/*!
 * Theme Switcher for TVXL Blog
 * Dark mode and light mode with system preference detection
 */

/* Light mode (default) */
:root {
  --bg-color: #ffffff;
  --text-color: #404040;
  --text-secondary: #808080;
  --text-muted: #bfbfbf;
  --link-color: #404040;
  --link-hover: #0085A1;
  --border-color: #eee;
  --code-bg: #f5f5f5;
  --blockquote-color: #808080;
  --navbar-bg: rgba(255, 255, 255, 0.9);
  --navbar-shadow: rgba(0, 0, 0, 0.05);
  --intro-bg: #282828;
  --card-bg: #ffffff;
  --sidebar-text: #bfbfbf;
  --sidebar-heading: #808080;
}

/* Dark mode */
[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #e4e4e4;
  --text-secondary: #b0b0b0;
  --text-muted: #707070;
  --link-color: #e4e4e4;
  --link-hover: #4db8d8;
  --border-color: #333333;
  --code-bg: #2d2d2d;
  --blockquote-color: #b0b0b0;
  --navbar-bg: rgba(26, 26, 26, 0.9);
  --navbar-shadow: rgba(255, 255, 255, 0.05);
  --intro-bg: #0a0a0a;
  --card-bg: #242424;
  --sidebar-text: #b0b0b0;
  --sidebar-heading: #909090;
}

/* Apply theme variables */
body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

a {
  color: var(--link-color);
}

a:hover,
a:focus {
  color: var(--link-hover);
}

blockquote {
  color: var(--blockquote-color);
}

/* Navbar theming */
.navbar-custom {
  background-color: transparent;
  border-bottom: 1px solid transparent;
}

.navbar-custom .navbar-brand,
.navbar-custom .nav li a {
  color: white;
}

.navbar-custom .navbar-brand:hover,
.navbar-custom .nav li a:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* Dark mode navbar - also keep transparent at top */
[data-theme="dark"] .navbar-custom {
  background-color: transparent;
}

[data-theme="dark"] .navbar-custom .navbar-brand,
[data-theme="dark"] .navbar-custom .nav li a {
  color: white;
}

/* Fixed navbar (when scrolling) */
.navbar-custom.is-fixed {
  background-color: var(--navbar-bg) !important;
  border-bottom: 1px solid var(--border-color) !important;
}

.navbar-custom.is-fixed .navbar-brand,
.navbar-custom.is-fixed .nav li a {
  color: var(--text-color) !important;
}

.navbar-custom.is-fixed .navbar-brand:hover,
.navbar-custom.is-fixed .navbar-brand:focus,
.navbar-custom.is-fixed .nav li a:hover,
.navbar-custom.is-fixed .nav li a:focus {
  color: var(--link-hover) !important;
}

/* Mobile navbar collapse */
@media only screen and (max-width: 767px) {
  /* Disable scroll behavior on mobile */
  .navbar-custom {
    position: fixed !important;
    top: 0 !important;
    transform: none !important;
  }

  .navbar-custom.is-fixed,
  .navbar-custom.is-visible {
    transform: none !important;
    background-color: transparent !important;
    border-bottom: 1px solid transparent !important;
  }

  .navbar-custom.is-fixed .navbar-brand,
  .navbar-custom.is-fixed .nav li a,
  .navbar-custom.is-visible .navbar-brand,
  .navbar-custom.is-visible .nav li a {
    color: white !important;
  }

  /* Keep theme toggle white in navbar (not in dropdown) */
  .navbar-custom .theme-toggle:not(.navbar-collapse .theme-toggle),
  .navbar-custom.is-fixed .theme-toggle:not(.navbar-collapse .theme-toggle) {
    color: white !important;
  }

  .navbar-default .navbar-collapse {
    background: var(--card-bg) !important;
  }

  .navbar-default .navbar-collapse,
  #huxblog_navbar .navbar-collapse {
    box-shadow: 0px 5px 10px 2px rgba(0, 0, 0, 0.2);
  }

