:root {
  /* Color variables that adapt to light/dark mode */
  --color-bg-primary: #fff;
  --color-bg-secondary: #f6f8fa;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #000;
  --color-link-primary: #316cf4;
  --color-link-secondary: #316cf4;
  --color-active-bg: rgba(49, 108, 244, 0.1);
  --color-active-bg-strong: rgba(49, 108, 244, 0.2);
  --color-border: #e1e4e8;
  --color-btn-primary-bg: #316cf4;
  --color-btn-primary-text: #fff;
  --color-btn-primary-hover: #2857d1;
}

/* Dark mode: redefine the same variables */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-primary: #121212; /*#0d1117;*/
    --color-bg-secondary: #1a1a1a; /*#161b22;*/
    --color-text-primary: #f0f6fc;
    --color-text-secondary: #c9d1d9;
    --color-link-primary: #58a6ff;
    --color-link-secondary: #c9d1d9; /*58a6ff;*/
    --color-active-bg: rgba(88, 166, 255, 0.1);
    --color-active-bg-strong: rgba(88, 166, 255, 0.2);
    --color-border: #30363d;
    --color-btn-primary-bg: #58a6ff;
    --color-btn-primary-text: #0d1117;
    --color-btn-primary-hover: #79b8ff;
  }
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  background-color: var(--color-bg-primary);
  color: var(--color-text-secondary);
  line-height: 1.6;
}
h1 {
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 1.75rem;
  color: var(--color-text-primary);
}
h2 {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
  margin-top: 30px;
  font-size: 1.5rem;
}
h3 {
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-text-primary);
  font-size: 1.25rem;
}
h4 {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}
h5 {
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-text-primary);
}
@media (min-width: 1400px) {
  .topbar .container {
    max-width: 1140px;
  }
}
.publogo {
  margin-right: 20px;
  border-radius: 6px;
  /*box-shadow: 0 2px 8px rgba(0,0,0,0.1);*/
  transition: transform 0.2s ease;
  position: relative;
  z-index: 2;
}
.media-container.loaded .publogo:hover {
  transform: scale(1.04);
}
.publication {
  padding-top: 15px;
  margin-bottom: 15px;
}
.publication strong a {
  color: var(--color-text-secondary);
  text-decoration: none;
}
.publication strong a:hover {
  color: var(--color-link-primary);
  text-decoration: underline;
}
ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
ul ul {
  padding-top: 6px;
  list-style: disc;
  padding-left: 40px;
}
ul li {
  padding-bottom: 6px;
}
.nameplate {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
a,
a:hover {
  color: var(--color-link-primary);
}
a {
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.nav-link:hover {
  text-decoration: underline;
}
.navbar-link {
  color: var(--color-link-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  display: block;
  border-radius: 6px;
  transition: none;
}
.navbar-link:hover {
  color: var(--color-link-secondary);
  background-color: var(--color-active-bg);
  text-decoration: none;
}
.navbar-toggler {
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  border: none;
  background-color: var(--color-bg-secondary);
  border-radius: 6px;
  transition: background-color 0.2s ease;
}
.navbar-toggler:hover {
  background-color: var(--color-active-bg);
}
.navbar-toggler:focus {
  box-shadow: none;
  outline: none;
}
.active {
  color: var(--color-link-primary) !important;
  background-color: var(--color-active-bg) !important;
  border-radius: 6px;
}
.active:hover {
  color: var(--color-text-primary) !important;
  text-decoration: none;
}
.student {
  text-align: center;
  align-self: flex-start;
  border-radius: 8px;
  margin-bottom: 10px;
}
.student img {
  transition: transform 0.2s ease;
}
.student:hover img {
  transform: scale(1.04);
}
.student a,
.student a:hover {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.navbar-light {
  background-color: var(--color-bg-primary) !important;
}
.topbar {
  background-color: var(--color-bg-secondary);
}
.topbar a {
  color: var(--color-text-secondary);
}
.topbar h1,
.topbar h3 {
  color: var(--color-text-secondary);
}
.darker {
  background-color: var(--color-bg-secondary);
}

.publication .links {
  line-height: 1.8;
}
.publication .links a {
  margin-right: 15px;
  display: inline-block;
}

/* Nav pills styling */
.nav-pills .nav-link {
  color: var(--color-link-secondary);
  border-radius: 6px;
  transition: none;
}

.nav-pills .nav-link:hover {
  color: var(--color-link-secondary);
  background-color: var(--color-active-bg);
  text-decoration: none;
}

.nav-pills .nav-link.active {
  background-color: var(--color-active-bg-strong);
  color: var(--color-link-secondary);
}

/* Offcanvas sidebar styling */
.offcanvas {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

.offcanvas-header {
  border-bottom: 1px solid var(--color-border);
}

/* Hamburger icon styling */
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2833, 33, 33, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Dark mode specific overrides (only non-color changes) */
@media (prefers-color-scheme: dark) {
  .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28240, 246, 252, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }

  .btn-close {
    filter: invert(1);
  }
}

/* Student grid layout */
.student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 20px;
}

/* Student name container */
.student-name-container {
  height: 2em;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

/* Mobile inline button wrapper */
.mobile-inline-button {
  display: inline-block;
}

/* Button styles */
.btn-primary {
  background-color: var(--color-btn-primary-bg);
  border-color: var(--color-btn-primary-bg);
  color: var(--color-btn-primary-text);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
  background-color: var(--color-btn-primary-hover);
  border-color: var(--color-btn-primary-hover);
  color: var(--color-btn-primary-text);
}

/* Image placeholder and loading states */
.media-container {
  position: relative;
  width: 100px;
  margin-right: 20px;
  float: left;
}

.media-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100px;
  height: 100px;
  background-color: var(--color-bg-secondary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  overflow: hidden;
}


/* Spinner in placeholder */
.media-placeholder .spinner-border {
  width: 1.5rem;
  height: 1.5rem;
  opacity: 0.5;
  z-index: 2;
  position: relative;
}

/* Hide placeholder when media is loaded */
.media-container.loaded .media-placeholder {
  visibility: hidden;
}

/* Ensure hover transition works properly */
.media-container.loaded .publogo {
  transition: transform 0.2s ease;
}