:root {
  --bg-color: #ffffff;
  --text-color: #111111;
  --link-color: #0070f3;
  --card-bg: #f5f5f5;
  --header-bg: #fafafa;
  --accent-color: #0070f3;
  --border-color: #eaeaea;
}

[data-theme="dark"] {
  --bg-color: #1d1d1f;
  --text-color: #f5f5f7;
  --link-color: #2997ff;
  --card-bg: #2c2c2e;
  --header-bg: #161617;
  --accent-color: #2997ff;
  --border-color: #3a3a3c;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

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

a:hover {
  text-decoration: underline;
}

header {
  background-color: var(--header-bg);
  padding: 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}

.header-text {
  max-width: 600px;
}

.profile-image {
  max-width: 180px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
}

h1 {
  margin-bottom: 0.5rem;
}

.location {
  font-weight: 500;
  font-size: 0.95rem;
}

.social-links a {
  margin-right: 10px;
  font-size: 1.2rem;
}

.quick-links {
  margin-top: 1rem;
}

.quick-link {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.8rem;
  background: var(--accent-color);
  color: white;
  border-radius: 6px;
  margin-right: 8px;
}

.quick-link-icon {
  margin-right: 5px;
}

main {
  padding: 2rem;
}

.bio p {
  font-size: 1.1rem;
  line-height: 1.6;
}

.work, .projects {
  margin-top: 3rem;
}

.work-list, .project-grid {
  list-style: none;
  padding: 0;
}

.work-item, .project-item {
  margin-bottom: 1.5rem;
  padding: 1.2rem;
  background: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  transition: box-shadow 0.3s;
}

.work-item:hover, .project-item:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.work-item-header {
  display: flex;
  align-items: center;
}

.work-title {
  margin-left: 1rem;
}

.project-item {
  background-color: var(--card-bg, #f0f0f0);
  padding: 1.2em;
  border-radius: 12px;
  margin: 1em;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  text-align: center;
  transition: transform 0.2s ease;
}

.project-item:hover {
  transform: scale(1.02);
}

.project-item img {
  max-width: 100%;
  border-radius: 8px;
  margin-bottom: 0.5em;
}

.underline {
  text-decoration: underline;
  color: var(--link-color, #007aff);
}

.cv-link {
  display: inline-block;
  padding: 10px 18px;
  background-color: var(--button-bg, #007aff);
  color: white;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: background-color 0.3s ease, color 0.3s ease;
  position: relative;
}

.cv-link:hover {
  background-color: var(--button-hover-bg, #0051c7);
  color: #fff;
}

/* Hover text replacement */
.cv-link::after {
  content: "Request via email";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  color: #fff;
  text-align: center;
  line-height: 38px; /* adjust for vertical alignment */
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cv-link:hover::after {
  opacity: 1;
}

.cv-link:hover {
  color: transparent;
}

.icon-logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
  margin-right: 15px;
  vertical-align: middle;
}

.icon-logo.avs {
  width: 52px;
  height: 52px;
}



/* footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
  background-color: var(--header-bg);
  color: var(--text-color);
  border-top: 1px solid var(--border-color);
} */

footer {
  background: url('chautauqua-flatirons.jpg.avif') no-repeat center/cover;
  color: white;
  padding: 40px;
  text-align: center;
}


/* Dark mode toggle button */
.toggle-theme {
  position: fixed;
  top: 1rem;
  right: 1rem;
  padding: 0.5rem 1rem;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

/* Project layout and size */
.projects {
  padding-top: 40px;
}

.project-item {
  margin-bottom: 30px;
  max-width: 600px;
}

.image-container {
  position: relative;
  width: 100%;
  max-height: 260px;
  overflow: hidden;
  cursor: pointer;
}

.image-container img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.image-container:hover img {
  transform: scale(1.02);
}

.overlay {
  position: absolute;
  bottom: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  width: 100%;
  padding: 10px;
  color: white;
  font-weight: bold;
  font-size: 1.1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.overlay-text {
  pointer-events: none;
}

