/* =====================================================
   DESIGN SYSTEM TOKENS
   ===================================================== */
:root {
  /* Brand */
  --cardinal:            #990000;
  --cardinal-hover:      #750014;
  --cardinal-light:      #ffeaed;
  --cardinal-muted:      #c94060;
  --cardinal-dark:       #3d0007;

  /* Neutral scale */
  --gray-50:  #f9f9f9;
  --gray-100: #f1f1f1;
  --gray-200: #e5e5e5;
  --gray-400: #b0b0b0;
  --gray-500: #8a8b8c;
  --gray-700: #4a4a4a;
  --gray-900: #1a1a1a;

  /* Semantic tokens — light mode */
  --text:             var(--gray-900);
  --text-muted:       var(--gray-500);
  --background:       #ffffff;
  --surface:          var(--gray-50);
  --border:           var(--gray-200);
  --link:             var(--cardinal);
  --link-hover:       var(--cardinal-hover);

  /* Dark mode tokens */
  --night-text:        #e8e8e8;
  --night-text-muted:  #8a8a8a;
  --night-background:  #111214;
  --night-surface:     #1c1e21;
  --night-border:      #2c2e33;
  --night-link:        #f4979f;

  /* Layout */
  --page-width:        780px;
  --border-radius:     8px;
  --border-radius-sm:  4px;

  /* Typography */
  --font-size:         15px;
  --line-height:       1.7;
  --name-font-size:    2rem;
  --section-title-font-size: 1.15rem;

  /* Transitions */
  --transition: 0.2s ease;
}

/* =====================================================
   FONTS
   ===================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

@font-face {
  font-family: 'Lato';
  src: url('../fonts/lato/Lato-Regular.woff2') format('woff2');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Lato';
  src: url('../fonts/lato/Lato-Bold.woff2') format('woff2');
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

/* =====================================================
   RESET & BASE
   ===================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Lato', 'Helvetica Neue', Arial, sans-serif;
  font-size: var(--font-size);
  line-height: var(--line-height);
  color: var(--text);
  background: var(--background);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition), color var(--transition);
}

[data-bs-theme=dark] body {
  color: var(--night-text);
  background: var(--night-background);
}

/* =====================================================
   LAYOUT
   ===================================================== */
body .container,
body .container-fluid {
  max-width: var(--page-width);
  padding-left: 20px;
  padding-right: 20px;
}

body .row {
  margin-left: 0;
  margin-right: 0;
  padding-left: 0;
  padding-right: 0;
}

.col-wrapper {
  padding-left: 10px;
  padding-right: 10px;
}

.sec-wrapper {
  margin-top: 44px;
}

.section-head {
  margin-top: 0;
  margin-bottom: 6px;
}

.section-item {
  margin-top: 20px;
}

/* =====================================================
   TYPOGRAPHY
   ===================================================== */
.section-title {
  font-size: var(--section-title-font-size);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--cardinal);
}

[data-bs-theme=dark] .section-title {
  color: var(--night-text);
  border-bottom-color: var(--night-link);
}

.section-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
}

[data-bs-theme=dark] .section-sub {
  color: var(--night-text-muted);
}

/* =====================================================
   LINKS
   ===================================================== */
a {
  color: var(--link);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--link-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
}

[data-bs-theme=dark] a {
  color: var(--night-link);
}

[data-bs-theme=dark] a:hover {
  color: #ffffff;
}

.highlight {
  color: var(--cardinal);
  font-weight: 600;
}

[data-bs-theme=dark] .highlight {
  color: var(--night-link);
}

/* =====================================================
   THEME TOGGLE
   ===================================================== */
.theme-toggle-btn {
  background: none;
  border: none;
  font-size: 16px;
  padding: 4px 6px;
  border-radius: var(--border-radius-sm);
  vertical-align: middle;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
  cursor: pointer;
}

.theme-toggle-btn:hover {
  color: var(--text);
  background: var(--gray-100);
}

[data-bs-theme=dark] .theme-toggle-btn {
  color: var(--night-text-muted);
}

[data-bs-theme=dark] .theme-toggle-btn:hover {
  color: var(--night-text);
  background: var(--night-surface);
}

.theme-toggle-btn:focus,
.theme-toggle-btn:active {
  outline: none;
  box-shadow: none;
  border: none;
}

/* =====================================================
   HOME / HERO
   ===================================================== */
.home-wrapper {
  padding-top: 48px;
  padding-bottom: 12px;
}

