/* Academic one-pager — minimal static layout */

:root {
  --text: #222;
  --text-light: #555;
  --link: #1772d0;
  --border: #ddd;
  --max-width: 820px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background: #fff;
}

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

a:hover {
  text-decoration: underline;
}

/* Navigation */
nav.site-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.95rem;
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

nav.site-nav a {
  color: var(--text);
}

nav.site-nav a.active {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Hide Alumni nav until content is ready — delete this rule to show */
nav.site-nav a[href="alumni.html"] {
  display: none;
}

.nav-icons {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-shrink: 0;
}

.nav-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: var(--text-light);
  border-radius: 4px;
}

.nav-icons a:hover {
  color: var(--link);
  text-decoration: none;
  background: rgba(0, 0, 0, 0.04);
}

.nav-icons svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.nav-icons a.nav-scholar .scholar-mark {
  fill: #fff;
}

/* Main content */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem 3rem;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 1.25rem;
}

h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 1rem;
  text-transform: none;
}

h2 .subtle {
  float: right;
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-light);
}

hr.section {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* Intro */
.intro-table {
  width: 100%;
  border-collapse: collapse;
}

.intro-table td {
  vertical-align: top;
  padding: 0;
}

.intro-table .photo {
  width: 240px;
  padding-right: 1.5rem;
}

.intro-table img.profile {
  width: 220px;
  border-radius: 4px;
}

.intro-table .bio {
  font-size: 1rem;
}

.intro-table .bio p {
  margin: 0 0 0.85rem;
}

/* Project / publication rows */
.row-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  align-items: flex-start;
}

.row-item:last-child {
  margin-bottom: 0;
}

.row-item .thumb {
  flex: 0 0 100px;
}

.row-item .thumb img {
  width: 100px;
  height: 75px;
  object-fit: cover;
  border-radius: 3px;
  display: block;
}

.row-item .thumb img.contain {
  object-fit: contain;
  background: #f5f5f5;
}

.row-item .body .title {
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.row-item .body .meta {
  color: var(--text-light);
  font-style: italic;
  margin-bottom: 0.35rem;
}

.row-item .body .links {
  font-size: 0.92rem;
  margin: 0;
}

.row-item .body .links a {
  margin-right: 0.15rem;
}

/* Project cards — title first, then thumbs + text */
.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.project-card:last-of-type {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.project-card > .title {
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.35;
}

.project-row {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.project-thumbs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.project-thumbs.portrait {
  flex: 0 0 219px;
  flex-direction: row;
}

.project-thumbs.landscape {
  flex: 0 0 219px;
}

.project-thumbs.landscape a {
  flex: none;
  width: 219px;
}

.project-thumbs a {
  display: block;
  flex: 1;
  min-width: 0;
}

.project-thumbs img {
  border-radius: 3px;
  display: block;
  background: #f3f3f3;
}

.project-thumbs video {
  border-radius: 3px;
  display: block;
  background: #f3f3f3;
}

.project-thumbs.portrait img {
  flex: 1;
  min-width: 0;
  width: 100%;
  height: 187px;
  object-fit: cover;
}

.project-thumbs.landscape img,
.project-thumbs.landscape video {
  width: 219px;
  height: 123px;
  object-fit: cover;
}

.project-thumbs.sber-grid {
  flex: 0 0 219px;
  flex-direction: column;
  gap: 0.5rem;
}

.sber-top {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
}

.sber-top img {
  flex: 1;
  min-width: 0;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 3px;
  background: #f3f3f3;
}

.sber-top img.sber-dance {
  aspect-ratio: 160 / 266;
  object-position: center;
}

.sber-top img.sber-teleop {
  aspect-ratio: 160 / 266;
  object-position: 62% center;
}

.sber-grid .sber-walk {
  width: 100%;
  height: auto;
  aspect-ratio: 320 / 159;
  object-fit: cover;
  object-position: center;
  border-radius: 3px;
  background: #f3f3f3;
}

.project-body {
  flex: 1;
  min-width: 0;
}

.project-body p {
  margin: 0 0 0.45rem;
}

.project-body .meta {
  color: var(--text-light);
  font-style: italic;
  margin-bottom: 0.35rem;
}

.project-body .links {
  font-size: 0.92rem;
  margin: 0;
}

.project-body .links a {
  margin-right: 0.15rem;
}

/* Publications dropdown */
.pub-dropdown > summary,
.pub-year > summary {
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.pub-dropdown > summary::-webkit-details-marker,
.pub-year > summary::-webkit-details-marker {
  display: none;
}

