/* General Styles */
:root {
  --bg-color-light: #ffffff;
  --text-color-light: #333333;
  --bg-color-dark: #333333;
  --text-color-dark: #ffffff;

  --bg-color: var(--bg-color-light);
  --text-color: var(--text-color-light);
}

.dark-theme {
  --bg-color: var(--bg-color-dark);
  --text-color: var(--text-color-dark);
}

body {
  font-family: Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
  box-sizing: border-box;
}

header {
  background: var(--bg-color);
  color: inherit;
  padding: 1rem 2rem;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s, color 0.3s;
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.nav-list a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s;
}

/* Theme Toggle Button */
#theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
}

#theme-toggle img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.3s;
}

.dark-theme #sun-icon {
  display: none;
}

#moon-icon {
  display: none;
}

.dark-theme #moon-icon {
  display: inline;
}

.light-theme #sun-icon {
  display: inline;
}

/* Main Layout */
.big-div {
  display: flex;
  min-height: calc(100vh - 80px);
  /* acc for header height */
}

/* Sidebar Styles */
.about-container {
  display: flex;
  width: 100%;
  gap: 40px;
}

.sidebar {
  position: fixed;
  left: 0;
  top: 80px;
  /* acc for header height */
  width: 250px;
  height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  padding: 2rem 1rem;
  background: var(--bg-color);
  transition: background-color 0.3s, color 0.3s;
  overflow-y: auto;
}

.profile-picture {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  margin-bottom: 1px;
}

.profile-picture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 45%;
  transform: scale(1.4) translateY(-5%);
}

.name {
  font-size: 22px;
  margin-bottom: -15px;
}

.title {
  font-size: 16px;
  color: grey;
  margin-bottom: 8px;
}

/* Social Links */
.social-links {
  display: flex;
  justify-content: center;
}

.social-links a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 35px;
  height: 35px;
  gap: 1rem;
  color: var(--text-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.social-links i {
  font-size: 20px;
}

.social-links a:hover {
  color: #007bff;
}

/* Main Content */
.main-content {
  margin-left: 290px;
  width: calc(100% - 290px);
  padding: 0 2rem;
}

/* About Section */
.about-text-div {
  display: flex;
  flex-direction: column;
  text-align: left;
  max-width: 750px;
  padding: 4rem 0;
  font-size: 1.1em;
}

.greeting-text {
  font-size: 28px;
  margin-bottom: 2px;
}

.about-p {
  font-size: 18px;
  line-height: 1.5;
  margin-bottom: 5px;
}

.about-list {
  padding-left: 20px;
  list-style-type: disc;
}

a {
  color: #007bff;
  text-decoration: none;
}

/* Interests and Updates Section */
.interests-updates-container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 20px;
}

.interests,
.updates-section {
  width: 50%;
}

.interests h3,
.updates-section h3 {
  font-size: 25px;
  /* Increased from 22px */
  margin-bottom: 10px;
}

/* Tag Styles */
.tag-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  background-color: rgba(0, 0, 0, 0.1);
  /* make better for dark mode!!!! */
  color: var(--text-color);
  padding: 5px 10px;
  border-radius: 15px;
  font-size: 16px;
  /* Increased from 14px */
  position: relative;
  cursor: pointer;
  transition: background-color 0.3s, color 0.3s;
}

.tag:hover {
  background-color: #d0d0d0;
}

/* Tooltip Style */
.tooltip {
  position: absolute;
  background-color: #333;
  color: #fff;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 12px;
  white-space: nowrap;
  top: -30px;
  left: 50%;
  transform: translateX(-50%);
  display: none;
}

.tag:hover .tooltip {
  display: block;
}

/* Scrollable Updates Box */
.updates-section {
  display: flex;
  flex-direction: column;
}

.updates-box {
  max-height: 150px;
  overflow-y: auto;
  overflow-x: hidden;
  border: 1px solid var(--text-color);
  padding: 10px;
  font-size: 16px;
  /* Increased from 14px */
  background-color: rgba(0, 0, 0, 0.05);
  border-radius: 8px;
  transition: border-color 0.3s, background-color 0.3s, color 0.3s;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

.updates-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.updates-box li {
  margin-bottom: 8px;
  white-space: normal;
}

/* Publications Section */
.publications-section {
  margin-top: 3rem;
  max-width: 750px;
}