.home-wrapper .picture {
  margin-right: 8px;
}

.home-wrapper .picture img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.10);
  transition: box-shadow var(--transition), transform var(--transition);
}

.home-wrapper .picture img:hover {
  box-shadow: 0 8px 32px rgba(153,0,0,0.18);
  transform: scale(1.03);
}

[data-bs-theme=dark] .home-wrapper .picture img {
  border-color: var(--night-border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.home-wrapper .description {
  margin-top: 0;
}

.home-wrapper .description .name {
  font-size: var(--name-font-size);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

[data-bs-theme=dark] .home-wrapper .description .name {
  color: var(--night-text);
}

.home-wrapper .email {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.home-wrapper .email div {
  line-height: 1.5;
}

[data-bs-theme=dark] .home-wrapper .email {
  color: var(--night-text-muted);
}

.home-wrapper .email a {
  color: var(--text-muted);
}

[data-bs-theme=dark] .home-wrapper .email a {
  color: var(--night-text-muted);
}

.home-wrapper .email a:hover {
  color: var(--cardinal);
}

[data-bs-theme=dark] .home-wrapper .email a:hover {
  color: var(--night-link);
}

.home-wrapper .social {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.home-wrapper .social a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  font-size: 0.82rem;
  font-weight: 500;
  border-radius: 20px;
  border: 1.5px solid var(--border);
  color: var(--text);
  background: var(--surface);
  transition: border-color var(--transition), background var(--transition), color var(--transition), transform var(--transition);
  text-decoration: none;
}

.home-wrapper .social a:hover {
  border-color: var(--cardinal);
  color: var(--cardinal);
  background: var(--cardinal-light);
  transform: translateY(-1px);
  text-decoration: none;
}

[data-bs-theme=dark] .home-wrapper .social a {
  border-color: var(--night-border);
  color: var(--night-text);
  background: var(--night-surface);
}

[data-bs-theme=dark] .home-wrapper .social a:hover {
  border-color: var(--night-link);
  color: var(--night-link);
  background: rgba(244,151,159,0.08);
}

/* =====================================================
   BIO
   ===================================================== */
.bio-wrapper {
  line-height: 1.75;
}

.bio-wrapper p {
  margin: 0;
  color: var(--gray-700);
}

[data-bs-theme=dark] .bio-wrapper p {
  color: var(--night-text);
}

.bio-wrapper .read-more-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 1px dashed var(--gray-400);
  text-decoration: none;
}

.bio-wrapper .read-more-link:hover {
  color: var(--cardinal);
  border-bottom-color: var(--cardinal);
  text-decoration: none;
}

/* =====================================================
   INTERESTS — pill tags
   ===================================================== */
.interests-wrapper {
}

.interest-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.interest-tags li {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 20px;
  background: var(--cardinal-light);
  color: var(--cardinal-dark);
  border: 1.5px solid transparent;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  cursor: default;
}

.interest-tags li:hover {
  border-color: var(--cardinal);
  transform: translateY(-2px);
}

[data-bs-theme=dark] .interest-tags li {
  background: rgba(244,151,159,0.1);
  color: var(--night-link);
  border-color: rgba(244,151,159,0.2);
}

[data-bs-theme=dark] .interest-tags li:hover {
  background: rgba(244,151,159,0.18);
  border-color: var(--night-link);
}

/* =====================================================
   PUBLICATIONS / RESEARCH
   ===================================================== */
.pub-wrapper .section-item {
  padding: 16px;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.pub-wrapper .section-item:hover {
  border-color: var(--border);
  background: var(--surface);
}

[data-bs-theme=dark] .pub-wrapper .section-item:hover {
  border-color: var(--night-border);
  background: var(--night-surface);
}

.pub-wrapper a {
  color: var(--text);
  transition: color var(--transition);
}

.pub-wrapper a:hover {
  color: var(--cardinal);
  text-decoration: none;
}

[data-bs-theme=dark] .pub-wrapper a {
  color: var(--night-text);
}

[data-bs-theme=dark] .pub-wrapper a:hover {
  color: var(--night-link);
}

.pub-wrapper .title a {
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--text);
}

[data-bs-theme=dark] .pub-wrapper .title a {
  color: var(--night-text);
}

.pub-wrapper .authors {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.pub-wrapper .authors a {
  color: var(--text-muted);
}