.pub-dropdown > summary::before,
.pub-year > summary::before {
  content: "▸ ";
  display: inline-block;
  width: 1em;
  transition: transform 0.15s ease;
}

.pub-dropdown[open] > summary::before,
.pub-year[open] > summary::before {
  transform: rotate(90deg);
}

.pub-dropdown > summary {
  color: var(--link);
  font-size: 0.95rem;
  margin-top: 0.25rem;
}

.pub-dropdown > summary:hover {
  text-decoration: underline;
}

.pub-list {
  margin-top: 0.75rem;
}

.pub-year {
  border-top: 1px solid var(--border);
}

.pub-year:first-child {
  border-top: none;
}

.pub-year > summary {
  font-weight: 600;
  padding: 0.65rem 0;
  color: var(--text);
}

.pub-year > summary:hover {
  color: var(--link);
}

.pub-year .row-item:first-of-type {
  margin-top: 0;
}

.pub-year .row-item:last-child {
  padding-bottom: 0.75rem;
}

/* Year headers in publications (legacy) */
.year-label {
  font-weight: 600;
  margin: 1.25rem 0 0.75rem;
  color: var(--text);
}

.year-label:first-child {
  margin-top: 0;
}

/* Experience */
.exp-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.exp-item .year {
  flex: 0 0 88px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-light);
}

.exp-item .role {
  font-weight: 600;
}

.exp-item .org {
  color: var(--text-light);
}

/* Alumni tabs */
.tab-bar {
  display: flex;
  gap: 0;
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  border-bottom: 2px solid var(--border);
}

.tab-bar li button {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  padding: 0.5rem 1rem;
  font: inherit;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-light);
  cursor: pointer;
}

.tab-bar li button:hover {
  color: var(--text);
}

.tab-bar li button.active {
  color: var(--text);
  border-bottom-color: var(--link);
  font-weight: 600;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.alumni-item {
  margin-bottom: 0.85rem;
}

.alumni-item .name {
  font-weight: 600;
}

.alumni-item .detail {
  color: var(--text-light);
  font-size: 0.92rem;
}

.empty-note {
  color: var(--text-light);
  font-style: italic;
}

/* CV page */
.cv-block {
  margin-bottom: 2rem;
}

.cv-block h2 {
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35rem;
}

.cv-entry {
  margin-bottom: 1rem;
}

.cv-entry .title {
  font-weight: 600;
}

.cv-entry .institution {
  color: var(--text-light);
}

.cv-pdf-link {
  float: right;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--link);
}

.cv-header {
  text-align: center;
  margin-bottom: 1.75rem;
}

.cv-header .name {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.cv-header .contact {
  margin: 0;
  line-height: 1.6;
}

.cv-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.cv-date {
  font-style: italic;
  color: var(--text-light);
  white-space: nowrap;
}

.cv-block h3,
.cv-block .cv-subhead {
  font-size: 1rem;
  font-weight: 600;
  margin: 0.75rem 0 0.35rem;
}

.cv-block ul {
  margin: 0.35rem 0 0;
  padding-left: 1.25rem;
}

.cv-block ul li {
  margin-bottom: 0.35rem;
}

.cv-block > p {
  margin: 0 0 0.75rem;
}

.cv-block > p:last-child {
  margin-bottom: 0;
}

/* Footer contact */
.contact-footer {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.95rem;
}

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

@media (max-width: 640px) {
  .intro-table,
  .intro-table tbody,
  .intro-table tr,
  .intro-table td {
    display: block;
    width: 100%;
  }

  .intro-table .photo {
    text-align: center;
    padding: 0 0 1rem;
  }

  .row-item {
    flex-direction: column;
  }

  .project-row {
    flex-direction: column;
  }

  .project-thumbs {
    flex: none;
    width: 100%;
  }

  .project-thumbs.portrait {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .project-thumbs.landscape {
    flex-direction: column;
  }

  .project-thumbs.landscape a {
    width: 100%;
  }

  .project-thumbs.landscape img,
  .project-thumbs.landscape video {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .project-thumbs.sber-grid {
    flex: none;
    flex-direction: column;
    width: 100%;
  }

  .sber-top {
    flex-direction: row;
    width: 100%;
  }

  h2 .subtle {
    float: none;
    display: block;
    margin-top: 0.25rem;
  }

  .exp-item {
    flex-direction: column;
    gap: 0.2rem;
  }
}