
  --danger-color: #f44336;
  --info-color: #2196f3;
  
  /* Bootstrap overrides for dark mode */
  --bs-body-bg: var(--bg-primary);
  --bs-body-color: var(--text-primary);
  --bs-secondary-color: var(--text-secondary);
  --bs-border-color: var(--border-color);
  --bs-link-color: var(--accent-color);
  --bs-link-hover-color: var(--accent-hover);
}

/* Global dark mode styles */
[data-theme="dark"] {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

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

/* Navigation bar dark mode */
[data-theme="dark"] .navbar-inverse {
  background-color: var(--bg-primary);
  border-color: var(--border-color);
}

[data-theme="dark"] .navbar-inverse .navbar-brand-name {
  color: var(--text-primary);
}

[data-theme="dark"] .navbar-inverse .navbar-brand-title {
  color: var(--text-secondary);
}

[data-theme="dark"] .navbar-inverse .navbar-nav > li > a {
  color: var(--text-secondary);
}

[data-theme="dark"] .navbar-inverse .navbar-nav > li > a:hover {
  color: var(--text-primary);
}

/* Header section dark mode */
[data-theme="dark"] .page-header {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .list-group-item {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

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

[data-theme="dark"] .list-group-item-text {
  color: var(--text-secondary);
}

/* Floating navigation dark mode */
[data-theme="dark"] .floating-nav {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px var(--shadow-medium);
}

[data-theme="dark"] .floating-nav strong {
  color: var(--text-primary);
}

[data-theme="dark"] .floating-nav a {
  color: var(--accent-color);
}

[data-theme="dark"] .floating-nav a:hover {
  color: var(--accent-hover);
}

/* Navigation shortcuts styling */
.nav-shortcuts {
  margin-top: 15px;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
}

.nav-shortcuts small {
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1.3;
}

.nav-shortcuts kbd {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2);
  color: var(--text-primary);
  display: inline-block;
  font-size: 10px;
  font-weight: bold;
  line-height: 1;
  padding: 2px 4px;
  white-space: nowrap;
}

/* Social buttons dark mode */
[data-theme="dark"] .btn-social-icon {
  border-color: var(--border-color);
}

/* RSS icon alignment fix */
.btn-rss i {
  line-height: 34px;
  vertical-align: middle;
}

/* Ensure all social icons have consistent alignment */
.social-icon .btn-social-icon i {
  line-height: 34px;
  vertical-align: middle;
}

.social-icon .btn-social-icon img {
  vertical-align: middle;
  margin-top: -2px;
}

/* Links and text dark mode */
[data-theme="dark"] a {
  color: var(--accent-color);
}

[data-theme="dark"] a:hover {
  color: var(--accent-hover);
}

[data-theme="dark"] h1, 
[data-theme="dark"] h2, 
[data-theme="dark"] h3, 
[data-theme="dark"] h4, 
[data-theme="dark"] h5, 
[data-theme="dark"] h6 {
  color: var(--text-primary);
}

[data-theme="dark"] p {
  color: var(--text-secondary);
}

/* Bootstrap components dark mode */
[data-theme="dark"] .btn-default {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

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

[data-theme="dark"] .btn-link {
  color: var(--accent-color);
}

[data-theme="dark"] .btn-link:hover {
  color: var(--accent-hover);
}

/* Publication sections dark mode */
[data-theme="dark"] .pub-title {
  color: var(--text-primary);
}

[data-theme="dark"] .pub-author {
  color: var(--text-secondary);
}

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

/* Code blocks dark mode */
[data-theme="dark"] pre {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] code {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

/* Form elements dark mode */
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

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

/* Scrollbar dark mode */
[data-theme="dark"] ::-webkit-scrollbar {
  width: 8px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: var(--border-light);
}

/* Dark mode toggle button */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px var(--shadow-light);
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  transform: scale(1.1);
}

.theme-toggle i {
  font-size: 20px;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

/* Smooth transitions for theme switching */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Mobile responsiveness for theme toggle */
@media (max-width: 768px) {
  .theme-toggle {
    top: 15px;
    right: 15px;
    width: 45px;
    height: 45px;
  }
  
  .theme-toggle i {
    font-size: 18px;
  }
}

/* Print styles - always use light mode for printing */
@media print {
  [data-theme="dark"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f6f6;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e9ecef;
  }
  
  .theme-toggle {
    display: none !important;
  }
}