/* Academic Homepage Styles - Based on enxinsong.com design */

/* ===== Base Reset & Typography ===== */
body, h1, h2, h3, h4, h5, h6, p, blockquote, pre, hr, dl, dd, ol, ul, figure {
  margin: 0;
  padding: 0;
}

body, html {
  height: 100%;
}

body {
  font-family: "Roboto", "Inter", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  font-weight: 300;
  color: #111;
  background-color: #f9f9f9;
  -webkit-text-size-adjust: 100%;
}

h1, h2, h3, h4, h5, h6, p, blockquote, pre, ul, ol, dl, figure, .highlight {
  margin-bottom: 15px;
}

img {
  max-width: 100%;
  vertical-align: middle;
}

ul, ol {
  margin-left: 30px;
}

li > ul, li > ol {
  margin-bottom: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 300;
}

a {
  color: #2a7ae2;
  text-decoration: none;
}

a:visited {
  color: #1756a9;
}

a:hover {
  color: #111;
  text-decoration: underline;
}

/* ===== Wrapper Container ===== */
.wrapper {
  max-width: calc(1024px - 60px);
  margin-right: auto;
  margin-left: auto;
  padding-right: 30px;
  padding-left: 30px;
}

@media screen and (max-width: 800px) {
  .wrapper {
    max-width: calc(1024px - 30px);
    padding-right: 15px;
    padding-left: 15px;
  }
}

.wrapper:after {
  content: "";
  display: table;
  clear: both;
}

/* ===== Site Header ===== */
.site-header {
  border-top: 3px solid #9b3022;
  border-bottom: 1px solid #e4eaf2;
  min-height: 36px;
  position: relative;
  background: #f9f9f9;
}

.site-title {
  font-size: 26px;
  font-weight: 400;
  font-family: 'Roboto', sans-serif;
  line-height: 56px;
  letter-spacing: -1px;
  margin-bottom: 0;
  float: left;
  color: #002336;
}

.site-nav {
  display: flex;
  justify-content: center;
  line-height: 36px;
  z-index: 3;
}

.site-nav .menu-icon {
  display: none !important;
}

/* Hide the greedy-nav hamburger button on desktop */
.greedy-nav button {
  display: none !important;
}

.site-nav .page-link {
  font-weight: 400;
  color: #002336;
  line-height: 1.5;
}

.site-nav .page-link:not(:first-child) {
  margin-left: 20px;
}

@media screen and (max-width: 600px) {
  .site-nav {
    position: absolute;
    top: 9px;
    right: 30px;
    background-color: #f9f9f9;
    border: 1px solid #e8e8e8;
    border-radius: 5px;
    text-align: right;
  }
  .site-nav .menu-icon {
    display: block;
    float: right;
    width: 36px;
    height: 26px;
    line-height: 0;
    padding-top: 10px;
    text-align: center;
  }
  .site-nav .trigger {
    clear: both;
    display: none;
  }
  .site-nav:hover .trigger {
    display: block;
    padding-bottom: 5px;
  }
  .site-nav .page-link {
    display: block;
    padding: 5px 10px;
  }
}

/* ===== Profile Card ===== */
.profile-section {
  position: relative;
  height: 550px;
  overflow: hidden;
}

.cover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #1a1a2e;
}

.bg-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center 80%;
  z-index: 0;
  transition: opacity 1.5s ease-in-out;
}

#bg-layer-1 {
  background-image: url('/images/stars-bg/star-01.jpg');
  opacity: 1;
  z-index: 1;
}

#bg-layer-2 {
  opacity: 0;
  z-index: 2;
}

@media screen and (max-width: 600px) {
  .profile-section {
    height: 580px;
  }
}

.profile-wrapper {
  border-radius: 25px;
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  background-color: #fff;
  z-index: 10;
}

@media screen and (max-width: 600px) {
  .profile-wrapper {
    top: 5%;
    width: calc(90% - 15px);
  }
}

.profile-col {
  float: left;
  margin: 30px auto;
  text-align: center;
}

.profile-col-1 {
  width: calc(40% - 15px);
}

.profile-col-2 {
  width: calc(60% - 15px);
}

@media screen and (max-width: 600px) {
  .profile-col {
    position: relative;
    margin: 10px auto;
    float: none;
    width: 100%;
  }
}

.circle-img {
  margin: 0 auto;
  width: 168px;
  border-width: 4px;
  border-style: solid;
  border-radius: 50%;
  border-color: #292929;
}

