/* Custom Color Scheme and Modern Improvements */

/* Updated color palette */
:root {
  --accent-color: #2563eb;
  --accent-hover: #1d4ed8;
  --link-visited: #7c3aed;
  --border-light: #e5e7eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
}

/* Links with modern accent color */
a {
  color: #2563eb;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:visited {
  color: #7c3aed;
}

a:hover {
  color: #1d4ed8;
}

a:focus {
  color: #1d4ed8;
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

/* Updated button colors */
.btn {
  background-color: #2563eb;
  border-color: #2563eb;
  transition: all 0.3s ease;
}

.btn:hover {
  background-color: #1d4ed8;
  border-color: #1d4ed8;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2);
}

.btn-success {
  background-color: #10b981;
  border-color: #10b981;
}

.btn-success:hover {
  background-color: #059669;
  border-color: #059669;
  color: #fff;
}

.btn-warning {
  background-color: #f59e0b;
  border-color: #f59e0b;
}

.btn-warning:hover {
  background-color: #d97706;
  border-color: #d97706;
  color: #fff;
}

.btn-danger {
  background-color: #ef4444;
  border-color: #ef4444;
}

.btn-danger:hover {
  background-color: #dc2626;
  border-color: #dc2626;
  color: #fff;
}

.btn-info {
  background-color: #06b6d4;
  border-color: #06b6d4;
}

.btn-info:hover {
  background-color: #0891b2;
  border-color: #0891b2;
  color: #fff;
}

/* Improved borders and spacing */
.top-navigation li {
  border-bottom: 1px solid #e5e7eb;
}

.top-navigation li a:hover {
  color: #2563eb;
}

/* Better visual hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: #1f2937;
  margin-bottom: 1rem;
}

/* Card-style elements */
article {
  background: #fff;
  border-radius: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Improved selection */
::-moz-selection {
  background-color: #bfdbfe;
  color: #1e40af;
  text-shadow: none;
}

::selection {
  background-color: #bfdbfe;
  color: #1e40af;
  text-shadow: none;
}

/* Author social links with accent color */
.author-social:hover {
  color: #2563eb !important;
}

/* Responsive improvements */
@media only screen and (max-width: 37.5em) {
  body {
    font-size: 16px;
    line-height: 1.6;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .navigation-wrapper {
    padding: 1em 0;
  }
}

/* Add subtle shadow to images */
article img {
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Improved code blocks */
pre, code {
  border-radius: 4px;
}

.highlight {
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Modern card styling */
.article-wrap {
  padding: 2em;
}

/* Project cards on homepage */
#index article,
#main article {
  padding: 1.5em;
  margin-bottom: 2em;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#index article:hover,
#main article:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Improved spacing and readability */
p {
  line-height: 1.7;
  margin-bottom: 1.5em;
}

/* Better list styling */
ul, ol {
  line-height: 1.7;
  margin-bottom: 1.5em;
}

li {
  margin-bottom: 0.5em;
}

/* Modern hr styling */
hr {
  border: none;
  border-top: 2px solid #e5e7eb;
  margin: 2em 0;
}

/* Bio photo styling */
.bio-photo {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.bio-photo:hover {
  transform: scale(1.05);
}

/* Improved navigation */
.site-name a {
  color: #1f2937;
  font-weight: bold;
  transition: color 0.2s ease;
}

.site-name a:hover {
  color: #2563eb;
}

/* Better footer styling */
.footer-wrap {
  background: #f9fafb;
  border-top: 1px solid #e5e7eb;
  margin-top: 3em;
}

/* Responsive grid improvements */
@media only screen and (max-width: 37.5em) {
  .article-wrap {
    padding: 1em;
  }

  #index article,
  #main article {
    padding: 1em;
  }

  /* Make homepage cards stack nicely on mobile */
  div[style*="grid"] {
    grid-template-columns: 1fr !important;
  }
}

/* Improved focus states for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

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

/* Better blockquote styling */
blockquote {
  padding: 1em 1.5em;
  margin-left: 0;
  border-left: 4px solid #2563eb;
  background: #f9fafb;
  border-radius: 4px;
}

/* Table improvements */
table {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

table th {
  background: #f3f4f6;
  color: #1f2937;
  font-weight: 600;
  padding: 0.75em;
}

table td {
  padding: 0.75em;
  border-bottom: 1px solid #e5e7eb;
}

table tr:last-child td {
  border-bottom: none;
}

/* Publication list improvements */
.publications li {
  padding: 1em;
  margin-bottom: 1em;
  background: #f9fafb;
  border-left: 3px solid #2563eb;
  border-radius: 4px;
}

/* Page title improvements */
.article-wrap h1:first-child {
  color: #1f2937;
  font-size: 2.5em;
  margin-bottom: 0.5em;
  padding-bottom: 0.3em;
  border-bottom: 3px solid #2563eb;
}

/* Homepage Hero Section */
.hero-section {
  margin-bottom: 2em;
}

.hero-title {
  font-size: 2.5em;
  margin-bottom: 0.5em;
  color: #1f2937;
}

.hero-subtitle {
  font-size: 1.2em;
  color: #6b7280;
  margin-bottom: 1.5em;
}

/* Expertise Grid */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1em;
  margin: 1.5em 0;
}

.expertise-card {
  padding: 1em;
  background: #f9fafb;
  border-radius: 4px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.expertise-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.expertise-card-ml {
  border-left: 3px solid #2563eb;
}

.expertise-card-ml strong {
  color: #2563eb;
}

.expertise-card-software {
  border-left: 3px solid #10b981;
}

.expertise-card-software strong {
  color: #10b981;
}

.expertise-card-data {
  border-left: 3px solid #f59e0b;
}

.expertise-card-data strong {
  color: #f59e0b;
}

.expertise-card-scientific {
  border-left: 3px solid #06b6d4;
}

.expertise-card-scientific strong {
  color: #06b6d4;
}

/* Call-to-Action Section */
.cta-section {
  text-align: center;
  margin-top: 2em;
  padding: 2em;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 8px;
  color: white;
}

.cta-section h3 {
  color: white;
  margin-bottom: 0.5em;
}

.cta-section p {
  margin-bottom: 1em;
}

.cta-button {
  display: inline-block;
  padding: 0.75em 2em;
  background: white;
  color: #667eea;
  border-radius: 4px;
  font-weight: bold;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  color: #667eea;
}