.pub-wrapper .authors a:hover {
  color: var(--cardinal);
}

[data-bs-theme=dark] .pub-wrapper .authors {
  color: var(--night-text-muted);
}

[data-bs-theme=dark] .pub-wrapper .authors a {
  color: var(--night-text-muted);
}

.pub-wrapper .authors me {
  font-weight: 600;
  color: var(--gray-700);
}

[data-bs-theme=dark] .pub-wrapper .authors me {
  color: var(--night-text);
}

.pub-wrapper .link {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 0.82rem;
}

.pub-wrapper .link a {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.pub-wrapper .link a:hover {
  border-color: var(--cardinal);
  color: var(--cardinal);
  background: var(--cardinal-light);
  text-decoration: none;
}

[data-bs-theme=dark] .pub-wrapper .link a {
  border-color: var(--night-border);
  color: var(--night-text-muted);
  background: var(--night-surface);
}

[data-bs-theme=dark] .pub-wrapper .link a:hover {
  border-color: var(--night-link);
  color: var(--night-link);
  background: rgba(244,151,159,0.08);
}

.pub-wrapper .link .venue {
  font-weight: 600;
  color: var(--cardinal);
  font-size: 0.82rem;
  padding: 0;
  border: none;
  background: none;
}

[data-bs-theme=dark] .pub-wrapper .link .venue {
  color: var(--night-link);
}

.pub-wrapper .figure img {
  width: 160px;
  max-width: 100%;
  border-radius: var(--border-radius);
  object-fit: cover;
  transition: opacity var(--transition);
}

.pub-wrapper .figure img:hover {
  opacity: 0.9;
}

@media (max-width: 767.98px) {
  .pub-wrapper .figure {
    margin-bottom: 12px;
  }
  .pub-wrapper .figure img {
    width: 100%;
    max-width: 220px;
  }
}

/* =====================================================
   EXPERIENCE
   ===================================================== */
.exp-wrapper {
}

.experience-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  padding: 16px;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  margin-bottom: 4px;
  transition: border-color var(--transition), background var(--transition);
}

.experience-item:hover {
  border-color: var(--border);
  background: var(--surface);
}

[data-bs-theme=dark] .experience-item:hover {
  border-color: var(--night-border);
  background: var(--night-surface);
}

/* override bootstrap grid for experience */
.experience-item .col-md-2,
.experience-item .col-sm-3,
.experience-item .col-4 {
  padding: 0;
  flex: none;
  width: auto;
}

.experience-item .col-md-10,
.experience-item .col-sm-9,
.experience-item .col-8 {
  padding: 0;
}

.experience-item img {
  width: 70px;
  height: 70px;
  object-fit: contain;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border);
  padding: 4px;
  background: var(--surface);
}

[data-bs-theme=dark] .experience-item img {
  border-color: var(--night-border);
  background: var(--night-surface);
  filter: brightness(0.9);
}

.exp-icon-placeholder {
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border);
  background: var(--cardinal-light);
  color: var(--cardinal);
  font-size: 1.8rem;
}

[data-bs-theme=dark] .exp-icon-placeholder {
  background: rgba(244,151,159,0.1);
  border-color: rgba(244,151,159,0.2);
  color: var(--night-link);
}

.experience-item .exp-role {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

[data-bs-theme=dark] .experience-item .exp-role {
  color: var(--night-text);
}

.experience-item .exp-org {
  font-size: 0.88rem;
  margin-top: 2px;
}

.experience-item .exp-org a {
  color: var(--cardinal);
  font-weight: 500;
}

[data-bs-theme=dark] .experience-item .exp-org a {
  color: var(--night-link);
}

.experience-item .exp-org a:hover {
  text-decoration: underline;
}

.experience-item .exp-period {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 3px;
  display: inline-block;
  background: var(--gray-100);
  padding: 1px 8px;
  border-radius: 10px;
}

[data-bs-theme=dark] .experience-item .exp-period {
  color: var(--night-text-muted);
  background: var(--night-surface);
}

.experience-item .exp-desc {
  font-size: 0.875rem;
  margin-top: 8px;
  color: var(--gray-700);
  line-height: 1.6;
}

[data-bs-theme=dark] .experience-item .exp-desc {
  color: var(--night-text);
  opacity: 0.85;
}