  [data-theme="dark"] .navbar-default .navbar-collapse,
  [data-theme="dark"] #huxblog_navbar .navbar-collapse {
    box-shadow: 0px 5px 10px 2px rgba(0, 0, 0, 0.5);
  }

  /* Fix mobile menu text color */
  .navbar-collapse .nav li a {
    color: var(--text-color) !important;
  }

  .navbar-collapse .nav li a:hover,
  .navbar-collapse .nav li a:active {
    color: var(--link-hover) !important;
  }

  /* Fix theme toggle in mobile menu */
  .navbar-collapse .theme-toggle {
    color: var(--text-color) !important;
    text-shadow: none;
  }

  .navbar-collapse .theme-toggle:hover {
    color: var(--link-hover) !important;
  }

  /* Keep navbar toggle button white */
  .navbar-custom .navbar-toggle .icon-bar,
  .navbar-custom.is-fixed .navbar-toggle .icon-bar {
    background-color: white !important;
  }
}

/* Navbar toggle button (hamburger menu) */
.navbar-default .navbar-toggle .icon-bar {
  background-color: white;
}

.navbar-custom.is-fixed .navbar-toggle .icon-bar {
  background-color: var(--text-color) !important;
}

.navbar-default .navbar-toggle:active {
  background-color: var(--border-color) !important;
}

/* Intro header */
.intro-header .site-heading,
.intro-header .post-heading,
.intro-header .page-heading {
  color: #ffffff;
}

/* Post preview */
.post-preview > a {
  color: var(--text-color);
}

.post-preview > a:hover,
.post-preview > a:focus {
  color: var(--link-hover);
}

.post-preview > .post-meta {
  color: var(--text-secondary);
}

/* Sidebar */
.sidebar-container {
  color: var(--sidebar-text);
}

.sidebar-container h5,
.sidebar-container h5 a {
  color: var(--sidebar-heading) !important;
}

/* Code blocks */
pre,
code {
  background-color: var(--code-bg);
}

/* Syntax highlighting */
.highlight pre,
pre,
.highlight .hll {
  background-color: var(--code-bg) !important;
  border-color: var(--border-color) !important;
}