#my-name {
  font-size: 32px;
  font-weight: bold;
  color: #292929;
}

#my-title {
  font-size: 24px;
  color: #292929;
  font-weight: 200;
  margin-top: 14px;
}

@media screen and (max-width: 600px) {
  #my-title {
    display: none;
  }
}

/* ===== Social Icons ===== */
.icon-button {
  background-color: white;
  border-radius: 3.2rem;
  cursor: pointer;
  display: inline-block;
  font-size: 1.8rem;
  height: 3.2rem;
  line-height: 3rem;
  margin: 0 5px;
  position: relative;
  text-align: center;
  top: 25px;
  width: 3.2rem;
}

.icon-button span {
  border-radius: 0;
  display: block;
  height: 0;
  left: 50%;
  margin: 0;
  position: absolute;
  top: 50%;
  transition: all 0.3s;
  width: 0;
}

.icon-button:hover span {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 3.2rem;
  margin: -1.5rem;
}

.github span { background-color: #000; }
.linkedin span { background-color: #0077B5; }
.twitter span { background-color: #4099ff; }

.icon-button i {
  background: none;
  color: white;
  height: 3.2rem;
  left: 0;
  line-height: 3.2rem;
  position: absolute;
  top: 0;
  transition: all 0.3s;
  width: 3.2rem;
  z-index: 10;
}

.icon-button .icon-github { color: #000; }
.icon-button .icon-linkedin { color: #0077B5; }
.icon-button .icon-twitter { color: #4099ff; }

.icon-button:hover .icon-github,
.icon-button:hover .icon-linkedin,
.icon-button:hover .icon-twitter {
  color: white;
}

/* ===== Page Content ===== */
.page-content {
  padding: 30px 0;
}

/* ===== Bio Section ===== */
.bio {
  max-width: calc(100% - 15px);
  margin-top: 10px;
  margin-bottom: 10px;
  margin-left: auto;
  margin-right: auto;
}

.bio-body {
  margin: 5px;
  padding: 0;
}

.bio + .bio {
  margin-top: 56px;
}

.md-heading {
  font-size: 24px;
  font-weight: 400;
  color: #3b4a5c;
  letter-spacing: 0.04em;
}

.md-heading i {
  margin-right: 12px;
  color: #6c86ad;
}

.bio-highlight {
  margin-top: 12px;
  padding: 16px 20px;
  border-left: 3px solid #6c86ad;
  border-radius: 6px;
  background: #f6f8fc;
  color: #2f3a47;
  line-height: 1.6;
}

.bio-highlight a {
  color: #305d96;
  font-weight: 500;
}

.bio-highlight strong {
  display: block;
  margin-bottom: 6px;
  color: #223041;
}

/* ===== Timeline Styles ===== */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 18px;
  padding-left: 32px;
  border-left: 1.5px solid #e4eaf2;
}

.timeline-entry {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: flex-start;
}

.timeline-entry::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #6c86ad;
  box-shadow: 0 0 0 4px rgba(108, 134, 173, 0.2);
}

.timeline-entry__meta {
  flex: 0 0 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: #51606f;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.timeline-entry__time {
  font-size: 0.95rem;
}

.timeline-entry__logo {
  width: 80px;
  max-height: 80px;
  height: auto;
  object-fit: contain;
  filter: saturate(0.9);
  flex-shrink: 0;
}

#experiences .timeline-entry__logo,
#education .timeline-entry__logo {
  width: 170px;
  max-height: 170px;
}

.timeline-entry__logos {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  width: 100%;
  gap: 10px;
}

.timeline-entry__logo--small {
  width: 90px !important;
  max-height: 90px !important;
}

.timeline-entry__content {
  flex: 1 1 320px;
  min-width: 240px;
}

.timeline-entry__content h3 {
  margin: 0 0 8px;
  font-size: 1.22rem;
  color: #2f3a47;
  font-weight: 600;
}

.timeline-entry__role {
  margin: 0 0 6px;
  color: #6c86ad;
  font-weight: 600;
}

.timeline-entry__content p {
  margin: 0 0 6px;
  color: #515d6c;
}

@media screen and (max-width: 768px) {
  .timeline {
    padding-left: 24px;
  }
  .timeline-entry {
    gap: 12px;
  }
  .timeline-entry__meta {
    flex: 0 0 100%;
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }
  .timeline-entry__logo {
    width: 60px;
    max-height: 60px;
  }