.experience-item .exp-desc ul {
  margin: 4px 0 0 0;
  padding-left: 1.25rem;
}

.experience-item .exp-desc ul li {
  margin-bottom: 4px;
}

.experience-item p {
  margin: 0;
}

/* =====================================================
   EDUCATION
   ===================================================== */
.exp-wrapper .title a {
  font-weight: 600;
  color: var(--text);
}

[data-bs-theme=dark] .exp-wrapper .title a {
  color: var(--night-text);
}

.exp-wrapper a {
  color: var(--text);
  transition: color var(--transition);
}

.exp-wrapper a:hover {
  color: var(--cardinal);
  text-decoration: none;
}

[data-bs-theme=dark] .exp-wrapper a {
  color: var(--night-text);
}

[data-bs-theme=dark] .exp-wrapper a:hover {
  color: var(--night-link);
}

.exp-wrapper .info {
  font-size: 0.875rem;
  color: var(--text-muted);
}

[data-bs-theme=dark] .exp-wrapper .info {
  color: var(--night-text-muted);
}

.exp-wrapper .time {
  text-align: right;
  font-size: 0.82rem;
  color: var(--text-muted);
}

[data-bs-theme=dark] .exp-wrapper .time {
  color: var(--night-text-muted);
}

.exp-wrapper .location {
  font-size: 0.82rem;
  color: var(--text-muted);
}

[data-bs-theme=dark] .exp-wrapper .location {
  color: var(--night-text-muted);
}

@media (max-width: 767.98px) {
  .exp-wrapper .time {
    text-align: left;
  }
  .exp-wrapper .location {
    display: none;
  }
  .experience-item {
    grid-template-columns: 60px 1fr;
    gap: 12px;
  }
  .experience-item img,
  .exp-icon-placeholder {
    width: 56px;
    height: 56px;
  }
}

/* =====================================================
   BIBTEX SNIPPET
   ===================================================== */
.snippet {
  position: relative;
  background: var(--gray-100);
  font-size: 12px;
  line-height: 1.5;
  margin-top: 10px;
  margin-bottom: 0;
  border-radius: var(--border-radius-sm);
  padding: 10px 12px;
  overflow: hidden;
}

[data-bs-theme=dark] .snippet {
  background: var(--night-surface);
}

.snippet .btn {
  transition: opacity var(--transition), border-color var(--transition);
  opacity: 0.9;
  padding: 1px 6px;
  position: absolute;
  right: 6px;
  top: 6px;
  font-size: 13px;
  line-height: 21px;
  background-color: var(--background);
  border: 1.5px solid var(--border);
  border-radius: var(--border-radius-sm);
  color: var(--text-muted);
}

[data-bs-theme=dark] .snippet .btn {
  background-color: var(--night-background);
  border-color: var(--night-border);
  color: var(--night-text-muted);
}

.snippet .btn:hover {
  opacity: 1;
  border-color: var(--cardinal);
  color: var(--cardinal);
}

[data-bs-theme=dark] .snippet .btn:hover {
  border-color: var(--night-link);
  color: var(--night-link);
}

.snippet code {
  display: block;
  overflow-x: auto;
  white-space: pre;
  padding-right: 28px;
}

/* =====================================================
   REPRESENTATIVE / HIGHLIGHT PAPERS
   ===================================================== */
.representative {
  background-color: var(--cardinal-light);
  border-radius: var(--border-radius-sm);
}

[data-bs-theme=dark] .representative {
  background-color: rgba(153,0,0,0.12);
}

/* =====================================================
   FOOTER
   ===================================================== */
footer.citation {
  margin-top: 48px;
  margin-bottom: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text-muted);
}

[data-bs-theme=dark] footer.citation {
  border-top-color: var(--night-border);
  color: var(--night-text-muted);
}

footer.citation p {
  margin-bottom: 2px;
}

footer.citation a {
  color: var(--text-muted);
}

footer.citation a:hover {
  color: var(--cardinal);
}

[data-bs-theme=dark] footer.citation a {
  color: var(--night-text-muted);
}

[data-bs-theme=dark] footer.citation a:hover {
  color: var(--night-link);
}

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 767.98px) {
  body {
    font-size: 15px;
  }
  .home-wrapper {
    padding-top: 28px;
  }
  .home-wrapper .picture img {
    width: 110px;
    height: 110px;
  }
  .home-wrapper .description .name {
    font-size: 1.5rem;
  }
  .sec-wrapper {
    margin-top: 32px;
  }
}