/* ========================================
   Jinxin Zhou - Personal Website Styles
   Modeled after tianyuding.com
   ======================================== */

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Georgia', serif;
  line-height: 1.4;
  color: #333;
  scroll-behavior: smooth;
  background-color: #fff;
}

html {
  scroll-behavior: smooth;
}

a {
  color: #527bbd;
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: #2a4a8c;
}

/* ========================================
   Navigation Bar
   ======================================== */
.navbar {
  position: sticky;
  top: 0;
  background-color: #ffffff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  padding: 15px 0;
  z-index: 1000;
  width: 100%;
  border-bottom: 1px solid #f0f0f0;
}

.nav-container {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.nav-logo {
  font-weight: bold;
  font-size: 1.2em;
  color: #527bbd;
  text-decoration: none;
}

.nav-logo:hover {
  color: #2a4a8c;
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-links a {
  color: #555;
  text-decoration: none;
  transition: color 0.3s;
  font-size: 0.9em;
  position: relative;
  padding-bottom: 2px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: #527bbd;
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: #527bbd;
}

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

/* ========================================
   Main Content Layout
   ======================================== */
#layout-content {
  max-width: 960px;
  margin: 25px auto 0;
  padding: 0 20px;
}

/* ========================================
   Profile Section
   ======================================== */
.profile-container {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-bottom: 1.5em;
}

.profile-info {
  flex: 2;
}

.profile-info h1 {
  font-size: 1.8em;
  margin-bottom: 0.2em;
  color: #333;
}

.profile-info h3 {
  font-size: 1.1em;
  color: #555;
  font-weight: normal;
  margin-bottom: 0.8em;
}

.profile-info p {
  line-height: 1.6;
  margin-bottom: 0.5em;
  color: #444;
}

.profile-image {
  flex: 1;
  text-align: center;
}

.profile-photo {
  max-width: 270px;
  border-radius: 5px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.profile-photo:hover {
  transform: scale(1.03);
}

.social-links {
  margin-top: 10px;
}

.social-link {
  color: #527bbd;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.social-link:hover {
  color: #2a4a8c;
  border-bottom: 1px solid;
}

/* ========================================
   Section Headings
   ======================================== */
h2 {
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  padding-bottom: 0.3em;
  border-bottom: 2px solid #eaeaea;
  color: #333;
  font-size: 1.4em;
}

/* ========================================
   Biography
   ======================================== */
.bio-text p {
  margin-bottom: 0.8em;
  line-height: 1.5;
}

/* ========================================
   Education & Experience Lists
   ======================================== */
.info-list {
  list-style: none;
  padding-left: 0;
}

.info-list li {
  margin-bottom: 1em;
  padding: 10px 12px;
  border-radius: 5px;
  transition: all 0.2s ease-out;
  line-height: 1.4;
}

.info-list li:hover {
  background: linear-gradient(to right, #f0f5ff, #fafcff);
  transform: translateX(3px);
  border-left: 3px solid #b8d0ff;
  padding-left: 9px;
  box-shadow: 0 2px 8px rgba(66, 133, 244, 0.05);
}

.info-list .institution {
  font-weight: bold;
  color: #2a4a8c;
}

.info-list .location {
  color: #777;
  margin-left: 10px;
}

.info-list .degree {
  display: inline;
  margin-top: 2px;
  color: #444;
}

.info-list .date {
  color: #888;
  font-style: italic;
  float: right;
}

/* ========================================
   Publication & Preprint Lists
   ======================================== */
.pub-list {
  padding-left: 25px;
  counter-reset: none;
}

.pub-list li {
  margin-bottom: 10px;
  padding: 8px;
  border-radius: 5px;
  border-bottom: 1px dotted #eaeaea;
  transition: all 0.2s ease-out;
  line-height: 1.3;
}

.pub-list li:hover {
  background: linear-gradient(to right, #f0f5ff, #fafcff);
  border-left: 5px solid #b8d0ff;
  box-shadow: 0 5px 15px rgba(66, 133, 244, 0.07);
  transform: translateX(5px);
  padding: 8px;
  margin-left: -8px;
}

.pub-list li a:first-of-type {
  font-weight: 500;
  color: #2a4a8c;
  text-decoration: none;
  transition: color 0.3s;
}

.pub-list li a:first-of-type:hover {
  color: #3498DB;
  text-decoration: underline;
}

.pub-venue {
  color: #E74C3C;
  display: inline;
}

.pub-authors {
  display: block;
  margin-top: 3px;
  line-height: 1.2;
}

/* ========================================
   Buttons (pdf, code, arXiv, etc.)
   ======================================== */
.button {
  font-family: Georgia, serif;
  background-color: #D6EAF8;
  border: none;
  color: #022b6d;
  padding: 4px 10px;
  text-decoration: none;
  display: inline-block;
  font-size: 0.88em;
  margin: 2px 2px;
  border-radius: 4px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.button:hover {
  background-color: #AED6F1;
  transform: translateY(-2px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.button a {
  color: #022b6d;
  text-decoration: none !important;
}

.button:hover a {
  text-decoration: none !important;
}

.button3 {
  background-color: #F1948A;
  color: white;
}

.button3:hover {
  background-color: #E74C3C;
}

.button4 {
  background-color: #D6EAF8;
  font-size: 0.85em;
}

.button4:hover {
  background-color: #AED6F1;
}

.button5 {
  background-color: #5DADE2;
  color: white;
}

.button5:hover {
  background-color: #3498DB;
}

/* ========================================
   Services & Plain Lists
   ======================================== */
.plain-list {
  list-style: none;
  padding-left: 0;
}

.plain-list li {
  margin-bottom: 0.5em;
  line-height: 1.3;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.plain-list li:hover {
  background: linear-gradient(to right, #f0f5ff, #fafcff);
  border-left: 3px solid #b8d0ff;
  transform: translateX(3px);
  box-shadow: 0 2px 8px rgba(66, 133, 244, 0.05);
}

.plain-list li a {
  text-decoration: none;
  transition: color 0.2s ease;
}

.plain-list li a:hover {
  color: #527bbd;
  border-bottom: 1px dotted #527bbd;
}

/* ========================================
   Visitor Map & Counter
   ======================================== */
.visitor-section {
  text-align: center;
  margin: 10px 0 20px;
}

#clustrmaps-container {
  margin: 10px auto;
  text-align: center;
}

.visit-counter {
  margin-top: 15px;
  text-align: center;
}

.visit-counter img {
  height: 24px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  margin-top: 30px;
  padding: 15px 0;
  border-top: 1px solid #eaeaea;
  text-align: center;
  font-size: 0.9em;
  color: #777;
}

.footer-content {
  max-width: 600px;
  margin: 0 auto;
}

.footer p {
  margin: 5px 0;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: 10px;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .profile-container {
    flex-direction: column-reverse;
    text-align: center;
  }

  .profile-image {
    margin-bottom: 20px;
  }

  .info-list .location,
  .info-list .date {
    float: none;
    display: block;
  }
}

/* ========================================
   Utility
   ======================================== */
.clearfix::after {
  content: "";
  display: table;
  clear: both;
}

p {
  margin-bottom: 0.5em;
  line-height: 1.3;
}

sup {
  font-size: 0.75em;
}