/* Base */
:root {
  --bg: #f5f6f7;
  --card: #ffffff;
  --text: #111;
  --muted: #666;
  --line: #e2e5e9;
  --link: #0645ad;
  --link-visited: #0b3ea0; /* avoid purple per preference */
  --accent: #f0f3f7;
  --accent-ink: #0b3d3a;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  overflow-y: scroll; /* Force scrollbar to always be present */
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", Ubuntu, "Droid Sans", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.35;
  font-size: 15px;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
a:visited { color: var(--link-visited); }

.wrap { max-width: 90%; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { position: relative; border-bottom: 1px solid var(--line); }
.banner { position: relative; width: 100%; height: 130px; }
.banner-img { width: 100%; height: 100%; object-fit: cover; object-position: center center; opacity: 0.5; }
.header-content { position: relative; background: var(--bg); padding: 12px 0; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; padding: 8px 24px; gap: 16px; }
.brand-title { font-weight: 800; letter-spacing: 0.08em; color: #111; }
.brand-sub { color: var(--muted); font-size: 12px; margin-top: 2px; }
.main-nav { display: flex; gap: 6px; flex-wrap: wrap; }
.nav-link { background: var(--accent); border: 1px solid var(--line); padding: 6px 10px; font-size: 13px; cursor: pointer; }
.nav-link.active { background: #fff; border-color: #b9c2cf; }

.ticker { display: flex; gap: 8px; align-items: center; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; margin: 16px auto 8px; max-width: 90%; padding: 0 24px; }
.ticker-label { background: #e9eef5; color: #2a3b57; font-weight: 600; padding: 4px 8px; font-size: 12px; border-right: 1px solid var(--line); }
.ticker-track { overflow: hidden; white-space: nowrap; padding: 4px 8px; }
.ticker-item { display: inline-block; padding-left: 8px; color: var(--muted); font-size: 13px; }

/* Layout */
.container { display: grid; grid-template-columns: 320px 1fr 400px; gap: 12px; max-width: 90%; margin: 12px auto; padding: 0 24px; }
.sidebar-left, .content, .sidebar-right { min-height: 200px; }

.box { background: var(--card); border: 1px solid var(--line); }
.box + .box { margin-top: 12px; }
.box-hd { background: #f7f9fc; border-bottom: 1px solid var(--line); padding: 8px 10px; font-weight: 700; font-size: 13px; letter-spacing: 0.05em; }
.box-bd { padding: 10px; }
.small { font-size: 13px; color: #222; }
.mini { font-size: 12px; color: var(--muted); }
.sep { color: #bcc5d3; margin: 0 6px; }

/* Headlines */
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.search { width: 100%; padding: 8px 10px; border: 1px solid var(--line); background: #fff; font-size: 14px; }
.filters { display: flex; gap: 10px; font-size: 12px; color: var(--muted); }
.filter input { vertical-align: middle; }

.headline-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.headline { background: var(--card); border: 1px solid var(--line); padding: 10px; }
.meta { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.badge { background: #edf2f7; color: #2a3b57; padding: 2px 6px; border: 1px solid #d9e2ec; font-size: 11px; font-weight: 700; }
.date { color: var(--muted); }
.title-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.title-with-star { display: inline-flex; align-items: center; gap: 6px; }
.title { margin: 4px 0 2px; font-size: 16px; line-height: 1.25; }
.highlight-star { color: #f59e0b; font-size: 14px; line-height: 1; }
.ext-link { font-size: 12px; border: 1px solid var(--line); padding: 4px 8px; background: #fff; }
.sub { color: #333; font-size: 13px; margin-bottom: 4px; }
.summary { color: #222; font-size: 13px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.tag { background: #f8fafc; border: 1px solid var(--line); padding: 2px 6px; font-size: 11px; color: #2a3b57; }

.highlight-section {
  background: #fafbfc;
  border: 1px solid var(--line);
  padding: 10px;
  margin-bottom: 10px;
}

.highlight-header {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* Category columns */
.category-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.dense-list { display: grid; gap: 8px; }
.dense-item { display: grid; grid-template-columns: 70px 1fr; align-items: baseline; gap: 10px; font-size: 13px; }
.dense-title { color: #111; }
.dense-item .ext-link { margin-left: 6px; }
.dense-title:hover { text-decoration: underline; }

