/* stylesheet.css — Academic website for Dr. Chao YIN */
/* Style modeled after jonbarron.github.io */

body {
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 14px;
  background-color: #ffffff;
  color: #000000;
  margin: 0;
  padding: 0;
}

table {
  font-size: 14px;
}

a:link {
  color: #1772d0;
  text-decoration: none;
}

a:visited {
  color: #1772d0;
  text-decoration: none;
}

a:active {
  color: #f09228;
  text-decoration: none;
}

a:hover {
  color: #f09228;
  text-decoration: none;
}

/* Name header */
.name {
  font-size: 32px;
  font-weight: bold;
  text-align: center;
  margin: 0;
  padding: 0;
}

/* Paper title */
.papertitle {
  font-size: 14px;
  font-weight: bold;
}

/* Section headings */
h2 {
  font-size: 18px;
  font-weight: bold;
  color: #333333;
  border-bottom: 1px solid #cccccc;
  padding-bottom: 4px;
  margin-top: 24px;
  margin-bottom: 12px;
}

h3 {
  font-size: 15px;
  font-weight: bold;
  color: #444444;
  margin-top: 18px;
  margin-bottom: 8px;
}

/* Paper thumbnail hover — scale-up animation */
.one {
  width: 160px;
  height: 120px;
  position: relative;
  overflow: visible;
  z-index: 1;
}
.one:hover {
  z-index: 10;
}
.two {
  display: none; /* overlay disabled; scale animation used instead */
}

/* Publication thumbnail image */

/* News list */
.news-item {
  margin-bottom: 6px;
  font-size: 14px;
}

.news-date {
  font-weight: bold;
  color: #555555;
}

/* Link bar */
.links {
  margin-top: 12px;
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 14px;
}

.links a,
.links .wechat {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

/* Inline icon (contact bar + publication links) */
.ico {
  width: 15px;
  height: 15px;
  vertical-align: middle;
}

/* WeChat: custom tooltip on hover showing WeChat ID */
.links .wechat {
  color: #1772d0;
  cursor: default;
  position: relative;
}
.links .wechat::after {
  content: "WeChat ID: ychaoonline";
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: #fff;
  padding: 4px 9px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.links .wechat:hover::after {
  opacity: 1;
}

/* Publication highlight note */
.pub-highlight {
  background: #ffffd0;
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: normal;
}

/* Footer */
.footer {
  text-align: center;
  font-size: 12px;
  color: #999999;
  margin-top: 30px;
  margin-bottom: 20px;
}

/* Award highlight */
.award-highlight {
  color: #cc0000;
  font-weight: bold;
}

/* Citation style */
.citation-title {
  font-weight: bold;
}

.citation-venue {
  font-style: italic;
}

/* Mobile responsive */
@media screen and (max-width: 820px) {
  body {
    font-size: 16px;
  }

  table {
    font-size: 16px;
  }

  .name {
    font-size: 28px;
  }

  h2 {
    font-size: 20px;
  }
}

/* Photo gallery with dot-switcher */
.photo-gallery {
  display: inline-block;
  text-align: center;
}

.photo-frame {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  overflow: hidden;
  display: block;
  margin: 0 auto;
}

.gallery-photo {
  width: 300px;
  height: 300px;
  object-fit: cover;
  border-radius: 50%;
  transition: opacity 0.2s ease;
  display: block;
}

.gallery-dots {
  margin-top: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.gdot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #cccccc;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  border: none;
  display: inline-block;
}

.gdot:hover {
  background: #999999;
  transform: scale(1.2);
}

.gdot.active {
  background: #1772d0;
  transform: scale(1.15);
}

@media screen and (max-width: 820px) {
  .photo-frame,
  .gallery-photo {
    width: 220px;
    height: 220px;
  }
}

/* Publication thumbnail image */
.paper-thumb {
  width: 160px;
  height: 120px;
  object-fit: cover;
  border: 1px solid #dddddd;
  border-radius: 4px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  transform-origin: center center;
  display: block;
}
.one:hover .paper-thumb {
  transform: scale(1.3);
  box-shadow: 0 6px 20px rgba(0,0,0,0.28);
}

/* Venue label styling */
.venue-label {
  font-size: 12px;
  background-color: #f0f0f0;
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: 4px;
  color: #666666;
}

/* Publication heading note + Google Scholar note */
.h3-note {
  font-size: 12px;
  font-weight: normal;
  color: #888888;
}

.pub-note {
  font-size: 13px;
  color: #555555;
  margin: 0 0 8px 0;
}

/* Publication link row (DOI / Code / BibTeX) */
.pub-links {
  margin: 4px 0;
  font-size: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 12px;
}

.pub-links a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

/* GitHub star count badge */
.stars {
  font-size: 11px;
  color: #b8860b;
  margin-left: -6px;
}

