/* CSS Variables */
:root {
  --global-bg-color: #ffffff;
  --global-text-color: #333;
  --global-text-color-light: #555;
  --global-link-color: #0066cc;
  --global-card-bg-color: #ffffff;
  --global-card-border-color: #e0e0e0;
  --global-hover-shadow: rgba(0, 0, 0, 0.1);
}

html[data-theme='dark'] {
  --global-bg-color: #1e1e1e;
  --global-text-color: #e0e0e0;
  --global-text-color-light: #b0b0b0;
  --global-link-color: #4da6ff;
  --global-card-bg-color: #2a2a2a;
  --global-card-border-color: #404040;
  --global-hover-shadow: rgba(255, 255, 255, 0.1);
}

html.transition,
html.transition *,
html.transition *:before,
html.transition *:after {
  transition: all 0.5s !important;
  transition-delay: 0 !important;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--global-text-color);
  background-color: var(--global-bg-color);
}

.rounded-image {
  border-radius: 8px;
  width: 100%;
  max-width: 100%;
}

.social-links {
  text-align: center;
  margin-top: 15px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.social-links a {
  color: var(--global-text-color);
  font-size: 24px;
  transition: color 0.3s ease, transform 0.2s ease;
}

.social-links a:hover {
  color: var(--global-link-color);
  transform: scale(1.15);
  text-decoration: none;
}

.name {
  font-size: 1.5em;
  font-weight: bold;
  margin-bottom: 0.5em;
}

h2 {
  font-size: 1.2em;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

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

a:hover {
  text-decoration: underline;
}

/* Theme Toggle Button */
.theme-toggle {
  position: fixed;
  top: 12px;
  right: 20px;
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--global-text-color);
  z-index: 1000;
  padding: 8px;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background-color: var(--global-card-border-color);
}

:root .fa-sun {
  display: block;
}

:root .fa-moon {
  display: none;
}

html[data-theme='dark'] .fa-sun {
  display: none;
}

html[data-theme='dark'] .fa-moon {
  display: block;
}

/* Navigation */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--global-card-bg-color);
  border-bottom: 1px solid var(--global-card-border-color);
  padding: 15px 0;
  z-index: 999;
  box-shadow: 0 2px 4px var(--global-hover-shadow);
}

.nav-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 40px;
}

.nav-link {
  color: var(--global-text-color);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--global-link-color);
  text-decoration: none;
}

/* Add top padding to body content to account for fixed nav */
.main-content {
  padding-top: 60px;
}

/* Publication and Project Cards */
.card-container {
  display: flex;
  flex-direction: column;
  gap: 25px;
  margin-top: 20px;
}

.card {
  display: flex;
  gap: 15px;
  padding: 15px;
  border-radius: 8px;
  transition: all 0.3s ease;
  border: 1px solid var(--global-card-border-color);
  background-color: var(--global-card-bg-color);
}

.card:hover {
  box-shadow: 0 4px 12px var(--global-hover-shadow);
  transform: translateY(-2px);
}

.card-image {
  flex-shrink: 0;
  width: 160px;
  height: 120px;
  overflow: hidden;
  border-radius: 12px;
  align-self: flex-start;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-title {
  font-size: 1.1em;
  font-weight: bold;
  margin: 0;
  color: var(--global-link-color);
}

.card-title:hover {
  text-decoration: underline;
}

.card-authors {
  font-size: 0.95em;
  color: var(--global-text-color-light);
  margin: 0;
}

.card-authors strong {
  color: var(--global-link-color);
}

.card-venue {
  font-size: 0.9em;
  color: var(--global-text-color-light);
  font-style: italic;
  margin: 0;
}

.card-description {
  font-size: 0.95em;
  color: var(--global-text-color);
  line-height: 1.5;
  margin: 5px 0;
}

.card-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.card-link {
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75em;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
  display: inline-block;
}

.link-pdf {
  background-color: #dc3545;
  color: white;
}

.link-pdf:hover {
  background-color: #c82333;
  text-decoration: none;
}

.link-code {
  background-color: #28a745;
  color: white;
}

.link-code:hover {
  background-color: #218838;
  text-decoration: none;
}

.link-web {
  background-color: #007bff;
  color: white;
}

.link-web:hover {
  background-color: #0056b3;
  text-decoration: none;
}

.link-data {
  background-color: #ffc107;
  color: #333;
}

.link-data:hover {
  background-color: #e0a800;
  text-decoration: none;
}

.link-slides {
  background-color: #6c757d;
  color: white;
}

.link-slides:hover {
  background-color: #5a6268;
  text-decoration: none;
}

/* Footer */
.footer {
  text-align: center;
  padding: 15px 10px;
  margin-top: 60px;
  border-top: 1px solid var(--global-card-border-color);
  color: var(--global-text-color-light);
  font-size: 0.75em;
}

.footer p {
  margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .card {
    flex-direction: column;
  }

  .card-image {
    width: 100%;
    height: 200px;
  }
}