/* Dark mode syntax highlighting adjustments */
[data-theme="dark"] .highlight .c { color: #8b949e; }
[data-theme="dark"] .highlight .err { color: #f85149; background-color: transparent; }
[data-theme="dark"] .highlight .k { color: #ff7b72; }
[data-theme="dark"] .highlight .o { color: #ff7b72; }
[data-theme="dark"] .highlight .cm { color: #8b949e; }
[data-theme="dark"] .highlight .cp { color: #8b949e; }
[data-theme="dark"] .highlight .c1 { color: #8b949e; }
[data-theme="dark"] .highlight .cs { color: #8b949e; }
[data-theme="dark"] .highlight .gd { color: #ffa198; background-color: #490202; }
[data-theme="dark"] .highlight .ge { color: #e4e4e4; }
[data-theme="dark"] .highlight .gr { color: #ffa198; }
[data-theme="dark"] .highlight .gh { color: #79c0ff; }
[data-theme="dark"] .highlight .gi { color: #56d364; background-color: #0f5323; }
[data-theme="dark"] .highlight .go { color: #8b949e; }
[data-theme="dark"] .highlight .gp { color: #8b949e; }
[data-theme="dark"] .highlight .gs { font-weight: bold; }
[data-theme="dark"] .highlight .gu { color: #d2a8ff; }
[data-theme="dark"] .highlight .gt { color: #ff7b72; }
[data-theme="dark"] .highlight .kc { color: #79c0ff; }
[data-theme="dark"] .highlight .kd { color: #ff7b72; }
[data-theme="dark"] .highlight .kn { color: #ff7b72; }
[data-theme="dark"] .highlight .kp { color: #79c0ff; }
[data-theme="dark"] .highlight .kr { color: #ff7b72; }
[data-theme="dark"] .highlight .kt { color: #ff7b72; }
[data-theme="dark"] .highlight .m { color: #79c0ff; }
[data-theme="dark"] .highlight .s { color: #a5d6ff; }
[data-theme="dark"] .highlight .na { color: #79c0ff; }
[data-theme="dark"] .highlight .nb { color: #ffa657; }
[data-theme="dark"] .highlight .nc { color: #f0883e; }
[data-theme="dark"] .highlight .no { color: #79c0ff; }
[data-theme="dark"] .highlight .nd { color: #d2a8ff; }
[data-theme="dark"] .highlight .ni { color: #ffa657; }
[data-theme="dark"] .highlight .ne { color: #f0883e; }
[data-theme="dark"] .highlight .nf { color: #d2a8ff; }
[data-theme="dark"] .highlight .nl { color: #79c0ff; }
[data-theme="dark"] .highlight .nn { color: #ff7b72; }
[data-theme="dark"] .highlight .nt { color: #7ee787; }
[data-theme="dark"] .highlight .nv { color: #79c0ff; }
[data-theme="dark"] .highlight .ow { color: #ff7b72; }
[data-theme="dark"] .highlight .w { color: #e4e4e4; }
[data-theme="dark"] .highlight .mf { color: #79c0ff; }
[data-theme="dark"] .highlight .mh { color: #79c0ff; }
[data-theme="dark"] .highlight .mi { color: #79c0ff; }
[data-theme="dark"] .highlight .mo { color: #79c0ff; }
[data-theme="dark"] .highlight .sb { color: #a5d6ff; }
[data-theme="dark"] .highlight .sc { color: #a5d6ff; }
[data-theme="dark"] .highlight .sd { color: #a5d6ff; }
[data-theme="dark"] .highlight .s2 { color: #a5d6ff; }
[data-theme="dark"] .highlight .se { color: #79c0ff; }
[data-theme="dark"] .highlight .sh { color: #79c0ff; }
[data-theme="dark"] .highlight .si { color: #a5d6ff; }
[data-theme="dark"] .highlight .sx { color: #a5d6ff; }
[data-theme="dark"] .highlight .sr { color: #79c0ff; }
[data-theme="dark"] .highlight .s1 { color: #a5d6ff; }
[data-theme="dark"] .highlight .ss { color: #a5d6ff; }
[data-theme="dark"] .highlight .bp { color: #79c0ff; }
[data-theme="dark"] .highlight .vc { color: #79c0ff; }
[data-theme="dark"] .highlight .vg { color: #79c0ff; }
[data-theme="dark"] .highlight .vi { color: #79c0ff; }
[data-theme="dark"] .highlight .il { color: #79c0ff; }

/* Cards and containers */
.post-container,
.card {
  background-color: var(--card-bg);
}

/* Footer */
footer .copyright a {
  color: var(--link-hover);
}

/* Footer and Sidebar social icons - unified styles */
footer .list-inline li a,
.sidebar-container .list-inline li a {
  color: var(--text-color);
  transition: all 0.3s ease;
  display: inline-block;
}

footer .list-inline li a:hover,
footer .list-inline li a:focus,
.sidebar-container .list-inline li a:hover,
.sidebar-container .list-inline li a:focus {
  color: var(--link-hover);
  text-decoration: none;
}

/* Icon circles - light mode */
footer .list-inline li a .fa-circle,
.sidebar-container .list-inline li a .fa-circle {
  color: var(--text-color);
  transition: color 0.3s ease;
}

footer .list-inline li a:hover .fa-circle,
footer .list-inline li a:focus .fa-circle,
.sidebar-container .list-inline li a:hover .fa-circle,
.sidebar-container .list-inline li a:focus .fa-circle {
  color: var(--link-hover);
}

/* Icon inner icons - light mode */
footer .list-inline li a .fa-inverse,
.sidebar-container .list-inline li a .fa-inverse {
  color: var(--bg-color);
}

/* Dark mode icons */
[data-theme="dark"] footer .list-inline li a,
[data-theme="dark"] .sidebar-container .list-inline li a {
  color: var(--text-color);
}

[data-theme="dark"] footer .list-inline li a:hover,
[data-theme="dark"] footer .list-inline li a:focus,
[data-theme="dark"] .sidebar-container .list-inline li a:hover,
[data-theme="dark"] .sidebar-container .list-inline li a:focus {
  color: var(--link-hover);
}