/* BibTeX box (hidden until toggled) */
.bibtex-box {
  display: none;
  position: relative;
  margin: 4px 0 8px 0;
  background-color: #f7f7f7;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
}

.bibtex-box pre {
  margin: 0;
  padding: 10px 12px;
  font-family: "Courier New", Courier, monospace;
  font-size: 11px;
  line-height: 1.4;
  color: #333333;
  white-space: pre-wrap;
  word-break: break-word;
}

.bib-copy {
  position: absolute;
  top: 6px;
  right: 6px;
  font-size: 11px;
  padding: 2px 8px;
  background-color: #ffffff;
  border: 1px solid #cccccc;
  border-radius: 3px;
  color: #1772d0;
  cursor: pointer;
}

.bib-copy:hover {
  background-color: #1772d0;
  color: #ffffff;
}

/* ===== Top navigation menu (Home / About / Blog / Industrial3D) ===== */
.topnav {
  text-align: center;
  margin: 4px 0 8px 0;
  padding: 8px 0;
  border-bottom: 1px solid #e0e0e0;
}

.topnav a {
  display: inline-block;
  margin: 2px 8px;
  padding: 4px 6px;
  font-size: 14px;
  font-weight: bold;
  color: #1772d0;
}

.topnav a:hover {
  color: #f09228;
}

.topnav a.active {
  color: #333333;
  border-bottom: 2px solid #f09228;
}

/* ===== Blog ===== */
.nav-top {
  font-size: 13px;
  margin: 14px 0 0 0;
}

.post-list {
  padding-left: 20px;
}

.post-list .news-item {
  margin-bottom: 14px;
}

.post-excerpt {
  font-size: 13px;
  color: #555555;
  margin-top: 2px;
}

.post {
  margin-top: 16px;
  line-height: 1.6;
}

.post-title {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 4px;
}

.post-meta {
  font-size: 13px;
  color: #888888;
  margin-top: 0;
  margin-bottom: 18px;
}

/* ===== Industrial3D project pages ===== */
.subnav {
  text-align: center;
  border-bottom: 1px solid #cccccc;
  padding-bottom: 8px;
  margin-bottom: 6px;
}

.subnav a {
  margin: 0 10px;
  font-size: 14px;
}

.subnav a.active {
  font-weight: bold;
  color: #f09228;
}

.hero-sub {
  text-align: center;
  font-size: 15px;
  color: #555555;
  margin-top: -4px;
}

.btn-row {
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 16px 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid #1772d0;
  border-radius: 5px;
  font-size: 13px;
}

.btn:hover {
  background-color: #1772d0;
  color: #ffffff;
}

.btn:hover .ico {
  filter: brightness(0) invert(1);
}

.stat-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin: 18px 0;
}

.stat {
  flex: 1 1 140px;
  min-width: 120px;
  text-align: center;
  background-color: #f7f7f7;
  border: 1px solid #e8e8e8;
  border-radius: 6px;
  padding: 12px 8px;
}

.stat .num {
  font-size: 26px;
  font-weight: bold;
  color: #1772d0;
}

.stat .label {
  font-size: 12px;
  color: #666666;
  margin-top: 2px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin: 10px 0;
}

.data-table th,
.data-table td {
  border: 1px solid #dddddd;
  padding: 6px 10px;
  text-align: left;
}

.data-table th {
  background-color: #f0f0f0;
}

/* ===================================================================
   RESPONSIVE LAYOUT (mobile + tablet)
   The site uses fixed-width table layouts (Jon Barron style). These
   rules make the 820px container fluid and let the header + paper
   rows stack vertically on narrow screens.
   =================================================================== */

/* The fixed-width outer container becomes fluid below 820px */
table[width="820"] {
  width: 100%;
  max-width: 820px;
  box-sizing: border-box;
}

img {
  max-width: 100%;
  height: auto;
}

/* Tablet and below: add side gutters so content is not flush to edges */
@media screen and (max-width: 820px) {
  body {
    padding: 0 14px;
  }
}

/* Phones and small tablets: stack the header and paper rows */
@media screen and (max-width: 768px) {

  /* Header row: photo on top, name/bio below */
  table[cellpadding="12"] tr {
    display: flex;
    flex-direction: column;
  }
  table[cellpadding="12"] td {
    display: block;
    width: 100% !important;
  }
  table[cellpadding="12"] td.photo-cell {
    order: -1;
    margin-bottom: 10px;
  }

  /* Publication rows: thumbnail centered on top, text below */
  table[cellpadding="8"] td {
    display: block;
    width: 100% !important;
  }
  table[cellpadding="8"] td[width="20%"] {
    text-align: center;
    margin-bottom: 8px;
  }
  table[cellpadding="8"] .one,
  table[cellpadding="8"] .two {
    margin: 0 auto;
  }

  /* Industrial3D data tables: allow horizontal scroll instead of overflow */
  .data-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}