/* CSS Custom Properties for Light/Dark Theme */
:root {
  --bg-primary: white;
  --bg-secondary: #f8f9fa;
  --text-primary: #333;
  --text-secondary: #444;
  --text-heading: #1e293b;
  --accent-primary: #1e40af;
  --accent-secondary: #2563eb;
  --border-light: #e2e8f0;
  --shadow-light: rgba(0,0,0,0.1);
  --gradient-primary: linear-gradient(135deg, #0f172a 0%, #1e40af 50%, #3b82f6 100%);
  --nav-bg: #f1f5f9;
  --nav-text: #475569;
  --nav-hover-bg: #1e40af;
  --nav-hover-text: white;
  --nav-bar-inactive: linear-gradient(180deg, #e2e8f0 0%, #f1f5f9 100%);
  --nav-bar-active: linear-gradient(180deg, #0f172a 0%, #1e40af 100%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #e2e8f0;
    --text-secondary: #cbd5e1;
    --text-heading: #f1f5f9;
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --border-light: #475569;
    --shadow-light: rgba(0,0,0,0.3);
    --gradient-primary: linear-gradient(135deg, #1e293b 0%, #3b82f6 50%, #60a5fa 100%);
    --nav-bg: #334155;
    --nav-text: #cbd5e1;
    --nav-hover-bg: #3b82f6;
    --nav-hover-text: white;
    --nav-bar-inactive: linear-gradient(180deg, #475569 0%, #64748b 100%);
    --nav-bar-active: linear-gradient(180deg, #60a5fa 0%, #3b82f6 100%);
  }
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  font-size: 17px;
  min-height: 100vh;
}

/* Container and layout */
#wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px;
  display: block;
  position: relative;
  background: var(--bg-primary);
}

/* Header section with photo */
.header-section {
  display: flex;
  flex-direction: row;
  align-items: center;
  text-align: left;
  gap: 40px;
  /* padding: 40px; */
  padding: 0px 0px 0px 40px;
  /* background: var(--gradient-primary); */
  /* border-radius: 24px; */
  margin-bottom: 40px;
  /* box-shadow: 0 20px 40px rgba(30, 45, 111, 0.4); */
  position: relative;
  overflow: hidden;
  border-bottom: solid;
  border-width: 1px;
  border-bottom-color: rgb(226, 224, 224);
}

.header-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
  pointer-events: none;
}

.profile-photo {
  width: 160px;
  height: 160px;
  /* border-radius: 50%; */
  object-fit: cover;
  /* border: 4px solid rgba(255,255,255,0.8); */
  /* box-shadow: 0 15px 50px rgba(0,0,0,0.4); */
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.profile-info h1 {
  font-size: 2rem;
  font-weight: 500;
  color: #888;
  margin-bottom: 12px;
  letter-spacing: -0.8px;
  /* text-shadow: 0 2px 20px rgba(0,0,0,0.3); */
  position: relative;
  z-index: 2;
  border-bottom: 4px solid transparent;
  /* border-image: linear-gradient(90deg, rgba(255,255,255,0.75) 0%, rgba(255,255,255,0.7) 50%, rgba(255,255,255,0.75) 100%) 1; */
  padding-bottom: 8px;
}



.profile-info .title {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 25px;
  font-weight: 500;
  text-shadow: 0 1px 10px rgba(0,0,0,0.2);
  position: relative;
  z-index: 2;
}

.profile-info {
  flex: 1;
  position: relative;
  z-index: 2;
}

.contact-links {
  display: flex;
  /* flex-wrap: wrap; */
  gap: 8px;
  justify-content: flex-start;
}

/* Prevent contact links from wrapping on tablet/desktop */
@media (min-width: 400px) and (max-width: 830px) {
  .contact-links a {
    padding: 6px 9px !important;
    font-size: 0.8rem !important;
  }
}

@media (min-width: 400px) and (max-width: 1023px) {
  .contact-links {
    gap: 4px;
  }
  
  .contact-links a {
    padding: 7px 10px;
    font-size: 0.9rem;
  }
}

.contact-links a {
  color: #1f2937;
  padding-bottom: 5px;
  /* text-decoration: none !important; */
  /* padding: 9px 16px; */
  /* border-radius: 30px; */
  /* background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(248,250,252,0.95) 100%); */
  border: none;
  /* transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); */
  font-weight: 600;
  /* box-shadow: 0 8px 25px rgba(0,0,0,0.15); */
  /* backdrop-filter: blur(10px); */
  position: relative;
  z-index: 2;
  font-size: 1.1em;
}

/* .contact-links a:hover {
  background: linear-gradient(135deg, #94a3b8 0%, #cbd5e1 100%); 
  color: white; 
  text-decoration: none !important;
  box-shadow: 0 8px 25px rgba(203, 213, 225, 0.3);
  transform: translateY(-2px);
} */

/* Main content area */
#content {
  margin-left: 0;
  padding: 0;
  line-height: 1.7;
}