.expand-arrow {
  font-size: 1.5em;
}

/* Expandable description */
.project-description {
  display: none;
  margin-top: 10px;
  animation: fadeIn 0.3s ease-in-out;
}

.project-item.expandable.active .project-description {
  display: block;
}

@keyframes fadeIn {
  from {opacity: 0;}
  to {opacity: 1;}
}


.abstract-thumbnail {
  margin-top: 1em;
  width: fit-content;
}

.thumbnail-hover {
  position: relative;
  width: 320px;
  height: auto;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.2);
}

.thumbnail-hover img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}

.thumbnail-hover .hover-text {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  text-align: center;
  padding: 0.7em 0;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  border-radius: 0 0 12px 12px;
}

.thumbnail-hover:hover .hover-text {
  opacity: 1;
}

.media-block {
  max-width: 720px;
  width: 100%;
  margin: 1.5em auto;
}

.media-block video {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

/* Reuse this class for consistent sizing */
.abstract-thumbnail .thumbnail-hover {
  width: 100%;
  height: auto;
  border-radius: 12px;
  overflow: hidden;
}

.thumbnail-hover img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}

.thumbnail-hover .hover-text {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  text-align: center;
  padding: 0.7em 0;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
  border-radius: 0 0 12px 12px;
}

.thumbnail-hover:hover .hover-text {
  opacity: 1;
}

.project-item-expandable .dropdown-arrow {
  font-size: 1.5em;
  color: #888;
  cursor: pointer;
  position: absolute;
  top: 10px;
  right: 15px;
  transition: transform 0.3s ease;
}

.project-item-expandable .project-item-content {
  display: none;
  padding-top: 1em;
}

.project-item-expandable.open .project-item-content {
  display: block;
}

.project-item-expandable.open .dropdown-arrow {
  transform: rotate(180deg);
}

.project-item-expandable .expandable-header {
  position: relative;
  cursor: pointer;
}


.project-item.expandable .project-description {
  display: none;
  padding-top: 1em;
}
.project-item.expandable.open .project-description {
  display: block;
}
.project-item.expandable .expand-arrow {
  font-size: 1.2em;
  position: absolute;
  bottom: 10px;
  right: 15px;
  color: #fff;
  transition: transform 0.3s ease;
}
.project-item.expandable.open .expand-arrow {
  transform: rotate(180deg);
}

.search-icon {
  color: #8e8e8e;
  margin-right: 8px;
}

.search-icon iconify-icon {
  font-size: 20px;
  vertical-align: middle;
}

.work-item-header .iconify {
  transition: transform 0.3s ease;
}

.work-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  font-size: 1.05rem;
  font-weight: 500;
  gap: 0.4rem;
  margin-left: 1rem;
}

.title-separator {
  color: #999;
  font-weight: 400;
}

/* Top nav */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  background: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
}

.site-nav a {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  color: var(--text-color);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
}

.site-nav a:hover {
  background: var(--card-bg);
  text-decoration: none;
}

.site-nav a.active,
.site-nav a[aria-current="page"] {
  background: var(--accent-color);
  color: #fff;
}

.projects .project-item a.image-container {
  display: block;
  text-decoration: none;
  color: inherit;
}

.blog-container .figure-grid { display:grid; gap:1rem; grid-template-columns:1fr; }
@media (min-width: 900px){ .blog-container .figure-grid { grid-template-columns:1fr 1fr; } }
.blog-container figure { margin:0; }
.blog-container figcaption { font-size:.95rem; opacity:.9; margin-top:.5rem; }

/* Active state for case buttons */
.badge.active{
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}

.profile-image{
  max-width: min(240px, 100%);
  height: auto;
  object-fit: contain;
}

/* Canvas looks crisp on HiDPI */
#transferCanvas{ width:100%; height:auto; display:block; }

.badge.active{
  background: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px color-mix(in oklab, var(--accent-color) 25%, transparent);
}

.ai-disclaimer {
  font-size: 0.85rem;
  font-style: italic;
  color: #666;
  margin-top: 2rem;
  text-align: center; /* optional */
}