@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --primary-color: #2F3C7E;
  --secondary-color: #FBEAEB;
  --text-main: #333333;
  --text-light: #666666;
  --bg-color: #ffffff;
  --bg-off: #f8f9fa;
  --link-color: #0066cc;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-main);
  background-color: var(--bg-color);
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  text-align: center;
  padding: 60px 0 40px;
}

h1.title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-color);
  line-height: 1.3;
}

.authors {
  font-size: 1.2rem;
  color: var(--text-main);
  margin-bottom: 15px;
}

.authors span {
  margin: 0 5px;
}

.affiliations {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 30px;
  font-style: italic;
}

.conference {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 20px;
  padding: 5px 15px;
  border-radius: 20px;
  background-color: var(--bg-off);
  display: inline-block;
}

.links {
  margin-top: 30px;
  display: flex;
  justify-content: center;
  gap: 15px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--text-main);
  color: white;
  text-decoration: none;
  border-radius: 25px;
  font-weight: 500;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn:hover {
  background-color: var(--primary-color);
  transform: translateY(-2px);
}

section {
  padding: 40px 0;
}

section.abstract {
  background-color: var(--bg-off);
  border-radius: 12px;
  padding: 40px;
  margin: 40px 0;
}

h2 {
  font-size: 1.8rem;
  color: var(--text-main);
  border-bottom: 2px solid #eaeaea;
  padding-bottom: 10px;
  margin-bottom: 25px;
}

p {
  margin-bottom: 20px;
  font-size: 1.1rem;
  text-align: justify;
}

figure {
  margin: 40px 0;
  text-align: center;
}

figure img {
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

figcaption {
  margin-top: 15px;
  font-size: 0.95rem;
  color: var(--text-light);
  text-align: justify;
  line-height: 1.5;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.two-col figure img {
  height: auto;
  max-height: 400px;
  object-fit: contain;
}

footer {
  text-align: center;
  padding: 40px 0;
  color: var(--text-light);
  border-top: 1px solid #eaeaea;
  margin-top: 60px;
}

footer p {
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 768px) {
  h1.title { font-size: 2rem; }
  .two-col { grid-template-columns: 1fr; }
  section.abstract { padding: 25px; }
}