/* Custom CSS for Nicholas Waytowich's Bio Site */

/* Import modern font stack */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --primary-color: #1542a4;
  --primary-dark: #0f256e;
  --primary-light: #286ad3;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --bg-card: #ffffff;
  --bg-hover: #f9fafb;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --transition: all 0.3s ease;
}

/* Base typography improvements */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.7;
  color: var(--text-primary);
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  background: #000000; /*linear-gradient(135deg, var(--primary-color), var(--primary-light));*/
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2rem;
  color: var(--text-primary);
  border-bottom: 3px solid var(--primary-color);
  padding-bottom: 0.5rem;
  margin-top: 3rem;
}

h3 {
  font-size: 1.5rem;
  color: var(--primary-dark);
}

/* Navigation Menu */
.nav-menu {
  display: flex;
  gap: 1.5rem;
  margin: 2rem 0;
  padding: 0;
  list-style: none;
  border-bottom: 2px solid var(--border-color);
}

.nav-menu li {
  display: inline-block;
}

.nav-menu a {
  display: block;
  padding: 0.75rem 1.25rem;
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  border-bottom: 3px solid transparent;
  transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  background-color: var(--bg-hover);
}

/* About section improvements */
.about-section {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--primary-color);
}

/* Publication cards */
.publication {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.publication:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--primary-light);
}

.publication strong {
  color: var(--primary-dark);
  font-size: 1.1rem;
  display: block;
  margin-bottom: 0.5rem;
}

.publication a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.publication a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Projects/Portfolio Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

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

.project-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.project-card h3 {
  margin-top: 0;
  color: var(--primary-dark);
}

.project-card p {
  color: var(--text-secondary);
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.project-tag {
  background: var(--bg-hover);
  color: var(--primary-dark);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
}

.project-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.project-links a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border: 1px solid var(--primary-color);
  border-radius: 6px;
  transition: var(--transition);
}

.project-links a:hover {
  background: var(--primary-color);
  color: white;
}

/* Social icons enhancement */
header a img {
  transition: var(--transition);
  border-radius: 8px;
  opacity: 0.8;
}

header a img:hover {
  opacity: 1;
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

/* Profile image enhancement */
header img[alt="Logo"] {
  border-radius: 50%;
  border: 4px solid var(--primary-color);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

header img[alt="Logo"]:hover {
  transform: scale(1.05);
}

/* Links styling */
a {
  color: var(--primary-color);
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

/* Code blocks (if any) */
code {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  background: var(--bg-hover);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--primary-dark);
}

/* Improved spacing */
section {
  padding: 1rem 0;
}

/* Responsive improvements */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .nav-menu {
    flex-direction: column;
    gap: 0;
  }

  .nav-menu a {
    border-left: 3px solid transparent;
    border-bottom: none;
  }

  .nav-menu a:hover,
  .nav-menu a.active {
    border-left-color: var(--primary-color);
    border-bottom-color: transparent;
  }
}

/* Auto-update badge (for publications section) */
.auto-updated {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary-light);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-left: 1rem;
}

.auto-updated::before {
  content: "🔄";
}

/* Last updated timestamp */
.last-updated {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-style: italic;
  margin-top: 0.5rem;
}

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

/* Loading animation for auto-update */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.updating {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}