/* ============================= */
/* RESET & BODY */
/* ============================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Georgia", "Garamond", "Times New Roman", serif;
  background-color: #ffffff;
  color: #222;
  line-height: 1.7;
}

a {
  color: #000;
  text-decoration: none;
  position: relative;
}

main {
  max-width: 760px;
  margin: 80px auto;
  padding: 0 20px;
}

/* ============================= */
/* HEADER / NAVIGATION */
/* ============================= */
.site-header {
  border-bottom: 1px solid #e5e5e5;
  padding: 20px 0;
  background-color: #fafafa;
}

.nav-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.site-title a {
  font-variant: small-caps;
  letter-spacing: 1px;
  font-size: 20px;
  font-weight: bold;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 30px;
}

.nav-links a {
  font-size: 15px;
  color: #444;
  font-weight: 400;
  position: relative;
}

/* Hover underline */
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0%;
  height: 1px;
  background-color: #000;
  transition: width 0.3s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a:hover {
  color: #000;
}

/* Highlight CV link */
.nav-links a[href$=".pdf"],
.cv-link {
  font-weight: 600;
  font-variant: small-caps;
  letter-spacing: 0.8px;
}

.pdf-icon {
  font-size: 10px;
  margin-left: 6px;
  border: 1px solid #aaa;
  padding: 1px 4px;
  border-radius: 3px;
  letter-spacing: 0.5px;
  color: #555;
}

/* ============================= */
/* MOBILE NAVIGATION */
/* ============================= */
@media (max-width: 700px) {
  .nav-container {
    flex-direction: column;
    align-items: center;
  }

  .nav-links {
    flex-direction: column;
    gap: 10px;
    align-items: center;
  }
}

/* ============================= */
/* HERO SECTION */
/* ============================= */
.hero {
  margin-top: 60px;
  text-align: center;
  padding: 40px 20px;
  background-color: #f7f7f7;
  border-radius: 6px;
}

/* HERO IMAGE */
.hero-img {
  width: 150px; /* adjust size */
  height: 150px; /* make square */
  border-radius: 50%; /* circular image */
  object-fit: cover; /* crop nicely */
  display: block;
  margin: 0 auto 20px; /* center above name, add spacing */
  border: 3px solid #ccc; /* optional subtle border */
}

.hero h2 {
  font-size: 32px;
  font-variant: small-caps;
  letter-spacing: 1.2px;
  margin-bottom: 10px;
}

.hero p {
  color: #555;
  font-size: 18px;
}

/* ============================= */
/* SECTIONS & HEADINGS */
/* ============================= */
h2 {
  font-variant: small-caps;
  letter-spacing: 0.8px;
  font-size: 18px;
  margin-bottom: 10px;
  color: #111;
}

section {
  margin-bottom: 50px;
}

/* ============================= */
/* PUBLICATIONS PAGE */
/* ============================= */
.page-title {
  font-size: 28px;
  font-variant: small-caps;
  letter-spacing: 1.2px;
  margin-bottom: 40px;
  text-align: center;
}

.publication {
  margin-bottom: 35px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f0f0f0;
}

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

.publication h3 {
  font-size: 18px;
  font-variant: small-caps;
  letter-spacing: 0.5px;
  margin-bottom: 5px;
  font-weight: normal;
}

.pub-meta {
  font-size: 14px;
  color: #666;
  margin-bottom: 10px;
}

.abstract {
  font-size: 15px;
  color: #333;
  line-height: 1.6;
}

/* ============================= */
/* FOOTER */
/* ============================= */
footer {
  margin-top: 100px;
  padding: 40px 20px;
  border-top: 1px solid #e5e5e5;
  text-align: center;
  font-size: 14px;
  color: #777;
}

/* ============================= */
/* PUBLICATIONS / PREPRINTS MODERN STYLE */
/* ============================= */
.pub-section {
  padding: 40px 20px;
  border-radius: 8px;
  margin-bottom: 50px;
}

.publications {
  background-color: #f7faff; /* subtle blue for published papers */
  border-left: 6px solid #004080; /* blue accent */
}

.preprints {
  background-color: #fef9f0; /* subtle warm tone for preprints */
  border-left: 6px solid #ff8c00; /* orange accent */
}

.section-title {
  font-size: 24px;
  font-variant: small-caps;
  letter-spacing: 1.2px;
  margin-bottom: 25px;
  text-align: center;
  color: #004080; /* publications header color */
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.publication {
  background-color: #fff;
  border-left: 4px solid #004080;
  padding: 20px 25px;
  border-radius: 6px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s ease;
}

.preprints .publication {
  border-left-color: #ff8c00;
}

.publication:hover {
  transform: translateY(-3px);
}

.publication .authors {
  font-size: 14px;
  color: #555;
  margin-bottom: 6px;
}

.publication .title {
  font-size: 18px;
  font-variant: small-caps;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  color: #111;
}

.publication .journal {
  font-size: 14px;
  font-style: italic;
  color: #333;
  margin-bottom: 6px;
}

.publication .doi a {
  font-size: 14px;
  color: #004080;
  word-break: break-word;
}

.publication .doi a:hover {
  text-decoration: underline;
}

/* Responsive: stack properly on mobile */
@media (max-width: 700px) {
  .pub-list {
    flex-direction: column;
  }
}