/* Left */
.profile-photo { text-align: center; margin-bottom: 10px; }
.profile-img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; border: 2px solid var(--line); }
.profile-name { font-weight: 700; margin-bottom: 6px; text-align: center; }
.profile-links { font-size: 13px; }

/* Affiliation */
.affiliation-logos {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}

.affiliation-link {
  text-decoration: none;
  color: inherit;
  display: block;
  transition: transform 0.2s ease;
}

.affiliation-link:hover {
  transform: translateY(-2px);
}

.affiliation-logo {
  width: 200px; /* larger for rectangular logos */
  height: auto; /* preserve aspect ratio */
  max-width: 100%;
  object-fit: contain;
  border-radius: 6px;
  background: transparent; /* avoid shrinking visual area with padding background */
  padding: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.affiliation-logo:hover {
  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
  transform: translateY(-1px);
}

/* Skills Container */
.skills-container {
  position: static;
}

.skills-scroll-area {
  max-height: 500px;
  overflow-y: auto;
  padding-right: 8px;
}

.skills-scroll-area::-webkit-scrollbar {
  width: 6px;
}

.skills-scroll-area::-webkit-scrollbar-track {
  background: var(--accent);
  border-radius: 3px;
}

.skills-scroll-area::-webkit-scrollbar-thumb {
  background: color-mix(in srgb, #0ea5a0 40%, var(--line));
  border-radius: 3px;
}

.skills-scroll-area::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, #0ea5a0 60%, var(--line));
}


.experience-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 4px 0;
}

.experience-item {
  display: flex;
  align-items: flex-end;
  gap: 12px;
}

.experience-bar-container {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  width: 100%;
}

.experience-bar {
  position: relative;
  width: 12px;
  min-height: 40px;
  background: var(--accent);
  border: 1px solid var(--line);
  border-radius: 6px 6px 0 0;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.experience-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  border-radius: 5px 5px 0 0;
  transition: height 0.8s ease;
}

.experience-info {
  flex: 1;
  min-width: 0;
}

.experience-year {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 2px;
  font-weight: 600;
}

.experience-skills {
  font-size: 13px;
  color: var(--text);
  line-height: 1.3;
}

/* Hover effects */
.experience-item:hover .experience-bar {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.experience-item:hover .experience-year {
  color: #0ea5a0;
}

/* Mobile responsive */
@media (max-width: 900px) {
  .skills-scroll-area {
    max-height: 400px;
  }

  .experience-bar-container {
    gap: 6px;
  }

  .experience-bar {
    width: 10px;
    min-height: 30px;
  }

  .experience-year {
    font-size: 10px;
  }

  .experience-skills {
    font-size: 12px;
  }
}

/* Right */
.year-row { display: grid; grid-template-columns: 70px 1fr; gap: 8px; padding: 4px 0; border-bottom: 1px dotted #d7dbe2; }
.year { font-weight: 700; color: #2a3b57; }
.skills { color: #222; }
.edu-item { padding: 4px 0; border-bottom: 1px dotted #d7dbe2; }

/* Footer */
.site-footer { margin: 16px 0 24px; color: var(--muted); font-size: 12px; }
.site-footer .wrap { display: flex; gap: 8px; align-items: center; justify-content: center; }

.back-to-top {
  background: var(--accent);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  transition: all 0.2s ease;
  margin-left: 16px;
  white-space: nowrap;
}

.back-to-top:hover {
  background: #fff;
  border-color: #b9c2cf;
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Project Detail View */
.project-detail {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 20px;
  width: 100%;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--line);
}

.back-btn {
  background: var(--accent);
  border: 1px solid var(--line);
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text);
}

.back-btn:hover {
  background: #fff;
  border-color: #b9c2cf;
}

.project-meta {
  display: flex;
  gap: 8px;
  align-items: center;
}

.project-content {
  width: 100%;
  max-width: none;
}

.project-title {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 8px 0;
  color: var(--text);
}

.project-subtitle {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 24px;
}

.project-images {
  margin: 24px 0;
  width: 100%;
}

.project-main-image {
  width: 100%;
  max-width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin: 0 auto;
  display: block;
}

.image-placeholder {
  background: #f8fafc;
  border: 2px dashed var(--line);
  border-radius: 8px;
  padding: 40px;
  text-align: center;
  margin-bottom: 20px;
}

.placeholder-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.placeholder-icon {
  font-size: 32px;
  opacity: 0.5;
}

