/* Modern Minimalist Academic Website Styles */

:root {
  /* Modern Dark Theme Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #808080;
  --accent-primary: #ff6b47;
  --accent-secondary: #ffa726;
  --accent-tertiary: #42a5f5;
  --border-color: #333333;
  --success-color: #66bb6a;
  --warning-color: #ffa726;
  
  /* Typography */
  --font-primary: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, monospace;
  --font-serif: 'Crimson Text', Georgia, serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Borders */
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 18px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  margin: 0;
  padding: 0;
  font-size: 18px;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; margin-bottom: var(--space-lg); }
h2 { font-size: 2rem; margin-bottom: var(--space-lg); }
h3 { font-size: 1.5rem; margin-bottom: var(--space-md); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  max-width: 85ch;
  width: 100%;
}

/* Links */
a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: all 0.2s ease;
  position: relative;
}

a:hover {
  color: var(--accent-secondary);
}

a:not(.button):not(.nav-link)::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: -2px;
  left: 0;
  background-color: var(--accent-primary);
  transition: width 0.3s ease;
}

a:not(.button):not(.nav-link):hover::after {
  width: 100%;
}

/* Modern Container */
.modern-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Content Container */
.container.wrapper {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container.wrapper.post {
  max-width: 1000px;
}

.markdown {
  width: 100%;
  max-width: 100%;
}

/* Hero Section */
.hero-section {
  padding: var(--space-lg) 0 var(--space-3xl) 0;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-xl);
  align-items: center;
  justify-items: start;
}

.hero-text h1 {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  font-weight: 400;
}

.hero-image {
  position: relative;
  justify-self: start;
  margin-left: -20px;
}

.hero-image img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--accent-primary);
  box-shadow: var(--shadow-xl);
  transition: transform 0.3s ease;
}

.hero-image img:hover {
  transform: scale(1.05);
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

/* Content Sections */
.content-section {
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--border-color);
}

.content-section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 2rem;
  margin-bottom: var(--space-xl);
  position: relative;
  padding-left: var(--space-md);
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
  border-radius: 2px;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

/* Cards */
.card {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-primary);
}

.card:hover::before {
  transform: scaleX(1);
}

/* Modern Collapsible */
.modern-collapsible {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--space-md);
  overflow: hidden;
  transition: all 0.3s ease;
}

.modern-collapsible-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  cursor: pointer;
  background: var(--bg-secondary);
  transition: all 0.2s ease;
  border: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
  width: 100%;
  text-align: left;
}

.modern-collapsible-header:hover {
  background: var(--bg-tertiary);
}

.modern-collapsible-icon {
  transition: transform 0.3s ease;
  color: var(--accent-primary);
}

.modern-collapsible.active .modern-collapsible-icon {
  transform: rotate(180deg);
}

.modern-collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: var(--bg-primary);
}

.modern-collapsible-content-inner {
  padding: var(--space-lg);
  border-top: 1px solid var(--border-color);
}

/* Email Box */
.email-container {
  display: inline-flex;
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-left: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.email-container:hover {
  border-color: var(--accent-primary);
  background: var(--bg-tertiary);
}

/* Modern Quotes */
.modern-quote {
  background: var(--bg-secondary);
  border-left: 4px solid var(--accent-primary);
  border-radius: var(--border-radius-md);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
  position: relative;
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.6;
}

.modern-quote::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: var(--space-lg);
  font-size: 4rem;
  color: var(--accent-primary);
  opacity: 0.3;
  font-family: var(--font-serif);
}

.modern-quote-author {
  text-align: right;
  margin-top: var(--space-md);
  font-weight: 600;
  color: var(--accent-primary);
  font-style: normal;
}

/* News/Updates List */
.news-list {
  list-style: none;
  padding: 0;
}

.news-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.news-item:hover {
  border-color: var(--accent-primary);
  transform: translateX(4px);
}

.news-item-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-primary);
  margin-top: 8px;
  flex-shrink: 0;
}

.news-item-content {
  flex: 1;
}

/* Emoji Styling */
.emoji {
  font-size: 1.2em;
  margin: 0 var(--space-xs);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-xl);
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .action-buttons {
    justify-content: center;
  }
  
  .modern-container {
    padding: 0 var(--space-md);
  }
  
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .email-container {
    margin-left: 0;
    margin-top: var(--space-md);
  }
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Focus styles for accessibility */
*:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Selection styling */
::selection {
  background: var(--accent-primary);
  color: white;
}