[data-theme="dark"] footer .list-inline li a .fa-circle,
[data-theme="dark"] .sidebar-container .list-inline li a .fa-circle {
  color: var(--text-color);
}

[data-theme="dark"] footer .list-inline li a:hover .fa-circle,
[data-theme="dark"] footer .list-inline li a:focus .fa-circle,
[data-theme="dark"] .sidebar-container .list-inline li a:hover .fa-circle,
[data-theme="dark"] .sidebar-container .list-inline li a:focus .fa-circle {
  color: var(--link-hover);
}

[data-theme="dark"] footer .list-inline li a .fa-inverse,
[data-theme="dark"] .sidebar-container .list-inline li a .fa-inverse {
  color: var(--bg-color);
}

/* Sidebar social icons - size adapts to container */
.sidebar-container .list-inline li a .fa-stack {
  width: 2em;
  height: 2em;
  line-height: 2em;
  font-size: 1em;
}

.sidebar-container .list-inline li a .fa-stack .fa-stack-2x {
  font-size: 2em;
}

.sidebar-container .list-inline li a .fa-stack .fa-stack-1x {
  font-size: 1em;
  line-height: 2em;
}

/* Pager */
.pager li > a,
.pager li > span {
  background-color: var(--card-bg);
  color: var(--text-color);
}

.pager li > a:hover,
.pager li > a:focus {
  color: white;
  background-color: var(--link-hover);
  border-color: var(--link-hover);
}

/* Horizontal rules */
hr {
  border-color: var(--border-color);
}

/* Post preview */
.post-preview {
  border-bottom: 1px solid var(--border-color);
}

/* Forms */
.floating-label-form-group {
  border-bottom: 1px solid var(--border-color);
}

/* Tags */
.tags a {
  border: 1px solid var(--text-muted);
  color: var(--text-secondary);
}

.tags a:hover,
.tags a:active {
  border-color: var(--link-hover);
  color: var(--link-hover);
}

/* Theme toggle button in navbar - styled like nav links */
.theme-toggle-nav {
  display: flex;
  align-items: center;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: inline-block;
  text-transform: uppercase;
  font-size: 12px;
  line-height: 20px;
  font-weight: 800;
  letter-spacing: 1px;
  color: white;
  transition: all 0.3s ease;
  outline: none;
  user-select: none;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.theme-toggle:hover {
  background: none;
  color: rgba(255, 255, 255, 0.8);
}

.theme-toggle:active {
  background: rgba(0, 0, 0, 0.12);
}

.theme-toggle:focus {
  outline: none;
}

/* Desktop nav link style */
@media only screen and (min-width: 768px) {
  .theme-toggle {
    padding: 20px;
  }
}

/* Dark mode - theme toggle stays white at top */
[data-theme="dark"] .theme-toggle {
  color: white;
}

[data-theme="dark"] .theme-toggle:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* Theme text styles */
.theme-toggle span {
  transition: all 0.3s ease;
  display: inline;
}

.theme-separator {
  opacity: 0.6;
  margin: 0 2px;
}

/* Light mode - "明" is more prominent */
.theme-light {
  opacity: 1;
  font-weight: 800;
}

.theme-dark {
  opacity: 0.5;
  font-weight: 400;
}

/* Dark mode - "暗" is more prominent */
[data-theme="dark"] .theme-light {
  opacity: 0.5;
  font-weight: 400;
}

[data-theme="dark"] .theme-dark {
  opacity: 1;
  font-weight: 800;
}

/* When navbar is fixed (scrolled down) */
.navbar-custom.is-fixed .theme-toggle {
  color: var(--text-color) !important;
  text-shadow: none;
}

.navbar-custom.is-fixed .theme-toggle:hover {
  color: var(--link-hover) !important;
}

/* Mobile navbar adjustments */
@media only screen and (max-width: 767px) {
  .theme-toggle-nav {
    text-align: center;
    padding: 5px 0;
  }