  #experiences .timeline-entry__logo,
  #education .timeline-entry__logo {
    width: 120px;
    max-height: 120px;
  }
  .timeline-entry::before {
    left: -30px;
  }
}

/* ===== News List ===== */
.news-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.news-list__item {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid #edf1f7;
}

.news-list__item:first-child {
  padding-top: 0;
}

.news-list__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.news-list__date {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 86px;
  padding: 4px 14px;
  border-radius: 999px;
  background: #eef3fb;
  color: #51606f;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.news-list__text {
  flex: 1 1 280px;
  color: #394553;
  line-height: 1.6;
}

.news-list__text a {
  color: #305d96;
  font-weight: 500;
}

.news-list__text a:hover {
  color: #1f3f66;
}

/* ===== Publications ===== */
.publications {
  max-width: calc(100% - 15px);
  margin-top: 10px;
  font-family: 'Roboto', sans-serif;
}

.pub-list {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  overflow: auto;
}

.pub {
  display: flex;
  gap: 26px;
  align-items: flex-start;
  padding-bottom: 28px;
  border-bottom: 1px solid #e4eaf2;
}

.pub:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.pub-left {
  flex: 0 0 220px;
  text-align: left;
}

.pub-left > .intro-img {
  width: 100%;
  max-width: 220px;
  border-radius: 18px;
  border: 1px solid #e4eaf2;
  box-shadow: 0 16px 36px -28px rgba(38, 51, 70, 0.35);
}

.pub-right {
  flex: 1 1 320px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pub-right > .title {
  font-size: 1.28rem;
  font-weight: 600;
  color: #2f3a47;
  margin: 0;
}

.pub-right > .authors {
  color: #556477;
  line-height: 1.6;
}

.pub-right > .authors .author {
  color: #0077B5;
  font-weight: 400;
}

.pub-right > .publish {
  color: #68768a;
  font-weight: 500;
}

.pub-right > .publish > .publisher {
  color: #2f3a47;
}

@media screen and (max-width: 960px) {
  .pub {
    flex-direction: column;
  }
  .pub-left {
    flex: 0 0 auto;
  }
  .pub-right {
    width: 100%;
  }
}

/* ===== Tags ===== */
.tags {
  font-size: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.tags .tag {
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: #eef3fb;
  color: #305d96;
  text-decoration: none;
  font-weight: 500;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.tags .tag:hover {
  transform: translateY(-1px);
  background: #d9e4f6;
}

.tags .tag:visited {
  color: #305d96;
}

.tags img {
  height: 20px;
  opacity: 0.75;
}

/* ===== Awards List ===== */
.awards-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.awards-list li {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid #e4eaf2;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(28, 46, 69, 0.04);
}

.awards-list__year {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 14px;
  background: #303f55;
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
}

.awards-list__text {
  flex: 1;
  color: #2a3748;
  font-weight: 500;
  line-height: 1.5;
}

.awards-list__text a {
  color: #305d96;
  font-weight: 600;
}

/* ===== Info Cards ===== */
.info-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.info-card {
  padding: 20px;
  border: 1px solid #e4eaf2;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 6px 20px rgba(28, 46, 69, 0.06);
}

.info-card__eyebrow {
  margin: 0 0 10px;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #6c86ad;
  font-weight: 600;
}

.info-card__text,
.info-card__list {
  margin: 0;
  color: #364556;
  line-height: 1.6;
}

.info-card__list {
  padding-left: 18px;
}

.info-card__list li {
  margin-bottom: 6px;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid #e4eaf2;
  padding: 30px 0;
}

.footer-col-wrapper {
  font-size: 15px;
  color: #828282;
  margin-left: -15px;
}

.footer-col {
  float: left;
  margin-bottom: 15px;
  padding-left: 15px;
}

.contact-list {
  list-style: none;
  margin-left: 0;
}

/* ===== Hobbies Section ===== */
.hobbies-content {
  color: #515d6c;
  line-height: 1.8;
}

.hobbies-content p {
  margin-bottom: 12px;
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 2em;
  right: 0;
  text-decoration: none;
  color: #35DACA;
  background-color: rgba(235, 235, 235, 0.8);
  font-size: 16px;
  font-weight: bold;
  padding: 1em;
  display: none;
}

.back-to-top:hover {
  background-color: rgba(135, 135, 135, 0.5);
}