.placeholder-text {
  color: var(--muted);
  font-size: 14px;
}

.project-description {
  width: 100%;
}

.project-description h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px 0;
  color: var(--text);
}

.project-description p {
  margin-bottom: 16px;
  line-height: 1.6;
  color: #222;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.project-tags .tag {
  background: #f8fafc;
  border: 1px solid var(--line);
  padding: 4px 8px;
  font-size: 12px;
  color: #2a3b57;
  border-radius: 4px;
}

.achievements-list {
  margin: 0 0 20px 0;
  padding-left: 20px;
}

.achievements-list li {
  margin-bottom: 8px;
  color: #222;
  line-height: 1.5;
}

/* Clickable project items */
.headline.clickable {
  cursor: pointer;
  transition: all 0.2s ease;
}

.headline.clickable:hover {
  background: #f8fafc;
  border-color: #b9c2cf;
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Project type background colors */
.headline.clickable[data-project-type="Academic"] {
  background: #f0f9f0;
  border-left: 3px solid #22c55e;
}

.headline.clickable[data-project-type="Software"] {
  background: #f0f9ff;
  border-left: 3px solid #0ea5e9;
}

.headline.clickable[data-project-type="Academic"]:hover {
  background: #e8f5e8;
}

.headline.clickable[data-project-type="Software"]:hover {
  background: #e0f2fe;
}

/* Markdown Content Styling */
.markdown-content {
  margin-top: 24px;
  line-height: 1.6;
  color: var(--text);
  width: 100%;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
  margin: 24px 0 12px 0;
  font-weight: 600;
  color: var(--text);
}

.markdown-content h1 { font-size: 24px; }
.markdown-content h2 { font-size: 20px; }
.markdown-content h3 { font-size: 18px; }
.markdown-content h4 { font-size: 16px; }

.markdown-content p {
  margin-bottom: 16px;
  line-height: 1.6;
}

.markdown-content ul,
.markdown-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.markdown-content li {
  margin-bottom: 8px;
  line-height: 1.5;
}

.markdown-content img {
  max-width: 80%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin: 16px auto;
  display: block;
}

/* Image captions styling */
.markdown-content p em {
  display: block;
  text-align: center;
  font-size: 13px;
  color: #666;
  font-style: normal;
  margin: 8px auto 20px auto;
  padding: 12px 16px;
  background: #fafbfc;
  border: 1px solid #e1e5e9;
  border-radius: 8px;
  font-weight: 700;
  position: relative;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  max-width: 80%;
  width: fit-content;
}

.markdown-content p em::before {
  content: "↑";
  margin-right: 6px;
  opacity: 0.6;
}

.markdown-content blockquote {
  border-left: 4px solid #0ea5a0;
  padding-left: 16px;
  margin: 16px 0;
  color: var(--muted);
  font-style: italic;
}

.markdown-content code {
  background: #f8fafc;
  border: 1px solid var(--line);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 13px;
}

.markdown-content pre {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  margin: 16px 0;
}

.markdown-content pre code {
  background: none;
  border: none;
  padding: 0;
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}

.markdown-content th,
.markdown-content td {
  border: 1px solid var(--line);
  padding: 8px 12px;
  text-align: left;
}

.markdown-content th {
  background: #f8fafc;
  font-weight: 600;
}

/* Loading State */
.loading-content {
  text-align: center;
  padding: 40px;
  color: var(--muted);
}

.loading-spinner {
  font-size: 14px;
}

/* Image Zoom Modal */
.image-zoom-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.image-zoom-overlay.active {
  opacity: 1;
  visibility: visible;
}

.image-zoom-container {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  cursor: default;
}

.image-zoom-container img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.image-zoom-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #333;
  transition: background 0.2s ease;
}

.image-zoom-close:hover {
  background: rgba(255, 255, 255, 1);
}

/* Images in content areas can have hover effects, but affiliation logos are handled separately */

/* Responsive */
@media (max-width: 1200px) {
  .container { grid-template-columns: 280px 1fr 360px; }
}

@media (max-width: 900px) {
  .container { grid-template-columns: 1fr; }
  .headline-list { grid-template-columns: 1fr; }
  .project-header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .project-title {
    font-size: 20px;
  }
  
  .markdown-content {
    margin-top: 16px;
  }
  
  .markdown-content h1 { font-size: 20px; }
  .markdown-content h2 { font-size: 18px; }
  .markdown-content h3 { font-size: 16px; }
}