  .theme-toggle {
    margin: 5px auto;
  }
}

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

/* Search functionality */
.search-toggle {
  display: flex;
  align-items: center;
}

.search-icon {
  color: white;
  padding: 20px 15px;
  display: block;
  transition: color 0.3s ease;
  text-decoration: none;
}

.search-icon:hover,
.search-icon:focus {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
}

.navbar-custom.is-fixed .search-icon {
  color: var(--text-color);
}

.navbar-custom.is-fixed .search-icon:hover,
.navbar-custom.is-fixed .search-icon:focus {
  color: var(--link-hover);
}

/* Search icon in header (left of toggle button) - mobile only */
.search-icon-header {
  padding: 15px;
  line-height: 20px;
  margin-right: 0;
  position: relative;
}

/* Ensure brand is on left, search and toggle are on right */
@media only screen and (max-width: 767px) {
  /* Remove right padding from container to allow toggle to touch screen edge */
  .navbar-custom .container-fluid {
    padding-right: 0;
  }

  .navbar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding-right: 0;
    margin-right: 0;
  }

  .navbar-header .navbar-brand {
    order: 1;
    flex: 0 0 auto;
    margin-left: 15px;
  }

  /* Group search and toggle together on the right */
  .navbar-header .search-icon-header {
    order: 2;
    float: none;
    flex: 0 0 auto;
    margin-left: auto;
    margin-right: 0;
    padding-right: 0;
  }

  .navbar-header .navbar-toggle {
    order: 3;
    margin-left: 0;
    margin-right: 0;
    flex: 0 0 auto;
    padding-right: 0;
    padding-left: 15px;
  }
}

@media only screen and (min-width: 768px) {
  .search-icon-header {
    display: none;
  }
}

/* Show search in header on mobile, hide in navbar */
@media only screen and (max-width: 767px) {
  .navbar-collapse .search-icon {
    display: none;
  }
  
  .search-icon-header {
    display: block;
  }
}

/* Search Modal */
.search-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.search-modal.active {
  display: block;
  opacity: 1;
}

.search-modal-content {
  background-color: var(--card-bg);
  margin: 5% auto;
  padding: 0;
  border: 1px solid var(--border-color);
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.search-modal.active .search-modal-content {
  transform: scale(1);
}

.search-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
}

.search-modal-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-color);
}

.search-modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-color);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s ease;
}

.search-modal-close:hover,
.search-modal-close:focus {
  color: var(--link-hover);
  outline: none;
}

.search-modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.search-input-wrapper {
  position: relative;
  margin-bottom: 20px;
}

.search-input {
  width: 100%;
  padding: 12px 40px 12px 15px;
  font-size: 16px;
  border: 2px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: border-color 0.3s ease;
  box-sizing: border-box;
}

.search-input:focus {
  outline: none;
  border-color: var(--link-hover);
}

.search-input-icon {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-results {
  min-height: 100px;
}

.search-results-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.search-result-item {
  display: block;
  padding: 15px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--text-color);
  text-decoration: none;
  transition: all 0.3s ease;
}

.search-result-item:hover,
.search-result-item:focus {
  border-color: var(--link-hover);
  background-color: var(--code-bg);
  text-decoration: none;
  transform: translateX(4px);
}

.search-result-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 8px;
}

.search-result-item:hover .search-result-title,
.search-result-item:focus .search-result-title {
  color: var(--link-hover);
}

.search-result-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.search-result-content {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.search-result-item mark {
  background-color: var(--link-hover);
  color: var(--bg-color);
  padding: 2px 4px;
  border-radius: 2px;
  font-weight: 600;
}

.search-no-results {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 16px;
}

/* Mobile adjustments */
@media only screen and (max-width: 767px) {
  .search-modal-content {
    width: 95%;
    margin: 10% auto;
    max-height: 85vh;
  }

  .search-icon {
    padding: 15px 10px;
  }

  .navbar-collapse .search-icon {
    color: var(--text-color);
  }

  .navbar-collapse .search-icon:hover,
  .navbar-collapse .search-icon:focus {
    color: var(--link-hover);
  }
}