/* Adjust content when sidebar is present */
@media (min-width: 768px) {
  #content {
    margin-right: 300px;
    margin-left: 40px;
  }
}

/* Sidebar navigation */
#sidebar {
  float: right;
  width: 260px;
  padding-left: 30px;
  border-left: none;
  margin-bottom: 30px;
}

#sidebar #photo {
  text-align: center;
  margin-bottom: 20px;
}

#sidebar #photo img,
.sidebar-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 4px solid #f0f0f0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  object-fit: cover;
}

#sidebar ul {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

#sidebar ul li {
  margin-bottom: 15px;
  padding: 0;
}

#sidebar ul li a {
  display: block;
  padding: 12px 20px;
  background-color: #f8f9fa;
  color: #2c3e50;
  text-decoration: none !important;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

#sidebar ul li a:hover {
  background-color: #3498db;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
  text-decoration: none !important;
}

/* Override any global underline rules for sidebar links */
#sidebar ul li a,
#sidebar ul li a:hover,
#sidebar ul li a:visited,
#sidebar ul li a:active {
  text-decoration: none !important;
}

/* More specific override for navigation links */
aside#sidebar nav.nav-menu a,
aside#sidebar nav.nav-menu a:hover,
aside#sidebar nav.nav-menu a:visited,
aside#sidebar nav.nav-menu a:active {
  text-decoration: none !important;
}

/* Navigation menu spacing fix */
.nav-menu a {
  margin-bottom: 5px !important;
  display: inline-block !important;
}

.nav-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
}

.nav-menu a {
  display: block;
  padding: 2px 20px;
  background-color: transparent;
  color: var(--text-secondary);
  text-decoration: none !important;
  border-radius: 0;
  font-weight: 500;
  transition: all 0.2s ease;
  border: none;
  margin-bottom: 0;
  margin-left: 15px;
  position: relative;
  border-left: solid;
  border-left-color: rgb(226, 224, 224);
}

 /* .nav-menu a:hover, .nav-menu a.active {
  background-color: transparent;
  color: var(--accent-primary);
  transform: translateX(3px);
  box-shadow: none;
  text-decoration: none !important;
  font-weight: 600;
}


.nav-menu a:before {
  content: '';
  position: absolute;
  left: -10px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--nav-bar-inactive);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
}

.nav-menu a:hover:before, .nav-menu a.active:before {
  background: var(--nav-bar-active);
  width: 4px;
  box-shadow: 0 0 15px rgba(30, 64, 175, 0.5);
}  */

/* Typography */
h1 {
  font-size: 2.0rem;
  color: var(--text-heading);
  margin: 40px 0 20px 0;
  font-weight: 800;
  border-bottom: 4px solid var(--border-light);
  padding-bottom: 12px;
  position: relative;
}


#content h1::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--accent-primary);
  border-radius: 2px;
}

h2 {
  font-size: 1.2rem;
  color: var(--text-heading);
  margin: 35px 0 20px 0;
  font-weight: 700;
  border-bottom: 3px solid var(--border-light);
  padding-bottom: 10px;
  position: relative;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--accent-primary);
  border-radius: 2px;
}

/* Fix heading anchor links to look like headings, not links */
h1 a[name], h2 a[name], h3 a[name] {
  color: inherit !important;
  text-decoration: none !important;
  font-weight: inherit;
}

h1 a[name]:hover, h2 a[name]:hover, h3 a[name]:hover {
  color: inherit !important;
  text-decoration: none !important;
}

h1 a[name]:hover::after, h2 a[name]:hover::after, h3 a[name]:hover::after {
  display: none !important;
}

/* Remove underline from sidebar photo link */
#sidebar #photo a:hover::after {
  display: none !important;
}

h3 {
  font-size: 1.2rem;
  color: var(--text-heading);
  margin: 25px 0 15px 0;
  font-weight: 600;
}

p {
  margin-bottom: 20px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Links */
a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
}

a:hover {
  color: var(--accent-secondary);
  text-decoration: none;
}

a:not(.contact-links a):not(.nav-menu a):hover {
  text-decoration: underline;
}


/* Lists - Publications, Students, etc. */
ul {
  margin-bottom: 25px;
  padding-left: 20px;
}

li {
  margin-bottom: 2px;
  padding-left: 0;
  line-height: 1.6;
}

/* Publication list styling */
.publications li {
  padding: 15px;
  background-color: var(--bg-secondary);
  border-radius: 8px;
  margin-bottom: 15px;
  border-left: 4px solid var(--accent-primary);
  transition: all 0.3s ease;
}

.publications li:hover {
  background-color: #e8f4f8;
  transform: translateX(5px);
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* Student list styling */
.students li {
  display: flex;
  align-items: center;
  padding: 10px;
  background-color: var(--bg-secondary);
  border-radius: 6px;
  margin-bottom: 8px;
}