/* Theme Compatibility Fixes */
.post .markdown {
  max-width: none !important;
}

/* Original theme collapsible button compatibility */
button.collapsible {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  font-weight: 500;
  cursor: pointer;
  padding: 12px 18px;
  width: auto;
  max-width: 280px;
  border: none;
  text-align: left;
  outline: none;
  font-size: 14px;
  border-radius: 8px;
  transition: all 0.3s ease;
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
}

.active, button.collapsible:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

button.collapsible:after {
  content: '\002B';
  color: white;
  font-weight: bold;
  float: right;
  margin-left: 5px;
}

.active:after {
  content: "\2212";
}

.content {
  padding: 0 18px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-out;
  background-color: var(--bg-secondary);
  border-radius: 10px;
  margin-bottom: 20px;
}

/* Pagination Styling */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: var(--space-2xl) 0;
  gap: var(--space-md);
}

.pagination-previous,
.pagination-next {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

.pagination-previous:hover,
.pagination-next:hover {
  border-color: var(--accent-primary);
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.pagination-previous[disabled],
.pagination-next[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-xs);
}

.pagination-link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s ease;
  min-width: 40px;
  text-align: center;
}

.pagination-link:hover {
  border-color: var(--accent-primary);
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.pagination-link.is-current {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

/* Social Media Icons - Make them bigger and add spacing */
.header .site-description nav ul {
  display: flex;
  gap: 15px;
  align-items: center;
}

.header .site-description nav ul li {
  margin: 0 !important;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 24px;
}

.header .site-description nav ul a {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 24px;
  width: 24px;
}

.header .site-description nav ul svg {
  max-height: 24px !important;
  width: 24px;
  transition: all 0.2s ease;
  display: block;
}

.header .site-description nav ul svg:hover {
  transform: scale(1.1);
  opacity: 0.8;
}

/* Fix Google Scholar icon size - it uses different styling */
.header .site-description nav ul a[href*="scholar"] {
  font-size: 24px !important;
  line-height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

/* Custom Bluesky icon - Dark theme compatible */
.header .site-description nav ul a[href*="bsky.app"] svg {
  display: none;
}

.header .site-description nav ul a[href*="bsky.app"]::after {
  content: "";
  display: block;
  width: 24px;
  height: 24px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 568 501' fill='%23ddd'%3E%3Cpath d='M123.121 33.664C188.241 82.553 258.281 181.68 284 234.873c25.719-53.192 95.759-152.32 160.879-201.209C491.866-1.611 568-28.906 568 57.947c0 17.346-9.945 145.713-15.778 166.555-20.275 72.453-94.155 90.933-159.875 79.748C507.222 323.8 536.444 388.56 473.333 453.32c-119.86 122.992-172.272-30.859-185.702-70.281-2.462-7.227-3.614-10.608-3.631-7.733-.017-2.875-1.169.506-3.631 7.733-13.43 39.422-65.842 193.273-185.702 70.281-63.111-64.76-33.889-129.52 80.986-149.07-65.72 11.185-139.6-7.295-159.875-79.748C9.945 203.66 0 75.293 0 57.947 0-28.906 76.134-1.611 123.121 33.664Z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  background-color: transparent !important;
  border: none !important;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.header .site-description nav ul a[href*="bsky.app"] {
  background: none !important;
  background-color: transparent !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.header .site-description nav ul a[href*="bsky.app"]:hover::after {
  transform: scale(1.1);
  opacity: 0.8;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-secondary);
}

/* KaTeX Math Styling for Dark Theme */
.katex {
  color: var(--text-primary) !important;
  font-size: 1.1em;
}

.katex-display {
  margin: 1.5rem 0 !important;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.5rem 0;
}

/* Consistent white/light coloring for all math elements */
.katex .base,
.katex .mord,
.katex .mop,
.katex .mbin,
.katex .mrel,
.katex .mopen,
.katex .mclose,
.katex .mpunct,
.katex .minner {
  color: var(--text-primary) !important;
}

/* Clean equation numbering without background */
.katex-display .katex .tag {
  color: var(--text-muted) !important;
  background: none !important;
  background-color: transparent !important;
  border: none !important;
  position: absolute;
  right: 0;
  padding: 0 !important;
  margin: 0 !important;
}

/* Remove any default KaTeX tag styling */
.katex .tag {
  background: none !important;
  background-color: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

/* Scrollable math on mobile */
@media (max-width: 768px) {
  .katex-display {
    overflow-x: auto;
    text-align: left;
    padding: 0.5rem;
  }
}