.publications-section h3 {
  font-size: 25px;
  margin-bottom: 20px;
}

.publications-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.publication-item {
  display: flex;
  gap: 15px;
  padding: 15px;
  border: 1px solid var(--text-color);
  border-radius: 8px;
  background-color: rgba(0, 0, 0, 0.02);
  transition: border-color 0.3s, background-color 0.3s, box-shadow 0.3s;
}

.publication-item:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  background-color: rgba(0, 0, 0, 0.05);
}

.publication-image {
  flex-shrink: 0;
  width: 100px;
  height: 70px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.publication-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.publication-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.publication-title {
  font-size: 16px;
  margin: 0;
  color: var(--text-color);
}

.publication-authors {
  font-size: 16px;
  margin: 0;
  color: var(--text-color);
  opacity: 0.8;
}

.publication-venue {
  font-size: 14px;
  margin: 0;
  color: var(--text-color);
  opacity: 0.7;
  font-style: italic;
}

.publication-links {
  display: flex;
  gap: 12px;
  margin-top: 6px;
}

.publication-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background-color: rgba(0, 123, 255, 0.1);
  color: #007bff;
  text-decoration: none;
  border-radius: 4px;
  font-size: 13px;
  transition: background-color 0.3s, color 0.3s;
}

.publication-link:hover {
  background-color: rgba(0, 123, 255, 0.2);
  color: #0056b3;
}

.publication-link i {
  font-size: 11px;
}

/* Experience Section */
.experience-section {
  margin-top: 3rem;
  max-width: 750px;
  scroll-margin-top: 100px;
}

.experience-section h3 {
  font-size: 25px;
  margin-bottom: 20px;
}

.timeline-container {
  max-height: 225px;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px;
}

.timeline {
  position: relative;
  padding-left: 30px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--text-color);
  opacity: 0.3;
}

.timeline-item {
  position: relative;
  margin-bottom: 20px;
}

.timeline-marker {
  position: absolute;
  left: -22px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #888;
  border: 2px solid var(--bg-color);
  box-shadow: 0 0 0 1px #888;
  z-index: 1;
}

.timeline-content {
  background: transparent;
  border: none;
  padding: 15px 0;
  transition: none;
}

.timeline-content:hover {
  background: transparent;
}

.timeline-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  margin-bottom: 8px;
}

.timeline-title {
  font-size: 16px;
  font-weight: bold;
  margin: 0;
  color: var(--text-color);
}

.timeline-company {
  font-size: 14px;
  color: var(--text-color);
  opacity: 0.8;
  font-weight: 500;
}

.timeline-date {
  font-size: 12px;
  color: var(--text-color);
  opacity: 0.7;
  font-style: italic;
}

.timeline-description {
  display: none;
}

.timeline-tags {
  display: none;
}

.timeline-tag {
  display: none;
}

/* Footer */
footer {
  text-align: center;
  padding: 1rem;
  background: var(--bg-color);
  color: var(--text-color);
  margin-top: 2rem;
  margin-left: 290px;
  /* account for sidebar width */
  transition: background-color 0.3s, color 0.3s;
}

/* Responsive Design */
@media (max-width: 768px) {
  header {
    padding: 1rem 1rem;
    width: 100%;
    box-sizing: border-box;
    justify-content: space-between;
  }

  .nav-list {
    gap: 15px;
    flex: 1;
    justify-content: center;
  }

  .sidebar {
    position: relative;
    top: 0;
    width: 100%;
    height: auto;
    margin-bottom: 1rem;
    padding: 2rem 1rem;
    box-sizing: border-box;
  }

  .main-content {
    margin-left: 0;
    width: 100%;
    padding: 0 1rem;
    box-sizing: border-box;
  }

  .about-text-div {
    padding: 2rem 0;
  }

  .about-container {
    flex-direction: column;
  }

  footer {
    margin-left: 0;
    padding: 1rem 1rem;
    box-sizing: border-box;
  }

  .big-div {
    flex-direction: column;
  }

  .publication-item {
    flex-direction: column;
    gap: 15px;
  }

  .publication-image {
    width: 100%;
    height: 120px;
  }

  .publication-links {
    flex-wrap: wrap;
  }

  .timeline {
    padding-left: 20px;
  }

  .timeline::before {
    left: 10px;
  }

  .timeline-marker {
    left: -17px;
  }

  .timeline-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }

  .timeline-container {
    max-height: 240px;
    padding: 15px 0;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
  }
}