/* Teaching courses */
.courses li {
  padding: 12px;
  background-color: var(--bg-secondary);
  border-radius: 6px;
  margin-bottom: 10px;
  border-left: 3px solid #27ae60;
}

/* Awards section */
.awards li {
  padding: 10px;
  background-color: #fff8e1;
  border-radius: 6px;
  margin-bottom: 8px;
  border-left: 3px solid #f39c12;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background-color: var(--bg-primary);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px var(--shadow-light);
}

table th {
  background-color: #34495e;
  color: white;
  padding: 15px;
  text-align: left;
  font-weight: 600;
}

table td {
  padding: 12px 15px;
  border-bottom: 1px solid #ecf0f1;
}

table tr:hover {
  background-color: var(--bg-secondary);
}

/* Responsive design - Mobile first adjustments */
@media (max-width: 767px) {
  .header-section {
    flex-direction: column;
    text-align: center;
    gap: 0;
    padding: 19px 15px 19px 15px;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.2);
  }
  
  .profile-photo {
    width: 170px;
    height: 180px;
    order: 1;
    margin-bottom: 0;
  }
  
  .profile-info {
    order: 2;
  }
  
  .profile-info h1 {
    font-size: 1.3rem;
    margin-top: 0;
    margin-bottom: 4px;
  }
  
  .profile-info .title {
    font-size: 0.75rem;
    margin-bottom: 10px;
  }
  
  .contact-links {
    justify-content: center;
    gap: 4px;
  }
  
  .contact-links a {
    padding: 6px 9px;
    font-size: 0.8rem !important;
  }
   .contact-links span {
    padding: 6px 9px;
    font-size: 0.8rem !important;
  }
}

/* Responsive design - Desktop */
@media (min-width: 1024px) {
  #content {
    margin-right: 300px;
  }
  
  #sidebar {
    width: 270px;
    position: sticky;
    top: 20px;
    margin-bottom: 0;
  }
  
  .profile-photo {
    width: 250px;
    height: 250px;
  }
  
  .profile-info h1 {
    font-size: 1.6rem;
  }
}

/* Large desktop */
@media (min-width: 1200px) {
  .profile-info h1 {
    font-size: 2.0rem;
  }
  
  .profile-photo {
    width: 220px;
    height: 240px;
  }
}

/* Print styles */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  a, a:visited {
    text-decoration: underline;
  }
  
  .nav-menu {
    display: none;
  }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Footer styling for all screen sizes */
.credits {
  padding: 0 20px !important;
  text-align: center !important;
  margin: 30px 0 !important;
}


/* Mobile responsive adjustments */
@media (max-width: 767px) {
  #wrap {
    padding: 10px;
  }
  
  #sidebar {
    float: none;
    width: 100%;
    padding-left: 0;
    border-left: none;
    border-top: none;
    padding-top: 0;
    margin-bottom: 0;
  }
  
  #wrap {
    padding: 10px;
  }
  
  #content {
    margin-right: 0;
    font-size: 0.9em;
  }
  
  #sidebar #photo {
    text-align: center;
    margin-bottom: 20px;
  }
  
  #sidebar #photo img,
  .sidebar-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
  }
  
  /* Make navigation horizontal on mobile */
  .nav-menu {
    flex-direction: row !important;
    flex-wrap: wrap;
    gap: 6px !important;
    justify-content: center;
    padding: 8px 5px 15px 5px !important;
    margin-bottom: 0;
    background: transparent !important;
    box-shadow: none !important;
  }
  
  /* Hide Home link on mobile since we're already on the page */
  .nav-menu .home-link {
    display: none !important;
  }
  
  .nav-menu a {
    padding: 8px 12px;
    font-size: 0.7rem;
    margin-bottom: 0;
    flex: 0 1 auto;
    min-width: 0;
    border-radius: 12px !important;
    background-color: var(--nav-bg) !important;
    border: none !important;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-shadow: 0 2px 6px var(--shadow-light) !important;
    color: var(--nav-text) !important;
  }
  
  .nav-menu a:hover {
    background-color: var(--nav-hover-bg) !important;
    color: var(--nav-hover-text) !important;
    border: none !important;
    transform: none !important;
  }
  
  #sidebar ul {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding-left: 0;
  }
  
  #sidebar ul li {
    margin-bottom: 0;
  }
  
  #sidebar ul li a {
    padding: 8px 16px;
    font-size: 0.8rem;
  }
  
  h1 {
    font-size: 1.5rem;
  }
  
  h2 {
    font-size: 1.2rem;
  }
  
  /* Fix footer padding on mobile */
  .credits {
    padding: 0 15px !important;
    text-align: center !important;
  }
}

/* Extra small screens */
@media (max-width: 480px) {
  .nav-menu {
    gap: 4px !important;
    padding: 10px 3px 6px 3px !important;
  }
  
  .nav-menu a {
    padding: 6px 8px !important;
    font-size: 0.65rem !important;
    flex: 1 1 0px;
    min-width: 0;
    text-align: center;
  }
}

li {
  margin-top: 13px;
}