/* Main CSS for Simone Vagnoni's personal website */

:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --light-color: #ecf0f1;
  --dark-color: #2c3e50;
  --text-color: #333;
  --text-light: #ecf0f1;
  --font-main: 'Roboto', sans-serif;
  --font-heading: 'Montserrat', sans-serif;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--light-color);
}

a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: var(--transition);
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: 2rem 0;
  position: relative;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.profile-image {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid var(--secondary-color);
  margin-bottom: 1.5rem;
}

.header-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.header-subtitle {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  opacity: 0.9;
}

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

.social-links a {
  color: var(--text-light);
  font-size: 1.5rem;
}

.social-links a:hover {
  color: var(--secondary-color);
}

/* Navigation */
nav {
  background-color: var(--secondary-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-list a {
  color: var(--text-light);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 4px;
}

.nav-list a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Sections */
section {
  padding: 4rem 0;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--primary-color);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background-color: var(--secondary-color);
  margin: 0.5rem auto;
}

/* About Section */
.about-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

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

.project-card {
  background-color: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.project-content {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.project-description {
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

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

.project-tag {
  background-color: var(--light-color);
  color: var(--primary-color);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
}

/* Publications Section */
.publications-list {
  max-width: 800px;
  margin: 0 auto;
}

.publication-item {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #ddd;
}

.publication-item:last-child {
  border-bottom: none;
}

.publication-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.publication-authors {
  font-style: italic;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.publication-venue {
  font-weight: 500;
  margin-bottom: 0.5rem;
}

/* Experience Section */
.experience-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background-color: var(--secondary-color);
}

.timeline-item {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--secondary-color);
}

.timeline-date {
  font-weight: 500;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
}

.timeline-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.timeline-organization {
  font-style: italic;
  margin-bottom: 0.5rem;
}

/* Education Section */
.education-list {
  max-width: 800px;
  margin: 0 auto;
}

.education-item {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid #ddd;
}

.education-item:last-child {
  border-bottom: none;
}

.education-degree {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.education-institution {
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.education-date {
  font-style: italic;
  margin-bottom: 0.5rem;
}

/* Contact Section */
.contact-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.contact-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.contact-icon {
  font-size: 2rem;
  color: var(--secondary-color);
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: 2rem 0;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  color: var(--text-light);
}

.footer-copyright {
  margin-top: 1rem;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-title {
    font-size: 2rem;
  }
  
  .nav-list {
    gap: 1rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-links {
    flex-direction: column;
    gap: 1.5rem;
  }
}